CARRIER Package Units(both Units Combined) Manual L0605441

User Manual: CARRIER CARRIER Package Units(both units combined) Manual CARRIER Package Units(both units combined) Owner's Manual, CARRIER Package Units(both units combined) installation guides

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COBRA TMEnergy Recovery Units

48/50HJ004-014 with 62AQ060-300

Single-Package Rooftop Units

with Energy Recovery Capability

Installation, Start-Up, and Service Supplement

IMPORTANT: This is a supplemental ins'auction for the ]

48/50H1 Start-Up and Service Instructions. It is not I

intended to take the place of the ins'auction or to be a com-

plete piece by itself.

IMPORTANT: Make sure supply voltage matches unit ]

nameplate voltage. I

CONTENTS

Page

SAFETY CONSIDERATIONS .......................... 1

GENERAL ............................................ 1

INSTALLATION .................................... 24.2

Step 1 -- Inspect Shipment .......................... 2

Step 2 -- Provide Unit Support ....................... 2

• COBRA UNIT WITH A FULL-PERIMETER ROOF CURB

• COBRA UNIT WITH A STANDARD ROOF CURB

Step 3 -- Field Fabricate Ductwork ................... 3

Step 4 -- Rig and Place Unit .......................... 6

POSITIONING

Step 5 -- Install Flue Hood (48HJ Rooftop

Sections Only) .................................... H

Step 6 -- Install Gas Piping (48HJ Rooftop

Sections Only) .................................... 11

Step 7 -- Install External Trap for Condensate

Drain .............................................. 11

Step 8 -- Make Electrical Connections .............. 11

• FIELD POWER SUPPLY

FACTORY-SUPPLIED NON-FUSED DISCONNECT

FIELD CONTROL WIRING

THERM1DISTAT TM DEVICE

PREMIERLINK TM CONTROLLER

HEAT ANTICIPATOR SETTINGS

INDOOR AIR QUALITY AND CO2 SENSORS

Step 9 -- Assemble and Mount Supply-Air Hood .... 39

Step t0 -- Mount the Barometric Relief Damper ..... 39

Step 11 -- Set the Outdoor Cooling and

Heating Thermostats .............................. 42

LIGHT COMMERCIAL THERMIDISTAT

ACCESSORY ................................... 424.6

General ............................................. 42

Power ............................................... 42

Dehumidification Equipment and Connections ...... 42

Step 1 -- Select Light Commercial

Thermidistst Location ............................. 42

Step 2 -- Set DIP Switches .......................... 43

Step 3 -- Install Light Commercial Thermidistat

Device ............................................ 43

Step 4 -- Set Light Commercial Thermidistst

Configuration ..................................... 43

Step 5 -- Conduct Light Commercial

Thermidistst Start-Up and Checkout .............. 45

Step 6 -- Make Final Settings ....................... 46

OPERATIONAL INFORMATION ................... 46-69

PRE-START-UP ...................................... 70

START-UP ........................................... 70

SERVICE .......................................... 70,71

TROUBLESHOOTING ............................. 72-88

ROOFTOP UNIT AND ENERGY RECOVERY UNIT

START-UP CHECKLIST .................... CL-1, CL-2

SAFETY CONSIDERATIONS

Installation and servicing of air-condifioulng equipment can

be hazardous due to system pressure and electrical compo-

nents. Only trained and qualified service personnel should

install, repair, or service air-conditioning equipment.

Unlrgmed personnel can perform basic maintenance func-

tions of cleaning coils and filters and replacing filters. All other

operations should be performed by trained service personnel.

When working on aft-conditioning equipment, observe precau-

tions in the litemtore, tags and labels attached to the unit, and

other safety precautions that apply.

Verify that the power source supplied to the unit matches

the voltages and amperages listed on the unit rating plate.

Follow all safety codes. Wear safety glasses and work

gloves. Use quenching cloth for unbrazing operations. Have

fire extinguishers available for all brazing opemtions.

Disconnect gas piping from unit when leak

testing at pressure greater than I/2 psig. Pres-

sures greater than 1/2 psig will cause gas

valve damage resulting in hazardous condi-

tion. If gas valve is subjected to pressure

greater than V2 psig, it must be replaced

before use. When pressure testing field-

supplied gas piping at pressures of U2psig or

less, a unit connected to such piping must be

isolated by manually closing the gas valve.

Before performing service or maintenance operations on

unit, turn off main power switch to unit and install a lock-

out tag. Electrical shock could cause personal injury.

GENERAL

Carrier's COBRA energy recovery units precondition venti-

lation air for the mot_op unit during winter and summer opera-

tion and recover energy from the building exhaust air. These

units are designed to satisfy the higher ventilation requirements

and other building codes while minimizing energy costs.

Factory installation of the 62AQ Energy$Recycler TM sec-

tion provides the benefit of reduced field-installation time,

single point power connections, and the assurance of a factory

test for the complete COBRA energy recovery unit. The

Enetgy$Recycler section requires less maintenance than other

energy recovery systems and can be serviced by any qualified

refrigeration technician.

NOTE: The COBRA unit nameplate has been moved to the

opposite end of the rooftop section, on the upper,

right-hand part of the panel due to the location of the 62AQ

Energy$Recycler section.

Manufacturer reserves the right to discontinue, or change at any am, spedlica_ons or designs wib_out notice and without incurring obligations.

Tab tlllla lb 6a 6b

INSTALLATION

Step I -- Inspect Shipment --File a claLm with the

sl_pping company if shipment is incomplete or damag_L See

Fig. 1 for typical shipping packaging of a COBRA TM energy

recovery unit.

Step 2 -- Provide Unit Support -- The COBRA

energy recovery unit can use afull-perimeter roof curb or a

standard roof curb for the rooftop section of the unit with a sup-

plemental equipment support for the energy recovery section.

COBRA UNIT WITH A FULL-PERIMETER ROOF

CURB If the COBRA unit is installedon the full-perimeter

curb, the supplemental equipment support is not required. Ifa

fuU-penmetgr curb is used, inspect the curb for the following

REQUIRED details:

1. The ductwork must be attached to the curb.

2. The flashing must be sealed to all ensure no water

can leak behind it, particularly around the 62AQ

Energy$Recycler TM section of the curb.

3. The Energy$Recycler section of the full-perimeter curb

must be watertight. See Fig. 2A and 2B.

DO NOT use the COBRA full-perimeter curb drawings to

field fabricate a replacement curb! Significant problems

can occur ifa Carrier approved curb is not used.

COBRA NAMEPLATE

OUTDOOR AIR HOODS

Fig. 1 -- Shipping Packaging (48/50HJ004-006 Shown)

DO NOT USE THIS DRAWING TO FIELD-FABRICATE A CURE! SIGNIF-

ICANT PROBLEMS CAN OCCUR IF A CARRIER APPROVED CURB IS

NOT USED•

DUCT OPENING SIZES

Supply = 13 7/6, x 20 1/4'

R1 = 13 5/8" x 17 3/4'

R2 = 13 5/6, x 12 5/16,

:',:;oSSZ°oI: AC

•Beck pans

7/''

37 3/16" "_

673/8"

92 1/2"

373/16"

2" Return sppport.

Only ussd on Sore6

END VIEW

1'¸ i .......................!................

Fig. 2A -- COBRA Energy Recovery Unit Full-Perimeter Roof Curb -- 48/50HJ004-007 with 62AQ060,100

DO NOT USE THIS DRAWING TO FIELD-FABRICATE A CURB!

SIGNIFICANT PROBLEMS CAN OCCUR IF A CARRIER /J'__

APPROVED CURB IS N_ USED. 4915/16"

IDUC't OPENING SI[ZES L

Supply = 15 11/16' x 31 5/6"

R1 = 15 5/16" x 29 1/16"

R2 = 15 5/16" x 9' 14'

RI =Returnfrom building to HVAC

R2 = Returnfrom buildingto 62AQ

Deck pans

2" Return support.

Only used on some

4915/16'

ENDVIEW

Fig, 2B -- COBRA TM Energy Recovery Unit Full-Perimeter Roof Curb -- 48/50HJ008-014 with 62AQ200,300

DO NOT use the standard COBRA full-perimeter curb in a

sloped application! Contact your Cartier salesperson for a

specific COBRA SLOPED fullspertmetar curb.

COBRA UNIT WITH STANDARD ROOF CURB If a

standard rooftop curb is used (for new or retrofit applications),

it is capable of supporting the rooftop unit section. An

accessory support rail must be used to support the 62AQ

EnergySRecycler TM section. Assemble end install accessory

roof curb in accordance with instmctious shipped with curb.

See Fig. 3A, 3B and 4. Install insulation, cant strips, roofing

felt, and counter flashing as shown.

Ductwork must be attached to curb, not to the unit. The ac-

cessory thru-the-bottom power and gas connection package

must be installed before the unit is set on the roof curb.

If the combined COBRA unit roof curb is not being used,

additional support is required under the EnergySRecycler

section of the unit. An accessory support and pad for the energy

recovery section or a field-fabricated and installed support can

be used. See Fig. 4. Place the protcctive rubber pad on the roof

so that the edge near the unit is located about 6 in. from the end

of the 62AQ EnergySRecycler sectiorl. Measure the distance

from the bottom of 62AQ Energy$Recycler rails to the pad.

Adjust the energy recovery equipment support to match the

measured distance and screw into place with the 4 screws

provided. See Fig. 4. Place the support underneath the

EnergySRecycler unit and on the protective rubber pad. This is

done by lifting the end of the 62AQ EnergySRecyeler section

slightly above level and then sliding the support underneath the

mils.

If electric control power or gas service is to be muted

through the basepan, a fteld-installed accessory thru-the-bottom

connection must be used Attach the accessory to the basepan

per the information m the accessory installation iaslruedons.

Thru-the-bottom connections must be installed before unit is set

on the roof.

iIMPORTANT: The gasketing oftbe unit to the roof curb is i

critical for a watertight seal. Install gasket supplied with the I

roof curb as shown in Fig. 3A and 3B. Improperly applied

gasket can result in air leaks end poor unit performance.

Curb should be level. This is necessary for unit condensate

drain to function properly. Refer to Roof Curb Accessory

Installation Insteactions for additional information as required.

Step 3 -- Field Fabricate Ductwork -- Secure all

ducts to roof curb and building structure. Do not connect duct-

work to unit. Insulate and weatherproof all external ductwork,

joints, and roof openings with cotmter flashing and mastic in

accordance with applicable codes. See Fig. 5A and 513for duct

dimensions.

Ducts passing through an unconditioned space must be

insulated and covered with a vapor barrier. If a plenum return is

used, the return should be ducted through the roof deck to com-

ply with applicable fire codes.

A minimum clearance is not required around ductwork.

These units are designed for a min'unum continuous healing

return-air temperature of 50 F (dry bulb), or an intermittent

operation down to 45 P (dry bulb), such as when used with a

night setback thermostat. To operate at lower r_urn-air temper-

atures, a field-supplied outdoor-air temperature control must be

used to initiate both stages of heat when the temperature is

below 45 K Indoor comfort may be compmmised when these

lower air temperatures are used with instdficient heating

temperature rise.

DALT

CONNECTOR B C DRAIN GAS POWER CONTROL ACCESSORY

PKG. ACCY. HOLE PWR

_/4" [19]

CRSTMPWR001A01 3/4"[19] NPT

NPT 11/4"

CRBTMPWRCO2A01 1' _11/16" 1'-4" 13/4" [31._ 1/2" 1/2"

CRBTMPWROO3A01 [551] [406] [44.5] 1/2" [12.7] 3//, [19] 12,7] NPT [12,7] NPT

NPT NPT

CRBTMPWR 004A01 3/4_ [19] 11/4"

NPT [31,7]

o, 3-

[761

D Ot3_T

J (F IELO 5UPPLI ED)

RIGID INSULATION

(FIELD SUPPLIED)

ROOF CURB [3A615 UNiT SIZE

ACCESSORY

CRRFCURB001A01 I'-Z'

CRRFCURB002A01 [61

NOTES:

1. Roof curb accessory ks shipped disassembled.

2, insulated panels.

3. Dimensions in [ 1are in millimeters.

4. Roof curb: galvanized steel.

5. Attach ductwork to curb (flanges of duct rest on

curb).

6. Ser,Ace clearance: 4 It on each side.

7. _Direction of airflow.

8. Connector packages CRBTMPWR001A01 and

2A01 are for thru-the-curb type gas. Packages

CRBTMPWR003A01 and 4A01 are for thru-the-

bottom type gas conneclions.

TYPICAL (4) SIDE5

o'-?/16"

IF]ELD SUPPLIED)

FELT

(FIELD SUPPLIED)

CANT 5TRIP

RIBID INBULAT]ON

{FIELD SUPPLIED1

0'-0 1/4°[7]

o" 4 9/16

[llS.Bl

i/i 8"

HEAD OF BOLT TO BE ON

INSIDE OF FLANGE

VIEW "B"

:TYp+ ALL CORNERS)

[76]

SEE VIEW

Fig. 3A -- Roof Curb Details (48/50HJ004-007 Section Only)

CAMBR]DGEPORT "SURE-LOCK" CORNER

FASTENING DEVICE IB ACCEPTABLE

ALTERNATE OONSTRgCTION.

D ALT

CONNECTOR BC DRAIN GAS POWER CONTROL

PKG. ACCY. HOLE

3/4" [19]

CRBTMPWROO1A01 3/4" [19] NPT

NPT 1-1/4"

CRBq-MPWR002A01 2' _87/t_, 1' q fll.s/l_ 13/4_ [31.7] I12_

CRBTMF_/R003A01 [827] [583] [44-51 V2" [12.7] 3/4"[19] [12.7] NPT

NPT NPT

314"[19] 11/4"

CRBTMPWR004A01 NPT [31.7_

GASKET

(BUPPLIEO WITH OL_RB)

DUCT

0'-0 7/16"

ACCESSORY

PWR

[12.7] NPT

ROOF CURB [3A6]_ UNIT SIZE

ACCESSORY

CRRFCU RBflfl3A01 1'_"

CRRFCURBOQ4A01 610

NOTES:

I. Roof curb accessory is shipped, disassembled.

2. Insulated panels: 1-m. th=ckpolyurethane loam,

13/4[b density.

3. Dimensions in [ ] are in millimeters.

4. Roof curb: 16-gage steel

5. Attach ductwork to curb (flanges of duct rest on

curb).

6, Service clearance 4 It on each side.

7. _Direction of aidfow.

8. Connector packages CRBTMPWRfl01AOl and

2Afll are for thru-the-curb gas type. Packages

CRBTMPWRO03A01 and 4A01 are for thru-

the-bottom type gas connections.

TYPICAL (4) 51DE5

o" 3[#_.I#]"

IG" _

(F]ELD SUPPLIED)

CANT 5TRIP

"_[g IELD 5k_pL ]ED)

SECTION "C-C"

OPENIN6 FO_ BASEPAN

GAB SERVICE

HEAD OF BOLT TO BE 0N

[NSIDE OF FLANGE

I76) NOTE, CAHBRIDGEPORT *SURE-LOCK" CORNER

ALTERNATE CONSTRUDTION,

Fig. 3B -- Roof Curb Details (48/50HJ008-014 Section Only)

UNIT SiZE

3-6 Ton

71/2-12_/_Ton

EQUIPMENT SUPPORT DIMENSIONS (in.)

PART NUMBER A B C

CRAQSUPTO01A00 36.9 40 8to14

CRAQSUPT002A00 36.9 40 14to24

CRAQSUPT003A00 49.7 54 8to 14

CRAOSUPTO04A00 49.7 54 14 to 24

_SCREW

SUPPORT

IN PEACE

,, ,

EE CHART)

PROTECTIVE

PA0

(EPDM)

ADJUSTABLE

EQUIPMENT

SUPPORT

ENERGY$ REcYCLER_ ROOFTOP UNIT

SECTION SECTION

"'"'! O O

CURB

iiiliiiiiliill!iii!ii!i!liliiill

Fig. 4 -- Supplemental Energy Recovery Section Equipment Support

Step 4 -- Rig and Place Unit -- Keepunit upright

and do not drop. Spreader bars arenot required if top crating is

left on unit. Rollers may be used to move unit across a roof.

Remove the bottom wooden skids that are under the unit by

removing the wooden plates that hold the bottom wooden

flame to the unit. Level by using unit frame as a reference. Lift-

hagholes are provided in base rails as shown in Fig. 6A and 613.

Refer to riggmg instructions on unit.

All panels must be in place when rigging.

POSITIONING Maintain clearance around and above unit

to provide minimum distance fi'om combustible materials,

proper airflow, and service access. A properly positioned unit

will have the following clearances between unit and roof curb:

ll4-in, clearance between roof curb and base mils on each side

and duct end of unit; i/4-in, clearance between roof curb

and condenser coil end of unit for size 004-007 units and a

3s/16-in. clearance between roof curb and condenser coil end of

unit for size 008-014 units.

Do not irtstall unit in an indoor location. Do not locate unit

air inlets near exhaust vents or other sources of contaminated

air.

Be sure that unit is installed such that snow will not block

the combustion intake or flue outlet.

Unit may be installed directly on wood floormg or on

Class A, B, or C roof_overing material when roof curb is used.

Although unit is weatherproof, guard against water from

higher level rtmoffend overhangs.

Flue vent discharge must have a minitman horizontal clear-

ance of 4d from electric and gas meters, gas regulators, and

gas relief equipment.

Minimum distance between unit and other electrically live

parts is 48 inches.

Flue gas can deteriorate building materials. Orient unit

such that flue gas will not affect building materials. Locate

mechanical draft system flue assembly at least 48 in. from an

adjacent building or combustible material.

Adequate combustion-air and ventilation-air space must be

provided for proper operation of this equipment. Be sure that

installation complies with all local codes and Section 5.3, Air

for Comb_fion and Ventilation, NFGC (National Fuel Gas

Code), and ANSI (American National Standards Institute)

Z223.1, and NFPA (National Fire Protection Association)

54 TIA-54-84-1. In Canada, installation must be in accordance

with the CAN1-BI49 installation codes for gas burning

appliances.

After unit is in position, remove rigging skids and shipping

materials.

LEFT

SIDE )P i

35 0 BIA Ci

[I 38]

CO_W[R

[44 T_]

REAR qll 1

14 4o]

187; 9

(137_]

[ZSll]

[27 28]_]

15 58)

COWDENSERCOIt_

810 \

g90 12 Ok)

6603 [3 )0]_

1_6_001 _

1 Ery,,

_ONN[B

([t[CIRICAL ONLTI

[2435)

[3S 3Z)

1405 I

(5532)

145T 3

IS? )8)

14886

[5B 41]

(48_J ONLYI

d8 S

(I 91]

lR_HT

SIDE

uA ) t

-- _ 11745i°76] [645o1 e£r

[5111

i '

-1160

q_ BASEPAW

_T_AWSrO_[R

FRONT 112 0_1

IS )5]

Ho3p

IREOUi_[D Og 460V kPPLICATIOWS 0MLI)

_T6 4

[105 57]

410 0_ 4_

[15 16) 1415_ 06] [37 _)

-- _ISI 80_ -- 6)12 _5)

I) 5 [Z4 835 [I 001

r , . __

'>11

m(18

_03 4IS38} (I14$$1

[IO_ _9] $BPPLY AI_ I_[TU_(MAIR

),o)_ RIGHT SIDE

Fig. 5A -- Base Unit Dimensions -- COBRA TM Energy Recovery Unit -- 48/50HJ004-007 with 62AQ060,100

UNIT

48RJe004 e162AOOGO

48HJ,004 wlGZAOIO0

48HJ,005 IIGZAODGO

48HJtO_5 wf62_OlO0

48HJ1006 v/G?AODGO

48HJSO06 _/G?AOIO0

48HJoOOf w/G_OOGO

4_HJlOOf v/6_kOlO0

S_C4.E ZONE B.EC_ COCLIN6 grc40AE HEAT

[LEC]RICAL

CNARACTfRISTiCS

UNIT WEIGHT CORNER WEIGN1 "A" _ORN[R WEIGH[ "_" COffN[_ W[IGNT "C' )RNER WEIGHT 'D" UNII HEIGHT "G"

LB KG LB EG LB KG L6 EG LB KG IN k_

_061_30-1 riO, _081230 3 60, 460-3-60 890 404 ?36 lOG 28_ I_? _OS 93 IT1 7_ 33 33 846_

2081230 IGO. 206/_30-_ 60, 460 3 GO 905 411 238 108 284 I29 ?08 94 174 79 33.33 846¸5

208/230 I50. 2081230 3 60, 460-3-60 900 _09 _37 107 283 1_8 Z07 94 173 79 33 33 846¸5

208/Z301-6D, ?08/_30 3 GO. 460 3 GO _15 415 Z41 109 288 130 2ql 9_ 176 80 33 33 84_5

208/230 IGO, ?08/230-3-60, 460 3 GO 9ZO 41_ 24? _10 _89 131 ?IZ % IT7 _0 33¸33 _465

?0_1230.1 GO, _08/230 3 60, 460-3-G0 935 _5 Z46 I1_ 294 133 _15 _8 180 _ 33¸33 846¸5

208/230.3-60, 460 3 GO _9_ _5_ _G? 119 3P3 14_ ??_ !04 19_ 81 41¸24 1047¸4

_08/230 3 60, 4_D.3-60 IOrO 4S9 _66 120 _ll 144 _3Z 105 q94 8B _l_a 1047 4

ZONE ELECTKIC

UNI[ ELECTrICAl

CHARAC][91_IlCS

LB KG LB KG LB KG

50HJO04 w162AO060 ZOSI230-t.60, 206/230-3 60, 4GO 3 GO T95 3GI 250 113 IB3 83

50HJO04 w/6_AOlO0 208/230 F 60. 208/230-3-60, 4GO 3 GO 810 368 255 115 18G 85

50HJO05 wlG2AOOGO 2061Z30 [GO, 208/230 3 GO, 4GO-3-GO 805 3G5 253 [15 185 84

50HJO05 w/G2AOIO0 2081230-_.B0, Z0812_O 3 GO, 4GO 3 GO 820 37_ 258 _17 189 86

50HJOOG wl6Z_OOGO _081_30 I60, 2081230 3GO. 460-3-G0 825 3T5 259 !18 190 8G

50HJ006 w/G?AOq00 _0BI230 IGO. 208/230-3 GO, _GO 3 GO 840 38[ ZG4 120 193 B8

50HJO02 wlG2AO060 _081230 3 GO, 4G0.3-60 880 dO0 2TT IZ5 203 92

5DNJO07 w152AO100 Z08/_30 360, 450 3 60 _95 _OI 281 1_8 _G _3

UNIT WEIGh1 CORNER WEIGHT "A" CORN[fl WEIGH[ "_' CO_EE _[IGN1 "C" _ORNER WEIGHT "D" UNIT HEIGHT %"

LB K_ LB K_ IN k_4

209 95 1_3 69 33¸33 _465

213 97 156 71 33_3 845¸5

?17 95 155 70 33 33 845¸5

215 98 158 ;_ 33.33 B4_5

Z17 _8 159 72 33 33 845¸5

221 IO0 IG_ 13 3_33 846¸5

Z3q _05 I69 TT 4P _4 1047¸4

235 107 17Z 78 41¸24 10_74

NOTES;

I DIMENSIONS IN { ]hE[ IN INCHES

3 _ _1RECT_O_ _[ klR [LOW

4 _UCTWORK TO BE ATT_CNED TO ACCESSORY ROOf _URB OgLI

5 HJ MINIMUM CL[_kNCE ILO(_L C0_[$ O_ Jp_I$DrCTION MA_ PREVAILI:

a BETWEEN UNIT, FLUE SI0[ ANO COMBUSTIBLE _URFkC[$, 48 I_CN[$

I0 INCHES WHEN _SIN6 k_C[SSORY TLUE plS_NARG[

O[fL[CTOR

_BOTIOM Of UNI_ 10 COMBUSTIBLE SURFACES (WB[N _07 USING

CURBI lINCH¸

BOTIOM Of BN$[ _klL 10 COMBUS[IBL[ SURFkC[S (gH[N gO7

_SI_G _URB) 0FNCN[_

cCONp[_$[R _OIL, FO_ PROPER kr_ FLOW, 36 INCH_ ON_ S_O[.

q2 INCHES IH[ OTNE_ THE SIDE GETTING THE GREAI[R

CL[kE_C[ IS OpIIONkL

dOV[_N[kD. 60 INCHES 10 kSSUR[ PROP[_ COND[NS_ TAN

OPEraTiON

efi[TW[[N UNIIS, CONTROL BOX SIDe, 42 IN P_R NEC

IBETWEEN UNI1 k_O UNGROUNO[D SU_[NC[$, CON]ROL _OX

SIDE, 36 Ig P[_ N_C

9BETWEEN UNIT k_O BLOCK O_ CONCRETE _ALLS AND OTHER

GROUNDED SURFACES, COglNOt BOX sro[. d_ IN P[_ g[_

h _RrZONTAL SUPPLY AND R_TURN END, 0INC_[_ W_[N 1HE

NL1[_NN[[ COND[NSkTE DRkI_ IS _S[O

A0 . MINI_UM CLEARANCE (LOCAL CODES OR JURISDIC1_Og _At p_[VAILI

o. _1W[[N UNI1 ICONTROLf[XNAU$1 SIp[) A_D UNOGRO_ND[D S_[NC[S,

3G INCH_S AND _LOCK OR CONCRETE _kLLS kgD OTN[_ GRO_#_[D

SURTAXES

b[ILI[R kCCE_S S_D[, 30 JNCHES

SUPPLy AIR INTAKE, 35 INCHES

UNI1 TOP, 0 rNC_ES

EXHAUST klR SI_[ 36 INCHES

6WiTH [_[ [XC[PIION O_ T_[ CL_ARAgC_ FOR THE COND[NS[B COIL

AND COMBUSTION SlOE kS STk][_ [N NO1[ lea. b _D (, k

_[_VkBLE FEgC_ O_ BkRRrCAD[ REOUIR[S gO CLEARANCE

? UNIIS Mk_ 8E INSTALLED ON COMBUSII_L[ _t_RS MkO[ TRO_4

_OOD O_ CLA_S k, ft. OR CROOT COVERING MMERI_L I[ _[T

O_ B_S[ _klL

8 IHE VE_I_CkL CENTER OF G_kVITY I_ 1'-6" [457 ] UP TROM

lEE _O]10M O[ IH[ BASE RklL

BOIWOM POWER CHART

THESE HOLES REQUIRED FOR USE

WITH ACCESSORY PACKAGES

CRBTMPWR001A01, 3A0112.7 [0.50], 19.0 [0.75]

CRBTMPWR002A01, 4A01 12.7 [0,50], 31.8 [1.25]

THREADED REQUIRED HOLE

CONDUIT WIRE SIZE SIZES (MAX,)

SIZE

12.7 [0.50] ACCESSORY 22,2 [0.88]

12.7 [0.50 24V 22.2 [0.88]

31,71.25 44.428"4[1"1219.00.75 POWER" [1,75

POWER"

(003) 12,7 [0,50] FPT GAS 3 .8 .25

1004) 1g.o l0"751 FPT GAS 41.3 [1.62 l

*SELECT EITHER 19.0 [0.75] OR 31,8 [1.25] FOR POWER, DEPENDING ON

WIRE SIZE.

