73
PTC and PTH - C Models
SCHEMATICS
Wiring is subject to change, always refer to the wiring diagram on the unit for the most up-to-date wiring.
1ST STAGE
ANTICIPATOR
CURRENT: .1
2ND STAGE
ANTICIPATOR
CURRENT: .1
2 RIBBED WIRE MUST BE CONNECTED AS SHOWN
NOTES :
4 ON UNITS WITH FRONT DESK CONTROL SWITCH.
GN1
CONTROL
PANEL
CHAS SIS
WIRE LEGEND
HIGH VOLTAGE
(FACTORY)
HIGH VOLTAGE
(FACTORY OR FIELD)
LOW VOLTAGE
(FACTORY OR FIELD)
WIRING DIAGRAM
20319701
1 WARNING: DISCONNECT POWER BEFORE SERVICING. WIRING TO UNIT MUST BE PROPERLY POLARIZED (FOR 265V) AND GROUNDED.
3 ON HEAT PUMP MODELS ONLY.
5 BK18 ON LINE 2 WITH FUSE SHOWN CONNECTED FOR 265V. FOR 230V, CONNECT POWER CORD TO LINE 2.
6 CONNECTED TO APPROPRIATE TERMINAL AT FACTORY.
HEAT PUMP W/AUXILIARY
ELECTRIC HEAT
CONNECT
R TO:
-----
G, Y/W1
G,B,Y/W1
G, W2
FUNCTION
OFF
COOL
1ST STAGE
HEAT
2ND STAGE
HEAT
COOLING UNIT
W/ELECTRIC HEAT
CONNECT
R TO:
G, Y/W1
G, W2
OR
G,B,Y/W1
FUNCTION
COOL
OFF
-----
REMOTE THERMOSTAT OPERATION
HEAT
G
FAN
G
FAN
*
* FOR A HEAT PUMP
THERMOSTAT USED
ON A STRAIGHT
COOL UNIT
R
C
S
RD13
YL10
F
C
H
RIBBED
WIRE
GN
2
RE
V
VA
LV
E
SO
L
E
N
O
ID
BK19
3
BR14
WH15
COMP
OD
FA N/COMP
CAP
BK20
1
FAN
MOTOR
LINE 1
HEATER
HEATER
LINE 2
COMP
FA N HIGH
FAN LOW
R-VALVE
BK18
5
VT12
TERMINAL
BLOCK
RD14
(PV)
BK16
RD17
RD33
USE COPPER
CONDUCTORS ONLY
230V
265V
6
FRONT
DESK
SWITCH
4
RMT/STD
THERMOSTAT
CONTROL
ON / OFF
MASTER
SWITCH
EH IN LS
TF1
C R GL W2
B GH
AUXILIARY
REMOTE THERMOSTAT
FUSE
ON / AUTO
FAN
CYCLE
ALL OFF
C
B
A
D
P6
BL
U
E
P5
RE
D
P3
BL
A
C
K
OUTDOOR
COIL
INDOOR
COIL
INDOOR
AIR
8
Y/W1
FD2
FD1
TF2
ELECTRIC
HEATER
3
7 FOR R EMOTE OPER ATION, S ET SWITCH TO R MT POS ITION
WA
R
N
IN
G
