69-2715EF—07
18
Setting functions and options
You can change options for a number of system functions. Available functions depend on
the type of system you have. The functions, along with available options are described on
pages 18–19.
This thermostat is pre-set for a single-stage heating/cooling system.
Setting function 1 for a heat pump will adjust the default settings.
1 Press
Fan
and
s
simultaneously and hold
for approximately 3 seconds. The screen will
change to display two numbers and the button
designations will be
Done
,
Back
, blank,
Next
.
2 Press
Next
until you see the function number—
the larger number on the left—you want to set.
3 Change options for any function by pressing
s
or
t
until the correct option (smaller number on
right) is displayed.
4 Repeat Steps 2 and 3 until you have set all
functions that you wish to change.
5 When you have made all changes, press
Done
to save and exit.
HOLD
MCR33883
MCR33884
HOLD
System setup
Function
Settings & Options
1
Select System
Type
If you are not sure
of your heating/
cooling system
type or have other
questions, go to
wifithermostat.com
0
Heat/cool:
Gas, oil or electric heating with central air conditioning.
1
Heat pump:
Heat pump without backup or auxiliary heat.
2
Heat only:
Gas, oil or hot water heat without central air conditioning.
3
Heat only with fan:
Gas, oil or electric heat without central air
conditioning.
4
Cool only:
Central air conditioning only.
5
Heat pump:
Heat pump with backup or auxiliary heating.
6
Heat/Cool Multiple stages:
2 heat stages (wires on
W
and
W2
), 2
cooling stages (wires on
Y
and
Y2
).
7
Heat/Cool Multiple stages:
2 heat stages (wires on
W
and
W2
), 1
cooling stage (wire on
Y
).
8
Heat/Cool Multiple stages:
1 heat stage (wires on
W
), 2 cooling stages
(wire on
Y
and
Y2
).
2
Heat Pump
Changeover Valve
(for heat pumps
only)
0
Cooling changeover valve:
Use this setting if you connected a wire
labeled “O” to the O/B terminal.
1
Heating changeover valve:
Use this setting if you connected a wire
labeled “B” to the O/B terminal.
3
Heating 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).
5
Heating Cycle
Rate
5
Gas or oil furnace:
Standard gas/oil furnace (less than 90% efficiency).
9
Electric furnace:
Electric heating systems.
3
Hot water or high-efficiency furnace:
Hot water system or gas furnace
(more than 90% efficiency).
1
Gas/oil steam or gravity system:
Steam or gravity heat systems.
6
Heating Cycle
Rate Stage 2
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