6
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Variable Speed Heat Pump Wiring
-6-
Module VAR Variable Speed Heat Pump
Installation & Specs (6/8)
OUTDOOR UNIT INVERTER HEATPUMP
L/L1 N/L2 G
208-240V / 50-60HZ
May 2018
G
W1
Y2
Y1
C
R
W2
A3
A2
A1
L
N
W1
W2
C
R
Y2
Y1
D
O/B
G
FZ
W1
Y2
Y1
FZ
W2
C
R
INDOOR UNIT / PSB or
HEB Circuit Board
THERMOSTAT
P
Pump activates with
2nd stage call for heat
W1 - 1st
Stage Heat
(Inverter)
W2 - 2nd
Stage Heat
(Hydronic)
24V INPUT
External
Relay
2 (W1)
1 (Y2)
3 (Not used)
4 (Not used)
C
C (24v)
R (24v)
24V OUTPUT
1
1
2
2
3
3
(Not Used)
S2
S1
(No Sensor)
(Suction Line
Sensor)
(Mid Coil
Sensor)
S2
S1
L1
L2
G
INTERFACE PANEL
*Temperature sensors
can be extended, use
same gauge or larger.
