Robertshaw RS10420T - Wiring

Installation Tip
Do not overtighten terminal block screws, as this can damage the
terminal block. A damaged terminal block can keep the thermostat
from tting on the subbase correctly or cause system operation issues.
Max Torque = 6in/lbs.
WIRING
6
Terminal Designations
CONVENTIONAL
HVAC
Y1
Y2 W/E W2 0 B
HEAT PUMP
COOL MODE
STAGE 1
HEAT 1
COOL 1
HEAT 2
COOL 2
HEAT 2
AUX 1
HEAT 3
AUX 2
HEAT 3
AUX 2
HEAT 2
AUX 2
HEAT PUMP
REVERSING
VALVE -
ENERGIZED
DURING
COOLING
HEAT PUMP
REVERSING
VALVE -
ENERGIZED
DURING
HEATING
HEAT 3
EMHEAT
HEAT 4
EMHEAT
AUX 1
AUX 1
HEAT 2
COOL 2
HEAT 2
COOL 2
1H / 1C
2H / 1C
3H / 1C
2H / 2C
3H / 2C
4H / 2C
COOL MODE
STAGE 2
HEAT MODE
STAGE 1
HEAT MODE
STAGE 2
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