Fig. 6-1 Typical Field Control Wiring Diagram; Fig. 6-2 Typical Field Power Wiring Diagram - York EHK-08G Installation Instructions Manual

14
THERMOSTAT
R
G
Y
W
B
C

Fig. 6-1 Typical Field Control Wiring Diagram

*** 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.
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

Fig. 6-2 Typical Field Power Wiring Diagram

UNIT CONTROL BOARD
THERMINAL STRIP
**
R
G
Y
*
W
1
W
2
***
B
C
CAUTION
Field-supplied disconnect
240V
208V
COM
Single
p h a s e
p o w e r
supply