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INSTALLATION
REMOVE OLD THERMOSTAT
1. Shut off electricity at the main fuse box until installation is
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.
3. 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.
5. Install new thermostat using the following procedures.
ATTENTION!
This product does not contain mercury. However, this product
may replace a unit which contains mercury.
Do not open mercury cells. If a cell becomes damaged, do
not touch any spilled mercury. Wearing nonabsorbent gloves,
take up the spilled mercury and place into a container which
can be sealed. If a cell becomes damaged, the unit should be
discarded.
Mercury must not be discarded in household trash. When the
unit this product is replacing is to be discarded, place in a
suitable container. Refer to www.white-rodgers.com for location
to send the product containing mercury.
ATTACH THERMOSTAT BASE TO WALL
1. Remove the packing material from the thermostat. Gently
pull the cover straight off the base. Forcing or prying on the
thermostat will cause damage to the unit.
2. Place base over hole in wall and mark mounting hole
locations on wall using base as a template (see Fig.1).
3. Move base out of the way. Drill mounting holes.
4. Push wires through opening in thermostat base.
5. Fasten base loosely to wall using two mounting screws.
Place a level against bottom of base, adjust until level,
and then tighten screws. (Leveling is for appearance only
and will not affect thermostat operation.) If you are using
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.
6. Connect wires to terminals on base using appropriate
wiring schematic (see figs. 2 through 4).
7. Push excess wire into wall and plug hole with a fire-resistant
material (such as fiberglass insulation) to prevent drafts
from affecting thermostat operation.
O/B TERMINAL SWITCH SELECTION
The O/B switch on this thermostat is factory set to the "O"
position. This will accommodate the majority of heat pump
applications, which require the changeover relay to be
energized in COOL. If the thermostat you are replacing or the
heat pump being installed with this thermostat requires a "B"
terminal, to energize the changeover relay in HEAT, the O/B
switch must be moved to the "B" position.
Mounting
Hole
FAN
(Ele/Gas)
Switch
Figure 1. Thermostat Base
FAN (ELE/GAS) SWITCH
For Electric Heat, heat pump or any system that requires the
thermostat to turn on the blower on a call for heat– place the
FAN (Ele/Gas) switch (Fig. 1) in the ON position. For Auxiliary
and Emergency Heat systems that have a fan control to turn
on the blower (independent of the thermostat) place switch in
the OFF position.
BATTERY LOCATION
Two "AA" alkaline batteries are installed in your thermostat
with a battery tag to prevent power drainage. Prior to use,
open the battery door and remove the battery tag. To open,
pull the battery door as shown by the arrow and lift open. The
two "AA" batteries will operate all functions or maintain time
and continuously display the temperature during a loss of AC
power. Installed batteries will also allow programming prior to
installation. 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
back-up. When battery power remaining is approximately half,
will be displayed. When "Change
the
install fresh "AA" alkaline batteries immediately. For best
results, use new premium brand alkaline batteries such as
Duracell® or Energizer®. We recommend replacing batteries
every 2 years. If the home is going to be unoccupied for an
extended period (over 3 months) and
batteries should be replaced before leaving. When less than
two months of battery life remain, the setpoint temperature will
offset by 10 degrees (10 degrees cooler in Heat mode / 10
degrees warmer in Cool mode). If offset occurs, the normal
setpoint can be manually reset with
will occur within two days if batteries are not replaced. To
replace the batteries, set system to OFF.
2
Battery
Door
Opening
O/B
for wires
Switch
"AA" Alkaline Batteries
" is displayed,
is displayed, the
or
. Another offset
Mounting
Hole
is not
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