48TF004-007
Single-Package Rooftop
Heating/Cooling Units
Installation, Start-Up, and
Service Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35
Step 1 — Provide Unit Support . . . . . . . . . . . . . . . . . . . 1
• ROOF CURB
• SLAB MOUNT
Step 2 — Field Fabricate Ductwork . . . . . . . . . . . . . . . 2
Step 3 — Install External Trap for Condensate
Drain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Step 4 — Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . 2
• POSITIONING
Step 5 — Install Flue Hood . . . . . . . . . . . . . . . . . . . . . . . 4
Step 6 — Install Gas Piping . . . . . . . . . . . . . . . . . . . . . . 4
Step 7 — Make Electrical Connections . . . . . . . . . . . 8
• FIELD POWER SUPPLY
• FIELD CONTROL WIRING
• HEAT ANTICIPATOR SETTINGS
Step 8 — Make Outdoor-Air Adjustments
and Install Outdoor-Air Hood. . . . . . . . . . . . . . . . . . 11
• MANUAL OUTDOOR-AIR DAMPER
• OPTIONAL DURABLADE ECONOMIZER
• OPTIONAL ECONOMI$ER
Step 9 — Adjust Evaporator-Fan Speed . . . . . . . . . 19
• DIRECT-DRIVE MOTORS
• BELT-DRIVE MOTORS
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36-38
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38-43
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . 44-49
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . CL-1
Disconnect gas piping from unit when leak
testing at pressure greater than 1/2 psig.
Pressures greater than 1/2 psig will cause
gas valve damage resulting in hazardous
condition. If gas valve is subjected to pressure greater than 1/2 psig, it must be
replaced before use. When pressure testing
field-supplied gas piping at pressures of
1/ psig or less, a unit connected to such
2
piping must be isolated by manually closing
the gas valve.
Before performing service or maintenance operations on
unit, turn off main power switch to unit and install a lockout tag. Electrical shock could cause personal injury.
INSTALLATION
Unit is shipped in the vertical duct configuration. To convert
to horizontal configuration, remove screws from side duct
opening covers and remove covers. Using the same screws, install covers on vertical duct openings with the insulation-side
down. Seals around duct openings must be tight. See Fig. 1.
Confirm before installation of unit that voltage, amperage
and circuit protection requirements listed on unit data plate
agree with power supply provided.
Step 1 — Provide Unit Support
SAFETY 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 air-conditioning equipment.
Untrained personnel can perform basic maintenance functions of cleaning coils and filters and replacing filters. All other
operations should be performed 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 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.
ROOF CURB — Assemble and install accessory roof curb in
accordance with instructions shipped with curb. See Fig. 2. Install insulation, cant strips, roofing felt, and counter flashing as
shown. Ductwork must be attached to curb, not to the unit. The
accessory thru-the-bottom power and gas connection package
must be installed before the unit is set on the roof curb. If fieldinstalled (thru-the-roof curb) gas connections are desired, use
factory-supplied 3/4-in. pipe coupling and gas plate assembly to
mount the thru-the-roof curb connection to the roof curb. Gas
connections and power connections to the unit must be field installed after the unit is installed on the roof curb.
If electric and control wiring is to be routed through the
basepan, attach the accessory thru-the-bottom service connections to the basepan in accordance with the accessory installation instructions.
IMPORTANT: The gasketing of the unit to the roof curb
is critical for a watertight seal. Install gasket supplied
with the roof curb as shown in Fig. 2. Improperly
applied gasket can result in air leaks and poor unit
performance.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 111
Catalog No. 534-80000
Printed in U.S.A.
Form 48TF-1SI
Pg 1
8-00
Replaces: New
Book 1 4
Tab 1a 6a
Fig. 1 — Horizontal Conversion Panels
When using the standard side drain connection, make sure
the plug (Red) in the alternate bottom connection is tight before
installing the unit.
To use the bottom drain connection for a roof curb installation, relocate the factory-installed plug (Red) from the bottom
connection to the side connection. See Fig. 4. The piping for
the condensate drain and external trap can be completed after
the unit is in place.
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 downstream from the external trap,
pitch the line away from the unit at 1 in. per 10 ft of run. Do not
use a pipe size smaller than the unit connection (3/4 in.).
Curb should be level. Unit leveling tolerances are shown in
Fig. 3. This is necessary for unit drain to function properly. Refer to Accessory Roof Curb Installation Instructions for additional information as required.
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 air inlet
to prevent grass and foliage from obstructing airflow.
NOTE: Horizontal units may be installed on a roof curb if
required.
Step 2 — Field Fabricate Ductwork — Secure all
ducts to roof curb and building structure on vertical ducted
units. Do not connect ductwork to unit. For horizontal applications, field-supplied flanges should be attached to horizontal
duct openings and all ductwork should be 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 barrier.
If a plenum return is used on a vertical 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 –.20 in. wg with
EconoMi$er, –.35 in. wg with Durablade economizer, or
–.45 in. wg without economizer.
These units are designed for a minimum continuous heating
return-air temperature of 50 F (dry bulb), or an intermittent operation down to 45 F (dry bulb), such as when used with a night
set-back thermostat.
Step 4 — Rig and Place Unit — Inspect unit for
transportation damage. File any claim with transportation
agency. Keep unit upright and do not drop. Spreader bars are
not required if top crating is left on unit. Rollers may be used to
move unit across a roof. Level by using unit frame as a reference. See Table 1 and Fig. 5 for additional information.
Lifting holes are provided in base rails as shown in Fig. 6.
Refer to rigging instructions on unit.
All panels must be in place when rigging.
POSITIONING — Maintain clearance around and above unit
to provide minimum distance from combustible materials,
proper airflow, and service access. See Fig. 6. A properly positioned unit will have the following clearances between unit and
roof curb: 1/4-in. clearance between roof curb and base rails on
each side and duct end of unit; 1/4-in. clearance between roof
curb and condenser coil end of unit. (See Fig. 2, section C-C.)
Do not install unit in an indoor location. Do not locate unit
air inlets near exhaust vents or other sources of contaminated
air.
Be sure that unit is installed such that snow will not block
the combustion intake or flue outlet.
Step 3 — Install External Trap for Condensate
Drain — The unit’s 3/4-in. condensate drain connections are
located on the bottom and side of the unit. Unit discharge connections do not determine the use of drain connections; either
drain connection can be used with vertical or horizontal
applications.
2
ROOF CURB
ACCESSORY
CRRFCURB001A00
CRRFCURB002A00
B
1′-911/16″
[551]
C
1′-4″
[406]
A
UNIT SIZE
1′-2″
[356]
2′-0″
[610]
48TF004-007
D ALT
DRAIN
HOLE
13/4″
[44.5]
NOTES:
1. Roof curb accessory is shipped disassembled.
2. Insulated panels.
3. Dimensions in [ ] are in millimeters.
4. Roof curb, galvanized steel.
5. Attach ductwork to curb (flanges of duct rest on curb).
6. Service clearance: 4 ft on each side.
“E”
GAS
“F”
POWER
“G”
CONTROL
CONNECTOR
PKG. ACCY.
3/ ″
4
[19] NPT
1/ ″
2
[12.7] NPT
3/ ″
4
[19] NPT
3/ ″ [19] NPT)
4
11/4″ [31.7]
1/ ″
2
[12.7]
CRBTMPWR001A00
CRBTMPWR002A00
1/ ″
2
[12.7]
CRBTMPWR003A00
3/ ″
4
[19] NPT
11/4″
[31.7]
7.
Direction of airflow.
8. Connector packages CRBTMPWR001A00 and 002A00 are for thru-thecurb connections. Packages CRBTMPWR003A00 and 004A00 are for
thru-the-bottom connections.
CRBTMPWR004A00
3
Fig. 2 — Roof Curb Dimensions
Flue gas can deteriorate building materials. Orient unit such
that flue gas will not affect building materials.
Adequate combustion-air space must be provided for proper
operation of this equipment. Be sure that installation complies
with all local codes and Section 5.3, Air for Combustion and
Ventilation, NFGC (National Fuel Gas Code), and ANSI
(American National Standards Institute) Z223.1, and NFPA
(National Fire Protection Association) 54 TIA-54-84-1.
In Canada, installation must be in accordance with the
CAN1-B149 installation codes for gas burning appliances.
After unit is in position, remove rigging skids and shipping
materials.
MAXIMUM ALLOWABLE
DIFFERENCE (in.)
A-B
0.5
B-C
1.0
A-C
1.0
Fig. 3 — Unit Leveling Tolerances
Step 5 — Install Flue Hood — Flue hood is shipped
screwed to the basepan beside the burner compartment access
panel. Remove from shipping location and using screws provided, install flue hood and screen in location shown in Fig. 7.
Step 6 — Install Gas Piping — Unit is equipped for
use with type of gas shown on nameplate. Refer to local building codes, or in the absence of local codes, to ANSI Z223.1 entitled National Fuel Gas Code. In Canada, installation must be
in accordance with the CAN1.B149.1 and CAN1.B149.2 installation codes for gas burning appliances.
For natural gas applications, gas pressure at unit gas connection must not be less than 4 in. wg or greater than
13.0 in. wg while unit is operating. On 48TF005,006,007 high
heat units, the gas pressure at unit gas connection must not be
less than 5 in. wg or greater than 13 in. wg while the unit is operating. For propane applications, the gas pressure must not
be less than 5 in. wg or greater than 13 in. wg at the unit
connection.
Size gas supply piping for 0.5 in. wg maximum pressure
drop. Do not use supply pipe smaller than unit gas connection.
Support gas piping as shown in the table in Fig. 8. For example, a 3/4-in. gas pipe must have one field-fabricated support
beam every 8 ft. Therefore, an 18-ft long gas pipe would have a
minimum of 2 support beams, a 48-ft long pipe would have a
minimum of 6 support beams.
See Fig. 8 for typical pipe guide and locations of external
manual main shutoff valve.
NOTE: Drain plug is shown in factory-installed position.
Fig. 4 — Condensate Drain Connection
Unit may be installed directly on wood flooring or on
Class A, B, or C roof-covering material when roof curb is used.
Although unit is weatherproof, guard against water from
higher level runoff and overhangs.
Flue vent discharge must have a minimum horizontal clearance of 4 ft from electric and gas meters, gas regulators, and
gas relief equipment.
Minimum distance between unit and other electrically live
parts is 48 inches.
3. Unit weights do not include economizer. See Table 1 for economizer
weights.
NOTES:
1. Dimensions in ( ) are in millimeters.
2. Hook rigging shackles through holes in base rail, as shown in detail “A.’
Holes in base rails are centered around the unit center of gravity. Use
wooden top skid when rigging to prevent rigging straps from damaging unit.
UNIT
48TFE,TFF,TFM,TFN004
48TFD,TFE,TFF,TFL,TFM,TFN005
48TFD,TFE,TFF,TFL,TFM,TFN006
48TFD,TFE,TFF007
All panels must be in place when rigging.
MAX WEIGHT
Lb
Kg
510
231
520
236
540
245
615
279
“A”
“C”
mm
in.
mm
in.
mm
73.69
1872
37.50
953
33.35
845
Fig. 5 — Rigging Details
4
“B”
in.
Table 1 — Physical Data — 48TF004-007
UNIT SIZE 48TF
NOMINAL CAPACITY (tons)
OPERATING WEIGHT (lb)
Unit
Al/Al*
Al/Cu*
Cu/Cu*
Economizer
Durablade
EconoMi$er
Roof Curb†
COMPRESSOR
Quantity
No. Cylinders (per Circuit)
Oil (oz)
REFRIGERANT TYPE
Expansion Device
Operating Charge (lb-oz)
Circuit 1
Circuit 2
CONDENSER COIL
Rows...Fins/in.
Total Face Area (sq ft)
CONDENSER FAN
Nominal Cfm
Quantity...Diameter (in.)
Motor Hp...Rpm
Watts Input (Total)
EVAPORATOR COIL
Rows...Fins/in.
Total Face Area (sq ft)
EVAPORATOR FAN
Quantity...Size (in.)
Type Drive
Nominal Cfm
Maximum Continuous Bhp
Motor Frame Size
Nominal Rpm High/Low
Fan Rpm Range
Motor Bearing Type
Maximum Allowable Rpm
Motor Pulley Pitch Diameter Min/Max (in.)
Nominal Motor Shaft Diameter (in.)
Fan Pulley Pitch Diameter (in.)
Belt, Quantity...Type...Length (in.)
Pulley Center Line Distance (in.)
Speed Change per Full Turn of
Movable Pulley Flange (rpm)
Movable Pulley Maximum Full Turns
From Closed Position
Factory Setting
Factory Speed Setting (rpm)
Fan Shaft Diameter at Pulley (in.)
E/F/M/N004
3
D/E/F/L/M/N005
4
D/E/F/L/M/N006
5
D/E/F007
6
460
465
468
470
476
482
490
497
505
565
576
587
34
47
115
34
47
115
34
47
115
34
47
115
1
2
50
Reciprocating
1
2
50
1
2
50
Scroll
1
2
54
R-22
Acutrol™ Metering Device
4-4
—
1...17
8.36
3500
1...22.0
1/ ...1100
4
325
2...15
4.17
Std
Alt
High-Static
Std
Alt
High-Static
Std
Alt
High-Static
Std
Alt
High-Static
Std
Alt
High-Static
Std
Alt
High-Static
Std
Alt
High-Static
Std
Alt
High-Static
Std
Alt
High-Static
Std
Alt
High-Static
Std
Alt
High-Static
Std
Alt
High-Static
Std
Alt
High-Static
Std
Alt
High-Static
Std
Alt
High-Static
1...10 x 10
1...10 x 10
1...10 x 10
Direct
Belt
Belt
1200
.34
1.00
2.40
48
48
56
860/800
1620
1725
—
760-1000
1075-1455
Ball
2100
—
1.9/2.9
2.8/3.8
1/
2
1/
2
5/
8
—
4.5
4.5
—
1...A...34
1...A...39
—
10.0-12.4
10.0-12.4
—
48
65
—
5
6
—
3
31/2
—
856
1233
5/
8
6-6
6-14
—
—
Enhanced Copper Tubes, Aluminum Lanced Fins
2...17
2...17
8.36
10.42
Propeller Type
4000
4000
1...22.0
1...22.0
1/ ...1100
1/ ...1100
4
4
325
325
Enhanced Copper Tubes, Aluminum Double-Wavy Fins
2...15
3...15
5.5
5.5
Centrifugal Type
1...10 x 10
1...11 x 10
1...10 x 10
1...10 x 10
1...10 x 10
1...11 x 10
Direct
Direct
Belt
Belt
Belt
Belt
1600
2000
.75
1.20
1.00
1.30/2.40**
2.40
2.90
48
48
48
56
56
56
1075/970
1075/970
1620
1725
1725
1725
—
—
835-1185
900-1300
1075-1455
1300-1685
Ball
Ball
2100
2100
—
—
1.9/2.9
2.4/3.4
2.8/3.8
3.4/4.4
1/
1/
2
2
1/
5/
2
8
5/
5/
8
8
—
—
4.0
4.5
4.5
4.5
—
—
1...A...34
1...A...39
1...A...39
1...A...40
—
—
10.0-12.4
14.7-15.5
10.0-12.4
14.7-15.5
—
—
70
80
65
60
—
—
5
5
6
5
—
—
3
3
31/2
31/2
—
—
975
1060
1233
1396
5/
5/
8
8
9-0
—
2...17
10.42
4000
1...22.0
1/ ...1100
4
325
4...15
5.5
1...10 x 10
—
1...10 x 10
Belt
—
Belt
2400
2.40
—
2.90
56
—
56
—
—
1725
1070-1460
—
1300-1685
Ball
2100
2.8/3.8
—
3.4/4.4
5/
8
—
5/
8
4.5
—
4.5
1...A...40
—
1...A...40
14.7-15.5
—
14.7-15.5
80
—
60
5
—
5
3
—
31/2
1225
—
1396
5/
8
††Rollout switch lockout is manually reset by interrupting power to unit or
resetting thermostat.
|| Single-phase units have a single-stage gas valve. The heating input values
are as follows:
48TFF004, 115,000 Btuh
48TFF005, 150,000 Btuh
48TFF006, 150,000 Btuh
NOTE: High-static motor not available on single-phase units.
LEGEND
Al
— Aluminum
Bhp — Brake Horsepower
Cu — Copper
*Evaporator coil fin material/condenser coil fin material. Contact your local
representative for details about coated fins.
†Weight of 14-in. roof curb.
**Single phase/three-phase.
5
Table 1 — Physical Data — 48TF004-007 (cont)
UNIT SIZE 48TF
FURNACE SECTION
Rollout Switch Cutout
Temp (F)††
Burner Orifice Diameter
(in. ...drill size)
Natural Gas
Liquid Propane
Std
Alt
Thermostat Heat Anticipator
Setting (amps)
208/230 v and 575
Stage 1
Stage 2
460 v
Stage 1
Stage 2
Gas Input (Btuh)||
Stage 1
Stage 2
(3-phase units)
Efficiency (Steady
State) (%)
Temperature Rise Range
Manifold Pressure (in. wg)
Natural Gas
Liquid Propane
Gas Valve Quantity
Gas Valve Pressure Range
Psig
in. wg
Field Gas Connection
Size (in.)
Std
Alt
E/F/M/N004
D/E/F/L/M/N005
D/E/F/L/M/N006
D/E/F007
195
195
195
195
TFD
TFE
TFF
TFL
TFM
TFN
TFD
TFE
TFF
TFL
TFM
TFN
—
.113...33
.113...33
—
.102...38
.102...38
—
.089...43
.089...43
—
.082...45
.082...45
.113...33
.113...33
.129...30
.102...38
.102...38
.116...32
.089...43
.089...43
.102...38
.082...45
.082...45
.089...43
.113...33
.113...33
.129...30
.102...38
.102...38
.116...32
.089...43
.089...43
.102...38
.082...45
.082...45
.089...43
.113...33
.113...33
.129...30
—
—
—
.089...43
.089...43
.102...38
—
—
—
TFD
TFE
TFF
TFL
TFM
TFN
.14
.14
.14
.14
—
72,000
82,000
—
60,000
90,000
.14
.14
.14
.14
72,000
115,000
120,000
60,000
90,000
120,000
.14
.14
.14
.14
72,000
115,000
120,000
60,000
90,000
120,000
.14
.14
.14
.14
72,000
115,000
120,000
—
—
—
TFF
115,000
150,000
150,000
150,000
TFD
TFE
TFF
TFL
TFM
TFN
80
—
25-55
55-85
—
20-50
30-60
80
25-55
35-65
50-80
20-50
30-60
40-70
80
25-55
35-65
50-80
20-50
30-60
40-70
80
25-55
35-65
50-80
—
—
—
3.5
3.5
1
3.5
3.5
1
3.5
3.5
1
3.5
3.5
1
0.180-0.487
5.0-13.5
0.180-0.487
5.0-13.5
0.180-0.487
5.0-13.5
0.180-0.487
5.0-13.5
1/
2
1/
2
1/
2
1/
2
HIGH-PRESSURE SWITCH (psig)
Standard Compressor
Internal Relief (Differential)
Cutout
Reset (Auto.)
LOSS-OF-CHARGE (LOWPRESSURE SWITCH) (psig)
Cutout
Reset (Auto.)
FREEZE PROTECTION
THERMOSTAT (F)
Opens
Closes
OUTDOOR-AIR INLET SCREENS
Quantity...Size (in.)
RETURN-AIR FILTERS
Quantity...Size (in.)
Al
—
Bhp —
Cu —
450 ± 50
500 ± 50
428
320
428
320
7±3
22 ± 7
30 ± 5
45 ± 5
Cleanable
1...20 x 24 x 1
Throwaway
2...16 x 25 x 2
LEGEND
Aluminum
Brake Horsepower
Copper
††Rollout switch lockout is manually reset by interrupting power to unit or
resetting thermostat.
|| Single-phase units have a single-stage gas valve. The heating input values
are as follows:
48TFF004, 115,000 Btuh
48TFF005, 150,000 Btuh
48TFF006, 150,000 Btuh
NOTE: High-static motor not available on single-phase units.
*Evaporator coil fin material/condenser coil fin material. Contact your local
representative for details about coated fins.
†Weight of 14-in. roof curb.
**Single phase/three-phase.
6
UNIT
48TFN,TFM,TFF,TFE004
48TFN,TFM,TFL,TFF,TFE,TFD005
48TFN,TFM,TFL,TFF,TFE,TFD006
48TFF,TFE,TFD007
A
B
C
D
E
F
3.
DURABLADE
ECONOMIZER WEIGHT
Lbs
Kg
34
15.4
ECONOMI$ER
WEIGHT
Lbs
Kg
47
21.3
(A)
CORNER WEIGHT
Lbs
Kg
140
63.5
142
64.4
150
68.0
165
74.8
(B)
CORNER WEIGHT
Lbs
Kg
105
47.6
106
48.1
115
52.2
136
61.7
(C)
CORNER WEIGHT
Lbs
Kg
159
72.1
162
73.5
160
72.6
200
90.7
CONNECTION SIZES
13/8″ Dia. [35] Field Power Supply Hole
2″ Dia. [51] Power Supply Knockout
21/2″ Dia. [64] Power Supply Knockout
7/ ″ Dia. [22] Field Control Wiring Hole
8
3/ ″-14 NPT Condensate Drain
4
1/ ″-14 NPT Gas Connection
2
NOTES:
1. Dimensions in [
2.
STD UNIT
WEIGHT
Lbs
Kg
460
209
470
213
490
222
565
256
] are in millimeters.
