48TF004-014
3 to 121/2 Tons
Gas Heating/Electric Cooling Units
Wiring Diagrams
DIAGRAM INDEX
Unit 48TF
004,005
006
007
008-014
Voltage-Phase-Hertz
208/230-1-60
208/230-3-60
460-3-60
575-3-60
208/230-3-60*
460-3-60*
208/230-1-60
208/230-3-60
460-3-60
575-3-60
208/230-3-60*
460-3-60*
208/230-3-60
460-3-60
575-3-60
208/230-3-60
460-3-60
575-3-60
UNIT LABEL DIAGRAM
Type
Schematic/Component Arrangement
Schematic/Component Arrangement
Schematic/Component Arrangement
Schematic/Component Arrangement
Schematic/Component Arrangement
Schematic/Component Arrangement
Schematic/Component Arrangement
Schematic/Component Arrangement
Schematic/Component Arrangement
Schematic/Component Arrangement
Schematic/Component Arrangement
Schematic/Component Arrangement
Schematic/Component Arrangement
Schematic/Component Arrangement
Schematic/Component Arrangement
Schematic/Component Arrangement
Schematic/Component Arrangement
Schematic/Component Arrangement
Label Diagram
50DK508460
50DK508515
50DK508518
50DK508521
50DK509082
50DK509084
50DK508514
50DK508516
50DK508519
50DK508522
50DK509083
50DK509085
50DK508517
50DK508520
50DK508523
50DK508790
50DK508791
50DK508792
Figure No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
*Low NOx/California compliant units.
ACCESSORY WIRING
Description
Unit Size
004-014
Motormaster® I Control
004-007
Motormaster II Control
008-014
004-014
Time Guard® II Device
004-014
Solid-State Enthalpy Control
004-014
Differential Enthalpy Control
004-014
EconoMi$er
004-014
EconoMi$er Sensor Wiring
004-014
Power Exhaust
Fig. No.
19
20
21
22
23
24
25
26
27
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: New
Book 1 4
Tab 1a 6a
LEGEND
AHA
C
CAP.
CB
CC
COMP
D
EC
ECON
EPS
—
—
—
—
—
—
—
—
—
—
EQUIP —
ER
—
FPT
—
GND
—
HPS
—
HS
—
I
—
IDM
—
IFC
—
IFM
—
IFMOVL—
IGC
—
LED
—
LPS
—
LS
—
MGV —
MTR
—
OAT
—
OFC
—
OFM
—
OLR
—
P
—
PL
—
QT
—
R
—
Adjustable Heat Anticipator
Contactor, Compressor
Capacitor
Circuit Breaker
Cooling Compensator
Compressor Motor
Diode
Enthalpy Control
Economizer
Emergency Power Supply
(Nine-Volt Battery)
Equipment
Economizer Relay
Freeze-Up Protection Thermostat
Ground
High-Pressure Switch
Hall Effect Sensor
Ignitor
Induced-Draft Motor
Indoor-Fan Contactor
Indoor-Fan Motor
Indoor-Fan Motor Overload
Integrated Gas Unit Controller
Light-Emitting Diode
Low-Pressure Switch
Limit Switch
Main Gas Valve
Motor
Outdoor-Air Thermostat
Outdoor-Fan Contactor
Outdoor-Fan Motor
Overload Relay
Plug
Plug Assembly
Quadruple Terminal
Relay
RS
SAT
SEN
ST
SW1
SW2
SW3
SW4
TC
TDR
TH
TRAN
—
—
—
—
—
—
—
—
—
—
—
—
Rollout Switch
Supply-Air Thermostat
Sensor
Start Thermistor
Switch Fully Open
Switch Fully Closed
Switch Minimum Vent Position
Switch Maximum 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.
Ground
|(
2
Capacitor
NOTES FOR FIG. 1, 7
1. 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 P272-2783
Subbase:
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-v
tap (RED). Insulate end of 230-v tap (ORN).
NOTES FOR FIG. 2, 5, 8, 11, 13, 16
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 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 connect
to 208-v (RED). Insulate end of 230-v tap.
NOTES FOR FIG. 3, 4, 6, 9, 10, 12, 14, 15, 17, 18
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 amps.
