Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.PC 111 Catalog No. 534-80003 Printed in U.S.A. Form 48TF-1W Pg 1 2-01 Replaces: NewBook 1 4
Tab 1a 6a
Wiring DiagramsDIAGRAM INDEX
*Low NOx/California compliant units.
UNIT LABEL DIAGRAMUnit 48TF Voltage-Phase-Hertz Type Label Diagram Figure No.
004,005
208/230-1-60 Schematic/Component Arrangement 50DK508460 1208/230-3-60 Schematic/Component Arrangement 50DK508515 2
460-3-60 Schematic/Component Arrangement 50DK508518 3575-3-60 Schematic/Component Arrangement 50DK508521 4
208/230-3-60* Schematic/Component Arrangement 50DK509082 5460-3-60* Schematic/Component Arrangement 50DK509084 6
006
208/230-1-60 Schematic/Component Arrangement 50DK508514 7208/230-3-60 Schematic/Component Arrangement 50DK508516 8
460-3-60 Schematic/Component Arrangement 50DK508519 9575-3-60 Schematic/Component Arrangement 50DK508522 10
208/230-3-60* Schematic/Component Arrangement 50DK509083 11460-3-60* Schematic/Component Arrangement 50DK509085 12
007208/230-3-60 Schematic/Component Arrangement 50DK508517 13
460-3-60 Schematic/Component Arrangement 50DK508520 14575-3-60 Schematic/Component Arrangement 50DK508523 15
008-014208/230-3-60 Schematic/Component Arrangement 50DK508790 16
460-3-60 Schematic/Component Arrangement 50DK508791 17575-3-60 Schematic/Component Arrangement 50DK508792 18
ACCESSORY WIRINGDescription Unit Size Fig. No.
Motormaster® I Control 004-014 19
Motormaster II Control004-007 20008-014 21
Time Guard® II Device 004-014 22Solid-State Enthalpy Control 004-014 23Differential Enthalpy Control 004-014 24
EconoMi$er 004-014 25EconoMi$er Sensor Wiring 004-014 26
Power Exhaust 004-014 27
48TF004-0143 to 121/2 Tons
Gas Heating/Electric Cooling Units
2
LEGENDAHA — Adjustable Heat AnticipatorC — Contactor, CompressorCAP. — CapacitorCB — Circuit BreakerCC — Cooling CompensatorCOMP — Compressor MotorD — DiodeEC — Enthalpy ControlECON — EconomizerEPS — Emergency Power Supply
(Nine-Volt Battery)EQUIP — EquipmentER — Economizer RelayFPT — Freeze-Up Protection ThermostatGND — GroundHPS — High-Pressure SwitchHS — Hall Effect SensorI — IgnitorIDM — Induced-Draft MotorIFC — Indoor-Fan ContactorIFM — Indoor-Fan MotorIFMOVL— Indoor-Fan Motor OverloadIGC — Integrated Gas Unit ControllerLED — Light-Emitting DiodeLPS — Low-Pressure SwitchLS — Limit SwitchMGV — Main Gas ValveMTR — MotorOAT — Outdoor-Air ThermostatOFC — Outdoor-Fan ContactorOFM — Outdoor-Fan MotorOLR — Overload RelayP — PlugPL — Plug AssemblyQT — Quadruple TerminalR — Relay
RS — Rollout SwitchSAT — Supply-Air ThermostatSEN — SensorST — Start ThermistorSW1 — Switch Fully OpenSW2 — Switch Fully ClosedSW3 — Switch Minimum Vent PositionSW4 — Switch Maximum Vent PositionTC — Thermostat, CoolingTDR — Time-Delay RelayTH — Thermostat, HeatingTRAN — Transformer
Field Splice
Marked Wire
Terminal (Marked)
Terminal (Unmarked)
Terminal Block
Splice
Splice (Marked)Factory WiringField Control WiringField Power WiringAccessory or Optional WiringTo indicate common potential only.Not to represent wiring.
