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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Electromechanical
48PG20-28
Single Package Rooftop Units
Electric Cooling/Gas Heating with
Controls and PURON® (R-410A) Refrigerant
Installation, Start-Up and Service Instructions
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 .................
II
• 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
Manufacturer
SAFETY
Catalog No. 534-80211
Printed in U,S.A.
CONSIDERATIONS
Installation and servicing of air-conditioning equipment can
be hazardous due to system pressure and electrical components. 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 personnel. 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 pressures 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,
or maintenance can cause property
injury, or loss of life. Refer to the
Manual provided with this unit for
2.
alteration, service,
&tmage, personal
User's Information
mote details.
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 neighbor's phone. Follow the gas supplier's instructions.
4. If you cannot reach your gas supplier, c_dl the fire
department.
reserves the right to discontinue, or change at any time, specifications
PC 111
Page
52
52
52
57-61
57
60
61
CL-I
Control Circuit, 24-V ..................................
Replacement Parts ....................................
Diagnostic LEDs ......................................
TROUBLESHOOTING
..............................
Unit Troubleshooting ..................................
EconoMi$er IV Troubleshooting .......................
Phase Loss Protection ................................
UNIT START-UP CHECKLIST ........................
or designs without notice and without incurring obligations.
Form 48PG-10SI
Pg 1
9-05
Replaces:
New
Step 3 -- Rig and Place Unit -- Inspect unit for transportation &_mage. See Tables 1-3 for physical data. File any
chfim with transportation
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).
All panels must be in place when rigging. Unit is not
designed for handling by fork truck. Dmnage to unit may
result.
IMPORTANT: Units have high ambient operating limits. If ]
limits are exceeded, the units will automatically
lock the
compressor out of operation. Manual reset will be required
to restart the compresso]:
I
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 flashing 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 [nst_dlation Instructions for additional information as required.
When accesso q roof curb is used, unit may be installed on
class A, B, or C roof covering material. Carrier roof curb accessories 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 SUPPORTWhen 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 equally 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 cabinet. Install a gravel apron in front of condenser coil zdr inlet to
prevent grass and foliage from obstructing airflow.
NOTE: Horizontal
required.
units may be installed
agency.
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,
higher level runoff and overhangs.
guard against
water from
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 distribution requirements. Unit operating weight is shown in Table 1.
INSTALLATION
ONTO CURB -- The 48PG units m'e designed to lit on either the accessory full perimeter curb. Correct
placement of the unit onto the curb is critical to operating performance. To aid in correct positioning, 3/s-in. diameter locating 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.
on a roof curb if
Step 2 -- Remove
Shipping Rails -- Remove shipping rails prior to lowering unit onto roof curb. See Fig. 2. The
rails are attached to the unit at both the return end and condenser 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.
Do not allow the shipping rail to drop on the ]'(>ofsurface.
Dmnage to the ]'(>ofsurface may result.
Do not slide unit to position it when it is sitting on the curb.
Curb gasketing material may be &tmaged and leaks may
result.
iROOFSS_S
AS_E_ORY
_T _S_,E_T_ON S
NOT[S:
I, ROOFCUR8
S
i CRRFCUR_OIBCeO
9B_/iB_
_290_)
CRRECYRBOlgC_O
iSgDBi
ACCESSORY
IS SH|PP[O
OISASS[MBL[D.
?.
3.
4.
OI#ENSION$
_OIRECTION
ROOF CURS:
5,
TO PREV[NT
THE HAZARD OF STAGNANT
WAT[R
8UILO*UP
DO NOT £XC[[D CUR8 L[VELING
TOL[RANCES.
CLEARANC[
fi[TWE[I_ UNIT 8AS[ RAIL AND CURB FLAN6[
6.
IN
1) ARE IN UlLLIMET[R$.
OF AIRFLOW.
16 6A. {VA03-56)
ST[EL
IN
TH[
IS
t/4-1N.
MAX
UNIT
CURB
ROOCBRS
CRRFCURgOISC_O
ERRFCURgO 9C00
ON [ACH
SIOE,
__SAS
L VEL]NG
TOLERANC
S:
(6 MM)
,
SG
:::;G
IN
28
RAIL OF UN !
BACK [NO
- ROOFC
RB
i
_GASKE[
(S_PPLIEB
WITS
R£_RN
CUR_)
_
ALIGNMENT SOLE\
IN BASSRAIL OF U_IT
COUNTER FLASHING
ROOFING FELi_
{FILL9 SBPPL_Eg)
(FIELS
CANT STRIP_
SUPPLIEO)
_RIGIO
INSULATION
(FIELD SUPPL_EO)
FRONT
IN[
OPSN NGS
9 S/6 '=
(5S0)
y,
,B
SUPPLY AiR
VIEW"A-A"
Fig. 1 -- Roof Curb Details
_ND
::
SHIPPING
Fig. 2 -- Shipping
Rail Removal
CAUTION
NOTICE
TOWHENRIGGING.
RIGGERS:
ALL PANELS MUST
BE IN PLACE
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 while rigging to
protect coil of unit from damage.
J
J
PG28
DOES
NOT INCLUDE
4300
70.5
ERV ( ENERGY
37.0
RECOVERY
35.2
VENTILATOF
.%
OPTION.
/j_
/
_ OT !$1250 ii_( r68niktgi)fOartidO?moeS
triC_ra_irt_g"
/
x
_'_'_
Fig. 3 -- Rigging Details
/o
o
i
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
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
5 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?]
6 DIMENSIONS A E IN I CHES _E[G_TS AND OIMENSIONSIN [ ]ARE i_
ARM _R
D 0 EHOOD/
IC
ILLI_E TERS 0 R KILOGRA MS
RELIEF
7 _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
8 DIZENS]ORS ARE FROM OUTSIDE OF BASE RAIL¸
ALLO_ _- 5116 [8] O_ EACH SIDE FOR TOP COVER DRIP EDGE¸
iUNIT
Do
IO1
OUTSIDE
_ASERA[L
P3 3/16
1589]
ss-
_
OF
7Is
I
-!_1
AIRFLOW
/
Y
CENTER OF GRAV]IY 4
_
I?61
4 MI_
1102]
L3511 _
1841 gl
{THRU T_E CURB POWER)
J
7/8"
KO
144] j
{THRU THE CURB CONTROL}
=` DRA[
_
P" 4314
5
-
It
AIR
_
-
|-U
_S-
• :
&
72_IIU
6824
{31D]
6721
[305]
7110
[3SO]
7855
[3551
843 8
[383]
9UD D
[4401
4721
{214]
4?5 _
[216]
4U_
121D]
5420
124U]
596 8
[271]
UND 3
1_86]
MOTOR
ACCESS PANEL
[751}
ACCESS_
[]
_---2D- 3/4 ;_
I_
RETURN
AIR
l
I
4"15/16
[38D]
[$49]
CORNER
[25
61/1_
_INSICE
3-118
[79]
9/1D_
[1208]
liB?}
L___U
--5"i/4
[1341
NPT
DRAIN CONNECTION
mm
[67i 5/8
B
BASE RAIL
3:40
SCALE
[1541
X
*DUCT SIZE
,
,
,
,
,
d "
J
l.J
3-
3141
3 4
,
_
/
3 DIA _Oi[
79- 1/8
[2OIO]
_
BAROMETRIC
RELIEF
HOOCI _
/
/1;.':
_'"
_
I,!'i
_.
e
-
,
_ILIER
COMPR S OR
, I _l
L/
/
'oo"'"_'
]/I
,
CONTROL_OX/
r,
/U
,
-
"
L---_!T'.'?_. 'iN_]_
_
.....
..................
.
IJ ........
"II
....
l:;,.
:627
[572}
NGTALLEG
[HOOD E ELD
_ ,,5,
i
296
[7521
396
[752]
33?
[8451
WEIGHT
[KG]
[
z
t
121
.....,
354
[8991
359
[9_2]
341
[8661
783/4
[1301
HOOO_
r.--_ . . . P __-L,.,I
I
[
I
i
i
i
i
CORNER
LB
L._
OUTSIDE
:
i
CONDERSATE
_! 696
} 11768]
725
t1842]
i
U71
i 11704]
LOCATION
Z
H21[
PIPE
t_
13DI/1U
[33D4]
130-1/161
[3304]
HU-?/1U
[2957]
i196_1/16
i172-[5/1_
i
[49891
i
[4392]
i 159-1/4
i ]45-3/4
I [42981
i
[3701]
CONNER
CENPER OF GRAVITY
X
Y
I
SECPIONA A
_2-
/
3/4
LENGTH
UNIT
G
SLAPIPL
Y
,'r -WL:o:
[
THE CURB POWER}
S" KO
[?_l JJ
i-S/4"
KO
[441
LENGTH
UNIT
F
I DUCT
I?3o]FLANGE
[595]
(T_RU
I
_ _½
[lOUl
S
2173
[125C1
LENGTH
UNIT
E
I
I
LI,
48PG28
57_3/4
H467]
57-3/4
H4611
69_3/4
11771}
I
60
I
I
48PG24
3588
[I_74]
FiE HT
UNIT
@
I
I
D523L
L
'_DImDIRECTiON
48PG20
l'
T
OPERATING i
_EIGRT LOWl
GAS (4SPUD]
LR [KGIi
2480
[11P51
SIZE
[HINGED}
_
I
_-ua
!
I / !.
AIR
"
'H:NG[U)
62-
ACCESS
,ii
11976"_/41191
,
_,
".
_......_.!]_
_
HUV Gr _ CONV_
OUTLET {O;T]ON)
_
_._......
AIR
us
.....
;.:
HEAT SECT ON_
AC
_AN :
OPERATING
POSITION
(OPTION1
I
__1-1
G
_
]
i
V_/_
I_T
CONNECTION
{ 06_
i
'q
!
_oAs'
-o,
CON_ECTION
_"
_4q/4
86518
[2199]
i_oB]
NON FUSED DISCONNECT _
HANDLE IOPTION/FIZLD
I_SIALLZD)
i_]_
I_IF_VI
:O.E{.O,_"l_t
9/16
POWEREXHAUSt
LEFT
•
'oa'-'_
.o,,,
II
"
RIGHT
F_
I_
Fig. 4 -- Base Unit Dimensions
-
,,;DISH.°.s.co.
!
._./
6 W8
[1561
1
/
*
I
[199U] R
/
T
_?u.,
. .,D,,,6"]_
io,, !fcEss,
E. €
I
O O
E: - -XHA
, [,D._,_
\
IIiHING[D_
._....
6
,
Table 1 -- Physical Data
UNIT 48PG
20
VOLTAGE
NOMINAL
208/230
CAPACITY
(Tons)
OPERATING
WEIGHT (Ib)
48 Series (Low Heat) AI/AI*
and 460
24
208/230 and 460
575
208/230 and 460
18
18
20
20
25
25
2480
2480
2588
2588
2773
2773
2
85, NA, 85
2
85, NA, 85
TXV
TXV
Puror'_
TXV
25.3
25.3
25.3
25.3
35.7
33.5
COMPRESSOR
ouan,,,
Number of Refrigerant Circuits
OII (ounces)
Comp A1, A2, B1
REFRIGERANT
TYPE
Expansion Device
Change Type
Operating
Charge (Ib)
Circuit A
Circuit B
REFRIGERANT
SUBCOOLER
Heat Exchanger Size
Expansion Device
B15Hx26x26
TXV
CONDENSER
COIL
Rows...Flns/Inch
Quantity
Length of Tube Sheets (in.)
Width (in.)
Total Face area (sq. it)
CONDENSER
.om,na,
Om,,o,a,.,,an.,
(in.)
4...22
1/4...1100
1400
EVAPORATOR
COIL
Rows...Flns/Inch
Width (In.)
Length Face
of Tube
Sheets
Total
area (sq
it)
EVAPORATOR
FAN
Quantgy...SIze
(in.)
Type Drive
Nominal
Cfm
Motor Bearing Type
Maximum Allowable
(In.)
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
Vertical
Stage 1
Stage 2
VerUcal
Efficiency (Steady State) %
Temperature
Rise Range
Gas Input (Btuh) MEDIUM HEAT
Stage 1
Stage 2
Vertical
Efficiency (Steady State) %
Temperature
Rise Range
Gas Input (Btuh) LOW HEAT
Stage 1
Stage 2
Vertical
Efficiency (Steady State) %
Temperature
Rise Range
Manifold Pressure
Natural Gas (in. wg)
Natural Gas (in. wg)
Gas Valve Quantity
Gas Valve Pressure Range
MIn-Max Allowable
Field Gas Connection
Size (In...FPT)
HIGH-PRESSURE
Cutout
Reset (Auto)
SWITCHES
VerUcal
Horizontal
(in. wg)
(pslg)
(pelg)
OUTDOOR AIR INLET SCREENS
Ouantlty...Slze
(in.)
RETURN-AIR
FILTERS
Quantgy...Slze
{In.)
LEGEND
TXV
--
Thermostatic
*Aluminum
evaporator
Expansion
Fully Hermetic
i
B15Hx26x26
TXV
2
85, NA, 85
Valve
coil/aluminum
condenser
coil.
2...17
2
80.3
60
33.46
Scroll
2
85, NA, 85
Refrigerant
i
2
85, 85, 85
(R-410A)
TXV
35.7
33.5
B15Hx26x26
TXV
Enhanced
2...17
2
80.3
60
33.46
FAN
Quantgy...Dlameter
Motor Hp...Rpm
Waits Input (Total)
28
575
B15Hx26x26
TXV
Copper Tubes, Aluminum Lanced
3...17
3...17
3
3
80.3
80.3
60
60
33.46
33.46
575
i
2
85, 85, 85
TXV
TXV
49.3
24.3
49.3
24.3
B15Hx26x36
TXV
B15Hx26x36
TXV
3...17
3
80.3
60
33.46
3...17
3
80.3
60
33.46
Fins
Propeller
.0001 1000
10001 1000
,000
4...22
1/4...1100
1400
4...15
Enhanced
4...15
48
69.4
23.13
48
69.4
23.13
6...22
1/4...1100
2100
6...22
V4...1100
2100
Copper Tubes, Face Split, Aluminum
I
4...15
4...15
I
48
69.4
23.13
2...15 x 11
Belt
7000
Ball
1400
2...15 x 11
Belt
7000
Ball
1400
Centrifugal,
2...15 x 11
Belt
8000
Ball
1400
225
0.13629
Natural
225
0.13629
Natu_l
225
0.13629
Natural
6...22
V4...1100
2100
6...22
V4...1100
2100
Double-Wavy
I
Fins
4...15
4...15
I
60
69.4
28.92
60
69.4
28.92
48
69.4
23.13
Belt Type
2...15 x 11
Belt
8000
Ball
1400
225
0.13629
Natu_l
2...15 x 11
Belt
10,000
Ball
1400
2...15 x 11
Belt
10,000
Ball
1400
225
0.13629
Natural
225
0.13629
Natural
0.98
0.44
317,000
400,000
82
25-55
281,000
365,000
81
25-55
199,000
250,000
82
15-45
0.98
0.44
317,000
400,000
82
25-55
281,000
365,000
81
25-55
199,000
250,000
82
15-45
0.98
0.44
317,000
400,000
82
25-55
281,000
365,000
81
25-55
199,000
250,000
82
15-45
0.98
0.44
317,000
400,000
82
25-55
281,000
365,000
81
25-55
199,000
250,000
82
15-45
0.98
0.44
317,000
400,000
82
25-55
281,000
365,000
81
25-55
199,000
250,000
82
15-45
0.98
0.44
317,000
400,000
82
25-55
281,000
365,000
81
25-55
199,000
250,000
82
15-45
3.00
2.95
1
5.5-13.0
.235-.469
3/4
3.00
2.95
1
5.5-13.0
.235-.469
3/4
3.00
2.95
1
5.5-13.0
.235-.469
¾
3.00
2.95
1
5.5-13.0
.235-.469
¾
3.00
2.95
1
5.5-13.0
.235-.469
¾
3.00
2.95
1
5.5-13.0
.235-.469
3/4
630 ± 10
505 ± 20
630 ± 10
505 ± 20
630 ± 10
505 ± 20
630 ± 10
505 ± 20
630 ± 10
505 ± 20
630 ± 10
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
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.)
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.)
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)
20
208/230 and 460
24
575
3.7
1750
4.26
3174
56HZ
7&
685-939
2.7
3.7
6.8
13/16
Fixed
11.293-13.544
1 ...BX38...39.8
42
6
812
9,81-13,055
1 -.BX40-,41.8
34
6
853
11.293-13.544
1 -.BX38...39.8
42
6
812
5
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
5
1750
5.75
4290
$184T
1%
949-1206
3.7
4.7
6.8
13/16
Fixed
9.81-13.055
1 ...BX38_.39.8
43
6
1078
43
6
1078
5
1750
5.75
4290
$184T
1%
949-1206
3.7
4.7
6.8
13/16
Fixed
9.81-13.055
1 _.BX38._39.8
43
6
1178
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
5
1750
5.75
4290
$184T
11&
751-954
3,7
4,7
8,6
13/16
Fixed
208/230 and 460
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
3.7
1750
4.26
3174
56HZ
7/s
685-939
2.7
3.7
6.8
13/16
Fixed
7.5
1750
8.63
6434
$213T
13/8
941-1176
4.8
6.0
8.9
1_16
Fixed
9.025-12.179
1 ...BX42.-43.8
28
575
208/230 and 460
575
5
1750
5.75
4290
S184T
l_&
751-954
3.7
4.7
8.6
5
1750
5.75
4290
$184T
1%
687-873
3.7
4.7
9.4
5
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
31
6
780
13/16
13/16
Fixed
9.81-13.055
1._BX40...41.8
34
6
853
Fixed
9.81-13.055
1 _.BX41 _.42.8
5
1750
5.75
4290
S184T
l_&
949-1206
3.7
4.7
6.8
5
1750
5.75
4290
$184T
l_&
805-1007
4.8
6
10.4
31
6
780
13/16
1_16
Fixed
9.81-13.055
1...BX38...39.8
Fixed
9.81-13.055
1_.BX45...46.8
43
6
1078
34
6
906
5
1750
5.75
4290
S184T
11/8
805-1007
4.8
6
10.4
13/16
Fixed
9.81-13.055
1 ...BX45...46.8
34
6
906
7.5
1750
8.63
6434
$213T
13&
941-1176
4.8
6.0
8.9
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
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
13/16
Fixed
9.025-12.179
1-.BX42...43.8
39
39
39
39
39
39
6
1059
6
1059
6
1059
6
1059
6
1059
6
1059
10
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
47
6
1156
10
1750
11.50
8579
$215T
10
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
47
6
1156
10
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
47
6
1156
10
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
47
6
1156
10
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
47
6
1156
1014-1297
4.3
5.5
7.4
13/16
Fixed
9.025-12.179
2_.BX38...39.8
47
6
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,)
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.)
