Wiring - Robertshaw RS10420T Installation Manual

WIRING

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