_OOF CprB [NO OR SLE[P[R RAIL_

AO B_SEPkN _UPpORT j

1813.9

[71 421

S[CHONA-A

_121.8

(4 80]

_GGTG [2628]

IVIEW FOR COR_ISLE[?[R RAILI

Fig. 5A -- Base Unit Dimensions -- COBRA TM Energy Recovery Unit -- 48/50HJ004-007 with 62AQ060,100 (cont)

_39 3

1_.551

--228 6

19.00]

LEFT

I _32 _

REAR

Fig. 5B -- Base Unit Dimensions -- COBRA TM Energy Recovery Unit _48/50HJ008-O14 with 62AQ200,300

5_NOLIE _E_J_CI_P,IC COOLING WITH GAS IE.AT

U_IT [t[CT_ICAL _11 W[IGHT CO_NER _EIGHT _k" (OR_[R WEIGHT -_= CORH[R _EIGHT ,_- COR_ER W[_G_I "D" _IT _(_G_T .5 ¸¸

C_ARA_TERISTI_S

L_ _G L_ KG L_ L_ KG LB _G IN MM

Z081_O 3_0 460 3 _0 1445 _T 300 1t6 13_ I_t 4_ 19_ _7_ 17_ 56 12 1_71

SK]d.E ZONE ELECTRIC COCLJM_

Ug_T _E_GHT CO_H£R _[IGHI _" CO_E_ _[IGHT "C" COffN[R W[I_HT =_" UNIT H[I_HT -_-

L_ i_

2_? T

_56 ili

_75 12s

_B_ ] 129

_ONJDO_ */_2A0200

[CT_kL

,(T[RIS_ICS

_0_/73_ 3 6O. 4_0 3 $0 1740

_¢8/_3_ 3_0, aso _6O 12_ 584

aOT[_:

I_IH[H_IOHS IN [ _ _R[ r# I_CH[S

2_ _ CEN T[_ O_ _R_WT_

5 HJ MrNfHI]H _L(_kHC[ [L_kL ¢OD(_ OR JB_ISpI_TIOH M_ PR[_IL_

a B[T_[[N UNFT FLU[ SI_f kHO (OMB_S11BL[ _RFk_[_ 4_ I_HfS

I_ INCH(S _[H U$IN_ ACCESTORY FL_[ blSCHkR6[

bBOTTOM OF _H TO [OMBBSTIB[( $_r_C[$ ew_[H HOT USlHG

90TTOH Or BASE RAIL 10 COH_U$1_BL[ _B_[kC[_ _H(H NOI

II IHCH($ TH£ OTH[R IHE S_[ G(TIIN6 TH[ 6R[AT(R

(LEAR_NC[ _ OPTIORkL

OPERAIroN

ALT[_HAI[ _OH_[_Skl[ _RAIH II USEB

kO MI_]M_M CLEXR_C[ ILO_XL COPES OR JUelS_I_TIOH M_ p_E_IL_:

SpRFA_IS

bFILTER ACCESS SI_Er 30 INCHES

SUppLy AfR INTAKE. 36 IHCH[S

UHH lOP _ ]H_H[_

6 _ITH TH[ [X_EPTIO_ OF TH_ _L[kRAHC[ FOR IH[ _ONO[HSER COIL

OH BkS[ BA_L

B THE V[nlICkL C[NT[R OF _RAVITX _S _ _ i4S?] _P FROM

IH[ BOTIOMOF TH[ Ok$[ RAIL

CO_HEH W[IG_T "B"

L_ [ IIG_I L_ L_ KG iN MM

]_ 13_ _BZ 17_ 339 154 _12 _OTO

_d 14_ 40_ 1_4 _50 15t 50 4Z IZT_

BOTTOM POWER CHART

3_]ESE HOLES REQUIRED FOR USE

WITH ACCESSORY PAOKAG ES

CRBTMPWRO01A01, 3AOl 12.7 [0.501, 19.0 [0.75]

CRBTMPWRO02A01.4AO1 12.7 [0.50I, 31.8 [1.25]

THREADED REQUIRED HOLE

CONDUIT WIRE SIZE

SIZE SIZES (MAX.)

12.7 [0.50 ACCESSORY 22.2 0.88

12.710.50 t 24V 22,2f0.88 t

19.0 0.75 POWER* 28,4 1.12

31A1 o] POWER"I ,,,11751

003 12.7 0.50]FPT GAS 3t.811251

oo,oofo,sF,TI 1'3 °2

'S ELECT EITHER 1g,010.751 OR 31.8 [1.251 FOR POWER,

DEPENDING ON WIRE SIZE.

?l_T 0/

(85Jtl

s_c,_N A-A

SCkL[ 3:_

rVI[W fO_ CU_B/_L[[PER R_IL_

1_ 001

[4 80]

_808 $

131 84]

Fig. 5B -- Base Unit Dimensions -- COBRA _Energy Recovery Unit -- 48/50HJ008-014 with 62AQ200,300 (cont)

11 55]

/t CAUTION NOTnCETO RDGGER$:

ALL PANELMUSTBE IN PLACEWHIENRBOI_

HOOK RiGGiNG SHACKLES THROUGHHOLES IN BASE RAIL. AS SHOWN iN DETAIL "k"

HOLES IN BASE RAILS ARE CENTERED AROUND THE UNIT CENTER OF GRAVITTr

USE IK)ODER TOP SKID. WHEN RIGGING. TO PREVENT RIGGING STRAP._ FROH OAMAGING UNIT.

1914- _37 Imm)

DUCT

DETAIL A

i)[]AIL k

MAX WEIGHT A B C

Ib kg in. mm in. mm in. mm

4BHJO04 wi62AQ060 890 404 95.6 2428.20 57.38 1457.30 33.35 847

48HJ004 wi62AQ1 CO 905 411 95.6 2428.20 57.38 1457.30 33.35 847

48HJ005 w/62AO060 900 409 95.6 2428,20 57.38 1457.30 33.35 847

48HJOCO wi62AQ1 CO 915 415 95.6 2428.20 57.38 1457.30 33.35 847

48H JOCOwRI2AQ060 920 418 95.6 2428.20 57.38 1457.30 33.35 847

48HJ006 wI62AQlO0 935 425 95.6 2428.20 57.38 1457.30 33.35 847

48HJ007 wi62AQ060 995 452 95.6 2428.20 57.38 1457.30 42.12 1070

48HJCO7 w/62AQlO0 1010 459 95.6 2428.20 57.38 1457.30 42.12 1070

50H3004 wi62AQ060 795 361 95,6 2428.20 57.38 1457.30 33.35 847

50HJO04 w/62AQ1 CO 810 368 95.6 2428.20 57.38 1457.30 33.35 847

50HJOCO w/62AQCO0 805 365 95.6 2428.20 57.38 1457.30 33.35 847

COHJCO5W/62A01 CO 820 372 95.6 2428.20 57.38 1457.30 33.35 847

50HJO06 W/62AO060 825 375 95.6 2428.20 57.38 1457.30 33.35 847

50HJO06 wi62AQlO0 840 381 95.6 2428.20 57.38 1457.30 33.35 847

50HJCO7 wi62AO060 880 400 95.6 2428.20 57.38 1457.30 42.12 1070

50H JO07 wi62AQ1 CO 895 407 95.6 2428.20 57.38 1457.30 42.12 1070

Fig. 6A -- Rigging Label -- COBRATM Energy Recovery Unit -- Sizes 48/50HJ004-007

Step 5 -- Install Flue Hood (48HJ Rooftop Sec-

tions Only) -- Refer to the 48HJ installationinslmctioas for

information on installing the flue hood.

Step 6 -- Install Gas Piping (48HJ Rooftop Sec-

tions Only) -- The gas supply for gas heat units (48HJ) can

be ran through the curb or through the bottom of the unit. See

Fig. 7 and 8.

When installing the gas supply through the curb, the gas

piping will exit out through the side of the roof curb and a

hole in the base rail. The accessory thru-the-curb service

connections (part numbers CRBTMPWR001A01 and

CRBTMPWR002A01) are required. See Fig. 9. A field-

supplied regulator is installed outside the unit and the piping is

connected to the unit gas valve.

When installing gas supply through the bottom of the

unit, the gas piping is routed through a knockout in the unit

basepan and then connected to the unit gas valve. The

accessory thin-the-bottom service connections (part numbers

CRBTMPWR003A01 and CRBTMPWR004A01) are re-

quire& See Fig. 10 and 11. Refer to the 48HJ installation

instructions for more information on installing the gas piping.

Step 7 -- Install External Trap For Condensate

Drain -- The condensate from the rooftop unit along with

condensate from the upper coil of the 62AQ Energy$Recycler TM

section is internally piped to the condensate pan in the lower

section of the 62AQ Energy$Recyeler section. See Fig. 12. For

this reason, the bottom drain on the rooftop unit CANNOT be

used for a condensate drain.The 3/_-in.drain connection on the

energy recovery section is located near the bottom left of the

exhaust air section. See Fig. 5A and 513.The Energy$Recycler

section must have a field-fabricated, external, P-Irap installed for

condensate drainage. Trap must be at least 4 in. deep to protect

against freeze-up. If the drain line is installed downstream liom

the external trap, pitch the line away fi'om the unit at 1 in. per

10-fl of rim. Do not use a pipe smaller than the connection

Step 8 -- Make Electrical Connections

Unit cabinet must have an uninterrupted, unbroken electri-

cal ground to minimize the possthility of personal injury if

an elcclrical fault should occur. This ground may consist of

electrical wire connected to unit ground lug in control com-

partment, or conduit approved for electrical ground when

installed in accordance with NEC (National Electrical

Code), ANSI/NFPA, latest edition, and local electrical

codes. Do not use gas piping as an electrical ground Fail-

ure to follow this warning could result m the installer being

liable for personal injury of others.

FIELD POWER SUPPLY -- All units except 208/230-v

units are factory-wired for the voltage shown on the nameplate.

/!k,CAUTION- NOTICETO RIGGERS:

N.L P_EL MUST EE IN PLN:E _EM RIOOIN6

HOOK RIGGIMG SHACKLES THROUGH HOLES IN BASE RAIL, AS SHOWN IN DETAIL "A"

HOLES iN BASE RAILS ARE CENTERED AROUND THE UNiT CENTER OF GRAVITY.

US[ IIOOD[N TOP SKID. WHEN RIGGING, TO PREVENT RIGGING STRAPS FROM DAMAGING UNIT.

DETAIL A

MAX WEIGHT A B C

Ib kg in. mm in. mm in. mm

48HJ008 w/62AQ200 1310 595 77,42 1966.5 66.50 1689.10 42.12 1070

48HJOOB wi62AQ300 1355 616 77.42 1966,6 66,50 1689.10 42.12 1076

48HJ009 wi62AQ200 1400 636 77.42 1966.5 66.50 1689.10 42.12 1070

48H J009 wi62AQ300 1445 657 77,42 1966.5 66,50 1689.10 42,12 1070

48HJ012 wi62AQ200 1400 636 77.42 1966.5 66.50 1689.10 60.12 1273

48HJOl 2 wi62AQ300 1445 657 77.42 1966.5 66.50 1689.10 50.12 1273

¢HHJOl 4 wi62AQ200 1440 655 77.42 1966.5 66,60 1589.10 50.12 1273

48HJ014 w/62AQ3OO 1485 675 77.42 1966.5 66.60 1689.10 60.12 1273

50HJ608 w/62AQ200 1240 564 77,42 1966.5 66.50 1689.10 42.12 1070

50HJD08 w/62AQ300 1285 584 77.42 1966.5 66.50 1689.10 42.12 1070

50HJ009 wi62AQ200 1325 602 77.42 1966.5 66.50 1689.10 50.12 1273

5OHJO09 wi62AQ300 1370 623 77.42 1966.5 66.50 1689.10 50.12 1273

50HJ012 wi62AQ200 1326 602 77,42 1966.5 66,50 1689.10 50.12 1273

50H J012 wi62AQ300 1370 623 77.42 1966.5 66,56 1689.16 50,12 1273

50HJ014 w/62AQ200 1365 620 77,42 1966.5 66.50 1689.10 50,12 1273

50HJ014 wi62AQ300 1410 641 77.42 1966.5 66.50 1689,10 50.12 1273

Fig. 6B -- Rigging Label -- COBRA TM Energy Recovery Unit -- Sizes 48/50HJ008-014

GAS VALVE

CONNECTION

GAS

(FIELD

SUPPUED)

SHUTOFF

(FIELD

SUPPLIED)

PiPiNG

GAS VALVE

CONNECTION

GAS

FIELD

_UPPLIED)

MANUAL

SHUTOFF

(FIELD

SUPPUED)

GAS

PIPING

Fig. 7 -- Thru-the-Curb Gas Connections Fig, 8 --Thru-the-Bottom Gas Connections

GAS

SERVICE

PLATE

Fig. 9 -- Thru-the-Curb

Gas Connection (Accessory)

SUPPORT

EMBOSSMENT BRASS FITTING BRACKET

Fig, 10 -- Internal Gas Line Piping with Thru-the-

Bottom Connection (3 to 6 Ton Shown)

LOUVERED,N,

PANEL bMUI UPP

Fig, 11 -- External Gas Piping with Thru-the-

Bottom Connection (3 to 6 Ton Models Shown)

lf the 208/230-v unit is to be connected to a 208-v power

supply, the transfon'ner must be rewired by moving the black

wire with the t/4-in, female space connector from the 230-volt

connection and moving to the 200-volt I/4-in. male terminal on

the primary side of the transformer:

Refer to unit label diagram for additional information. Pig-

tails are provided for field wire connections. Use factory-

supplied splices or UL (Underwriters Laboratories) approved

copper/aluminum connector.

When installing units, provide a disconnect per the NEC.

All field wiring must comply with NEC and local

requirements.

Install field wiring as follows:

1. Install conduit through side panel openings. Install con-

duit between disconnect and control box.

2. Install power lines to terminal connections as shown in

Fig. 13-15.

Voltage to compressor terminals during operation must be

within voltage range indicated on unit nameplate (see

Tables IA-1H). On 3-phase units, voltages between phases must

be balanced within 2% and the current within 10%. Use the for-

mula shown in the legend for Tables 1A-1H, Note 2 to deter-

mine the percent of voltage imbalance. Operation on improper

line voltage or excessive phase imbalance constitutes abuse and

may cause damage to electrical components. Such operation

would invalidate any applicable Cartier warranty.

FACTORY-SUPPLIED NON-FUSED DISCONNECT The

factory-supplied disconnect is capable of handling disconnect

amps up to 80 A for a COBRA energy recovery unit. For discon-

nect amps greater than 80 A, a field-supplied disconnect is

required.

FIELD-CONTROLWlRING There are three required

inputs to properly control COBRA TM units: temperature,

humidity and an occupied/unoccupied schedule. The four rec-

ommended control combinations are:

• ThermidistatrM and electro_mechanical controls (Fig. 16)

• digital thermostat, humidistat and electro-mechanical con-

trois (Fig. 17)

• humidistat, space temperature sensor and PremierLink TM

controls (Fig. 18)

•Thermidistat and PremierLink controls (Fig. 19)

The most widely used combinations are the light commercial

Thermidistat or PremierLink with thermostat and humidistat.

If the unit is equipped with the Humidi-MiZer TM or

MoistureMi$er TM option, these systems also require a humidity

input. The Energy$Recycler wiring accepts the sensed space

humidity input and sends the appropriate signal to the rooftop

unit. See Fig. 14-17.

NOTE: The humidity sensor device used with a COBRA or

field-installed 62AQ unit with or without a Humidi-MiZer or

MoistureMi$er dehumidification option must be a contact

closure type device such as a humidistat or a light commercial

Thermidistat device.

NOTE: For wire runs up to 50 It, use No. 18 AWG (American

Wire Gage) insulated wire (35 C minimum). For wire runs of

50 to 75 ft, use No. 16 AWG insulated wire (35 C minimum).

For runs that require more than 75 1l,use No. 14 AWG insulat-

ed wire (35 C minimum). All wire larger than No. 18 AWG

cannot be directly connected to the thermostat and will require

a junction box and splice at the thermostat.

THERM1DISTAT DEVICE- The light commercial Ther-

midistat device is a 7-day programmable, wall-mounted, low

voltage field-installed control. It combines temperature and

humidity control in a single unit and provides separate set

points for heating and cooling. The control adds a dehumidifi-

cation control function with separate set points for up to 2

occupied and unoccupied periods per day.

Ifa Thermidistat device is used, install the Therraidistat as-

sembly accessory according to installation instructions includ-

ed with the accessory. Place the Thermidistat assembly on a

solid wall in the conditioned space to sense average tempera-

ture in accordance with Thermidistat installation instruction on

page 43. Connect Thermidistat wires to terminal board. Route

Thermidistat cable or equivalent single leads of colored wire

fi'om subbase terminals through connector on unit to low-

voltage connections (shown in Fig. 16). Thermidistat control

wiring is routed to both the rooftop unit control box and the

62AQ Energy$Reeycler control box.

PREM1ERLINK TM CONTROLLER -- The PremierLink digi-

hal controller is a Direct Digital Control (DDC) box that mounts

in the motIop unit under the main unit control box. It is

designed to be connected to the Carrier Comfort Network®

(CCN) system, where all the input and output points and con-

trol screens can be monitored for servicing and troubleshooting

purposes. However, the PremierLink controller can also be

connected and operated via thermostat. For details and addi-

tional information, refer to the Retrofit PremierLink Installation

Instructions and Application Data.

The PremierLink controller is available factory-installed or

as a field retrofit accessory. The PremierLink controller is

designed to allow users the access and ability to change factory

defined settings, thus expanding the function of the standard

rooftop unit control. However, the PremierLink controller does

not have an incorporated visual interface. It requires a

CCN accessory such as a Navigator TM device, System PilotTM

unit or personal computer equipped with Carrier's proprietary

ComfortWORKS® or ServiceTool software.

If a PremierLink controller is used, a Thermidistat device

does not have to be used; a harnidistat and separate room air

sensor can also be used. Two extra terminal blocks (TB2 and

TB3) are provided in the control box for all units with Premier-

Link controls. No wires should be directly connected to the

PremierLink control. Wire sensors to "1332or TB3. Humidistat

is wired to TB 1 and the Energy$Recycler section. See Fig. 17.

Pass the control wires through the hole provided in the comer

post; then feed wires through the raceway build into the comer

post to the 24-v barrier located on.the left side of the control box.

See Fig. 20A and 20B. The raceway provides the UL required

clearance between high voltage and low voltage wiring.

The PremierLink controller does not support humidity con-

trol. A separate field-supplied humidity device that supports con-

tact closure must be used. However, remote humidity sensing

and control on a CCN system is possible using a PremierLink

controller, a 3V rM universal controller and a 3V compatible

humidity sensor. In this configuration, the universal controller

provides 24 vdc power to the humidity sensor and accepts a 4 to

CONDENSATE DRAIN CONDENSATE DRAIN FROM

FROM ROOFTOP ENERGY RECOVERY SUPPLY

SECTION COIL

20 mA humidity signal from the humidity sensor. The universal

controller provides an output relay contact that is connected to

the HM terminal in the Energy$Recycler section's cuntml box.

The humidity sensor output does not connect directly to the

COBRA unit. The universal controller is used to configure the

humidity sensor's set point; when the sensed humidity level is

reached, the controller sends a signal to the HM terminal.

The universal controller is also connected to the CCN bus

wiring, therefore the humidity set point and sensed humidity

value is displayed on the network. One universal controller can

be used for up to eight (8) different COBRA units.

The PremierLink controller has two modes of sensor input:

Temperature mode or Sensor mode. In Temperature mode, the

PremierLink controller accepts input from a Carrier approved

space thermostat. Input connections for this mode use terminal

strip TB3 as shown in Fig. 21-23. Terminal strip TB3 connects

to the J4 contacts on the PremierLink module. When the

PremierLink controller is factory-installed, it is completely

wired, except for the field-installed sensors. Currently, the only

sensor that is included from the factory is the supply air tem-

perature sensor. The following field-installed sensors are

required for PremierLink controller operation:

• space temperature sensor in sensor mode a space tem-

perature sensor (SPT) is required, or for thermostat mode

a thermostat is required, for all applications.

• outdoor-air temperature sensor (OAT) -- required for all

applications.

• supply-air temperature sensor (SAT) required for all

applications (included when PremierLink controller is

factory-installed).

• indoor-air quality sensor (IAQ) required for demand

control ventilation.

• outdoor-air quality sensor (OAQ) -- required for

demand control ventilation.

HEAT ANTICIPATOR SETTINGS -- Set heat anticipator

settings at 0.14 amp for the first stage and 0.14 amp for second-

stage heating, when available.

ENERGY RECOVERY EXHAUST

COIL

62A0 ENERGY$RECYCLER

SECTION DRAIN PAN

NOTE: Ensure condensate pan from rooftop

section is properly sloped in order for water to

flow to the 62AQ Energy$Recycler TM section

drain pan.

Fig. 12- Condensate Drain Location

DRAIN

OUTLET

FROM UNIT

_,,L---e, 1

FIELD PO=WI_RSUPPLY

I l_R IEC

208/230-1-60

<_]--YEL--'_:_°LU--

TO C0Mp

FIELD POWER SUPPLY

.'-oTs_o'_-1

L,'_.N_C._,

208/230-3-60

460-3-60

(SIZE 48/50HJ007 ONLY)

l® I

Z_C_BLU _ TO

TB2

[

FIELD POWER SUPPLY

J-I--L

rDISCONNECT _

L ._ER_EO

575-3-60

(SIZE 48/50HJ007 ONLY) 206/230-3-60

575-3-60, 460-3-60

(SIZES 48/50HJ004-006)

LK-

YEL_

® ®

__52

RELD POWERSUppLy

I__L_.L_

r'-- DISCONNECT '--_

IPERNEO I

L I

TOCC_APS _BLK_ t_

®®j ® @I

208/230-3-60 AND 460-3-60

(SIZES 48/50HJ008-014)

--mud_

FIELDPOWERSUpPLy

J-- _._-L__

r I DISCONNECT ]

I pERNEC I

575-3-60

(SIZES 48/50HJ006-014)

TO COMps

__]

,=]

LEGEND

C-- Contactor

COMP -- Compressor

IFC -- Indoor-Fan Contactor

NEC -- National Electrical Code

TB -- Terminal Block

Fig. 13 -- Power Wiring Connections

PREMIERLINK TM TERMINAL

BLOCK

OPTIONAL FACTORY - INSTALLED

DISCONNECT

POWER WIRING

Fig. 14 -- Field Wiring Connections (Terminal Blocks in Rooftop Unit Section)

TERMINAL _/

BLOCK

Fig. 15 -- Field Wiring Connections

(Terminal Block in Energy Recovery Section)

BASE UNIT

CONNECTION

BOARD

"\\ ROOFTOP SECTION

CONTROL BOX --ENERGY$RECYCLER TM

CONTROL

BOX

CONNECTION

BOARD

/°

rSIAl

UNIT

................................. 1

LIGHT COMMERCIAL THERMIDISTAT DEVICE

THERMOSTATI

CONNECTIONI

BOARD I

Fig. 16 -- Control Wiring with Thermidistat TM Device and Electro-Mechanical Controls

I I

.f..L J.

I i

I I

I i

I I

I i I

III

I i I

i I

-r

-i ¸

OPEN HOLE.

FOR WIRES

BASE UNIT

CONNECTION

BOARD

IN'

I I

-I T -i

I t

I I

I l

I I

I l

I I t

I I _OPN2

-- Y1_2

.-T--I- _R _

-T-- iY_2 - C

DO NOT

USE

ROOFTOP SECTION

CONTROL BOX

ENERGYSREGYCLER'_

CONTROL

BOX

CONNECTION

BOARD

---- --i I

• STAT

UN_

r.......................

i I i

_ GRA

RED

RUMIDISTAT

MOUNTING HOLES

Fig. 17 -- Control Wiring with Digital Thermostat, Humidistat and Electro-Mechanical Controls

TB2 ITB1

I BLU =-L__1

_........g_2---_

ROOFTOP SECTION

CONTROL BOX

ROOFTOP UNIT

SECTION

ENERGY_ECYC_R TM

CONTROL

BOX

i°

r _TA]

UNIT

HUMIDISTAT

f',

S_N SET

BLK

(T56)

/J9

SPACE TEMPERATURE SENSOR

(33ZCT56SPT)

CCN COM

SENSOR WIRING t -

JUMPER

_TERMINALS

AS SHOWN

Fig. 18 -- Control Wiring with Humidistat, Space Temperature Sensor, and PremierLink TM Controls

TBI

ROOFTOP SECTION

CONTROL BOX m

ENERGY$REGYCLERTM

CONTROL

BOX

.... I

LIGHT COMMERICAL THERMIDISTAT DEVICE

THERMOSTAT I

CONNECTION I

"_ BOARD* I

@---- I

@ .... I

NOTE:Thermidistatconnectionterminalarrangementfor schematicpurposesonly.

Fig. 19 -- Control Wiring with Thermidistat TM and PremierLink TM Controls

RACEWAY LOW VOLTAGE INTEGRATED GAS UNIT

CONNECTIONS CONTROLLER (IGC)

FIELD-SUPPLIED

DISCONNECT

CONTROL

(OPTIONAL)

INTERNAL

DISCONNECT

(80 AMP MAX)

CONDU

WATERTIGHT

CONNECTIONS

(FIELD-SUPPLIED)

_POWER WIRING

Fig. 20A -- Power Wiring Routing with Thru-the-Bottom Accessory (Gas Unit Shown)

RACEWAY LOW VOLTAGE INTEGRATED GAS UNIT

CONTROLLER (IGC)

FIELD-SUPPLIED

DISCONNECT

CONTROL

(OPTIONAL)

OPTIONAL IINTERNAL

DISCONNECT

(80 AMP MAX)

ROOF

ROOF CURB

W,°,RG

Fig. 2OB -- Power Wiring Routing from Outside of Unit (Gas Unit Shown)

TS_T

J2 ,r/ J8

oI'":;" :1":,'1

NOTE:Removeall unusedred wiresfrom J4 connectorto prevent24vac shortingothercomponentsor ground.Inputs onJ4 are 24 vac; red leadsare voltage source.

Fig. 21 -- PremierLink TM Controller Sensor Wiring --

With Programmable or Non-Programmable Thermostat

i lU i

PremierLink _'

i uu ii i

_ 'j 0

NOTE: RemoveredwirefromJ4-9 to prevent24 vac shorting outothercomponentsor ground.

Fig. 22 -- PremierUnk TM Field-Installed Controller Sensor Mode Contacts

TERMINAL /

BLOCK

Fig. 23 -- Field Wiring Connections

(Terminal Block in Energy Recovery Section)

Table 1A -- Electrical Data (COBRA TM Energy Recovery 48HJ004-007 Units with 62AQ060)

UNIT

SIZE

48HJ004

48HJ005

48HJ006

48HJ007

NOMINAL

V-PH-Hz

206/230-1-60

208/230-3-60

460-3-60

208/230-1-60

208/230-3-60

460-3-60

208/230-1-60

206/230-3-60

460-3-60

208/230-3-60

460-3-60

IFM

TYPE

STD

HIGH

STD

HIGH

STD

HIGH

STD

HiGH

STD

HIGH

STD

HIGH

STD

HIGH

STD

HIGH

CONV 62AQ

OUTLET FLA

NO 9.2

YES 9.2

NO 9.2

YES 9,2

NO 9,2

YES 9,2

NO 9.2

YES 9.2

NO 9.2

YES 9.2

NO 9.2

YES 9.2

NO 9,2

YES 9.2

NO 9,2

YES 9,2

NO 9.2

YES 9.2

NO 9.2

YES 9.2

NO 9.2

YES 9.2

NO 9.2

YES 9.2

NO 9.2

YES 9,2

NO 9,2

YES 9.2

NO 9.2

YES 9,2

NO 9.2

YES 9,2

NO 9.2

YES 9.2

NO 9.2

YES 9,2

NO 9.2

YES 9.2

POWER SUPPLY*

MCA MOCPt

34,8/34.8 40/40

40,6/40.8 45/45

27,7/27.7 35/35

33,7/33,7 40/40

28,6/28.6 35/35

34.6/34.6 40/40

13.6 15

16.3 2O

14,0 20

16,7 20

44.4/44.4 60/60

50,4/50.4 60/60

31.7/31.7 40/40

37,7/37.7 40/40

32.6/32.6 45/40

38.6/38.6 45/45

15,2 20

17,9 20

15.6 20

16.3 20

53.3/53,3 70/70

59.3/59.3 70/70

38.1/38.1 45/45

44.1/44.1 50/50

39.5/39.8 45/45

45.6/45.8 50/50

19.3 25

22.0 25

20.1 25

22.9 25

42.0/42,0 50/50

48,0/48,0 60/60

43.7/43,7 50/50

49.7/49,7 60/60

19.8 25

22.5 25

20.6 25

23.3 30

DISCONNECT SIZE

FLA LRA

35/35 135/135

41/41 140/140

29/29 124/124

34/34 129/129

30/30 154/154

35/35 158/158

14 63

17 65

15 77

17 80

44/44 173/173

50/50 175/178

33/33 140/140

35/38 145/145

34/34 170/170

39/39 174/174

16 71

10 73

16 85

19 87

53/53 240/240

59/59 244/244

39/39 202/202

44/44 207/207

41/41 221/221

46/46 226/226

20 101

22 104

20 111

23 113

42/42 234/234

46/48 239/239

44/44 255/253

50/50 256/258

20 114

23 116

21 124

23 126

LEGEND

FLA -- Full Load Amps

HACR -- Heating, Air Conditioning and Refrigeration

IFM -- indoor (Evaporator) Fan Motor

LRA -- Locked Rotor Amps

MCA -- Minimum CircuitAmps

MOGP-- Maximum Overcurrent Protection

NEC -- National Electrical Code

UL -- Underwriters Laboratories

*The values listed in this table do not include power exhaust. See

Power Exhaust table for requirements.

tFuse or HACR breaker.

NOTES:

1. In compliance with NEC requirements for multimctorand combi-

nation load equipment (refer to NEC Articles 430 and 440), the

overcurrent protective device for the unit shall be fuse or HACR

breaker. UL, Canada units may be fuse or circuitbreaker.

2. Unbalanced 3-Phase Supply Voltage

Never operate a motor where a phase imbalance in supply volt-

age is greater than 2%. Use the following formula to determine

the percent of voltage imbalance.

=100x max voltage deviation from average voltage

average voltage

0( us

Example: Supply voltage is 460-3-60.

As c AB- 452 v

BC--464 v

AC = 455 v

Average Voltage = 452 + 464 + 455

1371

- 457

Determine maximum deviationfrom average voltage.

