14
CAUTION
Label all wire prior to disconnection when servicing controls. Wiring errors
can cause improper and dangerous operation. Verify proper operation after
servicing.
CONTACTOR
GROUND
LUG
Refer to electrical data tables
to size the disconnect
Field-supplied disconnect
Single
phase
power
supply
Fig. 6-2 Typical Field Power Wiring Diagram
R
G
Y
W
C
R
G
Y
W
1
W
2
C
t l
o v
4 2
r
e
m r
o f s
n a r
t
THERMOSTAT
UNIT CONTROL BOARD
TERMINAL STRIP
*** B wire be used with heat pump system only, reversing valve energizes at
the heating mode, and cut off at the cooling mode.
** Minimum wire size of 18 AWG wire should be used for all field installed
24 volt wire.
* Only required on units with supplemental electric heat.
Fig. 6-1 Typical Field Control Wiring Diagram
B
B
240V
208V
COM
***
*
**