Braeburn Builder 1000NC, User Manual

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4
NOTES - Conventional Systems
[1] If batteries are installed the 24 Volt AC common connection is optional
[2] Remove factory installed jumper for dual transformer systems
[3] In dual transformer systems, transformer common must come from
cooling transformer
[4]
If needed for system
Provide disconnect and overload protection as required.
2 HEAT / 1 COOL Single Transformer (1200NC Only)
Set System Type to
NORM
R 24 Volt AC Power
W1 Heat Relay Stage 1
W2 Heat Relay Stage 2
Y1 Compressor Relay Stage 1
G Fan Relay
C 24 Volt AC Transformer Common [note 1]
Conventional Systems
(cont.)
Typical Wiring Configurations
NOTE: The “Installer Switch” option will be configured in the next step.
Heat Pump Systems
1 HEAT / 1 COOL - No Auxiliary Heat
Set Installer Switch to
HP
Rh* 24 Volt AC Power
Rc* Connected to Rh with supplied Jumper Wire
O or B Changeover Valve [note 2]
Y1 Compressor Relay (appears as Y1 on 1200NC)
G Fan Relay
C 24 Volt AC Transformer Common [note 1]
2 HEAT / 1 COOL - Including Auxiliary Heat (1200NC only)
Set Installer Switch to HP
R 24 Volt AC Power
O or B
Changeover Valve
[note 2]
Y1 Compressor Relay (1st stage heating/cooling)
W2
Auxiliary Heat Relay (2nd stage heating)
[note 3]
W1/E Emergency Heat Relay [note 3]
G
Fan Relay
C 24 Volt AC Transformer Common [note1]
(Continued)
*Appears as R on 1200NC (single transformer)