50
TO AVOID POSSIBLE ELECTRICAL SHOCK, PERSONAL INJURY,
OR DEATH, DISCONNECT THE POWER BEFORE SERVICING.
WARNING
!
ACCESSORIES WIRING DIAGRAMS
EMERGENCY
HEAT
RELAY
13
42
BLUE
WHITE
BLACK
BROWN
THERMOSTAT
OT/EHR18-60 #2
2
1
From Air Handler
CGW2 R
CRW2OY
From Outdoor Unit
C
G
W2
E
R
O
Y
Indoor Thermostat
W3
W3
B
L
UE
GREEN
WHI
T
E
RED
BROWN
B
L
UE
R
E
D
W
H
IT
E
ORAN
G
E
YELLOW
15kw and Above with Two OT/EHR18-60's, Two Stage Electric Heat and Two Stage Thermostat
HEAT
RELAY
EMERGENCY
THERMOSTAT
1
4
3
2
1
2
BROWN
BLACK
WHITE
BLUE
OT/EHR18-60 #1
RED
RED
Typical Wiring Schematics for OT/EHR18-60 (Outdoor Thermostat & Emergency Heat Relay).
This wiring diagram is for reference only. Not all wiring is as shown above.
Refer to the appropriate wiring diagram for the unit being serviced.
Comments to this Manuals