TH8320U AND TH8321U TOUCH SCREEN PROGRAMMABLE THERMOSTATS
69-1706
12
Cycles per
hour (cph) for
1st Stage
Conventional
Heat
0240
5
Conventional Heat
Stage 1 cycles per
hour (cph)
1-12
1-12 available; typical
settings:
1
—1 cph used for steam
or gravity system.
3
—3 cph used for hot
water systems or high
efficiency (90% or better)
fossil fuel forced air
systems.
5
—5 cph used for
standard fossil fuel forced
air systems.
9
—9 cph used for electric
forced air heat systems.
Not shown if
system
selection is
heat pump.
Selection in
this stage
changes
default cph
for 2nd stage
heat.
Cycles per
hour (cph) for
2nd Stage
Heat
0250
5
Cycles per hour (cph)
for 2nd Stage
Conventional Heat or
Auxiliary Heat for
2 H/1C Heat Pump
Systems
1-12
1-12 available; typical
settings:
1
—1 cph used for steam
or gravity system.
3
—3 cph for hot water
systems or high efficiency
(90% or better) fossil fuel
forced air systems.
5
—5 cph for standard
fossil fuel forced air
systems.
9
—9 cph used for electric
forced air heat systems
(electric auxiliary heat for
heat pump systems).
Only shown if
two stages of
heat are
selected.
Table 4. Main Installer Setup Menu. (Continued)
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Installer
Setup
Number
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