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)
20
208/230 and 460
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
24
575
208/230
and 460
3,7
1750
4,26
3174
56HZ
7/8
896-1227
2.7
3,7
5.2
28
575
575
5
1750
5,75
4290
S184T
1%
687-873
3,7
4,7
9.4
13/16
Fixed
9,81-13.055
1 ..,BX41 .,.42.8
5
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
31
31
6
78O
6
78O
5
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
Fixed
11.293-13.544
1._BX35...36,8
55
39
55
39
34
34
6
1062
6
991
6
1062
6
991
6
906
6
906
5
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
5
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
13/16
5
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
5
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
208/230 and 460
5
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
5
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
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
5
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
7.5
1750
8,63
6434
S213T
941-1176
4.8
6.0
8.9
Fixed
9,025-12.179
1,.,BX42...43,8
5O
5O
5O
5O
39
39
6
1264
6
1264
6
1264
6
1264
6
1059
6
1059
7,5
1750
8.63
6434
$213T
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
7,5
1750
8.63
6434
$213T
7,5
1750
8.63
6434
S213T
lO
175 o
11.5o
8579
S215T
1%
1014-1297
4,3
5,5
7,4
13/16
Fixed
9.028-12.179
1 ,..BX38.,.39.8
lO
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
1096-1339
5,4
6,6
8,6
13/16
Fixed
9.025-12,179
1...BX42,..43.8
13/s
1096-1339
5,4
6,6
8,6
13/le
Fixed
9,025-12.179
1.,.BX42,..43,8
1096-1339
5,4
6,6
8,6
13/16
Fixed
9,025-12.179
1,..BX42,..43.8
41
41
41
41
47
47
6
1218
6
1218
6
1218
6
1218
6
1156
6
1156
ALIGNMENT
HOLE
(IN BASE RAIL)
ALIGNMENT
HOLESHOULD
LINE UP WITH
ROOFCURB
EDGE FLANGE
EDGE
FLANGE/;q
Fig. 5 -- Alignment
RETURN
SUPPLY
OPENING
OPENING
CURB
ALIGNMENT
HOLES FOR
CURB-BOTH
SIDES
Hole
Details
I_CURB[_
SUPPLY
OPENING
OPENIN_,,.--
ROOF
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 completed 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.
_/
RETURN
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 conditioned 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.
I
ECONOMIZER
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, fieldsupplied 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 applicable 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 returnair 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 comfolt may be compromised
when these lower air temperatures
are used with insufficient heating temperature dse.
Step 5 --
\
SEE
NOTE
I R@
'
V"
AIR
OUT
NOTE: Do not drill in this area; damage to basepan may result in
water leak.
Fig. 7 -- Air Distribution
-- Vertical
Supply/Return
ECONOMIZER
Make Unit Duct Connections
SEE
SEE
VERTICAL CONFIGURATION
-- Unit is shipped for vertical 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.
HEAT
EXCHANGER
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 obtained from field-supplied
ceiling diffuser.
;,
Shaded areas indicate block-off pans.
Fig. 9 -- Concentric
Step 6 --
Install
Flue Hood
Duct
Details
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 retaining 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 inst_dlation.
NOTE: When properly installed, the flue hood
with the combustion fan housing. See Fig. 11.
Step 7 --
Trap Condensate
FLUE HOOD
INLET HOOD
will line up
Fig. 10 -- Flue and Inlet Hood Locations
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 drainage. Install a trap at least 4 in. deep and protect against freezeup. 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 U 8 fi. Therefore,
an 18-1l long gas pipe would have a minimum of 3 support
beams.
COMBUSTION
FAN HOUSING
HEAT
EXCHANGER
SECTION
INDUCED-DRAFT
MOTOR
MAIN BURNER
- SECTION
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.
Fig. 11 -- Combustion Fan Housing Location
10
Step 9 -- Make Electrical
Do not pressme test gas supply while connected to unit.
Always disconnect union before servicing.
When installing units, provide disconnect per NEC (National Electrical Code) of adequate size (MOCP [Maximum Overcurrent 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 equipment ground.
I must
MPORTANT:
not be less Natural
than 5.5gas
in. pressure
wg or greater
at unitthan
gas 13.0
connection
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
Connections
FIELD POWER SUPPLYUnit is factory wired for voltage shown on unit nameplate. Be sure to check for conect
voltage.
Route power and ground lines through control box end panel or unit basepan (see Fig. 4) to connections as shown on unit
wiring diagram and Fig. 15.
MOTOR
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 correction must be made to the incoming powel:
DRAIN CONNEC
ilON
[1208[
5-1/4
[132]
1x
RETURN
AIR
SUPPLY
AIR
Fig. 12-
Unit cabinet must have an uninterrupted, unbroken electrical 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 compartment, or conduit approved for electric_d ground when
installed in accordance with NEC, ANSI/NFPA (American
National Standiuds Institute/National
Fire Protection Association), 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.
Condensate Drain Details
MINIMUM
PITCH
ONE IN. PER
10 FT OF LINE
t
TO ROOF
DRAIN
,,,I_ROOF
CURB
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%.
5_
NOTE: Trap should be deep enough to offset maximum
difference. A 4-in. trap is recommended,
Fig. 13-
SEE
NOTE
Field wiring must conform to temperature
type "T' wire. All field wiring must comply
local requirements.
Condensate
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 thermostat according to the installation instructions included with
accessory. Locate thermostat assembly on a solid interior wall
in the conditioned space to sense average temperature.
unit static
Drain Piping Details
MANUAL SHUTOFF
(FIELD SUP_
GAS
Route thermostat cable or equivalent single leads of colored
wire from subbase terminals through conduit into unit to lowvoltage 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 C minimum). For 50 to 75 ft,
use no. 16 AWG insulated wire (35 C minimum). For over
75 ft, use no. 14 AWG insulated wire (35 C Minimum). 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.
(118" NPT PLUG)
TO
UNIT
lOgaN U N
_--_
='-"---
SEDIMENT
limitations for
with NEC and
TRAP
Fig. 14 -- Field Gas Piping
11
I
I
TBI
FIELD
I
_
F_q
5.
L.......
6.
ow
(/)a.
l
F,
7.
1
t
1
I
EQUIP
GND
LEGEND
EQUIP
GND
NEC
TB
-----
8.
Equipment
Ground
National Electrical Code
Terminal Board
9.
NOTE: The maximum wire size for TB1 is 2/0.
10.
Fig. 15 -- Field Power Wiring Connections
THERMOSTAT
I
TB2Jll
1_
Fig. 16-
I
I
I
I
I
[_ 2
[_ 3
[_ 4
[] 5
[_ 6
[_ 7
VOLTAGE
All
I
[_8
Field Control Thermostat Wiring
Set heat anticipator
10 --
Install
STAGE 1 AND 2
(W1 AND W2) ON
0.44
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
tion). Save the screws. See
of components.
2. Hood sides _ue fastened to
Remove the hood sides and
3.
flange of both hood
the hood top panels.
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.
Apply seal strip _dong the entire length of the bottom
flange of the hood top. See Fig. 18.
[nstall the bottom ptut of the hood top using 4 screws providedi See Fig. 18.
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.
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 adjustment slots. See Fig. 20.
Settings may be changed slightly to provide a greater degree
of comfort for a particular installation.
Step
flange of both hood
the unit back panel.
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.
settings as follows:
STAGE 1
(Wl) ON
0.98
the filter track with 4
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 assembled outdoor air hood.
ASSEMBLY
I
facing outward from the unit. Install
screws provided.
Apply se_d strip (provided) to back
sides where hood side connects to
See Fig. 18.
Apply seal strip (provided) to top
sides where hood sides connect to
See Fig. 18.
HOOD TOP
return end of unit (hood secFig. 17 for shipping location
HOOD
SIDE
HOOD TOP
BOTTOM HALF)
(TOP HALF)_
HOOD
SIDE
sides of outdoor air opening.
save the screws (3 each side).
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.
RETURN AIR
SECTION
NOTE: On units without economizers, the components
are attached to the unit basepan. To access the components, remove the panel below the outdoor air intake
section.
4.
Fig. 17 -- Outdoor-Air Hood Component
Shipping Location
Remove inner filter track from shipping position in outdoor section. Position inner filter track so the track is
12
Table 4A -- Electrical Data (Units Without Optional Powered Convenience Outlet)
COMPRESSOR
UNIT
SIZE
48HG
VOLTAGE
NOMINAL
RANGE
VOLTAGE
(3 Ph, 80 HZ)
MIn
Max
POWER
OFM
No. 1
RLA
LRA
No. 2
RLA
LRA
IFM
POWER
EXHAUST
No. 3
RLA
LRA
Qty
Hp
FLA.. Hp
(ea)
3.7
FLA
10.6/
Qty
5
187
253
28.2
208
28.2
208
4
0.25
10
3.7
5
414
506
15.4
104
15.4
104
4
0.25
1
5.9
2
1
5.9
2
1
5.9
4.8
633
12.8
83
12.8
83
4
0.25
0.7
7.5
5
208/230
187
253
32.1
240
32.1
240
6
0.25
10.6/
46O
414
506
15.4
110
15.4
110
6
0.25
633
12.8
88
12.8
88
6
0.25
0.7
7.5
5.9
24.2/22
187
253
28.2
208
28.2
208
28.2
208
6
0.25
1.5
7.5
414
506
15.4
104
15.4
104
15.4
104
6
0.25
0.7
7.5
518
633
12.8
83
12.8
83
12.8
83
6
0.25
0.7
7.5
1
3.1
1
3.1
1
2.4
1
2.4
11
1
2.4
16.7/15.2
1
5.9
24.2/22
0.5
1
5.9
30.8/28
1
5.9
7.6
1
3.1
11
0.3
1
3.1
14
1
3.1
6.1
1
2.4
9
0.24
1
2.4
11
2
See Legend
0.3
0.24
2
10
3.1
9
2
575
1
6.1
2
5
3.1
14
2
10
1
11
2
46O
5.9
7.6
2
5
1
4.8
2
10
5.9
30.8/28
2
208/230
1
and Notes on page 15.
]3
1
2.4
MOCP
DISCONNECT
SIZE
FLA
MCA
MOCP
MCA
79
100/100
80/ 80
100/100
84/
83
92/
91
100/100
92/ 92
100/100
98/
96
86/
85
100/100
86/ 86
100/100
91/
89
98/
96
100/100
98/ 98
100/100
105/103
94/
91
100/100
94/ 94
100/100
100/
105/103
125/125
105/105
125/125
113/111
101/
97
97
125/100
101/101
125/125
107/104
113/109
125/125
113/113
125/125
121/118
42
50
42
50
44
48
60
48
60
51
45
60
45
60
47
51
60
51
60
55
48
60
48
60
51
55
60
55
60
58
51
60
51
60
55
58
60
58
60
62
38
50
38
50
4O
43
50
43
50
45
41
50
41
50
43
45
50
45
50
49
43
50
43
50
45
47
60
47
60
100/100
92/ 92
100/100
125/125
104/104
125/125
110/109
91
104/103
0.5
SUPPLY
UNITS WITH
OPTIONAL HACR
BREAKER
80/
98/
2
5
2.4
1
2
10
1
2
2
518
2.4
5.9
2
575
1
1
2
5
2.4
2
2
10
1
16.7/15.2
0.7
7.5
3.1
9.6
2
5
1
POWER
SUPPLY*
92/
2
3.7
3.1
11
2
10
0.3
0.24
1.5
7.5
1
9
2
3.7
3.1
6.1
2
10
1
14
2
518
3.1
11
2
575
1
7.6
2
5
0.5
30.8/28
2
10
5.9
24.2/22
0.7
7.5
1
2
2
460
FLA
16.7/15.2
1.5
7.5
_La_
9.6
2
208/230
Hp
COMBUSTION
FAN MOTOR
96
51
96/
95
100/100
98/ 98
100/100
103/102
110/108
125/125
110/110
125/125
117/115
105/103
125/125
105/105
125/125
112/109
117/115
125/125
117/117
125/125
126/123
112/109
125/125
112/112
125/125
120/118
124/121
150/150
124/124
150/150
133/130
44
50
44
50
46
50
60
50
60
53
46
60
46
60
49
53
60
53
60
56
50
60
50
60
53
56
60
56
60
60
53
60
53
60
56
59
60
59
60
63
39
50
39
50
41
44
50
44
50
47
42
50
42
50
45
47
50
47
50
5O
44
50
44
50
47
49
60
49
60
52
117/116
125/125
117/117
125/125
127/128
129/128
150/150
129/129
150/150
140/139
125/123
150/150
125/125
150/150
135/133
137/134
150/150
137/137
150/150
148/147
132/129
150/150
132/132
150/150
143/140
144/140
150/150
144/144
150/150
157/183
62
70
62
70
67
68
80
68
80
74
65
80
65
80
71
71
80
71
80
78
68
80
68
80
74
74
80
74
80
81
52
60
52
60
56
57
60
57
60
62
55
60
55
60
59
60
60
60
60
65
57
60
57
60
62
62
70
62
70
67
Table 4B -- Electrical Data (Units With Optional Powered Convenience
Outlet)
COMPRESSOR
UNIT
SIZE
48HG
NOMINAL
VOLTAGE
(3 Ph, 60 HZ)
VOLTAGE
RANGE
MIn
Max
NO. 1
RLA
LRA
NO. 2
RLA
LRA
OFM
NO. 3
RLA
LRA
Oty
Hp
IFM
_La_
Hp
POWER
EXHAUST
FLA
Oty
Hp
FLA
(ea)
i
3.7
5
208/230
187
253
28.2
208
28.2
208
4
0.25
10
2
1
5.9
2
1
5.9
2
1
5.9
16.7/15.2
30.8/28
5
460
414
506
15.4
104
15.4
104
4
0.25
633
12.8
83
12.8
63
4
0.25
0.7
7.5
253
32.1
240
32.1
240
6
0.25
3.7
10.6/ 9.6
5
16.7/15.2
2
1.5
7.5
5
460
414
506
15.4
110
15.4
110
6
0.25
2
518
633
12.8
88
12.8
68
6
0.25
0.7
7.5
187
253
28.2
208
28.2
208
28.2
208
6
0.25
1.5
7.5
460
414
506
15.4
104
15.4
104
15.4
104
6
0.25
0.7
7.5
12.8
83
12.8
63
12.8
83
6
0.25
0.7
10
14
5
6.1
7.5
3.1
1
3.1
0.3
1
3.1
1
3.1
1
2.4
1
2.4
1
2.4
1
5.9
1
5.9
1
5.9
1
3.1
0.3
1
1
1
3.1
3.1
2.4
9
0.24
2
10
1
11
2
633
5.9
7.6
2
518
1
30.8/28
2
575
5.9
0.5
2
28
1
24.2/22
2
5
0.5
16.7/15.2
2
10
5.9
11
2
208/230
1
5.9
0.24
2
5
1
2.4
9
2
10
1
6.1
2
575
2.4
14
2
5
1
11
2
10
2.4
7.6
0.7
7.5
1
4.8
2
24
3.1
30.8/28
2
3.7
1
24.2/22
2
10
3.1
11
2
187
0.3
0.24
2
208/230
1
9
2
10
3.1
6.1
2
518
1
14
2
575
3.1
11
2
5
1
7.6
2
10
5.9
4.8
0.7
7.5
1
1
2.4
11
2
14
1
DISCONNECT
SIZE
MCA
MOCP
85/ 84
100/100
85/ 85
100/100
97/ 96
100/100
97/ 97
100/100
91/ 90
100/100
91/ 91
100/100
125/125
103/103
125/125
110/109
MCA
103/101
99/ 96
2
20
0.5
24.2/22
2
3.7
FLA
POWER SUPPLY
UNITS WITH
OPTIONAL
HACR
BREAKER
POWER
SUPPLY*
MOCP
FLA
i
10.6/ 9.6
1.5
7.5
COMBUSTION
FAN MOTOR
2.4
90/
89
103/102
97/
95
100/100
99/ 99
100/100
105/103
110/108
125/125
110/110
125/125
119/116
106/102
125/125
106/106
125/125
113/110
118/114
125/125
118/118
125/125
127/123
45
60
45
60
48
51
60
51
60
55
48
60
48
60
51
54
60
54
60
58
51
60
51
60
55
58
60
58
60
62
54
60
54
60
58
61
70
61
70
65
41
50
41
50
43
46
50
46
50
49
44
50
44
50
46
48
60
48
60
52
46
50
46
50
49
50
60
50
60
54
97/ 96
100/100
97/ 97
100/100
102/101
109/108
125/125
109/109
125/125
116/115
103/101
125/125
103/103
125/125
109/107
115/113
125/125
115/115
125/125
123/121
110/108
125/125
110/110
125/125
118/115
122/120
150/150
122/122
150/150
131/129
117/114
125/125
117/117
125/125
125/122
129/126
150/150
129/129
150/150
139/136
47
60
47
60
49
53
60
53
60
56
49
60
49
60
52
56
60
56
60
60
53
60
53
60
56
59
60
59
60
63
56
60
56
60
60
62
70
62
70
67
42
50
42
50
45
47
50
47
50
50
45
50
45
50
48
50
60
50
60
54
47
50
47
50
50
52
60
52
60
56
122/121
150/125
122/122
150/150
133/131
134/133
150/150
134/134
150/150
146/144
130/128
150/150
130/130
150/150
141/139
142/139
150/150
142/142
150/150
155/152
137/134
150/150
137/137
150/150
149/146
149/145
175/150
149/149
175/175
162/159
65
80
65
80
70
71
80
71
80
77
68
80
68
80
74
74
80
74
80
61
71
80
71
80
78
77
90
77
90
65
55
60
55
60
59
60
60
60
60
65
58
60
58
60
63
63
70
63
70
68
60
60
60
60
65
65
70
65
70
71
LEGEND
AND NOTES FOR TABLES
4A AND 4B
LEGEND
FLA
-HAOR -IFM
-LRA
-MCA
-MOOP -NEC
-OFM
-RLA
--
EXAMPLE: Supply voltage is 460-3-60.
Full Load Amps
Heating, Air Conditioning and Refrigeration
Indoor (Evaporator) Fan Motor
Locked Rotor Amps
Minimum Circuit Amps
Maximum Overcurrent Protection
National Electrical Code
Outdoor (Condenser) Fan Motor
Rated Load Amps
A
B
C
AB = 452 v
AC = 456 v
*Fuse or HACR circuit breaker.
(_
Average Voltage=
BC = 464 v
452 + 464 + 456
3
1371
3
Determine maximum
(AB) 467 - 462 = 5
(BC) 464 - 457 = 7
(AC) 457 - 456 = 2
= 457
deviation from average voltage.
v
v
v
Maximum deviation is 7 v.
Determine percent voltage imbalance.
7
% Voltage Imbalance = 100 x 45"_"
= 1.53%
NOTES:
1. In compliance with NEC requirements for multimotor and combination 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 voltage is greater than 2%. Use the following formula to determine
the percent voltage imbalance.
