CARRIER Package Units(both Units Combined) Manual L0521271

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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Page Count: 64

48PG20-28

Single Package Rooftop Units

Electric Cooling/Gas Heating with

Electromechanical Controls and PURON® (R-410A) Refrigerant

Installation,

CONTENTS

Page

SAFETY CONSIDERATIONS .......................... 1,2

INSTALLATION ...................................... 2-17

Step 1 -- Provide Unit Support ......................... 2

• ROOF CURB

• ALTERNATE UNIT SUPPORT

• SLAB MOUNT

Step 2 -- Remove Shipping Rails ....................... 2

Step 3 -- Rig and Place Unit ............................ 2

• POSITIONING

• ROOF MOUNT

• INSTALLATION ONTO CURB

Step 4 -- Field Fabricate Ductwork ..................... 9

Step 5 -- Make Unit Duct Connections .................. 9

• VERTICAL CONFIGURATION

• HORIZONTAL APPLICATIONS

Step 6 -- Install Flue Hood and Inlet Hood ............ 10

Step 7 -- Trap Condensate Drain ..................... 10

Step 8 -- Install Gas Piping ........................... l0

Step 9 -- Make Electrical Connections ................. I I

• FIELD POWER SUPPLY

• FIELD CONTROL WIRING

Step 10 -- Install Outdoor-Air Hood ................... 12

• MANUAL DAMPER ASSEMBLY

Step 11 -- Position Optional Power

Exhaust or Barometric Relief Damper Hood ......... 16

Step 12 -- Non-Fused Disconnect .................... 16

Step 13 -- Install All Accessories ..................... 16

PRE-START-UP ....................................... 18

START-UP ........................................... 18-45

Unit Preparation ...................................... 18

Compressor Mounting ................................ 18

Refrigerant Service Ports ............................. 18

Crankcase Heater(s) .................................. 18

Compressor Rotation ................................. 18

Internal Wiring ........................................ 18

Subcooler Heat Exchanger (SHX) ..................... 18

Evaporator Fan ....................................... 18

Condenser Fans and Motors .......................... 19

Return-Air Filters ..................................... 19

Outdoor-Air Inlet Screens ............................. 19

Gas Heat .............................................. 19

Optional EconoMi$er IV ............................... 39

Operating Sequence .................................. 44

SERVICE ............................................ 4(,-57

Cleaning .............................................. 46

Lubrication ........................................... 4"7

Manual Outdoor Air Damper .......................... 48

Economizer Adjustment .............................. 48

Evaporator Fan Service and Replacement ............ 48

Evaporator Fan Performance Adjustment ............. 48

Evaporator Fan Belt Tension Adjustment ............. 48

Condenser Fan Adjustment ........................... 49

Verify Sensor Performance ........................... 49

Economizer Operation During Power Failure .......... 49

Evacuation ........................................... 49

Refrigerant Charge ................................... 50

Gas Valve Adjustment ................................ 50

High Altitude .......................................... 51

Main Burners ......................................... 51

Filter Drier ............................................ 52

Protective Devices .................................... 52

Relief Devices ........................................ 52

Start-Up and Service Instructions

Page

Control Circuit, 24-V .................................. 52

Replacement Parts .................................... 52

Diagnostic LEDs ...................................... 52

TROUBLESHOOTING .............................. 57-61

Unit Troubleshooting .................................. 57

EconoMi$er IV Troubleshooting ....................... 60

Phase Loss Protection ................................ 61

UNIT START-UP CHECKLIST ........................ CL-I

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can

be hazardous due to system pressure and electrical compo-

nents. Only trained and qualified service personnel should

install, repair, or service ai>conditioning equipment.

Untrained personnel can perform the basic maintenance

functions of cleaning coils and filters and replacing filters. All

other operations should be perforlned by trained service per-

sonnel. When working on air-conditioning equipment, observe

precautions in the literature, tags and labels attached to the unit,

and other safety precautions that may apply.

Follow all safety codes. Wear safety glasses and work

gloves. Use quenching cloth for unbrazing operations. Have

fire extinguishers available for all brazing operations.

Before performing service or maintenance operations on

unit, turn off main power switch to unit. Electrical shock

could cause personal injury.

Puron (R-410A) refrigerant systems operate at higher pres-

sures than stan&trd R-22 systems. Do not use R-22 service

equipment or components on Puron refrigerant equipment.

If service equipment is not rated for Puron tefiigemnt,

equipment dmnage or personal injury may result.

1. [mproper installation, adjustment, alteration, service,

or maintenance can cause property &tmage, personal

injury, or loss of life. Refer to the User's Information

Manual provided with this unit for mote details.

2. Do not store or use gasoline or other flammable

vapors and liquids in the vicinity of this or any other

appliance.

What to do if you smell gas:

1. DO NOT try to light any appliance.

2. DO NOT touch any electrical switch, or use any

phone in your building.

3. IMMEDIATELY call your gas supplier from a neigh-

bor's phone. Follow the gas supplier's instructions.

4. If you cannot reach your gas supplier, c_dl the fire

department.

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

PC 111 Catalog No. 534-80211 Printed in U,S.A. Form 48PG-10SI Pg 1 9-05 Replaces: New

Disconnect gas piping from unit when pressure testing at

pressure greater than 0.5 psig. Pressures greater than

0.5 psig will cause gas valve dmnage resulting in hazardous

condition. If gas valve is subjected to pressure greater than

0.5 psig, it must be replaced before use. When pressure

testing lield-supplied gas piping at pressures of 0.5 psig or

less, a unit connected to such piping must be isolated by

closing the manual gas valve(s).

IMPORTANT: Units have high ambient operating limits. If ]

limits are exceeded, the units will automatically lock the I

compressor out of operation. Manual reset will be required

to restart the compresso]:

INSTALLATION

Step 1 -- Provide Unit Support

ROOF CURB -- Assemble or install accessory roof curb in

accor&mce with instructions shipped with this accessory. See

Fig. 1. Install insulation, cant strips, roofing, and counter flash-

ing as shown. DuctwoN can be installed to roof curb before

unit is set in place. Ductwork must be attached to curb and not

to the unit. Curb must be level. This is necessary to permit unit

drain to function properly. Unit leveling tolerance is _+1/1(_in.

per line,u ft in any direction. Refer to Accessory Roof Curb [n-

st_dlation Instructions for additional information as required.

When accesso qroof curb is used, unit may be installed on

class A, B, or C roof covering material. Carrier roof curb acces-

sories are for flat roofs or slab mounting.

IMPORTANT: The gasketing of the unit to the roof curb is

critical for a watertight seal. Install gasket with the roof

curb as shown in Fig. 1. hnproperly applied gasket cml also

result in air leaks and poor unit performance. Do not slide

unit to position on roof curb.

ALTERNATE UNIT SUPPORT- When a curb cannot be

used, install unit on a noncombustible surface. Support unit

with sleepe].s, using unit curb support area. If sleepers cannot

be used, support long sides of unit with a minimum of 3 equal-

ly spaced 4-in. x 4-in. pads on each side.

SLAB MOUNT (Horizontal Units Only) -- Provide a level

concrete slab that extends a minimum of 6 in. beyond unit cab-

inet. Install a gravel apron in front of condenser coil zdr inlet to

prevent grass and foliage from obstructing airflow.

NOTE: Horizontal units may be installed on a roof curb if

required.

Step 2 -- Remove Shipping Rails -- Remove ship-

ping rails prior to lowering unit onto roof curb. See Fig. 2. The

rails are attached to the unit at both the return end and condens-

er end. Remove the screws from both ends of each rail. Be

cmeful not to drop the rails onto gray surface that could be

dmnaged. Disc¢ud the rails. It is important to replace the screws

into the unit to avoid any air or water leakage.

Step 3 -- Rig and Place Unit -- Inspect unit for trans-

portation &_mage. See Tables 1-3 for physical data. File any

chfim with transportation agency.

All panels must be in place when rigging. Unit is not

designed for handling by fork truck. Dmnage to unit may

result.

Do not diop unit; keep upright. Use spreader ba].s over unit

to prevent sling or cable damage. Rollers may be used to move

unit across a roof. Level by using unit frmne as a reference;

leveling tolerance is _+1/1_in. per line,u" ft in troy direction. See

Fig. 3 for additional information. Unit rigging weight is shown

in Fig. 3.

Four lifting holes m'e provided in the unit base mils as

shown in Fig. 3. Refer to rigging instructions on unit.

POSITIONING -- Maintain clearance, per Fig. 4, around and

above unit to provide minimum distance from combustible

materials, proper _firflow, and service access.

Do not inst_fll unit in an indoor location. Do not locate air

inlets near exhaust vents or other sources of contaminated ai]:

For proper unit operation, adequate combustion and ventilation

air must be provided in accordance with Section 5.3 (Air for

Combustion and Ventilation) of the Natiomd Fuel Gas Code,

ANSI Z223.1 (American National Standmds Institute).

Although unit is weatherproof, guard against water from

higher level runoff and overhangs.

Ix>cate mechanical di'aft system flue assembly at least 4 ft

from any opening through which combustion products could

enter the building, and at least 4 ft flom any adjacent building

(or per local codes). When unit is located adjacent to public

w_dkways, flue assembly must be at least 7 ft above grade.

ROOF MOUNT -- Check building codes for weight distribu-

tion requirements. Unit operating weight is shown in Table 1.

INSTALLATION ONTO CURB -- The 48PG units m'e de-

signed to lit on either the accessory full perimeter curb. Correct

placement of the unit onto the curb is critical to operating per-

formance. To aid in correct positioning, 3/s-in. diameter locat-

ing holes have been added to the unit base rails. When placing

the unit, these holes should line up with the roof curb edge as

shown in Fig. 5 and 6, to assure proper duct opening alignment.

For placement on the roof curb, use the alignment holes located

approximately 2-in. from the end of the base rail on the return

end of the unit. See labels on the side of the unit for more

details.

Do not slide unit to position it when it is sitting on the curb.

Curb gasketing material may be &tmaged and leaks may

result.

Do not allow the shipping rail to drop on the ]'(>ofsurface.

Dmnage to the ]'(>ofsurface may result.

iROOFSS_SAS_E_ORY_T _S_,E_T_ONS S

i CRRFCUR_OIBCeO 9B_/iB_

_290_)

CRRECYRBOlgC_O iSgDBi

FRONT

NOT[S:

I, ROOFCUR8 ACCESSORY IS SH|PP[O OISASS[MBL[D.

?. OI#ENSION$ IN 1) ARE IN UlLLIMET[R$.

3. _OIRECTION OF AIRFLOW.

4. ROOF CURS: 16 6A. {VA03-56) ST[EL

5, TO PREV[NT THE HAZARD OF STAGNANT WAT[R 8UILO*UP IN TH[ UNIT

DO NOT £XC[[D CUR8 L[VELING TOL[RANCES.

6. CLEARANC[ fi[TWE[I_ UNIT 8AS[ RAIL AND CURB FLAN6[ IS t/4-1N. (6 MM)

ON [ACH SIOE, __SAS RAIL OF UN !

-ROOFC RB

ALIGNMENT SOLE\

IN BASSRAIL OF U_IT

MAX CURB L VEL]NG TOLERANC S:

ROOCBRS SG , :::;G IN ::

CRRFCURgOISC_O

ERRFCURgO 9C00 28

BACK [NO

_GASKE[

i (S_PPLIEB WITS

CUR_) R£_RN

_ _ND

COUNTER FLASHING

ROOFING FELi_

{FILL9 SBPPL_Eg)

CANT STRIP_

(FIELS SUPPLIEO)

_RIGIO INSULATION

(FIELD SUPPL_EO)

9 S/6 '=

(5S0)

VIEW"A-A"

IN[

OPSN NGS

SUPPLY AiR

Fig. 1 -- Roof Curb Details

SHIPPING

Fig. 2 -- Shipping Rail Removal

CAUTION NOTICE TO RIGGERS:

ALL PANELS MUST BE IN PLACE WHENRIGGING.

NOTICE TO RIGGERS: Rig by inserting hooks into unit base rails as shown. Maintain a distance of

120 inches (3048 MM) from top of unit to eyehook. Leave coil cover attached to unit whilerigging to

protect coil of unit from damage.

PG28 4300 70.5 37.0 35.2 .%

DOES NOT INCLUDE ERV ( ENERGY RECOVERY VENTILATOF OPTION. /j_

/ / x/ o o i

_ OT !$1250ii_( r68niktgi)fOartidO?moeStriC_ra_irt_g" _'_'_

Fig. 3 -- Rigging Details

ROTES:

l FOR OUTDOOR USE ONLY

? WEIGHTS SHOWN ARE FOR 48PG CLOW REA[I UNIT

WiTH MANUAL ?5% OUTDOOR AIR OPTION, ALUMIND_ COILS,

AND STANDARD DRIVE FOR WEIGHTS OF OPTIONAL

EQUIPMENT CONSULT PRODUCT DATA BOOK

3 DO NOT LOCATE ADJACENT UNITS WITH FLUE

DISCHARGE FACING ECONOMIZER INLET¸

NIN CLEARANCES TO _E

RIGHT SIDE ; 6'0 = [1829] CONDENSER AIR

LEFf SIDE : 10'0" I304D] OUTSIDE AIR

FRONT SIDE ; 3'0 .[915] SEVICE

• 6' D" 11829] CONDENSER AIR

• 8' D" 12438] COIL RE_OVAL

REAR SIDE : 6' D" liB?9] CONDENSER AIR

• 6'6 .i_981] ECONOMIZER REMOVAL

iUNIT SIZE

48PG20

48PG24

48PG28

OPERATING i

_EIGRT LOWl

GAS (4SPUD]

LR [KGIi

2480

[11P51

3588

[I_74]

2173

[125C1

UNIT I UNIT I UNIT UNIT I

FiE HT LENGTH LENGTH LENGTH CENPER OF GRAVITY LOCATION CORNER WEIGHT

E F G X Y Z LB [KG]

57_3/4 13DI/1U _! 696 [ 354 296 6824 7855 4721 5420

H467] [33D4] } 11768] I [8991 [7521 {31D] [3551 {214] 124U]

57-3/4 i196_1/16 i172-[5/1_ 130-1/161 725 i 359 396 6721 843 8 4?5 _ 596 8

H4611 i [49891 i [4392] [3304] t1842] i [9_2] [752] [305] [383] [216] [271]

69_3/4 i 159-1/4 i ]45-3/4 HU-?/1U i U71 i 341 33? 7110 9UD D 4U_ UND 3

11771} I [42981 i [3701] [2957] i 11704] i [8661 [8451 [3SO] [4401 121D] 1_86]

CONNER

TOP 6'0 11829] CONDENSER FAN

80TTO_ : I'D .[356] CO_BUSTIULE S_RFACE {WlO C_RU) IS 511 U

FLUE OUTLET: _' O" 11219] COMBUSTIBLE SURFACES

/UTILITY METERS/REGULATORS/RZLI_ES _390]

_OR S_ALLER SERVICE AND OPERATIONAL CLEARANCES, I_

CONTACT CARRIER APPLICATION ENGINEERING OEPART_ENT T

DOWN S_OT OUCTS DESIGNED TO BE ATTACHED TO ACCESSORY

ROOF CUR_ ONLY¸ IF UNIT IS MOUNTED SIDE S_PPLY, El

IS RECOMMENDED THE U_CIS MUST DE SUPPORIEU DY 41 - 5/8

CROSS CRACES AS DONE ON ACCESSORY RO0_ CUR_ _IOG?]

DIMENSIONS A E IN I CHES _E[G_TS AND OIMENSIONSIN [ ]ARE i_ ARM _R

T R A D 0 E IC

ILLI_E ERS 0 KILOGR MS RELIEF HOOD/

_JTH THE EXCEPTION OF CLEARANCE FOR IHE CONDENSER COIL POWER EXHAUST

AND THE UAMPER/PO_ER EXHAUST AS S_ATEU IN NO_E _3, A ]

REMOVABLE FENCE OR BARRICADE REQUIRES NO CLEARANCE L

DIZENS]ORS ARE FROM OUTSIDE OF BASE RAIL¸

ALLO_ _- 5116 [8] O_ EACH SIDE FOR TOP COVER DRIP EDGE¸

'_DImDIRECTiON OF AIRFLOW

_ CENTER OF GRAV]IY 4

[lOUl

_ S" KO [?_l J

S (T_RU THE CURB POWER}

I?61 J

i-S/4" KO [441

4 MI_ {THRU T_E CURB POWER)

1102] 7/8" KO 144] j

{THRU THE CURB CONTROL}

3/4 =` DRA[ 5 L._

PIPE H21[

Do P3 3/16

IO1 1589]

OUTSIDE

_ASERA[L

l' I

ss- 7Is I I

-- I I

!_1 / I I

LI, _ _½

[595]

'r [

, -WL:o:

L3511 _ [25

1841 gl 61/1_

_2- 5/8 [1541

[67i X

D523L SLAPIPLY

4"15/16

[38D]

L___U

_INSICE BASE RAIL

MOTOR

CONDERSATE ACCESS_ [751} ACCESS PANEL

[]

783/4 RETURN

[1301 AIR

_---2D- 3/4 ;_

I?3o] I_

I DUCT FLANGE

--5"i/4

[1341

[$49] NPT

DRAIN CONNECTION

liB?} 9/1D_

CORNER [1208]

BSECPIONAA

SCALE 3:40

*DUCT SIZE

3-118

[79]

t_ _ P" 4314 OUTSIDE AIR HOOO_ [

i 121 [HOOD E ELD NGTALLEG " " i_]_

:- - z• : ..... - - , .................. . , -

72_IIU :627 CONTROL_OX/ e_ILIER " 'H:NG[U)

It t &IJ ........"II....l:;,. us /II

[572} COMPR S OR ACCESS 62- 6 E: --XHA T

I _ ....., , , , , , d" l.J 3- 3141 r, , I _l [HINGED} IIiHING[D_ ,11976"_/41191 _ ..... * !• I I_IF_VI

r.--_ . .. P __-L,.,I , [,D._,_\/,,;DISH.°.s.co.

|-- J L---_!T'.'?_. 'iN_]_/1;.': I,!'i I ,ii _, _......_.!]_ ;.: ._./ :O.E{.O,_"l_t

U _ /U L/ _'" _. _ _-ua ._.... _._...... 'oa'-'_ __1-1

_S- 3 4 , _ , / _ ! AIR ". AIR I i {06_

_,,5, 'oo"'"_']/I /I/!. _?u.,. .,D,,,6"]_ G _ ' q _oAs' -o,

3 DIA _Oi[ I _ HEAT SECT ON_ [199U] R 9/16 ]CON_ECTION

O O AC _AN : i

,/ io,, !fcEss,E. €.o,,, !

i 79- 1/8 _ HUV Gr _ CONV_ 6 W8 V_/_ I_T _" 86518

[2OIO] BAROMETRIC RELIEF HOOCI _ OUTLET {O;T]ON) 1 [1561 CONNECTION _4q/4 [2199]

POWEREXHAUSt i_oB] RIGHT

OPERATING POSITION NON FUSED DISCONNECT _ F_

LEFT (OPTION1 HANDLE IOPTION/FIZLD I_

I_SIALLZD)

Fig. 4 -- Base Unit Dimensions

Table 1 -- Physical Data

UNIT 48PG 20 24 28

VOLTAGE 208/230 and 460 575 208/230 and 460 575 208/230 and 460 575

NOMINAL CAPACITY (Tons) 18 18 20 20 25 25

OPERATING WEIGHT (Ib)

48 Series (Low Heat) AI/AI* 2480 2480 2588 2588 2773 2773

COMPRESSOR Fully Hermetic Scroll

ouan,,, i i i

Number of Refrigerant Circuits 22 2222

OII (ounces) Comp A1, A2, B1 85, NA, 85 85, NA, 85 85, NA, 85 85, NA, 85 85, 85, 85 85, 85, 85

REFRIGERANT TYPE Puror'_ Refrigerant (R-410A)

Expansion Device TXV TXV TXV TXV TXV TXV

Change Type

Operating Charge (Ib)

Circuit A 25.3 25.3 35.7 35.7 49.3 49.3

Circuit B 25.3 25.3 33.5 33.5 24.3 24.3

REFRIGERANT SUBCOOLER

Heat Exchanger Size B15Hx26x26 B15Hx26x26 B15Hx26x26 B15Hx26x26 B15Hx26x36 B15Hx26x36

Expansion Device TXV TXV TXV TXV TXV TXV

CONDENSER COIL Enhanced Copper Tubes, Aluminum Lanced Fins

Rows...Flns/Inch 2...17 2...17 3...17 3...17 3...17 3...17

Quantity 22 3333

Length of Tube Sheets (in.) 80.3 80.3 80.3 80.3 80.3 80.3

Width (in.) 60 60 60 60 60 60

Total Face area (sq. it) 33.46 33.46 33.46 33.46 33.46 33.46

CONDENSER FAN Propeller

.om,na,Om,,o,a,.,,an., .0001 1000 10001 1000 ,000

Quantgy...Dlameter (in.) 4...22 4...22 6...22 6...22 6...22 6...22

Motor Hp...Rpm 1/4...1100 1/4...1100 1/4...1100 V4...1100 V4...1100 V4...1100

Waits Input (Total) 1400 1400 2100 2100 2100 2100

EVAPORATOR COIL Enhanced Copper Tubes, Face Split, Aluminum Double-Wavy Fins

Rows...Flns/Inch 4...15 4...15 I 4...15 4...15 I 4...15 4...15

Length of Tube Sheets (In.) 69.4 69.4 I 69.4 69.4 I 69.4 69.4

Width (In.) 48 48 48 48 60 60

Total Face area (sq it) 23.13 23.13 23.13 23.13 28.92 28.92

EVAPORATOR FAN Centrifugal, Belt Type

Quantgy...SIze (in.) 2...15 x 11 2...15 x 11 2...15 x 11 2...15 x 11 2...15 x 11 2...15 x 11

Belt Belt Belt Belt Belt Belt

7000 7000 8000 8000 10,000 10,000

Ball Ball Ball Ball Ball Ball

1400 1400 1400 1400 1400 1400

Vertical

Type Drive

Nominal Cfm

Motor Bearing Type

Maximum Allowable Fan Rpm

FURNACE SECTION

Rollout Switch Cutout Temp (F)

Burner Orifice Diameter (in....drill size)

Gas

Thermostat Heat Anticipator Setting

Stage 1 (amps)

Stage 2 (amps)

Gas Input (Btuh) HIGH HEAT Stage 1

Stage 2

VerUcal

Efficiency (Steady State) %

Temperature Rise Range

Gas Input (Btuh) MEDIUM HEAT Stage 1

Stage 2

Efficiency (Steady State) %Vertical

Temperature Rise Range

Gas Input (Btuh) LOW HEAT Stage 1

Stage 2

Efficiency (Steady State) %Vertical

Temperature Rise Range

Manifold Pressure

Natural Gas (in. wg) VerUcal

Natural Gas (in. wg) Horizontal

Gas Valve Quantity

Gas Valve Pressure Range (in. wg)

MIn-Max Allowable (pslg)

Field Gas Connection Size (In...FPT)

HIGH-PRESSURE SWITCHES (pelg)

Cutout

Reset (Auto)

OUTDOOR AIR INLET SCREENS

Ouantlty...Slze (in.)

RETURN-AIR FILTERS

Quantgy...Slze {In.)

LEGEND

TXV -- Thermostatic Expansion Valve

225

0.13629

Natural

0.98

0.44

317,000

400,000

25-55

281,000

365,000

25-55

199,000

250,000

15-45

3.00

2.95

5.5-13.0

.235-.469

3/4

225

0.13629

Natu_l

0.98

0.44

317,000

400,000

25-55

281,000

365,000

25-55

199,000

250,000

15-45

3.00

2.95

5.5-13.0

.235-.469

3/4

225

0.13629

Natural

0.98

0.44

317,000

400,000

25-55

281,000

365,000

25-55

199,000

250,000

15-45

3.00

2.95

5.5-13.0

.235-.469

225

0.13629

Natu_l

0.98

0.44

317,000

400,000

25-55

281,000

365,000

25-55

199,000

250,000

15-45

3.00

2.95

5.5-13.0

.235-.469

225

0.13629

Natural

0.98

0.44

317,000

400,000

25-55

281,000

365,000

25-55

199,000

250,000

15-45

3.00

2.95

5.5-13.0

.235-.469

225

0.13629

Natural

*Aluminum evaporator coil/aluminum condenser coil.

0.98

0.44

317,000

400,000

25-55

281,000

365,000

25-55

199,000

250,000

15-45

3.00

2.95

5.5-13.0

.235-.469

3/4

630 ± 10 630 ± 10 630 ± 10 630 ± 10 630 ± 10 630 ± 10

505 ± 20 505 ± 20 505 ± 20 505 ± 20 505 ± 20 505 ± 20

3...20 x 25 3...20 x 25 3...20 x 25 3...20 x 25 3...20 x 25 3...20 x 25

9...16 x 25 x 2 9...16 x 25 x 2 9...16 x 25 x 2 9...16 x 25 x 2 9...20 x 25 x 2 9...20 x 25 x 2

Table 2 -- Fan Motor and Drive Data -- Vertical Supply/Return

48PG

LOW RANGE

Motor Hp

Motor Nominal Rpm

Maximum Continuous Bhp

Maximum Continuous Watts

Motor Frame Size

Motor Shaft Diameter (in.)

Fan Rpm Range

Motor Pulley Min, Pitch Diameter (in.)

Motor Pulley Max, Pitch Diameter (in,)

Blower Pulley Pitch Diameter (in.)

Blower Pulley Shaft Diameter (in.)

Blower Pulley Type

208/230 and 460 575

3.7

1750

4.26

3174

56HZ

685-939

2.7

3.7

6.8

13/16

Fixed

1750

5.75

4290

$184T

11&

751-954

3,7

4,7

8,6

13/16

Fixed

208/230 and 460

3.7

1750

4.26

3174

56HZ

7/s

685-939

2.7

3.7

6.8

13/16

Fixed

575

1750

5.75

4290

S184T

l_&

751-954

3.7

4.7

8.6

13/16

Fixed

208/230 and 460

1750

5.75

4290

$184T

687-873

3.7

4.7

9.4

13/16

Fixed

Pulley Center Line Distance (in.)

Belt, Quantity...Type...Length (in.)

Speed Change Per Turn -- Moveable Pulley (rpm)

Moveable Pulley Maximum Full Turns

Factory Speed Setting (rpm)

MID-LOW RANGE

Motor Hp

Motor Nominal Rpm

Maximum Continuous Bhp

Maximum Continuous Watts

Motor Frame Size

Motor Shaft Diameter (in.)

Fan Rpm Range

Motor Pulley Min. Pitch Diameter (in.)

Motor Pulley Max. Pitch Diameter (in.)

Blower Pulley Pitch Diameter (in.)

Blower Pulley Shaft Diameter (in.)

Blower Pulley Type

Pulley Center Line Distance (in.)

Belt, Quantity...Type...Length (in.)

