Check Thermostat Operation After
Programming And Installing
M 879
B.
PRESS LOWER EDGE
OF CASE TO LATCH.
C.
SWING COVER OPEN TO
CHECK OPERATION.
A.
ENGAGE TABS AT TOP OF
THERMOSTAT AND MOUNTING PLATE.
24
25
Heat
Cool
Off
Auto
On
Mount The Thermostat
HEATING
Do NOT check heating system
operation by jumpering thermostat
terminals at the primary control, such
as the gas valve, zone valve, oil
burner control. This will damage the
thermostat.
INSTALLATION
STEP 9
STEP 10
Move the system switch to HEAT and
the fan switch to AUTO.
Press key until the setting is about
6
°
C [10
°
F] above room temperature.
Heating should start and the fan
should run after a short delay (immedi-
ately if fan operation switch is set in E
position).
Press key until setting is about
6
°
C [10
°
F] below room temperature.
The heating equipment should shut
off.
Warmer
Cooler
NOTE: To remove thermostat from wall, first pull out at
bottom of thermostat, removing top last.