Ground
| ( Capacitor
3
NOTES FOR FIG. 1, 71. If any of the original wire furnished must be replaced, it must be
replaced with Type 90 C wire or its equivalent.2. Thermostat:
HH07AT170, 172, 174, and P272-2783Subbase:HH93AZ176, 178, and P272-1882, 1883
3. Set heat anticipator at .14 amp for units with 2 stages of heating.Set stage two anticipator at .14 amps.
4. Use copper conductors only.5. 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 and connect to 208-vtap (RED). Insulate end of 230-v tap (ORN).
NOTES FOR FIG. 2, 5, 8, 11, 13, 161. 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 P272-2783Subbase: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 amps.
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 connectto 208-v (RED). Insulate end of 230-v tap.
NOTES FOR FIG. 3, 4, 6, 9, 10, 12, 14, 15, 17, 181. 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 P272-2783Subbase: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 amps.
5. Use copper conductors only.
4
Fig. 1 — Schematic/Component Arrangement; 48TFE,TFF004,005, 48TFD005; 208/230-1-60
5
Fig. 1 — Schematic/Component Arrangement; 48TFE,TFF004,005, 48TFD005; 208/230-1-60 (cont)
6
Fig. 2 — Schematic/Component Arrangement; 48TFE,TFF004,005, 48TFD005; 208/230-3-60
7
Fig. 2 — Schematic/Component Arrangement; 48TFE,TFF004,005, 48TFD005; 208/230-3-60 (cont)
8
Fig. 3 — Schematic/Component Arrangement; 48TFE,TFF004,005, 48TFD005; 460-3-60
9
Fig. 3 — Schematic/Component Arrangement; 48TFE,TFF004,005, 48TFD005; 460-3-60 (cont)
10
Fig. 4 — Schematic/Component Arrangement; 48TFE,TFF004,005, 48TFD005; 575-3-60
11
Fig. 4 — Schematic/Component Arrangement; 48TFE,TFF004,005, 48TFD005; 575-3-60 (cont)
12
Fig. 5 — Schematic/Component Arrangement; Low NOx 48TFL004,005, 48TFM004,005; 48TFN004,005;California Compliant 48TFG,TFH,TFK004,005; 208/230-3-60
13
Fig. 5 — Schematic/Component Arrangement; Low NOx 48TFL004,005, 48TFM004,005; 48TFN004,005;California Compliant 48TFG,TFH,TFK004,005; 208/230-3-60 (cont)
14
Fig. 6 — Schematic/Component Arrangement; Low NOx 48TFL004,005, 48TFM004,005, 48TFN004,005;California Compliant 48TFG,TFH,TFK004,005; 460-3-60
15
Fig. 6 — Schematic/Component Arrangement; Low NOx 48TFL004,005, 48TFM004,005, 48TFN004,005;California Compliant 48TFG,TFH,TFK004,005; 460-3-60 (cont)
16
Fig. 7 — Schematic/Component Arrangement; 48TF006; 208/230-1-60
17
Fig. 7 — Schematic/Component Arrangement; 48TF006; 208/230-1-60 (cont)
18
Fig. 8 — Schematic/Component Arrangement; 48TF006; 208/230-3-60
19
Fig. 8 — Schematic/Component Arrangement; 48TF006; 208/230-3-60 (cont)
20
Fig. 9 — Schematic/Component Arrangement; 48TF006; 460-3-60
21
Fig. 9 — Schematic/Component Arrangement; 48TF006; 460-3-60 (cont)
22
Fig. 10 — Schematic/Component Arrangement; 48TF006; 575-3-60
23
Fig. 10 — Schematic/Component Arrangement; 48TF006; 575-3-60 (cont)
24
Fig. 11 — Schematic/Component Arrangement; Low NOx 48TFL006, 48TFM006, 48TFN006;California Compliant 48TFG,TFH,TFK006; 208/230-3-60
25