(AB) 457 - 452 =5 v

BC 464-457_7v

IACI 457-455 = 2 v

Maximum deviation is 7 v.

Determine percent of voltage imbalance.

% Voltage imbalance _100 x 45_

= 1,53%

ThiSmaximumamOUntallowa_leOfhase2%.imbalance is satisfactory as it is below the

l IMPORTANT: If the supply voltage phase imbalance is more than

2%, contact your local e_ectricuhl_ company immediately. I

UNIT

SIZE

50H J004

50H3005

Table 1B -- Electrical Data (COBRA TM Energy Recovery 50HJ004-007 Units with 62AQ060)

ELECTRIC HEAT POWER SUPPLY*

NOMINAL IFM CONV 62AQ HEATER MODEL NO.

V-PH-Hz TYPE OUTLET FLA CRHEATER--AOO Actual

kWt FLA MCA MOCP*'

1/-- --/--

001 3.3/ 4.0 15.9/18.3

002 4.9/ 5.8 23.5/27.1

NO 9.2 003 6.5/ 8.0 31.4/36.3

004 7,9/ 9,6 37.9/43,1

902+002 9,8/1 t,6 46.9/54.2

203/230-1-60 STD

001 3.3/ 4.0 15.9/18.3

YES 9.2 002 4.9/ 5.8 23.5/27.1

003 65/ 80 31.4/38.3

004 7.9/ 9.6 37,9/43.1

002+009 9.8/11.6 46.9/54.2

001 3.3/ 4.0 15.6/18.3

002 4.9/ 5.8 23.5/27.1

NO 9.2 003 6 5/ 8,0 31 4/36,3

004 7 9/ 96 37.9/43 1

005 12.0/14.7 33.4/38.5

STD --/-- --/--

001 3.3/ 4.0 15.9/18.3

002 49/ 5.8 23.5/271

YES 9.2 003 6.5/ 8.0 31.4/36.3

004 •.9/ 9.6 37.3/43.1

005 12.0114.7 33.4/38.5

208/230-3-60 __ __/__ __/__

001 3.3/ 4.0 15.9/18.3

NO 9.2 002 4.9/ 5.8 23.5/97.1

003 65/ 8,0 314/363

004 79/ 96 379/431

005 12.0/14.7 334/385

HIGH

001 3.3/ 4.0 15.9/18.3

YES 9.2 002 4.9/ 5+8 235/271

003 6,5/ 8.0 31,4/36,3

004 •.91 9.6 3•.9/43.1

005 12.0/14.7 33.4/38.5

460-3-60

YES

STD

HIGH

208/330-1-60 STD

YES

STD

YES

202/230-3-60

HIGH

YES

460-3-60 STD

YES

9,2 007 8.1 13.8

008 10.6 16.8

009 12.9 27.•

9.2 007 8.1 13.8

008 106 168

009 129 277

o_ 55 72

9.2 007 6.1 13.8

008 10.6 16.8

009 12.9 27.7

8.2 007 8.1 13.8

008 10.6 168

009 12.9 27.7

001 39/ 40 15.9/t 8.3

003 6.5/ 80 31.4/36.3

92 009+002 9.8/11.6 46.9/54.2

003+003 13.1/16.0 628/79.5

004+004 16.0/19.3 75.9/87.5

001 3.3/ 4.0 15.9/18.3

9.2 003 6 51 80 31.4/36.3

002+009 9 8/11 6 46.9/542

003+003 13.1/16.0 62.8/79.5

004+004 16.0/19.3 75.8/87.5

002 4,9/ 5/8 13,6/15,6

9.2 003 6,5/ 8,0 18,1/20,9

005 12/.014.7 33.4/38.5

004+004 16.0/19 3 43.8/50.5

002 49/ 58 13 6/15.6

9,2 003 69/ 8+0 181/209

005 12,0/14,7 33,4/38,5

064+004 16,9/19,3 43,8/80,5

002 49/ 5,8 13,6/15,6

9.2 003 6.9/ 8.0 181/209

005 12.0/14.7 33.4/36.5

004+004 16.0/19.3 43.8/50.5

002 4.9/ 58 13.6/15 6

9.2 003 6.9/ 8.0 18.1/20.9

905 12.0/14.7 334/88+5

004+004 16.0/19,3 43 8/50 5

oo6 72 T_

9.2 008 13.8 138

009 168 16,8

008+008 27 •27.7

82 008 13.8 13.8

009 16.8 16.8

008+008 27.7 27.7

DISCONNEUTSBE

FLA LRA

34/8/34.8 40/40 35/35 135

95.7/38.8 40/45 35/37 135

45.2/49.7 69/50 49/47 135

55.1/61.2 60/70 52/58 135

63.2/70.5 70/80 60/67 135

74.5/836 80/80 70/79 135

408/408 45/45 41/41 140

40.8/43.0 45/50 41/42 140

50.0/83.9 60/60 49/52 140

599/65/4 60/70 58/63 140

88.0/747 70/80 65/71 140

79,3/87,8 89/90 76/83 140

27.7/277 35/55 29/29 124

27,7/29,1 35/35 29/29 124

32,8/35,4 40/40 32/34 124

385/42.0 45/45 3•/40 124

432/474 45/50 41/45 124

575/64.0 60/70 55/60 124

33.•/33.• 40135 34/84 129

337/337 40/40 34/34 129

37.6/396 45/45 37/39 129

43.3/46.2 50/50 43/45 129

48.0/51.6 50/60 47/50 129

62.3/66.2 70/70 60/65 129

28.6/286 35/35 30/30 154

28.6/30.0 35/35 30/30 154

33.7/36.3 40/49 33/35 154

39 4/42.9 45/45 35/41 154

44.1/48.3 50/50 49/46 164

584/64.9 60/70 55/62 154

34.6/34.6 40/40 35/85 158

34.6/34.6 40/40 35/35 158

38.5/40,5 45/45 35/40 158

44.2/47.1 59/50 44/46 158

49.9/52.5 60/60 48/51 158

639/69.1 70/70 61/66 158

136 20 14 63

167 20 14 63

20.9 25 15 63

25.0 25 24 63

98.7 30 27 63

16.3 20 20 67

18.8 25 20 68

23.0 25 20 68

271 30 29 68

308 35 32 68

140 20 15 77

171 20 15 77

21.3 25 15 77

25.4 30 24 77

29.1 30 28 77

16,7 20 20 82

19.2 25 20 62

23.4 25 20 82

27.5 30 29 82

31.9 35 32 82

444/ 44+4 60/ 60 44/ 44 173

44.4/ 44.4 69/ 60 44/ 44 179

55.1/ 61.2 60/ 70 52/ 58 173

745/ 83 6 89/ 90 70/ 79 173

94+4/106,5 1001110 881100 173

110.6/125,2 125/150 109/117 173

50.4/ 50.4 60/ 60 50/ 50 178

504/ 50,4 60/ 60 50/ 50 178

59.9/ 65.4 69/ 70 58/ 63 178

793/ 87.8 89/ 90 76/ 83 178

99.2/110.7 100/125 94/104 178

115.4/129.4 125/150 109/122 178

31,7/31,7 40/40 33/33 140

32,8/35,4 40/40 33/34 140

38.5/42.0 49/45 37/40 140

57,5/64,0 60/70 55/60 140

706/79.0 80/80 67/74 149

37,7/37,7 40/40 38/38 145

37.7/39.6 45/45 38/39 145

43.3/46.2 50/50 43/45 145

62,3/68.2 70/70 60/65 145

75,4/83,2 80/30 72/79 145

32.6/32.6 40/40 34/34 170

33.7/36.3 40/40 3_35 170

39.4/429 45/45 38/41 170

58.4/84.9 60/70 59/62 170

71.5/79.9 80/80 68/75 170

38.6/386 45/45 39/39 174

386/405 49/45 39/40 174

44,2/471 50/50 44/46 174

63+2/69.1 70/70 6_/66 174

76+9/84 t 80/90 73/80 174

15.2 20 16 70

16.7 20 16 71

250 25 18 71

28.7 30 27 71

42.3 45 40 71

17.9 20 21 75

18.8 25 21 75

27.1 30 21 75

30.8 35 32 75

444 45 44 75

Table 1B -- Electrical Data (COBRA TM Energy Recovery 50HJ004-007 Units with 62AQ060) (cont)

UNIT

SIZE

5OHJOO5

(coQt)

50HJ006

ELECTRIC HEAT POWER SUPPLY" DISCONNECT SIZE

NOMINAL IFM CONV 6gAQ HEATER MODEL NO.

V-PH-Hz TYPE OUTLET FLA CRHEATER--AO0 Actual FLA MCA MOCP** FLA LRA

kWt

15.6 20 16 84

o_ 7_ ;:2 171 20 16 65

NO 9.2 008 13.8 13.8 25.4 30 19 65

009 168 165 29.1 30 28 85

460=3.60 008+008 27.7 27.7 42.7 45 40 85

(con1) HIGH 16.3 20 22 89

o_ _2 T_ 192 2s 22 9o

YES 9.2 008 138 13.8 27.5 30 22 g0

009 16.8 16.8 31.2 35 32 90

008+008 27.7 27.7 44.8 45 45 90

_ 55.5/ 55.5 70/ 70 56/ 56 250

002 4.9/ 5.8 I23.5/27.1 55.5/ 55.5 70/ 70 56/ 56 250

003 6.5/ 8/8 31.4/36.3 59.5/ 65.5 70/ 70 57/ 62 250

NO 9.2 002+002 9.7/11.6 46 9/84.2 78.9/ 87.9 80/ 90 75/ 83 250

003+003 13.0116.0 62.8/72.5 98.71110.8 100/125 93/104 250

004+004 155/193 75,8/875 1159/129.6 125/150 1081121 250

208/230-1-60 STD --/-- 61.5/ 61.5 70/ 70 61/ 61 255

002 4.9/ 5.8 23.5/27.1 61.5/ 61.5 70/ 70 61/ 61 255

003 6.6/ 8.0 31,4/36 3 643/ 697 70/ 70 621 67 255

YES 92 002+002 8.7/11.6 46.5/54.2 83.7/ 92.1 90/100 80/ 88 255

003+003 13.0/16.0 62.6/72.5 103.5/115.0 110/125 68/109 255

004+004 15.6/19.3 75.8/87.5 119.8/133.8 1251150 113/126 255

_38.1/88.1 45/ 45 39/39 202

002 4.9/ 5.8 13.6/15.6 38.1/38.1 45/ 45 39/39 202

NO 9.2 004 7.9/ 9.6 21.9/25.3 44.1/48.3 50/ 50 42/46 202

005 120/14 7 334/38 5 58.4#64,9 60/ 70 56/82 202

004+004 15 5/19.3 438/86/5 71/8/79 9 86/ 80 68/75 202

004+005 19.3/24.3 55.2/83.8 85.6/96.4 90/100 81/91 202

STD /44.1/ 44.1 50/ 50 44/44 207

002 4.9/ 5.8 13.6/15.6 44.1/ 44.1 50/ 50 44144 207

YES 92 004 7.9/ 9.6 21.9/25.3 48.9/ 52.5 60/ 60 48/51 207

005 12.0/147 334/38.5 632/ 69.1 70/ 70 61/66 207

004+004 15.8/19.3 43.6/50,5 76.3/ 84.1 80/ g0 73/80 207

004+005 19.9/84.3 552/63.8 90.6/100/8 100/110 86/95 207

209/230-3-60 __ --/-- --/-- 39.8/89.8 49/ 45 41/41 221

002 49/ 58 13.6/15.6 39,9/39 8 45/ 45 41/41 221

004 76/ 96 21.9/25.3 459/501 56/ 60 44148 221

NO 9,2 005 12,0/14.7 33.4/86/5 60,3/66,7 70/ 70 58/63 221

004+004 15.3/19.3 43.8/50.5 73.3/81.7 80/ 90 70/77 221

004+005 19,9/24.3 55,2/638 876/98,3 g0/100 83/93 221

HIGH I45.8/ 45.8 50/ 50 46/46 226

002 4.9/ 5.8 13.6/15.6 45.8/ 45.8 50/ 50 46/46 226

YES 9.2 004 7.9/ 9,6 21 9/25 3 50.7/ 54.3 60/ 60 50/53 226

005 123/14.7 33.4/38.5 65.1/ 70.9 70/ 80 63/68 226

004+004 158/19.3 43.8/50.5 78.1/ 85.9 80/ 90 75/82 226

004+005 19.9/24.3 55.2/63.8 92.4/102.5 100/110 88/97 226

19.3 25 20 101

0_6 5-_ 7-_ 19.3 25 20 101

NO 9.2 008 10.6 138 25.4 30 20 101

009 12.9 16.8 29,1 30 28 101

008+008 21.1 27.7 427 45 40 101

460-3-60 STD 008+009 234 30 1 464 50 44 101

22.0 25 25 106

o_ _-_ T_ 220 25 85 108

YES 9,2 008 106 13,8 27.5 30 25 106

009 12.g 16,8 31.2 35 32 106

008+008 21.1 27,7 44.8 45 45 106

008+009 23.4 30,1 48.5 50 48 106

LEGEND

ELA -- Full Load Amps

HACR -- Heating, Air Conditioning and Refrigeration

Example: Supply _oitage is 460-3-60.

AB =452v

A B CBC=464v

IFM -- Indoor (Evaporator) Fan Motor

LRA -- Locked Rofor Amps

MCA -- Minimum Circuit Amps

MOCP -- Maximum Overcurrent Protection

HEC -- National Eleofdcal Code

UL -- Underwriters' Laboratories

*The values listed in this table do not include power exhaust. See Power Exhaust

table for requirements.

tHeater capacity (kW) is based on heater voltage of 240v or 480v. If power distribu-

tion voltage to unit varies from rated, beater kW will vary accordingly.

**Fuse er HACR breaker.

NOTED:

1. In compliance with NEC requirements for mugimotor and combination load

equipment (refer 1o NEC Articles 430 and 440). the overcurTent protective device

for the unit shall be fuse or HACR breaker. UL, Canada units may be fuse er cir-

cuit breaker.

2. Unbofanced 3-Phase Supply Voltage

Never operate a motor where a phase imbalance in supp_ _ltage is greater

than 2%. Use the following formula to determine the percent of voltage

_mbalance.

=100 x max voltage deviation from average votia_e

a_erage voltage

0( )us

AC = 455v

Average Voltage = 452 + 464 + 455

1371

=457

Determine maximum deviation from average VOltage.

AB) 457 -452 = 5 v

BC) 464 457 = 7 v

AC 457 -455 = 2 v

Maximum deviation is 7v.

Determine percent of '_oftage imbalance.

% Voltage Imbalance= 1CO x 4_

= 153%

This amount of phase imbalance is satisfactory as it is below the maximum

allowable 2%.

IMPORTANT: If 1he supply voltage phase imbalance is more than 2%, contact I

your local electric utilhy company immediately. I

Table 1B -- Electrical Data (COBRA TM Energy Recovery 50HJ004-007 Units with 62AQ060) (cent)

UNIT

SIZE

6OHJEO6

(cant)

50H J007

NOMINAL IFM CONV 62AQ HEATER MODEL NO. ELECTRIC HEAT POWER SUPPLY* DISCONNECT SIZE

V-PH-Hz TYPE OUTLET FLA CRHEATER--A00 Actual

kWh" FLA MCA MOCP" FLA LRA

20.1 25 20 110

o_ _5 7.2 20.1 25 20 111

NO 9.2 008 10 6 13.8 26.2 30 20 111

009 12,9 16,8 299 30 29 111

008+008 21.1 27.7 43.5 45 41 111

460-3-60 008+009 23.4 30 1 47.2 50 44 111

(cont) HIGH 22.8 25 26 115

_ _2 22.6 25 26 116

YES 9.2 008 10.6 13.8 28.3 30 26 116

009 129 16.8 32.0 35 33 116

008+008 211 27.7 45.6 50 46 116

008+009 23.4 30.1 49.3 50 49 116

-- /-- --/-- 42.6/42.0 50/ 50 42/42 234

002 49/ 58 13.6/15.6 42.0/42.0 50/ 50 42/42 234

NO 92 004 7.6/ 9.6 21.9/25.3 44 1/48.3 50/ 50 42/46 234

005 12.0/14.7 33.4/38.5 584/64.9 60/ 70 56/22 234

004+004 158/19,3 43,8/50,5 71,5/79,9 80/ 80 68/25 234

208/230-3-60 STD 004+005 19,9/24,3 55,2/63,8 85,8/96,4 90/100 81/91 234

--/-- --_ 48.6/ 49.0 60/ 60 48/48 239

002 4.9/ 5.8 13.6/15.6 48.0/ 46.0 60/ 60 48/49 239

YES 9.2 004 7.9/ 9.6 21.9/25.3 48.9/ 52.8 60/ 60 48/51 239

005 12,0/14,7 33,4/38,5 632/ 69.1 70/ 70 61/66 239

004+004 158/19.3 43.9/50.5 76.3/ 841 80/ 90 73/80 939

004+005 19,9/243 55,2/63,8 90,6/100,6 100/110 86/25 239

--/-- _ 43,7/437 50/ 50 44/44 853

002 4,9/ 5.8 13,6/156 43,7/43,7 50/ 59 44/44 253

NO 9,2 004 7,0/ 9.6 21,9/253 45.9/50,1 50/ 60 44/48 253

005 12.6/147 33.4/38.5 60.3/66.7 76/ 70 58/63 253

004+004 15.8/19.3 43.6/505 73.3/81.7 86/ 90 70/77 253

004+005 19.9/243 552/63.8 87.6/98.3 90/100 83/93 253

206/230-3-60 HIGH --/-- --/ 497/ 49.7 60/ 60 50/50 258

002 4.6/ 5.8 13.6/156 49.7/ 49.7 60/ 60 56/50 258

YES 9.2 004 7.9/ 9.6 21 9/25.3 50.7/ 54.3 60/ 60 50/53 258

005 12.0/14.7 33.4/38.5 65,1/ 709 70/ 80 63/68 258

004+004 15.8/19.3 43.8/50.5 781/ 859 80/ 90 75/82 258

004+005 19.9/24.3 55.2/83,8 92.4/102.5 100/110 88/97 258

19.8 25 20 114

;-_ T/2 198 25 20 114

NO 9.2 60B 10.6 13.8 25.4 30 20 114

009 12,9 16,8 29,1 30 28 114

008+008 21 1 27,7 49,7 45 40 114

008+009 23,4 30,7 46 4 50 44 114

STD -- 22.5 25 26 119

0_6 5_ 72 22.5 25 26 119

YES 9.2 008 10.6 13.8 27.5 30 26 119

COg 12.9 168 312 35 32 119

008+008 91.1 277 44.8 45 45 11g

008+009 23.4 307 48.5 50 48 119

460-3-66 20.6 25 21 123

0_)6 5.5 7-_ 206 25 21 124

NO 9.2 008 106 13.8 26.9 30 21 124

009 129 16,8 29.9 30 99 124

CO8+008 21.1 27.7 43.5 45 41 124

HIGH 008+009 23,4 30,7 472 50 44 124

233 30 26 128

006 _5 7.2 233 30 26 128

YES 9.2 008 10.6 13.8 28.3 30 26 128

009 12.9 16.8 32.0 35 33 128

008+008 21.1 27.7 45.6 50 46 128

008+009 23.4 30.7 49.3 50 49 198

LEGEND

FLA -- Full Load Amps

HACR -- Heating, Air Conditioning and RefTigeration

IFM -- Indoor (Evaporator) Fan Motor

LRA -- Lccksd Rotor Amps

MCA -- Minimum Circuit Amps

MOCP -- Maximum Overcurrent Protection

NEC -- National Electrical Code

UL -- Underwriters' Laboratories

*The values listed in this table do not include powe_ exhaust. See Power Exhaust

table for requirements,

tHeater capacity (kW) is based on heater voitalgle of 240v or 480v1 If power distribu-

tion voRage to unit varies from rated, heater kW will vary accordingly,

**Fuse or HACR breaker

NOTES:

1, in compliance with NED requirements for multimotor and combination load

equipment refer to NED Articles 430 and 440 the overcurrent protective device

for he un t she be use or HACR breaker, UL, Canada units may be ft_se or cir-

cuit breaker.

2. Unbalanced 3-phase SuppPJ Voltage

Net_r operate a motor where a phase imbalance in supply w/rage is greater

than 2%. Use the following formula to determine the percent of voitage

imbalance.

=160 x max Voltage deviation from average 'mitage

average Voltage

Example: Supply ',_itage is 460-3-60.

AB=452V

AB c BC=464V

AC = 455v

Average Voltage = 452 ÷ 464 + 455

1371

= 457

Determine maximum deviation from average "_it age.

AS)457=452=Sv

BC) 464 457=7v

AD 457 - 458 =2 v

Maximum deviation is 7 v,

Delermioe percent o1vo8age imbalance,

% Voitage Imbalance= 100 x

=1,53%

This amount of phase imbalance is aatlafaetory as it is beiow the maximum

allowable 2%,

IMPORTANT: If the supply voltage phas_ imbalance is more than 2%, contact I

your local electric utility company immedialely. J

Table lC -- Electrical Data (COBRA TM Energy Recovery 48HJ004-007 Units with 62AQ100)

UNIT

SIZE

48HJO04

48HJO05

48HJ006

48HJ007

NOMINAL

V-PH-Hz

208/230-1-60

208/230-3-60

460-3-60

208/230-1-80

208/230-3-66

460-3-60

208/236/1-60

208/230-3-60

460-_60

208/236-3-60

460-3-60

IFM

TYPE

STD

HIGH

STD

HIGH

STD

HIGH

STD

HIGH

STD

HIGH

STD

HIGH

STD

HIGH

STD

HIGH

CONV 62AQ

OUTLET FLA

NO 15.1

YES 15.1

NO 15,1

YES 15.1

NO 15.1

YES 15.1

NO 15.1

YES 15.1

NO 15.1

YES 15.1

NO 15.1

YES 15.1

NO 15.1

YES 15.1

NO 15.1

YES 15.1

NO 15.1

YES 15.1

NO 15.1

YES 15.1

NO 15.1

YES 15.1

NO 15.1

YES 15.1

NO 15.1

YES 15.1

NO 15.1

YES 15.1

NO 15.1

YES 15.1

NO 15.1

YES 15.1

NO 15.1

YES 15.1

NO 15.1

YES 15.1

NO 15.1

YES 15.1

POWER SUPPLY*

MCA MOCPt

40.7/40.7 45/45

46.7/46.7 50/50

33.6/33.6 40/40

39.6/39.6 45/45

34.5/34.5 40/40

40.5/40.5 45/45

16,5 20

19.2 20

16.9 20

19.6 25

50.3/50.3 60/60

56.3/56.3 70/70

37.6/37.6 45/45

43.6/43.6 50/50

38.5/38.5 45/45

44.5/44.5 80/80

18.2 20

20.9 25

18.6 25

21.3 25

59,2/59.2 70/70

65,2/65.2 80/80

44.0/44.0 50/50

50.0/80.0 60/60

45.7/45.7 60/60

51.7/51.7 60/60

22.2 25

24,9 30

23.0 30

25.7 30

47.9/47,9 60/60

53.9/53.9 60/60

49.6/49.6 60/60

55.6/55.6 60/60

22.8 30

25.5 30

23.6 30

26.3 30

DISCONNECT SIZE

FLA LRA

42/42 161/161

48/48 166/166

36/36 150/150

41/41 155/155

37/37 180/180

42/42 184/104

18 78

20 78

18 90

20 93

51/51 199/199

57/57 204/204

39/39 166/166

45/45 171/171

40/40 195/196

46/46 200/200

19 84

22 86

19 98

22 100

60/60 266/266

65/65 270/270

46/46 226/228

51/51 233/233

46/48 247/247

50/53 252/252

23 114

25 117

24 124

26 126

49/49 260/260

55/55 265/265

51/51 279/279

57/57 284/284

23 127

26 129

24 137

27 139

LEGEND

FLA -- Full Load Amps

I-IACR -- Heating, Air Conditioning and Refrigeration

IFM -- Indoor (Evaporator) Fan Motor

LRA -- Locked Rotor Amps

MCA -- Minimum Circuit Amps

MOCP-- Maximum Overcurrent Protection

NEC -- National Electrical Code

UL -- Underwriters Laboratories

*The values listed in this table do not include power exhaust. See

Power Exhaust table for requirements.

_Fuse or HACR breaker.

NOTES:

1. In compliance with NEC requirements for multimotor and combi-

nation load equipment (refer to NEC Articles 430 and 440), the

overcurrent protective device for the unit shall be fuse or HACR

breaker. UL, Canada units may be fuse or circuit breaker.

2. Unbalanced 3-Phase Supply Voltage

Never operate a motor where aphase imbalance in supply volt-

age is greater than 2%. Use the following formula to determine

the percent of voltage imbalance.

=100x max voitage deviation from avera_e voltage

average voltage

Example: Supply voltage is 460-3-60.

As c AB = 452 v

_) BC _ 464 v

AC =455 v

452 + 464 + 455

Average Voltage = 3

1371

= 457

Determine maximum deviationfrom average voltage.

(AB) 457 - 452 = 5 v

BC) 464 - 457 = 7v

AC) 457 - 455 = 2 v

Maximum deviation is 7 v.

Determine percent of voltage imbalance.

% Voltage Imbalance = 100 x 457

-1.53%

This amount of hase imbalance is satisfactory as it is below the

maximum allowable 2%.

J IMPORTANT: If the supply voltage phase imbalance is more than2%, contact your local electric utility company immediately. J

UNIT

SIZE

50HJ008

00HJ008

Table 1D -- Electrical Data (COBRA TM Energy Recovery 50HJ004-007 Units with 62AQ100)

ELECTRIC HEAT

NOMINAL IFM CONV 62AQ HEATER MODEL NO.

