press and hold the and FAN
buttons until the display changes.
Function
number
Setting
Press or to change settings.
Press NEXT to advance to the next function.
Press DONE to exit and save settings.
Installer setup
Follow the procedure below to configure the thermostat to match the installed
Setup function Settings & options (factory default in bold)
Shaded areas below apply only to TH5320U/TH5220D or as otherwise noted.
1 System type 0 1 heat/1 cool conventional
1 1 heat/1 cool heat pump (no aux. heat)
normally open zone valves
4 Cool only
5 2 heat/1 cool heat pump (with aux. heat)
6 2 heat/2 cool conventional
8 1 heat/2 cool conventional
9 2 heat/2 cool heat pump (no aux. heat) - TH5320U only
TH5320U 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
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
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
furnaces of over 90% efficiency
9 For electric furnaces
7 Auxiliary heat cycle
rate (CPH)*
Only TH5320U
for 3H/2C Heat Pumps
5 For gas or oil furnaces of less than 90% efficiency
1 For steam or gravity 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
furnaces of over 90% efficiency
5 For gas or oil furnaces of less than 90% efficiency
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