Installation Guide
6
To begin, press and hold the
s
and FAN
buttons until the display changes.
Function
number
Setting
Press
s
or
t
to change settings.
Press NEXT to advance to the next function.
Press DONE to exit and save settings.
1
0
Done
Next
Installer setup
Follow the procedure below to configure the thermostat to match the installed
heating/cooling system, and customize feature operation as desired.
Continued on next page
Setup function
Settings & options (factory default in bold)
Shaded areas below apply only to
TH6320U/TH6220D
or as otherwise noted.
*[Other cycle rate options: 2, 4, 6, 7, 8, 10, 11 or 12 CPH]
1
System type
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
normally 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) -
TH6320U
only
10 3 heat/2 cool heat pump (with aux. heat) -
TH6320U
only
2
Changeover valve
(O/B terminal)
0
Changeover valve (O/B terminal energized in cooling)
1
Changeover valve (O/B terminal energized in heating)
3
Fan control
(heating)
0
Gas or oil furnace — equipment controls fan in heating
1
Electric furnace — thermostat controls fan in heating
5
Stage 1 heat cycle
rate (CPH: cycles/hour)*
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
6
Stage 2 heat cycle
rate/Auxiliary heat
cycle rate (CPH)*
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
7
Auxiliary heat cycle
rate (CPH)*
Only
TH6320U
for 3H/2C Heat Pumps
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
8
Emergency heat cycle
rate (CPH)*
9
For electric emergency heat
1
For steam or gravity systems
3
For hot water systems & furnaces of over 90% efficiency
5
For gas or oil furnaces of less than 90% efficiency