V-PH-HZ rfPE OUTLET FLA CRHEATER--AO0 Actual FLA

kW,

001 3.3/ 4.0 15.0/18.3

NO 15.1 002 4.9/ 5.8 23.5/27.1

003 6,5/ 6,0 31.4/36,3

004 7.9/ 9,6 37/5/43.1

002+002 9,8/11.0 46,9/54.2

208/230-1/50 STD

001 3.3/ 4.0 15.9/18.3

YES 15.1 002 4.6/ 5.8 23,5/27,1

003 0,5/ 8,0 31,4/36,3

004 7,9/ 9,6 37,9/43,1

002+002 9.8/11.6 46.9/54.2

001 3.3/ 4.0 15.9/18.3

NO 15.1 062 4.6/ 5.8 23.5/27.1

003 6/5/ 8.0 31,4/36.3

004 79/ 9.6 37.9/43.1

005 120114.7 33.4/38.5

STD

001 3.9/ 4.0 15 9/18,3

YES 16,1 002 4.9/ 5.8 23,5/27 1

003 6.5/ 8.0 31.4/36.3

004 7.9/ 9.6 37.9/43.1

005 12.0/14.7 33.4/38.5

208/230-3-60 __ __/-- __/--

001 35/ 40 159/183

NO 151 002 4.9/ 5.8 23.5/27.1

003 6 5/ 8,0 31,4/36,3

004 76/ 96 37.9/43.1

005 12.0/14.7 33.4/38.5

HIGH

001 3.9/ 4.0 15.9/18.3

YES 15,1 002 4+6/ 5.8 23.5/271

003 6.5/ 8.0 31,4/36,3

004 7.9/ 9.6 37,9/43 1

005 12 0/14 7 33,4/38,5

466/3-60

205/208-1-60 STD

STD

YES

209/230-3-60

HIGH

YES

460-3-60 STD

YES

o_ _

NO 15.1 007 8.1 13.8

008 10.6 168

009 12.9 27.7

STD

008 _ T_

YES 15.1 007 8.1 13.6

008 10.6 16.8

009 12.9 27,7

0_6 5.5 T_

NO 15.1 007 8.1 13.8

008 10.6 16.8

009 12.9 27.7

HIGH

oo-6 _6 T_

YES 15.1 007 8.1 13,8

008 10.6 18.8

009 12.9 27,7

001 3,3/ 40 15,9/18,3

NO 15.1 003 65/ 8.0 31.4/36.3

002+002 98/11 6 46.9/54.2

003+003 131/16,0 62,8/72,5

004+004 169/1 g 3 758/875

001 3.9/ 4.0 159/18.3

YES 15.1 003 6.5/ 8.0 31.4/36+3

002+002 9.8/11.6 46.9/54.2

003+003 13.1/16.0 62.8/72.5

004+004 16.9/19.3 75.8/57.5

/-- --/--

002 4,9/ 5,8 13,6/106

15,1 003 6,54 8,0 16.1/20/5

006 12,6/14.7 33,4/38.5

004+004 16,0/19.3 438/505

002 --/-- --/--

49/ 5.8 13.0/15.6

15.1 003 6.5/ 8.0 18.1/20.9

005 12.0/147 33.4/38.5

004+004 16,0/19 3 43.8/50.5

0_)2 --/-- --/--

4.9/ 5.8 13.6/15 6

15.1 003 6.5/ 8.0 1811209

005 12.9/I 4.7 33 4/38 5

004+004 16.0/19,3 438/506

002 4.9/ 5.8 13.6/15.6

15.1 003 6.6/ 8.0 18.1/20.0

005 12.0/14.7 33.4/385

004+004 16.0/19.3 439/50.5

008 55 72

15.1 008 106 136

009 12.9 16.8

009+008 21.1 27.7

0_6 _

15.1 008 10.6 138

009 12.9 168

008+008 21.1 277

POWER SUPPLY" DISCONNECT SIZE

MCA MOCP** FLA LRA

40.7/40.7 45/ 45 42/42 161

42.6/45.5 50/ 60 49/44 161

52.5/56.5 60/ 70 50/54 161

61.9/07.9 70/ 70 59/55 161

70,0/77,3 80/ 80 67/73 161

81.3/90.3 90!100 77/55 161

46,7/46+7 55/ 50 46/48 166

47.3/49.7 60/ 60 40/40 166

56.0/60.7 70/ 70 56/59 166

667/72.1 70/ 80 65/70 166

74.8/81.5 80/ 90 72/78 166

861/94+5 99/100 82/90 166

33.6/33.6 40/40 36/36 150

34.1/35.9 45/45 36/36 150

39.6/42.2 50/50 39/41 150

45.9/48.8 60/50 44/47 150

50.0/54.2 60/50 40/52 150

64.3/70.7 70/80 61/57 150

39,6/59+6 46/45 41/41 155

39,6/40.1 50150 41/41 155

444/46,4 60/60 44/46 155

56,1/53,0 60/60 49/02 156

54,9/58,4 60/70 54/07 156

691/749 80/80 67/72 155

34,5/34.5 40/46 37/37 180

35/5/36.6 45/45 37/37 180

40.5/43.1 50/50 40/42 180

46.9/49.7 60/60 40/46 180

50.9/55.1 60/60 49/53 180

65.2/71.6 70/50 62/68 180

40.5/40,5 46/45 42/42 184

40.5/41.0 50/50 42/42 164

45,9/47,3 60/60 45/47 184

51,0/53,9 60/50 50/53 184

557159.3 70/70 55/58 184

70.0/75.8 80/80 68/73 184

16 5 20 18 70

20,1 25 18 76

24.3 30 18 77

28,4 35 27 80

32.1 35 31 83

19,2 20 23 80

22.2 30 23 81

26.4 30 23 81

30.5 35 32 82

34+2 40 35 85

16.9 20 16 90

20.5 25 18 90

24+7 3O 18 91

28.8 35 26 94

325 35 31 07

196 25 24 95

22.6 30 24 95

26.8 30 24 95

30.9 35 32 96

34,6 40 36 99

509/ 503 60/ 60 51/ 51 199

60.3/ 50.3 09/ 60 51/ 51 199

61.9/ 07.9 70/ 70 55/ 65 199

61.3/ 90.3 95/100 771 85 199

101.2/113.3 110/120 96/106 |99

117.4/132.0 125/150 110/124 199

56,9/ 56.3 70/ 70 57/ 57 204

56,3/ 66.3 70/ 70 67/ 67 204

66,7/ 72.1 70/ 80 65/ 70 204

861/ 94.5 90/100 82/ 90 204

106/0H 17.5 1101125 101/111 204

122.2./136.2 125/150 115/126 204

37,5/376 45/46 39/39 166

39.6/42+2 50/50 39/41 166

45.3/48,8 60/60 44/47 166

64.3/707 70/50 61/67 166

77.3/85.8 80/50 79/81 166

43,6/43.6 50/50 45/46 171

44,4/46.4 60/60 45/46 171

50.1/53.0 60/50 49/52 171

69.1/74.9 80/80 67/72 171

82.1/60.0 90/90 79/86 171

38.5/36.5 45/45 40140 196

40 5/43.1 50/50 40/42 196

46,2/49,7 60/50 40/48 196

65.2/71.6 70/50 62/68 196

78.2/86.7 80/90 74/52 196

44.5/44.5 59/ 50 46/46 200

45.3/47.3 69/ 60 46/47 200

51.0/53.9 60/ 60 50/53 200

70.0/75.8 801 80 68/73 200

83 0/90.9 901100 80/87 200

18.2 20 19 83

20.1 25 19 84

28.4 35 19 84

32.1 30 31 84

45.6 50 43 94

20.9 25 25 88

222 30 25 88

30.5 35 25 88

342 40 35 88

477 60 48 96

Table 1D -- Electrical Data (COBRA TM Energy Recovery 50HJ004-007 Units with 62AQ100) (cont)

UNIT

SIZE

50HJ006

(corn)

50H0606

NOMINAL IFM COHV 62AQ HEATER MODEL NO.

V-PH-Hz TYPE OUTLET FLA CRHEATER--A06

0_6

15.1 008

006

460-3-60 008+008

(cont) HIGH

YES 15.1 008

009

008+008

NO 15.1 003

009+002

003+603

004+004

206/906-1-60 STD

YES 15.1 003

002+002

003+003

004+004

NO 15.1 004

OO5

004+004

004+005

STD

YES 15.1 004

005

004+004

208/230-3-60 004+605

NO 15.1 004

005

004+004

004+005

HIGH

YES 15.1 004

13115

004+004

004+005

NO 15.1 006

006

008÷008

469/6/60 STD 008+009

006

YES 15.1 00B

009

008+006

006+069

ELECTRIC HEAT

Actual

kWt FLA

106 13.8

12,9 16,8

21.1 277

106 13.8

12.9 16.8

21.1 277

--/-- /--

4.9 5.8 23.5/27.1

6.5/ 8.0 31.4/36,3

8.7/11.6 46.9/54.2

13.0/16.0 62.8/72.5

15,6/19.3 75.6/87.5

49/ 5.6 23.9/27.1

6.5 /8.0 31.4/36.3

87/11.9 46.9/54.2

130/160 62.8/72.5

15.9/19.3 75.8/875

4,9/ 58 136/156

7,9/ 96 21,9/253

12,0/14,7 33,4/38,5

15.8/193 43.8/50.5

19,9/24,3 55,2/638

4,9/ 5,8 13,6/15,6

7,9/ 9,6 21,9/25,3

19,6/14,7 334/385

156/19,3 438/50,5

19,9/24,3 55,2/63,8

4.9/ 5,8 13.6/15,6

7,9/ 9,6 21.9/25.3

12,6/14,7 33.9/38.5

15.8/193 43.8/50.5

19,9/24,3 552/63,8

49/ 58 13,6/15,6

7.9/ 9.6 21.9/25 3

120/14.7 33.4/38.5

158/19.3 43.8/50.5

199/24.3 55.2/63.8

_/5 _.2

10.6 13.8

12.9 16.6

21.1 277

23.4 301

_-_ 7.2

10.6 13.8

12.9 16.6

21.1 27.7

23,4 30.1

POWERSUPPLY* DISCONNEC'rSIZE

MCA MOCP** FLA LRA

18.6 25 19 97

20.5 25 19 98

25.8 36 19 98

32.5 35 31 98

46.0 50 43 108

213 25 25 102

226 30 25 103

30.9 35 25 103

346 40 36 103

46.1 50 46 110

61.4/ 61.4 70/ 70 62/ 62 276

61.4/ 61.4 701 70 62/ 62 276

658/ 71,8 70/ 80 64/ 69 276

85.2/ 94.2 90/100 81/ go 276

105,1/117,2 110/125 100/111 276

121,3/135,9 125/150 115/128 276

674/ 67.4 80/ 80 66/ 68 281

67.4/ 67.4 80/ 80 68/ 68 281

70.6/ 760 80/ 80 69/ 74 261

90.0/ 98.4 90/100 87/ 95 281

109.9/121.4 119/125 1051116 281

126.1/140.1 150/106 120/133 281

446/ 44.0 50/ 50 46/46 228

44.6/ 44.0 50/ 50 46/46 228

50.9/ 55.1 60/ 60 49/53 228

65.2/ 71.6 76/ 80 62/68 225

78.2/ 86 7 86/ 90 74/89 228

92,6/103,2 100/110 68/97 226

500/ 560 66/ 60 51/ 51 233

50.6/ 50.0 60/ 60 51/ 51 233

557/ 593 70/ 70 55/ 58 233

70.0/ 758 80/ 86 68/ 73 233

83,0/ 90.9 90/100 86/ 87 233

97,4/107.4 100/110 93/102 233

457/ 45.7 63/ 60 48/48 247

45.7/ 45.7 60/ 60 48/48 247

526/ 56.8 60/ 70 51/55 247

669/ 73.3 70/ 80 64/70 247

79.9/ 88.4 80/ 90 76/84 247

94,3/104 9 100/110 90/99 247

51.7/ 51,7 60/ 60 53/ 53 252

51.7/ 51.7 66/ 60 53/ 53 252

57 461 0 70/ 70 57/ 60 252

71.7/ 77 5 86/ 80 76/ 75 252

847/ 92.6 96/100 82/ 88 252

99 1/1091 100/104 95/104 252

22.2 25 23 114

288 35 23 114

32.5 35 31 114

46.0 50 43 114

49.8 50 47 114

249 30 28 119

24.9 30 28 119

309 35 28 119

346 40 36 119

48.1 50 48 119

51.9 60 52 119

LEGEND

FLA -- Fult Load Am11)_s

HACR Heating, Air _ondltioning and Refrigeration

IFM -- Indoor (Evaporator) Fan Motor

LRA -- Locked Rotor Amps

MCA -- Minimum Circuit Amps

MOCP -- Maximum Overcurrenl Protection

HEC -- National ElectdcalCode

UL -- Under_riters' Laboratories

*The values listed in this table do not include power exhaust. See Power Exhaust

table for requirements.

/"Heat er capacity kW is based on heater voltaLg*eof 240v or 480v. If power distribu-

tion voltage to unit varies from rated, healer kW will vary accordisgly.

**Fuse or HACR breal_r.

NOTES:

1. In compliance with NEC requirements for mulUmotor and combination load

equipment (refer to NEC Articles 430 and 440), the overcurrenl protective device

for the unit shalt be fuse or HACR breaker. UL, Canada units may be fuse or cir-

cuit breaker.

2. Unbalanced 3-Phase Supply Voitage

Never operate a motor where aphase imbalance in supply _ltage is greater

than 2%. Use the following formula to determine the percent of voltage

imbalance.

=100 xmax voltage deviation from average voltage

average _oltage

Example: Supply voltage is 460-3-60.

AB - 452 v

A g C BC=464V

AC =455v

Average Voltage =, 452 +464 +455

1371

-457

Determine maximum d_'ia6on from average _oltage.

AB 457-452=5v

IBC/464 - 457 =7 v

(AC) 457 - 455 = 2 v

Maximum deviation is 7 v.

Determine percent of voflage imbalance,

%Voltage Imbalance= tOO x

=1/53%

This amount of phase imbalance is satisfactory as it is below the maximum

allowable 2%.

IMPORTANT: I1 the supply voltage phase imbalance is more than 2%, contact |

your local electric utility company imm edlat ely. J

Table 1D -- Electrical Data (COBRA TM Energy Recovery 50HJ004-007 Units with 62AQ100) (cont)

UNIT

SIZE

50HJ906

(cont)

50HJO07

ELECTRIC HEAT POWER SUPPLY* DISCONNECT SIZE

NOMINAL IFM CONV 62AQ HEATER MODEL NO.

V-PH-HZ TYPE OUTLET FLA CRHEATER--A00 Actual

kWt FLA MCA MOCP *° FLA iRA

230 30 24 123

0_6 5-_ 7,2 23.0 30 24 124

NO 15.1 008 10.6 138 29.6 35 24 124

009 12.g 16.8 33.3 35 32 124

008+006 21.1 277 46.8 50 44 124

460-3-60 HiGH 008+009 23,4 30,1 50.6 60 46 124

(colt) -- 25.7 30 29 128

006 5.5 7.2 25*7 30 29 129

YES 15.1 008 10.6 13.8 31.7 35 29 129

00g 12.9 16.8 35.4 40 37 129

008+008 21.1 27.7 48.9 50 49 129

008+009 23,4 30,1 52.7 60 53 129

--_ --I-- 47.9/ 47.9 60/ 60 49/49 260

002 4.9/ 5+8 13.6/15.6 47+9/ 47.9 60/ 60 49/49 260

NO 15,1 004 79/ 9.6 21.9/25.3 50.9/ 55.1 60/ 60 49/53 260

005 12.0/14.7 33A/58.5 65.2/ 71,6 70/ 80 62/66 260

004+004 15,8/19.3 43.8/50.5 78+9/ 86.7 80/ 90 74/82 260

STD 004+005 19.9/24.3 55.2/638 92.6/103.2 100/110 88/87 260

0_2 --/-- --/ 53.9/ 53.5 60/ 60 59/ 55 265

4.9/ 5.8 13.6/15.6 53.9/ 53.9 60/ 60 55/ 55 265

YES 15.1 004 7.9/ 96 21.9/25.3 55.7/ 59,3 70/ 70 55/ 58 265

005 12,0/147 33.4/38.5 700/ 758 80/ 80 68/ 73 265

004+004 15.9/19.3 43.8/50.5 83.0/ 90.9 90/100 80/ 87 265

208/230o3-60 004+005 19.9/24.3 55.2/63.8 974/107.4 100/110 93/102 265

--_ --/-- 49.6/ 49.6 60/ 60 51/51 279

002 4,9/ 58 13.6/15.6 49,0/ 49.6 60/ 60 51/51 279

NO 15,1 004 7,9/ 9,6 21.9/25.3 52,6/ 56,8 60/ 70 51/55 279

005 120/147 33.4/38.5 66.9/ 73.3 70/ 80 64/70 278

004+004 15 8/19,3 43.8/50.5 79,9/ 88,4 80/ 90 76/84 279

HIGH 004+005 19,9/24,3 55.2/63,8 943/104,9 100/110 90_9 279

-- --/-- --/-- 55.6/ 55.6 66/ 60 57/ 57 284

002 4,6/ 5,6 13,6/15,6 55,6/ 55.6 60/ 60 57/ 57 284

YES 15.1 004 79/ 9.6 21.6/25.3 57.4/ 61.0 70/ 70 57/ 60 284

005 12,0/14.7 33.4/38,5 71.7/ 77.5 80/ 80 70/ 75 284

004+004 15.8/19.3 43,8/50.5 84.7/ 92.6 90/100 82/ 89 284

004+005 19.9/24.3 55.2/63.8 99.1/109.1 100/110 951104 264

0o6 _T_ 22.8 85 23 127

22.8 30 23 127

NO 15.1 008 10.6 13.8 28.8 35 23 127

009 12.9 16.8 32.5 35 31 127

008+008 21.1 27.7 46.0 50 43 127

STD 008+009 23.4 30.7 49.8 50 47 127

oT5 _-_ 72 95.5 80 29 t3t

255 30 29 132

YES 15.1 008 10.6 13.8 30.9 35 29 132

009 12.9 16.8 34.6 40 36 132

008+008 21 127.7 48.1 50 48 132

460-3-60 008+009 23,4 30.7 51.9 60 52 132

s-_ 72 23,6 30 24 t36

23.6 30 24 137

NO 15.1 008 10.6 138 29.6 35 24 137

009 12.9 168 33.3 35 32 137

008+008 21.1 27.7 46.8 50 44 137

HIGH 008+009 23,4 30,7 56,6 60 48 137

_-_ 7_ 263 30 80 141

26.3 30 30 141

YES 15,1 008 10,6 13.8 31,7 35 30 141

009 12,9 16.8 35,4 40 37 141

008+008 21.1 27.7 48.9 50 49 141

008+009 23.4 30.7 53,7 60 53 141

LEGEND

FLA -- Full Load Amps

HACR -- HeaSng, AgCoed9ioningaedRofrigeration

IFM -- Indoor (Evaporator) Fan Motor

LRA -- Locked Rotor Amps

MCA -- MtsimumCircuRAmps

MOCP -- Maximum Overeurrenl Protection

NED -- National Electrical Code

UL -- Underwr_ers' Laboratories

*The values listed in this table do not inciode power exhaust. See Power Exhaust

table for requirements.

theater capacity kW) is based on heater volta eo1240v or 480v. If power d s rbu-

t/on voltage to unh wries from rated, heater k_'_will vary accordingl_

**Fuse or HACR breake_

NOTES:

1, In compliance with NEC requirements for touR/motor and combination load

equipment (refer Io NEC Articles 430 and 440), the overcurrent protective device

for the un8 shait be fuse or HACR 0ieake_ UL, Canada units may be fuse or cir-

cuit breake_

2. Unbalanced 3-Phase Supply Voltage

Never operate amotor where a phase imbalance m supply voltage is greater

than 2%. Use the following formula to de/ermine the pement of voltage

/tuba/once,

-100x max v°_lage deviati°n fr°m average v°ita_e

8verage voltage

Example: Supply voSage is 460.3-60,

ABcAB=452V

SC=464v

AC =455v

Average Voltage = 452 +464 +455

1371

=457

Determine maximum deviotkon from average voltage.

AB 457 -452 =5 v

IBCI 464-457 = 7 v

(AC) 457 - 455 = 2 v

Maximum deviation is 7 v.

Determine percent of voltage imbalance.

% Vogage _mbalance= 100 x

= 1.53%

This amount of phase imbalance is satisfactory as it is below the maximum

aliowabts 2%.

3';'

Table 1E -- Electrical Data (COBRA TM Energy Recovery 48HJ008-014 Units with 62AQ200)

UNIT

SIZE

48HJOO8

48HJ009

48HJ012

48HJ014

NOMINAL

V-PH-HZ

208/230-3-60

460-3-60

208/230-_60

460-_60

208/230-3-60

460-3-60

208/23_3-60

460-_60

IFM

TYPE

STD

HIGH

STD

HIGH

STD

HIGH

STD

HiGH

STD

HIGH

STD

HIGH

STD

CONV 62AQ POWER SUPPLY*

OUTLET FLA MCA MOCPI"

NO 21.9 60.1 70

YES 21.9 66.1 70

NO 21.9 63.2 70

YES 21.9 69.2 80

NO 10.2 29.4 35

YES 10.2 32.1 35

NO 10.2 30.8 35

YES 10.2 33.5 35

NO 21.9 62.1 70

YES 21.9 68.1 70

NO 21,g 65.2 70

YES 21.9 71.2 80

NO 10.2 31.7 35

YES 10,2 34.4 40

NO 10.2 33.1 35

YES 10.2 35.8 40

NO 21,9 74.9 80

YES 21,9 80.9 90

NO 21,9 79,3 90

YES 21,9 85.3 90

NO 10,2 35.1 40

YES 102 37.6 45

NO 10.2 37.7 40

YES 10,2 40.4 45

NO 21.9 82.5 90

YES 21.9 86,5 100

NO 10,2 39.3 45

YES 10,2 42.0 50

DISCONNECT SIZE

FLA LRA

66 366

71 371

69 391

75 395

32 184

34 186

34 197

36 199

68 400

73 405

71 425

77 429

34 206

37 208

36 219

38 221

81 465

87 469

86 488

92 493

38 234

40 236

41 245

43 247

89 550

95 555

43 270

45 272

LEGEND

FLA -- Full Load Amqp.,s

HACR -- Heating, Air Conditioning and Refrigeration

IFM -- Indoor (Evaporator) Fan Motor

LRA -- Locked Rotor Amps

MCA -- Minimum Circuit Amps

MOCP-- Maximum Overcurrent Protection

NEC -- National Electrical Code

UL -- Underwriters' Laboratories

Example: Supply voltage is 460-3-60.

AecAB--452v

(_ BC = 464 v

AC = 455 v

Average Voltage = 452 + 464 + 455

1371

*The values listed in this table do not include power exhaust. See

Power Exhaust table for requirements.

tFuse or HACR breaker.

NOTES:

1. In compliance with NEC requirements for muitimotor and combi-

nation load equipment (refer to NEC Articles 436 and 440), the

overcurrent protective device for the unit shall be fuse or HACR

breaker. UL, Canada units may be fuse or circuit breaker.

2. Unbalanced 3-Phase Supply Voltage

Never operate a motor where aphase imbalance in supply volt-

age is greater than 2%. Use the following formula to determine

the percent of voltage imbalance.

-- 10Ox max voitage deviation from average voitage

average voltage

=457

Determine maximum deviation from average voltage.

(AB) 457 - 452 = 5 v

(BC) 464 - 457 = 7 v

(AC) 457 - 455 _-2 v

Maximum deviation is 7 v,

Determine percent of voltage imbalance.

% Voltage Imbalance = 100 x 4_

= 1,53%

This amount of phase imbalance is satisfactory as it is below the

maximum allowable 2%.

IMPOR]ANT: If the supply voltage phase imbalance is more than2%, contact your local electric utilitycompany immediately. ]

Table 1F -- Electrical Data (COBRA TM Energy Recovery 50HJ008-014 Units with 62AQ200)

UNIT

SIZE

s0_J00a

50H J009

NOMINAL

V-pH-Hz

460-3-60

_3_50

IFM CONV 62AQ HEATER MODEL NO. ELECTRIC HEAT

TYPE OUTLET FLA CRHEATIER--A00 Actual I_N FLA

-- --I-- --/--

017 7.8/ 96 21¸7/ 25,0

010 12.0/14.7 33,4/ 38,5

NO 21,9 011 18,6/22.8 51,7/ 59,7

012 24.0/29¸4 66,7/ 770

012+017 31,8/38.9 88,4/102¸0

STD

017 7.0/ 96 21,7/ 25 0

010 12,0/14,7 33,4/ 38,5

YES 21.9 011 18,6/22¸8 51,7/ 59,7

012 24.0/29¸4 66,7/ 770

012+017 31,8/389 88,4/102,0

--I-- --/--

017 7,8/ 9,6 21,7/ 25,0

016 12,0/14,7 33,4/ 38,5

NO 21,9 011 18 6/22,8 51,7/ 59,7

012 24¸0/29,4 86,7/ 77,0

012+017 31,8/38¸9 88,4/102,0

_IGH --/-- --/--

017 781 9,6 21,7/ 25,6

010 12,0/14,7 33,4/ 38,5

YES 219 011 18,6/22,8 51,7/ 59,7

012 24,0/29,4 667/ 77,0

012+017 31¸8/38¸9 88,4/102¸0

ST£_

_IGH

STD

YES

016 1_-_ 16,7

013 15.2 19.8

21.9 014 25.5 33.4

015 30.3 39.7

014+016 38,3 50.2

016 12.8 16.7

013 15.2 198

21.9 014 25,5 33,4

015 30.3 39.7

014+016 383 502

o% 12.-a 16.-7

013 15.2 19,8

21.9 014 25.5 33.4

015 30.3 39.7

014+016 38.3 50.2

I I i

016 12.8 16.7

013 15,2 19,8

21,9 014 25,5 33,4

015 30.3 39,7

014+016 36,3 50,2

017 7.8 /96 21.7/ 25.0

010 120/14.7 33.4/ 38.5

21.9 011 18 6/22._ 51.7/ 59.7

012

012+017

017

YES 21.9 010

011

012

012+017

05-7

NO 21.9 010

011

612

012+017

HIGH oT7

010

YES 21 9 011

012

012+017

016

NO 21.9 013

014

015

014+016

STD

016

YES 21.9 013

014

015

014+016

016

NO 219 013

014

015

014+016

H',G,H

016

YES 219 013

014

015

014+016

POWER SUPPLY*

MCA MOCP"

601! 60.1 78/ 70

60,1/ 64.0 70/ 80

74.5/ 80.9 80/ 90

97.4/107.4 100/110

! 16.2/129.0 125/150

143.5/160,3 150/175

66.1/ 66.1 70/ 70

66.1/ 68.2 80/ 8O

79.3/ 85.1 90/ g0

102.2/111.6 115/125

121,5/133 2 125/15011

148.1/164.5 150/175

63._J 6,3.2 70/ 70

632/ 67.1 80/ 80

775/ 84.0 90/ 90

100.5/116.5 1101125

119,a/132,1 125/150

146.4/163.4 1501175

69.2/ 69.2 85/ 80

69.2/ 71.3 80/ 80

82.4/ 88 2 90/1 CO

105.3/114.7 110/125

12411136.3 125/150

151.2/167 6 175/175

29.4 35

36.1 40

400 45

570 60

648 70

77.9 80

32.1 35

38.2 45

42.1 45

59,1 60

66.9 70

80.0 80

30.8 35

37,5 40

41.4 45

58.4 60

66.2 70

79.3 80

33,5 35

39.6 45

43.5 45

60.5 70

68.3 70

81.4 90

62.1/ 62.1 75/ 70

62.1/ 64.0 70f 80

74 5/ 80.9 80[ go

g7.4/107.4 100/110

24.5/29.4 66.7/ 77.0 116.2/129.0 125/150

31.5/38.9 88.4/1020 143.3/1603 150/175

--/-- --/-- 68.1/ 68.1 75/ 70

7.5/ 9.6 21,7/ 25,0 68,1/ 68,2 80/ 80

12.0/14.7 33¸4/ 38,5 79¸3/ 85,1 90/ go

18.5/22,_ 51,7/ 59,7 102.2/111,6 110/125

24,0/29¸4 66,7/ 77,0 f 21,5/133,2 125/150

31,8/38¸9 88,4/102,0 148,1/164,5 150/175

--/-- --/-- 65.2/ 65,2 70/ 70

7,8/ 9,6 21,7/ 25,0 65,2/ 67,1 80/ 8Q

12,0/14,7 33,4/ 38,5 77,5/ 84,0 90/ 90

18,6/22,8 51,7/ 59,7 100,5/110¸5 1101125

24,0/29¸4 66,7/ 77,0 119,0/132,1 125/150

31,8/38,9 88,4/1Q2 0 146,4/163¸4 150/175

--/-- --!-- 71,2/ 71,2 85/ 80

7,8/ 9,6 21,7/ 25,8 71,2/ 71.3 80/ 80

120/14,7 334/ 385 82.4/ 88,2 90/100

18,5/22,8 51,7/ 59.7 105,5/114.7 110/125

240/29,4 68.7/ 77,0 124.1/136.3 125/150

31 8/38J 88.4/102.0 151.2/167,6 175/175

-- 31,7 35

12,8 16,7 36,1 40

15,2 198 40,0 45

25,5 33,4 57,9 69

30,3 39,7 64,8 70

38.3 502 77.9 80

-- L 34,4 40

128 167 38,2 45

15,2 19,8 42.1 45

25,5 33,4 59.1 60

303 39,7 66.9 70

38,3 50,2 80,0 80

-- -- 33.1 35

12,8 16,7 37,6 40

152 19,8 41,4 45

25.5 33.4 584 60

303 39.7 662 70

38,3 50.2 79,3 80

m-- 35,8 40

128 167 396 45

152 19,8 43,5 45

25,5 33,4 60,5 70

30,3 39,7 68,3 70

38 3 502 81.4 90

DISCONNECT SIZE

FLA LRA

66/ 66 366

72/ 78 366

93/102 366

1111122 366

135/151 366

71/ 71 371

711 71 371

78/ 83 371

99/107 371

116/127 371

1411156 371

65/ 69 391

76/ 82 391

97/106 891

114/126 391

135/155 391

75/ 75 395

81/ 86 395

102/111 395

120/131 395

145/160 395

32 184

35 184

38 184

54 184

61 184

73 184

34 186

37 186

41 186

57 186

64 186

76 186

34 196

36 197

4Q 197

56 197

63 197

75 197

36 196

39 199

42 199

58 199

65 199

77 199

68/ 68 400

65/ 68 400

72/ 78 400

95/102 400

111/122 400

135/151 400

73/ 73 405

78/ 83 405

99/107 405

116/127 405

1411156 405

71/ 7t 425

71/ 71 425

70/ 82 425

971106 425

114/126 425

139/155 425

72/ 77 429

77/ 77 429

81/ 86 429

102/111 429

120/131 429

145/160 429

34 2O6

35 2O6

36 2O6

54 2O6

61 206

73 206

37 208

41 208

57 208

64 208

76 208

36 218

36 219

40 219

56 219

63 219

75 219

38 22O

39 " 221

42 221

58 221

65 221

77 221

Table 1F wElectrical Data (COBRA TM Energy Recovery 50HJ008-014 Units with 62AQ200) (cent)