Center of Gravity.
Direction of Airflow.
7
4. On vertical discharge units, ductwork to be attached to accessory
roof curb only. For horizontal discharge units, field-supplied flanges
should be attached to horizontal discharge openings, and all ductwork should be attached to the flanges.
5. Minimum clearance (local codes or jurisdiction may prevail):
a. Between unit, flue side and combustible surfaces, 36 inches.
b. Bottom of unit to combustible surfaces (when not using curb)
1 inch. Bottom of base rail to combustible surfaces (when not
using curb) 0 inches.
c. Condenser coil for proper airflow, 36 in. one side, 12 in. the other.
The side getting the greater clearance is optional.
d. Overhead, 60 in. to assure proper condenser fan operation.
e. Between units, control box side, 42 in. per NEC (National Electrical Code).
f. Between unit and ungrounded surfaces, control box side, 36 in.
per NEC.
g. Between unit and block or concrete walls and other grounded surfaces, control box side, 42 in. per NEC.
h. Horizontal supply and return end, 0 inches.
6. With the exception of the clearance for the condenser coil and combustion side as stated in Note 5a, b, and c, a removable fence or barricade requires no clearance.
7. Units may be installed on combustible floors made from wood or
Class A, B, or C roof covering material if set on base rail.
8. The vertical center of gravity is 1′-6″ [457] up from the bottom of the
base rail.
Fig. 6 — Base Unit Dimensions
(D)
CORNER WEIGHT
Lbs
Kg
56
25.4
60
27.2
65
29.5
64
29.0
“A”
PANEL
LENGTH
1′-103/8″ [568.0]
1′-103/8″ [568.0]
1′-03/8″ [315.0]
1′-03/8″ [315.0]
BOTTOM POWER CHART,
THESE HOLES REQ’D FOR USE
WITH ACCESSORY PACKAGES —
CRBTMPWR001A00, 3A00 (1/2″, 3/4″)
THREADED
CONDUIT
SIZE
1/ ″
2
3/ ″
4
1/ ″ FPT
2
WIRE
USE
24 V
Power
Gas
REQ’D HOLE
SIZES
(Max.)
7/ ″ [22.2]
8
11/8″ [28.4]
11/4″ [31.8]
Step 7 — Make Electrical Connections
Unit cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of personal injury if
an electrical fault should occur. This ground may consist of
electrical wire connected to unit ground lug in control compartment, or conduit approved for electrical ground when
installed in accordance with NEC (National Electrical
Code), ANSI/NFPA, latest edition, and local electrical
codes. Do not use gas piping as an electrical ground. Failure to follow this warning could result in the installer being
liable for personal injury of others.
BLOWER
ACCESS
PANEL
Fig. 7 — Flue Hood Details
FIELD POWER SUPPLY — All units except 208/230-v
units are factory wired for the voltage shown on the nameplate.
If the 208/230-v unit is to be connected to a 208-v power supply, the transformer must be rewired by moving the black wire
with the 1/4-in. female space connector from the 230-volt connection and moving to the 200-volt 1/4-in. male terminal on the
primary side of the transformer.
Refer to unit label diagram for additional information. Pigtails are provided for field wire connections. Use factorysupplied splices or UL (Underwriters’ Laboratories) approved
copper/aluminum connector.
When installing units, provide a disconnect per the NEC.
All field wiring must comply with NEC and local
requirements.
Install field wiring as follows:
1. Install conduit through side panel openings. For units
without electric heat, install conduit between disconnect
and control box.
2. Install power lines to terminal connections as shown in
Fig. 9.
Voltage to compressor terminals during operation must be
within voltage range indicated on unit nameplate (see Table 2).
On 3-phase units, voltages between phases must be balanced
within 2% and the current within 10%. Use the formula shown
in the legend for Table 2, Note 2 to determine the percent of
voltage imbalance. Operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components. Such operation would invalidate
any applicable Carrier warranty.
FIELD CONTROL WIRING — Install a Carrier-approved
accessory thermostat assembly according to installation
instructions included with the accessory. Locate thermostat assembly on a solid wall in the conditioned space to sense average temperature in accordance with thermostat installation instructions. Connect thermostat wires to terminal board.
Route thermostat cable or equivalent single leads of colored
wire from subbase terminals through connector on unit to lowvoltage connections (shown in Fig. 10).
NOTE: For wire runs up 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 larger than no. 18 AWG cannot be directly connected to
LEGEND
NFGC — National Fuel Gas Code
*Field supplied.
NOTE: Follow all local codes.
SPACING OF SUPPORTS
STEEL PIPE
NOMINAL DIAMETER
(in.)
1/
2
3/ or 1
4
11/4 or larger
X
DIMENSIONS
(feet)
6
8
10
Fig. 8 — Gas Piping Guide (With Accessory
Thru-the-Curb Service Connections)
the thermostat and will require a junction box and splice at the
thermostat.
Pass the control wires through the hole provided in the corner post; then feed wires through the raceway built into the
corner post to the 24-v barrier located on the left side of the
control box. See Fig. 11. The raceway provides the UL required clearance between high- and low-voltage wiring.
HEAT ANTICIPATOR SETTINGS — Set heat anticipator
settings at .14 amp for the first stage and .14 amp for secondstage heating, when available.
8
C
COMP
NEC
TB
—
—
—
—
208/230-1-60
208/230-3-60
460-3-60
(SIZE 007 ONLY)
575-3-60
(SIZE 007 ONLY)
208/230-3-60
575-3-60, 460-3-60
(SIZES 004-006)
LEGEND
Contactor
Compressor
National Electrical Code
Terminal Block
Fig. 9 — Power Wiring Connections
RACEWAY
AHA
LOW VOLTAGE
CONNECTIONS
INTEGRATED GAS UNIT
CONTROLLER (IGC)
LEGEND
— Adjustable Heat Anticipator
Field Wiring
Factory Wiring
NOTES:
1. Connect Y2 when unit is equipped with an economizer.
2. Connect W2 when unit is equipped with two stages of heat.
HOLE IN END PANEL (HIDDEN)
Fig. 10 — Low-Voltage Connections
Fig. 11 — Field Control Wiring Raceway
9
Table 2 — Electrical Data
UNIT
48TF
NOMINAL
V-Ph-Hz
208/230-1-60
208/230-3-60
004
460-3-60
575-3-60
208/230-1-60
208/230-3-60
005
460-3-60
575-3-60
208/230-1-60
208/230-3-60
006
460-3-60
575-3-60
208/230-3-60
460-3-60
007
575-3-60
IFM
TYPE
Std
Alt
Std
Alt
High
Std
Alt
High
Std
Alt
High
Std
Alt
Std
Alt
High
Std
Alt
High
Std
Alt
High
Std
Alt
Std
Alt
High
Std
Alt
High
Std
Alt
High
Std
High
Std
High
Std
High
VOLTAGE
RANGE
Min Max
COMPRESSOR
(ea)
RLA
LRA
187
254
16.2
96.0
187
254
10.2
75.0
414
508
4.4
40.0
518
632
3.7
31.0
187
254
23.3
118.0
187
254
15.4
90.0
414
508
8.3
45.0
518
632
6.4
36.0
187
254
28.8
147
187
254
16.3
114
414
508
7.4
64
518
632
6.2
62
187
254
23.6
146
414
508
10.6
73
518
632
8.5
58.4
OFM
IFM
(ea)
FLA
Qty Hp FLA
3.5
1/
1
1.4
4
4.9
3.5
1/
1
1.4
4.9
4
5.2
1.3
1/
0.8
2.1
1
4
2.6
1.3
1/
0.8
2.1
1
4
2.6
3.5
1/
1
1.4
4
4.9
3.5
1/
1
1.4
4.9
4
5.2
1.8
1/
0.8
2.1
1
4
2.6
1.8
1/
0.8
2.1
1
4
2.6
5.9
1/
1
1.4
4
6.6
5.9
1/
1
1.4
5.2
4
7.5
3.1
1/
0.8
2.6
1
4
3.4
3.1
1/
0.8
3.0
1
4
3.4
5.2
1/
1
1.4
4
7.5
2.6
1/
1
0.6
4
3.4
2.6
1
1
/4 0.6
3.4
LEGEND
FLA
HACR
IFM
LRA
MCA
MOCP
NEC
OFM
RLA
—
—
—
—
—
—
—
—
—
COMBUSTION
FAN MOTOR
FLA
.6
.6
.3
.3
.6
.6
.3
.3
.6
.6
.3
.3
.6
.3
.3
POWER
SUPPLY
MCA
MOCP†
24.5/24.5
30/30
26.6/26.6
35/35
17.7/17.7
25/25
19.1/19.1
25/25
19.4/19.4
25/25
7.6
15
8.4
15
8.9
15
6.3
15
6.9
15
7.3
15
34.0/34.0
40/40
35.4/35.4
45/45
24.2/24.2
30/30
25.6/25.6
30/30
25.9/25.9
30/30
13.0
20
13.3
20
13.8
20
10.1
15
10.3
15
10.7
15
43.3/43.3
60/60
44.0/44.0
60/60
27.3/27.3
35/35
26.6/26.6
35/35
28.9/28.9
35/35
13.2
20
12.7
15
13.5
20
10.9
15
10.5
15
12.6
15
30.2/30.2
35/35
32.5/32.5
40/40
15.4
20
16.1
20
12.3
15
12.9
20
DISCONNECT
SIZE*
FLA
LRA
23/23
106/106
26/26
111/111
17/17
85/85
19/19
90/90
19/19
109/109
7
48/48
8
48/48
9
57/57
7
35
8
37
7
45
32/32
129/129
34/34
133/133
23/23
101/101
25/25
105/105
25/25
124/124
13
51
13
53
13
62
10
41
11
42
10
50
42/42
161/161
42/42
184/184
29/29
128/128
26/26
148/148
29/29
174/174
13
72
12
81
13
94
11
58
10
66
11
76
29/29
180/180
32/32
205/205
15
90
16
103
13
72
14
82
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
AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage =
=
*Used to determine minimum disconnect per NEC.
†Fuse or HACR circuit breaker.
452 + 464 + 455
3
1371
3
= 457
Determine maximum deviation from average voltage.
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
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
of voltage imbalance.
% Voltage Imbalance
max voltage deviation from average voltage
= 100 x
average voltage
Maximum deviation is 7 v.
Determine percent of voltage imbalance.
7
% Voltage Imbalance = 100 x
457
= 1.53%
This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.
IMPORTANT: If the supply voltage phase imbalance is more
than 2%, contact your local electric utility company immediately.
10
Step 8 — Make Outdoor-Air Adjustments and
Install Outdoor-Air Hood
5. Place hood on front of outdoor air opening panel. See
Fig. 13 for hood details. Secure top of hood with the
4 screws removed in Step 3. See Fig. 14.
6. Remove and save 6 screws (3 on each side) from sides of
the manual outdoor-air damper.
7. Align screw holes on hood with screw holes on side of
manual outdoor-air damper. See Fig. 13 and 14. Secure
hood with 6 screws from Step 6.
8. Adjust minimum position setting of the damper blade by
adjusting the manual outdoor-air adjustment screws on
the front of the damper blade. See Fig. 12. Slide blade
vertically until it is in the appropriate position determined
by Fig. 15. Tighten screws.
9. Remove and save screws currently on sides of hood. Insert screen. Secure screen to hood using the screws. See
Fig. 14.
MANUAL OUTDOOR-AIR DAMPER — The outdoor-air
hood and screen are attached to the basepan at the bottom of
the unit for shipping.
Assembly:
1. Determine quantity of ventilation required for building.
Record amount for use in Step 8.
2. Remove and save outdoor air opening panel and screws.
See Fig. 12.
3. Separate hood and screen from basepan by removing the
4 screws securing them. Save all screws.
4. Replace evaporator coil access panel.
OUTDOOR
AIR OPENING
PANEL
3 SCREWS
(SIDE)
Fig. 14 — Outdoor-Air Damper with
Hood Attached
Fig. 12 — Damper Panel with Manual Outdoor-Air
Damper Installed
Fig. 15 — Position Setting
Fig. 13 — Outdoor-Air Hood Details
11
OPTIONAL DURABLADE ECONOMIZER — The
optional economizer hood assembly is packaged and shipped in
the filter section. Damper blades and control boards are installed at the factory and the economizer is shipped in the vertical discharge position.
NOTE: Horizontal discharge block-off plate is shipped with
the air hood package. If unit is to be used for vertical discharge
application, discard this plate.
Assembly:
1. Determine if ventilation air is required in building. If so,
determine minimum amount to be supplied by each unit
and record quantity of ventilation air needed for use in
Step 6.
2. Remove filter access panel by raising panel and swinging
panel outward. Panel is now disengaged from track and
can be removed. No tools are required to remove filter
access panel. Remove outdoor-air opening panel. Save
panels and screws. See Fig. 16. Remove optional
outdoor-air damper hood package from filter section.
3. Assemble outdoor-air hood top and side plates as shown
in Fig. 17. Install seal strips on hood top and sides. Put
aside screen retainer and screws for later assembly. Do
not attach hood to unit at this time.
4. To convert to horizontal discharge application:
a. Rotate economizer 90 degrees until the
economizer motor faces the condenser section
(see Fig. 18).
b. Rotate the barometric relief damper hinge
90 degrees. Barometric relief damper should open
vertically to operate properly.
c. Install horizontal discharge block-off plate over
the opening on the access panel. (Block-off plate
MUST be installed before installing hood assembly.) See Fig. 19.
5. Insert economizer plug into economizer harness. Remove
tape from barometric relief damper. See Fig. 20.
6. If ventilation air is not required, proceed to Step 7. If ventilation air is required, determine minimum position setting for required airflow. See Fig. 21. Adjust minimum
position setting by adjusting the screws on the position
setting bracket. Slide bracket until the top screw is in the
position determined by Fig. 21. Tighten screws.
7. Remove tape from outdoor-air thermostat (OAT). Fasten
OAT to inside of hood using screws and speed clips provided. See Fig. 22. Make sure OAT terminals are positioned up.
8. Replace outdoor-air opening panel using screws from
Step 2. Replace filter access panel. Ensure the filter access panel slides along the tracks and is securely engaged.
9. Fasten hood top and side plate assembly (Fig. 17) to
outdoor-air opening panel with screws provided.
10. Place knob supplied with economizer on OAT. See
Fig. 22. Set for 3° F below indoor room thermostat setting. If accessory enthalpy control (EC) is used in place of
OAT, see instructions shipped with EC for installation
and adjustment. See Fig. 22.
11. Connect OAT per Fig. 23.
12. Slide outdoor-air inlet screen into screen track on hood
side plate. While holding screen in place, fasten screen retainer to hood using screws provided.
NOTE: Refer to Fig. 24 for economizer barometric relief
damper characteristics.
Fig. 16 — Typical Access Panel Locations
Fig. 17 — Outdoor-Air Hood Details
ECONOMIZER
CONTROL
BOARD
BAROMETRIC
RELIEF
DAMPER
ECONOMIZER
PLUG
SHIPPING
SCREW
ECONOMIZER
MOTOR
Fig. 18 — Horizontal Durablade Economizer
Installation
12
BLOCK-OFF PLATE
Fig. 19 — Horizontal Discharge Block-Off Plate
U-SHAPED
HOLE
(NOT
SHOWN)
ECONOMIZER
CONTROL
ECONOMIZER
BOARD
PLUG
ECONOMIZER
MOTOR
TOP
SCREW
WIRING
HARNESS
BAROMETRIC
RELIEF DAMPER
SHIPPING
SCREW
POSITION SETTING
BRACKET
Fig. 20 — Durablade Economizer Installed in Unit
ENTHALPY
CONTROL
REV. B
B
C
MINIMUM
POSITION
SO
D
TR
S
OPEN
4
2
5
3
P1
T1
1
P
T
HOOD
TR
C
24VAC
2
TR1
1
3 mA MIN. AT 11 VDC
B A
ENTHALPY CONTROL
3
D
CW–SETPOINTS–CCW
198818A
RUSH AT 24VAC
CONTACTS SHOWN IN HIGH ENTHALPY
OR UNPOWERED STATE
°F
CONTACT RATINGS: 1.5A RUN, 3.5A IN
OUTDOOR TEMP.
% 90
H
DAMPER
U 70
CLOSED
M
I 60
DAMPER
D
OPEN
I 30
T
Y 10
50 55 60 65 70 75 80 85
97-3672
REV.
EXAMPLE:
Given — Negative Pressure . . . . . . . . . . . . . . . . . . . . . . . 0.2 in. wg
Outdoor Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 900 cfm
Determine — Setting = 5 in.
Fig. 22 — Outdoor-Air Thermostat/
Enthalpy Control Installation
Fig. 21 — Durablade Economizer
Minimum Position Setting
13
ECONOMI$ER
PLUG
CONTROLLER
GEAR-DRIVEN
DAMPER
LEGEND
OAT — Outdoor-Air Thermostat
NOTE: See unit wiring diagram for details.
OUTDOOR AIR
TEMPERATURE
SENSOR
Fig. 23 — Wiring Connections for
Outdoor-Air Thermostat
ACTUATOR
0.90
BAROMETRIC RELIEF DAMPERS
Fig. 25 — EconoMi$er Component Locations
0.80
PRESSURE DROP (in. wg)
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
100
200
300
400
CFM
500
600
700
800
Fig. 24 — Durablade Economizer
Barometric Relief Damper Characteristics
OPTIONAL ECONOMI$ER — See Fig. 25 for EconoMi$er
component locations.
1. To remove the existing unit filter access panel, raise the
panel and swing the bottom outward. The panel is now
disengaged from the track and can be removed. Remove
the indoor coil access panel and discard. See Fig. 26.
If installing an optional Power Exhaust Assembly, refer to
the EconoMi$er Power Exhaust Installation Instructions.
Controller should be mounted in vertical position as
shown in Fig. 25.
2. Assemble the hood assembly as follows:
Remove the EconoMi$er hood from its packaging. Remove shipping brackets holding hood package to
EconoMi$er. Locate the outdoor-air opening panel. See
Fig. 27. Remove hood assembly shipping brackets located on the back (sloped) side of the EconoMi$er assembly.
These brackets are used to retain the hood assembly during shipping only.
3. Installs the 1/8 x 3/4-in. seal strip on the exhaust air hood
side panels and the bottom bracket. Assemble the exhaust
air hood to the outdoor-air opening panel as shown in
Fig. 27, using the screws provided. Do not attach hood
assembly to unit at this time.
4. Install the 1/8 x 3/4-in. seal strip on the outdoor-air hood
top and side panels. Assemble the outdoor-air hood to the
outdoor-air opening panel as shown in Fig. 28, using the
screws provided. Do not attach hood assembly to the unit
at this time.
OUTDOOR-AIR
OPENING PANEL
FILTER ACCESS
PANEL
Fig. 26 — Typical Access Panel Locations
OUTDOOR AIR
OPENING PANEL
EXHAUST AIR
HOOD TOP
SCREEN
RETAINER
SEAL STRIP
EXHAUST AIR
HOOD SIDES
EXHAUST AIR SCREEN
EXHAUST AIR
BOTTOM BRACKET
Fig. 27 — Exhaust Air Hood Assembly
14
5. Slide the outdoor-air inlet screens into the screen track on
the hood side panels. While holding the screens in place,
fasten the screen retainer to the hood using the screws
provided. Repeat the process for the barometric exhaust
air screen. Do not attach completed (Fig. 29) hood assembly to unit at this time.
6. Slide the EconoMi$er assembly into the rooftop unit. See
Fig. 30 and 31.
NOTE: Be sure to engage rear EconoMi$er flange under
tabs in return-air opening of the unit base. See Fig. 30.
7. Install the outdoor-air block-off plate, then secure the
EconoMi$er with the screws provided. See Fig. 31.
8. Remove and discard the 12-pin jumper plug from the unit
wiring harness located in the upper left corner and insert
the EconoMi$er plug into the unit wiring harness. Refer
to wiring diagram Fig. 32 and 33. Also refer to Fig. 34 if
installing an accessory power exhaust.
9. Install the complete hood assembly on the unit and secure
using the screws provided.
10. Remove the indoor fan motor access panel. See Fig. 35.
11. Mount the supply-air temperature sensor to the lower left
portion of the indoor blower housing with the two (2)
screws provided (see Fig. 36). Connect the violet and
pink wires to the corresponding connections on the
supply-air temperature sensor. Replace the indoor fan
motor access panel.
OUTDOOR AIR
OPENING
PANEL
SEAL STRIP
Fig. 29 — Completed Hood Assembly
UNIT FILTER
RACK
ECONOMI$ER
UNIT BASE
ECONOMI$ER REAR
FLANGE
Fig. 30 — Rear EconoMi$er Flange Installation
OUTDOOR AIR
HOOD TOP
WIRING
HARNESS
SCREEN
RETAINER
SEAL STRIP
ECONOMI$ER CLIP
HVAC UNIT
OUTDOOR AIR
INLET
SCREENS
OUTDOOR
AIR
BLOCK-OFF
PLATE
ASSEMBLED
EXHAUST HOOD
OUTDOOR AIR
HOOD SIDES
Fig. 28 — Outdoor-Air Hood Assembly
Fig. 31 — EconoMi$er Installed
15
OAT
RAT
LEGEND
— Outdoor-Air Temperature
— Return-Air Temperature
Fig. 32 — EconoMi$er Wiring
ECONOMI$ER
CONTROLLER
BROWN
VIOLET
OAT
WHITE
RED
COM
OAH
-15 V
RAT
COM
RAH
+15 V
CO2 (+)
CO2 COM
DAT
COM
REM POT
COM
LED
COM
BROWN
VIOLET
WHITE
RED
TEMP
TEMP
COM
OUT
PWR
OUTDOOR
AIR
SENSOR
TEMP
TEMP
COM
OUT
PWR
RETURN
AIR
SENSOR
CO2 SENSOR
24
V+
COM VAC
SUPPLY AIR
TEMPERATURE SENSOR
PINK
TEMP
VIOLET
TEMP
Fig. 33 — EconoMi$er Sensor Wiring
16
RED
GRAY
H1
H2
X4
X2 X3
RED YEL BLU GRAY
HT01AH850
(460 VAC)
HT01AH859
(575 VAC)
TO FUSED
DISCONNECT
X1
H1
H3 H2
H4
X4
X2 X3
X1
SECONDARY
230VAC
SECONDARY
230VAC
FIELD SUPPLIED
WIRING
BLACK
OR
BLACK
COMPRESSOR 1
CONTACTOR
11
21
13
23
LT. BLUE
230VAC
BROWN
FAN 1
C1
GREEN/
YELLOW
4-PIN
CONNECTOR
PLUG
2 x 4 IN.
