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Single Stage Heat – Boiler
Example: Bosch Greenstar Gas Condensing Boilers*
▶ Ensure the system has a C-wire
▶ Ensure the pre-installed jumper wire remains between RH and RC
▶ Remove the jumper from the thermostat connection on the boiler and
connect the two terminals to RH and W/E on the thermostat.
▶ *NOTE: Bosch Greenstar boilers will require an external transformer to power the
thermostat. The two power wire should connect to R/RC and C on the Thermostat.
Combined Single Stage Heat Furnace and
Single Stage Cool Air Conditioner
▶ Ensure the system has a C-wire
▶ Remove the pre-installed jumper wire from between RH and R/RC
▶ Connect the R, C, W1 and G wires from the Furnace to RH, C,
W/E and G terminals on the wall plate, respectively
▶ Connect the R, C, Y1 and G wires from the Air Conditioner to R/RC,
C, Y and G terminals on the wall plate, respectively
Wiring Diagrams
R/RC
R/RC
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