UNIT NOMINAL

SIZE V-PH-Hz

208/230 3-60

50HJ012

460-3_O

208/230-3-50

50HJ014

460-3-60

IFM CONV 62AQ HEATER MODEL NO. ELECTRIC HEAT POWER SUPPLY* DISCONNECT SIZE

TYPE OUTLET ELA CRHEATER--A80 Actual kW FLA MCA MOCP** FLA LRA

-- /-- --/ 749/ 74.9 89/ 80 81/ 81 465

017 7.9/ 9.6 21.7/ 25.0 74.9/ 74.9 80/ 80 81/ 81 465

010 12.0/14.7 33.4/ 38.5 77.6/ 84.0 90/ 90 81/ 82 465

NO 21.9 012 240/29.4 66.7/ 77.0 119.3/132.1 129/150 114/126 465

012+017 31.8/38.9 88.4/102.0 146.4/163.4 159/175 f39/155 465

010+012 37.9/45.9 104.9/104.2 166.2/156.2 175/175 157/176 465

STD -- /-- --! 80,9/ 80.9 90/ 90 87/ 87 469

017 7.8[ 9.6 21.9/ 25.0 80.9/ 80.g 90/ 90 87/ 87 469

010 12.0/14.7 33.4/ 38.5 82.4/ 88.2 90/180 87/ 87 469

YES 21.9 012 24.9/29.4 66.7/ 77.0 124.1/138.3 125/150 120/131 469

012+0_7 31.8/38.9 8B.4/102.0 151.2/167.6 175/175 145/160 469

010+012 375/45.9 104.9/120.3 171.0/1604 179/175 160/181 469

-- --/-- --/-- 79.5/ 79.3 90/ 90 89/ 86 488

017 7.9/ 9.8 21.71 25.0 79.5/ 79.3 90/ 90 86/ 86 488

NO 21.9 010 12.9/14.7 33.4/ 38.5 82.9/ 88.8 90/100 86/ 87 488

012 24.0/29.4 667/ 77.0 1240/136.9 129/150 119/131 488

012+017 31.8/389 88.4/1020 151.1/168.2 170/175 144/160 488

0!0+012 37.5/45,9 104,9/120,3 170.9/160,9 179/200 162/181 488

t_tPoH -- --/-- --/-- 85.5/ 85.3 99/ 90 99/ 92 493

017 70/ 9,6 21.0/ 25.0 85,9/ 853 99/ g(] 92/ 92 493

010 12 0/14.7 33.4/ 38.5 87.1/ 930 109/100 92/ 92 493

YES 21.9 012 24.9/294 66.7/ 77.0 128.9/141.t 150/150 120/136 493

012+017 81,8/389 884/102,0 155,9/172,4 !79/175 1501165 493

010+012 37.9/45.9 104.2/120.3 175.7/165.1 200/200 169/186 493

STD

HtGH

STD

HIGH

YES

0T6 12_8 16.7

013 15.2 19.8

21.9 o15 30.3 39.7

014_,o18 38.3 50.2

013+o15 45.9 60.1

OT6 12.8 16.7

21.9 013 152 19.8

015 30.3 39.7

014+016 383 50.2

013+815 45.9 60.1

0T6 12"J3 16-X

013 15.2 19.8

21.9 016 30.3 39.7

014+016 38.3 50.2

013+015 459 60.1

oTe 12.-8 16.-7

013 15.2 19.8

YES 21.9 915 30.3 39.7

014+016 38 3 502

013+015 459 60,1

817 7.8/ 96 21.7/ 25.0

010 12.0/147 33.4/ 38.5

NO 21.9 012 24.0/29.4 66.7/ 77.0

012+017 3f B/3B.9 88,4/192.0

010+012 37.5/45.9 104.2/120.3

017 79/ 9.6 21.7/ 25.0

YES 21.9 0!0 120/14.7 334/ 38.5

0_2 24.0/29.4 667/ 77.0

012+017 31,8/38.9 88.4/102.0

010+012 37,6/45,9 104.2/120.3

YES

01_ 9 6 16.7

21.9 013 14.7 19.8

015 29.4 39.7

014+016 389 50.2

0!3+015 45.9 60.1

016 9 6 16,7

21.9 0!3 147 19.8

015 29,4 39,7

014+016 389 50,2

013+015 45,9 60.1

351 40 38 233

37.5 40 38 234

41.4 45 40 234

66.2 70 63 234

79.3 80 75 234

76.7 90 88 234

37.8 40 40 235

39.6 45 40 236

435 45 42 236

68.3 70 65 236

81.4 90 77 286

78.8 90 89 236

37.7 40 41 245

40.3 45 41 245

44.3 50 43 245

69.1 70 66 245

82.1 90 78 245

79.6 90 89 245

40.4 45 43 247

42.4 59 43 247

46.4 50 45 247

71 *2 80 68 247

842 90 80 247

81.7 90 92 247

82.9/ &?..5 90/ 90 89/ 89 550P=JoO

82.0/ 82.5 90[ 90 89/ 89 559/550

82.0/ 8th8 90/100 89/ 89 559/550

124.0/136.9 120/150 119/t31 550/550

151 1/168.2 175/175 144/160 559/550

1709/160.9 175/200 162/181 550/550

88.9/ 88.5 100/100 99/ 95 5551555

88.9/ 88.5 100/100 99/ 95 556/555

871/ 93.0 100/100 95/ 95 555/555

128.8/141.1 150/150 120/136 555/555

1559/172.4 175/175 160/165 555/555

1757/165.1 200/200 1681186 555/555

393 45 43 260

40.3 45 43 250

44.3 50 43 260

69.1 70 66 260

821 90 78 260

796 90 89 260

42.0 45 45 262

42 4 50 45 262

464 50 45 262

71.2 80 _262

84 290 262

81.7 90 9_ 262

LEGEND

FLA -- Full Load ALnmss

HACR Heating, Air Conditioning and Refrigeration

IFM Indoer(Evaporator) Fan Motor

Lo_ked Rotor s

McALRA Minimum Circult_Sps

MOCP -- Maximum(_,_rcurrentProtectlon

NEC -- National Electrical Code

UL -- UnderwrP,ers' Labor atoffes

°]_e values listed in this table do not include power exhaust. See Power ExhaUSt ta_e for

requirements.

theater capacity (IPiV is based on heater voltage of 246v or 480v, If power distribution

voltage to unit varies from Paled, heater kW wltl vary accordirrgly.

**Fuse or HACR breaker.

NQTE_:

1. In compllsnce with NEC requirements for multimctor and o0mbinatlon load eqUll0meent

(refer to NEC Articles 430 and 440), the c_ercurrent protective device for the un_ shall

be fusn or HACR breaker. UL, Canada unit_ may be fuse or"cimult breaker.

2Unbalanced _Phase Supply Voltage

Never opetate a motor whete a phase imbalance kTs_/ vo_age is gleater than 2%.

Use the fotlowtng formula to determine the percent of voltage imbalance.

= 100 x max voltage de_ation from m,eraRe voltage

average voltage

Exanvpte: SUpply voltage is 460-3-60.

AB = 452 v

A B C BC = 464v

_AC=455 v

A_rage Voltage = 452 + 464 + _55

I371

= 457

Determine maximum deviation from a',_srage voltage.

A_A_C}457 - 4_" = 5v

BC 4!14 457 = 7v

467-455 = 2v

Maximum deviation is 7 v.

Determine pement of voltage tr011al_r_.

%'_age Imbalance = 1COx _

= 1.53%

This amount of phase imbalance is sat_f_tory as ff _s below the maximum _lk_abl6

2%.

JMPORTANT: If the supp_ voltage phase imbalance is more than 2%, con- I

ta_t your local electric utltdy company immediately. 1

Table 1G -- Electrical Data (COBRA TM Energy Recovery 48HJ008-014 Units with 62AQ300)

UNIT

SIZE

48HJ008

48HJ009

48HJ012

48HJ014

NOMINAL

V-PH-Hz

208_30-_60

460-3-60

208/230-_60

460-3-60

208/230-3-60

460-3-80

208/230-3-60

460-3-60

IFM CONV 62AQ POWER SUPPLY*

TYPE OUTLET FLA MCA MOCPt

NO 29,8 68,0 80

STD YES 29.8 74.0 80

NO 29.8 71,1 89

HIGH YES 29.8 77,1 80

NO 15.9 35.0 40

STD YES 15,8 37.7 40

NO 15.8 36.4 40

HIGH YES 15.8 39.1 45

NO 29,8 70.0 80

STD YES 29,8 76,0 80

NO 29.8 73,1 80

HIGH YES 29.8 79.1 80

NO 15.8 37.3 40

STD YES 15.8 40.0 45

NO 15.8 38.7 45

HIGH YES 15.8 41.4 45

NO 29.8 82.8 90

STD YES 29.8 88.8 100

NO 29.8 87.2 100

HIGH YES 29.9 93.2 100

NO 15.8 40.7 45

STD YES 15.8 43.4 50

NO 15.8 43.3 50

HIGH YES 15.8 46.0 50

NO 29.8 90.4 100

STD YES 29.8 96.4 1O0

NO 15.8 44.9 50

STD YES 15.8 47.6 66

DISCONNECT SIZE

FLA LRA

75 420

80 425

78 445

84 449

38 211

41 213

46 224

43 226

77 454

82 459

80 479

86 483

41 233

43 235

42 246

45 248

90 519

96 523

95 542

101 547

44 261

47 263

47 272

50 274

98 604

104 609

49 297

51 299

LEGEND

FLA -- Full Load Amlpss

HACR -- Heating, Air Conditioningand Refrigeration

IFM -- Indoor (Evaporator) Fan Motor

LRA -- Locked Rotor Amps

MCA -- Minimum Cimuit Amps

MOCP-- Maximum Overcurrent Protection

NEC -- National Electrical Code

UL -- Underwriters Laboratories

*The values listed in this table do not include power exhaust, See

Power Exhaust table for requirements.

lFuse or HACR breaker.

NOTES:

1. In compliance with NEC requirements for multimctor and combi-

nation load equipment (refer to NEC Articles 430 and 440)), the

overcurrent protective device for the unit shall be fuse or HACR

breaker. UL, Canada units may be fuse or circuit breaker.

2. Unbalanced 3-Phase Supply Voltage

Never operate a motor where a phase imbalance in supply volt-

age is greater than 2%, Use the following formula to determine

the percent of voltage imbalance.

= 100 x max voltage deviation from avera_levoltage

average voltage

0( us

Example: Supply voltage is 460-3-60.

A B c AB =452 v

BC =464 v

AC =455 v

Average Voltage _ 452 + 464 + 455

1371

- 457

Determine maximum deviation from average voltage.

(AB) 457 - 452 = 5 v

(SC) 464 - 457 =7 v

(AC) 457 -455 --2 v

Maximum deviation is 7 v.

Determine percent of voitage imbalance.

% Voltage Imbalance =100 x 457

= 1.53%

This amount of phase imbalance is satisfactory as it is below the

maximum allowable 2%.

IIMPORTANT: If the supply voltage phase imbalance is more than2%, contact your localelectric utility company immediately. ]

UNIT

SIZE

50PIJO0a

50HJ009

Table 1H -- Electrical Data (COBRA TM Energy Recovery 50HJ008-014 Unite with 62AQ300)

NOMINAL IFM CONy 62AQ HEATER MODEL NO.

V-PH-H2 TYp OUTLET FLA CRHEATER--A00

208'230-3=60

46O-360

208/230-3-60

460-3-60

STD

t_GH

STD

HIG_

STD

HIGH

S1D

HIGH

YES

21.9 010

011

012

012;017

017

21.9 010

011

012

0121017

017

21,9 010

011

012

012+017

21,9 010

011

012

0121017

ELECTRIC HEAT

ACtual IdN FLA

7.8/ 9.6 21.7/ 25.0

12.0/14.7 33.4/ 38.5

18.6/22.8 51,7/ 59,7

24.0/29,4 66,7/ 77,0

31.0/38,9 88.4/102,0

7.8/ 96 21,7/ 25,0

12,0/14,7 33,4/ 38,5

18¸6/22,8 51¸7/ 59,7

24,0/29,4 66,7/ 77,0

31,8/38.9 88,4/102,9

7,8/ 9,6 21,7/ 25 0

12,0/14,7 33,4/ 38.5

18,6/22,8 51,7/ 59.7

24,0/29,4 66,7/ 770

31,8138,9 88,4/102,0

--/-- --/--

7,0/ 9,6 21.7/ 25,0

12,0/14,7 33.4/ 38.5

18.6/22.8 51.7/ 59,7

24.0/29.4 66,71 77,0

31.8/38,9 88.4/102.0

0T6 12,8 16.7

21,9 013 15,2 19,8

014 25,5 33,4

015 30,3 39,7

0141016 383 502

016 !2.8 167

21,9 013 15.2 19,8

014 25.5 334

015 30.3 39.7

014+016 38.3 50,2

12,'8 16_.7

21.9 013 152 19.8

014 25,5 334

015 30,3 39,7

0t41016 38,3 50.2

91% 12.-8 16.-7

YES 21.9 013 15.2 19.8

014 25.5 33.4

015 303 397

0141016 38.3 50.2

/--

oT7 76/96 _;-_

010 12.0/14.7 32.7

NO 21.9 011 18.0/22.8

012 24.0/29.4 16,4

0121017 21.0/38.9 32.7

-- --/-- --

017 7.8/ 96 164

010 12.0/147 32.7

YES 21.9 011 18.6/22 8

012 24.0/29.4 16.4

0121017 318/38.9 32.7

017 7.8/ 9.6 21.7/ 25.0

010 12.0/14.7 33.4/ 38.5

NO 21.9 011

012

0121017

YES 21.9 010

011

012

012+017

6T6

NO 21.9 013

014

015

014+016

016

YES 21.9 013

014

015

0141016

016

NO 2t.9 013

014

015

014+016

016

YES 21.9 013

014

015

0141016

POWER SUPPLY"

MCA MOCP**

68.0/ 68.0 80/ 80

68.7/ 72.9 90/ 90

83,3/ 89,7 100/100

106,2/116,2 120/125

125,0/137,8 150/150

152.1/169,1 170/175

74.0/ 74,0 801 80

74,0/ 77,1 90/ 90

88,1/ 93,9 100/110

111,0/120,4 125/125

129,8/142,0 150/150

156,0/173,3 170/175

71,1/ 71,1 80/ 80

71,8/ 76.O 90/ 90

86,4/ 9_.8 100/110

109,6/119.3 120/125

128,1/140.9 150/150

155,2/172¸2 175/175

/7,1/ 771 80/ 8O

77,1/ 80,2 g0/t00

91.2/ 97,0 110/110

114¸I/123,5 125/150

132¸9/145,1 150/150

160,0/176,4 170/200

35,0 40

44,4 60

48.3 60

65.3 80

73.1 90

86.2 100

37,7 40

46,5 60

50,4 60

67,4 80

75,2 90

88,3 100

36,4 40

45,8 80

49,7 60

66,7 80

74,5 g0

87,6 100

39.1 45

47.9 60

51.8 60

68.8 80

76,6 90

89,7 100

70,6/ 70,0 86/ 80

70.6/ 72 9 90/ 9O

83.3/ 89,7 100/100

106¸2/116,2 120/125

125,0/137,8 150/150

152.1/169.1 175/175

76.0/ 76,0 80/ 80

76,0/ 77,1 90/ 90

88,1/ 93,9 100/_ 10

111,0/120,4 125/125

129,0/142¸0 150/150

156,9/173,3 170/175

73,1/ 73,1 80/ 80

73.1/ 76.0 90/ g0

86¸4/ 92.8 100/110

18.6/22.8 51.7/ 59.7 1093/119.3 125/125

240/29.4 66.7/ 77.0 128.1/140.9 150/!50

318/38,9 884/102,0 155,2/172.2 175/175

--I-- --/-- 791/ 79.1 80/ 80

7.0/ 9,6 21,7/ 25,0 79,1/ 80 2 90/190

12.0/14,7 33,4/ 38,5 91,2/ 970 110/110

186/22.8 517/ 59.7 114.1/123.5 120/150

240/29.4 66,7/ 77.0 132.9/145.1 150/150

318138.9 88.4/102.0 160.0/1764 175/200

-- -- 37.3 40

12.8 16.7 44.4 60

15.2 19.8 48,3 60

25.5 334 65.3 80

30 3 39.7 73.1 90

383 502 862 !00

-- -- 40.0 45

12,8 16,7 46,5 60

152 198 50.4 60

25.5 334 674 80

30.3 39.7 75.2 80

38.3 50.2 88.3 100

-- 38.7 45

12,8 16,7 45.8 60

152 19.8 49.7 60

25.5 834 66,7 80

30.3 397 745 90

38.3 50.2 876 100

-- -- 41.4 45

128 167 47.9 60

15.2 198 518 60

25.5 33.4 68.8 80

30.3 39.7 76.6 90

38.3 50.2 89.7 100

DISCONNECT SIZE

FLA LRA

70/ 75 420/420

81/ 87 420/420

102/112 420/420

120/131 420/420

140/160 420/420

80/ 80 425/425

80/ 80 426/425

87/ 92 425/425

10_116 425/425

125/136 425/425

150/165 425/425

78/ 78 445/445

70/ 78 440/445

85/ 91 440/445

106/115 440/445

123/135 440/445

140/164 445/445

84/ 84 440/449

84/ 84 440/4_9

90/ _440/449

111112O 449/449

129/140 449/449

154/169 440/449

38 211

41 211

45 211

61 211

68 211

80 211

41 213

44 213

47 213

63 213

78 213

82 213

40 223

43 224

47 224

62 224

69 224

81 224

43 225

45 226

49 226

65 226

72 226

84 226

77/ 77 454/454

81/ 87 454/454

102/112 454/454

120/131 454/454

140/160 454/454

82/ 82 450/459

87/ 9_ 459/459

108/116 459/459

126/136 459/459

150/165 450/459

80/ 80 470/479

80/ 80 I470/479

86/ 91 479/479

106/115 470/479

!23/135 470/479

140/164 470/479

80/ 86 480/483

86/ 86 483/483

90/ 96 483/483

111/120 483/483

129/140 483/483

154/169 483/483

41 233

45 233

61 233

68 283

80 233

43 235

44 235

47 235

63 235

70 235

82 236

42 245

43 246

47 246

62 246

69 246

81 246

45 247

45 248

49 248

65 248

72 248

84 248

Table 1H -- Electrical Data (COBRA TM Energy Recovery 50HJ008-014 Units with 62AQ300) (cont)

UNIT

SIZE

50HJ012

50HJ014

NOMINAL IFM CONV

V-PH-HZ TYP OUTLEt

20PJ230-3-60

460-3-60

STD

H_G_

ST[_

HIGH

200/230-3-60 STD

460-3-60 HIGH

YES

LEGEND

FLA -- Full Load A_n_o_s

HACR Heating, Air (_ondi[}oning and Refrigeration

IFM Indoor (Evaporator) Fan Motor

Lccbad RotO_A s

LRA Minimum CIm u!dn_MCA

MOCP -- M_mumOVercun'e_Pmt_ion

NEC -- National El_d_l Code

UL -- Under_rs' I_ora_ties

62AQ HEATER MODEL NO.

FLA CRHEATER--A00

21,9 010

012

012+017

012+010

010

21,9 012

012+017

012+0!0

010

21,9 012

012+017

012+010

21.9 010

012

012+0_7

012+010

219 013

015

014+016

015+013

013

21,g 0t5

014+016

01.r_,013

21.g 013

015

014+016

015+013

013

2_,9 015

014_,016

0_5+013

010

21.9 012

012+017

012+010

21,9 013

015

0t_-016

015+013

013

21,9 016

014+0_6

015+013

013

21.9 015

014"016

015+013

ELECTRIC HEAT

Actual kwh" FLA

--/-- --/--

7.81 9.6 21.7/ 25.0

12,0/14,7 33,4/ 38,5

24,0/234 66.7/ 77.0

31.8/38,9 88.4/1020

37.0/45.g 104,2/104,2

/-- /--

7.8J 9.6 2! 0/ 25.0

12.0/14 7 334/ 38.5

24,0/29,4 66,7/ 77.0

31,8/389 884/102,0

37,0/45,9 1040/120,3

--/-- --/--

7,8/ 9,6 21,7/ 250

12,0/147 33,4/ 385

24,0/;)9,4 66,7/ 77,0

31.0/38,g 88,4/102,0

37,0/459 104,2/120,3

7.8/ 9.6 21.0/ 25.0

12.0/14,7 33.4/ 38,5

24,0/294 66.7/ 77.0

31,8/389 88,4/1020

37.0/45.9 104.2/120.3

15.2 198

30.3 39.7

383 50.2

45.9 60.1

15.2 19.8

30 3 39.7

38.3 502

459 601

1_8 1_7

15.2 19.8

30.3 39.7

38.3 50.2

45.9 60.1

12_] 16:/

15.2 19.8

303 387

383 50.2

45.9 60.!

7,0/ 9.6 21,7/ 25,0

12.0/14.7 33,4/ 385

24.0/29.4 66,7/ 770

31¸8/38.9 88.4/102.0

37,5/45,9 104.2/120.3

m/-- --/--

7,8/ 9,6 21,7/ 250

12,0/14,7 33,4/ 38,5

24,0/29,4 66,7/ 77,[}

31.8/38,9 88¸4/102,[}

37.5/45,9 104.2/120,3

1_-8 1_7

15.:_ 19.8

30.3 39.7

38.3 50.2

45.9 60.1

15.2 !9.8

30*3 39.7

38.3 50.2

45.9 60.1

POWER SUPPLY* DISCONNECT 0/ZE

MCA MOCP _FLA LRA

82,0/ 82,8 90/ 90 90/ 90 519

82,8/ 82,8 90/ gO 90/ go 519

86,4/ 92.8 _.90/110 go/ 81 519

1281/140.9 150/150 123/135 519

155,2/172.2 170/17[} 140/164 519

175.0/165.0 175/200 160/185 519

88.8/ 88.8 100/100 96/ 96 523

88 8/ 8[},8 100/_00 96/ 96 523

91,2/ 970 110/11[} 90/ gO 523

t32,0/145 1 150/150 120/140 523

160,0/176,4 175/200 154/168 523

179,8/169,2 200/200 172/190 523

87,2/ 87,2 100/10(I 95/ 95 542

87,2/ 872 100/100 95/ 95 542

90,8/ 97.2 100/110 95/ 96 542

132,5/145.3 150/150 120/140 542

159.0/176.6 175/200 153/169 542

179.4/169.4 200/200 171/190 542

93.2/ 93.2 100/100 101/101 547

93,2/ 93,2 100/100 t01/101 547

95¸6/101,4 110/110 101/101 547

137,5/149,5 150/150 134/145 547

164,4/180¸8 170/200 159/174 547

184,2/178,6 200/200 177/195 547

40.7 45 44 260

45.8 60 44 261

49.7 60 47 281

66,7 80 62 261

876 100 81 261

850 110 93 261

43,4 45 47 262

47,9 60 47 263

51,8 60 49 268

688 80 65 263

88,7 100 84 263

87,1 !10 95 263

43,3 50 47 272

484 60 47 272

52,3 60 50 272

69,3 80 65 272

90,2 100 84 272

87,6 110 96 272

46,0 50 50 274

505 60 50 274

544 60 52 274

71 4 90 68 274

92,3 100 87 274

89,7 110 96 274

90,4/ 904 100/100 geJ 96 604/604

90,4/ 90.4 100/100 90/ 98 604/604

90.8/ 97_2 100/110 90/ 98 go4_04

137.5/145_3 150/150 120/1AO 604/604

159.6/_ 76,6 175/200 153/169 604/604

179¸4/169,4 200/200 171/190 604/604

96.4/ 96.4 100/100 104/104 609/609

go,o/ 96,4 100/100 104/104 609/609

95,6/101,4 110/110 104/104 600/509

137,3/149,5 150/150 134/145 609_609

164¸4/180,8 175/200 159/174 609_09

184.2/173,6 200/200 177/195 609_09

44,9 50 49 287

48,4 60 49 287

52,3 60 50 287

48,4 70 48 287

90.2 100 84 287

87.6 110 gO 287

47,6 50 51 289

50.5 60 51 289

544 60 52 289

50.5 70 51 289

92,3 1_ 87 289

89,7 110 98 289

Example: Suppry voltage is 460-3 60.

ABC AB = 452 v

BC=464v

AC=455V

A',l_raga Voltage = 452+464÷455

1371

457

*The values listed in this table do not include power exhaust+ See Power Exhaust raise for

requirements,

theater capacity (kW) is based on heater vott_ge of 240v or 480v, If power d_stribution

voltage _o unHvaries from rated, heate¢ kW will vary a_cordingly,

"*Fuse or HACR breaker.

NOTES:

1. In compliance with NEC requirements Ior mu_tirno_orand combination load equipment

refer to NEC Articles 430 and 440), Iha ovemurrent p rotectlve device for the unit shall

be fus_ or HACR breaker, UL, Canada un ts may be fuse or circuit breaker,

2 U nbnlanCed 3-Phase Supply Voltage

Nev_r operate a motor whe_ a l>hase imbalance in suupp_ vottage is gm0ier than 2%.

Usa the following formula to dele_mine the percent of voyage imbalance,

- 1O0x max voltage deviation 1tom a'_sra_le voltage

average _ltage

Determine maximum deviation from average voltage.

AB) 457 - 452 _5 v

BC 464-457 = 7 v

Max_morn bavia_ion is 7v,

D_terrrdr_ percen_ of vo_tag_ lrnba_anc_

%VoHage_mt_ance _100x 4_7

I_i_ _m_unt _f phase _rn_a_ce _ _lt_lo Was _ _ I_w _he rnaxirilum al_ab_a

2%.

I loMcPalOeleRTAiN_u_i_it_:o_l_lnY imVO_l_n_edgeiaPteth_imbal_r._s i..... than 2%. contact your 1

INDOOR AIR QUALITY AND CO2 SENSORS -- If a space

CO2 sensor is desired, a field-installed 25% outdoor-air damper

must be used for proper Demand Control Ventilation (DCV)

operation. If not, the 62AQ Energy$Recycler unit outdoor-ak

dampers will remain shut unless the space CO2 levels are

above the CO2 set point.

The 25% outdoor-air damper should be placed in the nor-

mal location on the base rooftop unit. See Fig. 24. This damper

will allow additional outdoor air to be brought in if the CO2

level is high, independent of 62AQ unit operation. In the

occupied mode, the 62AQ unit will usually bring in enough

fresh air to maintain CO2 levels below the set point. If not, the

25% outdoor-air damper will open to allow additional fresh air

to be brought in. See Fig. 25 and 26 for control wiring. The rec-

ommended CO2 sensor is a 33ZCSENCO2 and the recom-

mended 25% outdoor-air damper is a CRTWOPOSOOIA01 or

a CRTWOPOS002A01 (dependent on rooftop unit size). See

33ZCSENC02 or 25% outdoor-air damper installation instruc-

tions for additional information.

Step 9 -- Assemble and Mount Supply-Air

Hood -- The hood kit supplied with the 62AQ

Energy$Recycler TM section is needed to complete this installa-

tion. See Fig. 27. The Energy$Recycler section supply air

hood installs around its motorized damper inlet.

NOTE: Mount the hood sides to the Energy$Recycler sec-

tion first, and then the hoed top for easier installation. The ]

thermostats are shipped factory-wired and taped behind the [

damper blade of the Energy$Recycler section. Knobs and

screws are in hood package.

1. Assemble aod mount supply air hood as shown in Fig. 27.

2. Discard the tape that holds the thermostats behind the

damper plates. Mount thermostats to the hood sides of the

energy recovery section unit into the holes provided, with

thermostat terminals facing up. See Fig. 27. Mount

outside cooling set point thermostat part number

HH22HA060 (white label) on the left side of the hood.

See Fig. 27.

3. Mount the outside heating thermostat part number

HH22HA065 (red label) on the right side of the hood. See

Fig. 27.

4. From the outside of the unit's side panels fasten the

thermostat(s) with two mounting screws, with the quick

connect terminals face up. See Fig. 27.

5. Install thermostat knobs (provided in kit). See Fig. 27.

6. Set supply air unant__ (on units with optional factory÷

installed supply air fan [GA] or field-installed accessory

supply air fan kit [CRFANKIT001-006A00]). Select the

fan speed and damper position to obtain desired cfm.

Relocate damper stops to the desired position on the

damper support rail and adjust the fan speed by relocating

the wire on the supply fan motor terminal block. Factory

set position is 45 degrees for the damper position, and

medium speed for the motor. Relocate stops to top hole

for 30 degrees, bottom hole for 60 degrees, and remove

stops for 90 degrees (see Fig. 27).

7. Install the aluminum filter screen and end cap with

screws along the top, as shown in Fig. 27.

Step 10 -- Mount the Barometric Relief

Damper -- The hood kit supplied with the energy recovery

section is needed to complete this installation. The exhaust air

hood (that includes the barometric relief damper) must be

assembled and installed on the energy recovery section per the

instructions below. See Fig. 28.

1. lustall the barometric relief damper onto the

energy recovery section by mounting the hinge with

2 screws then sliding in the hinge pin. See Fig. 28.

2. Install damper limiter for 30, 45, or 60 degree angles,

Limiter pin not required for 90-degree setting (set to the

desired position based on cfm requirements and fan

speed). See Fig. 28. Fan speed is adjusted by relocating

wires on fan terminal blocks.

3. Loosen compressor bolts and remove shipping blocks

from under compressor on the 62AQ060 and 62AQ100

sizes only.

4. Install exhaust hood.

5. Install wire guard as shown in Fig. 28.

Never operate the unit without the wire guard in place.

