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Wiring Diagrams
The following is just a sample of the most common types of HVAC
systems. Refer to your system’s installation manual for wiring information.
Robertshaw 9515 Multi-Stage Thermostat
C R Y2 Y1 W1 G W2 O B
C R
Y/Y1
W1 G W2
2 Stage Heat / 1 Stage Cool
Robertshaw 9515 Multi-Stage Thermostat
C R Y2 Y1 W1 G W2 O B
C R Y2 Y1 W1 G W2
2 Stage Heat / 2 Stage Cool