This amount of phase imbalance
maximum allowable 2%.
is satisfactory
as it is below the
2%, contact
the local
utility
company
immediately.
I than
MPORTANT:
If the
supplyelectric
voltage
phase
imbalance
is more
3. The convenience outlet full load amps (FLA) are 5, 3, and 3 for
208/230,460, 575-V units, respectively.
% Voltage Imbalance
= 100 x max voltage deviation from average voltage
average voltage
TOP HOOD
SECTION
SEAL
STRIP
LC
I
I
HOOD
SIDE
ADD
SEAL
STRIP
ADD
STRIP
INNER
FILTER
ADD
SEAL
STRIP
HOOD
SECTION
ADD
SEAL
GUIDE
FILTER
RETAINER
FILTER
HOOD
SIDE
MANUAL
DAMPER
(IF EQUIPPED)
UNIT
BACK
PANEL
NOTE: Units with manual damper only use one filter.
Fig. 18 -- Outdoor-Air
15
Hood Details
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.
Fig. 19 -- Outdoor-Air
Hood Assembled
3.
Remove the small cover plate located on the unit corner
post near the control section.
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.
w
MOVEABLE
DAMPER
AIR FILTER POSITION
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.
j
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.
Step 13 --Install
All AccessoriesAfter all of
the factory-installed options have been adjusted, install all
field-installed accessories. Refer to the accesso U installation
instructions included with each accesso q. Consult the Carrier
Price Pages for accesso U package numbers for particular
applications.
Be camlhl when tilting blower assembly. Hoods and blowers are heavy and can cause injury if dropped.
16
},REMOVE
REMOVE
SCREWS (
SCREWS
,,,=,-.,4_0
REMOVE
SCREWS
Fig. 21 -- Power Exhaust or Barometric Relief Damper Mounting Details
J
J
@
©
Fig. 22 -- Bracket and Hood Positioning
17
PRE-START-UP
START-UP
Use the following inforlnation and Start-Up
page CL-I to check out unit PRIOR to start-up.
accordance
ble codes.
spring mounted.
down bolts.
Make the following
a.
b.
c.
d.
4.
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 important 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
fittings.
d.
Make sure that all tools and miscellaneous
have been removed.
Energize the compressoc
3.
The suction pressure should diop and the discharge
sure should rise, as is normal on any start-up.
pres-
If the suction pressure does not drop and the discharge
sure does not rise to normal levels:
pres-
fan is probably
also rotating
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.
in
Compressor damage will occur if rotation is not immediately corrected.
Internal Wiring-
Check all electric_d connections
unit control boxes; tighten as required.
Verify the following conditions:
Make sure that condensate drain trap is filled with
water to ensure proper di'ainage.
2.
NOTE: When the compressor is rotating in the wrong direction, the unit makes an elevated level of noise and does not
provide heating or cooling.
during shipping and
the fins with a tin
M_d_e sure that air filter(s) is in place.
pressure
The suction and discharge pressure levels should now move
to their normal start-up levels.
Inspect all field-wiring and factoly-wiring
connections. Be sure that connections are completed and
tight.
c.
service gages to suction and discharge
1. Note that the evaporator
the wrong direction.
Inspect for oil at all refrigerant tubing connections
and on unit base. Detecting oil generally indicates a
refrigerant leak. Leak-test all refiigemnt tubing connections using an electronic leak detectol: halide
torch, or liquid-soap solution.
b.
hold-
Heater(s)Crankcase heaters are energized as long as there is power to the unit and the compressor is
not operating.
Inspect for shipping and handling damages such as
broken lines, loose parts, or disconnected wires, etc.
Make sure that condenser
fan blade is correctly
positioned in the fan orifice. See Condenser-Fan
Adjustment section on page 49 for more details.
compressor
Crankcase
CAUto, or
a.
or remove
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.
inspections:
Inspect coil fins. If damaged
handling, carefully straighten
comb.
Compressors are internally
Do not loosen
Refrigerant Service Ports-- Each independent refrigerant system has a total of 3 Schmder-type service gage
Proceed as follows to inspect and plepale the unit for initial
st_ut-up:
3.
-- Check that unit has been installed in
with these installation instructions and all applica-
Compressor Mounting-
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.
on all WARNING
labels attached
on
Unit Preparation
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 system contains oil and refrigerant under pressure. To
remove a component, wear protective goggles and proceed as follows:
1. Remove all access panels.
2. Read and follow instructions
TION, and INFORMATION
shipped with, the unit.
Checklist
in
Subcooler Heat Exchanger (SHX) -- The subcooler heat exchanger adds approximately 10 to 15° F of subcooling to the system. Check all valves and TXV (thermostatic
expansion valve).
Evaporator
FanFan 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 specifications. 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.
loose parts
18
Condenser
motol.'s
;u'e
Fans and Motors -- Condenser
factory
set.
Refer
to
Condensel;Fan
fans and
Adjustment
3.
Connect
4.
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.
section (page 49) as required.
Return-Air
Filters-
stalled
in filter tracks
return-air
filters.
NOTE:
For
units
with
standard
2-in.
filtel.s.
must
be removed.
Outdoor-Air
must
be in place
Gas
Heat
follows:
--
Check
(see
Table
4-in.
that
filter
To
install
correct
1 ). Do
not
option,
4-in.
filters
operate
units
ale
filters,
the
Inlet Screens -- Outdoor-air
before
operating
Verify
gas
are
unit
spacers
inlet screens
turning
on
heat
6.
as
7.
1.
Turn
off
to unit.
field-supplied
manual
2.
Connect
pressure
gage
supplied
manual
shutoff
gas
stop,
located
external
located
on field-
Supply
Set themlostat
gas pressure
supply gas tap,
valve
(see
Fig.
AVAILABLE
EXTERNAL
0,4
Rpm
663
Bhp
1.74
STATIC PRESSURE
0.6
5000
590
Bhp
1,47
5500
633
1.82
703
2,11
6000
677
2,21
744
6500
722
2.67
786
2.53
3.01
7000
767
3.17
828
3.53
883
3,88
7500
813
3.74
871
4.12
924
4.48
8000
859
4.36
915
4.77
966
5,15
8500
906
5,05
B
959
5,47
1008
5,87
9000
952
5.81
C
1004
6.25
1051
6,67
Rpm
A
AVAILABLE
AIRFLOW
(Cfm)
1.2
Bhp
2.77
921
3.21
6000
954
3.70
6500
988
5000
5500
A
A
B
C
(in. wg)
0.8
727
2.26
764
2,40
820
2.67
803
2,84
857
842
3,33
EXTERNAL
A
B
C
STATIC PRESSURE
Rpm
84O
Bhp
872
2.94
3.13
9O7
3.42
894
3.64
942
3.95
933
4.21
979
4.53
972
4.83
1017
5.18
1012
5.52
1056
5.88
1053
6.26
1096
6.64
1095
7.07
1136
7.47
940
Rpm
987
Bhp
Bhp
968
3,48
Bhp
A
B
C
2.52
(in, wg)
1,8
1.6
2.0
3,27
Rpm
1032
3.52
Rpm
1076
1014
3,74
1057
4.01
1099
4,27
1042
4,27
1084
4.55
1125
4,83
1114
5.14
1153
5,44
1145
5.79
1183
6,10
1178
6.50
1215
6,82
1213
7.26
1249
7,60
Bhp
B
B
3,77
3,99
4.25
4,55
1073
4.85
1024
4.85
1066
5,17
1106
5,48
7500
1060
5.51
1101
5,84
1140
6.17
8000
1098
6.23
1138
6,58
1176
6.92
1137
1176
7.01
1175
7,38
1212
7.74
1248
8.09
1283
8,45
1214
8,24
1250
8.61
1285
8.99
1319
9.36
8500
9000
B
C
7.86
B
C
D
B
1.0
Rpm
786
Bhp
3.02
Rpm
Units
999
1032
7000
C
D
LEGEND
Bhp
under
to desired set point.
Bhp
2,01
1.4
Rpm
891
13.0 in. wg.
14).
0,2
Rpm
not exceed
Remove jumper wire if the unit will be operating
thermostat mode.
Table 5 -- Fan Performance -- 48PGD20 Vertical Supply/Return
AIRFLOW
(Cfm)
must
to OFE
Return thermostat
to
tap.
chtuge applications
and 3.00 on vertical dischtuge
applications.
If manifold
pressure
must be adjusted,
refer to
Gas Valve Adjustment
section.
NOTE:
before
pressure
After the unit has run for several minutes,
verify the supply 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-
with
unit.
pressures
gage to manifold
without
shipped
filter
in-
pressure
--
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
(C) Mid-High Range: 941-1176 rpm, 8.63 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.
19
C
D
D
Table 6 -- Fan Performance -- 48PGE20 -- Vertical Supply/Return
AIRFLOW
(Cfm)
AVAILABLEEXTERNALSTATICPRESSUSRE(in,
0.4
0.6
0,2
Rpm
677
Bhp
1,80
740
Bhp
2.06
719
2.19
779
2.47
763
2.63
819
2.93
8O7
3.12
861
3.33
851
3.68
842
3.93
897
4.30
8000
891
4,59
943
4.98
8500
940
5.32
B
990
5.72
9000
990
6.12
C
1037
6.54
5000
Rpm
607
Bhp
1.53
5500
652
1.90
6000
699
2.32
6500
746
2.79
7000
794
7500
Rpm
A
AVAILABLE
AIRFLOW
(Cfm)
1.2
B
C
4,65
994
5.00
1038
5.33
991
5.35
1036
5.71
1079
6.07
1036
6.11
1080
6.49
1121
6.87
1082
6.95
1124
7.35
1163
7.73
EXTERNAL
6500
1003
4.35
1046
4.65
1087
4.94
1041
4.98
1082
5.29
1122
5.60
7500
1079
5.67
1119
5.99
1158
6.32
8000
1119
6.42
1158
6.76
1195
1160
7.23
1198
7.59
1234
7.10
7.95
1202
6.12
1238
8.49
1273
8.67
--
Brake Horsepower
Inputto
C
B
C
(in. wg)
1.8
2.0
Rpm
949
Bhp
3.06
Rpm
995
Bhp
3.31
Rpm
1040
Bhp
3.56
Rpm
1083
Bhp
979
3.54
1023
3.60
1066
4.06
1106
4.33
1011
4.07
1054
4.35
1095
4.62
1135
4.90
1127
5.24
1165
5.53
1160
5.91
1197
6.22
1195
6,64
1231
6.96
1231
1269
7.44
1267
7.78
8.30
1303
8,65
1308
9,23
1341
9.60
B
C
D
LEGEND
Bhp
B
STATIC PRESSURE
1.6
3.79
D
4.66
947
967
D
4.05
998
4.34
6000
9000
3.50
958
952
3.27
C
3.01
921
4.02
A
A
884
904
933
8500
833
Bhp
2.57
3.75
5500
C
797
Rpm
850
911
900
B
1.0
Bhp
2,31
3.44
5000
7000
0.8
apm
2.74
3.22
1.4
B
wg)
872
Bhp
2.82
Rpm
Units
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
(C) Mid-High Range: 941-1176 rpm, 8.63 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.
2O
B
C
D
B
D
3.81
Table 7 -- Fan Performance -- 48PGF20 -- Vertical Supply/Return
AVAILABLE
AIRFLOW
(Cfm)
0,2
apm
EXTERNAL
0,4
STATIC PRESSURE
677
Bhp
1.80
5000
607
5500
652
1,90
719
2.19
6000
699
2.32
763
2.63
6500
746
2.79
807
3.12
819
861
794
3.33
851
3.68
904
4.02
7500
842
3.93
897
4.30
8000
891
4,59
943
4.98
947
991
4.65
5.35
8500
940
5,32
990
5.72
1036
6.11
990
6.12
1037
6.54
1082
6.95
9000
A
C
AVAILABLE
AIRFLOW
(Cfm)
A
B
C
Rpm
740
Bhp
2.06
779
2.47
2.93
3.44
EXTERNAL
1,4
1,2
933
3.27
979
3.54
6000
967
3.79
1011
4.07
6500
1003
4.35
1046
4.65
1087
4.94
1041
4.98
1082
5.29
1122
5,60
7500
1079
5.67
1119
5.99
1158
6.32
8000
1119
6.42
1158
6.76
1195
1160
7.23
1198
1202
8.12
7.59
8.49
7.10
7.95
5500
7000
8500
9000
B
C
D
B
C
D
1238
Brake Horsepower
Rpm
850
Bhp
2.57
833
2.74
872
3.22
884
3.01
921
911
3,75
3.50
958
952
994
4.34
5.00
4.05
998
4.66
1038
1036
5.71
5.33
1079
1080
6.49
6.07
1121
1124
6.87
7.35
1163
7.73
A
B
C
(in, wg)
2.0
Bhp
3.06
Rpm
995
Bhp
3.31
Rpm
1040
Bhp
3.56
Rpm
Bhp
1083
3.81
1023
3.80
1066
4.06
1108
4.33
1054
4.35
1095
4.62
1135
4.90
1127
5.24
1165
5.53
1160
5.91
1197
6.22
1195
1231
6.96
1231
6.64
7.44
1267
7.78
1269
8.30
1303
8.65
1308
9.23
1341
9.60
B
C
D
1234
1273
LEGEND
--
C
Bhp
2.31
1.8
2.82
A
B
1.0
Rpm
797
1,6
900
5000
Bhp
A
STATIC PRESSURE
Rpm
949
Rpm
Bhp
0.8
Bhp
1.53
7000
(in. wg)
0,6
apm
Units
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
(C) Mid-High Range: 941-1176 rpm, 8.63 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]
8.87
B
C
D
B
D
Table 8 -- Fan Performance -- 48PGD24 -- Vertical Supply/Return
AVAILABLE
AIRFLOW
(Cfm)
0,2
EXTERNAL
0.4
5,500
Rpm
633
Bhp
1.82
6,000
677
2.21
6,500
722
2.67
7,000
767
7,500
Rpm
STATIC PRESSURE
0.6
Rpm
764
Bhp
2.40
803
2.64
842
3.33
7O3
Bhp
2.11
744
2.53
786
3.01
3.17
828
3.53
883
3.86
813
3.74
871
4.12
924
4,48
8,000
859
4,36
915
4,77
966
5.15
8,500
906
5.05
959
5.47
1008
5.87
9,000
952
5.81
1004
6.25
1051
6.67
9,500
999
6.63
1049
7.09
1094
7.53
10,000
1047
7.53
1094
8.00
1138
8.46
A
B
C
AVAILABLE
AIRFLOW
(Cfm)
1,2
A
B
C
EXTERNAL
1.4
B
C
D
STATIC PRESSURE
1.6
Rpm
921
Bhp
3.21
Rpm
968
Bhp
3.48
Rpm
1014
Bhp
3.74
6,000
954
3.70
999
3.99
1042
B
6,500
988
4.25
1032
4.55
4.27
4.85
1024
4.85
1066
5.17
1106
C
7,500
1060
5.51
1101
5.84
1140
5.48
6.17
8,000
1096
6.23
6.58
1176
6.92
1137
1176
7.01
1136
1175
1212
7.74
7.66
1214
1216
1256
8.77
8.24
9.17
1250
1286
1327
5,500
7,000
8,500
A
B
C
9,000
9,500
10,000
D
9,75
B
C
D
1253
1292
B
C
7.36
10.16
D
1073
LEGEND
Bhp
A
--
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
(C) Mid-High Range: 941-1176 rpm, 8.63 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.
22
Units
(in. wg)
0.8
1.0
Rpm
820
Bhp
2.67
Rpm
872
Bhp
2.94
857
3.13
894
3.64
907
3.42
942
933
4.21
3,95
979
972
4.53
4.83
1017
5.18
1012
5.52
1056
5.88
1053
6.26
1096
6.64
1095
7,07
1136
7.47
1137
7,95
1177
8.36
1180
8.90
1219
9.33
Rpm
1057
Bhp
4.01
Rpm
1099
1084
1114
4.55
A
B
C
D
(in. wg)
1.8
2.0
Bhp
4.27
4.83
5.14
1125
1153
1145
1178
5.79
1183
6.10
6.50
1215
6.82
1213
7.26
1249
7.60
1248
6.09
1283
8.45
8.61
1285
8.99
1319
9.36
9.56
1322
9,95
1355
10,33
16.57
1360
10.98
1393
11,38
D
B
D
5.44
Table 9 -- Fan Performance -- 48PGE24 -- Vertical Supply/Return
AVAILABLE
AIRFLOW
(Cfm)
apm
EXTERNAL
0,4
0,2
apm
Bhp
STATIC PRESSURE
(in. wg)
0.6
0.8
719
763
2,63
8O7
3,12
3.33
851
3,68
904
4.02
842
3.93
897
4.30
947
4.65
8,000
891
4,59
943
4.98
991
5.35
1036
5.71
8,500
940
5.32
990
5.72
1036
6,11
1080
9,000
990
6.12
1037
6.54
1082
6,95
1124
6.49
7.35
9,500
1039
7.00
1085
7.43
1128
7.85
1168
8.27
10,000
1089
7.95
1133
8.40
1174
8.83
1213
9.26
5,500
652
1.90
6,000
699
2.32
6,500
746
2.79
7,000
794
7,500
A
B
C
AVAILABLE
1,2
A
B
C
D
Rpm
779
Bhp
2.47
819
2,93
861
3.44
1.0
Bhp
2.19
AIRFLOW
(Cfm)
EXTERNAL
1.4
Rpm
Bhp
933
1023
3.80
6,000
967
3.79
1011
4.07
1054
4.35
6,500
1003
4.35
1046
4.65
1087
4.94
1041
4.98
1082
5.29
1122
5.60
7,500
1079
5.67
1119
5.99
1158
6.32
8,000
1119
6.42
1158
6.76
1195
7.10
8,500
1160
7.23
1198
9,000
1202
8.12
1238
7.59
8.49
1234
1273
1244
9.07
1279
9.45
1287
10.10
1321
10,51
7,000
9,500
10,000
B
C
D
B
C
D
Brake Horsepower
Inputto
D
B
C
D
Rpm
884
Bhp
3.01
872
3.22
911
3.75
921
3.50
958
952
4.34
4.05
998
994
4.66
5.00
1038
5.33
1079
6.07
1121
6.87
1163
7.73
1207
8.67
1251
9.69
A
B
C
D
(in. wg)
2.0
Rpm
1056
Bhp
4.06
Rpm
1108
1095
4.62
B 1135
4.90
1127
5.24
1165
5.53
1160
5.91
1197
6.22
1195
6.64
6.96
1231
7.44
1231
1267
7.95
1269
8.30
1303
8,65
8.87
1308
9.23
1341
9.60
1314
9.85
1347
10,24
1379
10.62
1355
10.91
1387
11,31
LEGEND
--
C
Bhp
2.74
1.8
Bhp
3.54
A
B
Rpm
833
1,6
Rpm
979
5,500
A
STATIC PRESSURE
Bhp
3.27
Rpm
Bhp
Units
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
(C) Mid-High Range: 941-1176 rpm, 8.63 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.