OUTSIDE

AiR

EXHAUST

AIR

OPTIONAL

HUMIDI-MIZER COIL

OPTIONAL 25% EVAPORATOR

OA DAMPER

62AQ ENERGYSRECYCLERrmsECTION

_F MIXED AIR

__l ROO UNE t

RETURN AIR

ROOFTOP UNIT (RTU)

DOMPRESOOR,

SUPPLY AIR E

Fig. 24 -- 25% Outdoor Air Damper Location

COMPRESSOR 2

THER MIDISTATTM/

HUMIDSTAT

-- m

7c_-_

6 :=-9

5Dc_-_

2 _- 9

33ZCSENC02

,,I--@

-- - 24v POWe_

(Alarm Relay

Contact)

LEGEND

Field-Provided Wires

---_

I Comntel_ 181

I ThermldlStal

82.AQ CONNECTION

BOARD

_ qGRA--

--YEL--

--" _ --YEL-

_--VIO--

T STAT --WHT--

_ --WriT--

ICOM I

i I I

II I

II ,

TTT_m I

F¥o-_,-_,_T,-T;T,-, ,- " ,-¥,7¥,,

CRTWOPOSO01A01 or C_Ol_OSgO_Ji02

TWO POSITION DAMPER PLUG

NOTES:

1. R1 is a2-pole,normallyopenrelay(recommendedrelay:HN61KK040),

2. ThespaceCO=levelandset pointcan be readandchangedlocally,

Fig, 25 -- CO2 Sensor Wiring with Electro-Mechanical Controls

8C31 -_

7[_-_

6l::::] -_

4_¢o__

3=-_

1=_@

33ZCSENCO2

QSIG COM

(_ 4-20 mA

J ®..... ,ll-_

--_ 1 TS-=

I(base unit

2I=o.trctboz_

--_31

--(I) 41

--_51

--_61

--_7t

--_81

-- 24v Po_r

(Alarm R1

Relay

Contact)

24v powlr--_-_ [-_--

62AQ CONNECTION

BOARD

YEL--

"-- _YEL-

T STAir --WHT_

Wl_2_-WH_

I i

III I

F¥.-_;.,.,_y,-y_-y_-y,-y,-1.,-y_-.,.,;,r,7

LEGEND

Field-Provided Wires

NOTES:

1. R1 is a2-pole normally open relay recommended relay: HN61KK040.

2. The space CO_ level can be read on the Carrier Comfort Network_ system; set pont must be changed ocally.

Fig. 26 -- CO2 Sensor Wiring with Factory-Installed PremierLink TM Direct Digital Control (DDC)

- HOOD TOP DAMPER BLADE STOP

-- KNOB IN 45 _POSITION

SCREWS {2)

SIDE

END CAP

COOLING SET POINT

THERMOSTAT (WHITE LABEL)

TEMPERATURE SWITCH

SHIPPED WITH UNrr /

ALUMINUM FILTER SCREEN J

LTLO

MOUNTING

BRACKET

TEMPERATURE

COOLING

LOCKOUT (LTLO)

(2)

Fig. 27 -- Energy Recovery Section Supply-Air Hood Assembly

RELJEF CAMPER

HOOC SIDE

30°LOCATION

DAMPER LIMITER

Fig, 28 -- Energy Recovery Section Barometric Exhaust Air Hood Assembly

Step 11 -- Set the Outdoor Cooling and Heat-

ing Thermostats

IMPORTANT: The 62AQ Energy$Recycler TM section is

shipped with an outdoor thermostat set at 55 F which locks

out mechanical cooling on the rooftop section and the

Energy$Recycler section compressor. If this feature is not

desirable, the rooftop unit's compressor can be allowed to

run by relocating both gray wires to the same side of the low

temperature lockout thermostat (LTLO) leaving the white

wire on the opposite pole, locking out only the

Energy$Recycler section compressor. The LTLO is also

accessible by removing the filter access panel and the door

of the damper mounting bracket.

COOLING -- During the unoccupied period, the economizer

mode of operation is used as the first stage of cooling. When

the outside air temperature is below the cooling thermostat set

point, the outside air will be used for first stage cooling.

HEATING The heating thermostat should be adjusted to the

second stage balance point (heat output of the energy recovery

section plus the heat output of the ftrst stage on rooflop unit

equals building load at this temperature). Above this setting,

first stage heating will be the energy recovery section unit and

second stage will be the ftrst stage of the rooftop unit. Below

this point, first stage heating will be the Energy$Recycler

section plus first stage heating of the rooftop unit. The second

stage will be the second stage of the rooftop unit.

LIGHT COMMERCIAL

THERMIDISTAT TM ACCESSORY

General--A light commercial Thermidistat accessory

(part number TSTATCCPLH01-B) or PremierLink TM control-

ler with humidistat is required for field installation for each unit

to control the Energy$Recycler section. See Fig. 29.

The light commercial Thermidistat is a 7-day programma-

ble, wall-mounted, low-voltage control that combines tempera-

ture and humidity control in a single unit. It provides separate

set points for heating and cooling, and adds dehumidification

with separate set points for occupied and unoccupied periods.

Different heating and cooling set points and times are

programmable for up to 4 periods per day and 7 days per week.

The dehumidification output provides direct control of the

EoergySReeycler section, rooftop section fans, and the rooftop

section compressor in response to the programmed time sched-

ules and temperature settings. During power loss an internal

memory stores programs and settings for unlimited time, and

the clock continues to run for at least 8 hours. Batteries are not

used.

Power- Note that this control does not require batteries

and is not "power stealing." It does require 24 vac (R and C

terminals) from the rooftop section's low-voltage transformer

to be connected to it for proper operation. The control will not

operate without these 2 connections. See Fig. 30.

Dehumidification Equipment and Connec-

tions -- The dehumidification output terminals on the light

commercial Thermidistat device must be connected to the

dehumidify input terminals on the Energy$Recycler section.

Additionally, if the rooflop section is equipped with the optional

Humidi-MiZer TM dehumidification accessory, a relay in the

Energy$Recycler section energizes the Humidi-MiZer solenoid

to activate the enhanced dehumidification mode.

Step I -- Select Light Commercial Thermidistat

Location -- The light commercial Thermidistat should be

mounted:

• Approximately 5 ft (I.5 m) from floor.

•Close to or in afrequently used room, preferably on an

inside partitioning wall.

• On a sectinn of wall without pipes or ductwork.

The light commercial Thermidistat device should NOT be

motmted:

• Close to a window, on an outside wall, or next to a door

leading to the outside.

• Exposed to direct light and heat from a lamp, sun, fire-

place, or other temperature-radiating object that may

cause a false reading.

• Close to or in direct airflow from supply registers and

return-air registers.

• In areas with poor air circulation, such as behind a door

or in an alcove.

HEIGHT (in.) I WIDTH (in.) I DEPTH (in.)

41/4 I 71/2 J 13/8

Fig. 29 -- Light Commercial

Thermidistat Accessory

_R HUMIOI-MIZE_ ANt)

M_ISTU RF/_IIE_ UP&IT5C_Ly

I• ...... I r BA_r_NJT

I I I C0NN[( TI0_

i _ - ....

I IC0NN[_;IOM

I _ Y[L

P_K

I U,,I

L- _ _LU

L ....

OPTIONAL

HUMIDISTAT

(HL38MG029)

Fig. 30 -- Light Commercial Thermidistat

Accessory Low-Voltage Connections

Step 2 -- Set DIP Switches -- There is a4-sectinn

DIP (Dual In-line Package) switch within the light commercial

Thermidistaff udevice which must be properly set by the in-

staller. It is easiest to set these 4 switches before the light com-

mercial Thermidistat device is mounted to the wall, so com-

plete the following steps first:

1. aport hinged light commercial Thermidistat cover.

2. Remove cover completely by gently snapping it apart at

the hinge.

3. Switches are located in upper right comer of circuit

board. To change switch position, use corner of a small

screwdriver to slide switch to opposite position.

4. After switches have been set, do not reassemble the

2 halves. The rear plastic will be first mounted to wall.

SWITCH 1 -- Not used

SWITCH 2 -- Not used

SWITCH 3 -- SMART/CONVENTIONAL RECOVERY --

Switch 3 selects between conventional or smart recovery from

setback. Conventional recovery changes to new set point at

preprogrammed time. Smart recovery, which is active in both

heating and cooling, starts selected cycle 90 minutes earlier

and smoothly adjusts set point so room will arrive at pro-

rammed temperature at programmed time.

NOTE: The occupied output is only energized at the prepro-

grammed time.

To Set:

OFF for smart recovery. This is factory default.

ON for conventional recovery.

SWITCH 4-- INSTALLER TEST OFF/ON-- Switch 4 selects

a special installer test mode that assists with checkout and trouble-

shooting. See Step 5 -- Conduct Light Commercial Thermidistat

Start-Up and Checkout.

To Set:

OFF for normal operation. (Factory default setting.)

ON for Installer Test mode.

Step 3 -- Install Light Commercial Thermidistat

Device

Before installing light commercial Thermidistat device,

turn off all power to COBRA TM energy recovery units.

There may be more than one power disconnect. Electrical

shock can cause personal injury or death. Install lockout

tags on disconnects.

l. Turn offall power to equipment. Tag discounect.

2. If an existing thermustat is being replaced:

a. Remove existing thermostat from wall.

b. Disconnect wires from existing thermostat, one at

a time.

c. As each wire is disconnected, record wire color

and terminal marking.

d. New or additional wire may be needed to accommo-

date added humidity outputs transformer common.

e. Discard or recycle old thermostat.

properly.

3. Route Wires through large hole in rear plastic. Level rear

plastic (separated from front plastic in Step 2 Set DIP

Switches, on this page). Level rear plastic against wall

(for aesthetic value only -- light commercial Thermidi-

stat device does not need to be leveled for proper

operation) and mark wall through 2 mounting holes.

4. Drill two 3/16-in.mounting holes in wall where marked.

5. Secure rear plastic to wall with 2 screws and anchors

provided. Additional mounting holes are available for

more secure mounting if needed. Make sure all wires

extend through hole in mounting base.

6. Adjust length and routing of each ware to reach proper

connector block and terminal on mounting base with

t/4-in, extra length. Strip only I/n in. of insulation from

each wire to prevent adjacent wires from shorting togeth-

er when connected.

7. Match and connect equipment wires to proper terminals

of each connector block. Remember R and C must be

connected for proper operation (see Fig. 30).

Improper wiring or installation may damage light commer-

cial Thermidistat device. Check to make sure wiring is

correct before proceeding with installation or turning on

power. Refer to wiring schematic in the Troubleshooting

section of this manual

8. Push any excess wire into wall and against rear plastic.

Seal hole in wall to prevent air leaks. Leaks can affect

operation.

9. Reattaeh light commercial Thermidistat body to mount-

ing base by first reattaching hinge.

10. Close light commercial Thermidistat assembly, making

sure pins on back of circuit board align with sockets in

connector.

11. Turn on power to equipment.

On power up, all display segments will light far 2 seconds.

For the next 8 seconds, a 2-digit code appears on LED display

that identifies light commercial Thermidistat configuration:

CP -- Commercial Product

Step 4 -- Set Light Commercial Thermidistat

Configuration (Fig. 31 and 32) -- Configuration op-

tions, like DIP switch settings, are intended to be selected at

installation and normally are not modified by the owner. These

options must be made as part of the installation. A special

procedure allows entry into the Configuration mode. While in

configuration mode, up to 10 selections can be made. A

description of each selection and how to use the Configuration

mode are as follows:

CONFIGURATION OPTIONS -- SUMMARY

Option 1-- Anticipator adjustment

Option 2 -- Clean filter timer adjustment

Option 3 -- English/Metric selection

Option 4 Fan (G) ON with W selection

Option 9 -- Holiday heat set point

Option 10 -- Holiday cool set point

Option 11-- Holiday humidity set point

Option 13 -- Room temperature offset adjustment

Option 14 -- Heat cool deadband adjustment

Option 21 -- Keyboard lock

TO ENTER CONFIGURATION MODE -- Press and hold

FAN button for approximately 10 seconds until COOL set

point display indicates a flashing "01". The light commercial

Thermidistat device is now in Configuration mode. It will

automatically exit this mode if no button is pressed for 3 min-

utes. Pressing HOLD End button will exit the Configuration

mode immediately.

[] [] []

COPY PREVIOUS PROGRAM MODE

DAY [] [] []

CHANGE DAY HUMIDITY FAN

SET TIME/TEMP HOLIDAY HOLD

End

©uP

DOWN

Fig. 31 -- Light Commercial Thermidistat TM Keypad

Mode HOLDHOLIDAY Gel UN1 OC2 UN2

OFF DEHUM OO Mo Tu We Th

HEAT i_1 Fr Sa Su

COOL BB _>COOL IT]M E AB P8

AUTO BB B:

Fan D HEAT

CLEAN FILTER

ON** pROGRAMMING

AUTO

Fig. 32 -- Light Commercial Thermidistat LCD

on Power Up

WHILE IN CONFIGURATION MODE -- The upper small

(COOL set point) display indicates selected option number and

large display indicates selection made within that option. One of

these will be flashing. The up and down set point buttons are

used, both to move between available options and to make

selection for each option. When option number (small display)

is flashing, the up and down set point buttons allows for scroll-

ing through options moving between available option numbers.

After desired option number has been selected, press SET

TIME.q_MP button once. The large display will now flash,

indicating that up and down set point buttons now control avail-

able choices within that option. Each press of SET TIME!

TEMP button switches between available option (small display)

and available selections within each option (large display).

Option 1 -- Anticipator Adjustment -- This adjustment

controls sensitivity and cycle rate of light commercial Thermi-

distat device. Higher numbers decrease sensitivity and slow

cycle rate. Lower numbers increase sensitivity and cycle rate.

Anticipator values can range from 1 to 9. Factory default is 3.

This default selection provides optimum performance in nearly

all installations. Try it first; do not change setting unless there is

evidence of need to do so.

Unlike conventional anticipators, this setting is not deter-

mined by current draw. There is no need to measure, know, or

compensate for current draw. There is also no droop with this

light commercial Thermidistat device. Regardless of setting

and number of stages, both heating and cooling will control to

their respective set points.

TO ADJUST:

I. Enter Configuration mode. The upper small (COOL set

point) display will be flashing 01. If not, use up and down

set point buttons to move it to 01.

2. Press SET TIME/TEMP button once to flash current

selection of 1, 2, 3, 4, 5, 6, 7, 8, or 9 on large display.

Factory default is 3.

3. Use up and down set point buttons to move to desired

anticipator setting.

4. Press SET TIME!'I_MP button again to flash small

upper display for selection of another option, or press

HOLD End to exit Configuration mode.

Option 2 -- Clean Filter Timer -- Select hours of blower

operation (heating, cooling, or fan) before CLEAN FILTER

icon is displayed. With OFF selected, icon will never come on,

disabling this feature. Time selection can range from 400 to

3600 blower operation hours by selecting numbers 1through 9.

(Time is 400 times number selected.) Factory default is 2

(800 hr). Recommended blower operation hours selections are:

disposable filter -- 400 to 800 hr; media filter 1200 to

1600 hr; electronic air cleaner-- 1600 to 2400 hr.

TO SELECT OR ADJUST:

I. Enter Configttration mode. Use up and down set point

buttons to make small display (now flashing) indicate 02.

2. Press SET TIME/TEMP button once to display current

selection of 1, 2, 3, 4, 5, 6, 7, 8, or 9 on large display.

Factory default is 2.

3. Use up and down set point buttons to move between

available choices.

4. Press SET TIME/TEMP button again to flash small

upper display for selection of another option, or press

HOLD End to exit Configuration mode.

Option 3 English/Metric -- Select between Fahrenheit

and Celsius operation. Factory default is Fahrenheit.

TO SELECT OR ADJUST:

1. Enter Configuration mode. Use up and down set point

buttons to make small display (now flashing) indicate 03.

2. Press SET TIMEffEMP button once to flash current se-

lection off or C. Factory default is E

3. Use up and down set point buttons to move between F

and C on large display.

4. Press SET TIME/TEMP button again to flash small up-

per display for selection of another option, or press

HOLD End to exit Configuration mode.

Option 4 -- Fan (G) On With W -- This selection deter-

mines whether fan (G) output is to be ON or OFF when any W

(furnace or strip heat) output is ON. Most furnaces and fan

coils manage their own blowers and do not require separate G

signal. For these applications, select OFF. Some auxiliary heat-

ers require separate G signal to turn on blower. In this case,

select ON. Factory default is OFF.

TO SELECT:

I. Enter Configuration mode. Use up and down set point

buttons to make small display (now flashing) indicate 04.

2. Press SET TIME/TEMP button once to flash large

display.

3. Use up or down set point buttons to alternate between

OFF and ON on large display.

4. Press SET TIME/TEMP button again to flash small

upper display for selection of another option, or press

HOLD End to exit Configuration mode.

Option9-- Holid_ayHea_SetPoint-- Thisselectiondeter-

minestheheatingsetpoint(40to90minusdeadbandF)when

theHOLIDAYfunctionisactive.

TOSELECT:

I. EnterConfigurationmode.Useupanddownbuttonsto

makesmalldisplay(nowflashing)indicate09.

2. PressSETTIME/TEMPbuttononcetoflashlargedisplay.

3. Useupordownsetpointbuttonsto selectdesired

temperature.

4. PressSETTIMEFfEMPbuttonagainto flashsmall

upperdisplayforselectionofanotheroption,orpress

HOLDEndtoexitConfigurationmode.

Option 10 -- Holiday Cool Set Point -- This selection deter-

mines the cooling set point (40 to 90 minus deodbaod F) when

the HOLIDAY function is active.

TO SELECT:

1. Enter Configuration mode if not already there. Use up

and down set point buttons to make small display (now

flashing) indicate 10.

2. Press SET TIME!TEMP button once to flash large display.

3. Use up or down set point buttons to select desired

temperature.

4. Press SET TIMEffEMP button again to flash small up-

per display for selection of another option, or press

HOLD End to exit Configuration mode.

Option 11 -- Holiday Humidity Set Point -- This selection

determines the humidity set point (50 to 90% rh [relative

humidity]) when the HOLIDAY function is active.

NOTE: This value can only be changed in the installer soft-

ware Configuration mode.

TO SELECT:

I. Enter Configuration mode. Use up and down set point

buttons to make small display (now flashing) indicate 11.

2. Press SET TIMEffEMP button once to fiash large display.

3. Use up or down buttons to select desired humidity.

4. Press SET TIME/TEMP button again to flash small

upper display for selection of another option, or press

HOLD End to exit Configuration mode.

Option 13- Room Temperature Offset Adjust -- This op-

tion allows calibration (or deliberate miscalibration) of room

temperature sensor. There are various reasons why building

owners may want to have displayed temperature adjusted to a

higher or lower value. The selected number is number of

degrees, plus or minus, which will be added to actual

temperature. The numbers can range between -5 and +5.

Factory default is 0. This adjusted value will be used as actual

temperature for both display and con_ol action. For example, if

2 is selected, 72 F actual will read 74 F. lfset point is 72 F, the

room will control to an actual temperature of 70 F which will

be displayed and acted upon as if it were 72 E The effect is that

a positive number selection will make the room temperature

lower and vice versa. The light commercial Thermidistat

device is calibrated within an accuracy of± 1o F when shipped

fix_m the factory, so this adjustment will provide the best

accuracy when set to 0.

TO SELECT:

1. Enter Configuration mode. Use up and down set point

buttons to make small display (now flashing) indicate 13.

2. Press SET T1ME/TEMP button once to flash large display.

3. Use up or down set point buttons to move between 3,

_., -3, -2, 1, 0, 1, 2, 3, 4, or 5 on large display. Factory

default is 0.

4. Press SET T1MEFI'EMP button again to flash small

upper display for selection of another option, or press

HOLD End to exit Configuration mode.

OPtion 14 -- Heat/Cool Deac!lpand Adjustment -- This op-

tion selects the minimum difference between heating and cool-

ing set points. A larger difference saves energy and a smaller

difference decreases temperature difference between heating

and cooling. Factory default is 2, which means cooling set

point must be a minimum of 2 degrees above heating set point.

An attempt to move them closer will result in one "pushing"

the other to maintain the required difference.

Depending on set points, moving deadband closer than

2 degrees may result in regular cycling between heat and cool

when AUTO mode is selected. However, this cycling cannot

occur more often than 1 transition every 10 minutes. The sys-

tem has a built-in requirement that it cannot switch between

heat and cool without a 10-miunte "off' time between the 2

operations. Specifically, to switch from one mode to the other,

there must be no demand for the old mode and a demand for

the new mode, and this must exist continually for 10 minutes

before transition to the new mode will occur.

TO SELECT:

1. Enter Configuration mode if not already there. Use up

and down set point buttons to make small display (now

flashing) indicate 14.

2. Press SET TIMEFIEMP button once to flash large

display.

3. Useupordownsetpointbottonstomovebetween0, 1,2,

3, 4, 5, or 6 on large display. Faetory default is 2.

4. Press SET T1ME/TEMP button again to flash small

upper display for selection of another option, or press

HOLD End to exit Configuration mode.

Option 21 -- Keyboard Lock This option allows the

installer to disable the thermostat from being changed.

TO SELECT:

1. Enter Configuration mode. Use up and down set point

buttons to make small display (now flashing) indicate 21.

2. Press SET TIME/TEMP button once to flash large

display.

3. Use up and down set point buttons to move between OF

and ON on large display. Factory default is OF, keyboard

is active.

NOTE: Once the keyboard is locked the building manag-

er can momentarily unlock the keyboard by pressing the

following keys sequentially, MODE, COPY PREVIOUS

DAY, SET TIME/TEMP, and HOLD End. The sequence

must be completed within a 5-second period, and the

keypad will be unlocked. The keypad will return to lock

once the keypad is idle for a 2-minute period or immedi-

ately if aller exiting the Configuration mode.

Press SET TIME/TEMP button again to flash upper

small display for selection of another option, or press

HOLD End to exit Configuration mode.

Step 5 -- Conduct Light Commercial Thermi-

distat Start-Up and Checkout -- The light commer-

cial Thermidistat device is designed with a built-in installer test

capability. It allows easy operation of equipment without

delays or set point adjustments to force heating or cooling. To

enable Installer Test mode, move DIP switch no. 4 to ON posi-

tion. To access this switch, open case as described in Step 2 --

Set DIP Switches. Use the tip of a small screwdriver to slide

switch no. 4 to ON position.

WhileinInstallerTestmode,clockwilldisplay"lnSt,"FAN

buttonwillcontrolfan,andMODEbuttonwillcontrolheating

andcooling.

TOTESTFAN:

NOTE:In theInstallerTestmodethefenoperation is not

dependent on the occupied signal.

Fan button switches FAN icon between AUTO and ON.

While ON is displayed, G output will be on, turning fan on.

Allow up to 10 seconds after button is pressed for fen to tau'non

and off. On 3 through 121/2 ton energy recovery units, the fan

continues to operate for a minimum of 30 seconds after G

signal is removed.

NOTE: In other than the Installer Test mode the fan will run

continuously during the occupied periods. If auto fan is

selected, the fan will come on with a heating or cooling call

during the unoccupied periods and run continuously during the

occupied periods. The fan icon AUTO will be lit if auto fan is

selected and ON will be lit when the fan is on.

TO TEST COOLING AND DEHUMIDIFICATION:

Press MODE button until COOL icon toms on. YI cooling

begins within 10 seconds and remains on for 4 minutes. Two

minutes after Y1 comes on, the Y2 signal is energized for

2 minutes. At the end of 4-minute ran, cooling stops and

MODE reverts to OFF. At any time during 4-minute run time,

cooling may be turned off by pressing MODE button until

OFF appears. While cooling is on, successive presses of

HUMIDITY button turns the dehumidify output on and off.

While this output is active, the "DFMUM" icon will be

energized.

TO TEST PRIMARY HEATING:

Press MODE button until HEAT icon toms on. WI heating

begins within I0 seconds and remains on for 4 minutes. This

is the Recycling mode. If the outdoor temperature is below the

balance point it will also include first stage furnace or electric

heat in AC system. W1 will be on for 2 minutes followed by

second stage W2 for 2 minutes. If the outdoor temperature is

above the balance point, this second stage call will energize

first stage furnace or electric heat in AC system. If the outdoor

temperature is below the balance point, this second stage call

will energize second stage furnace or electric heat in AC

system. At the end of 4-minute ran, heating stops, and MODE

reverts back to OFF. At any time during 4-minute run time,

heating may be turned off by pressing MODE button until

OFF appears. While heating is on, successive presses of

HUMIDITY button turn Occupied output on and off. While

this output is active, "OC" appears in cool set point display.

Step 6 pMake Final Settings -- Be sure to return

DIP switch no. 4 back to OFF position to exit Installer Test

mode. Assuming the system is to be left in operation after

installation is complete, use MODE button to select between

HEAT, COOL, or AUTO to provide desired operation of heat-

ing, cooling, or both.

The default set points and programmed schedule are

(ONLY ONE PERIOD 1S PROGRAMMED):

OCCUPIED 1 -OCCUPIED 2 - 7:00 AM;

COOL = 76 F; HEAT - 72 F

DISPLAY WILL READ OC2

UNOCCUPIED 1 _ UNOCCUPIED 2 = 5:00 PM;

COOL -85 F; HEAT = 65 F

DISPLAY "WILL READ UN2

Ifprugrammed schedule is to be used, make sure the HOLD

icon is off. The schedule is energized or deenergiTaxl by push-

ing the HOLD End button.

If fixed temperatures are desired, push HOLD End button to

turn on HOLD icon. This will maintain set points, not allowing

them to change with pregrammed schedule.

During unoccupied periods the FAN button may be used to

select between AUTO (fan on only with equipment) and FAN

(fan on continuously) fen modes. During occupied periods the

fan is on continuously.

DEHUMIDIFICATION--Dehumidification is done only

during cooling. A dehumidification set point is available to the

owner in both occupied and unoccupied times. It can range from

50 to 90% relative humidity. When actual humidity is higher

then set point, a dehumidification demand exists. In the occu-

pied period, the light commercial Thermidistat TM device

responds by activating its dehumidify output (DEHUM) turning

on the compres.sor in the energy recovery section; and when

a call for cooling exists, energizing the Humidi-MiZer TM

solenoid in the 48/50HJ unit (if so equipped). The 62AQ

Energy$Recycler TM compressor will be started in the Occupied

mode even though a call for cooling does not exist; thus dehu-

midifying the outside air before it enters the building. In the

unoccupied period the humidistat will only energize the

Humidi-MiZer solenoid in the main unit.

However, if the humidity is below the set point in the

unoccupied period, a "mini" economizer mode will be initiated,

bringing in outside air to cool the space as the first stage

of cooling, provided the outdoor air thermostat in the energy

recovery section is below its set point.

HOLIDAY -- A holiday selection is available specifically for

times where the building will not be occupied for an extended

period. For convenience, one button selects Holiday mode

which is indicated by "HOLIDAY" icon on LED display. Holi-

day mode also has an automatic hold, meaning that set points

are not affected by the programmed schedule. While in Holi-

day mode, the system provides temperature and humidity pro-

tection for the building in all seasons, but not comfort.

Holiday Set Points -- The settings for HEAT, COOL, and

DEHUM should have been done in the Configuration mode

(Options 9,10, and 1I).

OPERATIONAL INFORMATION

There are two different controls available: a light commercial

Thermidistat device or a Humidstat in conjunction with a temper-

ature sensor,

The light commercial Thcmlidistat device is a 7-day pro-

grammable, wall mounted, low voltage field-instaned control.

It combines temperature and humidity control in a single unit

and provides separate set points fur heating and cooling. The

control adds a dehumidification control function with separate

set points for up to 2occupied and unoccupied periods per day.

Different heating and cooling set points and times are pro-

grammable for up to 4 periods per day 7 days per week. In case

of a power loss an internal memory stores programs and set-

tings for unlimited time, and the dock continues to run for at

least 8 hours. Batteries are not used.

The light commercial Thermidistat device (or Humidistat

and temperature sensor) provides direct control of the energy

recovery section, rooftop unit fans, and rooftop unit compressor

in response to the programmed time schedules and temperature

settings. The dehumidification output signal controls the energy

recovery compressor to cool and dehumidify the supply air via

a relay.

Typical unit airflow is shown in Fig. 33. See Table 2A end

2B for operating information and system response.

Unoccupied Cooling Mode -- During unoccupied

periods the system fans and compressionwill cyclein response

to the light commercial Thermidistat device's (or Humidistat

and temperature sensor) temperature and humidity output sig-

nals to maintain space conditions at programmed set points.

During mild weather, if the outdoor temperature is below the

outside-air thermostat (OAT) set point, all compressor opera-

tion is locked off and the s_,stem operates in the economizer

mode to provide flee cooling.

If outdoor air is unsuitable (humidity or air quality), then the

Energy$Recycler TM section will be off. If outdoor air is suit-

able, then both the EnergySRecycler section and the rooftop

section will be used for cooling. First stage of cooling is the

Energy$Recycler section in economizer mode. Second stage

of cooling energizes the Energy$Recycler and rooftop

compressors.

