T874 MULTISTAGE THERMOSTATS AND Q674 SUBBASES
7 60-2485—8
MERCURY NOTICE
This control contains mercur
in a sealed tube. Do
not
place control in the trash at the end of its useful life.
If this control is replacin
a control that contains
mercur
in a sealed tube, do
not
place
our old control
in the trash.
Contact
our local waste mana
ement authorit
for
instructions re
ardin
rec
clin
and the proper
disposal of this control, or of an old control containin
mercur
in a sealed tube. If
ou have
uestions, call
the Hone
well Customer Response Center at
1-800-468-1502.
INSTALLATION
When Installing this Product…
1.
Read these instructions carefull
. Failure to follow them
could dama
e the product or cause a hazardous condi-
tion.
2.
Check the ratin
s
iven on the product to make sure the
product is suitable for
our application.
3.
Installer must be a trained, experienced service techni-
cian.
4.
After installation is complete, check out product opera-
tion as provided in these instructions.
CAUTION
Hazardous Voltage.
Can damage heating/cooling system.
1. Disconnect power suppl
before be
innin
instal-
lation to prevent electrical shock or e
uipment
dama
e.
2. Do
not
short across coil terminals on rela
. This
can burn out thermostat heat anticipator.
3. To prevent interference with the thermostat link-
a
e, keep wire len
th to a minimum and run wires
as close as possible to the subbase.
4. Do
not
overti
hten thermostat captive mountin
screws because dama
e to subbase threads can
result.
IMPORTANT
An incorrectly leveled thermostat will cause the tem-
perature control to deviate from setpoint. It is not a
calibration problem.
Location
Install the thermostat about 5 ft
1.5m
above the floor in an
area with
ood air circulation at avera
e temperature.
Do not mount the thermostat where it can be affected b
:
— drafts or dead spots behind doors, in corners or under
cabinets.
— hot or cold air from ducts.
— radiant heat from the sun, fireplace, or appliances.
— concealed pipes and chimne
s.
— unheated
uncooled
areas such as an outside wall behind
the thermostat.
Mount Subbase
The subbase can be mounted on a vertical outlet box,
horizontal outlet box or directl
on the wall.
1.
If the subbase is mounted on a vertical outlet box, order
Hone
well part no. 193121A Adapter Assembl
. See
Fi
. 4. The assembl
includes an adapter rin
, two
screws and a cover plate to cover marks on the wall.
Install the rin
and cover plate on the vertical outlet box.
NOTE: For a wall installation, hold subbase in position and
mark holes for anchors. See Fi
. 5. Wall anchors
must be obtained from local hardware store. Be
careful that the wires do not fall back into the wall
openin
. Set aside subbase. Drill four
3/16 in.
4.8 mm
holes and
entl
tap anchors into
the holes until flush with the wall.
2.
Pull wires throu
h the cover plate
if used
and subbase
cable openin
. See Fi
. 6.
3.
Secure the cover plate
if used
and subbase with the
screws provided. Do not full
ti
hten the subbase
screws.
Level the subbase usin
a spirit level, see Fi
. 7, and firml
ti
hten subbase mountin
screws. The subbase mountin
holes provide for minor out-of-level ad
ustments.
Fig. 4. Installing Q674 Subbase on outlet box.
M6009
VERTICAL
OUTLET
BOX
ADAPTER
RING
COVER
PLATE
MOUNTING
SCREWS (2)
1
SUBBASE
SUBBASE
MOUNTING SCREWS (2)
HORIZONTAL
OUTLET
BOX
1
2
2
1 NOT INCLUDED WITH UNIT.
2 ACCESSORY PART AVAILABLE (193121A).
THERMOSTAT
CAPTIVE
MOUNTING SCREWS (2)
5
0
6
0
7
0
8
0
5
0
6
0
7
0
8
0
H
E
A
T
C
O
O
L
THERMOSTAT
COVER
5
0
6
0
7
0
8
0
