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HEAT-PUMP (COMPRESSOR) STYLE HEAT/COOL SYSTEM [typical wire color used]
R (or RC/RH) = 24(+) VAC Power, Cool [RED]
O = Reversing Valve [ORANGE]
Y1 = Heat Pump Outdoor Unit [YELLOW]
G = Blower Fan [GREEN]
W2 = Auxiliary/Emergency Heat [WHITE]
C = 24(-) VAC Common [BLUE]
B** = Reversing Valve (only if no “O” wire- [can vary per each installation]
ie: Rheem/Ruud/Bard systems)
Note: There should NOT be a wire used on the W1 wire connection at terminal.
** IMPORTANT: If you have both an O wire and B wire (ie: Trane system), please install B to the “C” terminal
4.1b Wiring Terminal Reference: Heat Pump Systems (without LUX Power Bridge)
Referencing your wiring photo, attach your thermostat wires to the LUX/GEO using your original wiring
letters and the following terminal reference as a guide based upon your system type.
GAS / OIL / ELECTRIC FURNACE and/or AIR CONDITIONING [typical wire color used]
RH (or R) = 24(+) VAC Power, Heat [RED]
W1 = 1st Stage Heat [WHITE]
G = Blower Fan [GREEN]
C = 24(-) VAC Common [BLUE]
Y1 = 1st Stage Cool [YELLOW]
(other)
RC = 24(+) VAC Power, Cool [can vary per each installation]
B = Heat Mode Damper [can vary per each installation]
O = Cool Mode Damper [can vary per each installation]
W2 = 2nd Stage Heat [can vary per each installation]
Y2 = 2nd Stage Cool [can vary per each installation]
IMPORTANT: If you have both an RC and RH wire present, remove the RED shorting cap inside of GEO
(the YELLOW shorting cap must only be on one pin, not both).
Wiring is complete - you may return “cover” between terminal blocks
.
Wiring for methods: #1 C-wire, #3 Micro-USB, and #4 Battery Power
4.1a Wiring Terminal Reference: Conventional Furnace - gas/oil/electric & air-
conditioning (without LUX Power Bridge)
Referencing your wiring photo & terminal guide below, wire to GEO.
IMPORTANT: For Heat Pump applications, the YELLOW shorting cap must be across both metal pins
instead of the default of just one. Also, there will NOT be a wire connected to the “W1” terminal.
Wiring is complete - you may return “cover” between terminal blocks
.
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