HANDY BOX
BLACK L1
6
9
2
5
8
1
4
7
B
R1
24 VAC
3
4
1
L2
2
GND
3
4
230 VAC
1 PHASE
3-PIN
CONNECTOR
PLUG
A
BLUE
L1
1
BLUE
L2 2
GREEN GND
3
BLACK
ORANGE
1
YELLOW
2
BROWN
BLACK
BLACK
BLUE
LT. BLUE
GREEN
BROWN
FAN 2
C1
GREEN/
YELLOW
3
6
9
2
5
8
1
4
7
B
BLACK
R2
24 VAC
A
BLUE
Fig. 34 — Wiring Diagram for Power Exhaust System
CONTROL BOX/BURNER
ACCESS PANEL
INDOOR FAN MOTOR
ACCESS PANEL AND BLOWER
Fig. 35 — Typical Access Panel Locations (Standard Efficiency Unit Shown)
17
3
Ventilation Air (Minimum Position Set Up) — If ventilation
air is not required, proceed to Step 5. If ventilation air is required, perform the following:
1. The indoor fan must be on to set the ventilation air.
Either put the thermostat in the continuous fan mode or
jumper the R and G terminals at the rooftop unit connection board.
2. Locate the minimum position (MIN POS) potentiometer. Turn the potentiometer full CCW to fully close the
outdoor air dampers. Turn the potentiometer gradually
clockwise (CW) to the desired position. See Fig. 37.
3. Replace the filter access panel. See Fig. 26. Ensure the
filter access panel slides along the tracks and is
securely engaged.
4. Calculate the minimum airflow across the
EconoMi$er.
a. Calculate % of outside air using the following
formula.
% Outdoor air through EconoMi$er
Mixture Temp – Return Air Temp
% Outdoor air =
Outdoor Temp – Return Air Temp
SUPPLY AIR
TEMPERATURE
SENSOR
MOUNTING
LOCATION
SUPPLY AIR
TEMPERATURE
SENSOR
Fig. 36 — Supply-Air Sensor Placement
CO2 Control Setup — If a CO2 sensor is not being used, proceed to the next section. If a CO2 sensor is being used, perform
the following:
1. Determine the value at which you want the minimum
position of the dampers to begin opening to allow a
greater amount of outdoor air to enter. The range is
800 to 1,400 ppm.
2. Locate the CO2 SP (PPM) potentiometer and adjust to
the desired set point. See Fig. 37.
b. Divide total CFM by percentage outdoor air, this
gives outdoor air volume in CFM.
5. Turn on base unit power.
NOTE: The EconoMi$er begins operation three minutes after power up.
Mechanical Cooling Lockout — Determine the outdoor-air
temperature at which you want the mechanical cooling (compressors) to be disabled. Locate the mechanical cooling lockout
(MECH CLG LOCKOUT) potentiometer. To disable this feature, turn the potentiometer counterclockwise (CCW) to the
OFF position. Otherwise, set the value between 10 and 60 F.
Mechanical cooling will not operate when the outdoor air temperature is below this value. See Fig. 37.
Personal Injury Hazard. Avoid possible injury by keeping fingers away from damper blades.
6. See Fig. 38
characteristics.
for
barometric
relief
damper
Dry Bulb Changeover Set Up — Determine the dry bulb
changeover set point from Table 3. The settings are A, B, C and
D. Locate the ECON SP potentiometer and set the dry bulb
changeover set point. See Fig. 37. When the OAT is above this
set point, the damper is limited to minimum position setting.
Table 3 — Changeover Set Points
A
73
27
B
69
25
C
66
24
D
63
22
2
2
2
2
1
1
1
1
Fig. 37 — EconoMi$er Control Adjustment
Potentiometers (Factory Settings)
STATIC PRESSURE (IN. WG)
SETTINGS
Dry Bulb (°F)
Single Enthalpy* (Btu/lb)
Differential Temperature*
(°F, Not Adjustable)
Differential Enthalpy*
(Btu/lb, Not Adjustable)
*Field-installed accessory.
If a potentiometer fails, its setting will default to the values
in Table 4.
Table 4 — Default Potentiometer Settings
POTENTIOMETER
CO2 SP (PPM)
MECH CLG LOCKOUT
ECON SP
MIN POS (%)
DEFAULT SETTING
1,000
47°
D
20
0.5
0.4
0.3
0.2
0.1
0
0
200
400
600
800 1000 1200 1400 1600
FLOW (CUBIC FEET/MINUTE)
Fig. 38 — Barometric Relief Capacity
18
Step 9 — Adjust Evaporator-Fan Speed — Adjust evaporator-fan rpm to meet jobsite conditions. Table 5
shows fan rpm at motor pulley settings. Table 6 shows motor
performance. See Table 7 for Accessory/FIOP Static Pressure.
Refer to Tables 8-29 to determine fan speed settings.
DIRECT-DRIVE MOTORS — The evaporator-fan motor
factory speed setting is shown on label diagram affixed to base
unit. If other than factory setting is desired, refer to label
diagram for motor reconnection. See Fig. 39 for direct drive
motor location.
BELT-DRIVE MOTORS — Fan motor pulleys are factory
set for speed shown in table 1. See Fig. 40 for belt drive motor
location.
NOTE: Before adjusting fan speed, make sure the new fan
speed will provide an air temperature rise range as shown in
Table 1.
To change fan speed:
1. Shut off unit power supply.
2. Loosen belt by loosening fan motor mounting nuts. See
Fig. 40.
3. Loosen movable pulley flange setscrew (see Fig. 41).
4. Screw movable flange toward fixed flange to increase
speed and away from fixed flange to decrease speed. Increasing fan speed increases load on motor. Do not exceed maximum speed specified in Table 1.
5. Set movable flange at nearest keyway of pulley hub and
tighten setscrew. (See Table 1 for speed change for each
full turn of pulley flange.)
To align fan and motor pulleys:
1. Loosen fan pulley setscrews.
2. Slide fan pulley along fan shaft.
Make angular alignment by loosening motor from
mounting.
To adjust belt tension:
1. Loosen fan motor mounting nuts.
2. Slide motor mounting plate away from fan scroll for
proper belt tension (1/2-in. deflection with one finger).
3. Tighten motor mounting nuts.
4. Adjust bolt and tighten nut to secure motor in fixed
position.
MOTOR MOUNTING
PLATE NUTS
Fig. 40 — Belt Drive Motor Mounting
Fig. 41 — Evaporator-Fan Pulley Adjustment
Fig. 39 — Direct Drive Motor Mounting
19
Table 5 — Fan Rpm at Motor Pulley Settings*
UNIT
48TF
004†
004**
005†
005**
006†
006**
007††
007**
1/
0
1000
1455
1185
1455
1300
1685
1460
1685
2
976
1423
1150
1423
1260
1589
1420
1589
11/2
928
1360
1080
1360
1180
1525
1345
1525
1
952
1392
1115
1392
1220
1557
1380
1557
2
904
1328
1045
1328
1140
1493
1305
1493
MOTOR PULLEY TURNS OPEN
21/2
3
31/2
880
856
832
1297
1265
1233
1010
975
940
1297
1265
1233
1100
1060
1020
1460
1428
1396
1265
1225
1185
1460
1428
1396
*Approximate fan rpm shown.
†Indicates alternate motor and drive package.
4
808
1202
905
1202
980
1364
1150
1364
41/2
784
1170
870
1170
940
1332
1110
1332
5
760
1138
835
1138
900
1300
1070
1300
51/2
—
1107
—
1107
—
—
—
—
6
—
1075
—
1075
—
—
—
—
**Indicates high-static motor and drive package.
††Indicates standard motor and drive package.
Table 6 — Motor Data
UNIT
48TF
EVAPORATOR-FAN
MOTOR
UNIT
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
208/230
460
575
208/230
460
575
208/230
460
575
Standard
Alternate
004
High Static
Standard
Alternate
005
High Static
Standard
Alternate
006
High Static
Standard
007
High Static
MAXIMUM ACCEPTABLE
CONTINUOUS BHP*
MAXIMUM ACCEPTABLE
OPERATING WATTS
0.34
440
1.00
1000
2.40
2120
0.75
850
1.00
1000
2.40
2120
1.20
1340
1.30/2.40†
2120
2.90
2562
2.40
2120
2.90
2562
MAXIMUM
AMP DRAW
2.8
1.3
1.3
4.9
2.1
2.1
6.0
3.0
3.0
3.5
1.8
1.8
4.9
2.1
2.1
6.0
3.0
3.0
5.9
3.2
3.2
10.1/6.7†
3.0
3.0
8.6
3.9
3.9
6.7
3.0
3.0
8.6
3.9
3.9
NOTES:
1. 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.
2. High-static motor not available on single-phase units.
LEGEND
BHP — Brake Horsepower
*Extensive motor and electrical testing on these units ensures that the
full horsepower range of the motors can be utilized with confidence.
Using your fan motors up to the horsepower ratings shown in this table
will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.
†Single phase/three-phase.
Table 7 — Accessory/FIOP Static Pressure* (in. wg) — 48TF004-007
COMPONENT
Durablade Economizer
EconoMi$er
CFM
900
0.05
0.05
1200
0.05
0.09
1400
0.05
0.13
1600
0.05
0.17
LEGEND
FIOP — Factory-Installed Option
1800
0.05
0.22
2000
0.05
0.27
2200
0.05
0.32
2400
0.05
0.39
2600
0.05
0.45
3000
0.05
0.53
*The static pressure must be added to 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.
20
Table 8 — Fan Performance 48TF004 — Vertical Discharge Units, Standard Motor
48TF004 (3 TONS) — STANDARD MOTOR (DIRECT DRIVE)
Low Speed
Airflow
208 V
230, 460, 575 V
(Cfm)
Esp
Bhp
Watts
Esp
Bhp
Watts
0.49
0.21
253
0.50
0.23
277
900
0.42
0.23
270
0.43
0.25
292
1000
0.37
0.24
287
0.38
0.26
307
1100
0.33
0.26
304
0.33
0.27
323
1200
0.27
0.27
321
0.28
0.29
338
1300
0.20
0.29
338
0.23
0.30
354
1400
0.16
0.30
355
0.18
0.31
369
1500
LEGEND
Bhp — Brake Horsepower Input to Fan
Esp — External Static Pressure (in. wg)
FIOP — Factory-Installed Option
High Speed
Esp
0.51
0.43
0.39
0.34
0.28
0.25
0.20
208 V
Bhp
0.26
0.27
0.28
0.29
0.31
0.32
0.33
Watts
307
321
335
349
364
378
392
Esp
0.55
0.51
0.46
0.40
0.34
—
—
230, 460, 575 V
Bhp
Watts
0.31
363
0.32
374
0.33
385
0.34
397
0.34
408
—
—
—
—
2. Extensive motor and electrical testing on these units ensures that
the full range of the motor can be utilized with confidence. Using
your fan motors up to the wattage ratings shown will not result in
nuisance tripping or premature motor failure. Unit warranty will not
be affected. See Table 6 — Motor Data for additional information.
3. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
NOTES:
1. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
Table 9 —Fan Performance 48TF004 — Vertical Discharge Units, Alternate Motor
48TF004 (3 TONS) — ALTERNATE MOTOR (BELT DRIVE)*
External Static Pressure (in. wg)
0.3
0.4
Rpm Bhp Watts Rpm Bhp Watts
805 0.25
249
736
0.22
219
782
0.28
279
835 0.30
298
806
0.30
298
867 0.35
348
843
0.35
348
903 0.41
408
891
0.43
428
942 0.48
477
937
0.51
507
984 0.57
567
985
0.61
607
1029 0.66
656
Rpm
865
900
929
960
991
1032
1073
0.5
Bhp
0.29
0.35
0.40
0.47
0.53
0.62
0.72
Watts
288
348
398
467
527
617
716
Rpm
911
937
964
994
1047
1067
1109
0.6
Bhp
0.34
0.38
0.40
0.50
0.60
0.67
0.77
Watts
338
378
398
497
597
666
766
48TF004 (3 TONS) — ALTERNATE MOTOR (BELT DRIVE)* (cont)
External Static Pressure (in. wg)
Airflow
0.7
0.8
0.9
1.0
(Cfm)
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
957 0.39
388
988 0.43
428
900
1039 0.47
448
1061 0.51
487
992 0.44
438
1000
1039 0.49
487
1061 0.55
507
1088 0.60
547
1100
1013 0.49
487
1068 0.55
547
1091 0.61
577
1109 0.66
607
1200
1045 0.56
557
1090 0.64
637
1109 0.68
647
1156 0.73
676
1300
1075 0.64
637
1122 0.70
696
1152 0.76
716
1190 0.82
756
1400
1110 0.73
726
1160 0.78
766
1181 0.83
806
1237 0.88
845
1500
1150 0.78
816
1190 0.84
855
1225 0.89
895
1271 0.95
945
Rpm
1083
1111
1127
1203
1228
1293
1317
1.1
Bhp
0.54
0.66
0.73
0.81
0.87
0.94
1.00
Watts
527
587
637
706
796
885
995
Rpm
1105
1136
1145
1250
1266
1349
1383
1.2
Bhp
0.58
0.72
0.80
0.86
0.94
0.99
1.05
Watts
567
627
666
736
836
925
1044
Airflow
(Cfm)
900
1000
1100
1200
1300
1400
1500
Rpm
581
644
687
733
754
810
841
0.1
Bhp
0.12
0.19
0.22
0.26
0.29
0.35
0.42
Watts
119
189
219
259
288
348
418
Rpm
673
709
746
785
826
868
911
0.2
Bhp
0.18
0.22
0.26
0.32
0.38
0.45
0.53
Watts
179
219
259
318
378
448
527
LEGEND
Bhp
— Brake Horsepower Input to Fan
FIOP — Factory-Installed Option
Watts — Input Watts to Motor
3. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
4. Maximum continuous bhp is 1.0 and the maximum continuous
watts are 1000. Extensive motor and electrical testing on these
units ensures that the full range of the motor can be utilized with
confidence. Using your fan motors up to the wattage ratings shown
will not result in nuisance tripping or premature motor failure. Unit
warranty will not be affected. See Table 6 — Motor Data for additional information.
5. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
6. Interpolation is permissible. Do not extrapolate.
*Motor drive range is 760 to 1000 rpm. All other rpms require a fieldsupplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2.
indicates field-supplied motor and drive are required.
21
Table 10 — Fan Performance 48TF004 — Vertical Discharge Units, High-Static Motor
48TF004 (3 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)*
External Static Pressure (in. wg)
0.6
Watts
Rpm
Bhp
Watts
Rpm
249
911
0.34
338
988
298
937
0.38
378
1039
348
964
0.40
398
1068
1090
408
994
0.50
497
1122
477
1047
0.60
597
1160
567
1067
0.67
666
1109
0.77
766
1190
656
0.8
Bhp
0.43
0.49
0.55
0.64
0.70
0.84
1.00
Watts
428
487
547
637
696
766
855
Rpm
1061
1086
1109
1156
1190
1237
1271
1.0
Bhp
0.47
0.55
0.61
0.68
0.76
0.85
0.95
Watts
487
547
607
676
756
845
945
48TF004 (3 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)* (cont)
External Static Pressure (in. wg)
Airflow
1.2
1.4
1.6
(Cfm)
Rpm
Bhp
Watts
Rpm
Bhp
Watts
Rpm
Bhp
Watts
Rpm
1105
0.57
567
1140
0.63
622
1170
0.68
674
1198
900
1136
0.63
627
1172
0.69
688
1203
0.75
745
1232
1000
1145
0.67
666
1181
0.73
731
1213
0.80
792
1242
1100
1210
0.74
736
1248
0.81
808
1282
0.88
875
1312
1200
1266
0.84
836
1306
0.92
917
1341
1.00
993
1373
1300
1349
0.93
925
1391
1.02
1015
1492
1.11
1100
1400
1463
1383
1.05
1044
1426
1.15
1146
1500
1465
1.25
1242
1500
1.8
Bhp
0.73
0.80
0.85
0.94
1.07
1.19
1.34
Watts
723
799
850
939
1066
1180
1332
Rpm
1224
1258
1268
1340
1402
1494
1532
2.0
Bhp
0.77
0.86
0.91
1.01
1.14
1.26
1.43
Watts
771
852
906
1000
1136
1257
1419
Airflow
(Cfm)
900
1000
1100
1200
1300
1400
1500
Rpm
673
709
746
785
826
868
911
0.2
Bhp
0.18
0.22
0.26
0.32
0.38
0.45
0.53
Watts
179
219
259
318
378
448
527
Rpm
805
835
867
903
942
984
1029
0.4
Bhp
0.25
0.30
0.35
0.41
0.48
0.57
0.66
LEGEND
Bhp
— Brake Horsepower Input to Fan
FIOP — Factory-Installed Option
Watts — Input Watts to Motor
3. Maximum continuous bhp is 2.4 and the maximum continuous
watts are 2120. Extensive motor and electrical testing on these
units ensures that the full range of the motor can be utilized with
confidence. Using your fan motors up to the wattage ratings shown
will not result in nuisance tripping or premature motor failure. Unit
warranty will not be affected. See Table 6 — Motor Data for additional information.
4. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
5. Interpolation is permissible. Do not extrapolate.
*Motor drive range is 1075 to 1455 rpm. All other rpms require a fieldsupplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
Table 11 — Fan Performance 48TF005 — Vertical Discharge Units, Standard Motor
48TF005 (4 TONS) — STANDARD MOTOR (DIRECT DRIVE)
Low Speed
Airflow
208
V
230, 460, 575 V
(Cfm)
Esp
Bhp
Watts
Esp
Bhp
Watts
0.68
0.41
458
0.74
0.45
506
1200
0.61
0.42
471
0.67
0.46
521
1300
0.53
0.45
503
0.59
0.49
556
1400
0.45
0.47
536
0.51
0.52
593
1500
0.36
0.49
557
0.42
0.54
616
1600
0.26
0.52
584
0.32
0.57
646
1700
0.15
0.54
610
0.22
0.60
674
1800
0.04
0.56
629
0.11
0.62
696
1900
—
—
—
—
—
—
2000
LEGEND
Bhp — Brake Horsepower Input to Fan
Esp — External Static Pressure (in. wg)
FIOP — Factory-Installed Option
High Speed
Esp
0.74
0.66
0.59
0.52
0.45
0.37
0.30
0.23
0.16
208 V
Bhp
0.51
0.52
0.54
0.56
0.58
0.60
0.62
0.64
0.66
Watts
572
589
616
631
654
678
698
720
744
Esp
0.85
0.78
0.70
0.63
0.56
0.48
0.41
0.34
0.26
230, 460, 575 V
Bhp
Watts
0.56
632
0.58
651
0.60
681
0.62
698
0.64
723
0.66
750
0.68
772
0.70
796
0.73
823
2. Extensive motor and electrical testing on these units ensures that
the full range of the motor can be utilized with confidence. Using
your fan motors up to the wattage ratings shown will not result in
nuisance tripping or premature motor failure. Unit warranty will not
be affected. See Table 6 — Motor Data for additional information.
3. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
NOTES:
1. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
22
Table 12 — Fan Performance 48TF005 — Vertical Discharge Units, Alternate Motor
48TF005 (4 TONS) — ALTERNATE MOTOR (BELT DRIVE)*
Airflow
(Cfm)
1200
1300
1400
1500
1600
1700
1800
1900
2000
0.1
Bhp Watts Rpm
0.20 210
665
0.24 252
699
0.30 315
735
0.35 368
770
0.42 441
835
0.49 515
873
0.58 609
881
0.67 704
919
0.77 809
958
Rpm
596
633
672
711
751
791
831
872
913
0.2
Bhp Watts Rpm
0.25 263
722
0.30 315
754
0.36 378
788
0.42 441
822
0.49 515
871
0.57 599
907
0.66 693
929
0.75 788
965
0.86 904 1002
External Static Pressure (in. wg)
0.3
0.4
Bhp Watts Rpm Bhp Watts Rpm
0.31 320
779 0.36
378
872
0.36 378
809 0.42
441
902
0.42 441
840 0.48
504
933
0.49 510
873 0.55
578
963
0.56 588
907 0.63
662
993
0.65 678
941 0.72
757 1024
0.74 772
976 0.81
851 1057
0.84 877 1011 0.92
967 1091
0.95 993 1046 1.03 1082 1125
0.6
Bhp Watts Rpm
0.48
504
915
0.55
578
943
0.62
651
972
0.69
725 1002
0.77
787 1033
0.87
889 1064
0.97
991 1095
1.08 1104 1127
1.21 1237 1160
0.7
Bhp Watts Rpm
0.54
567
957
0.61
641
984
0.69
720 1011
0.77
804 1041
0.85
869 1072
0.96
976 1103
1.06 1078 1132
1.17 1191 1162
1.30 1323 1195
0.8
Bhp Watts
0.60
630
0.67
704
0.75
788
0.84
858
0.93
950
1.04 1063
1.14 1165
1.25 1277
1.38 1410
1.4
Bhp Watts Rpm
0.80
935 1185
0.94
988 1219
1.12 1071 1257
1.27 1215 1295
1.40 1339 1326
1.53 1463 1354
1.67 1597 1381
1.81 1731 1408
1.97 1884 1436
1.6
Bhp Watts Rpm
0.88
965 1331
1.00
999 1268
1.17 1105 1307
1.37 1294 1339
1.54 1454 1376
1.70 1605 1407
1.85 1747 1436
2.00 1889 1463
2.16 2040 1489
1.8
Bhp Watts
0.99 1000
1.10 1029
1.25 1190
1.43 1350
1.65 1558
1.84 1738
2.02 1907
2.19 2068
2.36 2229
48TF005 (4 TONS) — ALTERNATE MOTOR (BELT DRIVE)* (cont)
Airflow
(Cfm)
1200
1300
1400
1500
1600
1700
1800
1900
2000
Bhp
FIOP
Watts
Rpm
993
1021
1049
1077
1107
1137
1167
1197
1229
0.9
Bhp Watts Rpm
0.65
678 1028
0.74
772 1058
0.82
837 1086
0.92
922 1113
1.00
998 1141
1.12 1128 1171
1.23 1239 1202
1.35 1360 1232
1.48 1491 1262
1.0
Bhp Watts Rpm
0.69
725 1056
0.80
841 1090
0.89
885 1120
0.99
985 1147
1.09 1084 1174
1.20 1194 1203
1.32 1313 1233
1.45 1442 1263
1.58 1572 1294
External Static Pressure (in. wg)
1.1
1.2
Bhp Watts Rpm Bhp Watts Rpm
0.72
751 1083 0.74
778 1134
0.85
888 1121 0.89
935 1171
0.96
950 1153 1.00
976 1210
1.06 1054 1180 1.13 1081 1241
1.17 1134 1207 1.25 1196 1269
1.29 1278 1235 1.37 1310 1296
1.41 1398 1263 1.49 1425 1323
1.54 1532 1294 1.63 1559 1351
1.68 1671 1325 1.78 1702 1362
LEGEND
— Brake Horsepower Input to Fan
— Factory-Installed Option
— Input Watts to Motor
3. Values include losses for filters, unit casing, and wet coils. See Table 7
for accessory/FIOP static pressure information.
4. Maximum continuous bhp is 1.0 and the maximum continuous watts are
1000. Extensive motor and electrical testing on these units ensures that
the full range of the motor can be utilized with confidence. Using your
fan motors up to the wattage ratings shown will not result in nuisance
tripping or premature motor failure. Unit warranty will not be affected.
See Table 6 — Motor Data for additional information.
5. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
6. Interpolation is permissible. Do not extrapolate.
*Motor drive range is 835 to 1185 rpm. All other rpms require a field-supplied
drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2.
indicates field-supplied motor and drive are required.
Table 13 — Fan Performance 48TF005 — Vertical Discharge Units, High-Static Motor
48TF005 (4 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)*
Airflow
(Cfm)
1200
1300
1400
1500
1600
1700
1800
1900
2000
Rpm
665
699
735
770
835
873
881
919
958
0.2
Bhp
0.25
0.30
0.36
0.42
0.49
0.57
0.66
0.75
0.86
Watts
263
315
378
441
515
599
693
788
904
Rpm
779
809
840
873
907
941
976
1011
1046
0.4
Bhp
0.36
0.42
0.48
0.55
0.63
0.72
0.81
0.92
1.03
External Static Pressure (in. wg)
0.6
Watts
Rpm
Bhp
Watts
Rpm
378
872
0.48
504
957
441
902
0.55
578
984
504
933
0.62
651
1011
578
963
0.69
725
1041
662
993
0.77
787
1072
757
1024
0.87
889
1103
851
1057
0.97
991
1132
967
1091
1.08
1104
1162
1082
1125
1.21
1237
1195
0.8
Bhp
0.60
0.67
0.75
0.84
0.93
1.04
1.14
1.25
1.38
Watts
630
704
788
858
950
1063
1165
1277
1410
Rpm
1028
1058
1086
1113
1141
1171
1202
1232
1262
1.0
Bhp
0.69
0.80
0.89
0.99
1.09
1.20
1.32
1.45
1.58
Watts
725
841
885
985
1084
1194
1313
1442
1572
1.8
Bhp
0.99
1.10
1.25
1.43
1.65
1.84
2.02
2.19
2.36
Watts
1000
1029
1190
1350
1558
1738
1907
2068
2229
Rpm
1374
1309
1349
1382
1420
1452
1482
—
—
2.0
Bhp
1.09
1.21
1.37
1.57
1.81
2.02
2.22
—
—
Watts
1083
1203
1367
1564
1805
2013
2210
—
—
48TF005 (4 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)* (cont)
Airflow
(Cfm)
1200
1300
1400
1500
1600
1700
1800
1900
2000
Bhp
FIOP
Watts
Rpm
1083
1121
1153
1180
1207
1235
1263
1294
1325
1.2
Bhp
0.74
0.89
1.00
1.13
1.25
1.37
1.49
1.63
1.78
Watts
778
935
967
1081
1196
1310
1425
1559
1702
Rpm
1134
1171
1210
1241
1269
1296
1323
1351
1362
1.4
Bhp
0.80
0.94
1.12
1.27
1.40
1.53
1.67
1.81
1.97
External Static Pressure (in. wg)
1.6
Watts
Rpm
Bhp
Watts
Rpm
935
1185
0.88
965
1331
988
1219
1.00
999
1268
1071
1257
1.17
1105
1307
1215
1295
1.37
1294
1339
1339
1326
1.54
1454
1376
1463
1354
1.70
1605
1407
1597
1381
1.85
1747
1436
1731
1408
2.00
1889
1463
1894
1436
2.16
2040
1489
3. Maximum continuous bhp is 2.4 and the maximum continuous watts are
2120. Extensive motor and electrical testing on these units ensures that
the full range of the motor can be utilized with confidence. Using your
fan motors up to the wattage ratings shown will not result in nuisance
tripping or premature motor failure. Unit warranty will not be affected.
See Table 6 — Motor Data for additional information.
LEGEND
— Brake Horsepower Input to Fan
— Factory-Installed Option
— Input Watts to Motor
*Motor drive range is 1075 to 1455 rpm. All other rpms require a fieldsupplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. Values include losses for filters, unit casing, and wet coils. See Table 7
for accessory/FIOP static pressure information.
4. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
5. Interpolation is permissible. Do not extrapolate.
23
Table 14 — Fan Performance 48TF006 — Vertical Discharge Units, Standard Motor
48TF006 (5 TONS) — STANDARD MOTOR (DIRECT DRIVE)
Low Speed
Airflow
208
V
230,460,575 V
(Cfm)
Esp
Bhp Watts Esp
Bhp Watts Esp
0.69
0.67
750
1.01
0.71
791
1.00
1500
0.49
0.70
780
0.85
0.74
824
0.85
1600
0.29
0.73
810
0.70
0.77
857
0.70
1700
0.09
0.75
839
0.54
0.80
891
0.55
1800
—
—
—
0.39
0.83
924
0.40
1900
—
—
—
0.23
0.86
957
0.25
2000
—
—
—
0.08
0.89
990
0.10
2100
—
—
—
—
—
—
—
2200
—
—
—
—
—
—
—
2300
—
—
—
—
—
—
—
2400
—
—
—
—
—
—
—
2500
Medium Speed
208 V
230,460,575 V
Bhp Watts Esp
Bhp Watts
0.70
782
1.20
0.76
845
0.74
821
1.06
0.79
883
0.77
861
0.93
0.83
921
0.81
900
0.80
0.86
959
0.84
940
0.67
0.90
997
0.88
979
0.54
0.93
1035
0.91
1018
0.41
0.96
1073
—
—
0.28
1.00
1111
—
—
0.15
1.03
1149
—
—
0.02
1.07
1187
—
—
—
—
—
LEGEND
Bhp — Brake Horsepower Input to Fan
Esp — External Static Pressure (in. wg)
FIOP — Factory-Installed Option
Esp
1.22
1.09
0.97
0.84
0.72
0.59
0.46
0.34
0.21
0.09
—
High Speed
208 V
230,460,575 V
Bhp Watts Esp
Bhp Watts
0.79
875
1.28
0.85
949
0.82
913
1.17
0.89
988
0.85
950
1.06
0.92
1027
0.89
988
0.95
0.96
1066
0.92
1025
0.84
0.99
1105
0.95
1063
0.73
1.03
1144
0.99
1101
0.62
1.06
1183
1.02
1138
0.51
1.10
1222
1.06
1176
0.40
1.13
1261
1.09
1213
0.29
1.17
1300
—
—
0.18
1.20
1340
2. Extensive motor and electrical testing on these units ensures that
the full range of the motor can be utilized with confidence. Using
your fan motors up to the wattage ratings shown will not result in
nuisance tripping or premature motor failure. Unit warranty will not
be affected. See Table 6 — Motor Data for Additional information.
3. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
NOTES:
1. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
Table 15 — Fan Performance 48TF006 — Vertical Discharge Units, Alternate Motor
48TF006 (5 TONS) — ALTERNATE MOTOR (BELT DRIVE)*
Airflow
(Cfm)
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
Rpm
729
770
811
852
893
935
977
1019
1061
1103
1145
0.1
Bhp
0.36
0.42
0.50
0.58
0.68
0.78
0.89
1.02
1.16
1.30
1.46
Watts
368
429
511
593
695
797
910
1042
1185
1328
1492
Rpm
788
826
864
903
942
982
1022
1063
1104
1145
1186
0.2
Bhp
0.42
0.49
0.57
0.66
0.76
0.87
0.99
1.12
1.26
1.41
1.57
Watts
429
501
582
674
777
889
1012
1145
1288
1441
1604
External Static Pressure (in. wg)
0.4
0.6
Rpm Bhp Watts Rpm Bhp Watts
981 0.69
705
896 0.56
572
930 0.64
654 1015 0.78
797
964 0.72
736 1051 0.88
899
999 0.82
838 1085 0.98
1001
1035 0.92
940 1119 1.10
1124
1070 1.04
1063 1153 1.22
1247
1107 1.17
1196 1187 1.35
1380
1144 1.30
1328 1222 1.49
1523
1182 1.47
1502 1258 1.65
1686
1220 1.61
1645 1293 1.80
1860
1259 1.78
1819 1329 2.00
2044
48TF006 (5 TONS) — ALTERNATE MOTOR (BELT DRIVE)* (cont)
External Static Pressure (in. wg)
Airflow
1.2
1.4
1.6
(Cfm)
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp
1226 1.19
1216 1301 1.46
1500
1492 1380 1.69
1242 1.28
1308 1318 1.49
1600
1523 1392 1.78
1270 1.39
1420 1335 1.58
1700
1615 1408 1.80
1300 1.52
1553 1361 1.71
1800
1747 1423 1.91
1900
1329 1.64
1676 1391 1.80
1891 1448 2.05
2000
1355 1.77
1809 1420 1.99
2034 1477 2.21
—
—
2100
1381 1.91
1952 1449 2.14
2167
—
—
2200
1413 2.08
2126 1474 2.30
2350
—
—
—
—
—
2300
1449 2.26
2310
1485 2.47
2524
—
—
—
—
—
2400
—
—
—
—
—
—
—
—
2500
Rpm
1070
1098
1124
1155
1191
1227
1260
1294
1328
1362
1397
0.8
Bhp
0.85
0.94
1.03
1.13
1.26
1.40
1.54
1.70
1.80
2.03
2.22
Watts
869
961
1053
1155
1288
1431
1574
1737
1901
2074
2269
Rpm
1144
1173
1203
1231
1288
1287
1323
1359
1393
1426
1460
1.0
Bhp
1.01
1.11
1.21
1.32
1.43
1.57
1.72
1.89
2.07
2.26
2.45
Watts
1032
1134
1237
1349
1461
1604
1758
1931
2115
2310
2504
Watts
1757
1800
1850
1952
2095
2258
—
—
—
—
—
LEGEND
Bhp
— Brake Horsepower Input to Fan
FIOP — Factory-Installed Option
Watts — Input Watts to Motor
3. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
4. Maximum continuous bhp is 1.30 for single-phase units and 2.40
for 3-phase units and the maximum continuous watts are 2120.
Extensive motor and electrical testing on these units ensures that
the full range of the motor can be utilized with confidence. Using
your fan motors up to the wattage ratings shown will not result in
nuisance tripping or premature motor failure. Unit warranty will not
be affected. See Table 6 — Motor Data for additional information.
5. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
6. Interpolation is permissible. Do not extrapolate.
*Motor drive range is 900 to 1300 rpm. All other rpms require a fieldsupplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2.
indicates field-supplied motor and drive are required.
24
Table 16 — Fan Performance 48TF006 — Vertical Discharge Units, High-Static Motor
48TF006 (5 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)*
External Static Pressure (in. wg)
0.6
Watts
Rpm
Bhp
Watts
Rpm
572
1001
0.69
705
1084
645
1034
0.78
797
1111
736
1068
0.88
899
1145
838
1105
0.98
1001
1179
940
1143
1.10
1124
1212
1063
1177
1.22
1247
1247
1196
1210
1.35
1380
1284
1322
1328
1245
1.49
1523
1356
1502
1284
1.65
1686
1323
1.80
1860
1389
1645
1363
2.00
2044
1424
1819
0.8
Bhp
0.85
0.94
1.03
1.13
1.26
1.40
1.54
1.70
1.80
2.03
2.22
Watts
869
961
1053
1155
1288
1431
1574
1737
1901
2074
2269
Rpm
1168
1194
1218
1246
1280
1300
1347
1380
1418
1456
1500
1.0
Bhp
1.01
1.11
1.21
1.32
1.43
1.57
1.72
1.89
2.07
2.26
2.45
Watts
1032
1134
1237
1349
1481
1604
1758
1931
2115
2310
2504
48TF006 (5 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)* (cont)
External Static Pressure (in. wg)
Airflow
1.2
1.4
1.6
(Cfm)
Rpm
Bhp
Watts
Rpm
Bhp
Watts
Rpm
Bhp
Watts
Rpm
1301
1500
1199
1.19
1216
1126
1.46
1492
1250
1.69
1757
1352
1600
1263
1.28
1308
1275
1.49
1523
1299
1.78
1800
1351
1.58
1615
1352
1.80
1850
1407
1700
1295
1.39
1420
1319
1.52
1553
1389
1.71
1747
1453
1.91
1952
1494
1800
1343
1.64
1676
1415
1.80
1891
1478
2.05
1095
1538
1900
1374
1.77
1809
1438
1.99
2034
1505
2.21
2258
1566
2000
1409
1.91
1952
1465
2.14
2167
1533
2.45
2501
1596
2100
1442
2.08
2126
1498
2.30
2350
1568
2.64
2688
1632
2200
1475
2.26
2310
1554
2.64
2698
1627
3.03
3091
1693
2300
1565
2.47
2524
1649
2.89
2948
1726
3.31
3379
—
2400
1596
2.95
3010
1682
3.45
3522
1760
3.96
4036
—
2500
1.8
Bhp
1.91
2.01
2.03
2.15
2.31
2.49
2.77
2.97
3.42
—
—
Watts
1944
2047
2070
2197
2358
2542
2821
3031
3486
—
—
Rpm
1349
1401
1459
1548
1594
1624
1654
1691
1755
—
—
2.0
Bhp
2.12
2.23
2.26
2.40
2.57
2.77
3.08
3.31
3.81
—
—
Watts
2164
2280
2305
2446
2625
2830
3141
3375
3881
—
—
Airflow
(Cfm)
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
Rpm
808
846
884
942
965
1008
1051
1095
1140
1185
1231
0.2
Bhp
0.42
0.49
0.57
0.66
0.78
0.87
0.99
1.12
1.28
1.41
1.57
Watts
429
501
592
674
777
889
1012
1145
1288
1441
1604
Rpm
914
950
983
1018
1057
1096
1136
1173
1210
1249
1289
0.4
Bhp
0.56
0.64
0.72
0.82
0.92
1.04
1.17
1.30
1.47
1.61
1.78
3. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
4. Maximum continuous bhp is 2.9 and the maximum continuous
watts are 2562. Extensive motor and electrical testing on these
units ensures that the full range of the motor can be utilized with
confidence. Using your fan motors up to the wattage ratings shown
will not result in nuisance tripping or premature motor failure. Unit
warranty will not be affected. See Table 6 — Motor Data for additional information.
5. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
6. Interpolation is permissible. Do not extrapolate.
LEGEND
Bhp
— Brake Horsepower Input to Fan
FIOP — Factory-Installed Option
Watts — Input Watts to Motor
*Motor drive range is 1300 to 1685 rpm. All other rpms require a fieldsupplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2.
indicates field-supplied motor and drive are required.
25
Table 17 — Fan Performance 48TF007 — Vertical Discharge Units, Standard Motor
48TF007 (6 TONS) — STANDARD MOTOR (BELT DRIVE)*
Airflow
(Cfm)
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
Rpm
942
982
1022
1063
1104
1130
1174
1201
1246
1285
1304
1345
1378
0.1
Bhp
0.70
0.80
0.91
0.99
1.13
1.26
1.37
1.48
1.62
1.75
1.87
2.07
2.26
Watts
646
739
835
916
1039
1156
1258
1361
1491
1613
1726
1910
2084
Rpm
978
1023
1068
1115
1159
1202
1237
1272
1320
1361
1402
1446
1489
0.2
Bhp
0.66
0.78
0.90
1.00
1.15
1.29
1.41
1.53
1.68
1.82
1.95
2.16
2.36
Watts
700
779
867
998
1081
1140
1224
1335
1482
1595
1639
1814
2032
External Static Pressure (in. wg)
0.4
0.6
Rpm Bhp Watts Rpm Bhp Watts
891
1063 0.82
771 1147 0.97
1097 0.91
843 1175 1.11 1006
1132 1.01
924 1218 1.23 1106
1180 1.17 1056 1261 1.35 1207
1214 1.28 1148 1310 1.52 1353
1248 1.38 1233 1358 1.69 1499
1292 1.55 1378 1392 1.81 1604
1335 1.71 1517 1427 1.94 1718
1368 1.81 1604 1458 2.06 1823
1400 1.91 1691 1490 2.19 1936
1439 2.08 1840 1543 2.43 2145
1477 2.16 1989 1585 2.65 2335
1529 2.52 2223 1598 2.73 2444
48TF007 (6 TONS) — STANDARD MOTOR (BELT DRIVE)* (cont)
External Static Pressure (in.wg)
Airflow
1.2
1.4
(Cfm)
Rpm Bhp Watts Rpm Bhp Watts Rpm
1395 1.46 1301 1475 1.56 1387 1542
1800
1430 1.58 1404 1504 1.69 1499 1556
1900
1459 1.67 1482 1532 1.82 1613 1588
2000
2100
1489 1.80 1595 1567 1.99 1761 1626
2200
1528 1.95 1726 1603 2.17 1919 1666
2300
1561 2.13 1884 1637 2.35 2076 1710
2400
1584 2.28 2015 1671 2.55 2249 1756
1633 2.53 2232 1698 2.72 2405
—
2500
1675 2.77 2436
—
—
—
—
2600
—
—
—
—
—
—
—
2700
—
—
—
—
—
—
—
2800
—
—
—
—
—
—
—
2900
—
—
—
—
—
—
—
3000
1.6
Bhp
1.71
1.82
1.97
2.16
2.37
2.54
2.70
—
—
—
—
—
—
Rpm
1248
1266
1303
1340
1375
1410
1460
1518
1562
1602
1642
—
—
0.8
Bhp
1.20
1.29
1.41
1.53
1.63
1.72
1.90
2.16
2.42
2.64
2.86
—
—
Watts
1081
1156
1258
1361
1447
1526
1683
1910
2136
2326
2512
—
—
Rpm
1322
1356
1397
1428
1459
1488
1532
1575
1620
1666
—
—
—
1.0
Bhp
1.33
1.47
1.52
1.66
1.80
1.93
2.14
2.35
2.59
2.85
—
—
—
Watts
1190
1310
1353
1473
1595
1709
1892
2076
2283
2504
——
—
Watts
1517
1613
1744
1910
2093
2272
2467
—
—
—
—
—
—
3. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
4. Maximum continuous bhp is 2.40 and the maximum continuous
watts are 2120. Extensive motor and electrical testing on these
units ensures that the full range of the motor can be utilized with
confidence. Using your fan motors up to the wattage ratings shown
will not result in nuisance tripping or premature motor failure. Unit
warranty will not be affected. See Table 6 — Motor Data for additional information.
5. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
6. Interpolation is permissible. Do not extrapolate.
LEGEND
Bhp
— Brake Horsepower Input to Fan
FIOP — Factory-Installed Option
Watts — Input Watts to Motor
*Motor drive range is 1070 to 1460 rpm. All other rpms require a fieldsupplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2.
indicates field-supplied motor and drive are required.