11.293-13.544

1...BX38...39.8

812

1750

5.75

4290

S184T

11&

949-1206

3.7

4.7

6.8

13/16

Fixed

9.81-13.055

1...BX38...39.8

9,81-13,055

1 -.BX40-,41.8

853

1750

5.75

4290

$184T

949-1206

3.7

4.7

6.8

13/16

Fixed

9.81-13.055

1...BX38_.39.8

11.293-13.544

1-.BX38...39.8

812

1750

5.75

4290

$184T

949-1206

3.7

4.7

6.8

13/16

Fixed

9.81-13.055

1_.BX38._39.8

9.81-13.055

1._BX40...41.8

853

1750

5.75

4290

S184T

l_&

949-1206

3.7

4.7

6.8

13/16

Fixed

9.81-13.055

1...BX38...39.8

9.81-13.055

1_.BX41 _.42.8

780

Speed Change Per Turn -- Moveable Pulley (rpm)

Moveable Pulley Maximum Full Turns

Factory Speed Setting (rpm)

MID-HIGH RANGE

Motor Hp

Motor Nominal Rpm

Maximum Continuous Bhp

Maximum Continuous Watts

Motor Frame Size

Motor Shaft Diameter (in.)

Fan Rpm Range

Motor Pulley Min, Pitch Diameter (in.)

Motor Pulley Max. Pitch Diameter (in,)

Blower Pulley Pitch Diameter (in.)

Blower Pulley Shaft Diameter (in.)

Blower Pulley Type

Pulley Center Line Distance (in.)

Belt, Quantity...Type..,Length (in.)

1078

7.5

1750

8.63

6434

S213T

13/8

941-1176

4,8

6,0

8.9

13/16

Fixed

1078

7.5

1750

8.63

6434

$213T

13&

941-1176

4.8

6.0

8.9

13/16

Fixed

1178

7.5

1750

8.63

6434

$213T

13/8

941-1176

4.8

6.0

8.9

1_16

Fixed

1078

7.5

1750

8.63

6434

$213T

13&

941-1176

4.8

6.0

8.9

13/16

Fixed

9.025-12.179 9.025-12.179 9.025-12.179 9.025-12.179

1...BX42...43.8 1-.BX42-.43.8 1...BX42.-43.8 1-.BX42...43.8

1750

5.75

4290

$184T

l_&

805-1007

4.8

10.4

1_16

Fixed

9.81-13.055

1_.BX45...46.8

906

7.5

1750

8.63

6434

$213T

13/8

941-1176

4.8

6.0

8.9

13/16

Fixed

9.025-12.179

1...BX42...43.8

Speed Change Per Turn --

Moveable Pulley (rpm)

Moveable Pulley Maximum Full Turns

Factory Speed Setting (rpm)

HIGH RANGE

Motor Hp

Motor Nominal Rpm

Maximum Continuous Bhp

Maximum Continuous Watts

Motor Frame Size

Motor Shaft Diameter (in.)

Fan Rpm Range

Motor Pulley Min. Pitch Diameter (in.)

Motor Pulley Max, Pitch Diameter (in,)

Blower Pulley Pitch Diameter (in.)

Blower Pulley Shaft Diameter (in.)

Blower Pulley Type

Pulley Center Line Distance (in.)

Bell Quantity...Type._Length (in.)

Speed Change Per Turn -- Moveable Pulley (rpm)

Moveable Pulley Maximum Full Turns

Factory Speed Setting (rpm)

1059

1750

11.50

8579

$215T

13/8

1014-1297

4.3

5.5

7.4

13/16

Fixed

9.025-12.179

2-.BX38-.39.8

1156

1059

1750

11.50

8579

$215T

13/8

1014-1297

4.3

5.5

7.4

13/16

Fixed

9.025-12.179

2...BX38...39.8

1156

1059

1750

11.50

8579

$215T

13/8

1014-1297

4.3

5.5

7.4

13/16

Fixed

9.025-12.179

2_.BX38._39.8

1156

1059

1750

11.50

8579

$215T

13/s

1014-1297

4.3

5.5

7.4

13/16

Fixed

9.025-12.179

2...BX38...39.8

1156

1059

1750

11.50

8579

$215T

13/8

1014-1297

4.3

5.5

7.4

13/16

Fixed

9.025-12.179

2...BX38..39.8

1156

575

1750

5.75

4290

S184T

11/8

687-873

3.7

4.7

9.4

13/16

Fixed

9.81-13.055

1...BX41...42.8

780

1750

5.75

4290

S184T

11/8

805-1007

4.8

10.4

13/16

Fixed

9.81-13.055

1...BX45...46.8

906

7.5

1750

8.63

6434

$213T

13&

941-1176

4.8

6.0

8.9

13/16

Fixed

9.025-12.179

1_.BX42...43.8

1059

1750

11.50

8579

$215T

1014-1297

4.3

5.5

7.4

13/16

Fixed

9.025-12.179

2_.BX38...39.8

1156

Table 3 -- Fan Motor and Drive Data -- Horizontal Supply/Return

48PG

LOW RANGE

Motor Hp

Motor Nominal Rpm

Maximum Continuous Bhp

Maximum Continuous Watts

Motor Frame Size

Motor Shaft Diameter (in,)

Fan Rpm Range

Motor Pulley Min, Pitch Diameter (in.)

Motor Pulley Max. Pitch Diameter (in,)

Blower Pulley Pitch Diameter (in.)

Blower Pulley Shaft Diameter (in.)

Blower Pulley Type

Pulley Center Line Distance (in,)

208/230 and 460 575

208/230 and 460

1750

5,75

4290

S184T

687-873

3,7

4,7

9.4

13/16

Fixed

9,81-13.055

Belt, Quantity...Type,..Length (in.)

Speed Change Per Turn --

Moveable Pulley (rpm)

Moveable Pulley Maximum Full Turns

Factory Speed Setting (rpm)

MID-LOW RANGE

Motor Hp

Motor Nominal Rpm

Maximum Continuous Bhp

Maximum Continuous Watts

Motor Frame Size

Motor Shaft Diameter (in,)

Fan Rpm Range

Motor Pulley Min, Pitch Diameter (in.)

Motor Pulley Max. Pitch Diameter (in,)

Blower Pulley Pitch Diameter (in.)

Blower Pulley Shaft Diameter (in.)

Blower Pulley Type

Pulley Center Line Distance (in,)

Belt, Quantity...Type,..Length (in.)

Speed Change Per Turn --

Moveable Pulley (rpm)

Moveable Pulley Maximum Full Turns

Factory Speed Setting (rpm)

MID-HIGH RANGE

Motor Hp

Motor Nominal Rpm

Maximum Continuous Bhp

Maximum Continuous Watts

Motor Frame Size

Motor Shaft Diameter (in,)

Fan Rpm Range

Motor Pulley Min. Pitch Diameter (in.)

Motor Pulley Max. Pitch Diameter (in,)

Blower Pulley Pitch Diameter (in.)

Blower Pulley Shaft Diameter (in,)

Blower Pulley Type

Pulley Center Line Distance (in.)

Belt, Quantity...Type...Length (in.)

3,7

1750

4.26

3174

56HZ

7/8

896-1227

2.7

3,7

5,2

13/16

Fixed

11,293-13.544

1_.BX35._36.8

1062

1750

5.75

4290

$184T

1V8

1113-1414

3,7

4,7

5,8

13/16

Fixed

9,81-13,055

1...BX35,,,36.8

1750

5.75

4290

S184T

1V8

873-1108

3.7

4.7

7.4

13/16

Fixed

9.81-13.055

1_.BX38_.39.8

991

1750

5.75

4290

S184T

1V8

1113-1414

3.7

4.7

5.8

13/16

Fixed

9.81-13.055

1...BX35...36.8

3,7

1750

4,26

3174

56HZ

7/8

896-1227

2.7

3,7

5.2

13/16

Fixed

11.293-13.544

1._BX35...36,8

1062

1750

5,75

4290

$184T

11/8

1113-1414

3,7

4,7

5,8

13/le

Fixed

9,81-13.055

1.,,BX35,..36,8

1750

5,75

4290

S184T

11/8

873-1108

3,7

4,7

7,4

13/16

Fixed

9,81-13,055

1._BX38.,.39.8

991

1750

5,75

4290

S184T

11/s

1113-1414

3,7

4,7

5,8

13/16

Fixed

9,81-13,055

1,.,BX35,,.36.8

1..,BX41 .,.42.8

78O

1750

5,75

4290

$184T

11/8

805-1007

4.8

6.0

10.4

13/16

Fixed

9,81-13.055

1_,BX45_.46.8

906

7,5

1750

8,63

6434

S213T

13/8

941-1176

4.8

6.0

8.9

13/16

Fixed

9.025-12.179

1,.,BX42.,.43.8

Speed Change Per Turn --

Moveable Pulley (rpm)

Moveable Pulley Maximum Full Turns

Factory Speed Setting (rpm)

HIGH RANGE

Motor Hp

Motor Nominal Rpm

Maximum Continuous Bhp

Maximum Continuous Watts

Motor Frame Size

Motor Shaft Diameter (in.)

Fan Rpm Range

Motor Pulley Min. Pitch Diameter (in.)

Motor Pulley Max. Pitch Diameter (in,)

Blower Pulley Pitch Diameter (in.)

Blower Pulley Shaft Diameter (in,)

Blower Pulley Type

Pulley Center Line Distance (in.)

Belt, Quantity...Type...Length (in.)

Speed Change Per Turn --

Moveable Pulley (rpm)

Moveable Pulley Maximum Full Turns

Factory Speed Setting (rpm)

1264

7,5

1750

8.63

6434

$213T

1096-1339

5,4

6,6

8,6

13/16

Fixed

9.025-12,179

1...BX42,..43.8

1218

1264

7.5

1750

8.63

6434

S213T

13&

1096-1339

5,4

6.6

8.6

13/16

Fixed

9.028-12.179

1...BX42...43.8

1218

1264

7,5

1750

8.63

6434

$213T

13/s

1096-1339

5,4

6,6

8,6

13/le

Fixed

9,025-12.179

1.,.BX42,..43,8

1218

1264

7,5

1750

8.63

6434

S213T

1096-1339

5,4

6,6

8,6

13/16

Fixed

9,025-12.179

1,..BX42,..43.8

1218

1059

175 o

11.5o

8579

S215T

1014-1297

4,3

5,5

7,4

13/16

Fixed

9.028-12.179

1,..BX38.,.39.8

1156

575

1750

5,75

4290

S184T

11/s

687-873

3.7

4.7

9.4

13/16

Fixed

9.81-13.055

1_,BX41 ...42,8

78O

1750

5,75

4290

S184T

11/8

805-1007

4.8

6.0

10.4

13/16

Fixed

9.81-13.055

1..,BX45...46,8

906

7.5

1750

8,63

6434

S213T

941-1176

4.8

6.0

8.9

Fixed

9,025-12.179

1,.,BX42...43,8

1059

175o

11.5o

8579

S215T

13/s

1014-1297

4.3

5.5

7.4

13/16

Fixed

9,025-12.179

1,..BX38...39,8

1156

ALIGNMENT

HOLE

(IN BASE RAIL)

EDGE FLANGE/;q

Fig. 5 -- Alignment Hole Details

ALIGNMENT

HOLESHOULD

LINE UP WITH

ROOFCURB

EDGE FLANGE

ALIGNMENT

HOLES FOR

CURB-BOTH

SIDES

RETURN SUPPLY _/

OPENING OPENING

CURB I_CURB[_

RETURN SUPPLY I

OPENING OPENIN_,,.--

ROOF CURB

Fig. 6 -- Alignment Hole Location

Step 4 -- Field Fabricate Ductwork -- On venical

units, secure all ducts to roof curb and building structure. Do

not connect ductwork to unit. For horizontal applications, field-

supplied flanges should be attached to horizontal discharge

openings and all ductwork secured to the flanges. Insulate and

weatherproof all external ductwork, joints, and roof openings

with counter flashing and mastic in accordance with applicable

codes.

Ducts passing through an unconditioned space must be

insulated and covered with a vapor barriel:

If a plenum return is used on a vertic_fl unit, the return

should be ducted through the roof deck to comply with applica-

ble fire codes.

A minimum clearance is not required around ductwork.

Cabinet return-air static shall not exceed -0.35 in. wg with

economizer or 0.45 in. wg without economizel:

These units are designed for a minimum continuous return-

air temperature in heating of 50 F (dry bulb), or an intermittent

operation down to 45 F (di'y bulb), such as when used with a

night set-back thermostat.

To operate at lower leturn-air temperatures, a field-supplied

outdoor-air temperature control must be used to initiate both

stages of heat when the temperature is below 45 E Indoor com-

folt may be compromised when these lower air temperatures

are used with insufficient heating temperature dse.

Step 5 -- Make Unit Duct Connections

VERTICAL CONFIGURATION -- Unit is shipped for ver-

tical supply and return duct connections. Ductwork openings

are shown in Fig. 1 and 4. Duct connections for vertical

configuration are shown in Fig. 7. Field-fabricated concentric

ductwork may be connected as shown in Fig. 8 and 9. The unit

is designed to attach the ductwork to the roof curb. Do not

attach duct directly to the unit.

For vertic'A supply and return units, tools or pmls could

diop into ductwork and cause an injury. Install a 90 degree

turn in the return ductwork between the unit and the condi-

tioned space. If a 90 degree elbow cannot be installed, then

a grille of sufficient strength and density should be installed

to prevent objects fiom ftdling into the conditioned space.

HORIZONTAL APPLICATIONS -- Horizontal units are

shipped with outer panels that _dlow for side by side horizontal

duct connections. If specified during ordering, the unit will be

shipped with the vertical duct openings blocked off from the

factory, ready for side supply installation. If the horizontal

supplyheturn option was not specified at time of ordering the

unit, a field-installed accessory kit is requiled to convert the

vertical unit into a horizontal supply configuration.

Installation of the duct block-off covers should be complet-

ed prior to placing the unit unless sufficient side cletu'ance is

available. A minimum of 66 in. is required between the unit

and any obstruction to install the duct block-off covers. Side

supply duct dimensions and locations tue shown on Fig. 4.

Install ductwork to horizontal duct flange connections on side

of unit.

ECONOMIZER

\ HEAT

SEE EXCHANGER

NOTE

I R@ AIR

'V" OUT

NOTE: Do not drill in this area; damage to basepan may result in

water leak.

Fig. 7 -- Air Distribution -- Vertical Supply/Return

ECONOMIZER

SEE SEE HEAT

EXCHANGER

_OTE

AIR OUT AIR IN AIR OUT

NOTE: Do not drill in this area; damage to basepan may result in

water leak.

Fig. 8 -- Air Distribution -- Concentric Duct

BAFFLE

NOTE: Dimensions A, A', B, and B' are obtainedfrom field-supplied

ceiling diffuser.

;, Shaded areas indicate block-off pans.

Fig. 9 -- Concentric Duct Details

Step 6 -- Install Flue Hood and Inlet Hood --

Flue hood (smaller hood), inlet hood (larger hood), _mdscreens

are shipped inside the unit in the fan section. To install, remove

the heat panel. Tile flue hood is attached to the heat section

panel from the outside using file screws provided. See Fig. 10.

The inlet hood is installed by inserting the hood through the

back of the heat panel. Attach the hood by inserting the screws

provided through the clearance holes in the heat panel and into

the intake hood.

Inst_dl the screens into both hoods using the screws and re-

taining nuts provided with the unit.

Attach the cover of the obserwttion hole on the intake hood

and then replace the heat panel onto the unit to complete the in-

st_dlation.

NOTE: When properly installed, the flue hood will line up

with the combustion fan housing. See Fig. 11.

Step 7 -- Trap Condensate Drain -- See Fig. 12

for drain location. One 3/4-in. half coupling is provided outside

unit evaporator section for condensate drain connection. A trap

at least 4-in. deep must be used. See Fig. 13.

All units must have an external trap for condensate drain-

age. Install a trap at least 4 in. deep and protect against freeze-

up. If drain line is installed downstremn from the external trap,

pitch the line away from the unit at 1 in. per 10 fl of run. Do not

use a pipe size smaller than the unit connection.

Step 8 -- Install Gas Piping -- Unit is equipped for

use with natural gas. Refer to local building codes, or in the

absence of local codes, to ANSI Z223.1-1atest year and

addendum Z223.1A-latest year entitled NFGC. In Canada,

installation must be in accordance with the CANI .B149.1 and

CAN 1.B 149.2 installation codes for gas burning appliances.

Support gas piping. For example, a 3/4-in. gas pipe must

have one field-fabricated support bemn eve U8 fi. Therefore,

an 18-1l long gas pipe would have a minimum of 3 support

beams.

Install field-supplied manual gas shutoff valve with a l/s-in.

NPT pressure tap for test gage connection at unit. The pressure

tap is located on the gas manifold, adjacent to the gas valve.

Field gas piping must include sediment trap and union. See

Fig. 14.

FLUE HOOD

INLET HOOD

Fig. 10 -- Flue and Inlet Hood Locations

HEAT

EXCHANGER

SECTION

COMBUSTION

FAN HOUSING

INDUCED-DRAFT

MOTOR

MAIN BURNER

-SECTION

Fig. 11 -- Combustion Fan Housing Location

Do not pressme test gas supply while connected to unit.

Always disconnect union before servicing.

IMPORTANT: Natural gas pressure at unit gas connectionmust not be less than 5.5 in. wg or greater than 13.0 in. wg.

Size gas-supply piping for 0.5-in. wg maximum pressure

drop. Do not use supply pipe smaller than unit gas connection.

"DAMPER MOTOR

DRAIN CONNEC ilON [1208[

5-1/4

[132] 1x

SUPPLY RETURN

AIR AIR

Fig. 12- Condensate Drain Details

MINIMUM PITCH

ONE IN. PER

10 FT OF LINE

TO ROOF

DRAIN

SEE

NOTE

,,,I_ROOF

CURB

NOTE: Trap should be deep enough to offset maximum unit static

difference. A 4-in. trap is recommended,

Fig. 13- Condensate Drain Piping Details

UNIT

MANUAL SHUTOFF

(FIELD SUP_ GAS

(118" NPT PLUG)

UNlOgaN _--_ ='-"--- SEDIMENT TRAP

Fig. 14 -- Field Gas Piping

Step 9 -- Make Electrical Connections

FIELD POWER SUPPLY- Unit is factory wired for volt-

age shown on unit nameplate. Be sure to check for conect

voltage.

When installing units, provide disconnect per NEC (Nation-

al Electrical Code) of adequate size (MOCP [Maximum Over-

current protectionl of unit is on the informative plate). See

Tables 4A and 4B. All field wiring must comply with NEC and

local codes. Size wire based on MCA (Minimum Circuit

Amps) on the unit informative plate. See Fig. 15 for power

wiring connection to the unit power terminal block and equip-

ment ground.

Route power and ground lines through control box end pan-

el or unit basepan (see Fig. 4) to connections as shown on unit

wiring diagram and Fig. 15.

The correct power phasing is critical to the operation of the

scroll compressors. An incorrect phasing will result in

compressor shutdown on thermal overload and possible

&_mage to complessol: Should this occm: power phase cor-

rection must be made to the incoming powel:

Unit cabinet must have an uninterrupted, unbroken electri-

cal ground to minimize the possibility of peLsonal injury if

an electrical fault should occur This ground may consist of

electric_d wire connected to unit ground lug in control com-

partment, or conduit approved for electric_d ground when

installed in accordance with NEC, ANSI/NFPA (American

National Standiuds Institute/National Fire Protection Asso-

ciation), latest edition, and loc_d electric_d codes. Do not

use gas pil)ing as an electrical ground. Failure to follow

this w_u'ning could result in the installer being liable for

personal injury of others.

Field wiring must conform to temperature limitations for

type "T' wire. All field wiring must comply with NEC and

local requirements.

Operating voltage to compressor must be within voltage

range indicated on unit nameplate. On 3-phase units, voltages

between phases must be balanced within 2%.

Unit failure as a result of operation on improper line voltage

or excessive phase imbalance constitutes abuse and may cause

&image to electrical components.

FIELD CONTROL WIRING -- Unit can be controlled with

either a Carrier-approved accessory thermostat. Install thermo-

stat according to the installation instructions included with

accessory. Locate thermostat assembly on a solid interior wall

in the conditioned space to sense average temperature.

Route thermostat cable or equivalent single leads of colored

wire from subbase terminals through conduit into unit to low-

voltage connections as shown on unit label wiring diagram and

in Fig. 16.

NOTE: For wire runs up to 50 ft, use no. 18 AWG (American

Wire Gage) insulated wire (35 Cminimum). For 50 to 75 ft,

use no. 16 AWG insulated wire (35 Cminimum). For over

75 ft, use no. 14 AWG insulated wire (35 CMinimum). All

wire lalger than no. 18 AWG cannot be directly connected at

the thermostat and will require a junction box and splice at the

thermostat.

I TBI

I FIELD I _ F_q

L.......

ow l

(/)a.

F, 1

LEGEND

EQUIP -- Equipment

GND -- Ground

NEC -- National Electrical Code

TB -- Terminal Board

EQUIP GND

NOTE: The maximum wire size for TB1 is 2/0.

Fig. 15 -- Field Power Wiring Connections

THERMOSTAT ASSEMBLY

I I I I I I I I

TB2- 1_ [_ [_ [_ [] [_ [_ [_8

Jll 2 3 4 5 6 7

Fig. 16- Field Control Thermostat Wiring

Set heat anticipator settings as follows:

STAGE 1STAGE 1 AND 2

VOLTAGE (Wl) ON (W1 AND W2) ON

All 0.98 0.44

Settings may be changed slightly to provide a greater degree

of comfort for a particular installation.

Step 10 -- Install Outdoor Air Hood --Per-

form the following procedure to install the outdoor-air hood on

units equipped with an economizer, two-position ck+mpel: or

manual outdoor air &+mper:

1. Remove blank panel from return end of unit (hood sec-

tion). Save the screws. See Fig. 17 for shipping location

of components.

2. Hood sides _ue fastened to sides of outdoor air opening.

Remove the hood sides and save the screws (3 each side).

3. Remove the bracket holding the bottom half of the hood

in the shipping position. Remove the hood bottom h+df

and filters (or manual dampers on units so equipped)

from outdoor section.

NOTE: On units without economizers, the components

are attached to the unit basepan. To access the compo-

nents, remove the panel below the outdoor air intake

section.

4. Remove inner filter track from shipping position in out-

door section. Position inner filter track so the track is

facing outward from the unit. Install the filter track with 4

screws provided.

5. Apply se_d strip (provided) to back flange of both hood

sides where hood side connects to the unit back panel.

See Fig. 18.

6. Apply seal strip (provided) to top flange of both hood

sides where hood sides connect to the hood top panels.

See Fig. 18.

7. Install hood sides to the back panels using the screws

from Step 2. The sloped flanges point outw_ud. The drip

edges of the side panels should face outward as well. The

filter guides to the hood sides. The flanges of the filter

guides should face inw_u'd to hold the filters in place.

See Fig. 18.

8. Apply seal strip _dong the entire length of the bottom

flange of the hood top. See Fig. 18.

9. [nstall the bottom ptut of the hood top using 4 screws pro-

videdi See Fig. 18.

10. Remove the packaging from tilters (3) and install into the

filter tracks. Slide the filtel.'s to the sides then place the last

filter into the center of the filter track.

NOTE: For units with manmd dampers, replace the end filters

with the manual &_mpers. Install the filter in the center

between the manual dampel.s.

11. Install the filter retainer track along the bottom edge of

the outdoor air hood using 4 screws provided. See

Fig. 18.

12. [nstall top section of the outdoor air hood using 9 screws

provided. See Fig. 18. See Fig. 19 for a pictme of the as-

sembled outdoor air hood.

NOTE: For filter removal, remove the four screws holding the

filter retainel: The filters can then be removed, cleaned, or

replaced. Install the filters by reversing the procedure.

MANUAL DAMPER ASSEMBLY-- For units equipped

with manual dampers, the assembly process is similar to the

outdoor air hood for units with economizers. There me two

slide dampers shipped with the unit to 'allow for manual setting

of the outside air volume. When assembling the hood, place

one of the manual slide dampers in each of the end positions

and the remaining filter in the center position. The manual

dampel.s can then be moved to the appropriate position and

then locked into place using the screws mounted in the adjust-

ment slots. See Fig. 20.

HOOD TOP

(TOP HALF)_

HOOD

SIDE

HOOD HOOD TOP

SIDE BOTTOM HALF)

RETURN AIR

SECTION

Fig. 17 -- Outdoor-Air Hood Component

Shipping Location

Table 4A -- Electrical Data (Units Without Optional Powered Convenience Outlet)

UNIT

SIZE

48HG

NOMINAL

VOLTAGE

(3 Ph, 80 HZ)

208/230

460

575

208/230

46O

575

208/230

46O

575

COMPRESSOR POWER SUPPLY

VOLTAGE OFM IFM POWER COMBUSTION POWER UNITS WITH

RANGE No. 1 No. 2 No. 3 EXHAUST FAN MOTOR SUPPLY* OPTIONAL HACR

BREAKER

FLA.. _La_MIn Max RLA LRA RLA LRA RLA LRA Qty Hp (ea) Hp FLA Qty Hp FLA MCA MOCP MCA MOCP

80/ 79 100/100 80/ 80 100/100

3.7 10.6/ 9.6 2 1 5.9 92/ 91 100/100 92/ 92 100/100

86/ 85 100/100 86/ 86 100/100

5 16.7/15.2 2 1 5.9 98/ 96 100/100 98/ 98 100/100

187 253 28.2 208 28.2 208 4 0.25 1.5 0.5 94/ 91 100/100 94/ 94 100/100

7.5 24.2/22 2 1 5.9 105/103 125/125 105/105 125/125

101/ 97 125/100 101/101 125/125

10 30.8/28 2 1 5.9 113/109 125/125 113/113 125/125

42 50 42 50

3.7 4.8 2 1 3.1 48 60 48 60

45 60 45 60

5 7.6 2 1 3.1 51 60 51 60

414 506 15.4 104 15.4 104 4 0.25 0.7 0.3 48 60 48 60

7.5 11 2 1 3.1 55 60 55 60

51 60 51 60

10 14 2 1 3.1 58 60 58 60

38 50 38 50

5 6.1 2 1 2.4 43 50 43 50

41 50 41 50

518 633 12.8 83 12.8 83 4 0.25 0.7 7.5 9 0.24

2 1 2.4 45 50 45 50

43 50 43 50

10 11 2 1 2.4 47 60 47 60

92/ 91 100/100 92/ 92 100/100

3.7 10.6/ 9.6 2 1 5.9 104/103 125/125 104/104 125/125

98/ 96 100/100 98/ 98 100/100

5 16.7/15.2 2 1 5.9 110/108 125/125 110/110 125/125

187 253 32.1 240 32.1 240 6 0.25 1.5 0.5 105/103 125/125 105/105 125/125

7.5 24.2/22 2 1 5.9 117/115 125/125 117/117 125/125

112/109 125/125 112/112 125/125

10 30.8/28 2 1 5.9 124/121 150/150 124/124 150/150

44 50 44 50

3.7 4.8 2 1 3.1 50 60 50 60

46 60 46 60

5 7.6 2 1 3.1 53 60 53 60

414 506 15.4 110 15.4 110 6 0.25 0.7 0.3 50 60 50 60

7.5 11 2 1 3.1 56 60 56 60

53 60 53 60

10 14 2 1 3.1 59 60 59 60

39 50 39 50

5 6.1 2 1 2.4 44 50 44 50

42 50 42 50

518 633 12.8 88 12.8 88 6 0.25 0.7 7.5 9 0.24

2 1 2.4 47 50 47 50

44 50 44 50

10 11 2 1 2.4 49 60 49 60

117/116 125/125 117/117 125/125

5 16.7/15.2 2 1 5.9 129/128 150/150 129/129 150/150

125/123 150/150 125/125 150/150

187 253 28.2 208 28.2 208 28.2 208 6 0.25 1.5 7.5 24.2/22 0.5

2 1 5.9 137/134 150/150 137/137 150/150

132/129 150/150 132/132 150/150

10 30.8/28 2 1 5.9 144/140 150/150 144/144 150/150

62 70 62 70

5 7.6 2 1 3.1 68 80 68 80

65 80 65 80

414 506 15.4 104 15.4 104 15.4 104 6 0.25 0.7 7.5 11 0.3

2 1 3.1 71 80 71 80

68 80 68 80

10 14 2 1 3.1 74 80 74 80

52 60 52 60

5 6.1 2 1 2.4 57 60 57 60

55 60 55 60

518 633 12.8 83 12.8 83 12.8 83 6 0.25 0.7 7.5 9 0.24

2 1 2.4 60 60 60 60

57 60 57 60

10 11 2 1 2.4 62 70 62 70

DISCONNECT

SIZE

FLA

84/ 83

98/ 96

91/ 89

105/103

100/ 97

113/111

107/104

121/118

96/ 95

110/109

103/102

117/115

112/109

126/123

120/118

133/130

127/128

140/139

135/133

148/147

143/140

157/183

See Legend and Notes on page 15.

