18
Figure 9. Typical Thermostat Connections
G R C W/E
O Y
Thermostat
G R
W
Thermostat
Y
C
Y
G R
W
Thermostat
Y
C
Air
Handler
Air
Conditioner
Y
Typical Air Conditioner with
Standard Air Handler
G R C E
O Y
Thermostat
Typical Heat Pump with
Standard Air Handler
Typical Air Conditioner with
Variable Speed Air Handler
Typical Heat Pump with
Variable Speed Air Handler
G R
W2
C
O
Y1
Thermostat
O
Y1
R
C
G R
W/E
Thermostat
Y1
C
Y1
W2
Typical 2-Stage Air Conditioner
with Variable Speed Air Handler
Typical 2-Stage Heat Pump with
Variable Speed Air Handler
Y2
Y2
Y2
Y2 OUT
W/E
R
Air
Conditioner
Air
Handler
Air
Conditioner
Air
Handler
Heat Pump
Air
Handler
Heat Pump
O
R
C
Y
Air
Handler
Heat Pump
NOTE:
Jumper between
W2 & E is required when
no OD T-Stat is used.
W1
Y
G
R
C
NOTE:
Jumper W1 & W2
together if not using W2
on thermostat
Y1
W2
W1
O
Y/Y2
G
R
C
Y1
W2
W1
O
Y/Y2
G
R
C
W2
Air
Handler
W1
Y
G
R
C
R
C
Y
W2
O
Y1
W2
W1
O
Y/Y2
G
R
C
Y1
W2
W1
O
Y/Y2
G
R
C
W2
W2
W2
NOTE:
Jumper W1 & W2
together if not using W2
on thermostat
Summary of Contents for MB7EM 3-PHASE Series
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