System setup
About your new thermostat
See page 14 to navigate between functions.
Function
0180
Heating Fan
Control
0190
Heat Pump
Changeover
Valve (for heat
pumps only)
NOTE: Some functions in the following pages
may not appear due to previous selections
made.
RTH7400/RTH7500 Series
Settings & Options
Press
to select your heating
s/t
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).
Press NEXT
Press
to select whether your
s/t
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).
Press NEXT
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