RTH8500
17 69-2219EF—03
About your new thermostat
SETUP WIRING ASSISTANCE TROUBLESHOOTING
See page 14 to navigate between functions.
Function Settings & Options
0180 Heating Fan
Control
Press s/t to select your heating
system & fan control:
0 Gas or oil heat: Use this
setting if you have a gas or
oil heating system (system
controls fan operation).
1 Electric heat: Use this setting
if you have an electric heating
system (thermostat controls fan
operation).
0190 Heat Pump
Changeover
Valve (for heat
pumps only)
Press s/t to select whether your
changeover valve is used in heating
or cooling:
0 Cooling changeover valve:
Use this setting if you con-
nected a wire labeled “O” to
the O/B terminal (see page 22).
1 Heating changeover valve:
Use this setting if you con-
nected a wire labeled “B” to the
O/B terminal (see page 23).
System setup
To Next Page
Loading...