Table 4B -- Electrical Data (Units With Optional Powered Convenience Outlet)

COMPRESSOR

VOLTAGE OFM IFM POWER COMBUSTION POWER

UNIT NOMINAL RANGE NO. 1 NO. 2 NO. 3 EXHAUST FAN MOTOR SUPPLY*

SIZE VOLTAGE

48HG (3 Ph, 60 HZ)

_La_ FLAMIn Max RLA LRA RLA LRA RLA LRA Oty Hp Hp FLA Oty Hp (ea) FLA MCA MOCP

i i

85/ 84 100/100

3.7 10.6/ 9.6 2 1 5.9 97/ 96 100/100

91/ 90 100/100

5 16.7/15.2 2 1 5.9 103/101 125/125

208/230 187 253 28.2 208 28.2 208 4 0.25 1.5 0.5 99/ 96 100/100

7.5 24.2/22 2 1 5.9 110/108 125/125

106/102 125/125

10 30.8/28 2 1 5.9 118/114 125/125

45 60

3.7 4.8 2 1 3.1 51 60

48 60

20 5 7.6 2 1 3.1 54 60

460 414 506 15.4 104 15.4 104 4 0.25 0.7 0.3 51 60

7.5 11 2 1 3.1 58 60

54 60

10 14 2 1 3.1 61 70

41 50

5 6.1 2 1 2.4 46 50

44 50

575 518 633 12.8 83 12.8 63 4 0.25 0.7 7.5 9 0.24

2 1 2.4 48 60

46 50

10 11 2 1 2.4 50 60

97/ 96 100/100

3.7 10.6/ 9.6 2 1 5.9 109/108 125/125

103/101 125/125

5 16.7/15.2 2 1 5.9 115/113 125/125

208/230 187 253 32.1 240 32.1 240 6 0.25 1.5 0.5 110/108 125/125

7.5 24.2/22 2 1 5.9 122/120 150/150

117/114 125/125

10 30.8/28 2 1 5.9 129/126 150/150

47 60

3.7 4.8 2 1 3.1 53 60

49 60

24 5 7.6 2 1 3.1 56 60

460 414 506 15.4 110 15.4 110 6 0.25 0.7 0.3 53 60

7.5 11 2 1 3.1 59 60

56 60

10 14 2 1 3.1 62 70

42 50

5 6.1 2 1 2.4 47 50

45 50

575 518 633 12.8 88 12.8 68 6 0.25 0.7 7.5 9 0.24

2 1 2.4 50 60

47 50

10 11 2 1 2.4 52 60

122/121 150/125

5 16.7/15.2 2 1 5.9 134/133 150/150

130/128 150/150

208/230 187 253 28.2 208 28.2 208 28.2 208 6 0.25 1.5 7.5 24.2/22 0.5

2 1 5.9 142/139 150/150

137/134 150/150

10 30.8/28 2 1 5.9 149/145 175/150

65 80

5 7.6 2 1 3.1 71 80

68 80

28 460 414 506 15.4 104 15.4 104 15.4 104 6 0.25 0.7 7.5 11 0.3

2 1 3.1 74 80

71 80

10 14 2 1 3.1 77 90

55 60

5 6.1 2 1 2.4 60 60

58 60

575 518 633 12.8 83 12.8 63 12.8 83 6 0.25 0.7 7.5 9 0.24

2 1 2.4 63 70

60 60

10 11 2 1 2.4 65 70

POWER SUPPLY

UNITS WITH DISCONNECT

OPTIONAL HACR SIZE

BREAKER

MCA MOCP FLA

85/ 85 100/100 90/ 89

97/ 97 100/100 103/102

91/ 91 100/100 97/ 95

103/103 125/125 110/109

99/ 99 100/100 105/103

110/110 125/125 119/116

106/106 125/125 113/110

118/118 125/125 127/123

45 60 48

51 60 55

48 60 51

54 60 58

51 60 55

58 60 62

54 60 58

61 70 65

41 50 43

46 50 49

44 50 46

48 60 52

46 50 49

50 60 54

97/ 97 100/100 102/101

109/109 125/125 116/115

103/103 125/125 109/107

115/115 125/125 123/121

110/110 125/125 118/115

122/122 150/150 131/129

117/117 125/125 125/122

129/129 150/150 139/136

47 60 49

53 60 56

49 60 52

56 60 60

53 60 56

59 60 63

56 60 60

62 70 67

42 50 45

47 50 50

45 50 48

50 60 54

47 50 50

52 60 56

122/122 150/150 133/131

134/134 150/150 146/144

130/130 150/150 141/139

142/142 150/150 155/152

137/137 150/150 149/146

149/149 175/175 162/159

65 80 70

71 80 77

68 80 74

74 80 61

71 80 78

77 90 65

55 60 59

60 60 65

58 60 63

63 70 68

60 60 65

65 70 71

LEGEND AND NOTES FOR TABLES 4A AND 4B

LEGEND

FLA -- Full Load Amps

HAOR -- Heating, Air Conditioning and Refrigeration

IFM -- Indoor (Evaporator) Fan Motor

LRA -- Locked Rotor Amps

MCA -- Minimum Circuit Amps

MOOP -- Maximum Overcurrent Protection

NEC -- National Electrical Code

OFM -- Outdoor (Condenser) Fan Motor

RLA -- Rated Load Amps

*Fuse or HACR circuit breaker.

NOTES:

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

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

the overcurrent protective device for the unit shall be fuse or

HACR breaker. Canadian 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 voltage imbalance.

% Voltage Imbalance

= 100 x max voltage deviation from average voltage

average voltage

EXAMPLE: Supply voltage is 460-3-60.

AB C AB = 452 v

(_ BC = 464 v

AC = 456 v

Average Voltage= 452 + 464 + 456

1371

= 457

Determine maximum deviation from average voltage.

(AB) 467 - 462 = 5 v

(BC) 464 - 457 = 7 v

(AC) 457 -456 = 2 v

Maximum deviation is 7 v.

Determine percent voltage imbalance.

% Voltage Imbalance = 100 x 45"_"

= 1.53%

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

maximum allowable 2%.

I MPORTANT: If the supply voltage phase imbalance is more I

than 2%, contact the local electric utility company immediately. I

3. The convenience outlet full load amps (FLA) are 5, 3, and 3 for

208/230,460, 575-V units, respectively.

TOP HOOD

SECTION

SEAL

STRIP

HOOD

SECTION

ADD

SEAL

HOOD STRIP

SIDE ADD

STRIP INNER

FILTER

ADD

SEAL

STRIP

ADD

SEAL

GUIDE

FILTER

RETAINER

FILTER

MANUAL

DAMPER

(IF EQUIPPED)

NOTE: Units with manual damper only use one filter.

Fig. 18 -- Outdoor-Air Hood Details

HOOD

SIDE

UNIT

BACK

PANEL

Fig. 19 -- Outdoor-Air Hood Assembled

MOVEABLE DAMPER j

AIR FILTER POSITION MOVEABLE DAMPER

Fig. 20 -- Manual Damper Details

Step 11 -- Position Optional Power Exhaust or

Barometric Relief Damper Hood-- The optional

power exhaust or barometric relief dampel,'s are shipped

assembled and tilted back into the unit for shipping. Brackets

and extra screws am shipped in shrink wrap around the

dalnpers,

1, Remove 9 screws holding each &tmper assembly in

place, See Fig, 21. Each dmnper assembly is secured with

3 screws on each side and 3 screws along the bottom,

Save screws.

2. Pivot the damper assembly outward until top edge of the

damper assembly rests against the inside wall of unit.

3. Secure each damper assembly to unit with 6 screws

across top (3 screws provided) and bottom (3 screws

from Step 1) of dampel:

4. With screws saved from Step 1, install brackets on each

side of &tmper assembly. See Fig. 22.

5. Remove tape fi'om damper blades.

Step 12 -- Non-Fused Disconnect -- The handle

for the factory-installed non-fused disconnect is shipped inside

the unit to prevent the handle from &image during shipping.

Follow these steps to complete inst_dlation of the handle.

BE SURE POWER IS SHUT OFF TO THE UNIT FROM

THE BUILDING POWER SUPPLY. Electrical shock

could cause personal injury.

1. Open the control box access dool:

2. Remove the small cover plate located on the unit corner

post near the control section.

3. Remove the inner control box cover. Tile handle and shaft

are located in a plastic bag at the bottom of the control

box.

4. Insert the square shaft into the disconnect with the pins

vertical. On the 100-amp disconnect, the shaft is keyed

into the disconnect and can only be installed one way

(with the pins vertical).

5. [nsert the handle through the corner post and onto the

shaft with the handle positioned so that "OFF' is on top.

6. Rotate the handle to the "ON" position to lock the pins

into the handle.

7. From the inside of the corner post, attach the handle

mounting screws to the handle. Slide the shaft fully into

the handle and tighten the set screw(s) on the disconnect

to lock the shaft. Tighten the screws that attach the handle

to the comer post.

8. Rotate the handle back to the "OFF" position.

9. Replace all panels and doors. Power can now be turned

back on to the unit.

Step 13 --Install All Accessories- After all of

the factory-installed options have been adjusted, install all

field-installed accessories. Refer to the accesso Uinstallation

instructions included with each accesso q. Consult the Carrier

Price Pages for accesso Upackage numbers for particular

applications.

Be camlhl when tilting blower assembly. Hoods and blow-

ers are heavy and can cause injury if dropped.

REMOVE (

SCREWS

,,,=,-.,4_0

},REMOVE

SCREWS

REMOVE

SCREWS

Fig. 21 -- Power Exhaust or Barometric Relief Damper Mounting Details

Fig. 22 -- Bracket and Hood Positioning

PRE-START-UP

F;filure to observe the following warnings could result in

serious personal injury.

1. Follow recognized safety practices and we;u protective

goggles when checking or the servicing refrigerant

system.

2. Do not operate the compressor or provide any electric

power to the unit unless the compressor terminal cover

is in place and secured.

3. Do not remove the compressor terminal cover until all

electrical sources _ue disconnected.

4. Relieve all pressure from file system before touching or

disturbing anything inside the compressor terminal box

if refrigerant leak is suspected around the compressor

terminals.

5. Never attempt to repair a soldered connection while the

refrigerant system is under pressure.

6. Do not use torch to remove any component. The sys-

tem contains oil and refrigerant under pressure. To

remove a component, wear protective goggles and pro-

ceed as follows:

a. Shut off gas and then electrical power to the unit.

Install lockout tag.

b. Relieve all pressure from the system using both

high-pressure and low-pressure poris.

c. Cut the component connection tubing with a tubing

cuttel: and remove the component from the unit.

d. Carefully unsweat the remaining tubing stubs when

necessary. Oil can ignite when exposed to torch

flalne.

Proceed as follows to inspect and plepale the unit for initial

st_ut-up:

1. Remove all access panels.

2. Read and follow instructions on all WARNING CAU-

TION, and INFORMATION labels attached to, or

shipped with, the unit.

3. Make the following inspections:

a. Inspect for shipping and handling damages such as

broken lines, loose parts, or disconnected wires, etc.

b. Inspect for oil at all refrigerant tubing connections

and on unit base. Detecting oil generally indicates a

refrigerant leak. Leak-test all refiigemnt tubing con-

nections using an electronic leak detectol: halide

torch, or liquid-soap solution.

c. Inspect all field-wiring and factoly-wiring connec-

tions. Be sure that connections are completed and

tight.

d. Inspect coil fins. If damaged during shipping and

handling, carefully straighten the fins with a tin

comb.

4. Verify the following conditions:

a. Make sure that condenser fan blade is correctly

positioned in the fan orifice. See Condenser-Fan

Adjustment section on page 49 for more details.

b. M_d_e sure that air filter(s) is in place.

c. Make sure that condensate drain trap is filled with

water to ensure proper di'ainage.

d. Make sure that all tools and miscellaneous loose parts

have been removed.

START-UP

Use the following inforlnation and Start-Up Checklist on

page CL-I to check out unit PRIOR to start-up.

Unit Preparation -- Check that unit has been installed in

accordance with these installation instructions and all applica-

ble codes.

Compressor Mounting- Compressors are internally

spring mounted. Do not loosen or remove compressor hold-

down bolts.

Refrigerant Service Ports-- Each independent re-

frigerant system has a total of 3 Schmder-type service gage

ports per circuit. One port is located on the suction line, one on

the compressor dischmge line, and one on the liquid line. Be

sure that caps on the ports are tight.

Crankcase Heater(s)- Crankcase heaters are ener-

gized as long as there is power to the unit and the compressor is

not operating.

IMPORTANT: Unit power must be on for 24 hom_ prior

to start-up. Otherwise, damage to compressor may

result.

Compressor Rotation -- On 3-phase units, it is impor-

tant to be certain the scroll compressor is rotating in the proper

direction. To determine whether or not compressor is rotating

in the proper direction:

1. Connect service gages to suction and discharge pressure

fittings.

2. Energize the compressoc

3. The suction pressure should diop and the discharge pres-

sure should rise, as is normal on any start-up.

If the suction pressure does not drop and the discharge pres-

sure does not rise to normal levels:

1. Note that the evaporator fan is probably also rotating in

the wrong direction.

2. Turn off power to the unit and install lockout tag.

3. Reverse any two of the unit power leads.

4. Turn on power to the unit.

The suction and discharge pressure levels should now move

to their normal start-up levels.

NOTE: When the compressor is rotating in the wrong direc-

tion, the unit makes an elevated level of noise and does not

provide heating or cooling.

Compressor damage will occur if rotation is not immedi-

ately corrected.

Internal Wiring- Check all electric_d connections in

unit control boxes; tighten as required.

Subcooler Heat Exchanger (SHX) -- The subcool-

er heat exchanger adds approximately 10 to 15° F of sub-

cooling to the system. Check all valves and TXV (thermostatic

expansion valve).

Evaporator Fan- Fan belt and vmiable pulleys are

factory-installedi See Tables 5-23 for fan performance data. Be

sure that fans rotate in the proper direction. See Table 24 for air

quantity limits. See Table 25 for evaporator fan motor specifi-

cations. See Table 26 for accessory/FIOP static pressure. See

Table 27 for fan rpm at various motor pulley settings. To alter

fan performance, see Evaporator Fan Performance Adjustment

section on page 48.

Condenser Fans and Motors -- Condenser fans and

motol.'s ;u'e factory set. Refer to Condensel;Fan Adjustment

section (page 49) as required.

Return-Air Filters- Check that correct filters are in-

stalled in filter tracks (see Table 1 ). Do not operate unit without

return-air filters.

NOTE: For units with 4-in. filter option, units ale shipped with

standard 2-in. filtel.s. To install 4-in. filters, the filter spacers

must be removed.

Outdoor-Air Inlet Screens -- Outdoor-air inlet screens

must be in place before operating unit.

Gas Heat -- Verify gas pressures before turning on heat as

follows:

1. Turn off field-supplied manual gas stop, located external

to unit.

2. Connect pressure gage to supply gas tap, located on field-

supplied manual shutoff valve (see Fig. 14).

Connect pressure gage to manifold pressure tap.

Turn on field-supplied manual gas stop. Temporarily

install the jumper wile between "R" and "WI" on TB2.

Set thermostat to HEAT and raise set point until heat

comes on.

After the unit has run for several minutes, verify the sup-

ply gas pressure is between 5.5 in. wg to 13.0 in. wg, and

the manifold pressure is 2.95 in. wg on horizontal dis-

chtuge applications and 3.00 on vertical dischtuge appli-

cations. If manifold pressure must be adjusted, refer to

Gas Valve Adjustment section.

NOTE: Supply gas pressure must not exceed 13.0 in. wg.

Set themlostat to OFE

Remove jumper wire if the unit will be operating under

thermostat mode.

Return thermostat to desired set point.

AIRFLOW

(Cfm)

5000

5500

6000

6500

7000

7500

8000

8500

9000

Table 5 -- Fan Performance -- 48PGD20 Vertical Supply/Return Units

Rpm

590

633

677

722

767

813

859

906

952

0,2

Bhp

1,47

1.82

2,21

2.67

3.17

3.74

4.36

5,05

5.81

Rpm

663

703

744

A786

828

871

915

B 959

C 1004

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

0.80,4

Bhp

1.74

2,11

2.53 A

3.01

3.53

4.12

4.77 B

5,47 C

6.25

Rpm

727

764

803

842

883

924

966

1008

1051

0.6

Bhp

2,01

2,40

2,84

3,33

3,88

4.48

5,15

5,87

6,67

Rpm

786

820

A857

894

933

972

B1012

1053

C1095

Bhp

2.26

2.67

3.13

3.64

4.21

4.83

5.52

6.26

7.07

Rpm

84O

A872

9O7

942

979

B1017

1056

C 1096

1136

1.0

Bhp

2.52

2.94

3.42

3.95

4.53

5.18

5.88

6.64

7.47

AIRFLOW

(Cfm)

5000

5500

6000

6500

7000

7500

8000

8500

9000

Rpm

891

A921

954

988

B1024

1060

1098

C 1137

1176

1.2

Bhp

2.77

3.21

3.70

4.25

4.85

5.51

6.23

7.01

7.86

Rpm

940

968

B 999

1032

1066

1101

C 1138

1175

D 1214

AVAILABLE EXTERNAL STATIC PRESSURE (in, wg)

1,81.4

Bhp

3.02

3,48

3,99 B

4,55

5,17

5,84 C

6,58

7,38 D

8,24

Rpm

987

1014

1042

1073

1106

1140

1176

1212

1250

1.6

Bhp

3,27

3,74

4,27

4.85

5,48

6.17

6.92

7.74

8.61

Rpm

1032

1057

B1084

1114

C 1145

1178

1213

D1248

1285

Bhp

3.52

4.01

4.55

5.14

5.79

6.50

7.26

8.09

8.99

Rpm

1076

1099

B1125

1153

1183

1215

D1249

1283

1319

2.0

Bhp

3,77

4,27

4,83

5,44

6,10

6,82

7,60

8,45

9.36

LEGEND

Bhp -- Brake Horsepower Inputto Fan

Boldface indicates field-supplied motor/drive required.

NOTES:

1. Motor drive ranges:

(A) Low Range: 685-939 rpm, 4.26 bhp (208/230 and 460-v), 751-954 rpm, 5.75 bhp (575-v)

(B) Mid-Low Range: 949-1206 rpm, 5.75 bhp

(D) High Range: 1014-1297 rpm, 11,50 bhp

All other rpms require field-supplied motor or drive.

2. Bee page 36 for general fan performance notes.

AIRFLOW

(Cfm)

5000

5500

6000

6500

7000

7500

8000

8500

9000

Table 6 -- Fan Performance -- 48PGE20 -- Vertical Supply/Return Units

Rpm

607

652

699

746

794

842

891

940

990

0,2

Bhp

1.53

1.90

2.32

2.79

3.33

3.93

4,59

5.32

6.12

Rpm

677

719

763

A8O7

851

897

943

B 990

C 1037

AVAILABLEEXTERNALSTATICPRESSUSRE(in, wg)

0.4 0.6 0.8

Bhp

1,80

2.19

2.63

3.12

3.68

4.30

4.98

5.72

6.54

Rpm

740

779

819

861

904

947

991

1036

1082

Bhp

2.06

2.47 A

2.93

3.44

4.02

4,65 B

5.35

6.11 C

6.95

apm

797

833

872

911

952

994

1036

1080

1124

Bhp

2,31

2.74 A

3.22

3.75

4.34 B

5.00

5.71

6.49 C

7.35

1.0

Rpm Bhp

850 2.57

884 3.01

921 3.50

958 4.05

998 4.66

1038 5.33

1079 6.07

1121 6.87

1163 7.73

AIRFLOW

(Cfm)

5000

5500

6000

6500

7000

7500

8000

8500

9000

Rpm

900

933

967

1003

B1041

1079

1119

C1160

D 1202

1.2

Bhp

2.82

3.27

3.79

4.35

4.98

5.67

6.42

7.23

6.12

Rpm

949

979

B 1011

1046

1082

1119

C1158

1198

D1238

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

1.4

Bhp

3.06

3.54

4.07 B

4.65

5.29

5.99 C

6.76

7.59 D

8.49

1.6

Rpm

995

1023

1054

1087

1122

1158

1195

1234

1273

Bhp Rpm

3.31 1040

3.60 1066

4.35 1095

4.94 1127

5.60 C 1160

6.32 1195

7.10 D 1231

7.95 1269

8.67 1308

1.8

Bhp Rpm

3.56 1083

4.06 1106

4.62 1135

5.24 1165

5.91 1197

6,64 D1231

7.44 1267

8.30 1303

9,23 1341

2.0

Bhp

3.81

4.33

4.90

5.53

6.22

6.96

7.78

8,65

9.60

LEGEND

Bhp -- Brake Horsepower Inputto Fan

Boldface indicates field-supplied motor/drive required.

NOTES:

1. Motor drive ranges:

(A) Low Range: 685-939 rpm, 4.26 bhp (208/230 and 460-v), 751-954 rpm, 5.75 bhp (575-v)

(B) Mid-Low Range: 949-1206 rpm, 5.75 bhp

(D) High Range: 1014-1297 rpm, 11,50 bhp

All other rpms require field-supplied motor or drive,

2. See page 36 for general fan performance notes.

AIRFLOW

(Cfm)

5000

5500

6000

6500

7000

7500

8000

8500

9000

apm

607

652

699

746

A794

842

891

940

C 990

Table 7 -- Fan Performance -- 48PGF20 -- Vertical Supply/Return Units

0,2

Bhp

1.53

1,90

2.32

2.79

3.33

3.93

4,59

5,32

6.12

apm

677

719

763

807

851

897

943

990

1037

AVAILABLE EXTERNAL STATIC PRESSURE

0,4

Bhp

1.80

2.19

2.63

3.12

3.68

4.30

4.98 B

5.72 C

6.54

0,6

Rpm Bhp

740 2.06

779 2.47 A

A 819 2.93

861 3.44

904 4.02

947 4.65 B

991 5.35

1036 6.11 C

1082 6.95

(in. wg)

0.8

Rpm

797

833

872

911

952

994

1036

1080

1124

Bhp

2.31

2.74 A

3.22

3,75

4.34 B

5.00

5.71

6.49 C

7.35

1.0

Rpm Bhp

850 2.57

884 3.01

921 3.50

958 4.05

998 4.66

1038 5.33

1079 6.07

1121 6.87

1163 7.73

AIRFLOW

(Cfm)

5000

5500

6000

6500

7000

7500

8000

8500

9000

1003

B1041

1079

1119

C1160

D 1202

1,2

Rpm

900

933

967

Bhp

2.82

3.27

3.79

4.35

4.98

5.67

6.42

7.23

8.12

Rpm

949

979

B 1011

1046

1082

1119

C1158

1198

D1238

AVAILABLE EXTERNAL STATIC PRESSURE

1,4

Bhp

3.06

3.54

4.07 B 1054

4.65 1087

5.29 1122

5.99 C 1158

6.76 1195

7.59 D 1234

8.49 1273

1,6

Rpm Bhp

995 3.31

1023 3.80 B

4.35

4.94

5,60 C

6.32

7.10 D

7.95

8.87

(in, wg)

1.8

Rpm

1040

1066

1095

1127

1160

1195

1231

1269

1308

Bhp

3.56

4.06 B

4.62

5.24

5.91

6.64 D

7.44

8.30

9.23

2.0

Rpm

1083

1108

1135

1165

1197

1231

1267

1303

1341

Bhp

3.81

4.33

4.90

5.53

6.22

6.96

7.78

8.65

9.60

LEGEND

Bhp -- Brake Horsepower Input to Fan

Boldface indicates field-supplied motor/drive required.

NOTES:

1. Motor drive ranges:

(A) Low Range: 685-939 rpm, 4.26 bhp (208/230 and 460-v), 751-954 rpm, 5.75 bhp (575-v)

(B) Mid-Low Range: 949-1206 rpm, 5.75 bhp

(D) High Range: 1014-1297 rpm, 11.50 bhp

All other rpms require field-supplied motor or drive,

2. See page 36 for general fan performance notes.

Table 8 -- Fan Performance -- 48PGD24 -- Vertical Supply/Return Units

PRESSURE (in. wg)

AIRFLOW

(Cfm)

5,500

6,000

6,500

7,000

7,500

8,000

8,500

9,000

9,500

10,000

Rpm

633

677

722

767

813

859

906

952

999

1047

0,2

Bhp

1.82

2.21

2.67

3.17

3.74

4,36

5.05

5.81

6.63

7.53

Rpm

7O3

744

A786

828

871

915

B959

1004

C 1049

1094

AVAILABLE EXTERNAL STATIC

0.4

Bhp Rpm

2.11 764

2.53 803

3.01 842

3.53 883

4.12 924

4,77 B 966

5.47 1008

6.25 1051

7.09 1094

8.00 1138

0.6

Bhp Rpm

2.40 820

2.64 857

3.33 894

3.86 933

4,48 972

5.15 1012

5.87 1053

6.67 C 1095

7.53 1137

8.46 D 1180

0.8

Bhp

2.67

3.13

3.64

4.21

4.83

5.52

6.26

7,07

7,95

8.90

942

979

B1017

1056

C 1096

1136

1177

D1219

1.0

Rpm

872

907

Bhp

2.94

3.42

3,95

4.53

5.18

5.88

6.64

7.47

8.36

9.33

PRESSURE (in. wg)

AIRFLOW

(Cfm) 2.0

5,500

6,000

6,500

7,000

7,500

8,000

8,500

9,000

9,500

10,000

Rpm

A 921

954

988

B1024

1060

1096

C 1137

1176

1216

D 1256

1,2

Bhp

3.21

3.70

4.25

4.85

5.51

6.23

7.01

7.66

8.77

9,75

Rpm

968

999

B1032

1066

1101

C 1136

1175

1214

D 1253

1292

AVAILABLE EXTERNAL STATIC

1.4

Bhp Rpm

3.48 1014

3.99 1042

4.55 1073

5.17 1106

5.84 1140

6.58 1176

7.36 1212

8.24 D 1250

9.17 1286

10.16 1327

1.6

Bhp Rpm

3.74 1057

4.27 B 1084

4.85 1114

5.48 C 1145

6.17 1178

6.92 1213

7.74 1248

8.61 1285

9.56 1322

16.57 1360

1.8

Bhp

4.01

4.55

5.14

5.79

6.50

7.26

6.09

8.99

9,95

10.98

Rpm

1099

B 1125

1153

1183

1215

D1249

1283

1319

1355

1393

Bhp

4.27

4.83

5.44

6.10

6.82

7.60

8.45

9.36

10,33

11,38

LEGEND

Bhp -- Brake Horsepower Inputto Fan

Boldface indicates field-supplied motor/drive required.

