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21
EXISTING HEAT PUMP CONTROLS
LOW VOLTAGE 24 VAC COIL
O/A sensor terminals
in control cover
Through grommet
R2 RELAY
R1 RELAY
factory wiring
to circulator outlet
The top three screws only
on the 5 pole terminal strip
1
6
4
5
3
8 7
LOW VOLTAGE
( by installer )
New T'stat Wire
34
1
6 5
8 7
Compressor
Fan Control
24 VAC hot
24 VAC com.
factory wiring
HIGH VOLTAGE ( ORANGE) from control board
HIGH VOLTAGE ( N )
SPLICE
( by installer )
( by installer )
HIGH VOLTAGE ( L1 )
( by installer )
N
L
set 3° above existing t'stat
( by installer )
New T'stat Wire
Existing T'stat
set 3° below new t'stat
Existing T'stat
Wiring
( by installer )
LOW VOLTAGE
SPLICE
RG C RG C
New T'stat
W1
O/B
YL
Change-over valve
AUX Heat
Emergency Heat
SPLICE
( by installer )
RED
WHITE
GREEN
1
5
3
L
O/B
W1
Y
( by installer )
L Y CG R
O/B
W1
Grainger# 2XC01- Omron LY2F 24V
Grainger#2XC02-Omron LY2F 120V