23
B
C
D
D
Bhp
4.33
7.78
Table 10 -- Fan Performance -- 48PGF24 Vertical Supply/Return
AVAILABLE
AIRFLOW
(Cfm)
EXTERNAL
0.4
0,2
Bhp
1.90
Rpm
5,500
Rpm
652
6,000
699
2.32
6,500
746
7,000
STATIC PRESSURE
0.6
719
Bhp
2.19
Rpm
779
Bhp
2.47
763
2.63
819
2.93
2.79
8O7
3.12
861
794
3.33
851
3.68
7,500
842
3.93
897
4.30
8,000
891
4,59
943
4,98
8,500
940
5.32
990
5.72
9,000
996
6.12
1037
6.54
9,500
1039
7.00
1085
7.43
10,000
1089
7.95
1133
8.40
A
B
C
AVAILABLE
AIRFLOW
(Cfm)
1,2
Bhp
3.27
6,000
967
3.79
6,500
1003
4.35
7,000
1041
7,500
8,000
8,500
A
B
C
9,000
9,500
10,000
D
B
C
D
Bhp
3.54
1011
4.07
1046
4.65
4.98
1082
5.29
1079
5.67
1119
5.99
1119
6.42
1158
6.76
1160
7.23
1198
7.59
1202
8.12
1236
1244
9.07
1287
10,10
C
D
--
Brake Horsepower
Inputto
1.0
Bhp
2.74
872
3.22
3.44
911
3.75
904
4.02
952
4.34
947
4,65
994
991
5.35
1036
6.11
1082
6.95
1126
7.85
1174
8.63
EXTERNAL
A
B
C
D
STATIC PRESSURE
apm
Bhp
884
3.01
921
3.50
958
4.05
998
4.66
5.00
1038
5.33
1036
5.71
1079
6.07
1080
6,49
1121
6.87
1124
7,35
1163
7.73
1168
8,27
1207
8.67
1213
9,26
1251
9.69
Rpm
1108
Bhp
4.33
A
B
C
D
(in. wg)
2.0
1.8
Rpm
1023
Bhp
Rpm
3.80
1066
Bhp
4.06
1054
4.35
1095
4.62
1135
4.90
1087
4.94
1127
5.24
1165
5.53
1122
5.60
1160
5.91
1197
6.22
1158
6,32
1195
6.64
6.96
1195
7.10
1231
7.44
1231
1267
1234
7,95
1269
6.30
1303
8,65
8.49
1273
8,87
1306
9,23
1341
9.60
1279
9.46
1314
9.85
1347
10.24
1379
10,62
1321
10.51
1355
10.91
1387
11.31
B
C
D
LEGEND
Bhp
0.8
1.6
Rpm
979
B
(in. wg)
Rpm
833
1.4
Rpm
933
5,500
A
Units
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
(C) Mid-High Range: 941-1176 rpm, 8.63 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,
24
B
C
D
B
D
7.78
Table 11 -- Fan PerformanceAVAILABLE
AIRFLOW
(Cfm)
6,500
apm
A
8O6
853
3.17
9OO
3.78
4.48
2.78
845
3.34
8,000
892
3.97
939
4.68
948
995
9,000
986
5.46
1042
9,500
1033
6.32
1079
1126
10,000
B
C
10,500
B
1090
7.26
1137
8.07
8.28
1184
1172
9.40
1232
9,20
10.42
1219
10.61
1279
11.74
12,000
1265
11,91
1326
13,17
12,500
1311
13,32
11,000
11,500
D
D
AVAILABLE
AIRFLOW
(Cfm)
1,2
Bhp
3.97
Bhp
4.40
7,000
1024
4.56
7,500
1063
5.25
1066
4.98
1101
5.66
8,000
1104
6.03
1140
8,500
1146
6.91
9,000
1190
9,500
1235
7.89
8.97
10,000
1280
10.16
1310
10,500
1326
11.45
1355
11,000
1372
12,86
B
C
C
D
B
945
4.15
991
4.88
1038
5.69
1085
6.59
1132
D
Bhp
3.25
941
3.84
985
4.51
1030
5,26
1067
5.64
1076
6,10
1112
6.50
1122
7.04
1157
7.46
7.59
1169
8.07
1203
8.52
1180
8.67
1216
9,19
1227
9.86
1263
1274
11.15
1322
12.54
EXTERNAL
1109
5.43
1141
6.10
6.44
1176
6.88
1180
7.33
1214
7.77
1222
1266
8.32
9.42
1255
1296
10.63
11,95
D
9.68
1310
11,76
1342
12.33
1357
13.21
(in, wg)
2.0
5,94
1213
6,59
7,36
1249
8.77
9.88
1340
11.10
1384
12.44
2.5
4.87
10.95
1181
Fan
4.18
1296
1153
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
(C) Mid-High Range: 941-1176 rpm, 8.63 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.
D
982
1024
10.43
Bhp
5,39
LEGEND
Inputto
D
C
Bhp
3.59
1249
Rpm
1130
12,500
Brake Horsepower
C
B
Rpm
943
1,8
Bhp
4.87
12,000
--
B
STATIC PRESSURE
Rpm
1082
C
1.0
Rpm
898
11,500
Bhp
(in. wg)
1,6
Rpm
1035
6,500
A
C
Units
0.8
Bhp
2.93
3.50
1.4
Rpm
988
STATIC PRESSURE
Rpm
854
899
5.25
6,10
7.04
C
Vertical Supply/Return
0.6
Bhp
2.62
797
8,500
A
750
Bhp
2.28
7,500
7,000
EXTERNAL
0,4
0,2
Rpm
48PGD28-
C
D
Rpm
1177
Bhp
5.95
1197
6.48
1222
7.12
1251
7.87
8,24
1283
8.74
1287
9,24
1319
9,74
1327
10,36
1357
10.86
1369
11.59
1398
12.09
D
Table 12 -- Fan Performance -- 48PGE28 -- Vertical Supply/Return
AVAILABLE
AIRFLOW
(Cfm)
Rpm
776
Bhp
2.43
7,000
826
2.98
7,500
878
3.60
929
8,500
9,000
6,500
8,000
9,500
A
C
10,000
10,500
825
875
3.22
925
3.89
4.31
975
4.73
981
5.11
1026
5.56
1033
6.00
1076
1085
6.98
1137
8.08
1190
11,000
1242
9.28
10.60
11,500
1294
12.04
12,000
1347
13,60
D
Rpm
Bhp
2.75
B
EXTERNAL
0.4
0,2
A
D
Rpm
871
Bhp
3.05
0.8
1.0
Rpm
915
Bhp
3.37
B
Rpm
959
Bhp
3.72
1000
4.34
1043
5.05
1088
5.86
918
3.58
959
3.98
4.28
1005
4.69
1015
5.11
1052
5.48
5.97
6.94
1100
1148
6.37
1134
6.76
6.49
1064
1114
7.36
1181
7.77
1128
7.53
1164
8.00
1198
8.45
1179
8.66
1214
9.18
1247
1230
9.91
1265
10.46
1282
11.28
1316
11.86
1333
12.76
1367
13.39
--
B
C
D
B
(in. wg)
966
B
C
A
STATIC PRESSURE
0.6
Units
C
D
C
D
1229
8.89
9.65
1278
10.12
1297
10.97
1327
11,47
1347
12.41
1376
12.93
Rpm
1145
Bhp
5.57
12,500
AVAILABLE
AIRFLOW
(Cfm)
6,500
1,2
B
Rpm
1004
Bhp
4.11
7,000
1041
4.73
7,500
1081
5.44
8,000
1124
8,500
9,000
C
D
EXTERNAL
1.4
Rpm
1050
1083
Bhp
4.55
6.26
1160
6.68
1168
7.17
1202
1214
8.20
7.60
8.64
1245
Bhp
1096
5.04
C
Rpm
D
2.0
6.14
1159
6.32
1199
6.82
1240
7.36
1196
7.13
1233
7.62
1270
8.15
1235
8.06
1269
8.54
1304
9,05
1277
9.10
1309
9,58
1341
10,09
1381
11,25
D
1260
9.33
1290
9.79
1320
10.26
1351
10.74
1308
10,58
1337
11.05
1365
11.53
1394
12.03
10,500
1356
11.95
1384
12.44
11,500
12,000
12,500
LEGEND
Inputto
6.70
1170
9,500
Brake Horsepower
6.14
1214
5.62
10,000
--
Bhp
1192
1126
11,000
Bhp
1.8
Rpm
C
1120
D
(in. wg)
1.6
5.15
5.86
C
STATIC PRESSURE
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
(C) Mid-High Range: 941-1176 rpm, 8.63 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.
26
D
Table 13 -- Fan Performance -- 48PGF28 -- Vertical Supply/Return
AVAILABLE
AIRFLOW
(Cfm)
0,2
apm
775
Bhp
2.43
7,000
826
2.98
7,500
878
3.60
929
8,500
9,000
6,500
8,000
9,500
10,500
0.8
1.0
875
3.22
925
3.89
4.31
975
4.73
981
5.11
1026
5.56
1033
6.00
1076
6.49
1114
6.94
1148
7,36
1085
6.98
1128
7.53
1164
8.00
1198
8.45
1137
8.08
1179
8.66
1214
9.18
1247
1190
1230
9.91
1265
10.46
1282
11.28
1316
11.86
1333
12.76
1367
13.39
11,000
1242
9.28
10.60
11,500
1294
12.04
12,000
1347
13,60
D
(in. wg)
0.6
825
B
10,000
apm
STATIC PRESSURE
Bhp
2.75
A
C
EXTERNAL
0,4
Units
A
B
C
D
A
B
C
D
Rpm
871
Bhp
3.05
918
3.58
966
4.28
1015
5.11
1052
5.48
1064
5.97
1100
B
C
D
Rpm
915
Bhp
3,37
Rpm
959
Bhp
3,72
959
3,98
1005
4,69
1000
4.34
1043
5.05
1088
5.86
6,37
1134
6.76
1181
7.77
B
C
D
1229
8.89
9,65
1278
10.12
1297
10.97
1327
11,47
1347
12.41
1376
12,93
Rpm
1145
Bhp
5.57
Rpm
12,500
AVAILABLE
AIRFLOW
(Cfm)
6,500
1,2
B
Rpm
1004
Bhp
4.11
1041
4.73
1081
5.44
8,000
1124
8,500
1168
1214
7,000
7,500
9,000
C
D
EXTERNAL
1.4
Rpm
1050
Bhp
1,8
4.55
Rpm
Bhp
1098
5.04
C
5.15
1120
5.86
6.26
1160
6.68
7.17
1202
7.60
8.20
D 1245
2.0
8.15
6.14
1159
6.32
1199
6.82
1214
1240
1196
7.13
1233
7.62
1270
1235
8.06
1269
8.54
1304
9,05
8.64
1277
9.10
1309
9.58
1341
10,09
1381
11,25
D
D
1260
9.33
1290
9.79
1320
10.25
1351
10.74
1308
10,58
1337
11,05
1365
11.53
1394
12.03
10,500
1356
11.95
1384
12,44
11,500
12,000
12,500
LEGEND
Inputto
6.70
7.36
1170
9,500
Brake Horsepower
6.14
5.62
10,000
--
Bhp
1192
1126
C
11,000
Bhp
(in, wg)
1,6
1083
C
STATIC PRESSURE
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
(C) Mid-High Range: 941-1176 rpm, 8.63 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.
27
D
Table 14 -- Fan Performance-
48PGD20 -- Horizontal Supply
AVAILABLE
AIRFLOW
(Cfm)
0,2
5000
5500
6000
F
6500
7000
7500
8000
G
H
8500
EXTERNAL
0.4
Rpm
862
Bhp
2.65
937
3.26
1013
3.58
1089
4.48
1166
5.52
1243
6.71
1320
8.07
1398
9,60
Rpm
Bhp
2.93
917
F
G
H
988
1060
3.56
1133
1207
4.89
1282
7.18
1356
8.57
Rpm
F
3.96
5.96
G
R
STATIC PRESSURE
0.6
969
Bhp
3.21
1036
3.53
1105
4.35
1175
5,31
1247
6.41
1319
7.66
1392
9.08
and Return Units
(in. wg)
0.8
apm
1 .O
1083
Bhp
3.17
3.90
1149
4.75
G
1216
5.73
R
1285
1355
6.86
1019
F
Rpm
1066
1127
Bhp
3.52
1191
5.16
1256
6.17
1323
7.32
8.14
1391
8,63
Bhp
5.02
Bhp
G
Rpm
1280
H
1331
6,30
1384
7,31
F
G
H
4.28
9000
AVAILABLE
AIRFLOW
(Cfm)
5000
5500
6000
6500
7000
1.2
F
G
H
EXTERNAL
1.4
Rpm
1112
Bhp
3.88
F
Rpm
1156
Bhp
4.25
1171
4.67
G
1212
5.06
1232
5.57
1271
6.00
1295
6.61
1333
7.06
1360
7,80
1396
8,27
H
G
H
STATIC PRESSURE
1,6
G
Rpm
1240
1253
5.47
H
1292
5.88
1310
6.43
1348
6.87
1369
7,52
8500
9000
LEGEND
Brake Horsepower
Inputto
2.0
Bhp
4.63
8000
--
1.8
Rpm
1199
7500
Bhp
(in. wg)
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.
28
5.42
Table 15 -- Fan Performance-
48PGE20 -- Horizontal Supply and Return Units
AVAILABLE
AIRFLOW
(Cfm)
0,2
apm
5000
5500
875
Bhp
2.74
952
3.38
6000
1029
3.74
6500
1106
4.67
F
apm
F
G
931
Bhp
3.04
1003
3.32
1077
4.15
1151
5.11
1226
6.23
7000
G
1184
5.75
7500
H
1262
7.00
1302
7,50
1341
8,41
1378
8.95
8000
EXTERNAL
0,4
H
F
G
H
STATIC PRESSURE
0.6
Rpm
984
Bhp
3.34
1053
3.70
1123
4.56
1194
5.56
1266
6.71
1340
8.01
(in. wg)
0.8
Rpm
F
G
H
1.0
1035
Bhp
3.33
1100
4.09
1167
4.98
1236
6.01
1306
7.19
1377
8,53
F
G
H
Rpm
1083
Bhp
3.69
1145
4.49
1210
5.41
1276
6.47
1344
7.68
8500
9000
AVAILABLE
AIRFLOW
(Cfm)
1,2
5000
F
Rpm
1130
5500
G
1189
4.90
1251
5.85
1315
6.94
1381
8,18
6000
6500
7000
H
EXTERNAL
1,4
Bhp
4.07
G
H
Rpm
1174
Bhp
4.45
1232
5.31
1292
6.29
7.41
1354
G
H
STATIC PRESSURE
1,6
Rpm
1259
1273
5.72
1313
5.23
6.15
1331
6.74
1369
7,19
1391
7.89
8500
9000
LEGEND
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
(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.
and 460-v), 873-1108
2.0
Bhp
4.84
8000
--
1.8
Rpm
1218
7500
Bhp
(in. wg)
rpm, 5.75 bhp (575-v)
29
Bhp
G
Rpm
Bhp
1300
5,63
1352
6.58
Table 16 -- Fan Performance -- 48PGF20 -- Horizontal Supply and Return Units
AVAILABLE
AIRFLOW
(Cfm)
0,2
5000
5500
Rpm
875
Bhp
2.74
952
3.38
6000
1029
3.74
6500
1106
4.67
F
Rpm
F
G
931
Bhp
3.04
1003
3.32
1077
4.15
1151
5.11
1226
6.23
7000
G
1184
5.75
7500
H
1262
7.00
1302
7.50
1341
8,41
1378
8,95
8000
EXTERNAL
0.4
H
F
G
H
STATIC PRESSURE
0.6
Rpm
984
Bhp
3.34
1053
3.70
1123
4.56
1194
5.56
1266
6.71
1340
8,01
F
G
H
(in. wg)
0.8
1.0
Rpm
1035
Bhp
3.33
1100
4.09
1167
4.98
1236
6,01
1306
7.19
1377
8.53
apm
F
G
H
1083
Bhp
3.69
1145
4.49
1210
5.41
1276
6.47
1344
7,68
8500
9000
AVAILABLE
AIRFLOW
(Cfm)
1.2
5000
F
Rpm
1130
5500
G
1189
4.90
1251
5.85
1315
6,94
1381
8.18
6000
6500
7000
H
EXTERNAL
1.4
Bhp
4.07
G
H
Rpm
1174
Bhp
4.45
1232
5.31
1292
6.29
1354
7,41
G
H
STATIC PRESSURE
1,6
Rpm
1218
Bhp
4.84
1273
5.72
1331
6.74
1391
7.89
7500
8000
8500
9000
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.
3O
(in. wg)
1.8
2.0
G
Rpm
1259
Bhp
5.23
H
1313
6.15
1369
7.19
G
Rpm
Bhp
1300
5.63
1352
6,58
Table 17 -- Fan Performance -- 48PGD24 -- Horizontal Supply and Return Units
AVAILABLE
AIRFLOW
(Cfm)
0,2
apm
937
Bhp
3.26
6,000
1013
3.58
6,500
1089
4,48
1166
5.52
1243
6.71
8,000
1320
8.07
8,500
1398
9,60
5,500
F
7,000
G
7,500
H
EXTERNAL
0,4
apm
F
G
H
STATIC PRESSURE
0.6
988
Bhp
3.56
1060
3.96
1105
4.35
1133
4,89
G
1175
5,31
1207
H
1247
1319
6.41
1282
5.96
7.18
1356
8.57
1392
9.08
F
Rpm
1036
Bhp
3.53
F
G
H
7,66
(in. wg)
0.8
1.0
Rpm
1083
Bhp
3.90
Rpm
1127
Bhp
4.28
1149
4.75
1216
5.73
1191
5.16
1256
1285
6.86
6,17
1323
1355
7.32
8,14
1391
8.63
Rpm
1292
Bhp
5.88
Rpm
1331
Bhp
1348
6,87
1384
7.31
G
H
9,000
9,500
10,000
AVAILABLE
AIRFLOW
(Cfm)
5,500
1,2
G
6,000
6,500
7,000
H
EXTERNAL
1.4
Rpm
1171
Bhp
4.67
Rpm
1212
5.06
1232
5.57
1271
6.00
1295
6.61
1333
7.06
1360
7,80
1396
8.27
G
H
STATIC PRESSURE
1,6
G
Rpm
1253
Bhp
5.47
H
1310
6.43
1369
7.52
Bhp
7,500
8,000
8,500
9,000
9,500
10,000
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
(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.
and 460-v), 873-1108
rpm, 5.75 bhp (575-v)
3!