Occupied Cooling Mode -- During occupied periods,

the Energy$Recycler fans and the rooftop unit's fans run con-

tinuously to maintain proper airflow and ventilation rotes. The

compressors in the Energy$Recycler section and the rooftop

unit cycle in response to the dehumidification and thermostat

output signals from the control to maintain proper tempemtore

and humidity levels.

Cooling Operation with the Humidi-MiZer TM

Option (Units after October 2004) -- Units equipped

with the Humidi-MiZer dehumidification option are capable of

increased humidity control by utilizing a common subcooling/

reheat dehumidification coil. This unique and innovative design

provides the capability of the rooftop section to operate in both a

subeooling mode and a hot gas reheat (HGRH) mode. A

48/50HJ rooftop unit equipped with the Humidi-MiZer system

can be used with or without a 62AQ EnergySRecycler TM unit.

See the Humidi-MiZer Application Data manual for additional

details.

The incorporation of the Humidi-MiZer adaptive dehumid-

ification system on a COBRA TM unit adds significant flexibili-

ty to the overall system. The response of the Humidi-MiZer

system to varying space conditions is extremely dynamic. The

COBRA energy recovery unit or 48/50HJ rooftop unit

equipped with the Humidi-MiZer system will respond based

on the temperature and humidity requirements as sensed in

the space. Either a Carrier Thermidistat TM device (combined

temperature and humidity sensing capability) or separate

thermostat and humidistat can be used with the Httmidi-MiZer

system. See Tables 3A and 3B for sequence of operation of

COBRA units equipped with the Humidi-MiZer dehumidifica-

tion option.

Healing with H_midi-MiZer in Unoccunied Mode -- In the

unoccupied mode, the Energy$Recycler (E$R) unit is off and

all compressors are locked off. First stage heat is rooftop sec-

tion heat at 50%. Second stage heat is rooftop unit heat at

100%. See Table 3A.

Headng with Humidi-MiZer in Occunied Mode -- In the oc-

cupied mode, when the ESR compressor runs in heat mode, it .

extracts heat from the exhaust air and rejects heat to the incom-

ing outdoor air, returning energy to the building that, otherwise,

would be wasted. The E$R and rooftop section fans run contin-

uously. Rooftop section compressors are always off.

On a first stage call, the ESR compressor is on in heat mode.

If the outdoor air is above the set point, rooftop section heat is

off. Rooftop section beat is on at 50°/0 iftbe outdoor air is be-

low the set point. On a second stage call, the E$R compressor

is on in heat mode. Rooftop section heat is on at 50% if the out-

door air is above the set point. Rooftop section heat is on at

100% if the outdoor air is below the set point. See Table 3B.

NOTE: If there is a thermostat call from the space for heating,

all dehumidification (both subeooling mode and hot gas reheat

mode) will not operate.

MOISTUREMI$ER TM OPTION (Units prior to October

2004) -- Units equipped with the MoistureMiSer dehumidifi-

cation option have an up to 40% increase in latent capacity in

hot, humid climates. The MoistureMi$er dehumidification

option increases humidity control and comfort in the occupied

space by automatically lowering the evaporator coil tempera-

tore to optimum dehumidification levels while simultaneously

reheating the leaving air to prevent overcooling. The

MoistureMi$er capabilities have been incorporated into the

Humidi-MiZer system; the MoistureMi$er is no longer an

available option for units produced after October 2004.

OUTSIDE AIR

EXHAUSTAIR

ROOFTOP UNIT

ENERGYRECOVERYSECTION

---2

ROOF LINE

MIXED AIR

ROOM AIR

SUPPLY AIR

Fig. 33 -- Typical Unit Airflow Diagram

Table 2A -- COBRA TM Energy Recovery Unit Sequence of Operation -- Unoccupied

COOLING

Indoor Temperature Above Y2*

Humidity Low & OAT Low

Humidity Low &OAT High

Humidity High & OAT Low

Humidity High & OAT High

Indoor Temperature Between Y1 & Y2*

Humidity Low &OAT Low

Humidity Low &OAT High

Humidity High & OAT Low

Humidity High & OAT High

Indoor Temperature Below Y1

Humidity Low

Humidity High

NOTE: OAT <55 F all compression off

UNOCCUPIED

E$R Compressor IE$R Fans IRTU Compress;or I I RTU Compressor 2" IRTU Fans I RTU Heat

OffOn On_fyc.)

Off Off

On Off

On On

off o,

On off

On On

off off

On On

OffOftOffOftOffOff OnOffOffOff(_c)

On (cyc.) Off

On Icyc.I Off

On cyc. off

On (cyc.) Off

On cyc.) Off

On (cyc.) I Off

On_fyc.) Off

Off

On cyc.) Off

HEATING

Indoor Temperature Above Wl

Indoor Temperature Between Wl & W2

Indoor Temperature Below W2

LEGEND

E$R -- Energy$Recycler TM Unit

OAT Outdoor Air Temperature

RTU -- Rooftop Unit

ESR Compressor_ RTU Compressor I RTU Compressor 2" _

off Io 1 Off I_%,1

Off Off Off On, 50

Off off off I J ;JIon

*Second stage for Y2 call applicable on rooftop units with 2 circuits

only.

1-50% rooftop unit heat only applicable with 2-stage electric or gas

heating units.

Table 2B -- COBRA Energy Recovery Unit Sequence of Operation -- Occupied

COOLING

Indoor Temperature Above Y2*

Humidity Low &OAT Low

Humidity Low & OAT High

Humidity High & OAT Low

Humidity High & OAT High

Indoor Temperature Between Y1 & Y2*

Humidity Low & OAT Low

Humidity Low & OAT High

Humidity High & OAT Low

Humidity High & OAT High

Indoor Temperature Below Y1

Humidity Low

Humidity High

NOTE: OAT <55 F aJlcompression off

HEATING

Indoor Temperature Above Wl

OCCUPIED

ESR Compressor I ESR Fans I RTU Compressor I I RTU Compressor 2* I RTU Fansl RTU Heat

0n •

Off

Indoor Temperature Between Wl & W2

OAT >Set Pt (30 F)

OAT <Set Pt (30 F)

Indoor Temperature Below W2

OAT >Set Pt (30 F)

OAT <Set Pt (30 F)

LEGEND

ESR- Energy$Recycler Unit

OAT -- Outdoor Air Temperature

RTU -- Rooftop Unit

Off

o. iOnl off I oft IOnlOftOn On Off Off On Oft

E$R Compressor E$R FanslRTU Compressor1 !RTU Compressor2 RTU Fans RTU Heatt

Off On Off IOff On Off

On IOnl Off I O. I OnI offOn On Off Off On On, 50%

Off IOff IOn IOn, 50%Off Off On On, 100%

*Second stage for Y2 call applicable on rooftop units with 2 circuits

only.

"i-50% rooftop unit heat only applicable with 2-stage electric or gas

heating units.

on IOntOn On

Table 3A -- Humidi-MlZer TM Adaptive Dehumidification System Rooftop with COBRA TM Energy Recovery Unit

Sequence of Operation -- Unoccupied

COOLING

Indoor Temperature Above Y2

Humidity Low & OAT Low

Humidity Low & OAT High

Humidity High & OAT Low

Humidity High & OAT High

Indoor Temperature Between Y1 & Y2

Humidity Low & OAT Low

Humidity Low & OAT High

Humidity High & OAT Low

Humidity High & OAT High

Indoor Temperature Below Y1

Humidity Low

Humidity High

NOTE: OAT <55 F all compression off

UNOCCUPIED

ESR Compressor ] E$R Fan I RTU Compressor I I RTU Compressor 2 IRTU Fans I RTU Heat

On(o_vc.)

Off

On withoutSC Off

On withoutSC On without SC

On with SC On with SC

On (cyc.) Off

On (cyc. off

On (cyc.) Off

Off

off °n°__'> Off Off IIOn(cyc.)

Off (_ On without SC Off On (cyc.

Off Off On with SC On with HGRH On (cyc.

Off Off On with SC On with HGRH On (cyc,)

Off Off Off Off

Off On with HGRH On with HGRH On (c_/c.)

Off

HEATING E$R Compressor E$R Fans

Indoor Temperature Above Wl Off Off I

Indoor Temperature Between Wl & W2 Off Off I

Indoor Temperature Below W2 Off Off

LEGEND

E$R -- Energy$Recyeler TM Unit RTU -- Rooftop Unit

HGRH-- Hot Gas Reheat SC -- Subcooling

OAT -- Outdoor AirTemperature

RTU Compressor I I RTU Compressor 2

Off Off

RTU Fans RTU Heat

on, L

On (cyc,) On, 50%

OnIcyc.)

Table 3B -- Humidi-MiZer Adaptive Dehumidification System Rooftop with COBRA Energy Recovery Unit

Sequence of Operation -- Occupied

COOLING

Indoor Temperature Above Y2

Humidity Low & OAT Low

Humidity Low & OAT High

Humidity High & OAT Low

Humidity High & OAT High

Indoor Temperature Between Y1 & Y2

Humidity Low & OAT Low

Humidity Low & OAT High

Humidity High & OAT Low

Humidity High & OAT High

Indoor Temperature Below Y1

Humidity Low

Humidity High

NOTE: OAT <55 F all compression off

OCCUPIED

E=.CompressorIE=RFans ]RTU Compressor I I RTU Compressor 2 [ wru Fans I RTU Heat

On withoutSC

On without SC

On with SC

Off

On without SC

On withSC

On On

Off

Off On Off Off On Off

On On On without SC Off On Off

On On On with SC On with HGRH On Off

off I On I Off t Off I On I offOn On On with HGRH On with HGRH On Off

HEATING

Indoor Temperature Above Wl

Indoor Temperature Between Wl & W2

OAT >Set Pt (30 F) On

OAT <Set Pt (30 F) On

Indoor Temperature Below W2

OAT >Set Pt (30 F) On

OAT <Set Pt (30 F) On

LEGEND

E$R -- Energy$Recycler Unit RTU-- Rooftop Unit

HGRH-- Hot Gas Reheat SC -- Subcooling

OAT -- Outdoor Air Temperature

ESR Compressor E$R Fans ]RTU Compressor I I RTU Co_fpressor 2 IRTU Fans RTU Heat

Off On Off On Off

I°nl Off l Off I°n I offOn Off Off On On, 50%

I On Off Off On On, 50%On] Off I off I Golon, 0o%

AIRFLOW CONSIDERATIONS--A COBRA TM unit is

potentially capable of allowing up to 100% outdoor air (OA).

This application depends _ on the air conditions and

the amount of airflow desired. For exact capabilities on specific

COBRA applications, refer to the Packaged Roollop Builder

(PRB) selection software.

When configuring the COBRA unit, it is also important to

select the correct ratio of outdoor air to exhaust air. When using

the electronic selection sollware, the program will not allow

unacceptable ratios. In general, the exhaust airflow determines

the energy capacity available to condition the incoming outside

air. Typically, the exhaust air cfin must be at least 50% the

value of the OA cfm to satisfactorily precondition the OA.

Conversely, the OA flow must be great enough to properly

transfer energy from the OA coil.

Therefore, a minimum OA flow exists; the exhaust airflow

cannot be greater than the incoming OA flow. Additionally,

allowing the exhaust airflow to be greater than the incoming

outdoor airflow could result in space pressurization problems.

See Table 4 for minimum and maximum airflow

parameters.

Table 4 -- Factory Supported Rooftop Unit with

62AQ Unit Combination and Allowable Airflows

48/50HJ 62AQ OUTDOOR AIR

MODEL CFM RANGE

UNIT SIZE IE$R _(Min-Max)

060 300 -600

004-007 100 500- 1000

060* 300 -600

100" 500 -1000

008-514 200 10OO-2000

300 1800- 3000

LEGEND

E$R -- Energy$Recyeler Unit

OA Outdoor Air

EXHAUST

CFM RANGE

(Min-Max)

300 -100% of OA Value

500 - 100% of OA Value

300 -100% of OA Value

500 -100% of OA Value

1000 - 100% of OA Value

1800 - 100% el OA Value

*This unit combination is available only when the 62AQ is field-installed as an

accessory.

Five-Minute Compressor Time Guard

Device- This timer prevents compressorfi'om starting

unless it has been offfur at least 5 minutes. It can be defeated

for 1 cycle by simultaneously pressing FAN and UP buttons

simultaneously.

Fifteen-Minute Staging Timer -- In multistage heat-

ing or cooling, this timer prevents any higher stage from tam-

ing on until preceding stage has been on for 15 minutes. This

timer is not in effect if temperature difference is greater than

5°F (usually due to a large change in desired temperature).

Three-Minute Minimum On Time -- In normal op-

eration,whcn a stage turns on, it will not turn off for a mini-

mum of 3 minutes.

Heat/Cool Set Points (Desired Tempera-

ture) -- Aminimum difference of 2°F is enforced between

heating and cooling desired tamperatures. This is done by

allowing one setting to "push" the other to maintain this

difference. This difference is adjustable via Configuration

Option 14.

Equipment On Indicators -- When cooling equip-

me,at is on, a COOL icon preceded by a small triangle is

displayed below cooling set point. While cooling equipment is

delayed by the Time Guard timer, triangle will flash. The same

is true for HEAT icon and its preceding triangle located under

heating set point.

Dehumidify Output On Indicators -- The DEHUM

icon is on when the dehumidification output is energized.

Auto Changeover -- When auto changeover mode is

selected, a change from heat to cool (or vice versa) will not oc-

cur until an opposite mode demand has existed for lfi minutes.

If set point is changed, the 10-minuterequirement is deleted.

Power On Check -- When AC power is first applied, all

segments of display are turned on for a few seconds. Following

this, temperature display indicates model/configuration via fol-

lowing 2-digit code: CP for commercial product. See Fig. 32.

Error Codes -- If light commercial Thermidistat TM

device cannot properly read room temperature, display will

indicate two dashes (--) and all outputs (except fan, if on) will

turn off.

E4 -- If light commercial Thermidistat device's internal

memory fails, "E4" will be displayed. Replace light

commercial Thermidistat device.

E5 -- If light commercial Thermidistat device cannot prop-

erly read humidity, "'E5" will be displayed. Replace

light commercial Thermidistat device.

Smart Recovery -- With Smart Recovery selected (DIP

SW1 is on), transition out of setback begins a fixed time period

before selected recovery time and gradually adjusts room tem-

perature so desired temperature will be achieved at selected

recovery time. The fixed time period is 1.5 hours. It operates in

both heating and cooling.

Outdoor-Air Dampers -- The outdoor-air dampers of

the energy recovery section are fully adjustable. See Fig. 34.

SUPPLY-AIR DAMPERS -- The supply-air damper is a mo-

torlzed, two-position (open/closed), spring-return type damper.

There are 3 adjustable outdoor air intake stops (adjusts to 30,

45, 60, or 90 degrees open) to fix the amount of outdoor air

intake in economizer mode. The factory set position is

45 degrees. The supply air fan motor is a 3-spead motor that is

factory set for medium speed.

SUPPLY TWO-POSITION

AIR DAMPER OUTOOOR AJR DAMPER

STOPS (ADJUSTABLE)

o[ ]

BAROMETRIC RELIEF DAMPER

(IN EXHAUST HOOD)

Fig. 34 -- Outdoor-Air Dampers

BAROMETRIC RELIEF DAMPERS The barometric re-

lief damper is located in the exhaust fan section. The damper

limiter can be set for 30, 45, or 60 degrees open (90 degrees

open is not required) based on cfm and fan speed. The exhaust

air fan motor is a 3-speed motor that is factory set for medi_ma

speed.

MULTIPLE STAGE COOLING CONTROL Stage 1 is

free cooling by opening the supply-air dampers and bringing in

cool outside air. Stage 2 is efficient cooling with the energy

recovery section as outdoor temperatures rise. Stage 3 is

cooling operation of the rooftop section during peak outdoor

conditions.

When installing a COBRA TM energy recovery unit, all fans

and dampers must be balanced to achieve the proper unit

airflow. In addition to the base unit's indoor fan, the 62AQ

Energy$Recycler TM section has an exhaust damper_ exhaust

fan, supply damper and optional supply fan. The optional

supply fan may be required if the return air static pressure is too

low. See the 62AQ system fan curves (Fig. 35-70) or the

Packaged RTU Builder selection software to determine if a

supply fan is required for each application.

If proper setting for ESR supply fan and damper and

exhaust fan and damper have not been determined, make the

following adjustments using the appropriate 62AQ system fan

curve_q.

After balancing the base rooftop unit (RTU) per the base

unit installation instructions, make sure unit filters and all

panels are in place.

1. Run RTU supply fan at specified rpm. Do NOT run the

E$R fans.

2. Measure the return air static pressure at location B. See

Fig. 24.

3. Once the RTU return air static pressure is determined:

a. Plot the point on the appropriate exhaust fan

curve, using the measured return static pressure

and desired airflow.

b. If the plotted point does not fall on an existing

curve, adjust the position left or right until a curve

is reached. Each curve corresponds to a damper

position and fan speed. Follow the point vertically

down to find the actual airflow (cfm). This will be

the actual exhaust airflow of the 62AQ

Energy$Recycler unit.

NOTE: IF the E$R exhaust airflow is greater that

the supply airflow, the return plenum static pres-

sure will become more negative when the 62AQ

fans are running. In this situation, the total static

load on the rooftop unit's indoor ran motor is

increased and will operate at a higher power input

(watts).

c. Adjust the exhaust fan speed and damper position

according to the selected line from step (b).

4. Repeat Step 3 for the supply air fan and damper.

The supply fan is standard for COBRA units. If the supply

fan is not required, it can be left secured, or completely re-

moved to reduce supply static pressure.

_:D. ,

0.00

-0.1(

-0,2( r

-0.30

-0.40

35o

LEGEND

[

)

°Z

F [

// /

,,>J;//,

[

400 450 500 550 600

AIRFLOW (CFM)

650

Z_ -- Damper at 30 Degrees Open

[] -- Damper at 45 Degrees Open

<D -- Damper at 60 Degrees Open

Damper at 90 Degrees Open

High Speed

_n Med Speed

...... Low Speed

Fig. 35 -- 62AQ060 Exhaust Fan Performance Curve (208v)

700 75O

Low Speed -all damper positions

_'===='_=_Hi_ 1Speed all daraper posdlons

.,..=

_"_Me JSpeed - all d imper pesition_

350 450 550 650

AIRFLOW (CFM)

Fig. 36 -- 62AQ060 Exhaust Fan Power Curve (208v)

200

150

100

750

_og

0.00

-0.10

-0.20

-0.30

; X E

I •

I I "

/'/ !

-0.40

400 450 500 550 600 650 700 750

AIRFLOW (CFM)

LEGEND

-- Damperat30DegreesOpen

[] -- Damper at 45 Degrees Open

• Damper el 60 Degrees Open

___ -- Damper at 90 Degrees Open

High Speed

m_-- Med Speed

...... Low Speed

Fig. 37 -- 62AQ060 Exhaust Fan Performance Curve (230v)

350

250

Low Speed - all damper p( sitions

High Speed - all ,I 1per I

Med Speed -all damper posi

ositions

ions

450 550 650

AIRFLOW (CFM)

Fig. 38 -- 62AQ060 Exhaust Fan Power Curve (230v)

200

150 W

100 _u.

750

ILl

uJ_-

0.00 ,

-13.10 I

-0.20

-_,30

-0.40

-0.50

-0.60

5O0

, P

, p

,e /

550 600 650 700 750 806 850 900 950 1000

AIRFLOW (CFM)

LEGEND

A -- Damper at 30 Degrees Open

-- Damper at 45 Degrees Open

• -- Damper at 60 Degrees Open

<> -- Damper at 90 Degrees Open

High Speed

•Med Speed

...... Low Speed

Fig. 39 --62AQ100 Exhaust Fan Performance Curve (208v)

1050 1100

Med Speed - all damper positionl igh Speed - all dam_

Low Speed- _amper posi6on_

506 600 760 800 900 1000 1100

600

500

AIRFLOW (CFM)

Fig. 40 -- 62AQ100 Exhaust Fan Power Curve (208v)

400

360

1200

,,<

¢3tnO

uJ_-

0.00

_.101

-0,20 -

-0.30

-0.40

4.50

-0.60

*0.70 600

:°P f_

:_, L tf

z/I

//I

/ /

650 700 750 800 850 900 950 1000 1050

AIRFLOW (CFM)

LEGEND

A -- Damper _ 30 Degrees Open

-- Damper _ 45 Degrees Open

• -- Damper _60 Degrees Open

-- Damper _90 Degrees Open

High Speed

_--_Med Speed

...... Low Speed

Fig. 41 -- 62AQ100 Exhaust Fan Performance Curve (230v)

1100

60O

High Speed - all damper positions

Med Speed - all damper positions

700 800 900 1000 1100

AIRFLOW (CFM)

Fig. 42 -- 62AQ100 Exhaust Fan Power Curve (230v)

650

6OO

55O

5O0

45O

400

35O

1200

,,<

t..._

Zo¢

-0.10

-0.20

-0.30

-0.40

-0.50

-0.60

-0.701100

, I

,_'

•/I

o/ I

I•

''/ I &

Pi/ /''...

1200 1300 1400 1500 1600 1700 1800 1900 2000 2100

AIRFLOW (CFM)

LEGEND

-- Damper at 30 Degrees Open

-- Damper at 45 Degrees Open

• -- Damper at 60 Degrees Open

<_ -- Damper at 90 Degrees Open

_-- High Speed

_--_ Mad Speed

...... Low Speed

Fig. 43 -- 62AQ200 Exhaust Fan Performance Curve (208v)

110o

Low Speed - all damper positions

t200 1300 1400

I i SSIORS

High Speed - all damper po "' J

ed Speed -all damper positions

1500 1600 1700 1800 1900

750

700

650

600

550 O

500 u<(

450

400

350

2000

AIRFLOW (CFM)

Fig. 44 -- 62AQ200 Exhaust Fan Power Curve (208v)

ILl

p-_

_3U}A

_o.:i

___.=

UJI-

-0,I0

-0.20

-0.30

-0.40

-0.50

-0.60

-0.70

1100

I / '! ' { %"

,! ,/

,_ :_/II

/1 ' iil't

1200 1300 1400 1500 1600 1700 1800 1900

AIRFLOW (CFM)

LEGEND

Z_ -- Damper at 30 Degrees Open

[] -- Damper at 45 Degrees Open

• -- Damper at 60 Degrees Open

O -- Damper at 90 Degrees Open

_ __ High Speed

_m-- Med Speed

...... Low Speed

Fig. 45 -- 62AQ200 Exhaust Fan Performance Curve (230v)

2000 2100

1100 1200

High Speed -all damper positions

- all damper p_sitions

1300

)eed -all damper positions

1400 1500 1600 1700

550

750

650

55O

450

35O

1800 1900 2000

AIRFLOW (CFM)

Fig. 46 -- 62AQ200 Exhaust Fan Power Curve (230v)

lUl-

-0.10

_0.20

-0,30

-O.&O

-0.50

-0.60

"/,

' . #e

I_• II

:_ I , ,, _ f

,/, ,, /

*l I

_ n I l* I /

° / , ,;// I

I I

' I ' III

'[5

-0.70

1100 1200 1300 1400 1500 t600 t700 1800 1900 2000 2100

AIRFLOW (CFM)

LEGEND

LI -- Damper at 30 Degrees Open

[] -- Damper at 45 Degrees Open

• -- Damper at 60 Degrees Open

O-- Damper at 90 Degrees Open

-- -- High Speed

.... Med Speed

...... Low Speed

Fig, 47 -- 62AQ200 Exhaust Fan Performance Curve (460v)

1100 1200

High Speed- all c 1per positior

/_==*_"- / Me_ Speed- alldamper positions

_ r""""--Low' Speed - all damper positions

II I

1300 1400 1500 1600 1700 1800 1900 2000

900

800

700

6oo o

I1.

5oo

400

2100

AIRFLOW(CFM)

Fig. 48 -- 62AQ200 Exhaust Fan Power Curve (460v)

_a z

-0.10 I

-0.20"

-0.30

-0.40

-0.59

-0.60"

-0.70

1700

DA_ 3ER ST( ,P DAMPI RSTOF NO D kMPER

30 D IG 45 DE( STOF

f/,

1800

PULLEY 5 TURNS OPEN

I I

1900 2000 2100

/Jls

// /

LEGEND

--8-- Pulley 0 Turns Open

Pulley 1 Turn Open

Pulley 2 Turns Open

Pulley 3 Turns Open

Pulley 4 Turns Open

-- Pulley 5 Turns Open

2200 2300 2400 2500 2600 2700 2800 2900 3000 3100 3200

AIRFLOW (CFM)

Fig. 49 -- 62AQ300 Exhaust Fan Performance Curve (230v)

D\MPER _DEG DAMFER90D_G

DAMP _R 30 D[G

PUILEY5T RNSOFEN

1700 1800 1900 2000 2100 2200 2300 2400 2500 2600

_PULLEY

;LOSE r

rll}Y 1 e'_

PUILE 2

TURN OPEN

PULLEY 3

TURNS OPEN

_ULLEY 4

URNSIIPEN

2700 2800 2900

AIRFLOW (CFM)

Fig. 50 -- 62AQ300 Exhaust Fan Power Curve (230v)

2500

2000

1500

5O0

3000 3100

I%.

0.50

o4g,_ ='---

°.0°

z_:_

WI-

0.20

0.10

0.00

-0.10

-0.20 '

_},3g

-O.4O

-030

-0.60

350

..... 1

400 450 500 550 600 650 700 750

AIRFLOW (CFM)

LEGEND

Z_ -- Damper at 30 Degrees Open

[] -- Damper at 45 Degrees Open

• Damper at 60 Degrees Open

<_ -- Damper at 90 Degrees Open

.... No Fan

High Speed

--_-- Med Speed

...... Low Speed

Fig. 51 -- 62AQ060 Supply Fan Performance Curve (208v)

High Speed -all damper positions

_:ed - al;_ns Med Speed* alldamper positions

300

250

200

150 _.1

100 0,.

so "_

300 400 500 600 700

AIRFLOW (CFM)

Fig. 52 -- 62AQ060 Supply Fan Power Curve (208v)

i.=_;

U_F-

0.50

0.40

0.30

0.20

0.10

0.00

-0.10

-0.20

-0.30

-0.40

-0.50

-0.60350

L'S.'zs-.-S..,..

450 550 650 750

AIRFLOW (CFM)

LEGEND

Z_ -- Damper at 30 Degrees Open

[3 -- Damper at 45 Degrees Open

• -- Damper at 60 Degrees Open

O -- Damper at 90 Degrees Open

.... No Fan

High Speed

--_-- Med Speed

...... Low Speed

Fig. 53 -- 62AQ060 Supply Fan Performance Curve (230v)

300

,,.,_€ m,I,

Low Speed - all damper positions

High Speed - all damper positions

Med Speed - all damper positions

400 500 600

AIRFLOW (CFM)

Fig. 54 -- 62AQ060 Supply Fan Power Curve (230v)

,,250

2o0

150 &U

100 ,,_

70O

IJJ

i..(_

_-__.

0.8o

0.70

0.0o

0.50

0.40

0.30

0.20

0.1o

o.oo

-o.10

_0.2o

-0,30

-0,40

-0.50

-0.60

4OO

500 000 700 800 900

10oo 1100

AIRFLOW (CFM)

LEGEND

-- Damper at 30 Degrees Open

[] -- Damper at 45 Degrees Open

• -- Damper at 60 Degrees Open

-- Damper at 90 Degrees Open

.... NO Fan

High Speed

_Med Speed

...... Low Speed

Fig. 55 -- 62AQ100 Supply Fan Performance Curve (208v)

55O

High Speed - with damper at 90 and 60 degree=

High Speed - with d_mper at 30 degrees

Low Speed - _11damper positions

050 750 050 950

550

250

1050

AIRFLOW(CFM)

Fig. 56 -- 62AQ100 Supply Fan Power Curve (208v)

450

350

_=_o=

llJt--

0.90

0.80

0,70

0.60

0.50

0.40

0.00

0.20

0.10

0.00

0,10

-0.20

-0.30

_).40

-0.50

-0.605O0 600

_'115'

700

800

900 1000 1100

AIRFLOW (CFM)

LEGEND

A -- Damper at 30 Degrees Open

-- Damper at 45 Degrees Open

• -- Damper at 60 Degrees Open

,_ -- Damper at 90 Degrees Open

,. -- No Fan

-- High Speed

_-- Med Speed

...... Low Speed

Fig. 57 --62AQ100 Supply Fan Performance Curve (230v)

700

Lowspe

600 700

Speed

all damper positions

800 900 1000 1100

600

AIRFLOW (CFM)

Fig, 58 -- 62AQ100 Supply Fan Power Curve (230v)

5O0 LU

400

3OO

1200

z_:

wl,,-

0,90

0.80

0.70

0.60

0.50

0.40

0.30

0.20

0.10

0.00 1

-0.10

-0.20

-0.30

-0.40

-0.50

-0,60

1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000

AIRFLOW (CFM)

LEGEND

Z_ -- Damper at 30 Degrees Open

[] -- Damper at 45 Degrees Open

• -- Damper at 60 Degrees Open

-- Damper at 90 Degrees Open

O---,. _ No Fan

High Speed

Med Speed

...... Low Speed

Fig. 59 -- 62AQ200 Supply Fan Performance Curve (208v)

lOO0 11oo

,,I

1200

High Speed - atl damper positions

Low Speed - all damper position_,_ J_

_eMed Speed - all damper positions

1300 1400 1500 1600 1700 1800 1900

6_0

300

2000

500

400

AIRFLOW (CFM)

Fig. 60 -- 62AQ200 Supply Fan Power Curve (208v)

I.=_

___=

IJJ I,-

0.70

0.60 .