NOTES:

1. Motor drive ranges:

(A) Low Range: 685-939 rpm, 4.26 bhp (208/230 and 460-v), 751-954 rpm, 5.75 bhp (575-v)

(B) Mid-Low Range: 949-1206 rpm, 5.75 bhp

(D) High Range: 1014-1297 rpm, 11.50 bhp

All other rpms require field-supplied motor or drive.

2. See page 36 for general fan performance notes.

Table 9 -- Fan Performance -- 48PGE24 -- Vertical Supply/Return Units

AVAILABLE EXTERNAL STATIC PRESSURE

AIRFLOW

(Cfm) 0,2

5,500

6,000

6,500

7,000

7,500

8,000

8,500

9,000

9,500

10,000

apm

652

699

746

794

842

891

940

990

1039

1089

Bhp

1.90

2.32

2.79

3.33

3.93

4,59

5.32 B

6.12

7.00 C

7.95

apm

719

763

A8O7

851

897

943

990

1037

1085

1133

0,4

Bhp

2.19

2,63 A

3,12

3,68

4.30

4.98 B

5.72

6.54 C

7.43

8.40 D

0.6

Rpm Bhp

779 2.47

819 2,93 A

861 3.44

904 4.02

947 4.65 B

991 5.35

1036 6,11

1082 6,95 C

1128 7.85

1174 8.83 D

(in. wg)

0.8

Rpm

833

872

911

952

994

1036

1080

1124

1168

1213

Bhp

2.74 A

3.22

3.75

4.34 B

5.00

5.71

6.49 C

7.35

8.27 D

9.26

1.0

Rpm Bhp

884 3.01

921 3.50

958 4.05

998 4.66

1038 5.33

1079 6.07

1121 6.87

1163 7.73

1207 8.67

1251 9.69

AVAILABLE EXTERNAL STATIC PRESSURE

AIRFLOW 1,2

(Cfm)

5,500

6,000

6,500

7,000

7,500

8,000

8,500

9,000

9,500

10,000

Rpm

933

967

1003

1041

1079

1119

1160

1202

1244

1287

Bhp Rpm

3.27 979

3.79 1011

4.35 1046

4.98 1082

5.67 1119

6.42 1158

7.23 1198

8.12 D 1238

9.07 1279

10.10 1321

1.4

Bhp

3.54

4.07 1054

4.65 1087

5.29 1122

5.99 C 1158

6.76 1195

7.59 D 1234

8.49 1273

9.45 1314

10,51 1355

1,6

Rpm Bhp

1023 3.80

4.35 B

4.94

5.60 C

6.32

7.10 D

7.95

8.87

9.85

10.91

(in. wg)

1.8

Rpm

1056

1095

1127

1160

1195

1231

1269

1308

1347

1387

Bhp

4.06

4.62

5.24

5.91

6.64

7.44

8.30

9.23

10,24

11,31

Rpm

1108

B1135

1165

1197

D1231

1267

1303

1341

1379

2.0

Bhp

4.33

4.90

5.53

6.22

6.96

7.78

8,65

9.60

10.62

LEGEND

Bhp -- Brake Horsepower Inputto Fan

Boldface indicates field-supplied motor/drive required.

NOTES:

1. Motor drive ranges:

(A) Low Range: 685-939 rpm, 4.26 bhp (208/230 and 450-v), 751-954 rpm, 5.75 bhp (575-v)

(B) Mid-Low Range: 949-1206 rpm, 5.75 bhp

(D) High Range: 1014-1297 rpm, 11.50 bhp

All other rpms require field-supplied motor or drive.

2. Bee page 36 for general fan performance notes.

Table 10 -- Fan Performance -- 48PGF24 Vertical Supply/Return Units

PRESSURE (in. wg)

AIRFLOW

(Cfm) 0,2

5,500

6,000

6,500

7,000

7,500

8,000

8,500

9,000

9,500

10,000

Rpm

652

699

746

794

842

891

940

996

1039

1089

Bhp

1.90

2.32

2.79

3.33

3.93

4,59

5.32 B

6.12

7.00 C

7.95

Rpm

719

763

A8O7

851

897

943

990

1037

1085

1133

AVAILABLE EXTERNAL STATIC

0.4

Bhp Rpm

2.19 779

2.63 819

3.12 861

3.68 904

4.30 947

4,98 B 991

5.72 1036

6.54 C 1082

7.43 1126

8.40 D 1174

0.6

Bhp Rpm

2.47 833

2.93 A 872

3.44 911

4.02 952

4,65 B 994

5.35 1036

6.11 1080

6.95 C 1124

7.85 1168

8.63 D 1213

0.8

Bhp

2.74

3.22

3.75

4.34

5.00

5.71

6,49

7,35

8,27

9,26

apm

884

A921

958

B998

1038

1079

C 1121

1163

1207

D1251

1.0

Bhp

3.01

3.50

4.05

4.66

5.33

6.07

6.87

7.73

8.67

9.69

PRESSURE (in. wg)

AIRFLOW 1,2 2.0

(Cfm)

5,500

6,000

6,500

7,000

7,500

8,000

8,500

9,000

9,500

10,000

Rpm

933

967

1003

1041

1079

1119

1160

1202

1244

1287

Bhp Rpm

3.27 979

3.79 1011

4.35 1046

4.98 1082

5.67 1119

6.42 1158

7.23 1198

8.12 D 1236

9.07 1279

10,10 1321

AVAILABLE EXTERNAL STATIC

1.4

Bhp Rpm

3.54 1023

4.07 1054

4.65 1087

5.29 1122

5.99 C 1158

6.76 1195

7.59 D 1234

8.49 1273

9.46 1314

10.51 1355

1.6

Bhp Rpm

3.80 1066

4.35 B 1095

4.94 1127

5.60 C1160

6,32 1195

7.10 D 1231

7,95 1269

8,87 1306

9.85 1347

10.91 1387

1.8

Bhp

4.06

4.62

5.24

5.91

6.64

7.44

6.30

9,23

10.24

11.31

Rpm

1108

B 1135

1165

1197

D 1231

1267

1303

1341

1379

Bhp

4.33

4.90

5.53

6.22

6.96

7.78

8,65

9.60

10,62

LEGEND

Bhp -- Brake Horsepower Inputto Fan

Boldface indicates field-supplied motor/drive required.

NOTES:

1. Motor drive ranges:

(A) Low Range: 685-939 rpm, 4.26 bhp (208/230 and 460-v), 751-954 rpm, 5.75 bhp (575-v)

(B) Mid-Low Range: 949-1206 rpm, 5.75 bhp

(D) High Range: 1014-1297 rpm, 11.50 bhp

All other rpms require field-supplied motor or drive.

2. See page 36 for general fan performance notes,

Table 11 -- Fan Performance- 48PGD28- Vertical Supply/Return Units

AVAILABLE EXTERNAL STATIC PRESSURE

AIRFLOW

(Cfm) 0,2

6,500

7,000

7,500

8,000

8,500

9,000

9,500

10,000

10,500

11,000

11,500

12,000

12,500

Rpm

750

797

845

892

939

986

1033

1079

1126

1172

1219

1265

1311

Bhp

2.28

2.78

3.34

3.97

4.68

5.46

6.32 C

7.26

8.28 D

9.40

10.61

11,91

13,32

apm

8O6

A853

9OO

B 948

995

1042

1090

1137

1184

1232

1279

1326

0,4

Bhp

2.62

3.17

3.78 B

4.48

5.25

6,10 C

7.04

8.07

9,20 D

10.42

11.74

13,17

0.6

Rpm Bhp

A854 2.93

899 3.50 B

945 4.15

991 4.88

1038 5.69 C

1085 6.59

1132 7.59

1180 8.67 D

1227 9.86

1274 11.15

1322 12.54

(in. wg)

0.8

Rpm

898

941

985

1030

1076

1122

1169

1216

1263

1310

1357

Bhp

3.25 B

3.84

4.51

5,26 C

6,10

7.04

8.07

9,19 D

10.43

11,76

13.21

1.0

Rpm

943

982

1024

1067

1112

1157

1203

1249

1296

1342

Bhp

3.59

4.18

4.87

5.64

6.50

7.46

8.52

9.68

10.95

12.33

AIRFLOW 1,2

(Cfm) Bhp Rpm

6,500

7,000

7,500

8,000

8,500

9,000

9,500

10,000

10,500

11,000

11,500

12,000

12,500

Rpm

988

1024

1063

1104

1146

1190

1235

1280

1326

1372

3.97 1035

4.56 1066

5.25 1101

6.03 1140

6.91 1180

7.89 D 1222

8.97 1266

AVAILABLE EXTERNAL STATIC PRESSURE

1.4 1,6

Bhp Rpm Bhp

4.40 1082 4.87 C

4.98 1109 5.43

5.66 1141 6.10

6.44 1176 6.88 D

7.33 1214 7.77

8.32 D 1255 8.77

9.42 1296 9.88

10.63 1340 11.10

11,95 1384 12.44

10.16

11.45

12,86

1310

1355

(in, wg)

1,8

Rpm

1130

1153

1181

1213

1249

1287

1327

1369

Bhp

5,39

5,94

6,59 D

7,36

8,24

9,24

10,36

11.59

LEGEND

Bhp -- Brake Horsepower Inputto Fan

Boldface indicates field-supplied motor/drive required.

NOTES:

1. Motor drive ranges:

(A) Low Range: 687-873 rpm, 5.75 bhp

(B) Mid-Low Range: 805-1007 rpm, 5.75 bhp

(D) High Range: 1014-1297 rpm, 11.50 bhp

All other rpms require field-supplied motor or drive.

2. See page 36 for general fan performance notes.

2.0

Rpm Bhp

1177 5.95

1197 6.48

1222 7.12

1251 7.87

1283 8.74

1319 9,74

1357 10.86

1398 12.09

2.5

Table 12 -- Fan Performance -- 48PGE28 -- Vertical Supply/Return Units

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm) 0,2

6,500

7,000

7,500

8,000

8,500

9,000

9,500

10,000

10,500

11,000

11,500

12,000

12,500

Rpm

776

826

878

929

981

1033

1085

1137

1190

1242

1294

1347

Bhp

2.43

2.98

3.60

4.31

5.11

6.00 C

6.98

8.08

9.28 D

10.60

12.04

13,60

Rpm

A825

875

B 925

975

1026

1076

1128

1179

1230

1282

1333

0.4

Bhp

2.75 A

3.22 B

3.89

4.73

5.56 C

6.49

7.53

8.66 D

9.91

11.28

12.76

0.6

Rpm Bhp Rpm

871 3.05 915

918 3.58 B 959

966 4.28 1005

1015 5.11 1052

1064 5.97 C 1100

1114 6.94 1148

1164 8.00 1198

1214 9.18 D1247

1265 10.46 1297

1316 11.86 1347

1367 13.39 --

0.8

Bhp

3.37

3.98

4.69

5.48

6.37

7.36

8.45

9.65

10.97

12.41

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW 1,2

(Cfm)

6,500

7,000

7,500

8,000

8,500

9,000

9,500

10,000

10,500

11,000

11,500

12,000

12,500

Rpm

1004

1041

1081

1124

1168

1214

1260

1308

1356

5.44

6.26

7.17

8.20

9.33

10,58

11.95

Bhp Rpm

4.11 1050

4.73 1083

C1120

1160

1202

D 1245

1290

1337

1384

1.4

Bhp

4.55

5.15 C

5.86

6.68

7.60 D

8.64

9.79

11.05

12.44

1.6

Rpm Bhp Rpm

1096 5.04 1145

1126 5.62 1170

1159 6.32 1199

1196 7.13 D 1233

1235 8.06 1269

1277 9.10 1309

1320 10.26 1351

1365 11.53 1394

1.8

Bhp

5.57

6.14

6.82

7.62

8.54

9,58

10.74

12.03

LEGEND

Bhp -- Brake Horsepower Inputto Fan

Boldface indicates field-supplied motor/drive required.

NOTES:

1. Motor drive ranges:

(A) Low Range: 687-873 rpm. 5.75 bhp

(B) Mid-Low Range: 805-1007 rpm, 5.75 bhp

(D) High Range: 1014-1297 rpm, 11.50 bhp

All other rpms require field-supplied motor or drive.

2. See page 36 for general fan performance notes.

1.0

Rpm Bhp

959 3.72

B1000 4.34

1043 5.05

C 1088 5.86

1134 6.76

1181 7.77

D 1229 8.89

1278 10.12

1327 11,47

1376 12.93

2.0

Rpm Bhp

1192 6.14

1214 6.70

D1240 7.36

1270 8.15

1304 9,05

1341 10,09

1381 11,25

Table 13 -- Fan Performance -- 48PGF28 -- Vertical Supply/Return Units

AVAILABLE EXTERNAL STATIC PRESSURE

AIRFLOW

(Cfm)

6,500

7,000

7,500

8,000

8,500

9,000

9,500

10,000

10,500

11,000

11,500

12,000

12,500

apm

775

826

878

929

981

1033

1085

1137

1190

1242

1294

1347

0,2

Bhp

2.43

2.98

3.60

4.31

5.11

6.00 C

6.98

8.08

9.28 D

10.60

12.04

13,60

apm

A825

875

B 925

975

1026

1076

1128

1179

1230

1282

1333

0,4

Bhp

2.75 A

3.22 B

3.89

4.73

5.56 C

6.49

7.53

8.66 D

9.91

11.28

12.76

0.6

Rpm Bhp

871 3.05

918 3.58 B

966 4.28

1015 5.11

1064 5.97 C

1114 6.94

1164 8.00

1214 9.18 D

1265 10.46

1316 11.86

1367 13.39

(in. wg)

0.8

Rpm

915

959

1005

1052

1100

1148

1198

1247

1297

1347

Bhp

3,37

3,98

4,69

5.48

6,37

7,36

8.45

9,65

10.97

12.41

AVAILABLE EXTERNAL STATIC PRESSURE

AIRFLOW 1,2

(Cfm)

6,500

7,000

7,500

8,000

8,500

9,000

9,500

10,000

10,500

11,000

11,500

12,000

12,500

Rpm

1004

1041

1081

1124

1168

1214

1260

1308

1356

Bhp Rpm

4.11 1050

4.73 1083

5.44 1120

6.26 1160

7.17 1202

8.20 D 1245

9.33 1290

10,58 1337

11.95 1384

1.4

Bhp Rpm

4.55 1098

5.15 C 1126

5.86 1159

6.68 1196

7.60 D 1235

8.64 1277

9.79 1320

11,05 1365

12,44

1,6

Bhp

5.04 C

5.62

6.32

7.13 D

8.06

9.10

10.25

11.53

(in, wg)

1,8

Rpm

1145

1170

1199

1233

1269

1309

1351

1394

Bhp

5.57

6.14

6.82

7.62

8.54

9.58

10.74

12.03

LEGEND

Bhp -- Brake Horsepower Inputto Fan

Boldface indicates field-supplied motor/drive required.

NOTES:

1. Motor drive ranges:

(A) Low Range: 687-873 rpm, 5.75 bhp

(B) Mid-Low Range: 805-1007 rpm, 5.75 bhp

(D) High Range: 1014-1297 rpm, 11.50 bhp

All other rpms require field-supplied motor or drive.

2. See page 36 for general fan performance notes.

1.0

Rpm Bhp

959 3,72

1000 4.34

1043 5.05

1088 5.86

1134 6.76

1181 7.77

1229 8.89

1278 10.12

1327 11,47

1376 12,93

2.0

Rpm Bhp

1192 6.14

D 1214 6.70

1240 7.36

1270 8.15

1304 9,05

1341 10,09

1381 11,25

AIRFLOW

(Cfm)

5000

5500

6000

6500

7000

7500

8000

8500

9000

Table 14 -- Fan Performance- 48PGD20 -- Horizontal Supply and Return Units

Rpm

862

937

1013

1089

1166

1243

1320

1398

0,2

Bhp

2.65

3.26

3.58

4.48

5.52

6.71

8.07

9,60

Rpm

917

F988

1060

G 1133

1207

H1282

1356

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

0.8 1.O0.4

Bhp

2.93 F

3.56

3.96

4.89 G

5.96 R

7.18

8.57

Rpm

969

1036

1105

1175

1247

1319

1392

0.6

Bhp

3.21

3.53

4.35

5,31

6.41

7.66

9.08

apm

1019

F1083

1149

G 1216

R 1285

1355

Bhp Rpm

3.17 F1066

3.90 1127

4.75 1191

5.73 1256

6.86 1323

8.14 1391

Bhp

3.52

4.28

5.16

6.17

7.32

8,63

AIRFLOW

(Cfm)

5000

5500

6000

6500

7000

7500

8000

8500

9000

Rpm

F 1112

1171

G1232

H 1295

1360

1.2

Bhp

3.88

4.67

Rpm

F 1156

G 1212

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

1.4 1,6 1.8

Bhp Rpm Bhp Rpm

4.25 1199 4.63 G 1240

5.06 1253 5.47 H 1292

1310

1369

6.43 1348

7,52

Bhp Rpm

5.02 G 1280

5.88 H 1331

6.87 13845.57 H

6.61

7,80

1271

1333

1396

6.00 H

7.06

8,27

2.0

Bhp

5.42

6,30

7,31

LEGEND

Bhp -- Brake Horsepower Inputto Fan

Boldface indicates field-supplied motor/drive required.

NOTES:

1. Motor drive ranges:

(E) Low Range: Net Used

(F) Mid-Low Range: 896-1227 rpm, 4.26 bhp (208/230 and 460-v), 873-1108 rpm, 5.75 bhp (575-v)

(G) Mid-High Range: 1113-1414 rpm, 5.75 bhp

(H) High Range: 1096-1339 rpm, 8.63 bhp

All other rpms require field-supplied motor or drive,

2. See page 36 for general fan performance notes.

AIRFLOW

(Cfm)

5000

5500

6000

6500

7000

7500

8000

8500

9000

Table 15 -- Fan Performance- 48PGE20 -- Horizontal Supply and Return Units

apm

875

952

1029

1106

1184

1262

1341

0,2

Bhp

2.74

3.38

3.74

4.67

5.75

7.00

8,41

apm

931

F1003

1077

G 1151

1226

H1302

1378

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

0.80,4

Bhp

3.04 F

3.32

4.15 G

5.11

6.23 H

7,50

8.95

Rpm

984

1053

1123

1194

1266

1340

0.6

Bhp

3.34

3.70

4.56

5.56

6.71

8.01

Rpm

1035

F1100

G 1167

1236

H1306

1377

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

Bhp

3.33 F

4.09 G

4.98

6.01 H

7.19

8,53

1.0

Rpm Bhp

1083 3.69

1145 4.49

1210 5.41

1276 6.47

1344 7.68

AIRFLOW

(Cfm)

5000

5500

6000

6500

7000

7500

8000

8500

9000

Rpm

1130

1189

1251

1315

1381

1,2

Bhp

4.07

4.90

5.85

6.94

8,18

Rpm

1174

G1232

H 1292

1354

1,4

Bhp

4.45 G

5.31

6.29 H

7.41

Rpm

1218

1273

1331

1391

1,6

Bhp

4.84

5.72

6.74

7.89

1.8

Rpm

1259

1313

1369

Bhp

5.23 G

6.15

7,19

2.0

Rpm Bhp

1300 5,63

1352 6.58

LEGEND

Bhp -- Brake Horsepower Input to Fan

Boldface indicates field-supplied motor/drive required.

NOTES:

1. Motor drive ranges:

(E) Low Range: Net Used

(F) Mid-Low Range: 896-1227 rpm, 4.26 bhp (208/230 and 460-v), 873-1108 rpm, 5.75 bhp (575-v)

(G) Mid-High Range: 1113-1414 rpm, 5.75 bhp

(H) High Range: 1096-1339 rpm, 8.63 bhp

All other rpms require field-supplied motor or drive,

2. See page 36 for general fan performance notes.

AIRFLOW

(Cfm)

5000

5500

6000

6500

7000

7500

8000

8500

9000

Table 16 -- Fan Performance -- 48PGF20 -- Horizontal Supply and Return Units

Rpm

875

952

1029

1106

1184

1262

1341

0,2

Bhp

2.74

3.38

3.74

4.67

5.75

7.00

8,41

Rpm

931

F 1003

1077

G 1151

1226

H1302

1378

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

0.4

Bhp

3.04 F

3.32

4.15 G

5.11

6.23 H

7.50

8,95

0.6

Rpm Bhp Rpm

984 3.34 1035

1053 3.70 1100

1123 4.56 G 1167

1194 5.56 1236

1266 6.71 1306

1340 8,01 1377

0.8

Bhp

3.33

4.09

4.98

6,01

7.19

8.53

apm

F 1083

1145

G1210

H 1276

1344

1.0

Bhp

3.69

4.49

5.41

6.47

7,68

AIRFLOW

(Cfm)

5000

5500

6000

6500

7000

7500

8000

8500

9000

1.2

Rpm

1174

G1232

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

1.4 1,6

Bhp Rpm Bhp Rpm

4.45 1218 4.84 G 1259

5.31 1273 5.72 H 1313

H 1331

1391

6.74

7.89

1369

1.8

Bhp

5.23

6.15

Rpm

G 1300

1352

Rpm

1130

1189

1251 5.85

1315 6,94

1381 8.18

Bhp

4.07

4.90

H 1292

1354

6.29

7,41

7.19

2.0

Bhp

5.63

6,58

LEGEND

Bhp -- Brake Horsepower Input to Fan

Boldface indicates field-supplied motor/drive required.

NOTES:

1. Motor drive ranges:

(E) Low Range: Not Used

(F) Mid-Low Range: 896-1227 rpm, 4.26 bhp (206/230 and 460-v), 673-1108 rpm, 5.75 bhp (575-v)

(G) Mid-High Range: 1113-1414 rpm, 5.75 bhp

(H) High Range: 1096-1339 rpm, 6.63 bhp

All other rpme require field-supplied motor or drive,

2. See page 36 for general fan performance notes.

Table 17 -- Fan Performance -- 48PGD24 -- Horizontal Supply and Return Units

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

5,500

6,000

6,500

7,000

7,500

8,000

8,500

9,000

9,500

10,000

apm

937

F1013

1089

G 1166

1243

H1320

1398

0,2

Bhp

3.26

3.58

4,48

5.52

6.71

8.07

9,60

apm

988

F1060

G 1133

1207

H1282

1356

0,4

Bhp Rpm

3.56 F 1036

3.96 1105

4,89 G 1175

5.96 H 1247

7.18 1319

8.57 1392

0.6 0.8

Bhp Rpm

3.53 F 1083

4.35 1149

5,31 1216

6.41 H 1285

7,66 1355

9.08

AVAILABLE EXTERNAL STATIC PRESSURE (in, wg)

AIRFLOW 1,2 1.4 1,6 1,8

(Cfm)

Bhp

3.90 G

4.75

5.73 H

6.86

8,14

1.0

Rpm Bhp

1127 4.28

1191 5.16

1256 6,17

1323 7.32

1391 8.63

5,500

6,000

6,500

7,000

7,500

8,000

8,500

9,000

9,500

10,000

Rpm

1171

1232

1295

1360

Bhp

4.67

5.57

Rpm

G 1212

1271

Bhp

5.06

6.00

Bhp

5.47

6.43

Rpm

H1292

1348

6.61

7,80

1333

1396

Rpm

G 1253

H1310

7.06 1369

8.27

7.52

Bhp

5.88

6,87

Rpm

1331

1384

2.0

Bhp

6.30

7.31

LEGEND

Bhp -- Brake Horsepower Input to Fan

Boldface indicates field-supplied motor/drive required.

NOTES:

1. Motor drive ranges:

(E) Low Range: Net Used

(F) Mid-Low Range: 896-1227 rpm, 4.26 bhp (208/230 and 460-v), 873-1108 rpm, 5.75 bhp (575-v)

(G) Mid-High Range: 1113-1414 rpm, 5.75 bhp

(H) High Range: 1096-1339 rpm, 8.63 bhp

All other rpms require field-supplied motor or drive.

2. See page 36 for general fan performance notes.

Table 18 -- Fan Performance -- 48PGE24 -- Horizontal Supply and Return Units

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm) 0,2

5,500

6,000

6,500

7,000

7,500

8,000

8,500

9,000

9,500

10,000

Rpm

952

1029

1106

1184

1262

1341

Bhp

3.38

3.74

4.67

5.75

7.00

8,41

Rpm

1003

F1077

G1151

1226

H1302

1378

0.4

Bhp

3.32 F

4.15 G

5.11

6.23 H

7.50

8,95

0.6

Rpm Bhp Rpm

1053 3.70 F 1100

1123 4.56 G 1167

1194 5.56 1236

1266 6.71 1306

1340 8,01 1377

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

0.8

Bhp

4,09

4,96

6,01

7,19

8.53

apm

1145

G1210

H1276

1344

1.0

Bhp

4.49

5.41

6.47

7.68

5,500

6,000

6,500

7,000

7,500

8,0OO

8,500

9,0OO

9,500

10,000

Bhp --

1,2

Rpm Bhp

G 1189 4.90

1251 5.85

H1315 6.94

1381 8.18

LEGEND

Bmke HorsepowerlnputtoFan

Rpm

G 1232

H1292

1354

1.4

Bhp

5.31 G

6.29 H

7,41

1.6

Rpm Bhp Rpm

1273 5.72 H1313

1331 6.74 1369

1391 7.89 --

1.8

Bhp

6,15

7.19

Rpm

1352

Boldface indicates field-supplied motor/drive required.

NOTES:

1. Motor drive ranges:

(E) Low Range: Net Used

(F) Mid-Low Range: 896-1227 rpm, 4,26 bhp (208/230 and 460-v), 873-1108 rpm, 5.75 bhp (575-v)

(G) Mid-High Range: 1113-1414 rpm, 5.75 bhp

(H) High Range: 1096-1339 rpm, 8.63 bhp

All other rpms require field-supplied motor or drive.

