Specifications

78
Wiring is subject to change, always refer to the wiring diagram on the unit for the most up-to-date wiring.
WARNING
SCHEMATICS
PTH and PTC-G, K & M Models
(Condensate Pump)
2
NOTES :
TO UNIT MUST BE PROPERLY POLARIZED (FOR 265V) AND GROUNDED.
3
4
GN1
CONTROL
PANEL
CHASS IS
WIRE LEGEND
HIGH VOLTAGE
(FACTORY)
HIGH VOLTAGE
(FACTORY OR FIELD)
LOW VOLTAGE
(FACTORY OR FIELD)
R
C
S
RD13
YL10
FCH
BR34
BR34
RD33
RIBBED
WIR E
GN
2
NOTES :
1
REV
VALVE
SOLENOID
19
GN1
CONTROL
PANEL
CHASS IS
WIRE LEGEND
HIGH VOLTAGE
(FACTORY)
HIGH VOLTAGE
(FACTORY OR FIELD)
3
BR14
WH15
LOW VOLTAGE
(FACTORY OR FIELD)
COMP
OD
FAN/COMP
CAP
1ST STAGE
ANTICIPATOR
CURRENT: .1
2ND STAGE
ANTICIPATOR
CURRENT: .1
ELE CTRIC
HEATER
20
1
3
5
A
CON DE NS A TE
RE L A Y
2
4
6
B
CON DEN S A TE
PUMP
1
FAN
MOTOR
VT12
5
POWER CORD TO LINE 2.
6
265V AND 115V TRANSFORMER NOT SHOWN.
2
4
0
2
0
8
C
O
M
L
O
A
D
LINE
TRANSFORMER
OR8
(CP)
7
6
YL1
(CP)
YL5
(CP)
YL3
(CP)
BK1 6
RD17
WH6
(CP)
-----
G, Y/W1
G,B,Y/W1
G, W2
FUNCTION
OFF
COOL
G, Y/W1
FUNCTION
COOL
OFF
-----
REMOTE THERMOSTAT OPERATION
HEAT
G
FAN
G
FAN
* FOR A HEAT PUMP
THERMOSTAT USED
ON A STRAIGHT
COOL UNIT
USE COPPER
CONDUCTORS ONLY
FRONT
DESK
SWITCH
4
1ST STAGE
ANTICIPATOR
CURRENT: .1
2ND STAGE
ANTICIPATOR
CURRENT: .1
2
4
0
2
0
8
C
O
M
L
O
A
D
LINE
TRANSFORMER
8
GY21
GY22
BK37
BK18
5
7
BK37
8
265V AND 115V TRANSFORMER NOT SHOWN.
9
LINE 1
E1
HEATER 1
HEA TER 2
REV
VALVE
FAN
LOW
FAN
HI GH
K1 K2
K3
E2 E3 E4 E5 E6 E7 E8
E9 E10
LINE 2
CO MPR ES SOR
K4
K5 K6
E11
E12
ON / O FF
MASTER SWITC H
COM A COM B
CP4
SW2
P10 P1 1
DS1
P13
IAT
BLACK
P2
P5
CR11
X1
X3
X2
X4
M2
M1
P1
P4P8P9
IDT
YELL OWGREEN
OCT
BLUE
ICT
RED
24VAC~TRANSFORMER
12VA CL ASS 2 ONLY
DS2 MS1
MS2
EH
IN
LS FD1
FD2
TF- TF+ C R
AUXILIAR Y
GL W2 Y/W1 B GH
REMOTE THERMOSTATE
ORANG E
WARNING: D ISCONNECT POW ER BEFORE SERVICING. WIRING
RIBBED WIRE MUST BE CONNECTED A S SHO WN.
ON HEAT PUMP MODELS ONLY.
ON UNITS WITH FRONT DESK CONTROL SWITCH.
BK18 ON LINE 2 WITH FUSE SHOWN CONNECTED FOR 265V. FOR 230V AND 115V, CONNECT
IF SUPPLY VOLTAGE IS 208V MOVE 240V LEAD TO 208V TAP ON TRANSFORMER.
FOR REMOTE OPERATION, SEE CONFIGURATION CHART.
IF SUPPLY VOLTAGE IS 208V, MOVE 204V LEAD TO 208V TAP ON TRANSFORMER.
FOR CONTINUOS FAN OPERATION SEE CONFIGURATION CHART.
COOLING UNIT
W/ELECTRIC HEAT
HEAT PUMP W/AUXILIARY
ELECTRIC HEAT
CONNECT
R TO:
CONNECT
R TO:
G, W2
OR
G,B,Y/W1*
1ST STAGE
HEAT
2ND STAGE
HEAT