
12
Figure 6. Typical Air Conditioner & Heat Pump System Connections
G
R
W
2
C
EO
Y
Thermostat
G
R
W
Thermostat
Y
C
Y
GR
W
Thermostat
Y
C
Air
Handler
Air
Conditioner
Y
T
ypical Air Conditioner with
Standar
d Air Handler
GR
C
E
O
Y
Thermostat
T
ypical
Heat Pump w/Standar
d
Air Handler
T
ypical Air Conditioner with
V
ariab
le Speed Air Handler
T
ypical Heat Pump with Optional Outdoor
Thermostat and
V
ariab
le Speed Air Handler
NO
TE:
J
umper W1
&W2 together f
or
shor
ter staging time
.
W2
W1
O
Y/Y2
G
R
C
W2
W1
O
Y/Y2
G
R
C
W2
W1
O
Y/Y2
G
R
C
W2
W1
O
Y/Y2
G
R
C
G
R
W2
C
EO
Y1
Thermostat
OD
Stat
O
Y1
R
C
GR
W
Thermostat
Y1
C
Y1
W2
E
T
ypical 2-Sta
g
e
Air Conditioner
with
V
ariab
le Speed Air Handler
T
ypical 2-Sta
g
e
Cooling Heat Pump with
Optional Outdoor
Thermostat &V
ariab
le
Speed Air Handler
W2
W1
O
Y/Y2
G
R
C
W2
W1
O
Y/Y2
G
R
C
Y2
Y2
Y2
Y2
W1
W3
R
Y1
Y1
Y1
Y1
Y1
Y1
Air
Conditioner
Air
Handler
NO
TE:
J
umper W1
&W2 together f
or
shor
ter staging time
.
NO
TE:
J
umper W1
&W2 together f
or
shor
ter staging time
.
NO
TE:
F
or A
C
applications
, the O &
Y
connection m
ust be connected as sho
wn.
Air
Conditioner
Air
Handler
NO
TE:
F
or A
C
applications
, the O &
Y
connection m
ust be connected as sho
wn.
Heat Pump
Air
Handler
NO
TE:
J
umper W1
&W2 together f
or
shor
ter staging time
.
NO
TE:
J
umper W1
&W2 together f
or
shor
ter staging time
.
NO
TE:
J
umper W1
&W2 together f
or
shor
ter staging time
.
Heat Pump
OD
Stat
E
O
W2
R
C
Y
Air
Handler
Air
Handler
W
2
O
W2
R
C
Y
Heat Pump
NO
TE:
J
umper betw
een
W2 & E is required when
no OD
T
-Stat is used.
* On single stage systems connect to
Y/Y2 to obtain selected cooling speed