2. See page 36 for general fan performance notes.

2.0

Bhp

6,58

Table 19 -- Fan Performance -- 48PGF24 -- Horizontal Supply and Return Units

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm) 0,2 0.8

5,500

6,000

6,500

7,000

7,500

8,000

8,500

9,000

9,500

10,000

Rpm

952

F1029

1106

G1184

H1262

1341

Bhp

3.38

3.74

4,67

5.75 H

7.00

8,41

Rpm

1003

F1077

G1151

1228

1302

1378

0,4

Bhp

3.32 F

4.15 G

5.11

6.23 H

7,50

8.95

Rpm

1053

1123

1194

1266

1340

0.6

Bhp

3.70

4.56

5.56

6.71

8.01

Rpm

F1100

G 1167

1236

H1306

1377

Bhp

4.09 G

4.98

6.01 H

7.19

8.53

1.0

Rpm Bhp

1145 4.49

1210 5.41

1276 6.47

1344 7.68

AVAILABLE EXTERNAL STATIC PRESSURE (in, wg)

AIRFLOW 1,8

(Cfm)

5,500

6,000

6,500

7,000

7,500

8,000

8,500

9,000

9,500

10,000

Rpm

G 1189

1251

H1315

1381

LEGEND

1,2

Bhp

4.90

5.85

6.94

8,18

Rpm

G 1232

H1292

1354

1.4

Bhp

5.31 G

6.29 H

7.41

Rpm

1273

1331

1391

1,6

Bhp

5.72

6.74

7.89

Rpm

H1313

1369

Bhp

6.15

7,19

Bhp -- Brake Horsepower Inputto Fan

Boldface indicates field-supplied motor/drive required.

NOTES:

1. Motor drive ranges:

(E) Low Range: Not Used

(F) Mid-Low Range: 896-1227 rpm, 4.26 bhp (208/230 and 460-v), 873-1108 rpm, 5.75 bhp (575-v)

(G) Mid-High Range: 1113-1414 rpm, 5.75 bhp

(H) High Range: 1096-1339 rpm, 8.63 bhp

All other rpms require field-supplied motor or drive.

2. See page 36 for general fan performance notes.

2.0

Rpm Bhp

1352 6.58

Table 20 -- Fan Performance -- 48PGD28 -- Horizontal Supply and Return Units

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm) 0,2 1.0

6,500

7,000

7,500

8,000

8,500

9,000

9,500

10,000

10,500

11,000

11,500

12,000

12,500

Rpm

788

842

898

965

1012

1069

1127

1184

1242

1299

1357

Bhp

2.50

3.09

3.77

4.55

5.42

6.41

7.51

8.74

10.09

11,58

13.20

Rpm

819

E871

925

F979

1034

G 1090

1146

1202

N1258

1315

1372

0.4

Bhp

2.70 E

3.30

3.99 F

4.77

5.65

6.65 G

7.76

8.99 H

10.35

11.85

13.48

0.6

Rpm Bhp Rpm

857 2.96 899

905 3.55 F 943

955 4.24 989

1007 5.03 1037

1059 5.92 G 1087

1113 6.92 1138

1167 8.04 1190

1221 9.28 N 1243

1276 10.64 1296

1332 12.15 1350

1388 13.79 --

0.8

Bhp

3.25

3.85

4.54

5.33

6.22

7.23

8.35

9.59

10.96

12.47

apm

943

F983

1026

1070

G1117

1165

1215

H1266

1318

1370

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW 1,2 1.8 2.0

(Cfm)

Bhp

3.59

4.19

4.88

5.67

6.56

7.57

8.69

9.93

11,31

12,82

6,500

7,000

7,500

8,000

8,500

9,000

9,500

10,000

10,500

11,000

11,500

12,000

12,500

Rpm

988

1024

1063

1105

1149

1194

Bhp Rpm

3.97 1035

4.57 1068

5.25 1102

8.04 1140

8.94 1181

7.94 H 1225

1.4

Bhp

4.39

4.98 G

5.66

6.45

7.34

8.35 H

1.6

Rpm Bhp Rpm

1082 4.87 1129

1109 5.43 1153

1141 8.11 1181

1176 6.89 1213

1215 7.78 1249

1256 8.79 1287

Bhp Rpm

5.39 1177

5.93 1197

6.69 H1221

7.36 1250

8.25 1283

9.25 1319

Bhp

5.95

6.48

7.11

7.87

8.74

9,74

1242 9,07

1290 10.31

1340 11.69

1391 13,20

1270

1316

1364

9.47 1298 9.91

10.72 1343 11.16

12.10 1389 12.54

1328

1370

10.37

11.62

1358

1399

10.87

12,11

LEGEND

Bhp -- Brake Horsepower Input to Fan

Boldface indicates field-supplied motor/drive required.

NOTES:

1. Motor drive ranges:

(E) Low Range: 887-873 rpm. 5.75 bhp

(F) Mid-Low Range: 805-1007 rpm, 5.75 bhp

(G) Mid-High Range: 941-1178 rpm, 8.63 bhp

(H) High Range: 1014-1297 rpm, 11.50 bhp

All other rpms require field-supplied motor or drive.

2. See page 36 for general fan performance notes.

Table 21 -- Fan Performance -- 48PGE28 -- Horizontal Supply and Return Units

AVAILABLE EXTERNAL STATIC PRESSURE

AIRFLOW

(Cfm) 0,2

6,500

7,000

7,500

8,000

8,500

9,000

9,500

10,000

10,500

11,000

11,500

12,000

12,500

Rpm

799

856

913

971

1029

1087

1145

1203

1261

1320

1378

Bhp

2.58 E

3.19

3.89 F

4.69

5.60

6.62 G

7.75

9.01 H

10.40

11,93

13.61

apm

833

887

941

996

1052

1108

1165

1222

1279

1337

0,4

Bhp

2.79 E

3.41 F

4.12

4.93

5,85 G

6,87

8,02

9,29 H

10.69

12.23

0.6

Rpm Bhp

872 3.05

921 3.67 F

972 4.39

1024 5.20

1078 6.12 G

1132 7.16

1187 8.31

1243 9,59 H

1299 11.00

1355 12.55

(in. wg)

0.8

Rpm

914

958

1006

1055

1106

1158

1211

1265

1319

1374

Bhp

3,36

3.98

4,69

5,51

6.44

7.47

8,63

9,92

11.34

12.89

apm

958

F999

1042

G 1088

1136

1185

H1236

1288

1341

1394

1.0

Bhp

3.71

4.33

5.04

5.86

6.78

7.82

8.99

10.28

11,70

13,26

AIRFLOW 1,2

(Cfm)

6,500

7,000

7,500

8,000

8,500

9,000

9,500

10,000

10,500

11,000

11,500

12,000

12,500

Rpm

1005

1041

1080 5.43

1122 6.24

1167 7.16

1214 8.21 H

1262 9.37

1312 10,66

1363 12.09

Bhp Rpm

4.12 1052

4.72 1084

AVAILABLE EXTERNAL STATIC PRESSURE

1.4 1,6

Bhp Rpm Bhp

4.57 1100 5.06 G

5.16 G 1128 5.64

6,33

7.13

8.04

9,07

10.23

11.52

(in, wg)

1,8

Rpm

1148

1172

6.84

7.63

8.53

9.56

10.71

12.00

1119

1158

1200

1244

1290

1338

1387

5.86 1160

6.66 1195

7.58 H1234

8.62 1275

9.78 1319

11,08 1365

12,51

1201

H1233

1269

1308

1349

1392

Bhp Rpm

5.60 1195

6.17 1217

H1242

1272

1304

1340

1379

2.0

Bhp

6.17

6.74

7.40

8.17

9.06

10,08

11,23

LEGEND

Bhp -- Brake Horsepower Input to Fan

Boldface indicates field-supplied motor/drive required.

NOTES:

1. Motor drive ranges:

(E) Low Range: 687-873 rpm, 5.75 bhp

(F) Mid-Low Range: 805-1007 rpm, 5.75 bhp

(G) Mid-High Range: 941-1176 rpm, 8.63 bhp

(H) High Range: 1014-1297 rpm, 11.50 bhp

All other rpms require field-supplied motor or drive.

2. See page 36 for general fan performance notes.

AIRFLOW

(Cfm)

6,500

7,000

7,500

8,000

8,500

9,000

9,500

10,000

10,500

11,600

11,500

12,000

12,500

Table 22 -- Fan Performance -- 48PGF28 -- Horizontal Supply and Return Units

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

Rpm

799

856

913

971

1029

1087

1145

1203

1261

1320

1378

0,2

Bhp

2.58

3.19

3.89

4.69

5.60

6.62

7.75

9.01

10.40

11,93

13,61

Rpm

833

687

941

996

1052

1108

1165

1222

1279

1337

0.4

Bhp

2.79

3.41

4.12

4.93

5.85

6.87

8.02

9.29

10.69

12.23

Rpm

E 872

921

F972

1024

G 1076

1132

1187

H 1243

1299

1355

0.6

Bhp

3,05

3,67

4,39

5,20

6,12

7,16

8,31

9,59

11.00

12.55

Rpm

914

F 958

1006

1055

G 1106

1158

1211

H1265

1319

1374

0.8

Bhp

3.36

3.98

4.69

5.51

6.44

7.47

8.63

9.92

11.34

12.89

Rpm

958

F999

1042

G 1068

1136

1185

H 1236

1268

1341

1394

1.0

Bhp

3.71

4.33

5.04

5.86

6.78

7.82

8.99

10.28

11.70

13.26

AIRFLOW

(Cfm) 1.2 1.8 2.0

6,500

7,000

7,500

8,000

8,500

9,000

9,500

10,000

10,500

11,000

11,500

12,000

12,500

Bhp --

Rpm Bhp

1005 4.12

1041 4.72

Rpm

1052

1084

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

1.4 1.6

Bhp Rpm Bhp Rpm

4.57 1100 5.06 1148

5.16 G 1128 5.64 1172

1160

1195

H 1234

1275

1319

1365

6.33 1201

7.13 H 1233

8.04 1269

9.07 1306

10.23 1349

11.52 1392

6.84

7.63

8.53

9,56

10.71

12.00

1080 5.43

G1122 6.24

1167 7.16

1214 8.21

H1262 9.37

1312 10.66

1363 12,09

LEGEND

B_ke HorsepowerlnputtoFan

1119

1156

1200

1244

1290

1338

1387

5.86

6.66

7.58

8.62

9.78

11.08

12.51

Bhp Rpm

5.80 1195

6.17 1217

H1242

1272

1304

1340

1379

Bhp

6.17

6.74

7.40

8.17

9.06

10.08

11.23

Boldface indicates field-supplied motor/drive required.

NOTES:

1. Motor drive ranges:

(E) Low Range: 687-873 rpm, 5.75 bhp

(F) Mid-Low Range: 605-1007 rpm, 5.75 bhp

(G) Mid-High Range: 941-1176 rpm, 8.63 bhp

(H) High Range: 1014-1297 rpm, 11.50 bhp

All other rpms require field-supplied motor or drive.

2. See below for general fan performance notes.

GENERAL NOTES FOR FAN PERFORMANCE DATA TABLES

1. Static pressure losses (i.e., economizer, electric heat, etc.) must be added

to external static pressure before entering Fan Performance table.

2. Interpolation is permissible. Do not extrapolate.

3. Fan performance is based on wet coils, clean filters, and casing losses.

See Accessory/FlOP Static Pressure information on page 39.

4. Extensive motor and drive testing on these units ensures that the full

horsepower range of the motor can be utilized with confidence. Using the

fan motors up to the bhp rating shown will not result in nuisance tripping or

premature motor failure. Unit warranty will not be affected.

5. Use of a field-supplied motor may affect wire size. Recalculate the unit

power supply MCA and MOCP if required. Contact the local Carrier repre-

sentative for details.

6. Use the following formula to calculate Input Watts:

Input Watts = Bhp x (746/motor effl)

Table 23 -- Power Exhaust Fan Performance -- 48PG20-28

AIRFLOW

(Cfm)

3250

3350

3450

3550

3650

3750

3850

3950

4050

4250

4450

4650

4850 -- --

5050 -- --

5250 -- --

5450 -- --

5650 -- --

5850 -- --

LEGEND

ESP--External Static Pressure

LOW SPEED

208 V 230,460,575V

ESP Bhp Watts ESP Bhp Watts

0.32 1.41 1580 0.70 1.49 1670

0.23 1.44 1610 0.63 1.52 1700

0.17 1.46 1635 0.59 1.55 1730

0.13 1.47 1645 0.56 1.56 1745

0.09 1.49 1665 0.53 1.58 1765

MEDIUM SPEED

208 V 230,460,575V

ESP Bhp Watts ESP Bhp Watts

0.60 1.51 1690 0.82 1.62 1810

0.55 1.54 1720 0.78 1.64 1840

0.49 1.56 1750 0.73 1.67 1870

0.43 1.59 1780 0.68 1.70 1900

-- 0.51 1.60 1790

-- 0.48 1.62 1810

-- 0.45 1.64 1835

-- 0.40 1.67 1865

0.39 1.62 1815 0.64 1.72 1930

0.33 1.64 1835 0.59 1.74 1950

0.27 1.66 1860 0.54 1.76 1975

0.22 1.68 1885 0.49 1.79 2000

0.17 1.74 1945 0.40 1.84 2060

0.00 1.79 2005 0.30 1.89 2115

-- -- -- 0.22 1.94 2170

-- -- -- 0.16 1.98 2215

-- -- -- 0.12 2.02 2260

HIGH SPEED

208 V 230,460,575V

ESP Bhp Watts ESP Bhp Wa_s

0.60 1,85 2070 0.73 1.99 2230

0.56 1,87 2095 0.69 2.01 2255

0.51 1.89 2120 0.65 2.04 2280

0.41 1.92 2145 0.56 2.06 2310

0.31 1.97 2205 0.47 2.12 2370

0.20 2.04 2280 0.37 2.19 2450

0.11 2.09 2335 0.30 2.24 2505

0.04 2.13 2385 0.23 2.28 2555

-- -- -- 0.17 2.33 2610

-- -- -- 0.12 2.38 2665

-- -- -- 0.07 2.40 2690

-- -- -- 0.04 2.42 2710

48PG

Table 24 -- Operation Air Quantity Limits

COOLING

Maximum Cfm

9,000

10,000

12,000

GAS HEAT

Minimum Cfm

High Heat (8 Cell)

5000 Medium Heat (8 Cell)

Low Heat (5 Cell)

High Heat (8 Cell)

5500 Medium Heat (8 Cell)

Low Heat (5 Cell)

High Heat (8 Cell)

6500 Medium Heat (8 Cell)

Low Heat (5 Cell)

*7000 cfm minimum recommended above 1.0 in. wg external static pressure.

HEATING

(NAT. GAS,

VERTICAL)

Minimum Cfm

5522

4977

4218

5522

4977

4218

5522

4977

4218

HEATING

(NAT. GAS,

HORIZONTAL)

Minimum Cfm

5522

4977

4218

5522

4977

4218

5470*

4977*

4218

HEATING

(PROPANE,

VERTICAL)

Minimum Cfm

5522

4480

4218

5522

4480

4218

5522

4480

4218

HEATING

(PROPANE,

HORIZONTAL)

Minimum Cfm

4920

4480

3796

4920

4480

3796

4920*

4480*

3796

Table 25 -- Evaporator Fan Motor Specifications

48PG ORIENTATION MOTOR P/N NOMINAL HP VOLTAGE MAX WATTS EFFICIENCY %MAX BHP MAX BkW MAX AMPS

HD60FK651 3.7 208 3698 85.8 4.25 3.17 10.6

HD60 FK651 3.7 230 3698 85.8 4.25 3.17 9.6

Low Vertical HD60 FK651 3.7 460 3698 85.8 4.25 3.17 4.8

HD60FK575 5 575 4900 87.5 5.75 4.29 6.1

HD60FK653 5 208 4900 87.5 5.75 4.29 16.7

HD60FK653 5 230 4900 87.5 5.75 4.29 15.2

Mid-Low Vertical HD60FK653 5 460 4900 87.5 5.75 4.29 7.6

HD60FK575 5 575 4900 87.5 5.75 4.29 6.1

HD62FK652 7.5 208 7267 88.5 8.63 6.43 24.2

HD62FK652 7.5 230 7267 88.5 8.63 6.43 22

Mid-High Vertical HD62FK652 7.5 460 7267 88.5 8.63 6.43 11

HD62FK576 7.5 575 7267 88.5 8.63 6.43 9

HD64FK651 10 208 9582 89.5 11.5 8.58 30.8

HD64FK651 10 230 9582 89.5 11.5 8.58 28

High Vertical HD64 FK651 10 460 9582 89.5 11.5 8.58 14

HD64FK575 10 575 9582 89.5 11.5 8.58 11

20 N/A N/A 208 N/A N/A N/A N/A N/A

N/A N/A 230 N/A N/A N/A N/A N/A

Low Horizontal N/A N/A 460 N/A N/A N/A N/A N/A

N/A N/A 575 N/A N/A N/A N/A N/A

HD60FK651 3.7 208 3698 85.8 4.25 3.17 10.6

HD60FK651 3.7 230 3698 85.8 4.25 3.17 9.6

Mid-Low Horizontal HD60 FK651 3.7 460 3698 85.8 4.25 3.17 4.8

HD60FK575 5 575 4900 87.5 5.75 4.29 6.1

HD60FK653 5 208 4900 87.5 5.75 4.29 16.7

HD60FK653 5 230 4900 87.5 5.75 4.29 15.2

Mid-High Horizontal HD60FK653 5 460 4900 87.5 5.75 4.29 7.6

HD60FK575 5 575 4900 87.5 5.75 4.29 6.1

HD62FK652 7.5 208 7267 88.5 8.63 6.43 24.2

HD62FK652 7.5 230 7267 88.5 8.63 6.43 22

High Horizontal HD62FK652 7.5 460 7267 88.5 8.63 6.43 11

HD62FK576 7.5 575 7267 88.5 8.63 6.43 9

Table 25 -- Evaporator Fan Motor Specifications (cont)

48PG ORIENTATION MOTOR P/N NOMINAL HP VOLTAGE MAX WATTS EFFICIENCY %MAX BHP MAX BkW MAX AMPS

HD6OFK651 3.7 208 3698 85.8 4.25 3.17 10.6

HD60FK651 3.7 230 3698 85.8 4.28 3.17 9.6

Low Vertical HD60FK651 3.7 460 3698 85.8 4.28 3.17 4.8

HD60FK575 5 575 4900 87.5 5.75 4.29 6.1

HD60FK653 5 208 4900 87.8 5.75 4.29 16.7

HD60FK653 5 230 4900 87.5 5.75 4.29 15.2

Mid-Low Vertical HD60FK653 5 460 4900 87.5 5.75 4.29 7.6

HD60FK575 5 575 4900 87.5 5.75 4.29 6.1

HD62FK652 7.5 208 7267 88.5 8.63 6.43 24.2

HD62FK652 7.5 230 7267 88.8 8.63 6.43 22

Mid-High Vertical HD62FK652 7.5 460 7267 88.5 8.63 6.43 11

HD62FK576 7.5 575 7267 88.5 8.63 6.43 9

HD64FK651 10 208 9582 89.5 11.5 8.58 30.8

HD64FK651 10 230 9582 89.5 11.5 8.58 28

High Vertical HD64FK651 10 460 9582 89.8 11.5 8.58 14

HD64FK578 10 578 9582 89.8 11.5 8.58 11

24 N/A N/A 208 N/A N/A N/A N/A N/A

N/A N/A 230 N/A N/A N/A N/A N/A

Low Horizontal N/A N/A 460 N/A N/A N/A N/A N/A

N/A N/A 575 N/A N/A N/A N/A N/A

HD60FK651 3.7 208 3698 85.8 4.28 3.17 10.6

HD60FK651 3.7 230 3698 85.8 4.25 3.17 9.6

Mid-Low Horizontal HD60FK651 3.7 460 3698 85.8 4.28 3.17 4.8

HD60FK575 5 575 4900 87.5 5.75 4.29 6.1

HD60FK653 5 208 4900 87.5 5.75 4.29 16.7

HD60FK653 5 230 4900 87.8 5.75 4.29 15.2

Mid-High Horizontal HD60FK653 5 460 4900 87.5 5.75 4.29 7.6

HD60FK575 5 875 4900 87.5 5.75 4.29 6.1

HD62FK652 7.5 208 7267 88.5 8.63 6.43 24.2

HD62FK652 7.5 230 7267 88.5 8.63 6.43 22

High Horizontal HD62FK652 7.5 460 7267 88.8 8.63 6.43 11

HD62FK576 7.5 578 7267 88.8 8.63 6.43 9

HD60FK653 5 208 4900 87.5 5.75 4.29 16.7

HD60FK653 5 230 4900 87.5 5.75 4.29 15.2

Low Vertical HD60FK653 5 460 4900 87.5 5.75 4.29 7.6

HD60FK575 5 575 4900 87.5 5.75 4.29 6.1

HD60FK653 5 208 4900 87.8 5.75 4.29 16.7

HD60FK653 5 230 4900 87.8 5.75 4.29 15.2

Mid-Low Vertical HD60FK653 5 460 4900 87.8 5.75 4.29 7.6

HD60FK575 5 875 4900 87.5 5.75 4.29 6.1

HD62FK652 7.5 208 7267 88.5 8.63 6.43 24.2

HD62FK652 7.5 230 7267 88.5 8.63 6.43 22

Mid-High Vertical HD62FK652 7.5 460 7267 88.5 8.63 6.43 11

HD62FK576 7.5 578 7267 88.8 8.63 6.43 9

HD64FK651 10 208 9582 89.5 11.5 8.58 30.8

HD64FK651 10 230 9582 89.5 11.5 8.58 28

High Vertical HD64FK651 10 460 9582 89.5 11.5 8.58 14

HD64FK575 10 575 9582 89.5 11.5 8.58 11

28 HD60FK653 5 208 4900 87.8 5.75 4.29 16.7

HD60FK653 5 230 4900 87.5 5.75 4.29 15.2

Low Horizontal HD60FK653 5 460 4900 87.5 5.75 4.29 7.6

HD60FK575 5 575 4900 87.5 5.75 4.29 6.1

HD60FK653 5 208 4900 87.5 5.75 4.29 16.7

HD60FK653 5 230 4900 87.8 5.75 4.29 15.2

Mid-Low Horizontal HD60FK653 5 460 4900 87.8 5.75 4.29 7.6

HD60FK575 5 875 4900 87.5 5.75 4.29 6.1

HD62FK652 7.5 208 7267 88.5 8.63 6.43 24.2

HD62FK652 7.5 230 7267 88.5 8.63 6.43 22

Mid-High Horizontal HD62FK652 7.5 460 7267 88.5 8.63 6.43 11

HD62FK576 7.5 578 7267 88.8 8.63 6.43 9

HD64FK651 10 208 9582 89.5 11.5 8.58 30.8

HD64FK651 10 230 9582 89.5 11.5 8.58 28

High Horizontal HD64FK651 10 460 9582 89.5 11.5 8.58 14

HD64FK575 10 575 9582 89.5 11.5 8.58 11

NOTES:

1. Extensive motor and electrical testing ensures that the motors can be uti-

lized with confidence up to the maximum applied bhp, watts, and amps.

Using the fan motor up to the maximum ratings shown will not result in nui-

sance tripping or premature motor failure. Unit warranty will not be affected.

2. All indoor-fan motors 5 hp and larger meet the minimum efficiency require-

ments as established by the Energy Policy Act of 1992 (EPACT) effective

October 24, 1997.

Table 26 -- Accessory/FlOP Static Pressure (in. wg)* -- 48PG20-28

CFM

COMPONENT 4,000 4,500 5,000 5,500 6,000 6,500 7,000 7,500 8,000

Economizer 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10

CFM

COMPONENT 8,500 9,000 9,500 10,000 10,500 11,000 11,500 12,000

Economizer 0.11 0.12 0.13 0.15 0.16 0.17 0.19 0.20

LEGEND

FlOP -- Factory-Installed Option

*The static pressure must be added to the external static pressure. The sum and the evaporator

entering-air cfm should then be used in conjunction with the Fan Performance tables to deter-

mine blower rpm and watts.

UNIT

48PG

20 and 24

(230 and 460 volt)

20 and 24

(575 volt)

(all voltages)

LEGEND

rda -- not available

Table 27 Fan Rpm at Motor Pulley Settings*

DRIVE 01/2 1 11/2 221/2 3

Low 685 706 727 749 770 791 812

Mid-Low 949 970 992 1013 1035 1056 1078

Mid-High 941 961 980 1000 1019 1039 1059

High 1014 1038 1061 1085 1108 1132 1156

Low n/a n/a n/a n/a n/a n/a n/a

Mid-Low 896 924 951 979 1006 1034 1062

Mid-High 1113 1138 1163 1188 1213 1238 1264

High 1096 1116 1137 1157 1177 1197 1218

Low 751 768 785 802 819 836 853

Mid-Low 949 970 992 1013 1035 1056 1078

Mid-High 941 961 980 1000 1019 1039 1059

High 1014 1038 1061 1085 1108 1132 1156

Low n/a n/a n/a n/a n/a n/a n/a

Mid-Low 873 893 912 932 951 971 991

Mid-High 1113 1138 1163 1188 1213 1238 1264

High 1096 1116 1137 1157 1177 1197 1218

Low 687 703 718 734 749 765 780

Mid-Low 805 822 839 856 872 889 906

Mid-High 941 961 980 1000 1019 1039 1059

High 1014 1038 1061 1085 1108 1132 1156

Low 687 703 718 734 749 765 780

Mid-Low 805 822 839 856 872 889 906

Mid-High 941 961 980 1000 1019 1039 1059

High 1014 1038 1061 1085 1108 1132 1156

MOTOR PULLEY TURNS OPEN

31/2 4 41/2 5 51/2 6

833 854 876 897 918 939

1099 1120 1142 1163 1185 1206

1078 1098 1117 1137 1156 1176

1179 1203 1226 1250 1273 1297

n/a n/a n/a n/a n/a n/a

1089 1117 1144 1172 1199 1227

1289 1314 1339 1364 1389 1414

1238 1258 1278 1299 1319 1339

869 886 903 920 937 954

1099 1120 1142 1163 1185 1206

1078 1098 1117 1137 1156 1176

1179 1203 1226 1250 1273 1297

n/a n/a n/a n/a n/a n/a

1010 1030 1049 1069 1088 1108

1289 1314 1339 1364 1389 1414

1238 1258 1278 1299 1319 1339

796 811 827 842 858 873

923 940 957 973 990 1007

1078 1098 1117 1137 1156 1176

1179 1203 1226 1250 1273 1297

796 811 827 842 858 873

923 940 957 973 990 1007

1078 1098 1117 1137 1156 1176

1179 1203 1226 1250 1273 1297

*Approximate fan rpm shown.

NOTE: Factory pulley speed setting is at 3 turns open.

Optional EconoMiSer IV -- See Fig. 23 for EconoMi$er

IV component locations. The optional EconoMi$er IV comes

from the facto UfiJlly wiled and assembled. No field wiring or

assembly is required for standard outdoor c_h'ybulb changeover

operation. Field wiling of accessory sensors is required for

different operational modes.

