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Installation Guide
Installer setup
Follow the procedure below to configure the thermostat to match the installed heat-
ing/cooling system, and customize feature operation as desired.
To begin, press and hold the
buttons until the display changes.
Setup function
Shaded areas below apply only to
1
System type
2
Changeover valve
(O/B terminal)
3
Fan control
(heating)
5
Stage 1 heat cycle
rate (CPH: cycles/
hour)*
6
Stage 2 heat cycle
rate/Auxiliary heat
cycle rate (CPH)*
7
Auxiliary heat cycle
rate (CPH)*
Only
TH6320U
for 3H/2C Heat Pumps
9
Stage 1 compressor
cycle rate (CPH)
*[Other cycle rate options: 2, 4, 6, 7, 8, 10, 11 or 12 CPH]
69-2695EFS—01
and FAN
s
Settings & options (factory default in bold)
TH6320U/TH6220D
0
1 heat/1 cool conventional
1
1 heat/1 cool heat pump (no aux. heat)
2
Heat only — 2-wire systems, 3-wire zone valves (Series 20), and nor-
mally open zone valves
3
Heat only with fan
4
Cool only
5
2 heat/1 cool heat pump (with aux. heat)
6
2 heat/2 cool conventional
7
2 heat/1 cool conventional
8
1 heat/2 cool conventional
9
2 heat/2 cool heat pump (no aux. heat) -
10
3 heat/2 cool heat pump (with aux. heat) - TH6320U
0
Changeover valve (O/B terminal energized in cooling)
1
Changeover valve (O/B terminal energized in heating)
0
Gas or oil furnace — equipment controls fan in heating
1
Electric furnace — thermostat controls fan in heating
5
For gas or oil furnaces of less than 90% efficiency
1
For steam or gravity systems
3
For hot water systems & furnaces of over 90% efficiency
9
For electric furnaces
5
For gas or oil furnaces of less than 90% efficiency
1
For steam or gravity systems
3
For hot water systems & furnaces of over 90% efficiency
9
For electric furnaces
5
For gas or oil furnaces of less than 90% efficiency
1
For steam or gravity systems
3
For hot water systems & furnaces of over 90% efficiency
9
For electric furnaces
3
Recommended for most compressors
[Other cycle rate options: 1, 2, 4, 5 or 6 CPH]
6
Function
number
1
Done
Press
s
or
t
to change settings.
Press NEXT to advance to the next function.
Press DONE to exit and save settings.
or as otherwise noted.
Setting
0
Next
MCR29454
TH6320U
only
only
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