Braeburn 140404 Installation Manual page 9

3.6
Heat Pump Equipment Wiring
NOTE: For Conventional Systems, see Section 3.5
Connect a single or multi-stage heat pump system to the zone panel as shown. A conventional thermostat
may be used with a heat pump system, however, emergency heat will be controlled by the panel emergency
heat switch or the optional remote emergency heat switch. For a single stage system, the auxiliary heat
control is not used.
ALWAYS PROVIDE DISCONNECT AND OVERLOAD PROTECTION AS REQUIRED
1 HEAT / 1 COOL - No Auxiliary Heat
Set Equipment Type to SSH
Rh 24 VAC Power (Heating Transformer)
Rc Connected to Rh with Jumper
O/B Changeover Valve [Note 4]
Y1 Compressor Call (1st Stage Heating/Cooling)
G Fan Call
C
24 VAC Transformer Common
2 HEAT / 2 COOL - No Auxiliary Heat
Set Equipment Type to MSH
Rh
24 VAC Power (Heating Transformer)
Rc Connected to Rh with Jumper
O/B Changeover Valve [Note 4]
L Optional System Fault Monitor
Y1
Compressor Call Stage 1 (1st Stage Heating/Cooling)
Y2
Compressor Call Stage 2 (2nd Stage Heating/Cooling)
G Fan Call
C
24 VAC Transformer Common
2 HEAT / 1 COOL - With Auxiliary Heat
Set Equipment Type to MSH
Rh 24 VAC Power (Heating Transformer)
Rc
Connected to Rh with Jumper
O/B Changeover Valve [Note 4]
L Optional System Fault Monitor
W2 Auxiliary Heat Relay (2nd Stage Heating) [Note 5]
Y1 Compressor Call Stage 1 (1st Stage Heating/Cooling)
E
Emergency Heat Call
G
Fan Call
C 24 VAC Transformer Common
3 HEAT / 2 COOL - With Auxiliary Heat
Set Equipment Type to MSH
Rh
24 VAC Power (Heating Transformer)
Rc Connected to Rh with Jumper
O/B Changeover Valve [Note 4]
L Optional System Fault Monitor
AX1
Auxiliary Heat Relay (3rd Stage Heating)
Y1
Compressor Call (1st Stage Heating/Cooling)
Y2 Compressor Call (2nd Stage Heating/Cooling)
E
Emergency Heat Call
G Fan Call
C
24 VAC Transformer Common
4 HEAT / 2 COOL - With Auxiliary Heat
Set Equipment Type to MSH
Rh 24 VAC Power (Heating Transformer)
Rc
Connected to Rh with Jumper
O/B Changeover Valve [Note 4]
L
Optional System Fault Monitor
AX1 Auxiliary Heat Relay (3rd Stage Heating)
AX2
Auxiliary Heat Relay (4th Stage Heating)
Y1
Compressor Call (1st Stage Heating/Cooling)
Y2 Compressor Call (2nd Stage Heating/Cooling)
E
Emergency Heat Call
G Fan Call
C
24 VAC Transformer Common
NOTES
[4] O (cool active) or B (heat active) is selected in the installer
settings menu.
[5] Install a field supplied jumper between the W2/AX2 and
W1/E/AX1 terminals if there is no separate emergency heat
relay installed.
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