26
Table 18 — Fan Performance 48TF007 — Vertical Discharge Units, High-Static Motor
48TF007 (6 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)*
External Static Pressure (in. wg)
0.6
Watts
Rpm
Bhp
Watts
Rpm
771
1147
0.97
891
1248
843
1175
1.11
1006
1266
1303
924
1218
1.23
1106
1340
1056
1261
1.35
1207
1310
1.52
1353
1375
1148
1358
1.69
1499
1410
1233
1392
1.81
1604
1460
1378
1517
1427
1.94
1718
1518
1604
1458
2.06
1823
1562
1691
1490
2.19
1936
1602
1840
1543
2.43
2145
1642
1989
1585
2.65
2335
1753
2223
1598
2.73
2444
1767
0.8
Bhp
1.20
1.29
1.41
1.53
1.63
1.72
1.90
2.16
2.42
2.64
2.86
3.58
3.69
Watts
1081
1156
1258
1361
1447
1526
1683
1910
2136
2326
2512
3262
3360
Rpm
1322
1356
1397
1428
1459
1488
1532
1575
1620
1666
1775
—
—
1.0
Bhp
1.33
1.47
1.52
1.66
1.80
1.93
2.14
2.35
2.59
2.85
3.62
—
—
Watts
1190
1310
1353
1473
1595
1709
1892
2076
2283
2504
3290
—
—
48TF007 (6 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)* (cont)
External Static Pressure (in. wg)
Airflow
1.2
1.4
1.6
(Cfm)
Rpm
Bhp
Watts
Rpm
Bhp
Watts
Rpm
Bhp
Watts
Rpm
1395
1.46
1301
1475
1.56
1387
1542
1.71
1517
1607
1800
1430
1.58
1404
1504
1.69
1499
1556
1.82
1613
1621
1900
1459
1.67
1482
1532
1.82
1613
1588
1.97
1744
1655
2000
1489
1.80
1595
1567
1.99
1761
1626
2.16
1910
2100
1694
1528
1.95
1726
1603
2.17
1919
1666
2.37
2093
2200
1736
1561
2.13
1884
1637
2.35
2076
2300
1710
2.54
2272
1782
1584
2.28
2015
1671
2.55
2249
—
2400
1756
2.70
2467
1633
2.53
2232
1779
3.13
2848
—
2500
1698
2.72
2405
1675
2.77
2436
1768
3.26
2964
—
—
—
—
2600
1776
3.45
3141
—
—
—
—
—
—
—
2700
—
—
—
—
—
—
—
—
—
—
2800
—
—
—
—
—
—
—
—
—
—
2900
—
—
—
—
—
—
—
—
—
—
3000
1.8
Bhp
1.94
2.06
2.23
2.44
2.68
2.87
—
—
—
—
—
—
—
Watts
1761
1874
2029
2224
2441
2616
—
—
—
—
—
—
—
Rpm
1667
1682
1717
1758
—
—
—
—
—
—
—
—
—
2.0
Bhp
2.16
2.30
2.49
2.73
—
—
—
—
—
—
—
—
—
Watts
1967
2093
2266
2485
—
—
—
—
—
—
—
—
—
Airflow
(Cfm)
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
Rpm
978
1023
1068
1115
1159
1202
1237
1272
1320
1361
1402
1446
1489
0.2
Bhp
0.66
0.78
0.90
1.00
1.15
1.29
1.41
1.53
1.68
1.82
1.95
2.16
2.36
Watts
700
779
867
988
1081
1140
1224
1335
1482
1595
1639
1814
2032
Rpm
1063
1097
1132
1180
1214
1248
1292
1335
1368
1400
1439
1477
1529
0.4
Bhp
0.82
0.91
1.01
1.17
1.28
1.38
1.55
1.71
1.81
1.91
2.08
2.16
2.52
3. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
4. Maximum continuous bhp is 2.9 and the maximum continuous
watts are 2562. Extensive motor and electrical testing on these
units ensures that the full range of the motor can be utilized with
confidence. Using your fan motors up to the wattage ratings shown
will not result in nuisance tripping or premature motor failure. Unit
warranty will not be affected. See Table 6 — Motor Data for additional information.
5. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
6. Interpolation is permissible. Do not extrapolate.
LEGEND
Bhp
— Brake Horsepower Input to Fan
FIOP — Factory-Installed Option
Watts — Input Watts to Motor
*Motor drive range is 1300 to 1685 rpm. All other rpms require a fieldsupplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2.
indicates field-supplied motor and drive are required.
27
Table 19 — Fan Performance 48TF004 — Horizontal Discharge Units, Standard Motor
48TF004 (3 TONS) — STANDARD MOTOR (DIRECT DRIVE)
Low Speed
Airflow
208 V
230, 460, 575 V
(Cfm)
Esp
Bhp
Watts
Esp
Bhp
Watts
0.54
0.21
253
0.57
0.23
277
900
0.49
0.23
270
0.51
0.25
292
1000
0.43
0.24
287
0.45
0.26
307
1100
0.39
0.26
304
0.40
0.27
323
1200
0.33
0.27
321
0.35
0.29
338
1300
0.26
0.29
338
0.28
0.30
354
1400
0.21
0.30
355
0.23
0.31
369
1500
LEGEND
Bhp — Brake Horsepower Input to Fan
Esp — External Static Pressure (in. wg)
FIOP — Factory-Installed Option
High Speed
Esp
0.55
0.52
0.46
0.38
0.35
0.29
0.24
208 V
Bhp
0.26
0.27
0.28
0.29
0.31
0.32
0.33
Watts
307
321
335
349
364
378
392
Esp
0.60
0.53
0.49
0.43
0.36
—
—
230, 460, 575 V
Bhp
Watts
0.31
363
0.32
374
0.33
385
0.34
397
0.34
408
—
—
—
—
2. Extensive motor and electrical testing on these units ensures that
the full range of the motor can be utilized with confidence. Using
your fan motors up to the wattage ratings shown will not result in
nuisance tripping or premature motor failure. Unit warranty will not
be affected. See Table 6 — Motor Data for Additional information.
3. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
NOTES:
1. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
Table 20 — Fan Performance 48TF004 — Horizontal Discharge Units, Alternate Motor
48TF004 (3 TONS) — ALTERNATE MOTOR (BELT DRIVE)*
External Static Pressure (in. wg)
0.3
0.4
Rpm Bhp Watts Rpm Bhp Watts
656
0.12
139
734
0.22
219
800
0.26
259
738
0.19
189
812
0.29
288
758
0.23
229
780
0.28
279
840
0.32
318
808
0.32
318
868
0.37
368
845
0.38
378
891
0.42
418
870
0.43
428
924
0.48
477
Rpm
818
848
863
889
916
937
969
0.5
Bhp
0.25
0.29
0.32
0.36
0.41
0.47
0.53
Watts
269
288
308
358
408
467
527
Rpm
875
895
914
938
963
983
1014
0.6
Bhp
0.27
0.31
0.35
0.40
0.45
0.51
0.58
Watts
269
308
348
398
448
507
577
48TF004 (3 TONS) — ALTERNATE MOTOR (BELT DRIVE)* (cont)
External Static Pressure (in. wg)
Airflow
0.7
0.8
0.9
1.0
(Cfm)
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
924 0.32
308
953 0.35
348
989 0.38
388
900
1028 0.42
438
936 0.35
348
977 0.39
388
1000
1020 0.44
438
1064 0.48
477
960 0.39
388
1100
1005 0.43
428
1052 0.49
487
1100 0.52
527
988 0.45
448
1200
1038 0.50
497
1076 0.53
527
1136 0.59
577
1300
1012 0.51
507
1061 0.56
557
1094 0.61
607
1172 0.65
647
1400
1027 0.56
557
1071 0.60
597
1108 0.67
666
1208 0.70
706
1500
1056 0.63
627
1097 0.68
676
1117 0.70
696
1245 0.74
776
Rpm
1074
1124
1163
1201
1239
1278
1315
1.1
Bhp
0.45
0.52
0.56
0.61
0.69
0.75
0.80
Watts
487
537
587
647
716
786
865
Rpm
1120
1185
1225
1266
1306
1347
1385
1.2
Bhp
0.50
0.55
0.60
0.64
0.72
0.79
0.85
Watts
537
597
647
716
786
865
955
Airflow
(Cfm)
900
1000
1100
1200
1300
1400
1500
Rpm
526
570
614
658
703
725
755
0.1
Bhp
0.06
0.09
0.13
0.16
0.20
0.29
0.33
Watts
70
109
149
189
239
288
328
Rpm
584
627
670
710
752
776
816
0.2
Bhp
0.08
0.13
0.16
0.23
0.27
0.31
0.38
Watts
99
149
189
229
269
308
378
LEGEND
Bhp
— Brake Horsepower Input to Fan
FIOP — Factory-Installed Option
Watts — Input Watts to Motor
3. Maximum continuous bhp is 1.00 and maximum continuous watts
are 1000. Extensive motor and electrical testing on these units
ensures that the full range of the motor can be utilized with confidence. Using your fan motors up to the wattage ratings shown will
not result in nuisance tripping or premature motor failure. Unit warranty will not be affected. See Table 6 — Motor Data for additional
information.
4. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
5. Interpolation is permissible. Do not extrapolate.
*Motor drive range is 760 to 1000 rpm. All other rpms require a fieldsupplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
28
Table 21 — Fan Performance 48TF004 — Horizontal Discharge Units, High-Static Motor
48TF004 (3 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)*
External Static Pressure (in. wg)
0.6
Watts
Rpm
Bhp
Watts
Rpm
219
875
0.27
269
953
259
895
0.31
308
977
288
914
0.35
348
1005
318
938
0.40
398
1038
368
963
0.45
448
1061
418
983
0.51
507
1071
1097
477
1014
0.58
577
0.8
Bhp
0.36
0.39
0.43
0.50
0.56
0.60
0.68
Watts
348
388
428
497
557
597
676
Rpm
1028
1064
1000
1136
1172
1208
1245
1.0
Bhp
0.42
0.48
0.52
0.59
0.65
0.70
0.74
Watts
438
477
527
577
647
706
776
48TF004 (3 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)* (cont)
External Static Pressure (in. wg)
Airflow
1.2
1.4
1.6
(Cfm)
Rpm
Bhp
Watts
Rpm
Bhp
Watts
Rpm
Bhp
Watts
Rpm
1120
0.54
537
1155
0.59
589
1186
0.64
639
1215
900
1185
0.60
597
1222
0.66
655
1255
0.71
709
1285
1000
1225
0.65
647
1263
0.71
709
1298
0.77
769
1328
1100
1266
0.72
716
1306
0.79
786
1341
0.86
851
1373
1200
1306
0.79
786
1347
0.87
862
1383
0.94
934
1416
1300
1347
0.87
865
1389
0.95
950
1427
1.03
1029
1400
1461
1385
0.96
955
1428
1.05
1048
1500
1467
1.14
1135
1502
1.8
Bhp
0.69
0.77
0.83
0.92
1.01
1.11
1.22
Watts
685
761
825
914
1003
1104
1218
Rpm
1240
1312
1357
1402
1446
1492
1534
2.0
Bhp
0.73
0.82
0.88
0.98
1.07
1.18
1.30
Watts
730
811
879
973
1068
1176
1298
Airflow
(Cfm)
900
1000
1100
1200
1300
1400
1500
Rpm
584
627
670
710
752
776
816
0.2
Bhp
0.08
0.13
0.16
0.23
0.27
0.31
0.38
Watts
99
149
189
229
269
308
378
Rpm
734
800
812
840
868
891
924
0.4
Bhp
0.22
0.26
0.29
0.32
0.37
0.42
0.48
LEGEND
Bhp
— Brake Horsepower Input to Fan
FIOP — Factory-Installed Option
Watts — Input Watts to Motor
3. Maximum continuous bhp is 2.4 and maximum continuous watts
are 2120. Extensive motor and electrical testing on these units
ensures that the full range of the motor can be utilized with confidence. Using your fan motors up to the wattage ratings shown will
not result in nuisance tripping or premature motor failure. Unit warranty will not be affected. See Table 6 — Motor Data for additional
information.
4. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
5. Interpolation is permissible. Do not extrapolate.
*Motor drive range is 1075 to 1455 rpm. All other rpms require a fieldsupplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
29
Table 22 — Fan Performance 48TF005 — Horizontal Discharge Units, Standard Motor
48TF005 (4 TONS) — STANDARD MOTOR (DIRECT DRIVE)
Low Speed
Airflow
208 V
230, 460, 575 V
(Cfm)
Esp
Bhp
Watts
Esp
Bhp
Watts
0.75
0.41
458
0.81
0.45
506
1200
0.68
0.42
471
0.74
0.46
521
1300
0.60
0.45
503
0.66
0.49
556
1400
0.51
0.47
536
0.58
0.52
593
1500
0.42
0.49
557
0.49
0.54
616
1600
0.32
0.52
584
0.39
0.57
646
1700
0.21
0.54
610
0.29
0.60
674
1800
0.09
0.56
629
0.18
0.62
696
1900
—
—
—
0.06
0.65
731
2000
LEGEND
Bhp — Brake Horsepower Input to Fan
Esp — External Static Pressure (in. wg)
FIOP — Factory-Installed Option
High Speed
Esp
0.87
0.79
0.71
0.64
0.56
0.48
0.41
0.33
0.26
208 V
Bhp
0.51
0.52
0.54
0.56
0.58
0.60
0.62
0.64
0.66
Watts
572
589
616
631
654
678
698
720
744
Esp
0.92
0.85
0.77
0.70
0.63
0.55
0.48
0.41
0.33
230, 460, 575 V
Bhp
Watts
0.56
632
0.58
651
0.60
681
0.62
698
0.64
723
0.66
750
0.68
772
0.70
796
0.73
823
2. Extensive motor and electrical testing on these units ensures that
the full range of the motor can be utilized with confidence. Using
your fan motors up to the wattage ratings shown will not result in
nuisance tripping or premature motor failure. Unit warranty will not
be affected. See Table 6 — Motor Data for Additional information.
3. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
NOTES:
1. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
Table 23 — Fan Performance 48TF005 — Horizontal Discharge Units, Alternate Motor
48TF005 (4 TONS) — ALTERNATE MOTOR (BELT DRIVE)*
Airflow
(Cfm)
1200
1300
1400
1500
1600
1700
1800
1900
2000
0.1
Rpm Bhp Watts Rpm
569 0.18 189 641
604 0.22 231 673
640 0.27 284 705
676 0.32 336 738
713 0.38 399 772
750 0.45 473 806
788 0.52 546 841
826 0.60 630 876
864 0.70 735 912
0.2
Bhp Watts Rpm
0.23 242 701
0.28 294 731
0.33 347 761
0.38 399 793
0.44 462 825
0.51 536 857
0.59 620 890
0.68 714 924
0.77 809 958
External Static Pressure (in. wg)
0.3
0.4
0.6
0.7
0.8
Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
859 0.46
483 901 0.52
546 943 0.58
609
0.29 299
761 0.34 357
887 0.52
546 928 0.59
615 968 0.65
683
0.34 352
788 0.39 410
914 0.59
620 955 0.66
688 996 0.72
757
0.39 410
817 0.45 473
847 0.51 536
940 0.65
683 982 0.73
767 1024 0.81
851
0.45 468
877 0.58 609
967 0.73
767 1009 0.81
851 1051 0.89
935
0.51 536
0.59 615
908 0.66 693
997 0.81
851 1037 0.90
940 1077 1.01 1030
0.67 704
939 0.75 788 1026 0.91
956 1065 1.01 1040 1104 1.07 1124
0.76 799
971 0.84 883 1056 1.01 1061 1094 1.10 1151 1132 1.18 1240
0.86 898 1004 0.94 988 1087 1.12 1177 1125 1.21 1271 1162 1.30 1366
48TF005 (4 TONS) — ALTERNATE MOTOR (BELT DRIVE)* (cont)
External Static Pressure (in. wg)
Airflow
0.9
1.0
1.1
1.2
1.4
1.6
1.8
(Cfm)
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
987 0.64
652 1030 0.70
695 1068 0.79
792 1106 0.87
889 1134 0.98
998 1189 1.12 1138 1245 1.21 1358
1200
1006 0.71
709 1044 0.77
736 1086 0.84
833 1128 0.91
930 1183 1.10 1052 1226 1.23 1215 1297 1.35 1406
1300
1033 0.79
797 1069 0.86
838 1104 0.93
925 1139 1.01 1012 1218 1.14 1090 1286 1.34 1282 1320 1.48 1463
1400
1060 0.88
891 1095 0.95
930 1129 1.02 1022 1162 1.09 1114 1228 1.24 1186 1303 1.40 1339 1343 1.60 1530
1500
1087 1.01 1001 1123 1.05 1073 1156 1.13 1150 1185 1.20 1226 1250 1.35 1291 1319 1.51 1444 1382 1.68 1607
1600
1114 1.07 1108 1151 1.15 1185 1183 1.23 1262 1215 1.31 1339 1276 1.48 1415 1334 1.64 1569 1398 1.80 1722
1700
1141 1.17 1221 1178 1.26 1318 1211 1.35 1390 1243 1.43 1461 1303 1.61 1540 1359 1.78 1702 1418 1.95 1865
1800
1168 1.28 1371 1204 1.37 1502 1238 1.47 1548 1271 1.56 1594 1330 1.74 1664 1386 1.93 1846 1439 2.11 2018
1900
1197 1.39 1485 1231 1.48 1604 1265 1.59 1666 1298 1.69 1727 1358 1.89 1808 1413 2.08 1989 1466 2.27 2171
2000
LEGEND
Bhp
— Brake Horsepower Input to Fan
FIOP — Factory-Installed Option
Watts — Input Watts to Motor
3. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
4. Maximum continuous bhp is 1.00 and the maximum continuous
watts are 1000. Extensive motor and electrical testing on these
units ensures that the full range of the motor can be utilized with
confidence. Using your fan motors up to the wattage ratings shown
will not result in nuisance tripping or premature motor failure. Unit
warranty will not be affected. See Table 6 — Motor Data for additional information.
5. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
6. Interpolation is permissible. Do not extrapolate.
*Motor drive range is 835 to 1185 rpm. All other rpms require a fieldsupplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2.
indicates field-supplied motor and drive are required.
30
Table 24 — Fan Performance 48TF005 — Horizontal Discharge Units, High-Static Motor
48TF005 (4 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)*
External Static Pressure (in. wg)
0.6
Watts
Rpm
Bhp
Watts
Rpm
357
859
0.46
483
943
410
887
0.52
546
968
473
914
0.59
620
996
536
940
0.65
683
1024
609
967
0.73
767
1051
1077
693
997
0.81
851
1104
789
1026
0.91
956
1132
883
1056
1.01
1061
1087
1.12
1177
1162
988
0.8
Bhp
0.58
0.65
0.72
0.81
0.89
1.01
1.07
1.18
1.30
Watts
609
683
757
851
935
1030
1124
1240
1366
Rpm
1030
1044
1069
1095
1123
1151
1178
1204
1231
1.0
Bhp
0.70
0.77
0.86
0.95
1.05
1.15
1.26
1.37
1.48
Watts
695
736
838
930
1073
1185
1318
1502
1604
48TF005 (4 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)* (cont)
External Static Pressure (in. wg)
Airflow
1.2
1.4
1.6
(Cfm)
Rpm
Bhp
Watts
Rpm
Bhp
Watts
Rpm
Bhp
Watts
Rpm
1106
0.87
889
1134
0.98
998
1189
1.12
1138
1245
1200
1128
0.91
930
1183
1.10
1052
1226
1.23
1215
1297
1300
1139
1.01
1012
1218
1.14
1090
1286
1.34
1282
1320
1400
1162
1.09
1114
1228
1.24
1186
1303
1.40
1339
1343
1500
1185
1.20
1226
1250
1.35
1291
1319
1.51
1444
1382
1600
1215
1.31
1339
1276
1.48
1415
1334
1.64
1569
1389
1700
1243
1.43
1461
1303
1.61
1540
1359
1.78
1702
1418
1800
1271
1.56
1594
1330
1.74
1664
1386
1.93
1846
1439
1900
1298
1.69
1727
1358
1.89
1808
1413
2.08
1989
2000
1468
1.8
Bhp
1.21
1.35
1.48
1.60
1.68
1.80
1.95
2.11
2.27
Watts
1358
1406
1463
1530
1607
1722
1865
2018
2171
Rpm
1292
1346
1370
1393
1434
1451
1471
1493
—
2.0
Bhp
1.35
1.51
1.65
1.79
1.88
2.01
2.18
2.36
—
Watts
1345
1500
1645
1778
1867
2001
2167
2345
—
Airflow
(Cfm)
1200
1300
1400
1500
1600
1700
1800
1900
2000
Rpm
641
673
705
738
772
806
841
876
912
0.2
Bhp
0.23
0.28
0.33
0.38
0.44
0.51
0.59
0.68
0.77
Watts
242
294
347
399
462
536
620
714
809
Rpm
761
788
817
847
877
908
939
971
1004
0.4
Bhp
0.34
0.39
0.45
0.51
0.58
0.66
0.75
0.84
0.94
LEGEND
Bhp
— Brake Horsepower Input to Fan
FIOP — Factory-Installed Option
Watts — Input Watts to Motor
3. Maximum continuous bhp is 2.4 and maximum continuous watts
are 2120. Extensive motor and electrical testing on these units
ensures that the full range of the motor can be utilized with confidence. Using your fan motors up to the wattage ratings shown will
not result in nuisance tripping or premature motor failure. Unit warranty will not be affected. See Table 6 — Motor Data for additional
information.
4. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
5. Interpolation is permissible. Do not extrapolate.
*Motor drive range is 1075 to 1455 rpm. All other rpms require a fieldsupplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
Table 25 — Fan Performance 48TF006 — Horizontal Discharge Units, Standard Motor
48TF006 (5 TONS) — STANDARD MOTOR (DIRECT DRIVE)
Low Speed
Airflow
208V
230, 460, 575 V
(Cfm)
Esp
Bhp Watts Esp
Bhp Watts Esp
0.74
0.67
750
1.06
0.71
791
1.07
1500
0.54
0.70
780
0.90
0.74
824
0.92
1600
0.34
0.73
810
0.75
0.77
857
0.77
1700
0.14
0.75
839
0.59
0.80
891
0.62
1800
—
—
—
0.44
0.83
924
0.47
1900
—
—
—
0.28
0.86
957
0.32
2000
—
—
—
0.13
0.89
990
0.17
2100
—
—
—
—
—
—
0.02
2200
—
—
—
—
—
—
—
2300
—
—
—
—
—
—
—
2400
—
—
—
—
—
—
—
2500
Medium Speed
208 V
230, 460, 575 V
Bhp Watts Esp
Bhp Watts
0.70
782 1.27
0.76
845
0.74
821 1.13
0.79
883
0.77
861 1.00
0.83
921
0.81
900 0.87
0.86
959
0.84
940 0.74
0.90
997
0.88
979 0.61
0.93 1035
0.91 1018 0.48
0.96 1073
0.95 1058 0.35
1.00 1111
—
—
0.22
1.03 1149
—
—
0.09
1.07 1187
—
—
—
—
—
LEGEND
Bhp — Brake Horsepower Input to Fan
Esp — External Static Pressure (in. wg)
FIOP — Factory-Installed Option
Esp
1.26
1.14
1.01
0.89
0.77
0.64
0.51
0.39
0.26
0.14
—
High Speed
208 V
230, 460, 575 V
Bhp Watts Esp
Bhp Watts
0.79
875 1.33
0.85
949
0.82
913 1.22
0.89
988
0.85
950 1.11
0.92 1027
0.88
988 1.00
0.96 1066
0.92 1025 0.89
0.99 1105
0.95 1063 0.78
1.03 1144
0.99 1101 0.67
1.06 1183
1.02 1138 0.56
1.10 1222
1.06 1176 0.45
1.13 1261
1.09 1213 0.34
1.17 1300
—
—
0.23
1.20 1340
2. Extensive motor and electrical testing on these units ensures that
the full range of the motor can be utilized with confidence. Using
your fan motors up to the wattage ratings shown will not result in
nuisance tripping or premature motor failure. Unit warranty will not
be affected. See Table 6 — Motor Data for Additional information.
3. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
NOTES:
1. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
31
Table 26 — Fan Performance 48TF006 — Horizontal Discharge Units, Alternate Motor
48TF006 (5 TONS) — ALTERNATE MOTOR (BELT DRIVE)*
Airflow
(Cfm)
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
Rpm
730
770
811
852
894
936
978
1021
1064
1107
1150
0.1
Bhp
0.34
0.40
0.47
0.55
0.54
0.74
0.85
0.97
1.10
1.24
1.39
Watts
357
420
494
578
567
778
893
1019
1156
1303
1460
Rpm
789
826
865
905
945
984
1024
1064
1104
1145
1186
0.2
Bhp
0.40
0.46
0.54
0.62
0.72
0.82
0.93
1.05
1.18
1.32
1.48
Watts
420
483
567
651
757
862
977
1103
1240
1387
1555
External Static Pressure (in. wg)
0.4
0.6
Rpm Bhp Watts Rpm Bhp Watts
990 0.67
704
896 0.53
557
931 0.61
641 1020 0.75
788
966 0.69
725 1051 0.84
883
1002 0.78
820 1084 0.93
977
1037 0.88
925 1119 1.04 1093
1072 0.98 1030 1154 1.16 1219
1108 1.10 1156 1192 1.29 1355
1145 1.22 1282 1225 1.43 1503
1183 1.36 1429 1260 1.57 1650
1222 1.45 1524 1296 1.73 1818
1262 1.68 1765 1331 1.89 1986
48TF006 (5 TONS) — ALTERNATE MOTOR (BELT DRIVE)* (cont)
External Static Pressure (in. wg)
Airflow
1.2
1.4
1.6
(Cfm)
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1221 1.17 1229 1256 1.30 1366 1283 1.32 1387
1500
1252 1.27 1334 1311 1.45 1524 1340 1.58 1660
1600
1278 1.37 1439 1345 1.57 1650 1397 1.76 1849
1700
1800
1303 1.48 1555 1371 1.69 1776 1433 1.90 1996
1900
1330 1.59 1671 1396 1.80 1902 1460 2.03 2133
2000
1362 1.73 1818 1422 1.94 2038 1485 2.16 2270
2100
1393 1.87 1965 1452 2.08 2185 1510 2.31 2427
2200
1423 2.02 2122 1483 2.24 2354 1538 2.46 2585
2300
1454 2.18 2291 1515 2.41 2532 1571 2.64 2758
2400
1485 2.36 2480 1544 2.59 2721 1604 2.84 2947
1518 2.55 2679 1574 2.78 2905 1633 3.03 3134
2500
LEGEND
Bhp
— Brake Horsepower Input to Fan
FIOP — Factory-Installed Option
Watts — Input Watts to Motor
Rpm
1303
1330
1424
1480
1517
1544
1570
1594
1623
1657
1692
1.8
Bhp
1.22
1.61
1.89
2.09
2.25
2.40
2.55
2.71
2.88
3.07
3.28
Rpm
1072
1101
1133
1163
1194
1226
1259
1294
1330
1365
1400
0.8
Bhp
0.83
0.91
1.01
1.10
1.21
1.33
1.47
1.62
1.78
1.94
2.12
Watts
872
956
1061
1156
1271
1397
1545
1702
1870
2038
2227
Rpm
1153
1178
1205
1235
1266
1297
1327
1359
1392
1426
1461
1.0
Bhp
1.00
1.09
1.18
1.29
1.40
1.53
1.66
1.80
1.97
2.15
2.34
Watts
1051
1145
1240
1355
1471
1608
1744
1902
2070
2259
2459
Watts
1282
1692
1986
2196
2364
2522
2674
2821
2976
3152
3345
3. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
4. Maximum continuous bhp is 1.30 for single-phase units and 2.40
for 3-phase units and the maximum continuous watts are 2120.
Extensive motor and electrical testing on these units ensures that
the full range of the motor can be utilized with confidence. Using
your fan motors up to the wattage ratings shown will not result in
nuisance tripping or premature motor failure. Unit warranty will not
be affected. See Table 6 — Motor Data for additional information.
5. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
6. Interpolation is permissible. Do not extrapolate.
*Motor drive range is 900 to 1300 rpm. All other rpms require a fieldsupplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2.
indicates field-supplied motor and drive are required.
32
Table 27 — Fan Performance 48TF006 — Horizontal Discharge Units, High-Static Motor
48TF006 (5 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)*
Airflow
(Cfm)
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
Rpm
789
826
865
905
945
984
1024
1064
1104
1145
1186
0.2
Bhp
0.40
0.46
0.54
0.62
0.72
0.82
0.93
1.05
1.18
1.32
1.48
Watts
420
483
567
661
757
862
977
1103
1240
1387
1555
Rpm
896
931
966
1002
1037
1072
1108
1145
1183
1222
1262
0.4
Bhp
0.53
0.61
0.69
0.78
0.88
0.98
1.10
1.22
1.36
1.45
1.68
Watts
557
641
725
820
925
1030
1156
1282
1429
1524
1765
External Static Pressure (in. wg)
0.6
0.8
Rpm Bhp Watts Rpm Bhp Watts
990 0.67
704 1072 0.83
872
1020 0.75
788 1101 0.91
956
1051 0.84
883 1133 1.01 1061
1084 0.93
977 1163 1.10 1156
1119 1.04 1093 1194 1.21 1271
1154 1.16 1219 1226 1.33 1397
1192 1.29 1355 1259 1.47 1545
1225 1.43 1503 1294 1.62 1702
1260 1.57 1650 1330 1.78 1870
1296 1.73 1818 1365 1.94 2038
1331 1.89 1986 1400 2.12 2227
48TF006 (5 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)* (cont)
External Static Pressure (in. wg)
Airflow
1.4
1.6
1.8
(Cfm)
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1500
1256 1.30 1366 1283 1.32 1387 1303 1.22 1282
1311 1.45 1524 1340 1.58 1660 1330 1.61 1692
1600
1345 1.57 1650 1397 1.76 1849 1424 1.89 1986
1700
1371 1.69 1776 1433 1.90 1996 1480 2.09 2196
1800
1396 1.80 1902 1460 2.03 2133 1517 2.25 2364
1900
1422 1.94 2038 1485 2.16 2270 1544 2.40 2522
2000
1452 2.08 2185 1510 2.31 2427 1570 2.55 2674
2100
1483 2.24 2354 1538 2.46 2585 1594 2.71 2821
2200
1515 2.41 2532 1571 2.64 2758 1623 2.88 2976
2300
1544 2.59 2721 1604 2.84 2947 1657 3.07 3152
2400
1574 2.78 2905 1633 3.03 3134 1692 3.28 3345
2500
Rpm
1345
1373
1470
1528
1566
1594
1620
1645
1675
1710
1746
2.0
Bhp
1.34
1.77
2.08
2.30
2.47
2.64
2.80
2.98
3.17
3.38
3.61
Rpm
1153
1178
1205
1235
1266
1297
1327
1359
1392
1426
1461
1.0
Bhp
1.00
1.09
1.18
1.29
1.40
1.53
1.66
1.80
1.97
2.15
2.34
Watts
1051
1145
1240
1355
1471
1608
1744
1902
2070
2259
2459
Rpm
1221
1252
1278
1303
1330
1362
1393
1423
1454
1485
1518
1.2
Bhp
1.17
1.27
1.37
1.48
1.59
1.73
1.87
2.02
2.18
2.36
2.55
Watts
1229
1334
1439
1555
1671
1818
1965
2122
2291
2480
2679
Watts
1390
1834
2153
2381
2563
2734
2905
3087
3280
3497
3736
3. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
4. Maximum continuous bhp is 2.9 and the maximum continuous
watts are 2562. Extensive motor and electrical testing on these
units ensures that the full range of the motor can be utilized with
confidence. Using your fan motors up to the wattage ratings shown
will not result in nuisance tripping or premature motor failure. Unit
warranty will not be affected. See Table 6 — Motor Data for additional information.
5. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
6. Interpolation is permissible. Do not extrapolate.
LEGEND
Bhp
— Brake Horsepower Input to Fan
FIOP — Factory-Installed Option
Watts — Input Watts to Motor
*Motor drive range is 1300 to 1685 rpm. All other rpms require a fieldsupplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2.
indicates field-supplied motor and drive are required.
33
Table 28 — Fan Performance 48TF007 — Horizontal Discharge Units, Standard Motor
48TF007 (6 TONS) — STANDARD MOTOR (BELT DRIVE)*
Airflow
(Cfm)
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
Rpm
885
928
971
1015
1060
1104
1138
1183
1210
1254
1274
1318
1362
0.1
Bhp
0.63
0.73
0.84
0.97
1.10
1.25
1.30
1.43
1.58
1.76
1.82
1.95
2.20
Watts
623
700
787
891
998
1123
1165
1275
1404
1560
1613
1726
1945
Rpm
942
982
1022
1063
1104
1130
1174
1201
1246
1285
1304
1345
1378
0.2
Bhp
0.73
0.83
0.94
1.10
1.20
1.27
1.37
1.50
1.67
1.80
1.85
2.05
2.30
Watts
700
779
867
998
1081
1140
1224
1335
1482
1595
1639
1814
2032
External Static Pressure (in. wg)
0.4
0.6
Rpm Bhp Watts Rpm Bhp Watts
956
1047 0.90
835 1139 1.05
1084 1.02
932 1160 1.11 1006
1121 1.12 1014 1188 1.22 1097
1140 1.18 1064 1196 1.27 1140
1159 1.23 1106 1229 1.41 1258
1196 1.37 1224 1264 1.56 1387
1245 1.57 1396 1305 1.63 1447
1284 1.65 1465 1338 1.75 1552
1312 1.76 1560 1366 1.96 1735
1354 1.95 1726 1403 2.14 1892
1374 2.12 1875 1459 2.25 1989
1412 2.32 2050 1496 2.54 2240
1451 2.40 2119 1534 2.66 2343
48TF007 (6 TONS) — STANDARD MOTOR (BELT DRIVE)* (cont)
External Static Pressure (in. wg)
Airflow
1.2
1.4
(Cfm)
Rpm Bhp Watts Rpm Bhp Watts Rpm
1341 1.40 1250 1413 1.55 1378 1474
1800
1374 1.53 1361 1437 1.62 1439 1490
1900
1396 1.66 1473 1460 1.68 1491 1509
2000
1413 1.75 1552 1475 1.73 1534 1529
2100
1434 1.81 1604 1487 1.85 1639 1554
2200
1459 1.88 1665 1520 2.07 1831 1576
2300
2400
1502 2.06 1823 1552 2.24 1980 1604
2500
1524 2.24 1980 1585 2.42 2136 1638
2600
1552 2.40 2119 1616 2.63 2317 1671
1584 2.61 2300 1646 2.83 2487 1706
2700
1624 2.85 2504 1677 2.99 2661
—
2800
1671 3.03 2725
—
—
—
—
2900
—
—
—
—
—
—
—
3000
1.6
Bhp
1.58
1.67
1.77
1.92
2.07
2.24
2.42
2.60
2.80
2.97
—
—
—
Rpm
1193
1223
1254
1272
1306
1340
1373
1402
1435
1474
1514
1529
1560
0.8
Bhp
1.14
1.24
1.36
1.45
1.53
1.66
1.84
1.99
2.10
2.21
2.42
2.61
2.81
Watts
1031
1114
1216
1292
1361
1473
1630
1761
1858
1954
2136
2300
2470
Rpm
1276
1301
1329
1354
1363
1397
1440
1469
1494
1536
1570
1603
1611
1.0
Bhp
1.30
1.38
1.44
1.58
1.70
1.86
1.95
2.04
2.19
2.46
2.66
2.87
3.01
Watts
1165
1233
1284
1404
1508
1648
1726
1805
1936
2171
2343
2521
2648
Watts
1404
1482
1569
1700
1831
1980
2136
2292
2462
2653
—
—
—
3. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
4. Maximum continuous bhp is 2.4 and maximum continuous watts
are 2120. Extensive motor and electrical testing on these units
ensures that the full range of the motor can be utilized with confidence. Using your fan motors up to the wattage ratings shown will
not result in nuisance tripping or premature motor failure. Unit warranty will not be affected. See Table 6 — Motor Data for additional
information.
5. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
6. Interpolation is permissible. Do not extrapolate.
LEGEND
Bhp
— Brake Horsepower Input to Fan
FIOP — Factory-Installed Option
Watts — Input Watts to Motor
*Motor drive range is 1070 to 1460 rpm. All other rpms require a fieldsupplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2.
indicates field-supplied motor and drive are required.
34
Table 29 — Fan Performance 48TF007 — Horizontal Discharge Units, High-Static Motor
48TF007 (6 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)*
Airflow
(Cfm)
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
Rpm
942
982
1022
1063
1104
1130
1174
1201
1246
1285
1304
1345
1378
0.2
Bhp
0.73
0.83
0.94
1.10
1.20
1.27
1.37
1.50
1.67
1.80
1.85
2.05
2.30
Watts
700
779
867
998
1081
1140
1224
1335
1482
1595
1639
1814
2032
Rpm
1047
1084
1121
1140
1159
1196
1245
1284
1312
1354
1374
1412
1451
0.4
Bhp
0.90
1.02
1.12
1.18
1.23
1.37
1.57
1.65
1.76
1.95
2.12
2.32
2.40
Watts
835
932
1014
1064
1106
1224
1396
1465
1560
1726
1875
2050
2119
External Static Pressure (in. wg)
0.6
0.8
Rpm Bhp Watts Rpm Bhp Watts
1139 1.05
956 1193 1.14 1031
1160 1.11 1006 1223 1.24 1114
1188 1.22 1097 1254 1.36 1216
1196 1.27 1140 1272 1.45 1292
1229 1.41 1258 1306 1.53 1361
1264 1.56 1387 1340 1.66 1473
1305 1.63 1447 1373 1.84 1630
1338 1.75 1552 1402 1.99 1761
1366 1.96 1735 1435 2.10 1858
1403 2.14 1892 1474 2.21 1954
1459 2.25 1989 1514 2.42 2136
1496 2.54 2240 1529 2.61 2300
1534 2.66 2343 1560 2.81 2470
48TF007 (6 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)* (cont)
External Static Pressure (in. wg)
Airflow
1.4
1.6
1.8
(Cfm)
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1413 1.55 1378 1474 1.58 1404 1522 1.74 1564
1800
1437 1.62 1439 1490 1.67 1482 1538 1.84 1653
1900
1460 1.68 1491 1509 1.77 1569 1558 1.95 1752
2000
1475 1.73 1534 1529 1.92 1700 1578 2.11 1901
2100
1478 1.85 1639 1554 2.07 1831 1604 2.28 2049
2200
1520 2.07 1831 1576 2.24 1980 1627 2.46 2218
2300
1552 2.24 1980 1604 2.42 2136 1656 2.66 2396
2400
1585 2.42 2136 1638 2.60 2292 1691 2.86 2574
2500
1616 2.63 2317 1671 2.80 2462 1725 3.08 2772
2600
1646 2.83 2487 1706 2.97 2653 1761 3.27 2941
2700
1677 2.99 2661 1739 3.33 2998 1795 3.67 3299
2800
1742 3.43 3090
—
—
—
—
—
—
2900
1764 3.95 3558
—
—
—
—
—
—
3000
Rpm
1566
1583
1603
1624
1651
1674
1704
1740
1775
—
—
—
—
2.0
Bhp
1.89
2.00
2.12
2.30
2.48
2.68
2.90
3.12
3.35
—
—
—
—
Rpm
1276
1301
1329
1354
1363
1397
1440
1469
1494
1536
1570
1603
1611
1.0
Bhp
1.30
1.38
1.44
1.58
1.70
1.86
1.95
2.04
2.19
2.46
2.66
2.87
3.01
Watts
1165
1233
1284
1404
1508
1648
1726
1805
1936
2171
2343
2521
2648
Rpm
1341
1374
1396
1413
1434
1459
1502
1524
1552
1584
1624
1671
1692
1.2
Bhp
1.40
1.53
1.66
1.75
1.81
1.88
2.06
2.24
2.40
2.61
2.85
3.03
3.49
Watts
1250
1361
1473
1552
1604
1665
1823
1980
2119
2300
2504
2725
3140
Watts
1704
1801
1909
2070
2232
2415
2609
2804
3019
—
—
—
—
3. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
4. Maximum continuous bhp is 2.9 and the maximum continuous
watts are 2562. Extensive motor and electrical testing on these
units ensures that the full range of the motor can be utilized with
confidence. Using your fan motors up to the wattage ratings shown
will not result in nuisance tripping or premature motor failure. Unit
warranty will not be affected. See Table 6 — Motor Data for additional information.
5. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
6. Interpolation is permissible. Do not extrapolate.
LEGEND
Bhp
— Brake Horsepower Input to Fan
FIOP — Factory-Installed Option
Watts — Input Watts to Motor
*Motor drive range is 1300 to 1685 rpm. All other rpms require a fieldsupplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2.
indicates field-supplied motor and drive are required.
35
START-UP
Main Burners — Main burners are factory set and should
require no adjustment.
TO CHECK ignition of main burners and heating controls,
move thermostat set point above room temperature and verify
that the burners light and evaporator fan is energized. After
ensuring that the unit continues to heat the building, lower the
thermostat setting below room temperature and verify that the
burners and evaporator fan turn off. (Fan will turn off only if
fan selector switch is in the AUTO. position.)
Refer to Table 30 for the correct orifice to use at high
altitudes.
Unit Preparation — Make sure that unit has been installed in accordance with these installation instructions and
applicable codes.
Return-Air Filters — Make sure correct filters are installed in filter tracks. See Table 1. Do not operate unit without
return-air filters.
Compressor Mounting — Compressors are internally
spring mounted. Do not loosen or remove compressor holddown bolts.
Internal Wiring — Check all electrical connections in
unit control boxes. Tighten as required.
Table 30 — Altitude Compensation*
Refrigerant Service Ports — To service refrigerant
service ports, remove compressor access panel. Each unit system has 4 Schrader-type service gage ports: one on the suction
line, one on the liquid line, and two on the compressor discharge line. Be sure that caps on the ports are tight. One
Schrader-type valve is located under both the high-pressure
switch and the low-pressure switch.
ELEVATION
(ft)
0-2,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
10,000
11,000
12,000
13,000
14,000
High Flow Valves — Located on the compressor hot gas
and suction tubes are High Flow Valves. Large black plastic
caps distinguish these valves with o-rings located inside the
caps. These valves cannot be accessed for service in the field.
Ensure the plastic caps are in place and tight or the possibility
of refrigerant leakage could occur.
Compressor Rotation — On 3-phase units with scroll
compressors, it is important to be certain compressor is rotating
in the proper direction. To determine whether or not compressor is rotating in the proper direction:
1. Connect service gages to suction and discharge pressure
fittings.
2. Energize the compressor.
3. The suction pressure should drop and the discharge pressure should rise, as is normal on any start-up.
If the suction pressure does not drop and the discharge pressure does not rise to normal levels:
1. Note that the evaporator fan is probably also rotating in
the wrong direction.
