5
1
0
Done Next
MCR29454
Follow the procedure below to configure
the thermostat to match the installed
heating/cooling system, and customize
feature operation as desired.
1. To begin, press and hold the
s
and FAN buttons until the display
changes.
2. Press
s or t to change settings.
3. Press NEXT to advance to next
function.
4. Press DONE to exit and save
settings.
Installer setup
Setup function Settings & options (factory default in bold)
Shaded areas below apply only to TH6320U/TH6220D or as otherwise noted.
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
Function
number
Setting
*[Other cycle rate options: 2, 4, 6, 7, 8, 10, 11 or 12 CPH]
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