Fig. 11 — Schematic/Component Arrangement; Low NOx 48TFL006, 48TFM006, 48TFN006;California Compliant 48TFG,TFH,TFK006; 208/230-3-60 (cont)
26
Fig. 12 — Schematic/Component Arrangement; Low NOx 48TFL006, 48TFM006, 48TFN006;California Compliant 48TFG,TFH,TFK006; 460-3-60
27
Fig. 12 — Schematic/Component Arrangement; Low NOx 48TFL006, 48TFM006, 48TFN006;California Compliant 48TFG,TFH,TFK006; 460-3-60 (cont)
28
Fig. 13 — Schematic/Component Arrangement; 48TF007; 208/230-3-60
29
Fig. 13 — Schematic/Component Arrangement; 48TF007; 208/230-3-60 (cont)
30
Fig. 14 — Schematic/Component Arrangement; 48TF007; 460-3-60
31
Fig. 14 — Schematic/Component Arrangement; 48TF007; 460-3-60 (cont)
32
Fig. 15 — Schematic/Component Arrangement; 48TF007; 575-3-60
33
Fig. 15 — Schematic/Component Arrangement; 48TF007; 575-3-60 (cont)
34
Fig. 16 — Schematic/Component Arrangement; 48TF008-014; 208/230-3-60
35
Fig. 16 — Schematic/Component Arrangement; 48TF008-014; 208/230-3-60 (cont)
36
Fig. 17 — Schematic/Component Arrangement; 48TF008-014; 460-3-60
37
Fig. 17 — Schematic/Component Arrangement; 48TF008-014; 460-3-60 (cont)
38
Fig. 18 — Schematic/Component Arrangement; 48TF008-014; 575-3-60
39
Fig. 18 — Schematic/Component Arrangement; 48TF008-014; 575-3-60 (cont)
40
Fig. 19 — Motormaster® I Wiring Details
Fig. 20 — Motormaster II Wiring Schematic, 48TF004-007
48TF008-014
48TF004-007
LEGENDC — Contactor
LEGEND
*The Motormaster II head pressure controlleris equipped with an alternate operatingmode. When this mode is selected, the con-troller shifts the fan cycle sequence to effec-tively raise the average condensingtemperature approximately 20 F higher thanthe standard operating mode. In this alternatemode, the outdoor fan begins cycling athigher outdoor ambient temperatures. Thismode should only be used if the evaporatorcoil shows signs of frosting at low outdoorambient temperatures.To select the alternate operating mode, movethe jumper wire on the Motormaster II controlboard from reset T1 to reset T2.
NOTE: Motormaster II transformer is wired for460-v supply; it must be rewired for 208/230-vapplication. Be sure to insulate unused tap.Refer to color code.
C — ContactorOFC — Outdoor-Fan ContactorTRAN — Transformer
41
LEGEND
*The Motormaster® II head pressure controller is equipped with an alternate operating mode.When this mode is selected, the controller shifts the fan cycle sequence to effectively raise theaverage condensing temperature approximately 20 F higher than the standard operating mode.In this alternate mode, the outdoor fan begins cycling at higher outdoor ambient temperatures.This mode should only be used if the evaporator coil shows signs of frosting at low outdoorambient temperatures.To select the alternate operating mode, move the jumper wire on the Motormaster II controlboard from reset T1 to reset T2.
NOTE: Motormaster II transformer is wired for 460-v supply; it must be rewired for 208/230-vapplication. Be sure to insulate unused tap. Refer to color code.