H
(in, wg)
1,8
2.0
6.30
Table 18 -- Fan Performance -- 48PGE24 -- Horizontal Supply and Return Units
AVAILABLE
AIRFLOW
(Cfm)
Rpm
952
Bhp
3.38
6,000
1029
3.74
6,500
1106
4.67
5,500
F
7,000
G
1184
5.75
7,500
H
1262
7.00
1341
8,41
8,000
EXTERNAL
0.4
0,2
Rpm
F
G
H
1003
Bhp
3.32
1077
4.15
1151
5.11
1226
6.23
1302
7.50
1378
8,95
F
G
H
STATIC PRESSURE
0.6
Rpm
1053
Bhp
3.70
1123
4.56
1194
5.56
1266
1340
(in. wg)
0.8
1.0
F
Rpm
1100
Bhp
4,09
G
1167
4,96
1236
6,01
6.71
1306
7,19
8,01
1377
8.53
H
apm
G
H
1145
Bhp
4.49
1210
5.41
1276
6.47
1344
7.68
8,500
9,000
9,500
10,000
AVAILABLE
AIRFLOW
(Cfm)
1,2
Rpm
1189
Bhp
4.90
1251
5.85
6,500
1315
6.94
7,000
1381
8.18
5,500
6,000
G
H
EXTERNAL
1.4
STATIC PRESSURE
G
Rpm
1232
Bhp
5.31
1.8
H
1292
6.29
1354
7,41
1313
6.74
1369
7.19
7.89
--
Bhp
G
1273
5.72
H
1331
1391
8,0OO
8,500
9,0OO
9,500
10,000
LEGEND
--
Bmke HorsepowerlnputtoFan
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.
32
2.0
Bhp
6,15
Rpm
7,500
Bhp
(in. wg)
1.6
Rpm
H
Rpm
1352
Bhp
6,58
Table 19 -- Fan Performance -- 48PGF24 -- Horizontal Supply and Return Units
AVAILABLE
AIRFLOW
(Cfm)
Rpm
952
Bhp
3.38
6,000
1029
3.74
6,500
1106
4,67
5,500
F
7,000
G
1184
5.75
7,500
H
1262
7.00
1341
8,41
8,000
EXTERNAL
0,4
0,2
Rpm
F
G
H
1003
Bhp
3.32
1077
4.15
1151
5.11
1228
6.23
1302
7,50
1378
8.95
F
G
H
STATIC PRESSURE
0.6
Rpm
1053
Bhp
3.70
1123
4.56
1194
5.56
1266
1340
(in. wg)
1.0
0.8
Rpm
F
1100
Bhp
4.09
G
1167
4.98
1236
6.01
6.71
1306
7.19
8.01
1377
8.53
H
G
H
Rpm
1145
Bhp
4.49
1210
5.41
1276
6.47
1344
7.68
8,500
9,000
9,500
10,000
AVAILABLE
AIRFLOW
(Cfm)
5,500
1,2
G
Rpm
1189
Bhp
4.90
1251
5.85
6,500
1315
6.94
7,000
1381
8,18
6,000
H
EXTERNAL
1.4
STATIC PRESSURE
G
Rpm
1232
Bhp
5.31
1,8
H
1292
6.29
1354
7.41
G
Rpm
1273
5.72
H
1331
6.74
1391
7.89
8,000
8,500
9,000
9,500
10,000
LEGEND
--
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
(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.
and 460-v), 873-1108
rpm, 5.75 bhp (575-v)
33
Rpm
Bhp
7,500
Bhp
(in, wg)
1,6
H
1313
1369
2.0
Bhp
6.15
7,19
Rpm
1352
Bhp
6.58
Table 20 -- Fan Performance -- 48PGD28 -- Horizontal Supply and Return Units
AVAILABLE
AIRFLOW
(Cfm)
EXTERNAL
0.4
0,2
Rpm
788
Bhp
2.50
842
3.09
898
3.77
8,000
965
8,500
Rpm
STATIC PRESSURE
0.6
819
Bhp
2.70
871
3.30
925
3.99
4.55
979
4.77
1007
5.03
1012
5.42
1034
5.65
1059
5.92
1069
6.41
1090
6.65
1113
9,500
1127
7.51
1146
7.76
10,000
1184
8.74
1202
8.99
10,500
1242
10.09
1258
11,000
1299
11,58
11,500
1357
13.20
6,500
E
7,000
7,500
9,000
F
G
H
3.85
983
4.19
4.54
1026
4.88
1037
5.33
1070
5.67
1087
6.22
1117
6.56
6.92
1138
7.23
1165
7.57
1167
8.04
1190
8.35
1215
8.69
1221
9.28
1243
9.59
10.35
1276
10.64
1296
1315
11.85
1332
12.15
1350
1372
13.48
1388
13.79
--
F
G
N
F
G
H
905
3.55
955
4.24
1.0
F
G
N
Rpm
899
Bhp
3.25
943
989
apm
Bhp
3.59
E
Bhp
2.96
0.8
943
E
Rpm
857
(in. wg)
F
G
H
1266
9.93
10.96
1318
11,31
12.47
1370
12,82
Bhp
Rpm
12,000
12,500
AVAILABLE
AIRFLOW
(Cfm)
1,2
Rpm
988
Bhp
3.97
Rpm
1035
Bhp
4.39
7,000
1024
4.57
7,500
1063
5.25
1068
4.98
1102
5.66
8,000
1105
8.04
1140
8,500
1149
8.94
9,000
1194
7.94
9,500
1242
10,000
10,500
11,000
6,500
F
G
EXTERNAL
1.4
1.8
1109
5.43
1153
5.93
1141
8.11
1181
6.69
6.45
1176
6.89
1213
1181
7.34
1215
7.78
1225
8.35
1256
9,07
1270
9.47
1290
10.31
1316
1340
11.69
1364
1391
13,20
G
H
1177
Bhp
5.95
1197
6.48
1221
7.11
7.36
1250
7.87
1249
8.25
1283
8.74
8.79
1287
9.25
1319
9,74
1298
9.91
1328
10.37
1358
10.87
10.72
1343
11.16
1370
11.62
1399
12,11
12.10
1389
12.54
G
H
12,500
LEGEND
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.
34
G
H
Rpm
1129
2.0
Bhp
4.87
12,000
--
(in. wg)
Rpm
1082
11,500
Bhp
STATIC PRESSURE
1.6
5.39
H
Table 21 -- Fan Performance -- 48PGE28 -- Horizontal Supply and Return Units
AVAILABLE
AIRFLOW
(Cfm)
Rpm
799
Bhp
2.58
856
3.19
913
3.89
8,000
971
8,500
6,500
E
7,000
EXTERNAL
0,4
0,2
apm
E
887
(in. wg)
0.6
Bhp
2.79
833
STATIC PRESSURE
0.8
E
Rpm
872
Bhp
3.05
F
921
3.67
972
4.39
1024
5.20
1078
6.12
F
1.0
apm
Rpm
914
Bhp
3,36
958
3.98
1006
4,69
1055
5,51
G 1088
5.86
1106
6.44
1136
6.78
F
958
Bhp
3.71
999
4.33
1042
5.04
941
3.41
4.12
4.69
996
4.93
1029
5.60
1052
5,85
1087
6.62
1108
6,87
1132
7.16
1158
7.47
1185
7.82
9,500
1145
7.75
1165
1187
8.31
1211
8,63
10,000
1203
9.01
1222
8,02
9,29
1243
9,59
1265
9,92
H 1236
1288
10.28
10,500
1261
10.40
1279
10.69
1299
11.00
1319
11.34
1341
11,70
11,000
1320
11,93
1337
12.23
1355
12.55
1374
12.89
1394
13,26
11,500
1378
13.61
Rpm
1148
Bhp
5.60
Rpm
1195
1172
6.17
1217
6.74
1201
6.84
1242
7.40
7.63
1272
8.17
8.53
1304
9.06
7,500
9,000
F
G
H
F
G
H
G
H
G
H
8.99
12,000
12,500
AVAILABLE
AIRFLOW
(Cfm)
1,2
Bhp
4.12
Rpm
1052
Bhp
4.57
1041
4.72
1084
5.16
1080
5.43
1119
5.86
8,000
1122
6.24
1158
6.66
8,500
1167
7.16
1200
7.58
9,000
1214
8.21
1244
F
7,000
7,500
G
G
H
(in, wg)
1,8
2.0
Rpm
1100
Bhp
5.06
1128
1160
5.64
6,33
1195
7.13
1234
8.04
1233
1269
8.62
1275
9,07
1308
9.56
1340
10,08
1379
11,23
G
H
G
H
9,500
1262
9.37
1290
9.78
1319
10.23
1349
10.71
10,000
1312
10,66
1338
11,08
1365
11.52
1392
12.00
10,500
1363
12.09
1387
12,51
11,000
11,500
12,000
12,500
LEGEND
Bhp
STATIC PRESSURE
1,6
Rpm
1005
6,500
EXTERNAL
1.4
--
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.
35
H
Bhp
6.17
Table 22 -- Fan Performance -- 48PGF28 -- Horizontal Supply and Return Units
AVAILABLE
AIRFLOW
(Cfm)
6,500
E
Rpm
799
Bhp
2.58
E
Rpm
833
Bhp
2.79
687
3.41
941
4.12
856
3.19
7,500
913
3.89
971
4.69
996
4.93
1029
5.60
1052
5.85
1087
6.62
1108
6.87
1145
7.75
1165
8.02
1203
9.01
1222
9.29
10,500
1261
10.40
1279
11,600
1320
11,93
1337
11,500
1378
13,61
F
8,500
G
9,000
9,500
10,000
H
F
G
H
STATIC PRESSURE
(in. wg)
0.8
0.6
7,000
8,000
EXTERNAL
0.4
0,2
E
Rpm
872
Bhp
3,05
Bhp
3.36
958
3.98
921
3,67
972
4,39
1006
4.69
1024
5,20
1055
5.51
1076
1132
6,12
7,16
1106
1158
1187
1243
8,31
1211
8.63
1265
10.69
1299
11.00
12.23
1355
12.55
F
G
H
F
1.0
Rpm
914
G
F
Rpm
958
Bhp
3.71
999
4.33
1042
5.04
1068
5.86
6.44
1136
6.78
7.47
1185
7.82
G
1236
8.99
9.92
1268
10.28
1319
11.34
1341
11.70
1374
12.89
1394
13.26
Rpm
1148
Bhp
5.80
Rpm
1195
Bhp
6.17
1172
6.17
1217
6.74
1201
6.84
1242
7.40
1233
1269
7.63
1272
8.17
8.53
1304
9.06
9.07
1306
9,56
1340
10.08
1379
11.23
9,59
H
H
12,000
12,500
AVAILABLE
AIRFLOW
(Cfm)
1.2
Rpm
1005
Bhp
4.12
7,000
1041
4.72
7,500
1080
5.43
8,000
1122
8,500
F
6,500
G
9,000
H
EXTERNAL
1.4
Rpm
1052
Bhp
4.57
1084
5.16
1119
6.24
1167
1214
STATIC PRESSURE
1.6
Rpm
1100
Bhp
5.06
1128
5.64
5.86
1160
6.33
1156
6.66
1195
7.16
1200
7.58
8.21
1244
8.62
1234
1275
7.13
8.04
G
G
H
G
H
(in. wg)
1.8
2.0
9,500
1262
9.37
1290
9.78
1319
10.23
1349
10.71
10,000
1312
10.66
1338
11.08
1365
11.52
1392
12.00
10,500
1363
12,09
1387
12.51
H
11,000
11,500
12,000
12,500
LEGEND
Bhp
--
B_ke
HorsepowerlnputtoFan
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
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.
DATA TABLES
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 representative for details.
6. Use the following formula to calculate Input Watts:
Input Watts = Bhp x (746/motor effl)
36
Table 23 -- Power Exhaust Fan Performance -- 48PG20-28
LOW SPEED
AIRFLOW
(Cfm)
3250
3350
3450
3550
3650
3750
3850
3950
4050
4250
4450
4650
4850
5050
5250
5450
5650
5850
208 V
Bhp
1.41
1.44
1.46
1.47
1.49
ESP
0.32
0.23
0.17
0.13
0.09
-------
Watts
1580
1610
1635
1645
1665
-----
MEDIUM SPEED
230,460,575V
ESP
Bhp
Watts
0.70
1.49
1670
0.63
1.52
1700
0.59
1.55
1730
0.56
1.56
1745
0.53
1.58
1765
0.51
1.60
1790
0.48
1.62
1810
0.45
1.64
1835
0.40
1.67
1865
-------
ESP
208 V
Bhp
Watts
0.60
0.55
0.49
0.43
0.39
0.33
0.27
0.22
0.17
0.00
----
1.51
1.54
1.56
1.59
1.62
1.64
1.66
1.68
1.74
1.79
----
1690
1720
1750
1780
1815
1835
1860
1885
1945
2005
----
HIGH SPEED
230,460,575V
ESP
Bhp
Watts
0.82
0.78
0.73
0.68
0.64
0.59
0.54
0.49
0.40
0.30
0.22
0.16
0.12
1.62
1.64
1.67
1.70
1.72
1.74
1.76
1.79
1.84
1.89
1.94
1.98
2.02
1810
1840
1870
1900
1930
1950
1975
2000
2060
2115
2170
2215
2260
ESP
208 V
Bhp
Watts
0.60
0.56
0.51
0.41
0.31
0.20
0.11
0.04
-----
1,85
1,87
1.89
1.92
1.97
2.04
2.09
2.13
-----
2070
2095
2120
2145
2205
2280
2335
2385
-----
230,460,575V
ESP
Bhp
Wa_s
0.73
0.69
0.65
0.56
0.47
0.37
0.30
0.23
0.17
0.12
0.07
0.04
1.99
2.01
2.04
2.06
2.12
2.19
2.24
2.28
2.33
2.38
2.40
2.42
2230
2255
2280
2310
2370
2450
2505
2555
2610
2665
2690
2710
LEGEND
ESP--External
Static Pressure
Table 24 -- Operation
COOLING
48PG
Minimum Cfm
GAS HEAT
Maximum
20
5000
9,000
24
5500
10,000
28
6500
12,000
*7000 cfm minimum
recommended
Cfm
High Heat (8 Cell)
Medium Heat (8 Cell)
Low Heat (5 Cell)
High Heat (8 Cell)
Medium Heat (8 Cell)
Low Heat (5 Cell)
High Heat (8 Cell)
Medium Heat (8 Cell)
Low Heat (5 Cell)
Air Quantity Limits
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
above 1.0 in. wg external static pressure.
Table 25 -- Evaporator Fan Motor Specifications
48PG
ORIENTATION
Low
Vertical
Mid-Low
Vertical
Mid-High
Vertical
High
Vertical
Low
Horizontal
Mid-Low
Horizontal
Mid-High
Horizontal
High
Horizontal
20
MOTOR P/N
HD60FK651
HD60 FK651
HD60 FK651
HD60FK575
HD60FK653
HD60FK653
HD60FK653
HD60FK575
HD62FK652
HD62FK652
HD62FK652
HD62FK576
HD64FK651
HD64FK651
HD64 FK651
HD64FK575
N/A
N/A
N/A
N/A
HD60FK651
HD60FK651
HD60 FK651
HD60FK575
HD60FK653
HD60FK653
HD60FK653
HD60FK575
HD62FK652
HD62FK652
HD62FK652
HD62FK576
NOMINAL
3.7
3.7
3.7
5
5
5
5
5
7.5
7.5
7.5
7.5
10
10
10
10
N/A
N/A
N/A
N/A
3.7
3.7
3.7
5
5
5
5
5
7.5
7.5
7.5
7.5
HP
VOLTAGE
208
230
460
575
208
230
460
575
208
230
460
575
208
230
460
575
208
230
460
575
208
230
460
575
208
230
460
575
208
230
460
575
37
MAX WATTS
3698
3698
3698
4900
4900
4900
4900
4900
7267
7267
7267
7267
9582
9582
9582
9582
N/A
N/A
N/A
N/A
3698
3698
3698
4900
4900
4900
4900
4900
7267
7267
7267
7267
EFFICIENCY
85.8
85.8
85.8
87.5
87.5
87.5
87.5
87.5
88.5
88.5
88.5
88.5
89.5
89.5
89.5
89.5
N/A
N/A
N/A
N/A
85.8
85.8
85.8
87.5
87.5
87.5
87.5
87.5
88.5
88.5
88.5
88.5
%
MAX BHP
4.25
4.25
4.25
5.75
5.75
5.75
5.75
5.75
8.63
8.63
8.63
8.63
11.5
11.5
11.5
11.5
N/A
N/A
N/A
N/A
4.25
4.25
4.25
5.75
5.75
5.75
5.75
5.75
8.63
8.63
8.63
8.63
MAX BkW
3.17
3.17
3.17
4.29
4.29
4.29
4.29
4.29
6.43
6.43
6.43
6.43
8.58
8.58
8.58
8.58
N/A
N/A
N/A
N/A
3.17
3.17
3.17
4.29
4.29
4.29
4.29
4.29
6.43
6.43
6.43
6.43
MAX AMPS
10.6
9.6
4.8
6.1
16.7
15.2
7.6
6.1
24.2
22
11
9
30.8
28
14
11
N/A
N/A
N/A
N/A
10.6
9.6
4.8
6.1
16.7
15.2
7.6
6.1
24.2
22
11
9
Table 25 -- Evaporator Fan Motor Specifications
48PG
ORIENTATION
Low
Vertical
Mid-Low
Vertical
Mid-High
Vertical
High
Vertical
Low
Horizontal
Mid-Low
Horizontal
Mid-High
Horizontal
High
Horizontal
Low
Vertical
Mid-Low
Vertical
Mid-High
Vertical
High
Vertical
Low
Horizontal
Mid-Low
Horizontal
Mid-High
Horizontal
High
Horizontal
24
28
MOTOR P/N
HD6OFK651
HD60FK651
HD60FK651
HD60FK575
HD60FK653
HD60FK653
HD60FK653
HD60FK575
HD62FK652
HD62FK652
HD62FK652
HD62FK576
HD64FK651
HD64FK651
HD64FK651
HD64FK578
N/A
N/A
N/A
N/A
HD60FK651
HD60FK651
HD60FK651
HD60FK575
HD60FK653
HD60FK653
HD60FK653
HD60FK575
HD62FK652
HD62FK652
HD62FK652
HD62FK576
HD60FK653
HD60FK653
HD60FK653
HD60FK575
HD60FK653
HD60FK653
HD60FK653
HD60FK575
HD62FK652
HD62FK652
HD62FK652
HD62FK576
HD64FK651
HD64FK651
HD64FK651
HD64FK575
HD60FK653
HD60FK653
HD60FK653
HD60FK575
HD60FK653
HD60FK653
HD60FK653
HD60FK575
HD62FK652
HD62FK652
HD62FK652
HD62FK576
HD64FK651
HD64FK651
HD64FK651
HD64FK575
NOMINAL
3.7
3.7
3.7
5
5
5
5
5
7.5
7.5
7.5
7.5
10
10
10
10
N/A
N/A
N/A
N/A
3.7
3.7
3.7
5
5
5
5
5
7.5
7.5
7.5
7.5
5
5
5
5
5
5
5
5
7.5
7.5
7.5
7.5
10
10
10
10
5
5
5
5
5
5
5
5
7.5
7.5
7.5
7.5
10
10
10
10
HP
VOLTAGE
208
230
460
575
208
230
460
575
208
230
460
575
208
230
460
578
208
230
460
575
208
230
460
575
208
230
460
875
208
230
460
578
208
230
460
575
208
230
460
875
208
230
460
578
208
230
460
575
208
230
460
575
208
230
460
875
208
230
460
578
208
230
460
575
NOTES:
1. Extensive motor and electrical testing ensures that the motors can be utilized 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 nuisance tripping or premature motor failure. Unit warranty will not be affected.
