Connect Your Wires - Braeburn 2020 Detailed User Manual

2
Provide Power
• For 24 Volt AC power, you must connect the common side of the trans-
former to the C terminal on the thermostat sub-base.
• For primary or back-up power, insert the 2 supplied "AA" type alkaline
batteries into the battery compartment located in the rear housing of the
thermostat. Make sure to position the Positive (+) and Negative (-) sides
of the batteries correctly with the +/- symbols in the battery compartment.
3

Connect Your Wires

Wiring Terminations
Terminal
Rc Input
Rh Input
O Output
B Output
Y1 Output
G Output
W1 Output
C Input
Additional Terminations (2220 only)
Terminal
W1/E Output
Y2 Output
W2 Output
Function Description
24 Volt AC Cooling Transformer
(Dual Transformer Systems Only)
Power Connection (24 Volt AC Heating
Transformer or Millivolt Power Source)
Reversing Valve (Cool Active)
Reversing Valve (Heat Active)
Compressor Relay
Fan Control
Conventional Heat Relay
24 Volt AC Transformer Common
Function Description
(W1) 1st Stage Conventional Heat
(E) Emergency Heat Relay
2nd Stage Conventional Cooling Compressor
2nd Stage Heat / Auxiliary Heat
C
3
24VAC Power
Terminal (C)