5. Use copper conductors only.
3
Fig. 1 — Schematic/Component Arrangement; 48TFE,TFF004,005, 48TFD005; 208/230-1-60
4
Fig. 1 — Schematic/Component Arrangement; 48TFE,TFF004,005, 48TFD005; 208/230-1-60 (cont)
5
Fig. 2 — Schematic/Component Arrangement; 48TFE,TFF004,005, 48TFD005; 208/230-3-60
6
Fig. 2 — Schematic/Component Arrangement; 48TFE,TFF004,005, 48TFD005; 208/230-3-60 (cont)
7
Fig. 3 — Schematic/Component Arrangement; 48TFE,TFF004,005, 48TFD005; 460-3-60
8
Fig. 3 — Schematic/Component Arrangement; 48TFE,TFF004,005, 48TFD005; 460-3-60 (cont)
9
Fig. 4 — Schematic/Component Arrangement; 48TFE,TFF004,005, 48TFD005; 575-3-60
10
Fig. 4 — Schematic/Component Arrangement; 48TFE,TFF004,005, 48TFD005; 575-3-60 (cont)
11
Fig. 5 — Schematic/Component Arrangement; Low NOx 48TFL004,005, 48TFM004,005; 48TFN004,005;
California Compliant 48TFG,TFH,TFK004,005; 208/230-3-60
12
Fig. 5 — Schematic/Component Arrangement; Low NOx 48TFL004,005, 48TFM004,005; 48TFN004,005;
California Compliant 48TFG,TFH,TFK004,005; 208/230-3-60 (cont)
13
Fig. 6 — Schematic/Component Arrangement; Low NOx 48TFL004,005, 48TFM004,005, 48TFN004,005;
California Compliant 48TFG,TFH,TFK004,005; 460-3-60
14
Fig. 6 — Schematic/Component Arrangement; Low NOx 48TFL004,005, 48TFM004,005, 48TFN004,005;
California Compliant 48TFG,TFH,TFK004,005; 460-3-60 (cont)
15
Fig. 7 — Schematic/Component Arrangement; 48TF006; 208/230-1-60
16
Fig. 7 — Schematic/Component Arrangement; 48TF006; 208/230-1-60 (cont)
17
Fig. 8 — Schematic/Component Arrangement; 48TF006; 208/230-3-60
18
Fig. 8 — Schematic/Component Arrangement; 48TF006; 208/230-3-60 (cont)
19
Fig. 9 — Schematic/Component Arrangement; 48TF006; 460-3-60
20
Fig. 9 — Schematic/Component Arrangement; 48TF006; 460-3-60 (cont)
21
Fig. 10 — Schematic/Component Arrangement; 48TF006; 575-3-60
22
Fig. 10 — Schematic/Component Arrangement; 48TF006; 575-3-60 (cont)
23
Fig. 11 — Schematic/Component Arrangement; Low NOx 48TFL006, 48TFM006, 48TFN006;
California Compliant 48TFG,TFH,TFK006; 208/230-3-60
24
Fig. 11 — Schematic/Component Arrangement; Low NOx 48TFL006, 48TFM006, 48TFN006;
California Compliant 48TFG,TFH,TFK006; 208/230-3-60 (cont)
25
Fig. 12 — Schematic/Component Arrangement; Low NOx 48TFL006, 48TFM006, 48TFN006;
California Compliant 48TFG,TFH,TFK006; 460-3-60
26
Fig. 12 — Schematic/Component Arrangement; Low NOx 48TFL006, 48TFM006, 48TFN006;
California Compliant 48TFG,TFH,TFK006; 460-3-60 (cont)
27
Fig. 13 — Schematic/Component Arrangement; 48TF007; 208/230-3-60
28
Fig. 13 — Schematic/Component Arrangement; 48TF007; 208/230-3-60 (cont)
29
Fig. 14 — Schematic/Component Arrangement; 48TF007; 460-3-60
30
Fig. 14 — Schematic/Component Arrangement; 48TF007; 460-3-60 (cont)
31
Fig. 15 — Schematic/Component Arrangement; 48TF007; 575-3-60
32
Fig. 15 — Schematic/Component Arrangement; 48TF007; 575-3-60 (cont)
33
Fig. 16 — Schematic/Component Arrangement; 48TF008-014; 208/230-3-60
34
Fig. 16 — Schematic/Component Arrangement; 48TF008-014; 208/230-3-60 (cont)
35
Fig. 17 — Schematic/Component Arrangement; 48TF008-014; 460-3-60
36
Fig. 17 — Schematic/Component Arrangement; 48TF008-014; 460-3-60 (cont)
37
Fig. 18 — Schematic/Component Arrangement; 48TF008-014; 575-3-60
38
Fig. 18 — Schematic/Component Arrangement; 48TF008-014; 575-3-60 (cont)
39
48TF004-007
LEGEND
C — Contactor
48TF008-014
Fig. 19 — Motormaster® I Wiring Details
LEGEND
C
— Contactor
OFC — Outdoor-Fan Contactor
TRAN — Transformer
*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 the average 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 outdoor
ambient temperatures.