MAX WATTS
3698
3698
3698
4900
4900
4900
4900
4900
7267
7267
7267
7267
9582
9582
9582
9582
N/A
N/A
N/A
N/A
3698
3698
3698
4900
4900
4900
4900
4900
7267
7267
7267
7267
4900
4900
4900
4900
4900
4900
4900
4900
7267
7267
7267
7267
9582
9582
9582
9582
4900
4900
4900
4900
4900
4900
4900
4900
7267
7267
7267
7267
9582
9582
9582
9582
(cont)
EFFICIENCY
85.8
85.8
85.8
87.5
87.8
87.5
87.5
87.5
88.5
88.8
88.5
88.5
89.5
89.5
89.8
89.8
N/A
N/A
N/A
N/A
85.8
85.8
85.8
87.5
87.5
87.8
87.5
87.5
88.5
88.5
88.8
88.8
87.5
87.5
87.5
87.5
87.8
87.8
87.8
87.5
88.5
88.5
88.5
88.8
89.5
89.5
89.5
89.5
87.8
87.5
87.5
87.5
87.5
87.8
87.8
87.5
88.5
88.5
88.5
88.8
89.5
89.5
89.5
89.5
%
MAX BHP
4.25
4.28
4.28
5.75
5.75
5.75
5.75
5.75
8.63
8.63
8.63
8.63
11.5
11.5
11.5
11.5
N/A
N/A
N/A
N/A
4.28
4.25
4.28
5.75
5.75
5.75
5.75
5.75
8.63
8.63
8.63
8.63
5.75
5.75
5.75
5.75
5.75
5.75
5.75
5.75
8.63
8.63
8.63
8.63
11.5
11.5
11.5
11.5
5.75
5.75
5.75
5.75
5.75
5.75
5.75
5.75
8.63
8.63
8.63
8.63
11.5
11.5
11.5
11.5
MAX BkW
3.17
3.17
3.17
4.29
4.29
4.29
4.29
4.29
6.43
6.43
6.43
6.43
8.58
8.58
8.58
8.58
N/A
N/A
N/A
N/A
3.17
3.17
3.17
4.29
4.29
4.29
4.29
4.29
6.43
6.43
6.43
6.43
4.29
4.29
4.29
4.29
4.29
4.29
4.29
4.29
6.43
6.43
6.43
6.43
8.58
8.58
8.58
8.58
4.29
4.29
4.29
4.29
4.29
4.29
4.29
4.29
6.43
6.43
6.43
6.43
8.58
8.58
8.58
8.58
MAX AMPS
10.6
9.6
4.8
6.1
16.7
15.2
7.6
6.1
24.2
22
11
9
30.8
28
14
11
N/A
N/A
N/A
N/A
10.6
9.6
4.8
6.1
16.7
15.2
7.6
6.1
24.2
22
11
9
16.7
15.2
7.6
6.1
16.7
15.2
7.6
6.1
24.2
22
11
9
30.8
28
14
11
16.7
15.2
7.6
6.1
16.7
15.2
7.6
6.1
24.2
22
11
9
30.8
28
14
11
2. All indoor-fan motors 5 hp and larger meet the minimum efficiency requirements as established by the Energy Policy Act of 1992 (EPACT) effective
October 24, 1997.
38
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
COMPONENT
Economizer
8,500
0.11
9,000
0.12
9,500
0.13
10,000
0.15
10,500
0.16
11,000
0.17
11,500
0.19
12,000
0.20
CFM
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 determine blower rpm and watts.
Table 27
UNIT
48PG
MOTOR PULLEY TURNS OPEN
DRIVE
0
1/2
1
11/2
2
21/2
3
31/2
4
41/2
5
51/2
6
685
706
727
749
770
791
812
833
854
876
897
918
939
Mid-Low
949
970
992
1013
1035
1056
1078
1099
1120
1142
1163
1185
1206
Mid-High
941
961
980
1000
1019
1039
1059
1078
1098
1117
1137
1156
1176
High
1014
1038
1061
1085
1108
1132
1156
1179
1203
1226
1250
1273
1297
Low
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
Mid-Low
896
924
951
979
1006
1034
1062
1089
1117
1144
1172
1199
1227
Mid-High
Low
20 and 24
(230 and 460 volt)
1113
1138
1163
1188
1213
1238
1264
1289
1314
1339
1364
1389
1414
High
1096
1116
1137
1157
1177
1197
1218
1238
1258
1278
1299
1319
1339
Low
751
768
785
802
819
836
853
869
886
903
920
937
954
949
970
992
1013
1035
1056
1078
1099
1120
1142
1163
1185
1206
Mid-Low
941
961
980
1000
1019
1039
1059
1078
1098
1117
1137
1156
1176
High
1014
1038
1061
1085
1108
1132
1156
1179
1203
1226
1250
1273
1297
Low
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
Mid-Low
873
893
912
932
951
971
991
1010
1030
1049
1069
1088
1108
Mid-High
Mid-High
20 and 24
(575 volt)
1113
1138
1163
1188
1213
1238
1264
1289
1314
1339
1364
1389
1414
High
1096
1116
1137
1157
1177
1197
1218
1238
1258
1278
1299
1319
1339
Low
687
703
718
734
749
765
780
796
811
827
842
858
873
805
822
839
856
872
889
906
923
940
957
973
990
1007
Mid-Low
941
961
980
1000
1019
1039
1059
1078
1098
1117
1137
1156
1176
High
1014
1038
1061
1085
1108
1132
1156
1179
1203
1226
1250
1273
1297
Low
687
703
718
734
749
765
780
796
811
827
842
858
873
805
822
839
856
872
889
906
923
940
957
973
990
1007
Mid-High
28
(all voltages)
Fan Rpm at Motor Pulley Settings*
Mid-Low
Mid-High
High
941
961
980
1000
1019
1039
1059
1078
1098
1117
1137
1156
1176
1014
1038
1061
1085
1108
1132
1156
1179
1203
1226
1250
1273
1297
LEGEND
rda --
*Approximate
not available
NOTE:
Factory
fan rpm shown.
pulley speed setting
is at 3 turns
open.
ECONOMISER
IV CONTROLLER
WIRING AND OPERATIONAL 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.
Optional
EconoMiSer IV -- See Fig. 23 for EconoMi$er
IV component locations. The optional EconoMi$er IV comes
from the facto U fiJlly 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
Outdoor D U Bulb Changeover
-- The standard controller is
shipped from the facto q configured for outdoor dry bulb
changeover control. The outdoor _firand mixed-tfir temperature
sensors tue included as stand_u'd. For this control mode, the outdoor temperature is compared to an adjustable set point selected
on the control. If the outdoor-air temperature is above the set
point, the EconoMi$er IV will adjust the outdoor-air dampers to
minimum position. If the outdoor-air temperature is below the
set point, the position of the outdoor-air &unpeLs will be controlled to provided free cooling using outdoor all: When in this
mode, the LED next to the free cooling set point potenfiometer
will be on. The changeover temperature set point is controlled
by the free cooling set point potentiometer located on the control. The sc_fle on the potentiometer is A, B, C, and D. See
Fig. 25 for the corresponding temperature changeover values.
Mixed-Air Temperature
(MAT) Sensor
-- The mixed-air
temperature sensor is a 3 K thermistor located at the outlet of
the indoor fan. See Fig. 24. This sensor is facto U installed. The
operating range of temperature measurement is 0 ° to 158 E
The temperature sensor is a short probe with blue wires
running to it.
Outdoor Air Lockout Sensor
-- The Economi$er
IV is
equipped with an ambient temperature lockout switch located
in the outdoor airstream which is used to lock out the compressors below a 42 F ambient temperature.
39
DAMPER
ASSEMBLY
WIRE
HARNESS
DAMPER
ACTUATOR
ECONOMIZER
BLOCK OFF
Fig. 23 -- EconoMiSer IV Component
Locations (Exploded
View)
19.
18-
'''%
LEDON
1716- --
- LED O FF
15<
E14-
LED ON
LED OFF -
13121110-
40
45
50
55
60
65
DEGREES
Fig. 24 -- Sensor Locations (OAT and MAT)
70
75
80
FAHRENHEIT
Fig. 25 -- Temperature Changeover Set Points
Table 28 -- EconoMi$er IV Sensor Usage
APPLICATION
ECONOMI$ER
IV WITH OUTDOOR
DRY BULB SENSOR
Accessories
Outdoor
Air Dry Bulb
Differential
Single
Differential
None. The outdoor
Accessories
is factory
installed.
Enthalpy
CO2 for DCV Control using a
Wall-Mounted
CO2 Sensor
enthalpy
sensor
CRENTDIF004A00
_
is factory
installed.
_
_
33ZCSENCO2
and
33ZCSENCO2t
33ZCASPCO2**
_
(2) CRTEMPSN002A00
None. The single
HH57AC078
and
CRENTDIF004A00
Required
CRTEMPSN002A00
_
HH57AC078
Enthalpy
CO2 for DCV Control using a
Duct-Mounted
002 Sensor
ECONOMI$ER
IV WITH SINGLE
ENTHALPY
SENSOR
Required
air dry bulb sensor
CRTEMPSN002A00
Dry Bulb
AIR
33ZCSENCO2
CRCBDIOX005A00tt
and
33ZCSENCO2t
33ZCASPCO2**
-CRENTDIF004A00
and CRTEMPSN002A00
accessories
are used on many different base units. As such,
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.
40
these
CRCBDIOX005A00tt
kits may contain
parts that will not be
Differential Dry Bulb Control -- For differentM
c_h-ybulb
control tile stan_u_d outdoor dry bulb sensor is used in conjunction with an addition',fi accesso U &-y bulb sensor (part number
CRTEMPSN002A00).
Tile accesso U sensor 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 temperature 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, accessory enthalpy sensor (pa-t number HH57AC078)
is required.
Replace the standm_d outdoor c_h-ybulb temperatule sensor with
the accesso U enthalpy 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 minimum 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 controllel: 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 U enthalpy sensor in the same mounting 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 modified 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 dampers to open. This delay allows the damper to leach the appropriate position to avoid unnecessa-y fan overload.
Fig. 26 -- EconoMiSer IV Wiring
41
CONTROL
CONTROL
85
90
95
100
105
110
(29)
(32)
(35)
(38)
(41)
(43)
POINT
CURVE
APPROX. °F (°C)
AT 50% RH
A
73 (23)
B
C
70 (21)
67(19)
D
63(17)
-\
7-.
\\
7z
/
\
_4
\
\
X
-\
HIGH
35
40
45
50
55
60
65
70
75
80
85
90
95
100
\
105
(2)
(4)
(7)
(10)
(13)
(16)
(18)
(21)
(24)
(27)
(29)
(32)
(35)
(38)
(41)
APPROXIMATE
DRY
BULB
TEMPERATURE
i
o
LIMIT
CURVE
110
(43)
o
F (C)
Fig. 27 -- Enthalpy Changeover
Set Points
CO2
EXHAUST
FAN SET POINT
SENSOR
MAX
RANGE
SEqq-ING
6000
LED LIGHTS
WHEN EXHAUST
CONTACT IS MADE
MINIMUM
POSITION
5000
DAMPER
SETTING
z
4000
MAXIMUM DAMPER
DEMAND CONTROL
VENTILATION
SET POINT
DEMAND
+6oopp_
I
E
Z
LED LIGHTS WHEN
DEMAND CONTROL
VENTILATION
INPUT
IS ABOVE SET POINT
VENTILATION
_
3000
_1000
ppm
_1100
ppm
2000
w
Z
<
CONTROL
1000
SET POINT
0
LED LIGHTS WHEN
OUTDOOR AIR IS
2
FREE
COOLING
SUITABLE
FOR
CHANGEOVER
3
4
5
6
7
DAMPER VOLTAGE FOR MAX VENTILATION
ENTHALPY
SET POINT
Fig. 28 -- EconoMi$er IV Controller
and LED Locations
8
RATE
Fig. 29 -- CO2 Sensor Maximum Range Setting
Potentiometer
42
I
Minimum Position Control -- There is a minimum &tmper
position potentiometer on the EconoMiSer IV controllel: See
Fig. 28. The minimum dmnper position maintains the minimum 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 occupied ventilation.
When demand ventilation control is not being used, the
minimum position potentimeter should be used to set the occupied 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
following formula:
(To x OA) + (TR x RA) = TM
To = Outdoor-Air Temperature
OA = Percent of Outdoor Air
Demand Control Ventilation
-- When using the EconoMiSer IV for demand control ventilation, there are some equipment 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 normid 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 proportionalanticipatory
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 ventilation and should mainttfin the set point.
using the
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 unoccupied 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.
TR = Return-Air Temperature
RA = Percent of Return Air
TM = Mixed-Air Temperature
2.
3.
4.
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
Disconnect the mixed air sensor from termimfls T and TI.
Ensure that
terminals P
used, make
Fig. 26 and
turned liflly
Connect 24
(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
the factory-installed jumper is in place across
and PI. If remote &tmper positioning is being
sure that the terminals are wired according to
that file minimum position potentiometer
is
clockwise.
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
TM = Mixed-Air Temperature
Once base ventilation has been determined, set the minimum &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 concentration 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
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 remote 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 potentiometer to the P and PI termimds on file EconoMiSer IV controllel:
See Fig. 26.
Damper Movement -- When the EconoMiSer 1V board receives 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 seconds to initiate. Damper movement
from full open to full
closed (or vice velsa) takes 21/2 minutes.
Thermostats
-- The EconoMiSer IV control works with conventional 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 tilermostat terminal connection board located in the main control
box.
Once tile fully occupied damper position has been determined, 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.
43
Press Mode twice. The STDSET
Menu will appem:
3. UsetheUp/Down
button
toselect
thepreset
numbel:
See
Table
29.
4. Press
Entertolockinfileselection.
5. Press
Modetoexitandresume
normal
operation.
Thecustom
settings
oftheCO2sensor
canbechanged
anytimeafterthesensor
is energized.
Followthesteps
belowto
change
thenon-standard
settings:
1. Press
CletuandModebuttons.
Holdatleast5 seconds
untilthesensor
enters
theEditmode.
2. Press
Modetwice.TheSTDSET
Menuwillappeal:
3. UsetheUp/Down
button
totoggle
totheNONSTD
menu
andpress
Enter.
4. UsetheUp/Down
buttontotogglethrough
eachofthe
ninevmiables,
starting
withAltitude,untilfiledesired
setting
isreached.
5. Press
Modetomove
through
thevmiables.
6. Press
Entertolockin theselection,
thenpress
Modeto
continue
tothenextvariable.
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
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
Dehumidification
of Fresh Air with DCV Control -- Information from ASHRAE
(American
Society
of Heating,
Refrigeration, and Air Conditioning Engineers) indicates that
the largest humidity load on tiny zone is the fresh air introduced. 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.
HEATING.
29
--
002
VENTILATION
RATE
(cfm/Pereon)
Proportional
Any
Proportional
Any
3
Exponential
Any
4
Proportional
15
Proportional
20
6
Exponential
15
7
Exponential
20
EQUIPMENT
1
2
Interface w/Standard
Building Control System
5
Economizer
8
Health & Safety
Proportional
9
Parking/Air Intakes/
Loading Docks
Proportional
WITHOUT
ECONOMIZER
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 normifl 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.
Sensor
OUTPUT
SETTING
UNITS
NOTE: The 48PG20-28
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 _flso be done to determine
the mixed-air temperature of the return and pre-conditioned
Table
Sequence
COOLING.
UNITS WITHOUT
ECONOMIZER
-- When
the thermostat calls for one stage of cooling, YI and G are energized. The indoor-fan contactor (IF(;_) and compressor contactor(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 setting) are energized and the indoor-fan motor, compressor(s)
(AI and BI on three compressor units or AI only on twocompressor 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.
Standard
ANALOG
OUTPUT
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
LEGEND
PPM -- Parts Per Million
44
Settings
CO2
CONTROLRANGE
(ppm)
OPTIONAL
RELAY SETPOINT
(ppm)
RELAY
HYSTERESIS
(ppm)
0-2000
1000
5O
0-2000
1000
5O
0-2000
1100
5O
0-1100
1100
5O
0- 900
900
5O
0-1100
1100
5O
0- 900
900
5O
0-9999
5000
5O0
0-2000
700
5O
When ignition occurs the IGC board will continue to monitor 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.
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 seconds 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 appropriate 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 temperature 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 Economizer section. The IFM is energized and the EconoMi$er
IV
damper modulates to the minimum position. When the thermostat is satisfied and Wl and W2 are deenergized,
the IFM
continues to ran, and the economizer damper modulates to the
minimum position.
SUBCOOLER
HEAT EXCHANGER
(SHX) -- The purpose
of the subcooler heat exchanger (SHX) and the subcooler TXV
is to increase the capacity of the evaporator
by sending
subcooled liquid refrigerant into the evaporatol: Normally, the
condenser subcools the liquid refrigerant by approximately
10 F. The SHX adds another 10 F to 15 F degrees of subcooling
before the refrigerant reaches the evaporator This allows the
refrigerant to absorb more heat from the mixed ail. thereby
providing more cooling capacity.
A LED indicator is provided on the IGC to monitor operation. The IGC is located by removing the side panel and viewing the IGC through the view port located in the control box
access panel. During normal operation, the LED is continuously on. For information on tmubleshoofing refer to page 57.
COOLING. UNITS WITH ECONOMI$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.
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 temperature 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 refrigerant continues its normal path to the main TXV and the
evaporator See Fig. 30.
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
COMPRESSOR
If optional power exhaust is installed, as the outdoor-air
damper opens and closes, the power exhaust fans will be energized and deenergized.
y
If field-installed accesso U CO2 sensors are connected to the
EconoMiSer IV control, a demand controlled ventilation strategy 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.
SUBCOOLER
HX
SUBCOOLERTXV
MAIN_
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.
Fig. 30 -- Subcooler
45
Operation
SERVICE
This will make cleaning efforts morn difficult. Surface loaded
fibeL's must be completely removed prior to using low velocity
clean water rinse.
Before
performing
service
or maintenance
unit, turn off main power
switch to unit.
could cause personal
injury.
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.
operations
on
Electrical
shock
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 durability in the environment.
