Lutron Electronics 33-00155EFS Installation Manual page 7

Wiring
1H/1C Heat Pump (no auxiliary heat)
Rc
Power [1]
R [R+Rc joined by jumper]
O/B
Changeover valve [4]
Y Compressor relay
G
Fan relay
C 24VAC common
S1
Optional outdoor/remote sensor
2H/1C Heat Pump (with auxiliary heat)
L
Equipment monitor [5]
Aux/E Auxiliary/Emergency heat relay (Heat 2)
Rc
Power [1]
R [R+Rc joined by jumper]
O/B
Changeover valve [4]
Y Compressor relay
G
Fan relay
C 24VAC common
S1
Optional outdoor/remote sensor
See [notes] below
[1] Power supply. Provide disconnect means and overload protection as required.
[4] O/B set to control as either O or B in installer setup.
[5] Heat pump reset (powered continuously when thermostat is set to Em. Heat; system monitor when
set to Heat, Cool, or Off).
2H/2C Heat Pump (no auxiliary heat)
Y2 Compressor 2 relay
Rc
Power [1]
R [R+Rc joined by jumper]
O/B
Changeover valve [4]
Y Compressor 1 relay
G Fan relay
C 24VAC common
S1 Optional outdoor/remote sensor
3H/2C Heat Pump (with auxiliary heat)
Y2
Compressor 2 relay
L Equipment monitor [5]
Aux/E Auxiliary/Emergency heat relay (Heat 2)
Rc Power [1]
R [R+Rc joined by jumper]
O/B Changeover valve [4]
Y Compressor 1 relay
G
Fan relay
C 24VAC common
S1
Optional outdoor/remote sensor
7