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507296-02C Page 11 of 12mrcool.com
Figure 8. Connections Diagram - A/C Constant Torque
208/230-1-60
POWER SUPPLY WITH MIN.
75
C COPPER WIRE
G
W1
C
R
YEL W/ STRIPE
CONTROL CIRCUIT
WIRING TO BE 24 VOLT,
N.E.C. CLASS 2
L1
T1
T2
L2
C
H
F
OUTDOOR
FAN
MOTOR
C12
DUAL
CAPACITOR
COMPRESSOR
C
S
R
537663-01
GRY
RED
BLK
208V
240V
24V
INDOOR
BLOWER
MOTOR
NOTE:
IF ANY OF THE ORIGINAL
WIRE IS REPLACED THE
SAME SIZE AND TYPE WIRE
MUST BE USED.
USE COPPER CONDUCTOR
ONLY, MIN 75
C WIRE
LINE VOLTAGE FIELD INSTALLED
WARNING-
ELECTRIC SHOCK HAZARD. UNIT
MUST BE GROUNDED IN ACCORDANCE
WITH NATIONAL AND LOCAL CODES.
YEL
Y
WHT
GRN
5 & 7.5KW HEATER ACCESSORIES
FUNCTION OFF W1 ONLY.
BLK
J2-1
J2-2
BLK
C
1
2
3
4
5
J2-6
J2-5
WHT
BLU
RED
YEL
WHT
B1
PUR
B4
BLACK
ORG
L
N
G
B3
S1
TRANSFORMER
TI
L
G
N
BLK
K1-1
CONTACTOR
YEL W/ STRIPE
CONTACTOR
K1-2
BLU
BLU
GRN
CONTACTOR
KI
YEL
BLK
J2-4
NOTE: TAP1 FOR FAN ONLY
TAP 2 FOR COOLING
TAP3 FOR HIGH STATIC COOLING
TAP4 AND TAP5 FOR ELECTRIC HEAT- REFER TO HEATING LABEL
BLK W/ STRIPE
YEL
THERMAL PROTECTION
SWITCH (IF USED)
YEL
YEL
HIGH PRESSURE
SWITCH
LOW PRESSURE
SWITCH (IF USED)
J1: PLUG THROUGH CONTROL PANEL (12 PIN)
J2: PLUG FOR ACCESSORY HEAT (6 PIN)
INDOOR BLOWER MOTOR
B-3
J1-3
J1-1
J1-2
J1-12
S4
S79
S173
J1-11
CONNECTION DIAGRAM
A/C (CONSTANT TORQUE BLOWER)
SINGLE PHASE
THERMOSTAT
W1 & W2 CAN BE USED TO STAGE
ELECTRIC HEAT ACCESSORY ON
10, 15 & 20KW MODELS
CRANK
CASE
HEATER
(IF USED)
BLK
BLK
HR1
Wiring Diagrams
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