Avoid the use of:
• coil brighteners
• acid cleaning prior to painting
• high pressure washers
• poor quality water for cleaning
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,
or maintenance ctm cause property
injury, or loss of life. Refer to the
Manual provided with this unit for
_flteration, service,
dmnage, peLsonal
User's Information
more details.
2.
Do not store or use gasoline or other flmnmable
vapors and liquids in the vicinity of this or any other
appliance.
Tot_fline environmentally
sound coil cleaner is non-flmnmable, hypoallergenic, nonbacteri_fl, and a USDA accepted biodegra&tble agent that will not harm the coil or surrounding components such as electric_fl wiring, painted met_fl surfaces, or insulation. Use of non-recommended
coil cleaneLs is strongly
discouraged since coil and unit durability could be affected.
What to do if you smell gas:
1. DO NOT try to light any appliance.
2.
DO NOT touch any electrical
phone in your building.
switch,
or use any
3.
IMMEDIATELY
call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions.
4.
If you cannot reach your gas supplier,
department.
Totaline Environmentally
Sound Coil (;leaner
Equipment
• 21/2 gallon garden sprayer
• water rinse with low velocity spray nozzle
call the fire
Application
Harsh chemicals, household bleach or acid or basic cleaneLs 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 interface where dissimilar materi_fls are in contact. If there is
dirt below the surface of the coil, use the Totaline environmentally sound coil cleaner as described above.
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 heating and cooling season and as operating conditions require. Remove unit top panel and/or side panels for access to unit interiol:
COIL MAINTENANCE
AND CLEANING
RECOMMENDATION -- Routine cleaning of coil surfaces is essential to
maint_fin proper operation of the unit. Elimination of contamination 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.
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 recommended 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 temperature is 100 E
NOTE: Do NOT USE water in excess of 130 IF.as the enzymatic activity will be destroyed.
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 direction of the Sins. Coil surfaces c_m be easily damaged (fin edges
can be easily bent over and damage to the coating of a protected 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.
46
5. Thoroughly
applyTot_dine®
environmentally
sound
coil
cleaner
solution
toallcoilsurfaces
including
finnedtuea,
tubesheets
andcoilheaders.
6. Holdgmden
sprayer
nozzle
close
tofinnedareas
andapplycleaner
witha vertical,
up-and-down
motion.
Avoid
spraying
in horizontal
pattern
tominimize
potenti_d
for
findamage.
7. Ensure
cleaner
thoroughly
penetrates
deepintofinned
areas.
8. Interiorandexterior
finnedareasmustbethoroughly
cleaned.
9. Finned
surfaces
should
remain
wetwithcleaning
solution
for10minutes.
10. Ensure
surfaces
arenotallowed
todinbefore
rinsing.
Reapplying
cleaner
asneeded
to ensure
10-minute
saturationisachieved.
11.Thoroughly
rinseallsurfaces
withlowvelocity
clean
waterusingdownward
rinsing
motion
ofwaterspray
nozzle.
Protect
finsfl'om&image
fromthespray
nozzle.
CONDENSATE
DRAIN-- Check
andcleaneach
yearatthe
startofthecooling
season.
Inwintel;keep
diains
andtraps
diN.
Anaccess
panelislocated
above
thecondensate
connection
to
alloweasycleanoutofthecondensate
pan.Thefirsttimethe
panelisremoved,
theinsulation
behind
theaccess
panelwill
need
tobecutaway.
Carefully
cuttheinsulation
withaknifeor
blade
onthreesides
sotheinsulation
canbefoldedoutofthe
wayduring
cleaning.
Becareful
notto &image components behind 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 cooling 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.
Use c_mtion with ceramic heat exchanger baffles. When installing retaining clip, be sure the center leg of the clip extends
inw_ud toward baffle. See Fig. 32.
COMBUSTION-AIR
BLOWER -- Clean periodically to assure 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 determine 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 holding 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
i Each compressor
correct amount of oil at the factory.
is charged
with the
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 compressor replacement, repairing refrigerant leaks, and replacing
refrigerant components. To prepare rooftop:
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 Burners 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.
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.
3.
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.
Place terrycloth shop towel inside the unit directly under
components to be serviced to prevent spills through the
bottom of the unit.
4.
5.
Perform the lequired service.
Remove and dispose of tiny oil contaminated
local codes.
material per
CERAMIC
BAFFLE
COMBUSTION
FAN HOUSING
HEAT
EXCHANGER
SECTION
IGC BOARD
(HIDDEN)
INDUCED
DRAFT
MOTOR
-
CLIP __
MAIN GAS
VALVE
/
1:
MAIN
BURNER
SECTION
IGC --
NOTE: One baffle and clip will be in each upper tube of the heat
exchanger.
Integrated Gas
Controller
Fig. 32
Fig. 31 -- Typical Gas Heating Section
47
1
Removing Heat Exchanger Ceramic
Baffles and Clips
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.
FAN SHAFT BEARINGS
-- Lubricate beatings at least evely 6 months with suitable betuing grease. Typical lubricants
ale given below:
LUBRICANT
Texaco
Mobil
Surloco
MANUFACTURER
Texaco
I
Regal AFB-2*
Mobilplex EP No, 1
Prestige 42
Multifak 2
Evaporator Fan Belt Tension Adjustment
-- To
adjust belt tension:
1. Turn offunit powel:
2. Slide out fan deck to service position as shown in Evaporator Fan Service and Replacement section above.
3. Loosen fan motor bolts.
4. Move motor mounting plate to adjust to proper belt tension. 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.
*Preferred lubricant because it contains rust and oxidation inhibitors.
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 -- Inst;dl Outdoor Air Hood section on page 12.
Economizer Adjustment -- If economizer adjustment
is requiled,
page 39.
Evaporator
refer to Optional
EconoMiSer
IV
section
Fan Service and Replacement
on
-- The
48PG units feature a slide-out fan deck for easy servicing of the
indoor-fan motol: pulleys, belt, and bearings. To service components 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.
MOTOR
FAN
PULLEY
_ PULLEY
(HIDDEN)
MOTOR
MOUNTING
÷ BASE
LIMIT
SWITCH
CONNECT
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.
6.
7.
8.
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.
Re-attach electrical plugs and wires.
Close fan section access door.
9.
Restore power to unit.
SLIDE-OUT
FAN DECK
Fig. 33 -- Evaporator-Fan
STRAIGHTEDGE
Motor Adjustment
MUST
WITH BELT
PULLEY
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.
4.
5.
6.
7.
MOVABLE
FLANGES
PULLEY
Ix_osen movable-pulley
flange setscrew (see Fig. 34).
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.
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.)
Replace and tighten belts (see Evaporator Fan Belt Tension Adjustment section below).
Restore power to unit.
MOTOR AND FAN
SHAFTS MUST BE
PARALLEL
SETSCREWS
FIXED FLANGES
SINGLE-GROOVE
Fig. 34--
48
Evaporator-Fan Alignment
and Adjustment
Table 30 -- Belt Tension Adjustment
48PG
20
24
28
230
B,K
5.1
C,L
5.6
D,M
4.5
E,N
NA
F,P
4.7
G,Q
5.0
H,R
5.5
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
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
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
Adjustment
Evacuation -- Proper evacuation of the system will re-
(Fig. 35)
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
Shut off unit power supply.
2. Remove condenser-fan assembly (grille, motol: motor
3.
4.
10
A,J
4.8
Condenser-Fan
I.
BELT TENSION
(Ib)
Unit Model Number Position
VOLTAGE
covek and fan) and loosen fan hub setscrews.
Adjust fan height as shown in Fig. 35.
Tighten setscrews and replace condenser-fan assembly.
5. Turn on power to unit.
Fig. 35 -- Condenser-Fan
Verify Sensor
Performance
and a thermometer,
compme
resistance shown in Table 31.
Adjustment
-- Using an ohmmeter
measured
temperature
Table 31 -- Sensor Temperature/Resistance
TEMPERATURE
-58
(F)
DEEP VACUUM METHOD-The deep vacuum method
requires a vacuum pump capable of pulling a minimum vacuum 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 U and system does not contain 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, dq nitrogen 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:
to the
Values
RESISTANCE
(ohms)
200,250
-40
100,680
-22
-4
53,010
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
158
746
525
176
376
185
321
194
212
274
203
230
153
248
116
257
266
102
89
284
70
302
55
LEAK IN
09
Z
O
rr
Q)
VACUUM TIGHT
TOO WET
TIGHT
DRY SYSTEM
O
2
3
4
5
6
MINUTES
Fig. 36 -- Deep Vacuum Graph
Economizer
Operation
During
Power
Failu re -- Dampers have a spring return. In event of power failure, dampers will return to fully closed position until power is
restored. Do not manually ol)emte
1
damper motol:
49
7
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 manifold hose.
This system uses Puron refrigerant
which has higher
pressmes than R-22 and other refrigerants. No other refrigerant may be used in this system. Gage set, hoses, and
recovery system must be designed to handle Puron refrigerant. If unsure about equipment, consult the equipment
manu facture_:
NOTE: Do not use recycled
contaminants.
refrigerant
as it may
contain
NO CHARGE -- Use stan&trd evacuating techniques. After
evacuating system, weigh in the specified amount of refrigerant (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 temperaturesensing 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 mnbient temperatme does not affect leading.
TO USE THE COOLING CHARGING
CHART -- Use the
above temperature and pressure readings, and find the intersection 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. Recheck suction pressure as chmge is adjusted.
NOTE: Indoor-air cfin must be within normal operating
of unit. All outdoor fans must be operating.
Fig. 39 -- Charging
range
Chart -- 48PG28
equipment and replacement components am designed to operate 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 U cylinder 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. Manifold 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.
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
Gas Valve Adjustment
Liquid
Pressure
a_ Liquid
Valve,
NATURAL GASThe gas valve ()pens and closes in response 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_essuremeasuring device.
[p_igl
Fig. 37 -- Charging Chart -- 48PG20
5O
4. SetmaingasvalvetoONposition.
5. Setthennostat
atsetting
tocallforheat.
6. Remove
screw
capcovering
regulator
adjustment
sclew
(see
Fig.40).
7. Turnadjustment
screw
clockwise
toincrease
pressure
or
counterclockwise
todecrease
pressure.
8. Oncedesired
pressure
is established,
setunitsetting
fornocallforheat,turnoff maingasvalve,remove
pressure-measuring
device,andreplaceI/s-in.pipe
plugandscrewcap.
2 LEADS,
#18 WIRE
1/32
REGULATOR
ADJUSTMENT
INSULATION,
REMOVE
OUTLET
/'TAP
600V.
RECEPTACLE
J
i
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.
-- For all applications, main
factory set and should require no adjustment.
MAIN BURNER REMOVAL
1. Shut off (field-supplied)
burners
Shut off power to unit.
3.
Remove gas section access panel.
4.
Disconnect
1/8 - 27 N.P.q_ THDS.
RECEPTACLE
N.P.]_
THDS.
CONNECTION
1/4" O.D. TUBING
(PLUGGED)
TERMINAL
are
Fig. 40 -- Gas Valve
CLEANING
AND ADJUSTMENT
1. Remove burner
Burner Removal
gas piping from gas valve inlet.
rack from unit as described
section above.
2.
Inspect burners, and if dirty, remove
3.
Using a soft brash, clean burnel_ and crossover
required.
Remove wires from gas valve.
Remove wires from rollout switch.
7.
Remove
sensor wire and ignitor cable from [GC board.
4.
5.
Adjust spark gap. See Fig. 41.
Reinstall burners on rack.
8.
Remove
2 screws securing manifold
6.
Reinstall burner rack as described
9.
Remove 2 screws that hold the burner assembly
bule plate.
Lift burner/manifold
PI LOT
/
5.
6.
10.
jl/8-27
FOR
(PLUGGED)
AND
TAB COMBINATION
TERMINAL
_",
manual main gas valve.
2.
PRESSURE
(PLUGGED)
MAX.,
High Altitude--For
Main Burners
SCREW
COVER)
bracket to basepan.
in Main
burners from rack.
port as
above.
to vesti-
assembly out of unit.
,_
I
_
I
I
I
I
_
_
°"1
I
,
SEE DETAIL "C"
[ ............................
,
......
.....................
,[ ,, ...............
i, .............
i ....
I
,
SPARK GAP.12ff'TO.140"
_._RK
DETAIL "C"
Fig. 41 -- Spark Gap Adjustment
51
GAP .181"
I1 ,_2 -
I
I
ix
I <-_
_'_
l
Table 32 -- Altitude Compensation*
NATURAL GAS
NATURAL
ELEVATION
(ft)
Low Heat
0-1,999
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
10,000
29
29
3O
3O
3O
3O
31
31
31
32
GAS ORIFICE SIZEt
Medium Heat
3O
3O
31
31
31
31
32
32
32
33
High Heat (6 Cell)
High
29
29
30
30
30
30
31
31
31
32
Heat
(8 Cell)
29
29
30
30
30
30
31
31
31
32
*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
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
Medium Heat
High Heat (6 Cell)
35
36
36
37
37
38
39
4O
41
42
38
39
39
4O
4O
41
42
43
44
45
35
36
36
37
37
38
39
4O
41
42
High
Heat
(8 Cell)
35
36
36
37
37
38
39
40
41
42
*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 exposed 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
Overcurrent
protection.
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 protection 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 manual 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.
PROTECTION
-- Each compressor
has internal line break motor
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 energized until manually reset or cooling demand is removed.
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.
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 operation. 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.
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 suction line sel-vice port. Protect joint during brazing operations
ne_u joint.
Control
Circuit, 24-VEach control circuit is protected 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.
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 energize to block further compressor operation. The freeze protection 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.
Replacement
parts may
request.
Diagnostic
Parts
be obtained
-- A complete list of replacement
from any Career distributor upon
LEDs -- The [GC control board has a LED
for diagnostic purposes. See Unit Troubleshooting
section on
page 57 for mole information.
52
:
®
IGC
I
I
53
[
COMP A1
[
EQUIP GND
208/Z30V
ORMI
OFCR
OFM3
CORNECT
APPROPRIATE
WIRE TO
UNIT VOLTAGE
F_]YEL
RLK
--RL_
TRAN1
_RER_BR_
TO CRI
IR_R AMPR/
_
CONNECT
APPROPRIATE
ROP (X_
RID
:
Ot_
4SOY
TO _4V
CHEHATIE
FIRE TO
URIT VOLTAGE
IISV
I
GRA
SECONDARY
120v
L
Fig. 43 -- Typical Power Schematic
54
r
COMPONENT ARRANGEMENT
PLUG
RREEB£STAT
LO(_A'nONS
EVaPOratOR_E_R_ B_E_
zo_z_
C_PRESSO_
LOCATION RZFERERCZ
CONTROL BOX
(CONTROL BOARD}
iRE 3 HEAT SZGT]O_ PARTITIOR
(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}
su_
COOLER
I................
J.,
CONI'ROL BOX
CONPRESSOR
OB TD()OR
CONTACTORG
AL
L_
CIRCUIT
B
•SMO_E
DETECTOR
SMO_E
CORTROL:
_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_
TEMPERATURE
AND
CONDB_SB_ COIL
LPSA
CCHDI
CCHAI
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
(OF_1)
SECTIOR
PL11 CONDENSER
(OF_2)
CONDENSER
PL12 IOE_3)
SECTIO_
PL13 CONDENSER
(OF_4)
CONDENSER
PL14 IOF_5)
SECTIO_
SECTIOR
SECTION
PLIE CONDENSER SECTIO_
(OF_R)
RAN SECTIO_
PlIR (FAN STATUS ACCESSORY)
ECONOMIZER UECT_O_
PL17 (R-POSITIO_ DAMPED1
PlIR COMPRESSOR
SECTIO_
(COD SENSOR1
PL19 COmpReSSORSECTIO_
_S_OK_DET£CTORCONTROL_O_ULE
LEGEND FOR FIG. 42-45
CIRCUIT
D
CCHAR
HPSD
THERMOSTAT/IGC
BM
C
CM
CS
G
IFO
L1
R
RT
SS
W
W1
W2
X
Y1
Y2
-----------------
CCHA]
GAS HEAT ONLY
FI_,R'S_ATU'_
' '
ZVAP CIRCUIT
OUTLET
---A
AUX
AL
---B
C
CAP
CB
CCH
OLD
COMP
CT BRKCR
DU
ECB
FCS
FlOP
FPT
FS
FU
GND
GV
HACR
TRA_SFO_
CONFIGURATIOR
MARKINGS
BIowerMotor
Common
Inducer Motor
Centrifugal Switch
Fan
Indoor Fan On
Line 1
Thermostat
Power
Power Supply
Speed Sensor
Thermostat
Heat
1st Stage of Heating
2nd Stage of Heating
Alarm Output
tst Stage of Cooling
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.
Fig. 45 -- Typical Component
HERM
HPS
I
IAQ
IDM
IDR
IFC
IFCB
IFM
IGC
LOR
-- 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
Arrangement -- 48PG28
LPS
LS
OAS
OFC
OFM
PEC
PEM
PL
PLP
QC
QT
RAS
RS
SAT
TB
TRAN
TXV
W/AT
-------------------
O
@
Low-Pressure
Switch
Limit Switch
Outdoor-Air Sensor
Outdoor-Fan
Contactor
Outdoor=Fan Motor
Power Exhaust Contactor
Power Exhaust Motor
Plug
Phase Loss Protection
Quick Connect
Quadruple Terminal
Return Air Sensor
Rollout Switch
Supply-Air Temperature
Terminal Block
Transformer
Thermostatic
Expansion Valve
With Auxiliary Trip
Terminal
Block
Terminal
(Unmarked)
Terminal
(Marked)
--
Factory
Wiring
....
Field Wiring
m
To Indicate Common Potential
OnlF Notto Represent Widng.
....
To Indicate
FlOP or Accessory
TROUBLESHOOTING
Unit Troubleshooting-
Refer to Tables 33-35 and
Fig. 46.
Table 33 -- Cooling Service Analysis
PROBLEM
CAUSE
Compressor
and Condenser
Fan Will Not Start,
Power failure.
Fuse blown or circuit breaker
Defective
relay.
thermostat,
Insufficient
Incorrect
setting
Faulty wiring
circuit.
Defective
Determine
Replace
motor.
Pressure
Too Low.
Locate
Locate
restriction
and remove.
unit size.
leak, repair, and recharge.
Condenser
Clean coil or remove restriction.
coil dirty or restricted.
Dirty air filter.
Replace
coil.
refrigerant,
evacuate
system,
and recharge.
filter.
Clean coil.
overcharged.
Recover
excess
refrigerant.
1. Check TXV bulb mounting and secure
2. Replace TXV if stuck open or closed.
Recover
air restricted
or air short-cycling.
charge.
Determine
refrigerant,
Remove
evacuate
system,
repair, and recharge.
restriction.
Check for source
Faulty TXV.
1. Check TXV bulb mounting and secure
2. Replace TXV if stuck open or closed.
overcharged.
charge.
device
Insufficient
Temperature
Field-installed
Recover
excess
Replace
filter.