ECONOMI$ER [V STANDARD SENSORS

Outdoor Air Temperature (OAT) Sensor -- The outdoor air

temperature sensor is a 10 to 20 mA device used to measure the

outdoor-air temperature. The outdoor-air temperature is used to

determine when the EconoMi$er IV can be used for free

cooling. The sensor is factory-inst_flled on the EconoMiSer [V

in the outdoor airstream. See Fig. 24. The operating range of

temperature measurement is 40 to 100 E

Mixed-Air Temperature (MAT) Sensor -- The mixed-air

temperature sensor is a 3 K thermistor located at the outlet of

the indoor fan. See Fig. 24. This sensor is facto Uinstalled. The

operating range of temperature measurement is 0 ° to 158 E

The temperature sensor is a short probe with blue wires

running to it.

Outdoor Air Lockout Sensor -- The Economi$er IV is

equipped with an ambient temperature lockout switch located

in the outdoor airstream which is used to lock out the compres-

sors below a 42 F ambient temperature.

ECONOMISER IV CONTROLLER WIRING AND OPER-

ATIONAL MODES -- Determine the EconoMiSer IV control

mode before set up of the control. Some modes of operation may

lequile different sensors. Refer to N_ble 28. The EconoMi$er IV

is supplied from the factory with a mixed-air temperatme

sensor and an outdoor air temperature sensol: This allows for

operation of the EconoMiSer IV with outdoor air dry bulb

changeover control. Additional accessories can be added to

_fllow for different types of changeover control and operation

of the EconoMiSer IV and unit.

Outdoor D UBulb Changeover -- The standard controller is

shipped from the facto qconfigured for outdoor dry bulb

changeover control. The outdoor _firand mixed-tfir temperature

sensors tue included as stand_u'd. For this control mode, the out-

door temperature is compared to an adjustable set point selected

on the control. If the outdoor-air temperature is above the set

point, the EconoMi$er IV will adjust the outdoor-air dampers to

minimum position. If the outdoor-air temperature is below the

set point, the position of the outdoor-air &unpeLs will be con-

trolled to provided free cooling using outdoor all: When in this

mode, the LED next to the free cooling set point potenfiometer

will be on. The changeover temperature set point is controlled

by the free cooling set point potentiometer located on the con-

trol. The sc_fle on the potentiometer is A, B, C, and D. See

Fig. 25 for the corresponding temperature changeover values.

DAMPER

ASSEMBLY

WIRE

HARNESS

DAMPER

ACTUATOR

ECONOMIZER

BLOCK OFF

Fig. 23 -- EconoMiSer IV Component Locations (Exploded View)

Fig. 24 -- Sensor Locations (OAT and MAT)

19.

18- '''% LEDON

17-

16- -- - LED O FF

15-

E14-

13-

12-

11-

10-

LED ON

LED OFF -

40 45 50 55 60 65 70 75 80

DEGREES FAHRENHEIT

Fig. 25 -- Temperature Changeover Set Points

Table 28 -- EconoMi$er IV Sensor Usage

ECONOMI$ER IV WITH SINGLE

APPLICATION ENTHALPY SENSOR

Accessories Required

Outdoor Air Dry Bulb CRTEMPSN002A00 _

Differential Dry Bulb (2) CRTEMPSN002A00 _

Single Enthalpy None. The single enthalpy sensor is factory installed.

CRENTDIF004A00 _

Differential Enthalpy

CO2 for DCV Control using a

Wall-Mounted CO2 Sensor

CO2 for DCV Control using a

Duct-Mounted 002 Sensor

ECONOMI$ER IV WITH OUTDOOR AIR

DRY BULB SENSOR

Accessories Required

None. The outdoor air dry bulb sensor is factory installed.

CRTEMPSN002A00 _

HH57AC078

and

CRENTDIF004A00 _

33ZCSENCO2

33ZCSENCO2t

and CRCBDIOX005A00tt

33ZCASPCO2**

33ZCSENCO2

33ZCSENCO2t

and CRCBDIOX005A00tt

33ZCASPCO2**

-CRENTDIF004A00 and CRTEMPSN002A00 accessories are used on many different base units. As such, these kits may contain parts that will not be

needed for installation.

t33ZCSENCO2 is an accessory CO2 sensor.

-'33ZCASPCO2 is an accessory aspirator box required for duct-mounted applications.

ttCRCBDiOX005A00 is an accessory that contains both 33ZCSENCO2 and 33ZCASPCO2 accessories.

Differential Dry Bulb Control -- For differentM c_h-ybulb

control tile stan_u_d outdoor dry bulb sensor is used in conjunc-

tion with an addition',fi accesso U&-y bulb sensor (part number

CRTEMPSN002A00). Tile accesso Usensor must be mounted

in the return ail_tream. Wiring is provided in the EconoMiSer

IV wiling htuness. See Fig. 26.

In this mode of operation, the outdoor-air temperature is

compared to the leturn-air temperature and the lower tempera-

ture airstream is used for cooling. When using this mode of

changeover control, turn the enthalpy set point potentiometer

fully clockwise to the D setting.

Outdoor Enthalpy Changeover -- For enth_dpy contl_)l, acces-

sory enthalpy sensor (pa-t number HH57AC078) is required.

Replace the standm_d outdoor c_h-ybulb temperatule sensor with

the accesso Uenthalpy sensor in the same mounting location.

When the outdoor air enthalpy rises above the outdoor enthalpy

changeover set point, the outdoor-air &tmper moves to its mini-

mum position. The outdoor enthalpy changeover set point is set

with the outdoor enthalpy set point potentiometer on the

EconoMiSer IV controllel: The set points tu_eA, B, C, and D.

See Fig. 27. The factory-installed 620-ohm jumper must be in

place across termin_ds SR and + on the EconoMiSer IV control-

lel: See Fig. 26.

Differential Enthalpy Control -- For differentM enthalpy

control, the EconoMiSer IV controller uses two enthalpy

sensors (HH57AC078 and CRENTDIF004A00), one in the

outside air and one in the return air duct. The EconoMiSer IV

controller compares the outdoor air enthalpy to the return air

enthalpy to determine EconoMiSer IV use. The controller

selects the lower enthalpy air (return or outdoor) for cooling.

For example, when the outdoor air has a lower enthalpy than

the return ail: the EconoMiSer IV opens to bring in outdoor air

for free cooling.

Replace the standard outside air dry bulb temperature

sensor with the accesso Uenthalpy sensor in the same mount-

ing location. Mount the return air enthalpy sensor in the return

air duct. Wiring is provided in the EconoMiSer IV wiring

harness. See Fig. 26. The outdoor enth_dpy changeover set

point is set with the outdoor enthalpy set point potentiometer

on the EconoMi$er IV controllel: When using this mode of

changeover control, turn the enthalpy setpoint potentiometer

fully clockwise to the D setting. See Fig. 28.

Indoor Air Quality (IAQ) Sensor Input -- Tile IAQ input

can be used for demand control ventilation control based on the

level of CO2 measured in the space or return air duct.

Mount the optional IAQ sensor according to manufacturer

specifications. The IAQ sensor should be wired to the AQ and

AQI terminals of the controllel: Adjust the DCV (demand

controlled ventilation) potentiometel_ to correspond to the

DCV voltage output of the indoor air quality sensor at the

user-determined set point. See Fig. 29.

If a separate field-supplied transformer is used to power the

IAQ sensor, the sensor must not be grounded or the

EconoMiSer IV control board will be dmnaged.

Exhaust Set Point Adjustment -- The exhaust set point will

determine when the exhaust fan runs based on dmnper position

(if accessory power exhaust is insLdled). The set point is modi-

fied with the Exhaust Fan Set Point (EXH SET) potentiometel:

See Fig. 28. The set point represents the damper position above

which the exhaust fans will be turned on. When there is a c_dl

for exhaust, the EconoMiSer IV controller provides a 45 _+15

second delay before exhaust fan activation to allow the damp-

ers to open. This delay allows the damper to leach the appro-

priate position to avoid unnecessa-y fan overload.

Fig. 26 -- EconoMiSer IV Wiring

CONTROL CONTROL POINT

CURVE APPROX. °F (°C)

AT 50% RH

A 73 (23)

B 70 (21)

C 67(19)

D 63(17)

85 90 95 100 105 110

(29) (32) (35) (38) (41) (43)

7-.

HIGH LIMIT

\ CURVE

35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110

(2) (4) (7) (10) (13) (16) (18) (21) (24) (27) (29) (32) (35) (38) (41) (43)

APPROXIMATE DRY BULB TEMPERATURE i F (C)

Fig. 27 -- Enthalpy Changeover Set Points

EXHAUST

FAN SET POINT

LED LIGHTS

WHEN EXHAUST

CONTACT IS MADE

MINIMUM DAMPER

POSITION SETTING

MAXIMUM DAMPER

DEMAND CONTROL

VENTILATION SET POINT

LED LIGHTS WHEN

DEMAND CONTROL

VENTILATION INPUT

IS ABOVE SET POINT

DEMAND CONTROL

VENTILATION SET POINT

LED LIGHTS WHEN

OUTDOOR AIR IS

SUITABLE FOR

FREE COOLING ENTHALPY

CHANGEOVER SET POINT

Fig. 28 -- EconoMi$er IV Controller Potentiometer

and LED Locations

6000

5000

z4000

3000

2000

Z 1000

CO2 SENSOR MAX RANGE SEqq-ING

_ +6oopp_I

_1000 ppm

_1100 ppm

23 45678

DAMPER VOLTAGE FOR MAX VENTILATION RATE

Fig. 29 -- CO2 Sensor Maximum Range Setting

Minimum Position Control -- There is a minimum &tmper

position potentiometer on the EconoMiSer IV controllel: See

Fig. 28. The minimum dmnper position maintains the mini-

mum airflow into the building during the occupied period.

When using demand ventilation, the minimum damper

position represents the minimum ventilation position for VOC

(volatile organic compounds) ventilation requirements. The

maximum demand ventilation position is used for fully occu-

pied ventilation.

When demand ventilation control is not being used, the

minimum position potentimeter should be used to set the occu-

pied ventilation position. Tile maximum demand ventilation

position should be turned liflly clockwise.

Adjust the minimum position potentiometer to _dlow the

minimum amount of outdoor air. as required by local codes, to

enter the building. Make minimum position adjustments with

at least 10° F temperature difference between the outdoor and

return-air temperatures. To determine the minimum position

setting, perfoml the following procedure:

1. Calculate the appropriate mixed air temperature using the

following formula:

(To x OA) + (TR x RA) = TM

To = Outdoor-Air Temperature

OA = Percent of Outdoor Air

TR = Return-Air Temperature

RA = Percent of Return Air

TM = Mixed-Air Temperature

As an example, if local codes require 10% outdoor air

during occupied conditions, outdoor-air temperature is

60 IF.and return-air temperature is 75 IF.

(60 x. 10) + (75 x .90) = 73.5 F

2. Disconnect the mixed air sensor from termimfls T and TI.

3. Ensure that the factory-installed jumper is in place across

terminals P and PI. If remote &tmper positioning is being

used, make sure that the terminals are wired according to

Fig. 26 and that file minimum position potentiometer is

turned liflly clockwise.

4. Connect 24 vac across terminals TR and TRI.

5. Cmefully adjust the minimum position potentiometer

until the measured mixed air temperature matches the

c_dculated v_due.

6. Reconnect the mixed air sensor to terminals T and TI.

Remote control of the EconoMiSer IV dmnper is desirable

when requiring additional temporary ventilation. If a

field-supplied remote potentiometer (Honeywell p_ut number

$963B1128) is wired to the EconoMiSer IV controller, the

minimum position of the damper can be controlled from a re-

mote location.

To control the minimum &tmper position remotely, remove

the factory-installed jumper on the P and PI temlinals on the

EconoMiSer IV controllel: Wire the field-supplied potentiome-

ter to the P and PI termimds on file EconoMiSer IV controllel:

See Fig. 26.

Damper Movement -- When the EconoMiSer 1V board re-

ceives initial powel: it can take the damper up to 21/2 minutes

before it begins to position itself. After the initial positioning,

subsequent changes to &tmper position will take up to 30 sec-

onds to initiate. Damper movement from full open to full

closed (or vice velsa) takes 21/2 minutes.

Thermostats -- The EconoMiSer IV control works with con-

ventional thermostats that have a YI (cool stage 1), Y2 (cool

stage 2), WI (heat stage 1), W2 (heat stage 2), and G (fan). The

EconoMiSer IV control does not support space temperature

sensors like the T55 or T56. Connections are made at the tiler-

mostat terminal connection board located in the main control

box.

Demand Control Ventilation -- When using the Econo-

MiSer IV for demand control ventilation, there are some equip-

ment selection criteria which should be considered. When

selecting the heat capacity and cool capacity of the equipment,

the maximum ventilation rate must be ev_duated for design

conditions. The maximum &tmper position must be calculated

to provide the desired fresh all:

Typically the maximum ventilation rate will be about 5 to

10% more than the typical cfm required per pelion, using nor-

mid outside air design criteria.

A proportional anticipatory strategy should be taken with

the following conditions: a zone with a large area, varied

occupancy, and equipment that cannot exceed the required

ventilation rate at design conditions. Exceeding file required

ventihttion rate means the equipment can condition air at a

maximum ventilation rate that is greater than file required

ventilation rate for maximum occupancy. A proportional-

anticipatory strategy will cause tile fresh air supplied to

increase as file room CO2 level increases even though the CO2

set point has not been reached. By the time the CO2 level

reaches the set point, the &tmper will be at maximum ventila-

tion and should mainttfin the set point.

In order to have the CO2 sensor control tile economizer

&tmper in this manner, first determine the damper voltage

output for minimum or base ventilation. Base ventilation is the

ventilation required to remove contaminants during unoccu-

pied periods. The following equation may be used to determine

tile percent of outside-air entering the building for a given

&tmper position. For best results there should be at least a

10 degree difference in outside and return-air temperatures.

(To x OA) + (TR x RA) = TM

To = Outdoor-Air Temperature

OA = Percent of Outdoor Air

TR = Return-Air Temperature

RA = Percent of Return Air

TM = Mixed-Air Temperature

Once base ventilation has been determined, set the mini-

mum &tmper position potentiometer to the correct position.

The same equation can be used to determine the occupied or

maximum ventihttion rote to the building. For exmnple, an

output of 3.6 volts to the actuator provides a base ventilation

rate of 5% and an output of 6.7 volts provides tile maximum

ventihttion rate of 20% (or base plus 15 cfm per person). Use

Fig. 29 to determine the maximum setting of the CO2 sensor.

For example, a 1100 ppm set point relates to a 15 cfin per

person design. Use the 1100 ppm curve on Fig. 29 to find the

point when the CO2 sensor output will be 6.7 volts. Line up the

point on the graph with the left side of the chm't to determine

timt the range configuration for the CO2 sensor should be 1800

ppm. The EconoMiSer IV controller will output tile 6.7 volts

from the CO2 sensor to the actuator when the CO2 concentra-

tion in the space is at 1100 ppm. The DCV set point may be left

at 2 volts since the CO2 sensor voltage will be ignored by the

EconoMiSer IV controller until it rises above the 3.6 volt

setting of the minimum position potentiometer

Once tile fully occupied damper position has been deter-

mined, set the maximum damper demand control ventilation

potentiometer to this position. Do not set to the maximum

position as this can result in over-ventilation to the space and

potential high-humidity levels.

CO.2 Sensor Configuration -- The CO2 sensor has preset

stan&trd voltage settings that can be selected anytime after the

sensor is powered up. See Table 29.

Use setting 1 or 2 for Carrier equipment. See Table 29.

1. Press Clear and Mode buttons. Hold at least 5 seconds

until the sensor enters the Edit mode.

2. Press Mode twice. The STDSET Menu will appem:

3. UsetheUp/Downbuttontoselectthepresetnumbel:See

Table29.

4. PressEntertolockinfileselection.

5. PressModetoexitandresumenormaloperation.

ThecustomsettingsoftheCO2sensorcanbechangedany-

timeafterthesensorisenergized.Followthestepsbelowto

changethenon-standardsettings:

1. PressCletuandModebuttons.Holdatleast5 seconds

untilthesensorenterstheEditmode.

2. PressModetwice.TheSTDSETMenuwillappeal:

3. UsetheUp/DownbuttontotoggletotheNONSTDmenu

andpressEnter.

4. UsetheUp/Downbuttontotogglethrougheachofthe

ninevmiables,startingwithAltitude,untilfiledesired

settingisreached.

5. PressModetomovethroughthevmiables.

6. PressEntertolockin theselection,thenpressModeto

continuetothenextvariable.

Dehumidification of Fresh Air with DCV Control -- Infor-

mation from ASHRAE (American Society of Heating,

Refrigeration, and Air Conditioning Engineers) indicates that

the largest humidity load on tiny zone is the fresh air intro-

duced. For some applications, a device such as a 62AQ energy

recovery unit is added to reduce the moisture content of the

fiesh air being brought into the building when the enthalpy is

high. In most cases, file norm_d heating and cooling processes

are more than adequate to remove the humidity loads for most

commercial applications.

This makes file control of the of the dehumidification device

simple when using the enthalpy or differenti_d enthalpy sensol:

The enth_dpy sensor or differenti_d enthalpy sensor is installed

on the equipment to determine economizer operation. The

high enthalpy signal from the enth_dpy sensor or differenti_d

enthalpy sensor can be used to turn on the outdoor air moisture

removal device any time fresh air is required for the space.

The energy recovery device should be sized for maximum

latent and sensible conditioning at maximum ventilation on a

design &ly. A calculation for leaving-air temperature on a low

ambient, low ventilation day should _flsobe done to determine

the mixed-air temperature of the return and pre-conditioned

outside ail: The design should produce an air temperature

somewhat netu room conditions to prevent reheat of the air

mixture. The energy recovery device should be interlocked

with the heat to turn off the device when in the heat mode.

Operating Sequence

COOLING. UNITS WITHOUT ECONOMIZER -- When

the thermostat calls for one stage of cooling, YI and G are en-

ergized. The indoor-fan contactor (IF(;_) and compressor con-

tactor(s) (C.AI and C.BI on three-compressor units or C.AI

only on two-compressor units), and outdoor-fan contactors

(OFCI and OFC2 when outdoor temperature is above LTS set-

ting) are energized and the indoor-fan motor, compressor(s)

(AI and BI on three compressor units or AI only on two-

compressor units), and outdoor fans controlled by OFCI are

stinted. If the outdoor temperature is above the setting of the

low temperature switch, the outdoor fans controlled by OFC2

are _dso stmted.

If more cooling is required, the therlnostat will cMl for a

second stage of cooling, energizing Y2. This will _fllow relay

CRI to energize, which in turn energizes the compressor

contactor (C.CI on three-compressor units or C.BI on

two-compressor units). The second stage compressor (CI on

three-compressor units or B I on two-compressor units is then

stmtedi

HEATING. UNITS WITHOUT ECONOMIZER

NOTE: The 48PG20-28 units have 2 stages of heat.

When the thermostat calls for heating, power is sent to W

on file [GC (integrated gas unit controller) board. An LED

(light-emitting diode) on the IGC bomd will be on during nor-

mifl operation. A check is made to ensure that the rollout

switch and limit switch are closed and the induced-draft motor

is running. The induced-di'aft motor is then energized, and

when speed is proven with the hall effect sensor on the motor.

the ignition activation period begins. The burners will ignite

within 5 seconds.

If the burners do not light, there is a 22-second delay before

another 5-second attempt. If the burners still do not light, this

sequence is repeated for 15 minutes. After the 15 minutes have

elapsed, if the burners still have not lit, heating is locked out.

To reset the control, break 24-v power to the thermostat.

Table 29 -- 002 Sensor Standard Settings

ANALOG

OUTPUT

SETTING

EQUIPMENT

Interface w/Standard

Building Control System

Economizer

Health & Safety

9 Parking/Air Intakes/

Loading Docks

LEGEND

PPM -- Parts Per Million

OUTPUT

Proportional

Exponential

Proportional

Exponential

Proportional

VENTILATION

RATE

(cfm/Pereon)

Any

0-10V

4-20 mA

2-10V

7-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

CO2

CONTROLRANGE

(ppm)

0-2000

0-1100

0- 900

0-1100

0- 900

0-9999

0-2000

OPTIONAL

RELAY SETPOINT

(ppm)

1000

1100

900

1100

900

5000

700

RELAY

HYSTERESIS

(ppm)

5O0

When ignition occurs the IGC board will continue to moni-

tor the condition of the rollout and limit switches, the hall effect

sensol: as well as the flame sensor. If the unit is controlled

through a morn thermostat set for fan auto., 45 seconds after

ignition occurs, the indoor-fan motor will be energized (and the

outdoor-tdr dampers will open to their minimum position). If

for some leason the overtemperature limit opens prior to the

start of the indoor fan blower, on the next attempt, the

45-second delay will be shortened to 5 seconds less than the

time fi_m initiation of heat to when the limit tripped. Gas will

not be interrupted to the burners and heating will continue.

Once modified, the fan on delay will not change back to

45 seconds unless power is reset to the control.

When additional heat is required, W2 closes and initiates

power to the second stage of the main gas valve. When the

thermostat is satisfied, WI and W2 open and the gas valve

closes, interrupting the flow of gas to the main burners. If the

call forWl lasted less than 1 minute, the heating cycle will not

terminate until 1 minute after WI became active. If the unit is

controlled through a room thermostat set for fan auto., the

indoor-fan motor will continue to operate for an additional

45 seconds then stop (and the outdoor-air dmnpers will close).

If the overtemperature limit opens after the indoor motor is

stopped within 10 minutes of WI becoming inactive, on the

next cycle the time will be extended by 15 seconds. The

maximum delay is 3 minutes. Once modified, the fan off delay

will not change back to 45 seconds unless power is reset to

the control.

A LED indicator is provided on the IGC to monitor opera-

tion. The IGC is located by removing the side panel and view-

ing the IGC through the view port located in the control box

access panel. During normal operation, the LED is continuous-

ly on. For information on tmubleshoofing refer to page 57.

COOLING. UNITS WITH ECONOMI$ER IV -- When free

cooling is not available, the compressol_ will be controlled by

the zone thermostat. When fiee cooling is available, the

outdoor-air damper is modulated by the EconoMiSer IV

control to provide a 50 to 55 F mixed-air temperature into the

zone. As the mixed-tdr temperature fluctuates above 55 or

below 50 E the dampers will be modulated (open or close) to

bring the mixed air temperature back within control.

If mechanical cooling is utilized with free cooling, the

outdoor-air damper will maintain its current position at the time

the compressor is started. If the increase in cooling capacity

causes the mixed-tdr temperature to di'op below 45 E then the

outdoor-tdr dmnper position will be decreased to the minimum

position. If the mixed-air temperature continues to fall, the

outdoor-air damper will close. Control returns to normal once

the mixed-air temperature rises above 48 E

If optional power exhaust is installed, as the outdoor-air

damper opens and closes, the power exhaust fans will be ener-

gized and deenergized.

If field-installed accesso UCO2 sensors are connected to the

EconoMiSer IV control, a demand controlled ventilation strate-

gy will begin to operate. As the CO*_level in the zone increases

above the CO2 set point, the minimum position of the damper

will be increased proportionally. As the CO2 level decreases

because of the increase in fresh all: the outdoor-air damper will

be proportionally closed.

For EconoMiSer IV operation, them must be a thermostat

call for the fan (G). This will move the damper to its minimum

position.

When the EconoMiSer IV control is in the occupied mode

and a call for cooling exists (YI on the thermostat), the control

will first check for indoor fan operation. If the fan is not on,

then cooling will not be activated. If the fan is on, then the

control will open the EconoMiSer IV dmnper to the minimum

position.

On the initkd power to the EconoMiSer [V control, it will

take the dmnper up to 21/2 minutes before it begins to position

itself. Any change in damper position will take up to 30 sec-

onds to initiate. Damper movement from full closed to full

open (or vice versa) will take between 11/2and 21/2 minutes.

If free cooling can be used as determined fi_m the appropri-

ate changeover command (switch, dry bulb, enthalpy curve,

differential dry bulb, or differential enthalpy), then the control

will modulate the dampers open to maintain the mixed-air tem-

perature set point at 50 to 55 E

If there is a further demand for cooling (cooling second

stage -- Y2 is energized), then the control will bring on

compressor stage 1 to maintain the mixed-air temperature set

point. The EconoMiSer IV damper will be open at maximum

position. EconoMiSer IV operation is limited to a single

compressor

HEATING UNITS WITH ECONOMI$ER IV -- When

the room temperature calls for heat, the heating controls am

energized as described in the Heating, Units Without Econo-

mizer section. The IFM is energized and the EconoMi$er IV

damper modulates to the minimum position. When the thermo-

stat is satisfied and Wl and W2 are deenergized, the IFM

continues to ran, and the economizer damper modulates to the

minimum position.

SUBCOOLER HEAT EXCHANGER (SHX) -- The purpose

of the subcooler heat exchanger (SHX) and the subcooler TXV

is to increase the capacity of the evaporator by sending

subcooled liquid refrigerant into the evaporatol: Normally, the

condenser subcools the liquid refrigerant by approximately

10 F. The SHX adds another 10 F to 15 F degrees of subcooling

before the refrigerant reaches the evaporator This allows the

refrigerant to absorb more heat from the mixed ail. thereby

providing more cooling capacity.

The subcooler fimctions by taking a small percentage of the

high pressure, low temperature liquid refrigerant which exits

the condenser and converting it into a low pressure, low tem-

perature gas. This is accomplished by using the subcooler

TXV. The gas is then routed through a reverse-flow heat

exchanger (SHX), which transfers heat from the remaining

liquid refrigerant in the liquid line to the reverse flow gas

refrigerant. The moderate temperature gas is then sent to the

compressor to complete the loop and the cooler liquid refriger-

ant continues its normal path to the main TXV and the

evaporator See Fig. 30.

SUBCOOLER

COMPRESSOR

SUBCOOLERTXV

MAIN_

Fig. 30 -- Subcooler Operation

SERVICE

Before performing service or maintenance operations on

unit, turn off main power switch to unit. Electrical shock

could cause personal injury.

Puron® (R-410A) refiiger_mt systems operate at higher

pressures than standard R-22 systems. Do not use R-22

service equipment or components on Puron refrigerant

equipment. If service equipment is not rated for Puron

refrigerant, equipment &image or personal injury may

result.

I. Improper inst_fllation, adjustment, _flteration, service,

or maintenance ctm cause property dmnage, peLsonal

injury, or loss of life. Refer to the User's Information

Manual provided with this unit for more details.

2. Do not store or use gasoline or other flmnmable

vapors and liquids in the vicinity of this or any other

appliance.

What to do if you smell gas:

1. DO NOT try to light any appliance.

2. DO NOT touch any electrical switch, or use any

phone in your building.

3. IMMEDIATELY call your gas supplier from a neigh-

bor's phone. Follow the gas supplier's instructions.

4. If you cannot reach your gas supplier, call the fire

department.

This will make cleaning efforts morn difficult. Surface loaded

fibeL's must be completely removed prior to using low velocity

clean water rinse.

Periodic Clean W_ter Rinse --A periodic clean water rinse is

very beneficial for coils that are applied in coastal or industri_fl

environments. However. it is very important that the water

rinse is made with very low velocity water stream to avoid

damaging the fin edges. Monthly cleaning as described below

is recommended.

