77
Wiring is subject to change, always refer to the wiring diagram on the unit for the most up-to-date wiring.
PTH and PTC-G, K & M Models
WA
R
N
IN
G
LINE 1
E 1
HEATE R 1
HE ATER 2
RE V
V AL VE
FA N
LOW
K 1
K2
K 3
E 2
E3
E4
E 5
E6
E 7
E8
E9
E 10
LINE 2
CO MPRE SS OR
K 4
K5
K6
E1
1
E
1
2
O N / O FF
MASTER S WITCH
COM A
CO M B
CP4
SW 2
P10
P11
DS 1
P 13
IA T
B LA CK
P 2
P 5
CR11
X1
X3
X2
X 4
M2
M1
P1
P4
P8
P9
ID
T
YE
L
L
O
W
GR
E
E
N
OC
T
BL
U
E
IC
T
RE
D
24
V
A
C
~
T
R
A
N
S
F
O
R
M
E
R
1
2
V
A
C
L
AS
S 2
O
N
L
Y
DS2 MS1 MS 2 EH IN L S FD1 FD2 TF- TF+ C
R
AUXI LIARY
GL W2 Y /W1
B GH
REMOTE THERMOSTATE
OR
A
N
G
E
HIG H
FA N
TO UNIT MUST BE PROPERLY POLARIZED (FOR 265V) AND GROUNDED.
4
POWER CORD TO LINE 2.
NOTES:
5
6
2
3
7
IF SUPPLY VOLTAGE IS 265V USE THE 265V TAP ON TRANSFORMER.
115V TRANSFORMER NOT SHOWN.
8
NOTES:
1 WARNING: DISCONNECT POWER BEFORE SERVICING. WIRING
RIBBED WIRE MUST BE CONNECTED AS SHOWN
ON HEAT PUMP MODELS ONLY.
ON UNITS WITH FRONT DESK CONTROL SWITCH.
BK18 ON LINE 2 WITH FUSE SHOWN CONNECTED FOR 265V. FOR 230V & 115V, CONNECT
FOR REMOTE OPERATION, SEE CONFIGURATION CHART.
IF SUPPLY VOLTAGE IS 208V/230V USE THE 230V TAP ON TRANSFORMER.
FOR CONTINUOS FAN OPERATION SEE CONFIGURATION CHART.
23
0
26
5
CO
M
TRANSFORMER
LO
AD
CONNECT
COOL UNIT
G, Y/W1
R TO:
G, W2
-----
2ND STAGE
G
CONTROL
HIGH VOLTAGE
COOL
1ST STAGE
LOW VOLTAGE
THERMOSTAT USED
HIGH VOLTAGE
HEAT
(FACTORY OR FIELD)
CURRENT: .1
OFF
W/ELECTRIC HEAT
(FACTORY)
CONDUCTORS ONLY
ON A STRAIGHT
WIRE LEGEND
CURRENT: .1
OFF
2ND STAGE
CHASSIS
G,B,Y/W1
REMOTE THERMOSTAT OPERATION
ANTICIPATOR
FUNCTION
*
COOLING UNIT
G, Y/W1
USE COPPER
ELECTRIC HEAT
G
FAN
ANTICIPATOR
FUNCTION
* FOR A HEAT PUMP
OR
COOL
G,B,Y/W1
-----
G, W2
GN1
R TO:
HEAT PUMP W/AUXILIARY
FAN
PANEL
CONNECT
1ST STAGE
(FACTORY OR FIELD)
HEAT
SOLENOID
COMP
R
MOTOR
SWITCH
BK18
YL10
WH15
BR14
ELECTRIC
GY22
C
REV
CAP
H
HEATER
4
1
DESK
2
F
19
WIRE
FRONT
RD17
FAN
RD13
BK16
S
OD
VALVE
C
GN
RIBBED
FAN/COMP
3
5
20
FUSE
BK37
BK37
GY21
RD33
7
VT12
BR34
BR34
6
G, W2
(FACTORY OR FIELD)
(FACTORY)
G, Y/W1
GN1
LOW VOLTAGE
WIRE LEGEND
HIGH VOLTAGE
-----
CONNECT
PANEL
G,B,Y/W1
-----
HIGH VOLTAGE
CHASSIS
R TO:
CONTROL
(FACTORY OR FIELD)
HEAT
SCHEMATICS