To select the alternate operating mode, move
the jumper wire on the Motormaster II control
board from reset T1 to reset T2.
NOTE: Motormaster II transformer is wired for
460-v supply; it must be rewired for 208/230-v
application. Be sure to insulate unused tap.
Refer to color code.
Fig. 20 — Motormaster II Wiring Schematic, 48TF004-007
40
LEGEND
C
— Contactor
OFC — Outdoor-Fan Contactor
TRAN — Transformer
*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 the
average 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 outdoor
ambient temperatures.
To select the alternate operating mode, move the jumper wire on the Motormaster II control
board from reset T1 to reset T2.
NOTE: Motormaster II transformer is wired for 460-v supply; it must be rewired for 208/230-v
application. Be sure to insulate unused tap. Refer to color code.
Fig. 21 — Motormaster II Wiring Schematic, 48TF008-014
41
BRN
TIME GUARD I I DEVICE
BRN
T1
T3
2
T2
3
1
CLO
ECONOMIZER
OR
Y1 OR Y2*
COMPRESSOR
SAFETIES
C
OR
CR
HIGH EFFICIENCY 3 TO 121/2 TON ROOFTOP UNITS
BRN
TIME GUARD I I DEVICE
BRN
T1
T3
2
T2
3
1
CLO
ECONOMIZER
OR
Y1 OR Y2*
COMPRESSOR
SAFETIES
C
OR
CR
STANDARD EFFICIENCY 3 TO 121/2 TON ROOFTOP UNITS
LEGEND
C
— Contactor
CLO — Compressor Lockout
CR
— Control Relay
*Per compressor circuit.
Fig. 22 — Time Guard® II Device, 48TF004-014
24 VAC SUPPLY FROM
A
B
TR
TR1
C SO
D
+
SR
+
2
3
CONTROL
} ECONOMIZER
SECTION (RED TO TR,
BRN TO TR1)
SENSOR MOUNTED
} TO
ON BACK OF CONTROL
A
620 ohm
JUMPER
B
TR
C
D SO
TR1
SR
+
GRAY WIRE FROM
ECONOMIZER HARNESS
2
TO SENSOR MOUNTED
ON BACK OF CONTROL
S (HH57AC078
+ SENSOR)
3
1
1
LED
+
24 VAC SUPPLY FROM
ECONOMIZER CONTROL
SECTION (RED TO TR,
BRN TO TR1)
GRAY WIRE FROM
ECONOMIZER HARNESS
LED
RED WIRE FROM
ECONOMIZER SWITCH 3
(NORMALLY CLOSED)
RED WIRE FROM
ECONOMIZER SWITCH 3
(NORMALLY CLOSED)
NOTE: Switches shown in high enthalpy state. Terminals 2 and 3
close on enthalpy decrease.
NOTES:
1. Remove factory-installed jumper across SR and + before connecting 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 air
enthalpy.
Fig. 23 — Wiring Connections for Solid-State
Enthalpy Control (HH57AC077)
Fig. 24 — Wiring Connections for Differential
Enthalpy Control (HH57AC077 and HH57AC078)
42
LEGEND
OAT
— Outdoor-Air Thermostat
Fig. 25 — EconoMi$er Wiring
BROWN
ECONOMI$ER
CONTROLLER
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. 26 — EconoMi$er Sensor Wiring, 48TF004-014
43
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
LT. BLUE
21
230VAC
13
BROWN
23
FAN 1
C1
GREEN/
YELLOW
4-PIN
CONNECTOR
PLUG
2 x 4 IN.
HANDY BOX
BLACK L1
1
BLUE
L2 2
GREEN GND
3
4
L1
1
L2
2
GND
3
4
230 VAC
1 PHASE
3
6
9
2
5
8
1
4
7
B
BLACK
R1
24 VAC
3-PIN
CONNECTOR
PLUG
A
BLUE
ORANGE
1
YELLOW
2
BROWN
3
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. 27 — Wiring Diagram for Power Exhaust System
Copyright 2001 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. 534-80003
Printed in U.S.A.
Form 48TF-1W
Pg 44
2-01
Replaces: New
Book 1 4
Tab 1a 6a