Bard CompleteStat CS9B-THOA - Sequence of Operation; Table 2 Conventional 1 H;1 C, 2 H;1 C, 1 H;2 C or 2 H;2 C Without Econ; Table 3 Conventional 1 H;1 C, 2 H;1 C, 1 H;2 C or 2 H;2 C with Econ

Manual 2100-684
Page 12 of 25
SEQUENCE OF OPERATION
Operation G Y/O Y1 Y2 W1/E W2 O/B D A
Fan Only X
1
st
Stage Cooling X X
2
nd
Stage Cooling (if employed) X X X
1
st
Stage Heating X X
2
nd
Stage Heating (if employed) X X X
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.
Operation G Y/O Y1 Y2 W1/E W2 O/B D A
Fan Only X
1
st
Stage Cooling (Economizer) X X
2
nd
Stage Cooling X X X
3
rd
Stage Cooling (if employed) X X X X
1
st
Stage Heating X X
2
nd
Stage Heating (if employed) X X X
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.
TABLE 2
Conventional 1H/1C, 2H/1C, 1H/2C or 2H/2C without Economizer
TABLE 3
Conventional 1H/1C, 2H/1C, 1H/2C or 2H/2C with Economizer