Honeywell Y8185 - Manual (Page 2)

Locate thermostat about 5 ft. [1.5 m] above the floor in
an area with good air circulation at average temper­
ature. 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 (uncooied) areas behind the thermostat,
such as an outside wall.
2 LOCATE NEW THERMOSTAT----------------
□
Run wires from heafing or heating/cooling equip­
ment to new thermostat location.
IMPORTANT-
This control requires an additional conductor to
the control transformer common; i.e., typical
2-wire heating system requires 3 wires be pulfed,
4-wire heating/cooling requires 5 wires.
3 UNPACK THERMOSTAT
NOTE: Illustrations show thermostat models that have
conventional recovery from heating setback (except
when noted}.
□
may
to Fi
□
Handle new thermostat carefully; rough handling
may interfere with its accuracy. Before unpacking, refer
to Fig. 1.
Remove and discard shipping wrap. IMPORTANT;
Save package of screws, instructions, and spare pro­
gram pins and ramp recovery segments (T8185R only)
for homeowner.
□ Remove thermostat cover by lifting from bottom.
Set aside cover until called for iater.
□ Carefully remove material protecting mercury
switch bulb (a).
□ Loosen 2 captive mounting screws and separate
wallplate (if provided} from back of thermostat base.
LIFT COVER
Fig. 1—Unpack thermostat.
4 MOUNT WALLPLATE OR SUBBASE-
rH Hold wallplate or subbase in position on wall as
shown in Fig. 2.
EH Mark holes for anchors on the wall. Use spirit level
to make sure the wallplate or subbase will be level.
□ Drill 3/16 in. holes and gently tap anchors into
holes until flush with the wall.
EH
Pull wires through large wiring hole in subbase.
EH
Loosely fasten the wallplate or subbase to the wall
with the 3 screws.
EH
Carefully level the wallplate or subbase (Fig. 3)
and firmly tighten screws.
EH
For mounting on horizontai or vertical outlet box,
see instructions packed with optional Cover Plate
Assembly, Part No. 193121A.
Fig. 2—Mounting wallplate or subbase to wall.
2