PRO TH3110B Non-programmable Digital Thermostat
7
Installation Guide
6
•
G
Ga
ass o
orr O
Oiill:: For gas or oil heating
systems, leave the fan operation
switch in this factory-set position
(This setting is for systems that
control the fan in a call for heat.)
•
E
Elle
ec
cttrriic
c o
orr H
He
ea
att P
Pu
um
mp
p:: Change the
switch to this setting for heat
pump or electric heat systems.
(This setting is for systems that
allow the thermostat to control the
fan in a call for heat, if a fan wire is
connected to the G
G
terminal.)
Set fan operation switch
Fan operation settings
Install batteries in back of thermostat
Install two AA alkaline batteries in the
back of the thermostat, as shown at
left.
Fresh batteries should be installed
immediately when the
R
RE
EP
PLLA
AC
CE
E B
BA
AT
TT
T
warn-
ing begins flashing (see page 10.) The
warning flashes about two months
before batteries are depleted.
Even if the warning does not appear,
Batteries should be replaced once a year,
or before the home is left vacant for
more than a month.
Battery installation
Align the 4 tabs on the wallplate with
corresponding slots on the back of the
thermostat, then push gently until the
thermostat snaps
in place.
Thermostat mounting
