Honeywell T834C Quick Start Manual page 4

T834C, T8034C HEATING/COOLING THERMOSTATS
T834C
The T834C can be mounted directly on a wall or vertical outlet
box:
— Use the 193121A Mounting Plate Assembly (ordered
separately) to mount thermostat on horizontal outlet box or
to cover marks from an old thermostat.
— If mounting plate assembly is used, review instructions
provided with assembly before wiring and mounting
thermostat.
1. In replacement applications, check existing thermostat
wires for cracked or frayed insulation. Replace any
wires in poor condition.
NOTE: If wire is plastered into the wall, make a hole next to
the wires and loosen them so they can be pushed
back into the wall later.
2. In new installations, run wiring, if necessary, to the
thermostat location.
3. Connect the wires to the terminals on back of thermo-
stat. See Fig. 5-9 for internal schematics and typical
hookup diagrams.For systems requiring thermostat con-
trol of fan operation in heat (some electric heat applica-
tions), jumper terminals 1 and 2. See Fig. 3.
4. Remove thermostat cover by pulling outward from
indentation on right or left side of cover until it snaps
free of thermostat base. Carefully remove and discard
foam plastic shipping insert protecting switch and
bimetal assembly during shipping.
5. Set the adjustable heat anticipator indicator to match
the current draw of the primary heating control (see
Heat Anticipator Setting).
6. Push excess wire back through the hole and plug any
opening with insulation to prevent drafts that can affect
thermostat performance.
7. Loosely fasten the thermostat and mounting plate, if
used, to the wall or outlet box with a screw through the
top mounting hole. Adjust thermostat so it is approxi-
mately level and start the second screw through the
bottom mounting hole. Do not tighten.
8. Level the thermostat exactly using a level device.
Tighten the mounting screws.
IMPORTANT
This thermostat is calibrated at the factory, mounted
at true level. Any inaccuracy in leveling during the
mounting causes control point deviation.
9. Replace thermostat cover.
68-0075-2
R
1
1 IN ELECTRIC HEAT AND HEAT PUMP APPLICATIONS, JUMPER
TERMINALS 1 AND 2 FOR AUTOMATIC FAN CONTROL IN HEATING
AND COOLING.
2 IN GAS-AND OIL-FIRED APPLICATIONS, JUMPER TERMINALS 1
AND Y FOR AUTOMATIC FAN CONTROL IN COOLING.
Fig. 3. Jumpering terminals 1 and 2 to control fan
operation from thermostat during heating
(electric heat application).
T8034C
The T834C can be mounted directly on a wall or horizontal
outlet box:
— Use the 200581 Horizontal Wallplate to cover mounting
marks from an old thermostat or use 193121A Mounting
Plate Assembly to mount thermostat on vertical outlet box
or to cover marks from an old thermostat where a larger
plate is needed. (The SUPERTRADELINE T8034C
includes the 200581 Horizontal Wallplate. For other
T8034C models, horizontal wallplate or mounting plate
assembly must be ordered separately.)
— Using 200581 Horizontal Wallplate: Align thermostat
and wallplate (see Fig. 4) and press firmly together
until wallplate snaps in place; then wire and mount the
thermostat.
— Using 193121A Mounting Plate Assembly: Review
instructions provided with assembly before wiring and
mounting thermostat.
Fig. 4. Mounting SUPERTRADELINE T8034C on wallplate.
4
2
G
JUMPER
Y 1
W
M20951
2
M8675