Installation - Honeywell Q682B Manual

WHEN INSTALLING THIS PRODUCT...
1. Read these instructions carefully. Failure to follow
them could cause a hazardous condition.
2. Check the ratings given in the instructions and on
the product to make sure the product is suitable for your
application.
3. Installer must be a trained experienced service
technician.
4. After installation is complete, check out product op-
eration as provided in these instructions.
IMPORTANT: An incorrectly leveled subbase will cause
the temperature control to deviate from setpoint. It is
not a calibration problem.
CAUTION
1. Disconnect power supply to prevent electrical
shock or equipment damage.
2. To prevent interference with the thermostat
linkage, keep wire length to a minimum and run
wires as close as possible to the subbase.
3. Do not overtighten thermostat captive mount-
ing screws because damage to subbase threads
can result.
4. Do not short across coil terminals on relay. This
can burn out the thermostat heat anticipator.
LOCATION
Locate thermostat about 5 ft [1.5m] above the floor in an
area with good air circulation at average temperature.
Do not mount the thermostat where it may be affected by:
— drafts, or dead spots behind doors and in corners.
— hot or cold air from ducts.
— radiant heat from the sun or appliances.
— concealed pipes and chimneys.
— unheated (uncooled) areas behind the thermostat.
Run wires from the heating, cooling or heating-cooling
equipment to the thermostat location.
The number of wires required to connect this thermostat
to the heating, cooling or heating-cooling equipment de-
pends on how the thermostat is powered—by the 24 Vac or
battery, or through the control system. Refer to the Typical
Wiring Diagrams section to determine the number of wires
required for your application.
UNPACK THERMOSTAT
Handle your new thermostat carefully; rough handling
may interfere with its accuracy. Before unpacking, refer to
Fig. 1.
Remove and discard the shipping wrap.
IMPORTANT: Save package of screws and instructions
for homeowner.
Remove thermostat cover by lifting from the bottom. Set
aside cover until needed later.
Carefully remove material protecting mercury switch
bulb.
Loosen two captive mounting screws and separate
wallplate (if provided) from back of thermostat base.
69-0431—2

Installation

2
Fig. 1—Unpack thermostat.
THERMOSTAT
BASE
MOUNT WALLPLATE OR SUBBASE
Wall Mounting (Fig. 2)
Hold wallplate or subbase in position on wall as shown in
Fig. 2.
Mark holes on the wall for anchors. Use spirit level to
make sure the wallplate or subbase is level.
Drill 3/16 in. holes and gently tap anchors into holes until
flush with the wall.
Pull wires through large wiring hole in wallplate or
subbase.
Loosely fasten the wallplate or subbase to the wall with
the three screws. Do not tighten screws completely. Care-
fully level the wallplate or subbase (Fig. 3) and firmly tighten
the screws.
Fig. 2—Mounting wallplate or subbase to wall.
3 SCREW HOLES
WITH PLASTIC
ANCHORS
R
G
FAN
ON AUTO
HEATING/COOLING SUBBASE
3 SCREW HOLES
WITH PLASTIC
ANCHORS
HEATING-ONLY
WALLPLATE
THERMOSTAT
COVER
LIFT
COVER
CAPTIVE
MOUNTING
SCREWS
M1518
O
B
W
Y
COOL
HEAT OFF
M1552A
M857