Routine Cleaning of Coil Surfaces -- Monthly cleaning with

Totaline® environmentally sound coil cleaner is essential to

extend the life of coils. This cleaner is available from Cmrier

Replacement parts division as p_ut number P902-0301 for a

one gallon conttfinel: and p_ut number P902-0305 for a 5 g_fllon

containel: It is recommended that all coils, including standmd

aluminum, pre-coated, copper/copper or E-coated coils be

cleaned with the Totaline environmentally sound coil cleaner

as described below. Coil cleaning should be part of the unit's

regularly scheduled mtfintenance procedures to ensure long life

of the coil. Failure to clean the coils may result in reduced du-

rability in the environment.

Avoid the use of:

• coil brighteners

• acid cleaning prior to painting

• high pressure washers

• poor quality water for cleaning

Tot_fline environmentally sound coil cleaner is non-flmnma-

ble, hypoallergenic, nonbacteri_fl, and a USDA accepted biode-

gra&tble agent that will not harm the coil or surrounding com-

ponents such as electric_fl wiring, painted met_fl surfaces, or in-

sulation. Use of non-recommended coil cleaneLs is strongly

discouraged since coil and unit durability could be affected.

Totaline Environmentally Sound Coil (;leaner Application

Equipment

• 21/2 gallon garden sprayer

• water rinse with low velocity spray nozzle

Disconnect gas piping from unit when pressure testing at

pressure greater than 0.5 psig. Pressures greater than

0.5 psig will cause gas valve dmnage resulting in hazardous

condition. If gas valve is subjected to pressure greater than

0.5 psig, it must be replaced before use. When pressure

testing field-supplied gas piping at pressures of 0.5 psig or

less, a unit connected to such piping must be isokited by

closing the manual gas valve(s).

Cleaning -- Inspect unit interior at beginning of each heat-

ing and cooling season and as operating conditions require. Re-

move unit top panel and/or side panels for access to unit interiol:

COIL MAINTENANCE AND CLEANING RECOMMEN-

DATION -- Routine cleaning of coil surfaces is essential to

maint_fin proper operation of the unit. Elimination of contami-

nation and removal of harmful residues will greatly increase

the life of the coil and extend the life of the unit. The following

maintenance and cleaning procedures are recommended as

p_ut of the routine maintenance activities to extend the life of

the coil.

Remove Surface Loaded Fibers -- Surface loaded fibers or

dirt should be removed with a vacuum cleaner. If a vacuum

cleaner is not available, a soft non-met_fllic bristle brush may

be used. In either case, the tool should be applied in the direc-

tion of the Sins. Coil surfaces c_m be easily damaged (fin edges

can be easily bent over and damage to the coating of a protect-

ed coil) if the tool is applied across the fins.

NOTE: Use of a water stream, such as a garden hose, against a

surface loaded coil will drive the fibers and dirt into the coil.

Harsh chemicals, household bleach or acid or basic clean-

eLs should not be used to clean outdoor or indoor coils of

any kind. These cleaners can be very difficult to rinse out

of the coil _md can accelerate corrosion at the fin/tube inter-

face where dissimilar materi_fls are in contact. If there is

dirt below the surface of the coil, use the Totaline environ-

mentally sound coil cleaner as described above.

High velocity water fi_)m a pressure washel: gmden hose,

or compressed air should never be used to clean a coil. The

rome of the water or air jet will bend the fin edges and

increase airside pressure chop. Reduced unit performance

or nuisance unit shutdown may occm:

Totaline Environmentally Sound Coil Cleaner Application

Instructions

1. Proper eye protection such as safety glasses is recom-

mended during mixing and application.

2. Remove all surface loaded fibers and dirt with a vacuum

cleaner as described above.

3. Thoroughly wet finned surfaces with clean water and a

low velocity garden hose, being caleful not to bend fins.

4. Mix Totaline environmentally sound coil cleaner in a

2q2 gallon garden sprayer according to the instructions

included with the cleaner. The optimum solution temper-

ature is 100 E

NOTE: Do NOT USE water in excess of 130 IF.as the enzy-

matic activity will be destroyed.

5. ThoroughlyapplyTot_dine®environmentallysoundcoil

cleanersolutiontoallcoilsurfacesincludingfinnedtuea,

tubesheetsandcoilheaders.

6. Holdgmdensprayernozzleclosetofinnedareasandap-

plycleanerwithavertical,up-and-downmotion.Avoid

sprayingin horizontalpatterntominimizepotenti_dfor

findamage.

7. Ensurecleanerthoroughlypenetratesdeepintofinned

areas.

8. Interiorandexteriorfinnedareasmustbethoroughly

cleaned.

9. Finnedsurfacesshouldremainwetwithcleaningsolution

for10minutes.

10.Ensuresurfacesarenotallowedtodinbeforerinsing.Re-

applyingcleanerasneededto ensure10-minutesatura-

tionisachieved.

11.Thoroughlyrinseallsurfaceswithlowvelocitycleanwa-

terusingdownwardrinsingmotionofwaterspraynozzle.

Protectfinsfl'om&imagefromthespraynozzle.

CONDENSATEDRAIN-- Checkandcleaneachyearatthe

startofthecoolingseason.Inwintel;keepdiainsandtrapsdiN.

Anaccesspanelislocatedabovethecondensateconnectionto

alloweasycleanoutofthecondensatepan.Thefirsttimethe

panelisremoved,theinsulationbehindtheaccesspanelwill

needtobecutaway.Carefullycuttheinsulationwithaknifeor

bladeonthreesidessotheinsulationcanbefoldedoutofthe

wayduringcleaning.Becarefulnotto &image components be-

hind the insulation while cutting. Once cleaning is completed,

fold the insulation back into place and secure the access panel

in the original position.

FILTERS -- Clean or replace at start of each heating and cool-

ing season, or more often if operating conditions require. Refer

to Table 1 for type and size.

OUTDOOR-AIR INLET SCREENS -- Clean screens with

steam or hot water and a mild detergent. Do not use throwaway

filters in place of screens. See Table 2 for quantity and size.

MAIN BURNER -- At the beginning of each heating season,

inspect for deterioration or blockage due to conosion or other

causes. Observe the main burner flmnes. Refer to Main Burn-

ers section on page 51.

FLUE GAS PASSAGEWAYS -- The flue collector box and

heat exchanger cells may be inspected by removing heat

section access panel (Fig. 4), flue box cover, and main burner

assembly (Fig. 31). Refer to Main Burners section on page 51

for burner removed sequence. If cleaning is required, clean

tubes with a wire brush.

HEAT

EXCHANGER -

SECTION

IGC BOARD /

(HIDDEN)

COMBUSTION

FAN HOUSING

INDUCED

DRAFT

MOTOR

MAIN BURNER IGC -- Integrated Gas

SECTION Controller

MAIN GAS

VALVE

Fig. 31 -- Typical Gas Heating Section

Use c_mtion with ceramic heat exchanger baffles. When in-

stalling retaining clip, be sure the center leg of the clip extends

inw_ud toward baffle. See Fig. 32.

COMBUSTION-AIR BLOWER -- Clean periodically to as-

sure proper aidlow and heating efficiency. Inspect blower

wheel every fall and periodic_dly during heating season. For the

first heating season, inspect blower wheel bi-monthly to deter-

mine proper cleaning frequency.

To inspect blower wheel, remove heat section panel. Using

tm inspection minor and flashlight, look into the flue exhaust

duct to inspect the wheel. If cleaning is required, remove motor

and wheel assembly by removing the screws holding the flue

box cover to the flue box. See Fig. 31. Remove the screws hold-

ing the inducer housing to the inlet plate. The wheel can then be

removed from the motor shall and cleaned with a detergent or

solvent. Replace the wheel onto the motor shall in the con'ect

position and reassemble the flue cover onto the flue box.

Lubrication

COMPRESSORS iEach compressor is charged with the

correct amount of oil at the factory.

The compressor is in a Puron® re ftigerant system and uses

a polyolester (POE) oil. This oil is extremely hygroscopic,

meaning it absorbs water readily. POE oils can absorb

15 times as much water as other oils designed for HCFC

and CFC refrigerants. Avoid exposure of the oil to the

atmosphere. Damage to components could result.

Polyolester (POE) compressor lubricants are known to

cause long term dmnage to some synthetic roofing materials.

Exposure, even if immediately cleaned up, may cause roofing

materials to become brittle (leading to cracking) within a

yeac When performing any service which may risk exposure of

compressor oil to the roof. take appropriate precautions to

protect roofing. Procedures which risk oil leakage include com-

pressor replacement, repairing refrigerant leaks, and replacing

refrigerant components. To prepare rooftop:

1. Cover extended roof work area with an impermeable

plastic dropcloth or ttup. Make sure a 10 x 10 tuea around

the work area is covered.

2. Cover area in front of the unit service panel with a terry

cloth shop towel to absorb lubricant spills and prevent

mn-of£s. Towel will also protect diopcloth flom te;us

caused by tools or components.

3. Place terrycloth shop towel inside the unit directly under

components to be serviced to prevent spills through the

bottom of the unit.

4. Perform the lequired service.

5. Remove and dispose of tiny oil contaminated material per

local codes.

CERAMIC

BAFFLE

CLIP __

NOTE: One baffle and clip will be in each upper tube of the heat

exchanger.

Fig. 32 1Removing Heat Exchanger Ceramic

Baffles and Clips

FAN SHAFT BEARINGS -- Lubricate beatings at least ev-

ely 6 months with suitable betuing grease. Typical lubricants

ale given below:

MANUFACTURER I

Texaco

Mobil

Surloco

Texaco

*Preferred lubricant because it contains rust and oxidation inhibitors.

LUBRICANT

Regal AFB-2*

Mobilplex EP No, 1

Prestige 42

Multifak 2

FAN MOTOR BEARINGS -- Fan motor bearings me of the

permanently lubricated type. No field lubrication is required.

No lubrication of the condenser or evaporator motors me

required.

Manual Outdoor Air Damper-- If manual outdoor

air &unper blade adjustment is required, refer to Step 10 -- In-

st;dl Outdoor Air Hood section on page 12.

Economizer Adjustment -- If economizer adjustment

is requiled, refer to Optional EconoMiSer IV section on

page 39.

Evaporator Fan Service and Replacement -- The

48PG units feature a slide-out fan deck for easy servicing of the

indoor-fan motol: pulleys, belt, and bearings. To service com-

ponents in fltis section, perform the following procedure:

1. Turn off unit powel:

2. Open the fan section access panel.

3. Remove three no. 10 screws at front of slide-out fan deck.

Save screws. See Fig. 33.

4. Disconnect the limit switch wires located on the right

side of the fan deck. Other wires do not need to be

disconnected.

5. Fan deck can now be slid out to access serviceable

components.

DO NOT SLIDE FAN DECK OUT PAST THE STOP

BRACKET. If further access is required, the fan deck must

be supported. Make sure plugs and wiring are not pinched

between fan housing and unit center post. Dmnage to unit

may result.

To align fan and motor pulleys:

1. Loosen fan pulley setscrews.

2. Slide fan pulley ;dong fan shaft.

3. Make angular alignment by loosening motor fiom

mounting plate.

Evaporator Fan Belt Tension Adjustment -- To

adjust belt tension:

1. Turn offunit powel:

2. Slide out fan deck to service position as shown in Evapo-

rator Fan Service and Replacement section above.

3. Loosen fan motor bolts.

4. Move motor mounting plate to adjust to proper belt ten-

sion. See Table 30. Motor adjuster bolts may be used to

tighten belts. See Fig. 33.

5. Check for proper belt _flignment.Adjust if necess_uy.

6. Tighten motor mounting plate bolts to lock motor in

proper position.

7. Return fan deck back into operating position.

8. Restore power to unit.

MOTOR

FAN _ PULLEY

PULLEY (HIDDEN)

MOTOR

MOUNTING

LIMIT ÷ BASE

SWITCH

CONNECT SLIDE-OUT

FAN DECK

Fig. 33 -- Evaporator-Fan Motor Adjustment

6. To replace fan deck to operating position, slide fan deck

back into the unit. Secure with the three no. 10 screws

removed in Step 3.

7. Re-attach electrical plugs and wires.

8. Close fan section access door.

9. Restore power to unit.

Evaporator Fan Performance Adjustment

(Fig. 33 and 34) -- Fan motor pulleys are factory set

for speed shown in Table 27.

To change fan speeds:

1. Shut off unit power supply.

2. Ix_osen nuts on the 4 carriage bolts in the mounting base.

Using adjusting bolts and plate, slide motor and remove

belt.

3. Ix_osen movable-pulley flange setscrew (see Fig. 34).

4. Screw movable flange toward fixed flange to increase

speed and away from fixed flange to decrease speed.

Increasing fan speed increases load on motol: Do not

exceed maximum speed specified in Table 27.

See Table 24 for air quantity limits.

5. Set movable flange at nearest keyway of pulley hub and

tighten setscrew. (See Table 27 for speed change for each

full turn of pulley flange.)

6. Replace and tighten belts (see Evaporator Fan Belt Ten-

sion Adjustment section below).

7. Restore power to unit.

PULLEY

STRAIGHTEDGE MUST

WITH BELT

MOTOR AND FAN

SHAFTS MUST BE

PARALLEL

MOVABLE

FLANGES

SETSCREWS

FIXED FLANGES

SINGLE-GROOVE

Fig. 34-- Evaporator-Fan Alignment

and Adjustment

Table 30 -- Belt Tension Adjustment

BELT TENSION (Ib)

48PG VOLTAGE Unit Model Number Position 10

A,J B,K C,L D,M E,N F,P G,Q H,R

230 4.8 5.1 5.6 4.5 NA 4.7 5.0 5.5

20 460 4.8 5.1 5.6 4.5 NA 4.7 5.0 5.5

575 5.3 5.1 5.6 4.5 NA 5.2 5.0 5.5

230 4.8 5.1 5.6 4.5 NA 4.7 5.0 5.5

24 460 4.8 5.1 5.6 4.5 NA 4.7 5.0 5.5

575 5.3 5.1 5.6 4.5 NA 5.2 5.0 5.5

230 4.5 5.4 5.9 4.5 4.5 5.4 5.9 4.5

28 460 4.5 5.4 5.9 4.5 4.5 5.4 5.9 4.5

575 4.5 5.4 5.9 4.5 4.5 5.4 5.9 4.5

Condenser-Fan Adjustment (Fig. 35)

I. Shut off unit power supply.

2. Remove condenser-fan assembly (grille, motol: motor

covek and fan) and loosen fan hub setscrews.

3. Adjust fan height as shown in Fig. 35.

4. Tighten setscrews and replace condenser-fan assembly.

5. Turn on power to unit.

Fig. 35 -- Condenser-Fan Adjustment

Verify Sensor Performance -- Using an ohmmeter

and a thermometer, compme measured temperature to the

resistance shown in Table 31.

Table 31 -- Sensor Temperature/Resistance Values

TEMPERATURE (F) RESISTANCE (ohms)

-58 200,250

-40 100,680

-22 53,010

-4 29,091

14 16,590

32 9,795

50 5,970

68 3,747

77 3,000

86 2,416

104 1,597

122 1,080

140 746

158 525

176 376

185 321

194 274

212 203

230 153

248 116

257 102

266 89

284 70

302 55

Economizer Operation During Power Fail-

ure -- Dampers have a spring return. In event of power fail-

ure, dampers will return to fully closed position until power is

restored. Do not manually ol)emte damper motol:

Evacuation -- Proper evacuation of the system will re-

move noncondensables and ensure a tight, dry system before

charging. Evacuate from both high and low side ports. Never

use the system compressor as a vacuum pump. Refrigerant

tubes and indoor coil should be evacuated to 500 microns.

Always break a vacuum with @ nitrogen. The two possible

methods are the deep vacuum method and the triple evacuation

method

DEEP VACUUM METHOD-- The deep vacuum method

requires a vacuum pump capable of pulling a minimum vacu-

um of 500 microns and a vacuum gage capable of accurately

measuring this vacuum depth. The deep vacuum method is the

most positive way of assuring a system is free of air and liquid

watel: (See Fig. 36.)

TRIPLE EVACUATION METHOD -- The triple evacuation

method should only be used when vacuum pump is capable of

pumping down to 28 in. of mercu Uand system does not con-

tain any liquid watel: Proceed as follows:

1. Pump system down to 28 in. of mercury and allow pump

to continue operating for an additional 15 minutes.

2. Close service valves and shut off vacuum pump.

3. Connect a nitrogen cylinder and regulator to system and

open until system pressure is 2 psig.

4. Close service valve and allow system to stand for 1 hi:

During this time, dqnitrogen will be able to diffuse

throughout the system, absorbing moisture.

5. Repeat this procedure. System will then contain minimal

mnounts of contmninants and water vapol:

LEAK IN

VACUUM TIGHT

TOO WET

TIGHT

DRY SYSTEM

O 1 2 3 4 5 6 7

MINUTES

Fig. 36 -- Deep Vacuum Graph

Refrigerant Charge -- Amount of refrigerant chmge is

listed on unit nameplate. Refer to Carrier GTAC II; Module 5;

Charging, Recovery. Recycling, and Reclamation section for

charging methods and procedures. Unit panels must be in place

when unit is operating during chm'ging procedme.

Puron® (R-410A) refrigerant cylinders contain a dip tube

which allows liquid refrigerant to flow from the cylinder in an

upright position. Charge units with cylinder in the upright

position and a commercial type metering device in the mani-

fold hose.

This system uses Puron refrigerant which has higher

pressmes than R-22 and other refrigerants. No other refrig-

erant may be used in this system. Gage set, hoses, and

recovery system must be designed to handle Puron refrig-

erant. If unsure about equipment, consult the equipment

manu facture_:

NOTE: Do not use recycled refrigerant as it may contain

contaminants.

NO CHARGE -- Use stan&trd evacuating techniques. After

evacuating system, weigh in the specified amount of refriger-

ant (refer to unit nameplate).

LOW CHARGE COOLING -- Using cooling charging chm-t

(see Fig. 37-39), add or remove refrigerant until conditions of

the chart me met. An accurate pressure gage and temperature-

sensing device are required. Charging is accomplished by

ensuring the proper amount of liquid subcooling. Measure

liquid line plessure at the liquid line service valve using pressure

gage. Connect temperature sensing device to the liquid line near

the liquid line service valve and insulate it so that outdoor mnbi-

ent temperatme does not affect leading.

TO USE THE COOLING CHARGING CHART -- Use the

above temperature and pressure readings, and find the intersec-

tion point on the cooling charging chart. If inteLsection point on

chart is above line, add refrigerant. If intersection point on

chart is below line, cmefully recover some of the charge. Re-

check suction pressure as chmge is adjusted.

NOTE: Indoor-air cfin must be within normal operating range

of unit. All outdoor fans must be operating.

The TXV (thermostatic expansion v_flve) is set to maintain

between 10 and 15 degrees of superheat at the compressors.

The v_dves are factory set and cannot be adjusted. Do not use a

TXV designed for use with R-22 refrigerant.

PURON REFRIGERANT -- Puron refrigerant operates at 50

to 70 percent higher pressmes than R-22. Be sure that servicing

CHARGING CHART (ALL CIRCUITS)

ALL OUTDOOR FANS MUST BE OPERATING

Liquid Pressure a_ Liquid Valve, [p_igl

Fig. 37 -- Charging Chart -- 48PG20

Fig. 39 -- Charging Chart -- 48PG28

equipment and replacement components am designed to oper-

ate with Puron refrigerant. Do not mix with components that

have been used with other refrigerants. Puron refrigerant, as

with other HFCs, is only compatible with POE oils.

Recove Ucylinder service pressure rating must be 400 psig.

Puron systems should be charged with liquid refrigerant. Use a

commercial-type metering device in the manifold hose. Mani-

fold sets should be 750 psig high-side and 200 psig low-side

with 520 psig low-side mtmd. Use hoses with 750 psig service

pressure rating. Leak detectors should be designed to detect

HFC refrigerant.

Gas Valve Adjustment

NATURAL GAS- The gas valve ()pens and closes in re-

sponse to the thermostat or limit control.

When power is supplied to valve terminals W2 (High Fire)

and C l, the main valve opens to its preset position.

The regular factory setting is stmnped on the valve body.

The setting is 3.00 in. wg for vertical supply/discharge units.

The setting is 2.95 in. wg for horizont_d supply/discharge units.

To adjust regulator:

1. Set unit at setting for no call for heat.

2. Turn main gas valve to OFF position.

3. Remove l/s-in, pipe plug from manifold or gas valve

pressure tap connection. Install a suitable p_essure-

measuring device.

4. SetmaingasvalvetoONposition.

5. Setthennostatatsettingtocallforheat.

6. Removescrewcapcoveringregulatoradjustmentsclew

(seeFig.40).

7. Turnadjustmentscrewclockwisetoincreasepressureor

counterclockwisetodecreasepressure.

8. Oncedesiredpressureisestablished,setunitsetting

fornocallforheat,turnoffmaingasvalve,remove

pressure-measuringdevice,andreplaceI/s-in.pipe

plugandscrewcap.

High Altitude--For high altitude applications greater

than 2000 ft the heat input rate should be reduced. The higher

the altitude is above sea level, the less oxygen is in the all: See

Table 32 for orifice sizing. A high ;fltitude kit is available to

convert unit for altitudes up to 7,000 ft.

Main Burners -- For all applications, main burners are

factory set and should require no adjustment.

MAIN BURNER REMOVAL

1. Shut off (field-supplied) manual main gas valve.

2. Shut off power to unit.

3. Remove gas section access panel.

4. Disconnect gas piping from gas valve inlet.

5. Remove wires from gas valve.

6. Remove wires from rollout switch.

7. Remove sensor wire and ignitor cable from [GC board.

8. Remove 2 screws securing manifold bracket to basepan.

9. Remove 2 screws that hold the burner assembly to vesti-

bule plate.

10. Lift burner/manifold assembly out of unit.

2 LEADS, #18 WIRE 1/32 INSULATION,

600V. MAX.,

(PLUGGED) /

1/8 - 27 N.P.q_ THDS.

REGULATOR

ADJUSTMENT SCREW

REMOVE COVER)

OUTLET PRESSURE

/'TAP (PLUGGED)

i jl/8-27 N.P.]_ THDS.

RECEPTACLE AND

J TAB COMBINATION

TERMINAL

_", PI LOT CONNECTION

FOR 1/4" O.D. TUBING

(PLUGGED)

RECEPTACLE TERMINAL

Fig. 40 -- Gas Valve

CLEANING AND ADJUSTMENT

1. Remove burner rack from unit as described in Main

Burner Removal section above.

2. Inspect burners, and if dirty, remove burners from rack.

3. Using a soft brash, clean burnel_ and crossover port as

required.

4. Adjust spark gap. See Fig. 41.

5. Reinstall burners on rack.

6. Reinstall burner rack as described above.

I _ SEE DETAIL "C"

I I [............................

I I ,I I <-_

,_ _ _ ...... i x _'_

°"1 .....................,[ ,, ...............i, .............i .... I l

I I

, ,

SPARK GAP.12ff'TO.140"

_._RK GAP .181"

I1 ,_2 -

DETAIL "C"

Fig. 41 -- Spark Gap Adjustment

Table 32 -- Altitude Compensation*

NATURALGAS

ELEVATION

(ft)

0-1,999

2,000

3,000

4,000

5,000

6,000

7,000

8,000

9,000

10,000

Low Heat

NATURAL GAS ORIFICE SIZEt

Medium Heat High Heat (6 Cell)

High Heat (8 Cell)

*As the height above sea level increases, there is less oxygen per cubic foot of air. Therefore, heat input

rate should be reduced at higher altitudes. Includes a 4% input reduction per each 1000 ft.

1-Orifices available through the local Carrier dealer.

PROPANE GAS

PROPANE GAS ORIFICE SIZEt

Low Heat Medium Heat High Heat (6 Cell)

ELEVATION

(ft)

0-1,999

2,000

3,000

4,000

5,000

6,000

7,000

8,000

9,000

10,000

High Heat (8 Cell)

*As the height above sea level increases, there is less oxygen per cubic foot of air. Therefore, heat input

ate should be reduced at higher altitudes. Includes a 4% input reduction per each 1000 ft.

1-Orifices available through the local Carrier dealer.

Filter Drier -- Replace whenever refi'igerant system is ex-

posed to atmosphere. Only use factory specified liquid-line

filter driers with working pressures no less than 650 psig. Do

not install a suction-line filter drier in liquid line. A liquid-line

filter drier designed for use with Puron® refi'igerant is required

for each circuit.

Protective Devices

COMPRESSOR PROTECTION

Overcurrent -- Each compressor has internal line break motor

protection.

Overtemperature -- Each compressor has an internal protector

to protect it ag_dnst excessively high dischmge gas temperatures.

High-Pressure Switch --If the high-pressure switch opens, the

compressor will shut down trod the compressor lockout (CLO)

device will energize to block further compressor operation. The

high-pressure switch will reset automatically as the refrigerant

pressure &ops below its reset level. The CLO will lem_dn ener-

gized until manually reset or cooling demand is removed.

Low-Pressure Switch -- If the low-pressure switch opens,

the compressor will shut down and the compressor lockout

(CLO) device will energize to block further compressor opera-

tion. The low-pressure switch will reset automatically as the

refrigerant pressure rises above its reset level. The CLO will

remain energized until manually reset or cooling demand is

removed.

Freeze Protection Switch -- This switch is inst_dled on each

evaporator coil section to provide protection against continued

unit operation with a frosted evaporator surface. [f the freeze

protection switch opens, the compressor on this circuit will

shut down and the compressor lockout (CLO) device will ener-

gize to block further compressor operation. The freeze protec-

tion switch will reset as the evaporator tube temperature rises

above its reset level. The CLO will remain energized until

manually reset or cooling demand is removed.

Compressor Lockout (CLO)Device -- The CLO prevents

automatic recycling of the compressor as safety controls leset.

If the high-pressme switch, low-pressure switch or freeze pro-

tection switch opens, the CLO device will energize to block

further compressor operation. To reset the CLO (after all safety

switches have reset), either open the thermostat to remove the

cooling demand signal (and then re-close) or cycle the control

power in the unit.

EVAPORATOR FAN MOTOR PROTECTION -- A manu-

al reset, calibrated trip, magnetic circuit breaker protects

against overcurrent. Do not bypass connections or increase the

size of the breaker to correct trouble. Determine the cause and

correct it befole resetting the breakel:

CONDENSER-FAN MOTOR PROTECTION -- Each

condenser-fan motor is internally protected against

overtemperatme.

Fuses me also located in the control box and feed power to

the condenser fan motors. Always replace blown fuses with the

conect size fuse as indicated on the unit fuse label.

Relief Devices -- All units have relief devices to protect

against &image from excessive pressures (i.e., fire). These

devices protect the high and low side and are located at the suc-

tion line sel-vice port. Protect joint during brazing operations

ne_u joint.

Control Circuit, 24-V- Each control circuit is pro-

tected against overcurrent by a 3.2 amp circuit breakel:

Breaker can be reset. [f it trips, determine cause of trouble

before resetting. See Fig. 42-45 for schematics.

Replacement Parts -- A complete list of replacement

parts may be obtained from any Career distributor upon

request.

Diagnostic LEDs -- The [GC control board has a LED

for diagnostic purposes. See Unit Troubleshooting section on

page 57 for mole information.