0.50

0.40

0.30

0.20

0.10

0,00.

-0.10

-0.20

-0.30

-O,4O

-0.50

-0.60

1100 1200 1300 1400 1500 1600 1700 1800 1900 2000

AIRFLOW (CU FT/MIN)

LEGEND

L_ -- Damper at 30 Degrees Open

[] -- Damper at 45 Degrees Open

•-- Damper at 60 Degrees Open

O -- Damper at g0 Degrees Open

.. _No Fan

High Speed

------ Med Speed

...... Low Speed

Fig. 61 -- 62AQ200 Supply Fan Performance Curve (230v)

800

€__ High Speed -all da,,,per positions-- __

Low Speed -all damper positions

mml_ _PO -_a I damper positions

1000 1100 1200 1300 1400 1500 1600 1700 1800

,7oo _,

-600

5OO Z

AIRFLOW(CFM)

Fig. 62 -- 62AQ200 Supply Fan Power Curve (230v)

400

3OO

1900 2000

1100 1200 1300 1400 1500 1600 1700 1800 _900 2000

AIRFLOW(CFM)

LEGEND

-- Damper at 30 Degrees Open

Damper at 45 Degrees Open

• Damper at 60 Degrees Open

O -- Damper at 90 Degrees Open

.... NoFan

-- High Speed

mmm Med Speed

...... Low Speed

Fig. 63 -- 62AQ200 Supply Fan Performance Curve (460v)

1000

lOOO 1t00

High Speed -all damper positions _._

Low Speed -all damper positions

Med Speed - all damper positionl

1200 1300 1400 1500 1600 1700 1800

AIRFLOW (CFM)

Fig. 64 -- 62AQ200 Supply Fan Power Curve (460v)

1900

900

800

700 0

600

50O

4OO

2000

0.60

0.50 I . _ :

!!!i...... ..........i •

1900 2000 210O 2200 2300 2400 2500 2600 2700 2800 2900 3000

AIRFLOW (CU FT/MIN)

LEGEND

A -- Damper at 30 Degrees Open

Fr -- Damper at 45 Degrees Open

• -- Damper at 60 Degrees Open

O -- Damper at 90 Degrees Open

.. -- No Fan

High Speed

_-- Med Speed

...... Low Speed

Fig. 65 -- 62AQ300 Supply Fan Performance Curve (208v)

High Speed -all damper posilions

1800 1900 2000 2100

Low Speed-alldamperpositions

2200 2300 2400 2500 2600 2700

i H _14oo

AIRFLOW (CFM)

Fig. 66-- 62AQ300 Supply Fan Power Curve (208v)

1200 03

1100 _

112

1000 0

' i 900

1800

i 700

2800 2900 3000

0.90 i

0.00

0.70

0.60

2200 2300 2400 2500 2600 2700 2800 2900 3000 3100 3200 3300

AIRFLOW (CFM}

LEGEND

A -- Damper at 30 Degrees Open

[] Damper at 45 Degrees Open

• -- Damper at 60 Degrees Open

_, -- Damper at 90 Degrees Open

.... No Fan

High Speed

--_-- Med Speed

...... Low Speed

Fig. 67 -- 62AQ300 Supply Fan Performance Curve (230v)

1500

1400

13oo_"

1800 1900 2000 210<) 2200

+ +

2300 2400 2500 2600 2700 2800

AIRFLOW (CFM)

Fig. 68 -- 62AQ300 Supply Fan Power Curve (230v)

11oo o.

1000 _u.

900

8OO

2900 3000

i,. iX:

_:ID. •

_(3Z

UJI--

{/)

0.90 -

2300

2400 2500 2600

AIRFLOW (CFM)

2700 2000 2900 6CO0

LEGEND

A -- Damper at 30 Degrees Open

[] -- Damper at 45 Degrees Open

•-- Damper at 60 Degrees Gpen

@-- Damper at 90 Degrees Open

.... NO Fan

High Speed

--_-- Med Speed

...... Low Speed

Fig. 69 _62AQ300 Supply Fan Performance Curve (460v)

/High Speed - all damper positions

i i Ii

-- i

1800

1700

1600

1500

1200

110D

1000

- 9_0

1900 2000 2100 2200 2300 2400 2500 2600 2700 2800 2g00 3000

AIRFLOW (CFM)

Fig. 70 -- 62AQ300 Supply Fen Power Curve (460v)

¢c

PRE-START-UP

Failure to observe the following warnings could result in

serious personal injury.

1. Follow recognized safety practices and wear protec-

tive goggles and gloves when checking or servicing

refrigerant system.

2. Do not operate compressor or provide any electric

power to unit unless compressor terminal cover is in

place and secured.

3. Do not remove compressor terminal cover until

all electrical sources are disconnected and tagged

accordingly.

4. Relieve all pressure from system before touching or

disturbing any connections inside compressor terminal

box. lfreliigerant leak is suspected around compressor

terminals, use accepted methods to recover refrigerant.

5. Never attempt to repair or solder any components

while refrigerant system is under pressure.

6. Do not use torch to remove any component. System

contains oil and refrigerant under pressure. To remove

a component, wear protective goggles and gloves and

proceed as follows:

a. Shut off electrical power to unit and tag

disconnect.

b. Recover refrigerant to relieve all pressure from

system, using both high-pressure and low-

pressure ports.

c. Cut component connection tubing with tubing

cutter, and remove component from unit.

d. Carefully unsweat remaining tubing stubs

when necessary. Oil can ignite when exposed to

torch flame.

Refer to 48/50HJ Installation Instructions for Pre-Start-Up

information for the rooftop unit section. Proceed as follows to

inspect and prepare the unit for initial start-up:

I. Remove filter access panel, blower access panel, and con-

trol panel access cover on the energy recovery section.

2. Read and follow instructions on all WARNING,

CAUTION, and INFORMATION labels attached to (or

shipped with) unit.

3. Make the following inspections:

a. Inspect for shipping or handling damages such as

broken lines, loose parts, or disconnected wires.

b. Inspect for oil at all refrigerant tubing connections

and on unit base. Detecting oil usually indicates a

refrigerant leak. Leak-test all refrigerant tubing

connections using an electronic leak detector,

halide torch, or liquid-soap solution.

c. Inspect all field and factory wiring connections Be

sure that connections are completed and tight.

d. Inspect upper (supply) and lower (exhaust) coils

for damage and refrigerant leaks, lffin damage is

noted, carefully straighten fins using a fin comb.

4. Tighten compressor bolddown bolts to 5.5 to 6.5 ft-lb of

torque.

5. Verify the following:

a. If installed, ensure optional supply and exhaust

blower wheel set screws are tight and wheels are

centered within the blower housing.

b. Make sure supply and exhaust air filters are in

place.

c. Make sure the condensate drain is of correct

dimensions and primed with water to ensure

proper drainage.

d. Reinstall all access panels.

e. Ensure all tools and miscellaneous parts have been

removed.

START-UP

Refer to the 48/50HJ Installation Instructions for informa-

tion on Start-Up for the rooftop unit section.

Unit Preparation -- Make sure the unit has been in-

stalled in accordance with installation instructions and applica-

• ble codes.

Supply and Exhaust Filters -- Make sure filters are

comectly installed on unit. Do not operate without filters in

place.

Outdoor-Air Inlet Screens -- Outdoor-airinletscreen(s)

must be in placebefore operating the unit.

Compressor Mounting -- Compressors are internally

spring-mounted. Ensure wooden shipping block has been

removed from under the compressor and holddown bolts are in

place.

Internal Wiring -- Check all low and high voltage con-

nections for proper locations. Ensure connections are tight.

Cooling- Set light commercial Thermidistaff TM mode

selection to Cooling and fan mode to Auto. Ensure thermostat

has been adjusted to a setting below room temperature. Refer to

Light Commercial Thermidistat Accessory section for correct

unit operation.

Heating -- Set light commercial Thermidistat mode selec-

tion to Heating and fan mode to Auto. Ensure thermostat has

been adjusted to a setting below room temperature. Refer to

Light Commercial Thermidistat Accessory section for correct

unit operation.

Operating Sequence -- Refer to Step 5 -- Conduct

Light Commercial Tbermidistat Start-Up and Checkout on

page 45, and Tables 2A and 2B for Energy$Recycler TM section

operating sequences.

SERVICE

Refer to base unit installation instructions or 62AQ Installa-

tion Instruction for all service information.

Fuse Box (48HJ012,014- 208/230-3-60 Units

Only) -- Certain 48HJ units contain fuses for the power sup-

ply. The fuse box is located in the compressor section in a

single point box. See Fig. 71. Replacement fuses are cartridge

type, non-renewable, time delay FRN type of the appropriate

size and voltage. Refer to existing fuse size and voltage for

replacement.

Fig. 71 -- Fuse Box (48HJ012,014 _208/230-3-60 Units Only)

TROUBLESHOOTING

Use Tables 5 and 6, and Fig. 72-79 when troubleshooting this unit.

NOTES:

1. If any of the original wire furnished must be

replaced, it must be replaced with Type 90 C

wire or its equivalent.

2. TRAN is wired for 230-v unit. If unit is to be run

with 208-v power supply, disconnect BLK wire

from 230-v tap (ORN) and connect to 208-v tap

(RED). Insulate end of 230-v tap.

3. Use copper, copper clad aluminum conductor.

Fli s[_[

[N[I_U;0 D[ [UEt61Z_Ü

COMPON[HT ARRA_G[M[#1

"lOII _rl R[I L

evs_

orl,_2

CTCL[ r[_o

_IL-

-1 62A0

77r ,. .,

CA_Z-- -- =0,TtT0a_-

--mtl eli ri '1 st1 m[0 _eLt i

lit

iiii

iiiJ

9ee_

i" "=

atu

-ael

lto

-;nx

Fig. 72 -- COBRA Unit Wiring Schematic (50HJOO6with 62AQ060/100, 208/230_3-60)

with Electro-Mechanical Controls

LEGEND FOR FIG. 72-79

_ I Contactor HPS IHigh-Pressune Switch

PCapacitor HR IHeatln_g_-Relay

ICircuit Breaker HS Hall Effect Sensor

CC i Compressor tordacfor t -- tgn)for

CER I Cornpressor Energy Recovery section IDM IInduced Draft Motor

CH Crankcase Hester IFC IIndoor Fan Contactor

CLO -- Compressor Lockout IFM IIndoor Fan Motor

COC -- Cool Changeover Relay IGC -- Integrated Gas Unit Control (48HJ only)

COH Heat Changeover Relay LTLO -- Low Temp C[_ctingLockoct

COMP Comp_essoT Motet LPS -- Low-Pressure Switch

CR -- Cooling Rstay LS -- Limit Switch

CTD Compressor Time Delay LSM -- Limit Switch (Manual)

OB -- Defrost Board MGV IMain Gas Valve

OFT -- Defrost Thermostat OATC -- Outdoor-Air Thermostat tool)

DM -- Damper Motor OATH Outdeor-Air Thermostat (Heat

O_ I Defrost Relay OCI_ IOcc_pteU Rt_P,y

EFt Exhaust Fan Contacfot OFt -- Outdoor Fan Contactor

EQUIP I Equipment OFM -- Outdoor Fan Motor

FC I _upp_y Fan Contactor OLR IOverload Relay

FPT IFreeze-Up Protection Thermostat PL Plug Assembly

FR -- Fan Relay QT Quadruple Terminal

FB I Fuse RS Rollout Switch

aND qGround RTU qRooftop Unit

GVR IGas Valve Relay RVS IReversin_ Valve Solenoid

HM IHumidity Relay BAT -- Supply Air Temperature

SEN -- Sensor

TB _Terminal Block

Ton _Time Delay Relay

TRAH -- Transformer

Field SpliCe

Marked Wire

<_ Terminal (Marked)

O Terminal (Onmarked)

Terminal _lock

•Splice

Splice (Marked)

FactoP/Wiring

i_ Field Contro_Wiring

Field Power Widng

-- - -- Accessory or Optional Wiring

To indicate common potential

Io_ly. Not to represer_tv_g.

, c

Till

]Ill

) CLO

)Till

)Ill

Fig. 72 -- COBRA TM Unit Wiring Schematic (50HJ006 with 62AQ0601100, 2081230-3-60)

with Electro-Mechanical Controls (cont)

NOTES:

1. If any of the original wire furnished must be replaced, it must

be replaced with Type 90 C wire or its equivalent.

2. Three phase motors are protected under primary single

phasin_l conditions.

3. TRAN is wired for 230v unit. If unit is to be run with 208v

power supply,disconnect BLK wire from 230v tap (ORN) and

connect to 200v tap.

4. IFMOVL not present with size 0t 2 high static.

5. Use copper, copper clad aluminum or aluminum conductors.

oil

mmewDwwm

[][][] [ lq

i C_pON[ HI ARnAHG[HENT

HJ008/009

RIO

_L_

_RX

Fig. 73 -- COBRA TM Unit Wiring Schematic (48HJ008-012 with 62AQ200, 208/230-3-60)

with Electro-Mechanical Controls

[&uiP G_D

ni i _GRH;TEL_I,

HJOlt/

¢OW4£_[AL

I.EnNIDISTXT

- - , %%*,o,

_ I F _ RIO

I4 miD_

__ I t ]

i- I ]I

_I -- i - BL_-

tIi J -i- yCL-

J!ll i

IFII

IIiFOH_ ORI-

IIIF

I_I I PI_ PNK

Iqll BHm

pI_I 8mN-

Fill 1,41

IIII ImT-

IIII

__2 111

ZZZJ

rLs_ PLI

qJp_l

_i_,

RTU 208/230-3-60

•BRa

BI Hp P_rp

Fig. 73 -- COBRA TM Unit Wiring Schematic (48HJ008-012 with 62AQ200, 208/230-3-60)

with Electro-Mechanical Controls (cont)

tlm_UlT MU

ICSJ_4V_BR[_[_ VOL_$ Wf_ JO Tmlp

(

C_PO_IWI AR_AIG[W[WT

1eL[ 1 9_

--)LM

..... __ _ _ J l I

'o'- J I -_ 1

...... _ aim _R" T(L_ _FROM

$_PPLY....... J ' (oUIP GH_ _ I......

SJl[ ?¢_ ll_ _TTL -IlL

_:[; ;2;

.... I

--ONN HL)

aLU

UNIT

Fig. 74 -- COBRA TM Unit Wiring Schematic (50HJ008/009 with 62AQ300, 208/230-3-60)

with Electro-Mechanical Controls

208/230-3 60

RIU

Fig, 74 -- CORRA TM Unit Wiring Schematic (50HJ008/009 with 62AQ300, 208/230-3-60)

with Electro-Mechanical Controls (cont)

NOTES:

1. If any of the original wire furnished must be replaced, it must

be replaced with Type 90 C wire or its equivalent.

2. Three phase motors are protected under primary single

Dr_ghasinconditions.

3. _FMOV[- notpresent with size 012 high static or 014 std. mtr.

4. Use copper, copper clad aluminum or aluminum conductors.

[] []D

C_POHENI kR_NGEM[_T

Fig. 75 -- COBRA TM Unit Wiring Schematic (50HJ014 with 62AQ300, 460-3-60'

with Electro-Mechanical Controls

ors j

su_m

,_'°'" °'"_T'E °'°*ll%q_

.............'_'-' _JLL_

CRS_N6LEOIIAO0

6LV L

[]

RTU 460-3 60

Cz CLO_

eLK

all _ m

Oft _ _[L rr-I L

__St_K [L ifc _[1 ir.

Fig. 75 -- COBRA TM Unit Wiring Schematic (50HJ014 with 62AQ300, 460-3-60)

with Electro-Mechanical Controls (cont)

leo*_D

ore CZ

or¢_z

MCl

I IFI

•(LOI

__ 62A0

._ oil

Tl,I

L___ L,,_

(_i ({ +"

i_-_':':=_'"°'LL_11_-',,_ I

ut' W IIA. r) _l_ s_,_

.Mn

PREM][RL]NK UNIT CONTROL SCHE_4AT]C ,,t,+....

'll

--eMl

c;i: _q

6Lu +it

-,,_1 II lill

1141}lIjil

,l*--

_o*(+

Pr emierLir_

[+ooo0o....E]E]E;E]E]C

g_l[[IL_

NOTES:

1. If any of the original wire furnished must be replaced, it must

be replaced withType 90 C wire or its equivalent.

2. Three phase motors are protected under primary single

basing conditions.pl

3. Use copper conductorsonly.

4. Toprrogram PremierLink_:

a. Aux output for Pin 3, J8 must be set on exhaust tan.

b. In service configuration, set power exhaust to continuous.

Fig. 76 -- COBRA TM Unit Wiring Schematic (48HJ006/007 with 62AQ060/100, 460-3-60)

with Factory-Installed PremlerLink TM Controller

Fig. 76 -- COBRA TM Unit Wiring Schematic (48HJ006/007 with 62AQ060/100, 460-3-60)

with Factory-Installed PremlerLink TM Controller (cont)

I I --fip_,L,

S_LErOImT

6o__,Iu po.l, .I I

ILIITNI¢ N[AT

OPTI_SI_ZS sUP_L_....... J

NOTES:

1. If any of the original wire furnished must be replaced, it must

be replaced with Type 90 C wire or its equivalent.

2, Three phase motors are protected under primary single

phasinng conditions.

3. IFMOVL not present with size 012 high static.

4. Use copper conductors only.

5. Toprrogram PremierLink_:

a. Aux output for Pin 3, J8 must be set on exhaust fan.

b. In service configuration, set power exhaust to continuous.

Fig. 77 -- CORRA TM Unit Wiring Schematic (50HJ008-014 with 62AQ200, 460-3-60)

with Factory-Installed PremierLink TM Controller

"°t

pNK--

rwK

vlo

61_ --6ml

_ --011

¢OMN

FOIW

] Te*

Fig. 77 -- COBRA TM Unit Wiring Schematic (50HJ008-014 with 62AQ200, 460-3-60)

with Factory-Installed PremlerLInk TM Controller (cont)

62A0

SCHEMATIC

208/230-3-60

PREM]ERLINK UN]T CONTROL SCHEMATIC

NOTES:

1. If any of the ori=ginalwire furnished must be replaced, it must

be replaced withType 90 C wire or its equivalent.

2. Three phase motors are protected under primary single

Phasing conditions.

3. TRAN is wired for 230v unit. If unit is to be run with 208v

power supply,disconnect BLK wirefrom 230v tap (ORN) and

connect to 200v tap.

4. Use copper, copper clad aluminum or aluminumconductors.

5. To program PremierLinkTm:

a. Aux output for Pin 3, J8 must be set on exhaust fan.

b. In service configuration, set power exhaust to continuous.

Fig. 78 -- COBRATM Unit Wiring Schematic (50HJ008/009 with 62AQ300, 208/230-3-60)

with Factory-Installed PremierLink TM Controller

_OUNECTIOm

e_mD

WNT-

_LX

0Ma

OlM-

-- e_N --

--JEe--

-- o.

_L VO

Fig. 78 -- COBRA TM Unit Wiring Schematic (50HJ008/009 with 62AQ300, 208/230-3-60)

with Factory-Installed Premierl.ink TM Controller (cont)

..... I _ _ _ .,I I I

..... ,.I I

suPrL_ J

62A0

: --_r[L [_HlUST

_li _EL-- 6DUI_

...... -o/,__

oo oo

NOTES:

1, If any of the original wire furnished must be replaced, it must be

replaced with Type 90 C wire or its equivalent.

2. Three phase motors are protected under primary single phasing

conditions.

3. TRAN is wired for 230v unit. If unit is to be run with 208v power

supply,disconnect BLKwire from 230v tap (ORN) and connect to

20Ov tap.

4. Use copper, copper clad aluminum or aluminum conductorsonly.

5. To program premierLinkTM:

a. Aux output for Pin 3. J8 must be set on exhaust fan.

b. In service configuration, set power exhaust to continuous,

Fig, 79 -- COBRA "rMUnit Wiring Schematic (50HJ008/009 with 62AQ300, 2081230-3-60)

with Factory-Installed PremierUnk TMController

NOTES:

f. If any of the original wire furnished must be replaced, it must be

replaced with Type 90 CWireor its equivalent.

2. Three phase motors are protected under primary single phasing

Conditions.

3. TRAN is wired for 230v unit. If unit is to be run with 208v power

supply, disconnect BLK wire from 230v tap (ORN) and connect to

200v tap.

4. Use copper, copper clad aluminum or aluminum conductors only.

5. To program Prem)erLink_:

a. Aux output for Pin 3, Jg must be set on exhaust fan.

b. In service configuration, set power exhaust to continuous.

RTU 208/230-3-60

SCHEMATIC

Fig. 79 -- COBRA TM Unit Wiring Schematic (50HJ008/00g with 62AQ300, 208/230-3-60)

with Factory-installed PremierLInk TM Controller (cont)

Table 5 -- Heating and Cooling Troubleshooting

PROBLEM

Compressor and Outdoor Fan

Will Not Start.

CAUSE

Powerfailure.

Fuse blown or circuitbreaker tripped.

Defectivethermostat, contactor,transformer, con-

trol relay, or capacitor.

Insufficientlinevoltage.

Incorrector faulty wiring.

LightCommercialThermidistatT'_program in UCf

or UC2 mode.

REMEDY

Call power company.

Replace fuse or reset circuitbreaker.

Replace component.

Compressor Will Not Start but

Outdoor Fan Runs,

Determine cause. Replace compressor.

Compressor Cycles (Other

than Normally Satisfying

Thermostat).

Suction Pressure Greater

than 100 pslg in Cooling

Mode,

Excessive Head Pressure.*

Head Pressure too Low.*

Excessive Suction Pressure.*

Defective fan motor.

Faulty wiring or looseconnection incompressor

circuit.

Compressor motor burned out, seized, or internal

overload open,

Defective run/start capacitor,overload, start relay,

Time Guard device.

No DEHUM signal from light commercial

Thermidistat device.

Time Guard device not timed out.

Refrigerant overcharge or undercharge.

Defective compressor.

Insufficientline voltage.

Blocked outdoor coil or dirtyair filter.

Defective run/start capacitor, overload, or start

relax/.

Faulty outdoor-fan (cooling) or indoor-fan (heat-

ing) motor or capacitor.

Restriction in refrigerant system.

DefectiveTXV.

Did), air filters.

Dirty coils.

Refrigerant overcharged.

Air in system.

Condensing air restricted or air short-cycling.

Low refrigerant charge.

Compressor valves leaking.

Restriction in ,quid tube.

High heat load.

Compressor valves leaking.

Refrigerant overcharged.

Dirty air filters or coils.

Low refrigerant charge.

Metering device or low side restricted.

Insufficient indoor airflow.

Suction Pressure too Low.*

LEGEND

TXV -- Thermostatic Expansion Valve

Determine cause and correct.

Check wiring diagram and rewire correctly.

Check light commercial Thermidistat program. See Step 5

-- Conduct Light Commercial Thermidistat Start-Up and

Checkout on page 45.

Replace fan motor.

Check wiring and repair or replace.

Determine cause and replace.

Check for DEHUM signal on light commercial Thermidistat

LCD display.

Allow time for Time Guard device to recycle unit.

Recover refrigerant, evacuate system, and recharge to

nameplate.

Replace and determine cause.

Determine cause and correct.

Determine cause and replace.

Replace,

Locate restriction and remove.

Replace TXV.

Replace filters.

Clean coils.

Recover excess refrigerant.

Recover refri_lerant, evacuate system, and recharge.

Determine cause and correct.

Check for leaks; repair and recharge.

Replace compressor.

Remove restriction.

Check for source and eliminate.

Replace compressor.

Recover excess refrigerant.

Replace filter,clean coils.

Check for leaks; repair and recharge.

Remove source of restriction.

Increase air quantity.Check filter and replace if necessar./.

"62A E R I T's I TXV Ih 100 _Im P t h I r

Q nergy$ ecyc er ecton uses s w't a ps'_ max um operating pressure MO feature o m't suction p essure

in Cooling mode at high temperatures. Alwaysconsult charging chart for correct operating pressures.

Table 6 -- Supply-Air Damper Troubleshooting

PROBLEM

Damper Does Not Open; Fan(s) Off.

Damper Will Not Close.

LEGEND

OCR -- Occupied Relay

CAUSE

OCR not energized (thermostat in Unoccupied

mode).

OCR defective.

Damper jammed.

Damper motor defective.

Loose wiring.

Damper jammed.

Motor return spring broken.

REMEDY

Check light commercial Thermidistat program

settings (see Step 5 -- LightCommercial Thermi-

distat Start-Up and Checkout section, page 45).

Replace OCR.

Free damper.

Replace damper motor.

Check wiring and correct.

Free damper.

Replace motor.

Copyright20(_ CarrierCorporation

ManufacturerreservestheHghtto discontinue,orchange at anybme,Bpectflcation8ordesignswithoutnoticeandwithoutincurdntiobligations.

ooto,o0No.o3,_so,°sP°ct ,°0.0.A. P0.,_o°

Tab IllIra lb 6a 0b

II.

III,

ROOFTOP SECTION AND ENERGY$RECYCLER SECTION (62AQ) START-UP CHECKLIST

(Remove and Store in Job File)

PRELIMINARY INFORMATION

COBRATM ENERGY RECOVERY UNIT MODEL NO.: SERIAL NO.:

DATE: TECHNICIAN:

RTU 62AQ

PRE-START-UP (insert checkmark in box as each item is completed)

[] VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS

[] CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS

[] CHECK THAT SUPPLY AND EXHAUST HOODS ARE INSTALLED AND AIR FILTER(S) ARE CLEAN AND IN

PLACE

[] CHECK FAN WHEEL AND PROPELLER FOR LOCATION 1N HOUSING/ORIFICE AND SETSCREW TIGHTNESS

[] CHECK PULLEY ALIGNMENT AND BELT TENSION PER INSTALLATION INSTRUCTIONS (62AQ300 BELT

DRIVE EXHAUST FAN AND SUPPLY FAN)

START-UP

COMBINED ELECTRICAL (COBRA ENERGY RECOVERY UNIT)

SUPPLY VOLTAGE L1-L2 L2-L3

COMPRESSOR AMPS L 1L2

INDOOR FAN AMPS LI L2

L3-L1

TEMPERATURES

OUTDOOR-AIR TEMPERATURE

RETURN-AIR TEMPERATURE

ENTERING SUPPLY-AIR (RTU)

LEAVING AIR TEMPERATURE (RTU)

PRESSURES (IN COOLING MODE)

ROOFTOP SECTION

REFRIGERANT SUCTION

REFRIGERANT DISCHARGE

PSIG TEMP AT COMPRESSOR

[] VERIFY REFRIGERANT CHARGE USING CHARGING CHART LABEL ON UNIT,

62AQ

REFRIGERANT SUCTION PSIG TEMP AT COMPRESSOR

REFRIGERANT DISCHARGE PSIG TEMP AT COMPRESSOR

[] VERIFY REFRIGERANT CHARGE USING CHARGING CHART LABEL ON UNIT.

CL-1

III. START-UP (cont)

AIRFLOWS (62AQ)

SUPPLY AIR CFM

MOTOR SPEED (Circle One) LOW MEDIUM

DAMPER SETTING (°) (Circle One) 30 45

EXHAUST AIR CFM

MOTOR SPEED (Circle One) LOW MEDIUM

DAMPER SETTING (°) (Circle One) 30 45 60

HIGH

60 90

HIGH'

IV. LIGHT COMMERCIAL THERMIDISTAT TMACCESSORY

NOTE: To disable Keyboard Lock, press MODE, COPY PREVIOUS DAY, SET TIME/TEMP, and HOLD End buttons in :tu

sequence within 5 seconds.

PROGRAMMED Yes No

KEYBOARD LOCK Yes No

OCCUPIED SETHNGS:

ROOM TEMP

,CI

ROOM RH %

TIMES:

OCI

OC2

TIMES:

UC1

UC2

ON OFF

oN" o_

,I--

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without Incurring obligations.

oa,o,o0No.o3,_8o,s0 o, ,0o0 .03.o_0o,oP0OL- ,o0

Tab I IIIla lb 6a 6b

CARRIER Package Units(both Units Combined) Manual L0605441

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