Installation Guide
Installer setup
Follow the procedure below to configure the thermostat to match the installed heat-
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)
69-2695EFS— 01
Function
number
and FAN
Settings & options (factory default in bold)
TH6320U/TH6220D
0
1 heat/1 cool conventional
1
1 heat/1 cool heat pump (no aux. heat)
mally 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) -
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
5
For gas or oil furnaces of less than 90% efficiency
1
For steam or gravity systems
9
For electric furnaces
5
For gas or oil furnaces of less than 90% efficiency
1
For steam or gravity systems
9
For electric furnaces
5
For gas or oil furnaces of less than 90% efficiency
1
For steam or gravity systems
9
For electric furnaces
3
Recommended for most compressors
6
1
Done
Press
or
to change settings.
Press NEXT to advance to the next function.
or as otherwise noted.
TH6320U
TH6320U
furnaces of over 90% efficiency
furnaces of over 90% efficiency
furnaces of over 90% efficiency
Setting
0
Next
MCR29454
-
only
only
Continued on next page