C — ContactorOFC — Outdoor-Fan ContactorTRAN — Transformer
Fig. 21 — Motormaster II Wiring Schematic, 48TF008-014
42
12 3
BRN
COMPRESSORSAFETIES
BRN
CLO
TIME GUARD I I DEVICE
CORCR
T1 T3 T2
ECONOMIZEROR
Y1 OR Y2*
12 3
BRN
COMPRESSORSAFETIES
BRN
CLO
TIME GUARD I I DEVICE
CORCR
T1 T3 T2
ECONOMIZEROR
Y1 OR Y2*
HIGH EFFICIENCY 3 TO 121/2 TON ROOFTOP UNITS
STANDARD EFFICIENCY 3 TO 121/2 TON ROOFTOP UNITS
LEGEND
*Per compressor circuit.Fig. 22 — Time Guard® II Device, 48TF004-014
C — ContactorCLO — Compressor LockoutCR — Control Relay
620 ohmJUMPER
}24 VAC SUPPLY FROMECONOMIZER CONTROLSECTION (RED TO TR,BRN TO TR1)TO SENSOR MOUNTEDON BACK OF CONTROL
}
GRAY WIRE FROMECONOMIZER HARNESS
RED WIRE FROMECONOMIZER SWITCH 3(NORMALLY CLOSED)
TR TR1
SO +
+SR
2 3
1
LED
AB
CD
NOTE: Switches shown in high enthalpy state. Terminals 2 and 3close on enthalpy decrease.
Fig. 23 — Wiring Connections for Solid-StateEnthalpy Control (HH57AC077)
LED
AB C
D
TR TR1
SO
SR
23
1
+
+ S+
(HH57AC078SENSOR)
24 VAC SUPPLY FROMECONOMIZER CONTROLSECTION (RED TO TR,BRN TO TR1)
TO SENSOR MOUNTEDON BACK OF CONTROL
GRAY WIRE FROMECONOMIZER HARNESS
RED WIRE FROMECONOMIZER SWITCH 3(NORMALLY CLOSED)
NOTES:1. Remove factory-installed jumper across SR and + before con-
necting wires from HH57AC078 sensor.2. Switches shown in high outdoor-air enthalpy state. Terminals 2
and 3 close on low outdoor air enthalpy relative to indoor airenthalpy.
Fig. 24 — Wiring Connections for DifferentialEnthalpy Control (HH57AC077 and HH57AC078)
43
Fig. 25 — EconoMi$er Wiring
OUTDOORAIRSENSOR
TEMPTEMP
COMOUTPWR
BROWN
VIOLET
WHITERED
BROWNTEMPTEMPCOMOUTPWR
RETURNAIRSENSOR
VIOLETWHITE
RED
OAT
COM
OAH
-15 V
RAT
COM
RAH
+15 V
ECONOMI$ERCONTROLLER
PINK TEMP
TEMPVIOLET
SUPPLY AIRTEMPERATURE SENSOR
V+ 24
COM VAC
SENSORCO2
(+)COMDAT
COMREM POT
COMLED
COM
CO2
CO2
Fig. 26 — EconoMi$er Sensor Wiring, 48TF004-014
LEGEND
OAT — Outdoor-Air Thermostat
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.PC 111 Catalog No. 534-80003 Printed in U.S.A. Form 48TF-1W Pg 44 2-01 Replaces: NewBook 1 4
Tab 1a 6a
Copyright 2001 Carrier Corporation
4-PINCONNECTOR
PLUG
L1
L2
GREEN
112 2
3 34 4
GND
230 VAC1 PHASE
GREEN/YELLOW
3
2
1
5 8
6 9 B
A74
LT. BLUE
BLACKBROWN
C1
BLUE
GREEN/YELLOW
3
2
1
5 8
6 9 B
A74
LT. BLUE
BLACKBROWN
C1
BLUE
FAN 2
FAN 1
BLACK
BLACK
BLACK
R124 VAC
R224 VAC
BLACK
BLUE
1
2
3BROWN
ORANGE
3-PINCONNECTOR
PLUG
YELLOW
RED YEL
H1
BLU GRAY
H4
SECONDARY230VAC
X4 X1
HT
01
AH
85
0(4
60
VA
C)
RED
H1
GRAY
H2
SECONDARY230VAC
X4 X1
HT
01
AH
85
9(5
75
VA
C)
2313
11 21230VAC
OR
BLACK L1
BLUE L2
COMPRESSOR 1CONTACTOR
FIELD SUPPLIEDWIRING
GREEN GND
2 x 4 IN.HANDY BOX
X3X2
H2H3
X2 X3
TO FUSEDDISCONNECT
Fig. 27 — Wiring Diagram for Power Exhaust System