2. Turn off power to the unit.
3. Reverse any two of the unit power leads.
4. Reapply power to the compressor.
The suction and discharge pressure levels should now move
to their normal start-up levels.
NOTE: When the compressor is rotating in the wrong direction, the unit makes an elevated level of noise and does not
provide cooling.
74,000 AND 115,000
BTUH NOMINAL
INPUT
Natural
Liquid
Gas
Propane
Orifice
Orifice
Size†
Size†
33
43
34
43
35
44
36
44
36
44
37
45
37
45
38
46
39
47
41
48
43
48
44
49
44
49
45
50
150,000 BTUH
NOMINAL INPUT
Natural
Gas
Orifice
Size†
30
30
31
32
33
34
35
36
37
38
39
40
41
42
Liquid
Propane
Orifice
Size†
38
39
40
41
42
43
43
44
44
45
45
46
47
47
*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.
†Orifices available through your Carrier distributor.
Heating
1. Purge gas supply line of air by opening union ahead of
gas valve. If gas odor is detected, tighten union and wait
5 minutes before proceeding.
2. Turn on electrical supply and manual gas valve.
3. Set system switch selector at HEAT position and fan
switch at AUTO. or ON position. Set heating temperature
lever above room temperature.
4. The induced-draft motor will start.
5. After a call for heating, the main burners should light
within 5 seconds. If the burner does not light, then there is
a 22-second delay before another 5-second try. If the
burner still does not light, the time delay is repeated. If the
burner does not light within 15 minutes, there is a lockout. To reset the control, break the 24-v power to W1.
6. The evaporator-fan motor will turn on 45 seconds after
the burners are ignited.
7. The evaporator-fan motor will turn off 45 seconds after
thermostat temperature is satisfied.
8. Adjust airflow to obtain a temperature rise within the
range specified on the unit nameplate.
NOTE: The default value for the evaporator-fan motor ON/
OFF delay is 45 seconds. The Integrated Gas Unit Controller
(IGC) modifies this value when abnormal limit switch cycles
occur. Based upon unit operating conditions, the ON delay can
be reduced to 0 seconds and the OFF delay can be extended to
180 seconds. When one flash of the LED is observed, the
evaporator-fan ON/OFF delay has been modified.
Cooling — Set space thermostat to OFF position. To start
unit, turn on main power supply. Set system selector switch at
COOL position and fan switch at AUTO. position. Adjust thermostat to a setting below room temperature. Compressor starts
on closure of contactor.
Check unit charge. Refer to Service, Refrigerant Charge
section, page 39.
Reset thermostat at a position above room temperature.
Compressor will shut off. Evaporator fan will shut off after
30-second delay.
TO SHUT OFF UNIT — Set system selector switch at OFF
position. Resetting thermostat at a position above room temperature shuts unit off temporarily until space temperature exceeds thermostat setting.
36
fully open position or until the supply-air temperature drops
below 52 F.
When the supply-air temperature falls between 57 F and
52 F, the damper will remain at an intermediate open position.
If the supply-air temperature falls below 52 F, the damper will
modulate closed until it reaches the minimum position or until
the supply air temperature is above 52 F. When the thermostat
is satisfied, the damper moves to the fully closed position when
using AUTO. fan or to the minimum position when using continuous fan.
If the outdoor air alone cannot satisfy the cooling requirements of the conditioned space, economizer cooling is integrated with mechanical cooling, providing two stages of cooling.
Compressor and the condenser fan will be energized and the
position of the economizer damper will be determined by the
supply-air temperature. When the second stage of cooling is
satisfied, the compressor and OFM will be deenergized. The
damper position will be determined by the supply-air temperature. When the first stage of cooling is satisfied, there is a
30-second delay before the evaporator fan shuts off. The damper then moves to the fully closed position. When using a continuous fan, the damper moves to the minimum position.
COOLING, UNITS WITH ECONOMI$ER — When the
outdoor-air temperature (OAT) is above the ECON SP set point
and the room thermostat calls for Stage 1 cooling (R to G +
Y1), the indoor (evaporator) fan motor (IFM) is energized and
the EconoMi$er damper modulates to minimum position. The
compressor contactor is energized to start the compressor and
outdoor (condenser) fan motor (OFM). After the thermostat is
satisfied, the damper modulates to the fully closed position
when the IFM is deenergized.
When the OAT is below the ECON SP setting and the room
thermostat calls for Stage 1 cooling (R to G + Y1), the
EconoMi$er modulates to the minimum position when the
IFM is energized. The EconoMi$er provides Stage 1 of cooling
by modulating the return and outdoor air dampers to maintain a
55 F supply air set point. If the supply-air temperature (SAT) is
greater than 57 F, the EconoMi$er modulates open, allowing a
greater amount of outdoor air to enter the unit. If the SAT drops
below 53 F, the outdoor air damper modulates closed to reduce
the amount of outdoor air. When the SAT is between 53 and
57 F, the EconoMi$er maintains its position.
If outdoor air alone cannot satisfy the cooling requirements
of the conditioned space, and the OAT is above the MECH
CLG LOCKOUT set point, the EconoMi$er integrates free
cooling with mechanical cooling. This is accomplished by the
strategies below.
NOTE: Compressor has a 2-minute Minimum On, Minimum
Off, and Interstage delay timer.
1. If Y1 is energized, and the room thermostat calls for Y2
(2-stage thermostat), the compressor and OFM are energized. The EconoMi$er damper is maintained at its current position.
2. If Y1 is energized for more than 20 minutes, and Y2 is
not energized (whether or not a 2-stage thermostat is
used), the compressor and OFM are energized. The
EconoMi$er damper is maintained at its current position.
3. If Y1 is energized, and the compressor is already energized (see Step 2) and the room thermostat calls for Y2,
the compressor contains to operate.
4. If the compressor is energized and the thermostat is satisfied, the compressor, the OFM, and IFM are deenergized
and the EconoMi$er modulates closed.
When the OAT is below the MECH CLG LOCKOUT set
point, the compressors remain off.
If the limit switch trips at the start of the heating cycle during the evaporator ON delay, the time period of the ON delay
for the next cycle will be 5 seconds less than the time at which
the switch tripped. (Example: If the limit switch trips at 30 seconds, the evaporator-fan ON delay for the next cycle will occur
at 25 seconds.) To prevent short-cycling, a 5-second reduction
will only occur if a minimum of 10 minutes has elapsed since
the last call for heating.
The evaporator-fan OFF delay can also be modified. Once
the call for heating has ended, there is a 10-minute period during which the modification can occur. If the limit switch trips
during this period, the evaporator-fan OFF delay will increase
by 15 seconds. A maximum of 9 trips can occur, extending the
evaporator-fan OFF delay to 180 seconds.
To restore the original default value, reset the power to the
unit.
TO SHUT OFF UNIT — Set system selector switch at OFF
position. Resetting heating selector lever below room temperature will temporarily shut unit off until space temperature falls
below thermostat setting.
Safety Relief — A soft solder joint at the suction service
Schrader port provides pressure relief under abnormal temperature and pressure conditions (i.e., fire in building).
Ventilation (Continuous Fan) — Set fan and system
selector switches at ON and OFF positions, respectively. Evaporator fan operates continuously to provide constant air circulation. When the evaporator-fan selector switch is turned to
the OFF position, there is a 30-second delay before the fan
turns off.
Operating Sequence
COOLING, UNITS WITHOUT ECONOMIZER — When
thermostat calls for cooling, terminals G and Y1 are energized,
and the indoor (evaporator) fan motor (IFM), compressor, and
outdoor (condenser) fan motor (OFM) start. The OFM runs
continuously while the unit is in cooling. When the thermostat
is satisfied, compressor contactor (C) is deenergized and the
compressor and OFM shut off. After a 30-second delay, the
IFM shuts off. If the thermostat fan selector switch is in the ON
position, the evaporator motor will run continuously.
HEATING, UNITS WITHOUT ECONOMIZER — When
the thermostat calls for heating, terminal W1 is energized. To
prevent thermostat short-cycling, the unit is locked into the
Heating mode for at least 1 minute when W1 is energized. The
induced-draft motor is energized and the burner ignition sequence begins. The indoor (evaporator) fan motor (IFM) is energized 45 seconds after a flame is ignited. On units equipped
for two stages of heat, when additional heat is needed, W2 is
energized and the high-fire solenoid on the main gas valve
(MGV) is energized. When the thermostat is satisfied and W1
is deenergized, the IFM stops after a 45-second time-off delay.
COOLING, UNITS WITH DURABLADE ECONOMIZER — When the outdoor-air temperature is above the
outdoor-air thermostat (OAT) setting and the room thermostat
calls for cooling, compressor contactor is energized to start
compressor and the outdoor (condenser) fan motor (OFM).
The indoor (evaporator) fan motor (IFM) is energized and the
economizer damper moves to the minimum position. After the
thermostat is satisfied, there is a 30-second delay before the
evaporator fan turns off. The damper then moves to the fully
closed position. When using continuous fan, the damper moves
to the minimum position.
When the outdoor-air temperature is below the OAT setting
and the thermostat calls for cooling, the economizer damper
moves to the minimum position. If the supply-air temperature
is above 57 F, the damper continues to open until it reaches the
37
6. Use a water hose or other suitable equipment to flush
down between the 2 coil sections to remove dirt and
debris. Clean the outer surfaces with a stiff brush in the
normal manner.
7. Secure inner and outer coil rows together with a fieldsupplied fastener.
8. Reposition the outer coil section and remove the coil corner post from between the top panel and center post. Reinstall the coil corner post and replace all screws.
CONDENSATE DRAIN — Check and clean each year at
start of cooling season. In winter, keep drain dry or protect
against freeze-up.
FILTERS — Clean or replace at start of each heating and cooling season, or more often if operating conditions require it. Replacement filters must be same dimensions as original filters.
OUTDOOR-AIR INLET SCREEN — Clean screen with
steam or hot water and a mild detergent. Do not use disposable
filters in place of screen.
BELTS — Check belt tension at least once each heating or
cooling season or as conditions require.
HEATING, UNITS WITH ECONOMIZER — When the
thermostat calls for heating, terminal W1 is energized. To prevent thermostat short-cycling, the unit is locked into the Heating mode for at least 1 minute when W1 is energized. The
induced-draft motor is energized and the burner ignition sequence begins. The indoor (evaporator) fan motor (IFM) is energized 45 seconds after a flame is ignited and the damper
moves to the minimum position. On units equipped for two
stages of heat, when additional heat is needed, W2 energized
and the high-fire solenoid on the main gas valve (MGV) is energized. When the thermostat is satisfied and W1 is deenergized, the IFM stops after a 45-second time-off delay. The
economizer damper then moves to the fully closed position.
When using continuous fan, the damper will remain in the minimum position.
SERVICE
When servicing unit, shut off all electrical power to unit
and install lockout tag to avoid shock hazard or injury from
rotating parts.
Cleaning — Inspect unit interior at the beginning of
heating and cooling season and as operating conditions
require.
EVAPORATOR COIL
1. Turn unit power off and install lockout tag. Remove
evaporator coil access panel.
2. If economizer or two-position damper is installed, remove economizer by disconnecting Molex plug and removing mounting screws. Refer to accessory economizer
installation instructions or Optional Economizer sections
on pages 12 and 14 for more details.
3. Slide filters out of unit.
4. Clean coil using a commercial coil cleaner or dishwasher
detergent in a pressurized spray canister. Wash both sides
of coil and flush with clean water. For best results, backflush toward return-air section to remove foreign material. Flush condensate pan after completion.
5. Reinstall economizer and filters.
6. Reconnect wiring.
7. Replace access panels.
CONDENSER COIL — Inspect coil monthly. Clean condenser coil annually, and as required by location and outdoor
air conditions.
One-Row Coils (Size 004) — Wash coil with commercial
coil cleaner. It is not necessary to remove top panel.
2-Row Coils (Sizes 005-007)
Clean coil as follows:
1. Turn off unit power and install lockout tag.
2. Remove top panel screws on condenser end of unit.
3. Remove condenser coil corner post. See Fig. 42. To hold
top panel open, place coil corner post between top panel
and center post. See Fig. 43.
4. Remove screws securing coil to compressor plate and
compressor access panel.
5. Remove fastener holding coil sections together at return
end of condenser coil. Carefully separate the outer coil
section 3 to 4 in. from the inner coil section. See Fig. 44.
Fig. 42 — Cleaning Condenser Coil
Fig. 43 — Propping Up Top Panel
38
NO CHARGE — Use standard evacuating techniques. After
evacuating system, weigh in the specified amount of refrigerant. (Refer to Table 1.)
LOW-CHARGE COOLING — Using Cooling Charging
Charts, Fig. 46-49, vary refrigerant until the conditions of the
appropriate chart are met. Note the charging charts are different
from type normally used. Charts are based on charging the
units to the correct superheat for the various operating conditions. Accurate pressure gage and temperature sensing device
are required. Connect the pressure gage to the service port on
the suction line. Mount the temperature sensing device on the
suction line and insulate it so that outdoor ambient temperature
does not affect the reading. Indoor-air cfm must be within the
normal operating range of the unit.
TO USE COOLING CHARGING CHART — Take the outdoor ambient temperature and read the suction pressure gage.
Refer to chart to determine what suction temperature should
be. If suction temperature is high, add refrigerant. If suction
temperature is low, carefully recover some of the charge.
Recheck the suction pressure as charge is adjusted.
EXAMPLE: (Fig. 48)
Outdoor Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 F
Suction Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 psig
Suction Temperature should be . . . . . . . . . . . . . . . . . . . . . 76 F
(Suction Temperature may vary 5 F.)
Fig. 44 — Separating Coil Sections
Lubrication
Flue Gas Passageways — To inspect the flue collec-
COMPRESSORS — Each compressor is charged with the
correct amount of oil at the factory.
FAN MOTOR BEARINGS — Fan motor bearings are of the
permanently lubricated type. No further lubrication is required.
No lubrication of condenser or evaporator fan motors is
required.
tor box and upper areas of the heat exchanger:
1. Remove the combustion blower wheel and motor assembly according to directions in Combustion-Air Blower
section on page 42.
2. Remove the flue cover to inspect the heat exchanger.
3. Clean all surfaces as required using a wire brush.
Manual Outdoor-Air Damper — If outdoor-air damper
blade adjustment is required, see Manual Outdoor-Air Damper
section on page 11.
Economizer Adjustment — Refer to Optional Economizer sections on page 12 and 14.
Condenser-Fan Adjustment (Fig. 45) — Shut off
unit power supply. Remove condenser-fan assembly (grille,
motor, and fan) and loosen fan hub setscrews. Adjust fan
height as shown in Fig. 45. Tighten setscrews and replace
condenser-fan assembly.
Refrigerant Charge — Amount of refrigerant charge is
listed on unit nameplate (also refer to Table 1). Refer to Carrier
GTAC2-5 Charging, Recovery, Recycling, and Reclamation
training manual and the following procedures.
Unit panels must be in place when unit is operating during
charging procedure.
Fig. 45 — Condenser-Fan Adjustment
39
3 TON UNIT CHARGING CHART
SUCTION LINE TEMPERATURE (DEG. C)
-1
4
10
16
21
27
100
689
90
SUCTION LINE PRESSURE (PSIG)
OUTDOOR
TEMP
621
80
552
70
483
60
414
50
345
40
276
30
SUCTION LINE PRESSURE (KILOPASCALS)
-7
F
125
C
52
115
46
105
41
95
35
85
29
75
24
65
18
55
13
45
7
207
20
30
40
50
60
70
80
SUCTION LINE TEMPERATURE (DEG. F)
Fig. 46 — Cooling Charging Chart, 48TF004
4 TON UNIT CHARGING CHART
SUCTION LINE TEMPERATURE (DEG. C)
-1
4
10
16
21
OUTDOOR
TEMP
27
100
689
90
621
80
552
70
483
60
414
50
345
40
276
30
207
20
30
40
50
60
70
SUCTION LINE TEMPERATURE (DEG. F)
Fig. 47 — Cooling Charging Chart, 48TF005
40
80
SUCTION LINE PRESSURE (KILOPASCALS)
SUCTION LINE PRESSURE (PSIG)
-7
F
125
115
105
95
85
C
52
46
41
35
29
75
24
65
18
55
13
45
7
5 TON UNIT CHARGING CHART
SUCTION LINE TEMPERATURE (DEG. C)
-7
-1
4
10
16
21
100
689
90
621
80
552
70
483
60
414
50
345
40
276
30
SUCTION LINE PRESSURE (KILOPASCALS)
SUCTION LINE PRESSURE (PSIG)
OUTDOOR
TEMP
27
F
125
C
52
115
46
105
41
95
35
85
29
75
24
65
18
55
45
13
7
207
20
30
40
50
60
70
80
SUCTION LINE TEMPERATURE (DEG. F)
Fig. 48 — Cooling Charging Chart, 48TF006
6 TON UNIT (60 Hz) CHARGING CHART
SUCTION LINE TEMPERATURE (DEG. C)
-1
4
10
16
21
27
100
689
90
621
80
552
70
483
60
414
50
345
40
276
30
207
20
30
40
50
60
SUCTION LINE TEMPERATURE (DEG. F)
Fig. 49 — Cooling Charging Chart, 48TF007
41
70
80
OUTDOOR
TEMP
SUCTION LINE PRESSURE (KILOPASCALS)
SUCTION LINE PRESSURE (PSIG)
-7
F
125
115
105
95
85
75
65
55
45
C
52
46
41
35
29
24
18
13
7
Combustion-Air Blower — Clean periodically to
Main Burners — To access burners, remove burner access panel and slide out burner partition. At the beginning of
each heating season, inspect for deterioration or blockage due
to corrosion or other causes. Observe the main burner flames
and adjust, if necessary.
assure proper airflow and heating efficiency. Inspect blower
wheel every fall and periodically during heating season. For the
first heating season, inspect blower wheel bimonthly to determine proper cleaning frequency.
To access burner section, slide the sliding burner partition
out of the unit.
To inspect blower wheel, shine a flashlight into draft hood
opening. If cleaning is required, remove motor and wheel as
follows:
1. Slide burner access panel out.
2. Remove the 7 screws that attach induced-draft motor
housing to vestibule plate (Fig. 50).
3. The blower wheel can be cleaned at this point. If additional cleaning is required, continue with Steps 4 and 5.
4. To remove blower from the motor shaft, remove 2
setscrews.
5. To remove motor, remove the 4 screws that hold the motor to mounting plate. Remove the motor cooling fan by
removing one setscrew. Then remove nuts that hold motor to mounting plate.
6. To reinstall, reverse the procedure outlined above.
When working on gas train, do not hit or plug orifice
spuds.
REMOVAL AND REPLACEMENT OF GAS TRAIN
(Fig. 50-52)
1. Shut off manual gas valve.
2. Shut off power to unit.
3. Slide out burner partition.
4. Disconnect gas piping at unit gas valve.
5. Remove wires connected to gas valve. Mark each wire.
6. Remove ignitor wires and sensor wires at the Integrated
Gas Unit Controller (IGC) (see Fig. 11).
7. Remove the 2 screws that attach the burner rack to the
vestibule plate (Fig. 50).
8. Slide the burner tray out of the unit (Fig. 51).
9. To reinstall, reverse the procedure outlined above.
CLEANING AND ADJUSTMENT
1. Remove burner rack from unit as described in Removal
and Replacement of Gas Train section, above.
2. Inspect burners; if dirty, remove burners from rack.
3. Using a soft brush clean burners and cross-over port as
required.
4. Adjust spark gap. See Fig. 52.
5. Reinstall burners on rack.
6. Reinstall burner rack as described in Removal and Replacement of Gas Train section, above.
Limit Switch — Remove blower access panel (Fig. 7).
Limit switch is located on the fan deck.
Burner Ignition — Unit is equipped with a direct spark
ignition 100% lockout system. Integrated Gas Unit Controller
(IGC) is located in the control box (Fig. 11). The IGC contains
a self-diagnostic LED (light-emitting diode). A single LED on
the IGC provides a visual display of operational or sequential
problems when the power supply is uninterrupted. When a
break in power occurs, the IGC will be reset (resulting in a loss
of fault history) and the indoor (evaporator) fan ON/OFF times
will be reset. The LED error code can be observed through the
viewport. During servicing refer to the label on the control
box cover or Table 31 for an explanation of LED error code
descriptions.
If lockout occurs, unit may be reset by interrupting power
supply to unit for at least 5 seconds.
Replacement Parts — A complete list of replacement
parts may be obtained from any Carrier distributor upon
request.
Table 31 — LED Error Code Description
LED INDICATION
ON
OFF
1 Flash†
2 Flashes
3 Flashes
4 Flashes
5 Flashes
6 Flashes
7 Flashes
8 Flashes
ERROR CODE DESCRIPTION
Normal Operation
Hardware Failure
Evaporator Fan On/Off Delay Modified
Limit Switch Fault
Flame Sense Fault
4 Consecutive Limit Switch Faults
Ignition Lockout Fault
Induced-Draft Motor Fault
Rollout Switch Fault
Internal Control Fault
ROLLOUT
SWITCH
INDUCEDDRAFT
MOTOR
MOUNTING
PLATE
BURNER
SECTION
FLUE
EXHAUST
VESTIBULE
PLATE
INDUCEDDRAFT
MOTOR
LEGEND
LED — Light-Emitting Diode
*A 3-second pause exists between LED error code flashes. If more
than one error code exists, all applicable codes will be displayed in
numerical sequence.