Check for leaks,
or low side restricted.
Remove
source
and eliminate.
airflow.
too low in conditioned
filter drier
Increase
area.
restricted.
Replace.
LEGEND
Valve
57
line.
tightly to suction
line.
repair, and recharge.
of restriction.
air quantity.
Reset thermostat.
tightly to suction
refrigerant.
1. Check TXV bulb mounting and secure
2. Replace TXV if stuck open or closed.
evaporator
line.
and recharge.
High heat load.
Dirty air filter.
tightly to suction
cause and correct.
Check for leaks,
in liquid tube.
Faulty TXV.
Expansion
cause and replace.
Reset thermostat.
charge.
Low refrigerant
to
thermostat.
Recover
Metering
Thermostatic
and recharge
cause and correct.
cause and correct.
Replace filter.
Decrease load or increase
for load.
Low refrigerant
TXV --
breaker.
Air in system.
Refrigerant
Suction
compressor.
Replace.
system.
set too low.
Restriction
Pressure.
cause for safety trip and reset lockout.
overload.
Air in system.
Suction
Replace
Recover refrigerant, evacuate system,
nameplate.
Replace and determine cause.
Faulty TXV.
Excessive
cause and replace.
Determine
thermostat.
Condenser
room temperature.
Determine
Defective
Refrigerant
Too Low,
below
and repair or replace.
cause.
Defective
Dirty condenser
Head Pressure
and rewire correctly.
setting
Determine
Determine
Determine
Low refrigerant
Pressure.
or undercharge.
in refrigerant
diagram
Replace fuse or reset circuit
Determine
cause.
compressor.
Dirty air filter.
Unit undersized
cause and correct.
Check wiring
Insufficient
line voltage.
Blocked condenser.
Thermostat
Head
or internal
power dead.
overcharge
Restriction
Excessive
out, seized,
locked out
Faulty condenser-fan
Operates
in compressor
breaker.
component.
Lower thermostat
overload.
Refrigerant
Replace
Check wiring
too high.
One leg of 3-phase
Compressor
continuously.
or control
Determine
or loose connections
Compressor
Defective
transformer,
line voltage.
Compressor
motor burned
overload open.
Compressor
Cycles
(other than normally
satisfying
thermostat),
tripped.
contactor,
or faulty wiring.
Thermostat
Compressor
Will Not Start
but Condenser
Fan Runs.
REMEDY
Gall power company.
Replace fuse or reset circuit
Check filter and replace
if necessary.
Table 34 -- Gas Heating Service Analysis
PROBLEM
Burners Will Not Ignite.
CAUSE
Misaligned
REMEDY
spark electrodes.
Check flame ignition and sensor electrode
Adjust as needed.
No gas at main burners.
positioning.
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.
Water in gas line.
Drain water and install drip leg to trap water.
No power to furnace.
No 24 v power supply
Inadequate
Heating,
Check power supply, fuses, wiring,
to control circuit.
Miswired or loose connections.
Check all wiring
Burned-out heat anticipator in thermostat.
Broken thermostat wires.
Replace
Characteristics.
breaker.
Dirty air filter.
Gas input to unit too low.
Clean
Unit undersized for application.
Restricted airflow.
Replace
Blower speed
Install alternate
fan speed.
and wire nut connections.
thermostat.
Run continuity
check.
Replace
wires
if necessary.
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.
with proper
Clean filter, replace
too low.
unit or add additional
unit.
filter, or remove any restrictions.
motor, if applicable,
or adjust pulley to increase
Limit switch cycles
main burners.
Check rotation of blower, thermostat
heat anticipator
and temperature
rise of unit. Adjust as needed.
Too much outdoor
air.
Adjust
minimum
settings,
position.
Check economizer
Poor Flame
and circuit
Check transformer.
Transformers
with internal overcurrent
protection require a cool-down
period before resetting. Check 24-v
circuit breaker; reset if necessary.
operation.
Incomplete combustion (lack of combustion air)
results in:
Check all screws around
Tighten as necessary.
Aldehyde odors, CO, sooting flame, or floating
flame.
Cracked
heat exchanger.
flue outlets
Replace
Overtired unit -- reduce input,
line or manifold pressure.
Check vent for restriction.
compartment.
heat exchanger.
change
Clean
and burner
orifices,
or adjust gas
as necessary.
Check orifice to burner alignment.
Burners
Will Not Turn Off.
Unit is locked into Heating mode for a one minute
minimum.
58
Wait until mandatory
power to unit.
one minute time period
has elapsed
or
I
I
1 FLASH
MO[Y_=IED
-_
(HE&TING)
FNq DELAY
-9ATICH
_
2 _S
p-L=
OF LIMIT
ON
3 FLASHES - FLAIdE SE_NS(_
INI:_ATES _
V_H
CLOSED GAS VALVE
I
4 _
- UMIT 9PATCH
CYCLED 4 TIMES ON SINGLE
CALL FOR HEAT
I 5 (No
_ _
I
,
- INDt.W3EDDRAFT
MOT(_ FAULT
(No _gnaJ _om _'_e H=_ B'_ct
Sensor for e0 second)
4, NO POWER TO UNtT
t
- v4htn
IG_fi]ON
15 minutes)
LOCKOUT
oLr_
FAN I_
,
6 _
_1
I
2. (_=ECTNE
24V TRN_S.
3, BROKE_ V_RE
, BLOWN 5 AMP FUSE
,i
,_
I SECONO
I
'Wl' IGC
ON
FROM
- I MINUTE
BASE CONTROL
LOCK-ON BOARD
ENERGIZES
'W'
I
ON DELAY
b
SAll-_
ROtU3trr
7_-_OF
t
_
OUIIX)OR FAN STC_
_MEDIATELY
'
30 S_D_OFF
'_
I
9 FLASHES
LOCKOUT
- SOFTWARE
I
E_'FECT
S/_NSOR
_'_DS
_
IF I_M IS
_
AT CORRE_f
I
_X:_AL(ATTO
TERMINAL
*Jr' ONHALL
IGC
SPI_I)
LEAST
2400 RPI_,
I
I
BY
FOR _NOOORFAN
_'-
J
-I
/
LOGIC V_LL INITIATE IGNITION
HIGH VOLTAGE
CREATES A
10,000 "_)LT SPi_K
8ECONOS
FOR 5
I
VALVE FOR 5 5_-43OND8
{GC S_ETY LOGIC OPENS GAS
I
I
I
OFF GAS VALVE AND SPARK
_C S/_ET, f LOGIC V_LL _HUT
Yes
EXCHANGER
I
Yes
IND_'_
(5 _
OF L_)
No
LEGEND
IDM
IGC
---
Induced-Draft Motor
Integrated Gas Unit Controller
NOTE: Thermostat
"AUTO" position.
Fan
Switch
in
,i,
the
I
_ sTc_,sA_-rY
LC_ _
O_ _ V__V_
I
,I,
(DELAY EXTENDED
BY 5 SECONDS
FOR F-a_H UMIT SWfICH
MAXIMUM DELAY: 3 MINUTEB)
Fig. 46 -- IGC Control (Heating and Cooling)
.s9
TRP
-
FAN ON TIME DELAY
Table 35 -- IGC Board LED Alarm Codes
LED
FLASH
CODE
On
Off
ACTION TAKEN
CONTROL
DESCRIPTION
Normal Operation
Hardware Failure
BY
RESET
METHOD
PROBABLE
No gas heating,
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.
Indoor Fan On/Off Delay
Modified
5 seconds subtracted from
On delay.
5 seconds added to Off
delay (3 min max).
Power reset.
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.
2 Flashes
Limit Switch
Gas valve and igniter Off.
Indoor fan and inducer On.
Limit switch closed, or
heat call (W) Off.
High temperature
limit switch is open. Check the operation 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.
3 Flashes
Flame Sense Fault
Indoor fan and inducer On.
Flame sense normal.
The IGC sensed a flame when the gas valve should be
Power reset for LED reset. closed. Check wiring, flame sensor, and gas valve
4 Flashes
Four Consecutive Limit
Switch Fault
No gas heating.
Heat call (W) Off.
Power reset for LED reset.
4 consecutive
limit switch faults within
heat. See Limit Switch Fault.
5 Flashes
Ignition Fault
No gas heating.
Heat call (W) Off.
Power reset for LED reset.
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.
6 Flashes
Induced
If heat off: no gas heating.
If heat on: gas valve Off and
inducer On.
Inducer sense normal, or
heat call (W) Off.
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.
7 Flashes
Rollout
Gas valve and igniter Off.
Indoor fan and inducer On.
Power reset.
Rollout switch has opened. Check gas valve operation. Check induced-draft
blower wheel is properly
secured to motor shaft.
8 Flashes
Internal
No gas heating,
Power reset.
IGC has sensed internal hardware or software error. If
fault is not cleared by resetting 24 v power, replace the
IGC.
9 Flashes
Temporary
1 Flash
Fault
operation.
Draft Motor Fault
Switch
Control
Lockout
Lockout
Software
Lockout
hour auto reset, or
_owerreset.
No gas heating,
LEGEND
IGC
LED
i
i
IV Troubleshooting
10.
ECONOM[$ER
IV PREPARATION
-- This procedure
is
used to prepare the EconoMiSer IV for troubleshooting.
No
troubleshooting or testing is done by performing the following
before Be
starting
I tiometers
IMPORTANT:
sure totroubleshooting.
record the positions of all poten - ]
1. Disconnect power at TR and TRI. All LEDs should be
off. Exhaust fan contacts should be open.
2. Disconnect device at P and PI.
JumperPtoPl.
Disconnect wires at T and TI. Place 5.6 kilo-ohm resistor
across T and TI.
8.
Put 620-ohm
9.
Set minimum
checkout
resistor across terminals
position,
DCV
set
resistor across
and
position
potentiometer
fully CW
3.
Place 1.2 kilo-ohm resistor
Cool LED should be lit.
4.
Remove 620-ohm resistor
Cool LED should turn off.
5.
Return EconoMiSer
IV settings
after completing troubleshooting.
ENTHALPY
across
across
SR and +. The Free
So and +. The Free
and wiring
to norm_d
-- To check single enth_dpy:
1. Make sure EconoMi$er
IV prepmation procedure
been performed.
2. Set the enthalpy potentiometer to A (fully CCW).
Free Cool LED should be lit.
SR and +.
point,
Set DCV maximum
(clockwise).
SINGLE
5. Jumper TR to 1.
6. Jumper TR to N.
7. If connected, remove sensor from terminals So and +.
4074EJM
the IGC software.
DIFFERENTIAL
ENTHALPY-To check differential
enthalpy:
1. Make sure EconoMiSer
IV prepmation procedure has
been performed.
2. Place 620-ohm resistor across So and +.
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.
Connect 1.2 kilo-ohm
terminals So and +.
is disrupting
11. Set enthalpy potentiometer to D.
12. Apply power (24 vac) to termimds TR and TRI.
procedure.
3.
4.
interference
call for
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.
Integrated Gas Unit Control
Light-Emitting
Diode
EconoMi$er
Electrical
a single
exhaust
potentiometers fully CCW (counterclockwise).
60
3.
Set the enthalpy potentiometer
Cool LED should turn off.
4.
Return EconoMiSer [V settings
after completing troubleshooting.
has
The
to O (fully CW). The Free
and wiring
to normJ
DCV (DemandControlledVentilation)
AND POWER
EXHAUST
-- Tocheck
DCVandPower
Exhaust:
1. MakesumEconoMi$er
IV prepguation
procedure
has
been
performed.
2. Ensure
terminals
AQandAQI areopen.
TheLEDfor
bofllDCVandExhaust
shouldbe off. Theactuator
should
befullyclosed.
3. Connect
a 9-vbattery
to AQ(positive
node)andAQI
(negative
node).
TheLEDforbothDCVandExhaust
should
turnon.Theactuator
should
drivetobetween
90
and95%open.
4. TurnfileExhaust
potentiometer
CWuntiltheExhaust
LEDturnsoff. TheLED shouldturnoff whenthe
potentiometer
isapproximately
90%.Theactuator
should
remain
inposition.
5. TurntheDCVsetpointpotentiometer
CWuntiltheDCV
LEDturnsoff.TheDCVLEDshould
turnoffwhenthe
potentiometer
isapproximately
9 v.Theactuator
should
drivefullyclosed.
6. TurntheDCVandExhaust
potentiometel.s
CCWuntil
theExhaust
LEDturnson.Theexhaust
contacts
will
close
30to120seconds
aftertheExhaust
LEDturnson.
7. Return
EconoMi$er
IV settings
andwiringto norm_d
aftercompleting
troubleshooting.
DCVMINIMUMANDMAXIMUMPOSITION
-- Tocheck
theDCVminimum
andmaximum
position:
1. MakesumEconoMi$er
IV prepmation
procedure
has
been
performed.
2. Connect a 9-v battery to AQ (positive node) and AQI
3.
4.
5.
(negative node). The DCV LED should turn on. The
actuator should drive to between 90 and 95% open.
Turn the DCV Maximum Position potentiometer to midpoint. The actuator should &ive to between 20 and 80%
open.
Turn the DCV Maximum Position potentiometer to lhlly
CCW. The actuator should drive fully closed.
Turn the Minimum Position potentiometer
to midpoint.
The actuator should drive to between 20 and 80% open.
6.
Turn the Minimum Position Potentiometer
actuator should drive lhlly open.
7.
Remove the jumper fi_m TR and N. The actuator
drive fully closed.
8.
Return EconoMi$er
IV settings
after completing troubleshooting.
MIXED-AIR
2.
and wiring
INPUT -- To check mixed-air
1. Make sum EconoMi$er
been performed.
lhlly CW. The
IV preparation
should
to norm_d
input:
procedure
has
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
The actuator should drive lhlly open.
4.
Remove the jumper across T and TI. The actuator
drive fully closed.
5.
Return EconoMi$er
IV settings and wiring to normal
after completing troubleshooting.
ECONOM[$ER
IV TROUBLESHOOTING
COMPLETION -- This procedure is used to return the EconoMiSer IV
to operation. No troubleshooting or testing is done by performing the following procedure.
1. Disconnect
2.
3.
4.
5.
6.
+.
7.
8.
9.
10.
Remove
Remove
Remove
wires at
jumper from TR to N.
jumper from TR to 1.
5.6 kilo-ohm resistor from T and TI. Reconnect
T and TI.
Remove jumper
PI.
11. Apply power (24 vac) to terminals
Blinking
Off
61
device at P and
TR and TRI.
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 senses an incorrect phase relationship, the relay (KI) will be deenergized (opening its contact). If the phase relationship is
correct, the relay will be energized. The control has a selfbypass function after a pre-set time. If the control detemrines
flint file three phases stay in a correct relationship for 10 consecutive 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 voltage 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
should
from P to PI. Reconnect
Phase Loss Protection-
On Continuously
T to TI.
power at TR and TRI.
Set enthalpy potentiometer to previous setting.
Set DCV maximum position potentiometer
to previous
setting.
Set minimum position, DCV set point, and exhaust
potentiometel.s to previous settings.
Remove 620-ohln resistor from terminals SR and +.
Remove 1.2 kilo-ohm checkout resistor from terminals
So and +. [fused, reconnect sensor from temrinals So and
FUNCTION
Relay contact closed (normal operation).
Relay contact open (phase loss or phase
reversal has occurred) -- No power will be
supplied to the control system.
24 vac control power not present (off).
Copyright 2005 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications
PC 111
Catalog No. 534-80211
Printed in U.S.A.
or designs without notice and without incurring obligations.
Form 48PG-10SI
Pg 62
9-05
Replaces:
New
UNIT START-UP
MODEL
NO.:
CHECKLIST
SERIAL
DATE:
NO.:
TECHNICIAN:
PRE-START-UP:
[]
VERIFY
THAT ALL PACKING
MATERIALS
HAVE BEEN REMOVED
[]
VERIFY
INSTALLATION
OF OUTDOOR
[]
VERIFY
INSTALLATION
OF FLUE EXHAUST
[]
VERIFY
THAT CONDENSATE
[]
VERIFY
THAT ALL ELECTRICAL
[]
VERIFY
GAS PRESSURE
[]
CHECK
GAS PIPING
[]
CHECK
THAT INDOOR-AIR
[]
CHECK
THAT OUTDOOR
[]
VERIFY
THAT UNIT IS LEVEL
[]
CHECK FAN WHEEL
IS TIGHT
[]
VERIFY
THAT FAN SHEAVES
[]
VERIFY
THAT SCROLL
[]
VERIFY
INSTALLATION
[]
VERIFY
THAT CRANKCASE
FROM UNIT
AIR HOOD
CONNECTION
AND INLET HOOD
IS INSTALLED
CONNECTIONS
PER INSTRUCTIONS
AND TERMINALS
TO UNIT GAS VALVE IS WITHIN
SPECIFIED
ARE TIGHT
RANGE
FOR LEAKS
FILTERS
ARE CLEAN
AIR INLET SCREENS
AND IN PLACE
ARE IN PLACE
LU
AND PROPELLER
FOR LOCATION
IN HOUSING/ORIFICE,
AND VERIFY
z
SETSCREW
LU
ARE ALIGNED
COMPRESSORS
AND BELTS ARE PROPERLY
ARE ROTATING
TENSIONED
IN THE CORRECT
DIRECTION
z
OF THERMOSTAT
HEATERS
o
HAVE BEEN ENERGIZED
FOR AT LEAST
<
24 HOURS
o
II. START-UP
ELECTRICAL
SUPPLY
VOLTAGE
COMPRESSOR
SUPPLY
AMPS
LI-L2
--
L2-L3
L3-LI
COMPRESSOR
AI
LI
L2
L3
COMPRESSOR
A2
LI
L2
L3
COMPRESSOR
B1
LI
L2
L3
LI
L2
L3
FAN AMPS
LU
z
TEMPERATURES
LU
OUTDOOR-AIR TEMPERATURE
RETURN-AIR TEMPERATURE
F DB (Dry Bulb)
F DB
COOLING SUPPLY AIR
GAS HEAT SUPPLY AIR
F
F
F
WB (Wet Bulb)
Z
o
<
o
PRESSURES
GAS INLET PRESSURE
GAS MANIFOLf) PRESSURE STAGE NO. 1
REFRIGERANT SUCTION
CIRCUIT A
CIRCUIT B
REFRIGERANT DISCHARGE CIRCUIT A
CIRCUIT B
[]
IN. WG
STAGE NO. 2
IN. WG
IN. WG
PSIG
PSIG
PSIG
PSIG
VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS ON PAGE 50
GENERAL
[] ECONOMIZERMINIMUM VENT ANDCHANGEOVER SETTINGSTO JOB REQUIREMENTS
Copyright 2005 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications
Book
1 14
Tab
1a 16a
PC 111
Catalog No, 534-80211
Printed in U.S.A.
or designs without notice and without incurring obligations.
Form 48PG-10SI
Pg CL-1
9-05
Replaces:
New
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