URC THZ-100 Owners Manual - Page 7

Wiring Your THZ-100 Thermostat, Single Stage Furnace and Single Stage A/C

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THZ-100 THERMOSTAT Wiring Your THZ-100 Thermostat Definitions • RH - Heating System 24VAC • RC - Cooling System 24VAC • C - 24VAC Transformer Common • G - Indoor Unit Fan Connection • W1 - 1st Stage Heat • W2 - 2nd Stage Heat • Y1 - 1st Stage Cooling • Y2 - 2nd Stage Cooling • B - Reversing Valve (Heating) • O - Reversing Value (Cooling) • S+ - Wired Sensor • S- - Wired Sensor Single Stage Furnace and Single Stage A/C Page 3

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Page 3
Wiring Your THZ-100 Thermostat
Definitions
• RH – Heating System 24VAC
• RC – Cooling System 24VAC
• C – 24VAC Transformer Common
• G – Indoor Unit Fan Connection
• W1 – 1st Stage Heat
• W2 – 2nd Stage Heat
• Y1 – 1st Stage Cooling
• Y2 – 2nd Stage Cooling
• B - Reversing Valve (Heating)
• O - Reversing Value (Cooling)
• S+ - Wired Sensor
• S- - Wired Sensor
Single Stage Furnace and Single Stage A/C
THZ-100 T
HERMOSTAT