†Indicates a code that is not an error. The unit will continue to operate when this code is displayed.
BLOWER
HOUSING
MANIFOLD
PRESSURE
TAP
GAS
VALVE
Fig. 50 — Burner Section Details
IMPORTANT: Refer to Troubleshooting Tables 32-36 for additional information.
42
Fig. 51 — Burner Tray Details
LOW HEAT
48TFE004, 48TFD005-007 — 74,000 BTUH INPUT
48TFM004, 48TFL005-006 — 60,000 BTUH INPUT
MEDIUM AND HIGH HEAT
48TFE005-007, 48TFF004 — 115,000 BTUH INPUT
48TFF005-007 — 150,000 BTUH INPUT
48TFN004, 48TFM005-006 — 90,000 BTUH INPUT
48TFN005-006 — 120,000 BTUH INPUT
Fig. 52 — Spark Adjustment
43
TROUBLESHOOTING
Table 32 — LED Error Code Service Analysis
PROBLEM
Hardware failure.
(LED OFF)
CAUSE
Loss of power to control module (IGC).
REMEDY
Check 5 amp fuse on IGC, power to unit, 24-v circuit breaker,
and transformer. Units without a 24-v circuit breaker have an
internal overload in the 24-v transformer. If the overload trips,
allow 10 minutes for automatic reset.
Check the operation of the indoor (evaporator) fan motor.
Ensure that the supply-air temperature rise is in accordance
with the range on the unit nameplate.
Reset unit. If problem persists, replace control board.
Limit switch fault.
(LED 2 flashes)
High temperature limit switch is open.
Flame sense fault.
(LED 3 flashes)
4 consecutive limit
switch trips.
(LED 4 flashes)
Ignition lockout.
(LED 5 flashes)
The IGC sensed flame that should not be
present.
Inadequate airflow to unit.
Unit unsuccessfully attempted ignition for
15 minutes.
Induced-draft motor fault.
(LED 6 flashes)
IGC does not sense that induced-draft motor is
operating.
Rollout switch fault.
(LED 7 flashes)
Rollout switch has opened.
Internal control fault.
(LED 8 flashes)
Microprocessor has sensed an error in the software or hardware.
Check operation of indoor (evaporator) fan motor and that
supply-air temperature rise agrees with range on unit nameplate information.
Check ignitor and flame sensor electrode spacing, gaps, etc.
Ensure that flame sense and ignition wires are properly terminated. Verify that unit is obtaining proper amount of gas.
Check for proper voltage. If motor is operating, check the
speed sensor plug/IGC Terminal J2 connection. Proper connection: PIN 1 — White, PIN 2 — Red, PIN 3 — Black.
Rollout switch will automatically reset, but IGC will continue to
lock out unit. Check gas valve operation. Ensure that induced
draft blower wheel is properly secured to motor shaft. Reset
unit at unit disconnect.
If error code is not cleared by resetting unit power, replace the
IGC.
IMPORTANT: Refer to Table 19 — Heating Service Analysis
for additional troubleshooting analysis.
If the IGC must be replaced, be sure to ground yourself to dissipate any electrical charge that may be present before handling
new control board. The IGC is sensitive to static electricity and
may be damaged if the necessary precautions are not taken.
IGC
LED
LEGEND
— Integrated Gas Unit Controller
— Light-Emitting Diode
Table 33 — Heating Service Analysis
PROBLEM
Burners will not ignite.
CAUSE
Misaligned spark electrodes.
No gas at main burners.
REMEDY
Check flame ignition and sensor electrode positioning. Adjust as needed.
Check gas line for air, purge as necessary. After purging gas line of air,
allow gas to dissipate for at least 5 minutes before attempting to relight
unit.
Check gas valve.
Water in gas line.
Drain water and install drip leg to trap water.
No power to furnace.
Check power supply, fuses, wiring, and circuit breaker.
No 24 v power supply to control circuit.
Check transformer. Transformers with internal overcurrent protection
require a cool down period before resetting.
Miswired or loose connections.
Check all wiring and wire nut connections.
Burned-out heat anticipator in thermostat. Replace thermostat.
Broken thermostat wires.
Run continuity check. Replace wires, if necessary.
Dirty air filter.
Clean or replace filter as necessary.
Inadequate heating.
Gas input to unit too low.
Check gas pressure at manifold. Clock gas meter for input. If too low,
increase manifold pressure, or replace with correct orifices.
Unit undersized for application.
Replace with proper unit or add additional unit.
Restricted airflow.
Clean filter, replace filter, or remove any restrictions.
Blower speed too low.
Use high speed tap, increase fan speed, or install optional blower, as
suitable for individual units.
Limit switch cycles main burners.
Check rotation of blower, thermostat heat anticipator settings, and temperature rise of unit. Adjust as needed.
Too much outdoor air.
Adjust minimum position.
Check economizer operation.
Poor flame characteristics. Incomplete combustion (lack of combus- Check all screws around flue outlets and burner compartment. Tighten
tion air) results in:
as necessary.
Aldehyde odors, CO, sooting flame, or
Cracked heat exchanger.
floating flame.
Overfired unit — reduce input, change orifices, or adjust gas line or manifold pressure.
Check vent for restriction. Clean as necessary.
Check orifice to burner alignment.
Unit is locked into Heating mode for a one Wait until mandatory one minute time period has elapsed or reBurners will not turn off.
minute minimum.
set power to unit.
44
Table 34 — Cooling Service Analysis
PROBLEM
Compressor and condenser fan
will not start.
Compressor will not start but
condenser fan runs.
Compressor cycles (other than
normally satisfying thermostat).
Compressor operates
continuously.
Excessive head pressure.
Head pressure too low.
Excessive suction pressure.
Suction pressure too low.
Evaporator fan will not shut off.
Compressor makes excessive
noise (48TF007 scroll only).
CAUSE
Power failure.
Fuse blown or circuit breaker tripped.
Defective thermostat, contactor, transformer, or
control relay.
Insufficient line voltage.
Incorrect or faulty wiring.
Thermostat setting too high.
Faulty wiring or loose connections in compressor
circuit.
Compressor motor burned out, seized, or internal
overload open.
Defective run/start capacitor, overload, start relay.
One leg of three-phase power dead.
Refrigerant overcharge or undercharge.
Defective compressor.
Insufficient line voltage.
Blocked condenser.
Defective run/start capacitor, overload, or start
relay.
Defective thermostat.
Faulty condenser-fan motor or capacitor.
Restriction in refrigerant system.
Dirty air filter.
Unit undersized for load.
Thermostat set too low.
Low refrigerant charge.
Leaking valves in compressor.
Air in system.
Condenser coil dirty or restricted.
Dirty air filter.
Dirty condenser coil.
Refrigerant overcharged.
Air in system.
Condenser air restricted or air short-cycling.
Low refrigerant charge.
Compressor valves leaking.
Restriction in liquid tube.
High head load.
Compressor valves leaking.
Refrigerant overcharged.
Dirty air filter.
Low refrigerant charge.
Metering device or low side restricted.
Insufficient evaporator airflow.
Temperature too low in conditioned area.
Outdoor ambient below 25 F.
Time off delay not finished.
Compressor rotating in wrong direction.
45
REMEDY
Call power company.
Replace fuse or reset circuit breaker.
Replace component.
Determine cause and correct.
Check wiring diagram and rewire correctly.
Lower thermostat setting below room temperature.
Check wiring and repair or replace.
Determine cause. Replace compressor.
Determine cause and replace.
Replace fuse or reset circuit breaker. Determine cause.
Recover refrigerant, evacuate system, and recharge to
nameplate.
Replace and determine cause.
Determine cause and correct.
Determine cause and correct.
Determine cause and replace.
Replace thermostat.
Replace.
Locate restriction and remove.
Replace filter.
Decrease load or increase unit size.
Reset thermostat.
Locate leak; repair and recharge.
Replace compressor.
Recover refrigerant, evacuate system, and recharge.
Clean coil or remove restriction.
Replace filter.
Clean coil.
Recover excess refrigerant.
Recover refrigerant, evacuate system, and recharge.
Determine cause and correct.
Check for leaks; repair and recharge.
Replace compressor.
Remove restriction.
Check for source and eliminate.
Replace compressor.
Recover excess refrigerant.
Replace filter.
Check for leaks; repair and recharge.
Remove source of restriction.
Increase air quantity. Check filter and replace if
necessary.
Reset thermostat.
Install low-ambient kit.
Wait for 30-second off delay.
Reverse the 3-phase power leads as described in the
Start-Up section on page 36.
Table 35 — Durablade Economizer Troubleshooting
PROBLEM
Damper does not open.
CAUSE
Indoor (evaporator) fan is off.
No power to economizer motor.
Economizer motor failure.
Economizer operation
limited to minimum
position.
OAT or EC set too high.
Verify economizer control board
is correctly wired and works
properly.
Check SAT.
Damper does not close.
Incorrect wiring of economizer.
Verify economizer control board
is functioning properly.
Check SAT.
Economizer motor failure.
Economizer damper does Verify that close-on-power-loss
not close on power loss. and economizer control board
are functioning properly.
C1
EC
IFC
IFO
OAT
PL
SAT
SW
—
—
—
—
—
—
—
—
REMEDY
1. Check to ensure that 24 vac is present at terminal C1 on the IFC or that
24 vac is present at the IFO terminal. Check whether 24 vac is present at
PL6-1 (red wire) and/or PL6-3 (black wire). If 24 vac is not present, check wiring (see unit label diagram).
2. Check proper thermostat connection to G on the connection board.
1. Check that SW3 is properly making contact with the damper blade. Check
that SW1 is in the NC (normally closed) position.
2. Check diode D18. If diode is not functioning properly, replace D18.
3. Confirm that the economizer control board is grounded properly at PL6-4
(brown wire) and at brown terminal of the economizer control board (brown
wire). The economizer motor must also be grounded properly at the negative
motor terminal (brown wire).
4. Verify SW1 and SW3 are working and wired properly (see unit label diagram).
5. Check for 24 vac input at both PL6-1 (red wire) and PL6-3 (black wire). If
24 vac not present, check unit wiring (see unit label diagram). If 24 vac is
found in both places, check for 24 vac at the yellow terminal of the economizer control board (yellow wire). If 24 vac power is not present, replace the
economizer control board.
If the indoor (evaporator) fan and economizer motor are energized, verify that
there is a minimum of 18 vdc at the positive motor terminal. If the motor is not
operating, replace the motor.
1. Set at correct temperature (3 F below indoor space temperature).
2. Check OAT or EC by setting above outdoor temperature or humidity level. If
the OAT or EC switches do not close, replace OAT or EC.
1. Perform the following tests when OAT or EC is closed, Y1 is called for and
damper is at minimum position. Confirm 24 vac on gray terminal of the economizer control board (gray wire). If 24 vac is not present, check wiring (see
unit label diagram).
2. Verify that SW1 and SW3 are wired correctly and working properly (see unit
label diagram).
3. Check to ensure that 24 vac exists at PL6-2 (blue wire). If 24 vac is not
present, check wiring (see unit wiring label diagram).
4. Check 24 vac output at PL6-10 (white wire). If 24 vac is not present, replace
economizer control board.
1. After verifying that the OAT and EC settings and the economizer control
board wiring are correct, check to ensure that the 24 vac terminal of the SAT
has 24 vac (white wire). If OAT, EC, and control board are functioning and
wired properly and no 24 vac exists, check wiring (see unit label diagram).
2. If supply-air temperature is greater than 57 F, 24 vac should be found at
terminal T2 on the SAT (pink wire). If 24 vac is not present, replace SAT.
1. Verify that SW2 and SW4 are wired and working properly (see unit label
diagram.).
2. Check diode D19. If diode is not functioning properly, replace D19.
1. After verifying that the wiring is correct, modulate the damper to the minimum
position. Remove the calls for G.
2. If the damper does not move, check for 24 vac at PL6-1 (red wire). If 24 vac is
not present, check wiring (see unit label diagram).
3. If damper still does not move, check for 24 vac at blue terminal of economizer
control board (blue wire). If 24 vac is not present, replace the economizer circuit board.
1. After verifying that the wiring is correct and the economizer control board is
functioning properly, place the OAT or EC switch in the closed position. Place
a call for Y1 and open the damper to the fully open position. Confirm that the
24 vac terminal of the SAT has 24 vac (white wire). If 24 vac is not present,
check wiring (see unit label diagram).
2. If supply-air temperature is less than 52 F, 24 vac should be found at terminal
T1 on the SAT (violet wire). If 24 vac not found, replace SAT.
If economizer control board and SAT are functioning properly, verify that there is
a minimum of 18 vdc at the positive motor terminal. If a minimum of 18 vdc is
present and the motor is still not operating, replace the motor.
1. Check voltage potential across batteries. If lower than 14 vdc, replace closeon-power-loss power supply (9-v alkaline batteries). It is recommended that
you check this emergency power supply on a regular basis or whenever the
filters are changed.
2. If the close-on-power-loss and economizer control board are functioning
properly, check for 14 vdc or higher at the blue terminal of the economizer
control board (blue wire) when power is disconnected from unit. If 14 vdc is
not present, replace the control board.
LEGEND
Common Power
Enthalpy Control
Indoor (Evaporator) Fan Contactor
Indoor (Evaporator) Fan On
Outdoor-Air Thermostat
Plug
Supply-Air Thermostat
Economizer Position Switch
46
Table 36 — EconoMi$er Troubleshooting
PROBLEM
Damper does not open.
CAUSE
Indoor (evaporator) fan is Off.
No power to EconoMi$er
controller.
No power to G terminal.
Controller fault.
Thermostat fault.
Actuator fault.
EconoMi$er operation
limited to minimum
position.
Damper position less
than minimum position
set point.
Damper does not return
to minimum position.
Damper does not close
on power loss.
Minimum position set incorrectly.
EconoMi$er changeover setpoint set too high or too low.
Supply-Air Temperature Sensor
faulty.
OAT Sensor faulty
Supply-Air Low Limit Strategy
controlling.
CO2 Ventilation Strategy
controlling
Damper travel is restricted.
REMEDY
Check to ensure that 24 vac is present at terminal C1 (Common Power) on the
IFC (Indoor Evaporator Fan Contactor) or that 24 vac is present at the IFO
(Indoor Evaporator Fan On) terminal. Check whether 24 vac is present at PL
(Plug) 6-1 (red wire) and/or PL6-3 (black wire). If 24 vac is not present, check
wiring (see unit label diagram).
Check proper thermostat connection to G on the connection board.
Check to ensure that 24 vac is present across Terminals 24 VAC and 24V COM
on the EconoMi$er control. If 24 vac is not present, check wiring (see unit label
diagram). If 24 vac is present, STATUS light should be on constantly.
If IFM is on, check to ensure 24 vac is present on G terminal of the EconoMi$er
controller. If 24 vac is not present, check wiring (see unit label diagram).
If STATUS light is flashing one flash, the EconoMi$er controller is experiencing a
fault condition. Cycle power to the controller. If condition continues, replace the
EconoMi$er controller.
If STATUS light is flashing two flashes, the EconoMi$er controller senses the
thermostat is wired incorrectly. Check wiring between the thermostat and the
connection board in the electrical panel. The fault condition is caused by Y2
being energized before Y1.
Check the wiring between the EconoMi$er controller and the actuator.
Hold CONFIG button between three and ten seconds to verify the actuator’s
operation. (This process takes three minutes to complete.)
Verify that the MIN POS (%) is set greater than zero. Adjust MIN POS (%) to
100% to verify operation, and then set to correct setting.
Set at correct value. See Table 3.
If STATUS light is flashing four flashes, the Supply-Air Temperature Sensor is
faulty. Check wiring or replace sensor.
If STATUS light is flashing five flashes, the OAT sensor is faulty. Check wiring or
replace sensor.
The supply-air temperature is less than 45 F, causing the minimum position to
decrease. Refer to the Start-Up instructions. Verify correct setting of MIN POS
(%). If correct, EconoMi$er is operating correctly.
If CO2 sensor is being used, and the damper position is greater than minimum
position, the ventilation control strategy is controlling. Refer to the Start-Up
instructions. EconoMi$er is operating correctly.
Check to ensure the damper is not blocked.
LEGEND
OAT — Outdoor-Air Temperature
47
Fig. 53 — Typical Wiring Diagram and Component Arrangement
48
LEGEND FOR FIG. 53 — TYPICAL WIRING SCHEMATIC AND COMPONENT ARRANGEMENT
IMPORTANT: Refer to unit wiring label for actual unit wiring
information.
AHA
C
CAP
CC
COMP
D
EC
ECON
EPS
—
—
—
—
—
—
—
—
—
EQUIP
ER
FPT
FU
GND
HPS
HS
I
IDM
IFC
IFM
IGC
LPS
LS
MGV
MTR
OAT
OFM
OLR
PL
QT
R
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
RS
SAT
SEN
SW1
SW2
SW3
SW4
TC
TDR
TH
TRAN
Adjustable Heat Anticipator
Contactor, Compressor
Capacitor
Cooling Compensator
Compressor Motor
Diode
Enthalpy Control
Economizer
Emergency Power Supply
(Nine Volt Battery)
Equipment
Economizer Relay
Freeze Up Protection Thermostat
Fuse
Ground
High-Pressure Switch
Hall-Effect Sensor
Ignitor
Induced-Draft Motor
Indoor Fan Contactor
Indoor (Evaporator) Fan Motor
Integrated Gas Unit Controller
Low-Pressure/Loss-of-Charge Switch
Limit Switch
Main Gas Valve
Motor
Outdoor-Air Thermostat
Outdoor (Condenser) Fan Motor
Overload Relay
Plug Assembly
Quadruple Terminal
Relay
—
—
—
—
—
—
—
—
—
—
—
Rollout Switch
Supply Air Thermostat
Sensor
Switch Fully Open
Switch Fully Closed
Switch Min. Vent Position
Switch Max. Vent Position
Thermostat-Cooling
Time-Delay Relay
Thermostat-Heating
Transformer
Field Splice
Marked Wire
Terminal (Marked)
Terminal (Unmarked)
Terminal Block
Splice
Splice (Marked)
Factory Wiring
Field Control Wiring
Field Power Wiring
Accessory or Optional Wiring
To indicate common potential only;
not to represent wiring.
NOTES:
1. If any of the original wire furnished must be replaced, it must be replaced with type 90 C wire or
its equivalent.
2. Three-phase motors are protected under primary single-phasing conditions.
3. Thermostat: HH07AT170, 172, 174 and P272-2783 Subbase: HH93AZ176, 178 and
P272-1882, 1883.
4. Set heat anticipator at .14 amp. For units with 2 stages of heating, set stage two anticipator at
.14 amp.
5. Use copper conductors only.
6. TRAN is wired for 230-v unit. If unit is to be run with 208-v power supply, disconnect BLK wire
from 230-v tap (ORN) and connect to 208-v tap (RED). Insulate end of 230-v tap.
49
Copyright 2000 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 111
Catalog No. 534-80000
Printed in U.S.A.
Form 48TF-1SI
Pg 50
8-00
Replaces: New
Book 1 4
Tab 1a 6a
(Remove and Use in Job File)
I. PRELIMINARY INFORMATION:
MODEL NO.: _________________________________
SERIAL NO.: ______________________________________
DATE: _______________________________________
TECHNICIAN: ____________________________________
BUILDING LOCATION: _____________________________
II. PRE-START-UP (insert checkmark in box as each item is completed)
VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT
REMOVE ALL SHIPPING HOLDDOWN BOLTS AND BRACKETS PER INSTALLATION INSTRUCTIONS
VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS
VERIFY THAT FLUE HOOD IS INSTALLED
CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS
CHECK TO ENSURE NO WIRES ARE TOUCHING REFRIGERANT TUBING OR SHARP EDGES
CHECK GAS PIPING FOR LEAKS
CHECK THAT INDOOR-AIR FILTER IS CLEAN AND IN PLACE
VERIFY THAT UNIT INSTALLATION IS LEVEL
CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE AND SETSCREW TIGHTNESS
VERIFY PULLEY ALIGNMENT AND BELT TENSION ARE CORRECT
III. START-UP:
ELECTRICAL
SUPPLY VOLTAGE
L1-L2 _________
L2-L3
__________
L3-L1
__________
COMPRESSOR AMPS
L1
_________
L2
__________
L3
__________
INDOOR-FAN AMP
L1
_________
L2
__________
L3
__________
TEMPERATURES
OUTDOOR-AIR TEMPERATURE
__________
DB
_________
WB
RETURN-AIR TEMPERATURE
__________
DB
_________
WB
COOLING SUPPLY AIR
__________
DB
_________
WB
GAS HEAT SUPPLY AIR
__________
DB
PRESSURES
GAS INLET PRESSURE
__________
IN. WG
GAS MANIFOLD PRESSURE
__________
IN. WG (LOW FIRE)
________
IN. WG (HI FIRE)
REFRIGERANT SUCTION
__________
PSIG
________
TEMP ° F
REFRIGERANT DISCHARGE
__________
PSIG
________
TEMP ° F
VERIFY REFRIGERANT CHARGE USING CHARGING TABLES
VERIFY THAT 3-PHASE SCROLL COMPRESSOR IS ROTATING IN CORRECT DIRECTION (48TF007 ONLY)
Copyright 2000 Carrier Corporation
Book
Tab
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
1 4
PC 111
Catalog No. 534-80000
Printed in U.S.A.
Form 48TF-1SI
Pg CL-1
8-00
Replaces: New
1a 6a
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - CUT ALONG DOTTED LINE
CUT ALONG DOTTED LINE
START-UP CHECKLIST