:®

IGC

[

EQUIP GND

208/Z30V

CORNECT WIRE TO F_]YEL

APPROPRIATE UNIT VOLTAGE

RLK

--RL_ TRAN1

_RER_BR_TO CRI TO _4V

IR_R AMPR/ _ CHEHATIE

CONNECT FIRE TO

APPROPRIATE URIT VOLTAGE

OFCR

ROP (X_ Ot_ IISV

RID 4SOY I

GRA

SECONDARY

: 120v

COMP A1

ORMI

OFM3

Fig. 43 -- Typical Power Schematic

OB TD()OR TEMPERATURE

AND AL

su_

COOLER

I................J.,

CONI'ROL BOX

CONPRESSOR CONTACTORG

COMPONENT ARRANGEMENT

C_PRESSO_

CONDB_SB_ COIL

PLUG LOCATION RZFERERCZ

CONTROL BOX

RREEB£STAT LO(_A'nONS (CONTROL BOARD}

EVaPOratOR_E_R_ B_E_ iRE 3HEAT SZGT]O_ PARTITIOR

zo_z_ (HEAT CONTROLS}

FAN SECTION

(IND(_)R FAN MOTOR)

_ONDE_SER SECTION

(OFMI. 2, 3]

_ONDE_SER SECTION

(OFM4, 5, 6)

PL_ ECONOMIZER D_CTION

(ECOffOMIEER MOTOR)

ipL R POWER EXHAUST GECTIOR

IPOW_R EXHAUST _OTORS}

CONDERS£R SECTION

(OFMI)

_ONDENSER SECTION

(OFMB)

CONDENSER SECTION

(OF_3)

_ONDE_SER SECTION

(OFM4}

_LI4 _ONDE_SER SECTION

(OFMS}

CONDenSER SECTION

(OFM6)

FAN SECTION

(FAN STATUS ACCESSORY)

ECONOMIZER SECTION

(2-POSITION DAMPER)

EO_PRESDOR SECTION

(CO_ SENSOR)

iPL19:_PeESSOeSECT_O_

CIRCUIT

•SMO_E DETECTOR

SMO_E CORTROL:

CCHDI

CCHAI

LPSA

PLUG LOCATION REFERENCE

PLI CONTROL _OX

(CONTROL 80ADD}

HEAT SECTIO_ PARTITIO_

PL3 (HEAT CONTROLS}

RAN SECTION

PL4 (INDOOR FAN MOTOR}

CONDENSER SECTIO_

PLR (OE_1, 2, 31

PL6 CONDENSER SECTIO_

(OF_4, 5, 6)

ECONOMIZER SECTIO_

PLT (ECONOMIZER MOTOR)

POWER EXHAUST SECTIO_

PL9 (PO_ER EXHAUST MOTORS}

PLIU CONDENSER SECTIOR

(OF_1)

PL11 CONDENSER SECTIO_

(OF_2)

CONDENSER SECTIOR

PL12 IOE_3)

PL13 CONDENSER SECTIO_

(OF_4)

CONDENSER SECTION

PL14 IOF_5)

PLIE CONDENSER SECTIO_

(OF_R)

RAN SECTIO_

PlIR (FAN STATUS ACCESSORY)

ECONOMIZER UECT_O_

PL17 (R-POSITIO_ DAMPED1

PlIR COMPRESSOR SECTIO_

(COD SENSOR1

COmpReSSORSECTIO_

PL19 _S_OK_DET£CTORCONTROL_O_ULE

CIRCUIT

FI_,R'S_ATU'_ OUTLET TRA_SFO_CCHAR CCHA] ' '

HPSD GASHEAT ONLY ZVAP CIRCUIT CONFIGURATIOR

THERMOSTAT/IGC MARKINGS

BM -- BIowerMotor

C-- Common

CM -- Inducer Motor

CS -- Centrifugal Switch

G-- Fan

IFO -- Indoor Fan On

L1 -- Line 1

R-- Thermostat Power

RT -- Power Supply

SS -- Speed Sensor

W -- Thermostat Heat

W1 -- 1st Stage of Heating

W2 -- 2nd Stage of Heating

X-- Alarm Output

Y1 -- tst Stage of Cooling

Y2 -- 2rid Stage of Cooling

NOTES:

1. Factory wiring is in accordance with the National Electrical Codes. Any

field modifications or additions must be in compliance with all applicable

codes.

2. Use 75° C min wire for field power supply. Use copper wires for all units.

3. All circuit breakers "Must Trip Amps" are equal to or less than 156% RLA.

4. Compressor and fan motors are thermally protected. Three=phase motors

protected against primary single-phase conditions.

5. The CLO locks out the compressor to prevent short cycling on compressor

overload and safety devices. Before replacing CLO, check these devices.

---A --

AUX --

---B --

CAP --

CCH --

OLD --

COMP --

CT BRK-

ECB --

FCS --

FlOP --

FPT --

GND --

HACR --

HERM --

HPS --

IAQ --

IDM --

IDR --

IFC --

IFCB --

IFM --

IGC --

LOR --

LEGEND FOR FIG. 42-45

Circuit A

Auxiliary Contact

Ambient Limit

Circuit B

Compressor Contactor

Capacitor

Compressor Circuit Breaker

Crankcase Heater

Compressor Lockout

Compressor

Circuit Breaker

Control Relay

Dummy Terminal

Economizer Control Board

Fan Cycling Switch

Factory-Installed Option

Freeze Protection Thermostat

Flame Sensor

Fuse

Ground

Gas Valve

Heating, Air Conditioning,

and Refrigeration

Hermetic

High-Pressure Switch

Ignitor

Indoor Air Quality

Induced=Draft Motor

Induced Draft Relay

Indoor=Fan Confacfor

Indoor Fan Circuit Breaker

Indoor=Fan Motor

Integrated Gas Controller

Lockout Relay

LPS -- Low-Pressure Switch

LS -- Limit Switch

OAS -- Outdoor-Air Sensor

OFC -- Outdoor-Fan Contactor

OFM -- Outdoor=Fan Motor

PEC -- Power Exhaust Contactor

PEM -- Power Exhaust Motor

PL -- Plug

PLP -- Phase Loss Protection

QC -- Quick Connect

QT -- Quadruple Terminal

RAS -- Return Air Sensor

RS -- Rollout Switch

SAT -- Supply-Air Temperature

TB -- Terminal Block

TRAN -- Transformer

TXV -- Thermostatic Expansion Valve

W/AT -- With Auxiliary Trip

Terminal Block

O Terminal (Unmarked)

@ Terminal (Marked)

-- Factory Wiring

.... Field Wiring

To Indicate Common Potential

m OnlF Notto Represent Widng.

.... To Indicate FlOP or Accessory

Fig. 45 -- Typical Component Arrangement -- 48PG28

TROUBLESHOOTING

Unit Troubleshooting- Refer to Tables 33-35 and

Fig. 46.

Table 33 -- Cooling Service Analysis

PROBLEM CAUSE REMEDY

Compressor and Condenser Power failure. Gall power company.

Fan Will Not Start, Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker.

Defective thermostat, contactor, transformer, or control Replace component.

relay.

Insufficient line voltage. Determine cause and correct.

Incorrect or faulty wiring. Check wiring diagram and rewire correctly.

Thermostat setting too high. Lower thermostat setting below room temperature.

Compressor Will Not Start Faulty wiring or loose connections in compressor Check wiring and repair or replace.

but Condenser Fan Runs. circuit.

Compressor motor burned out, seized, or internal Determine cause. Replace compressor.

overload open.

Defective overload. Determine cause and replace.

Compressor locked out Determine cause for safety trip and reset lockout.

One leg of 3-phase power dead. Replace fuse or reset circuit breaker.

Determine cause.

Compressor Cycles Refrigerant overcharge or undercharge. Recover refrigerant, evacuate system, and recharge to

(other than normally nameplate.

satisfying thermostat), Defective compressor. Replace and determine cause.

Insufficient line voltage. Determine cause and correct.

Blocked condenser. Determine cause and correct.

Defective overload. Determine cause and replace.

Defective thermostat. Replace thermostat.

Faulty condenser-fan motor. Replace.

Restriction in refrigerant system. Locate restriction and remove.

Compressor Operates Dirty air filter. Replace filter.

continuously. Unit undersized for load. Decrease load or increase unit size.

Thermostat set too low. Reset thermostat.

Low refrigerant charge. Locate leak, repair, and recharge.

Air in system. Recover refrigerant, evacuate system, and recharge.

Condenser coil dirty or restricted. Clean coil or remove restriction.

Excessive Head Pressure. Dirty air filter. Replace filter.

Dirty condenser coil. Clean coil.

Refrigerant overcharged. Recover excess refrigerant.

Faulty TXV. 1. Check TXV bulb mounting and secure tightly to suction line.

2. Replace TXV if stuck open or closed.

Air in system. Recover refrigerant, evacuate system, and recharge.

Condenser air restricted or air short-cycling. Determine cause and correct.

Head Pressure Too Low, Low refrigerant charge. Check for leaks, repair, and recharge.

Restriction in liquid tube. Remove restriction.

Excessive Suction Pressure. High heat load. Check for source and eliminate.

Faulty TXV. 1. Check TXV bulb mounting and secure tightly to suction line.

2. Replace TXV if stuck open or closed.

Refrigerant overcharged. Recover excess refrigerant.

Suction Pressure Too Low. Dirty air filter. Replace filter.

Low refrigerant charge. Check for leaks, repair, and recharge.

Metering device or low side restricted. Remove source of restriction.

Faulty TXV. 1. Check TXV bulb mounting and secure tightly to suction line.

2. Replace TXV if stuck open or closed.

Insufficient evaporator airflow. Increase air quantity. Check filter and replace if necessary.

Temperature too low in conditioned area. Reset thermostat.

Field-installed filter drier restricted. Replace.

LEGEND

TXV -- Thermostatic Expansion Valve

Table 34 -- Gas Heating Service Analysis

PROBLEM

Burners Will Not Ignite.

Inadequate Heating,

Poor Flame Characteristics.

Burners Will Not Turn Off.

CAUSE

Misaligned spark electrodes.

No gas at main burners.

Water in gas line.

No power to furnace.

No 24 v power supply to control circuit.

Miswired or loose connections.

Burned-out heat anticipator inthermostat.

Broken thermostat wires.

Dirty air filter.

Gas input to unit too low.

Unit undersized for application.

Restricted airflow.

Blower speed too low.

Limit switch cycles main burners.

Too much outdoor air.

Incomplete combustion (lack of combustion air)

results in:

Aldehyde odors, CO, sooting flame, or floating

flame.

Unit is locked into Heating mode for a one minute

minimum.

REMEDY

Check flame ignition and sensor electrode positioning.

Adjust as needed.

Check gas line for air; purge as necessary. After purging gas

line of air, allow gas to dissipate for at least 5 minutes before

attempting to relight unit.

Check gas valve.

Drain water and install drip leg to trap water.

Check power supply, fuses, wiring, and circuit breaker.

Check transformer. Transformers with internal overcurrent pro-

tection require a cool-down period before resetting. Check 24-v

circuit breaker; reset if necessary.

Check all wiring and wire nut connections.

Replace thermostat.

Run continuity check. Replace wires if necessary.

Clean or replace filter as necessary.

Check gas pressure at manifold. Clock gas meter for input.

If too low, increase manifold pressure or replace with correct

orifices.

Replace with proper unit or add additional unit.

Clean filter, replace filter, or remove any restrictions.

Install alternate motor, if applicable, or adjust pulley to increase

fan speed.

Check rotation of blower, thermostat heat anticipator settings,

and temperature rise of unit. Adjust as needed.

Adjust minimum position.

Check economizer operation.

Check all screws around flue outlets and burner compartment.

Tighten as necessary.

Cracked heat exchanger. Replace heat exchanger.

Overtired unit -- reduce input, change orifices, or adjust gas

line or manifold pressure.

Check vent for restriction. Clean as necessary.

Check orifice to burner alignment.

Wait until mandatory one minute time period has elapsed or

power to unit.

I 1 FLASH - _ FNq DELAY L=MO[Y_=IED (HE&TING) p--

I 2 _S -_ OF LIMIT

9ATICH

3 FLASHES -FLAIdE SE_NS(_

INI:_ATES _ V_H

CLOSED GAS VALVE

4_-UMIT 9PATCH

CYCLED 4 TIMES ON SINGLE

CALL FOR HEAT

I5_-IG_fi]ON LOCKOUT(No _v4htn 15 minutes)

6_-INDt.W3EDDRAFT

MOT(_ FAULT

(No _gnaJ _om _'_eH=_ B'_ct

Sensor for e0 second)

t 7_-_OF

ROtU3trr _

I , I

oLr_ FAN I_

,,_

,i I SECONO ON DELAY

bSAll-_

OUIIX)OR FAN STC_

'_MEDIATELY

30 S_D_OFF BY

'_ I FOR _NOOORFAN

I 9 FLASHES -SOFTWARELOCKOUT _'-

I,BLOWN 5 AMP FUSE

2. (_=ECTNE 24V TRN_S.

3, BROKE_ V_RE

_1 4, NO POWER TO UNtT

I'Wl' FROM BASE CONTROL BOARD ENERGIZES 'W' ION IGC - I MINUTE LOCK-ON

I IF I_M IS _AT CORRE_f SPI_I) (AT LEAST 2400 RPI_, HALL I

E_'FECT S/_NSOR _'_DS _ _X:_AL TO TERMINAL *Jr' ON IGC

LOGIC V_LL INITIATE IGNITION

-I

HIGH VOLTAGE

CREATES A

10,000 "_)LT SPi_K FOR 5

8ECONOS

I _C S/_ET, fLOGIC V_LL _HUT

OFF GAS VALVE AND SPARK

EXCHANGER

Yes

(5 _ OF L_)

LEGEND

IDM -- Induced-Draft Motor

IGC -- Integrated Gas Unit Controller

NOTE: Thermostat Fan Switch in the

"AUTO" position.

I{GC S_ETY LOGIC OPENS GAS

VALVE FOR 5 5_-43OND8

Yes

IND_'_ FAN ON TIME DELAY

,i,

I _ sTc_,sA_-rYLC__ O__ V__V_ I

,I,

(DELAY EXTENDED BY 5 SECONDS FOR F-a_H UMIT SWfICH TRP -

MAXIMUM DELAY: 3 MINUTEB)

Fig. 46 -- IGC Control (Heating and Cooling)

.s9

Table 35 -- IGC Board LED Alarm Codes

LED

FLASH

CODE

Off

1 Flash

2 Flashes

3 Flashes

4 Flashes

5 Flashes

6 Flashes

7 Flashes

8 Flashes

9 Flashes

DESCRIPTION

Normal Operation

Hardware Failure

Indoor Fan On/Off Delay

Modified

Limit Switch Fault

Flame Sense Fault

Four Consecutive Limit

Switch Fault

Ignition Fault

Induced Draft Motor Fault

Rollout Switch Lockout

Internal Control Lockout

Temporary Software Lockout

ACTION TAKEN BY

CONTROL

No gas heating,

5 seconds subtracted from

On delay.

5 seconds added to Off

delay (3 min max).

Gas valve and igniter Off.

Indoor fan and inducer On.

No gas heating.

If heat off: no gas heating.

If heat on: gas valve Off and

inducer On.

Gas valve and igniter Off.

Indoor fan and inducer On.

No gas heating,

RESET METHOD

Power reset.

Limit switch closed, or

heat call (W) Off.

Flame sense normal.

Power reset for LED reset.

Heat call (W) Off.

Power reset for LED reset.

Heat call (W) Off.

Power reset for LED reset.

Inducer sense normal, or

heat call (W) Off.

Power reset.

hour auto reset, or

_owerreset.

PROBABLE CAUSE

Loss of power to the IGC. Check 5 amp fuse on IGC,

)ower to unit, 24V circuit breaker, transformer, and

wiring to the IGC.

High temperature limit switch opens during heat

exchanger warm-up period before fan-on delay

expires.

High temperature limit switch opens within

10 minutes of heat call (W) Off.

See Limit Switch Fault.

High temperature limit switch is open. Check the oper-

ation of the indoor (evaporator) fan motor. Ensure that

the supply-air temperature rise is within the range on

the unit nameplate. Check wiring and limit switch

operation.

The IGC sensed a flame when the gas valve should be

closed. Check wiring, flame sensor, and gas valve

operation.

4 consecutive limit switch faults within a single call for

heat. See Limit Switch Fault.

Unit unsuccessfully attempted ignition for 15 minutes.

Check igniter and flame sensor electrode spacing,

gaps, etc. Check flame sense and igniter wiring. Check

gas valve operation and gas supply.

Inducer sense On when heat call Off, or inducer sense

Off when heat call On. Check wiring, voltage, and

operation of IGC motor. Check speed sensor wiring to

IGC.

Rollout switch has opened. Check gas valve opera-

tion. Check induced-draft blower wheel is properly

secured to motor shaft.

IGC has sensed internal hardware or software error. If

fault is not cleared by resetting 24 v power, replace the

IGC.

Electrical interference is disrupting the IGC software.

LEGEND

IGC i Integrated Gas Unit Control

LED i Light-Emitting Diode

NOTES:

1. There is a 3-second pause between alarm code displays.

2. If more than one alarm code exists, all applicable alarm codes will be

displayed in numerical sequence.

3. Alarm codes on the IGC will be lost if power to the unit is interrupted.

EconoMi$er IV Troubleshooting

ECONOM[$ER IV PREPARATION -- This procedure is

used to prepare the EconoMiSer IV for troubleshooting. No

troubleshooting or testing is done by performing the following

procedure.

NOTE: This procedure requires a 9-v battery, 1.2 kilo-ohm

resistol, and a 5.6 kilo-ohm resistor which are not supplied

with the EconoMiSer IV.

IIMPORTANT: Be sure to record the positions of all poten - ]

tiometers before starting troubleshooting.

1. Disconnect power at TR and TRI. All LEDs should be

off. Exhaust fan contacts should be open.

2. Disconnect device at P and PI.

3. JumperPtoPl.

4. Disconnect wires at T and TI. Place 5.6 kilo-ohm resistor

across T and TI.

5. Jumper TR to 1.

6. Jumper TR to N.

7. If connected, remove sensor from terminals So and +.

Connect 1.2 kilo-ohm 4074EJM checkout resistor across

terminals So and +.

8. Put 620-ohm resistor across terminals SR and +.

9. Set minimum position, DCV set point, and exhaust

potentiometers fully CCW (counterclockwise).

10. Set DCV maximum position potentiometer fully CW

(clockwise).

11. Set enthalpy potentiometer to D.

12. Apply power (24 vac) to termimds TR and TRI.

DIFFERENTIAL ENTHALPY-- To check differential

enthalpy:

1. Make sure EconoMiSer IV prepmation procedure has

been performed.

2. Place 620-ohm resistor across So and +.

3. Place 1.2 kilo-ohm resistor across SR and +. The Free

Cool LED should be lit.

4. Remove 620-ohm resistor across So and +. The Free

Cool LED should turn off.

5. Return EconoMiSer IV settings and wiring to norm_d

after completing troubleshooting.

SINGLE ENTHALPY -- To check single enth_dpy:

1. Make sure EconoMi$er IV prepmation procedure has

been performed.

2. Set the enthalpy potentiometer to A (fully CCW). The

Free Cool LED should be lit.

3. Set the enthalpy potentiometer to O (fully CW). The Free

Cool LED should turn off.

4. Return EconoMiSer [V settings and wiring to normJ

after completing troubleshooting.

DCV (DemandControlledVentilation)AND POWER

EXHAUST-- TocheckDCVandPowerExhaust:

1. MakesumEconoMi$erIV prepguationprocedurehas

beenperformed.

2. EnsureterminalsAQandAQI areopen.TheLEDfor

bofllDCVandExhaustshouldbeoff. Theactuator

shouldbefullyclosed.

3. Connecta9-vbatteryto AQ(positivenode)andAQI

(negativenode).TheLEDforbothDCVandExhaust

shouldturnon.Theactuatorshoulddrivetobetween90

and95%open.

4. TurnfileExhaustpotentiometerCWuntiltheExhaust

LEDturnsoff.TheLEDshouldturnoff whenthe

potentiometerisapproximately90%.Theactuatorshould

remaininposition.

5. TurntheDCVsetpointpotentiometerCWuntiltheDCV

LEDturnsoff.TheDCVLEDshouldturnoffwhenthe

potentiometerisapproximately9v.Theactuatorshould

drivefullyclosed.

6. TurntheDCVandExhaustpotentiometel.sCCWuntil

theExhaustLEDturnson.Theexhaustcontactswill

close30to120secondsaftertheExhaustLEDturnson.

7. ReturnEconoMi$erIV settingsandwiringto norm_d

aftercompletingtroubleshooting.

DCVMINIMUMANDMAXIMUMPOSITION-- Tocheck

theDCVminimumandmaximumposition:

1. MakesumEconoMi$erIV prepmationprocedurehas

beenperformed.

2. Connect a 9-v battery to AQ (positive node) and AQI

(negative node). The DCV LED should turn on. The

actuator should drive to between 90 and 95% open.

3. Turn the DCV Maximum Position potentiometer to mid-

point. The actuator should &ive to between 20 and 80%

open.

4. Turn the DCV Maximum Position potentiometer to lhlly

CCW. The actuator should drive fully closed.

5. Turn the Minimum Position potentiometer to midpoint.

The actuator should drive to between 20 and 80% open.

6. Turn the Minimum Position Potentiometer lhlly CW. The

actuator should drive lhlly open.

7. Remove the jumper fi_m TR and N. The actuator should

drive fully closed.

8. Return EconoMi$er IV settings and wiring to norm_d

after completing troubleshooting.

MIXED-AIR INPUT -- To check mixed-air input:

1. Make sum EconoMi$er IV preparation procedure has

been performed.

2. Set the Enthalpy potentiometer to A. The Free Cool LED

turns on. The actuator should drive to between 20 and

80% open.

3. Remove the 5.6 kilo-ohm lesistor and jumper T to TI.

The actuator should drive lhlly open.

4. Remove the jumper across T and TI. The actuator should

drive fully closed.

5. Return EconoMi$er IV settings and wiring to normal

after completing troubleshooting.

ECONOM[$ER IV TROUBLESHOOTING COMPLE-

TION -- This procedure is used to return the EconoMiSer IV

to operation. No troubleshooting or testing is done by perform-

ing the following procedure.

1. Disconnect power at TR and TRI.

2. Set enthalpy potentiometer to previous setting.

3. Set DCV maximum position potentiometer to previous

setting.

4. Set minimum position, DCV set point, and exhaust

potentiometel.s to previous settings.

5. Remove 620-ohln resistor from terminals SR and +.

6. Remove 1.2 kilo-ohm checkout resistor from terminals

So and +. [fused, reconnect sensor from temrinals So and

7. Remove jumper from TR to N.

8. Remove jumper from TR to 1.

9. Remove 5.6 kilo-ohm resistor from T and TI. Reconnect

wires at T and TI.

10. Remove jumper from P to PI. Reconnect device at P and

PI.

11. Apply power (24 vac) to terminals TR and TRI.

Phase Loss Protection- The phase loss protection

option will monitor the throe-phase electric;d system to provide

phase reversal and phase loss protection.

PHASE REVERSAL PROTECTION -- If the control sens-

es an incorrect phase relationship, the relay (KI) will be de-

energized (opening its contact). If the phase relationship is

correct, the relay will be energized. The control has a self-

bypass function after a pre-set time. If the control detemrines

flint file three phases stay in a correct relationship for 10 con-

secutive minutes, the relay will stay energized regardless of the

phase sequence of three inputs as long as 24-vac control

voltage is applied. This self-bypass lhnction will be reset if _dl

three phases are restored in a phase loss event.

PHASE LOSS PROTECTION-- If the reverse rotation

board senses any one of the three phase inputs has no AC

voltage, file relay will be deenergized (opening its contact).

This protection is _dways active as long as 24-vac control volt-

age is applied, and is not affected by the self bypass function of

the phase sequence monitoring function. However. in the event

of phase loss, the relay will be re-energized only if all three

phases m'e restored and the three phases me in the correct

sequence.

A red LED is provided to indicate the function of the board.

See the table below.

LED STATUS FUNCTION

On Continuously Relay contact closed (normal operation).

Relay contact open (phase loss or phase

Blinking reversal has occurred) -- No power will be

supplied to the control system.

Off 24 vac control power not present (off).

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

PC 111 Catalog No. 534-80211 Printed in U.S.A. Form 48PG-10SI Pg 62 9-05 Replaces: New

UNIT START-UP CHECKLIST

MODEL NO.: SERIAL NO.:

DATE: TECHNICIAN:

PRE-START-UP:

[] VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT

[] VERIFY INSTALLATION OF OUTDOOR AIR HOOD

[] VERIFY INSTALLATION OF FLUE EXHAUST AND INLET HOOD

[] VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTRUCTIONS

[] VERIFY THAT ALL ELECTRICAL CONNECTIONS AND TERMINALS ARE TIGHT

[] VERIFY GAS PRESSURE TO UNIT GAS VALVE IS WITHIN SPECIFIED RANGE

[] CHECK GAS PIPING FOR LEAKS

[] CHECK THAT INDOOR-AIR FILTERS ARE CLEAN AND IN PLACE

[] CHECK THAT OUTDOOR AIR INLET SCREENS ARE IN PLACE

[] VERIFY THAT UNIT IS LEVEL

[] CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE, AND VERIFY SETSCREW

IS TIGHT

[] VERIFY THAT FAN SHEAVES ARE ALIGNED AND BELTS ARE PROPERLY TENSIONED

[] VERIFY THAT SCROLL COMPRESSORS ARE ROTATING IN THE CORRECT DIRECTION

[] VERIFY INSTALLATION OF THERMOSTAT

[] VERIFY THAT CRANKCASE HEATERS HAVE BEEN ENERGIZED FOR AT LEAST 24 HOURS

II. START-UP

ELECTRICAL

SUPPLY VOLTAGE LI-L2 L2-L3 L3-LI

COMPRESSOR AMPS -- COMPRESSOR AI

COMPRESSOR A2

COMPRESSOR B 1

SUPPLY FAN AMPS

LI L2 L3

TEMPERATURES

OUTDOOR-AIR TEMPERATURE

RETURN-AIR TEMPERATURE

COOLING SUPPLY AIR

GAS HEAT SUPPLY AIR

F DB (Dry Bulb)

F DB

F WB (Wet Bulb)

PRESSURES

GAS INLET PRESSURE

GAS MANIFOLf) PRESSURE STAGE NO. 1

REFRIGERANT SUCTION CIRCUIT A

CIRCUIT B

REFRIGERANT DISCHARGE CIRCUIT A

CIRCUIT B

IN. WG

PSIG

[] VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS ON PAGE 50

STAGE NO. 2

GENERAL

[] ECONOMIZERMINIMUMVENTANDCHANGEOVERSETTINGSTOJOB REQUIREMENTS

IN. WG

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Book 1 14 PC 111 Catalog No, 534-80211 Printed in U.S.A. Form 48PG-10SI Pg CL-1 9-05 Replaces: New

Tab 1a 16a

CARRIER Package Units(both Units Combined) Manual L0521271

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