INSTALLATION
REMOVE OLD THERMOSTAT
complete. Ensure that electrical power is disconnected.
2. Remove the front cover of the old thermostat. With wires
still attached, remove wall plate from the wall. If the
old thermostat has a wall mounting plate, remove the
thermostat and the wall mounting plate as an assembly.
Identify each wire attached to the old thermostat using
the labels enclosed with the new thermostat.
4. Disconnect the wires from old thermostat one at a time. DO
NOT LET WIRES FALL BACK INTO THE WALL.
ATTENTION!
may replace a unit which contains mercury.
Do not open mercury cells. If a cell becomes damaged, do
take up the spilled mercury and place into a container which
can be sealed. If a cell becomes damaged, the unit should be
discarded.
unit this product is replacing is to be discarded, place in a
to send the product containing mercury.
ATTACH THERMOSTAT BASE TO WALL
pull the cover straight off the base. Forcing or prying on the
thermostat will cause damage to the unit.
existing mounting holes, or if holes drilled are too large and
do not allow you to tighten base snugly, use plastic screw
anchors to secure subbase.
from affecting thermostat operation.
O/B TERMINAL SWITCH SELECTION
applications, which require the changeover relay to be
Mounting
Hole
O/B
Switch
Figure 1. Thermostat Base
GAS / ELEC SWITCH
the system configuration selected in the configuration menu.
BATTERY LOCATION
the battery door and remove the battery tag. To open, pull
the battery door as shown by the arrow and lift open. The two
continuously display the temperature during a loss of AC power.
To replace batteries, pull the battery door shown by the arrow
and lift open. Using the polarity indicated inside the battery
door, insert the batteries. To close the battery door, swing the
door down while pulling in the direction of arrow. Once fully
down, snap the door back into position.
Thermostat can be powered by system AC power or Battery. If
is displayed, the thermostat is battery powered. If
displayed, thermostat is system powered with optional battery
the
use new premium brand alkaline batteries such as Duracell
®
If the home is going to be unoccupied for an extended period
reset with
or
days if batteries are not replaced. To replace the batteries, set
system to OFF.
2
Battery
Door
Gas/Elec
Opening
Switch
for wires
"AA" Alkaline Batteries
"Change
is displayed, the batteries should be
. Another offset will occur within two
Mounting
Hole
is not
®
or