Manual 2100-684
Page
14 of 25
Operation
G
Y/O
Y1
Y2
W1/E
W2
O/B
D
A
Fan Only
X
1
st
Stage Cooling
X
X
X
2
nd
Stage Cooling
X
X
X
1
st
Stage Heating
X
X
X
X
2
2
nd
Stage Heating
X
X
X
X
3
X
2
Emergency Heat
X
X
X
3
Dehumidification
X
Ventilation
1
X
1
X
1
CS9B(E)-THOCA
(CO
2
Sensing Capability) models will activate both
G
and
A
terminals upon a ventilation call;
however, the
CS9B(E)-THOA
(Non-CO
2
Sensing) models will activate the
A
terminal only if there is an existing call
for the indoor blower, whether through space conditioning or through constant fan operation.
2
CompleteStat controller can be configured to energize reversing valve in cooling (see
System Selection
on page 5).
3
Electric heat must be configured for a heat pump application (see
Auxiliary Electric Heat Setup
on page 7).
Operation
G
Y/O
Y1
Y2
W1/E
W2
O/B
D
A
Fan Only
X
1
st
Stage Cooling
X
X
X
2
nd
Stage Cooling
X
X
X
3
rd
Stage Cooling
X
X
X
X
1
st
Stage Heating
X
X
X
X
2
2
nd
Stage Heating
X
X
X
X
X
2
3
rd
Stage Heating
X
X
X
X
X
3
X
2
Emergency Heat
X
X
X
3
Dehumidification
X
Ventilation
1
X
1
X
1
CS9B(E)-THOCA
(CO
2
Sensing Capability) models will activate both
G
and
A
terminals upon a ventilation call;
however, the
CS9B(E)-THOA
(Non-CO
2
Sensing) models will activate the
A
terminal only if there is an existing call
for the indoor blower, whether through space conditioning or through constant fan operation.
2
CompleteStat controller can be configured to energize reversing valve in cooling (see
System Selection
on page 5).
3
Electric heat must be configured for a heat pump application (see
Auxiliary Electric Heat Setup
on page 7).
SEQUENCE OF OPERATION (CONT.)
TABLE 6
Single Stage Heat Pump with Economizer
TABLE 7
Two Stage Heat Pump with Economizer
