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T834B; T834C; T834J HEATING-COOLING THERMOSTATS
Wiring and Mounting
Disconnect power supply before beginning installation to
prevent electrical shock or equipment dam age.
All wiring must comply with local codes and ordinances.
The T834 may be m ounted directly on a wall or vertical
outlet box. U se Honeywell part no. 193121A M ounting
Plate Assembly (ordered separately) to mount on horizon
tal outlet box or cover marks left by old therm ostat. If
mounting plate assembly is used, review instructions
provided with assembly before wiring and mounting
therm ostat.
To wire and mount therm ostat:
In replacement applications, check the existing
1.
thermostat wires for cracked or frayed insulation.
Replace any wires in poor condition. If the wire is
plastered into the wall, m ake a hole next to the
wires and loosen the wires so they can be
pushed back into the wall later.
In new installations, run wiring (if necessary) to the
2.
thermostat location.
Connect the wires to the terminals on the back of
3.
the therm ostat. See Fig. 3 through 12 for
internal schematic and typical hookup diagram s.
If control of fan operation from the thermostat is
required in a central electric heat application,
jumper terminals 1 and 2. See Fig. 1 .
Remove thermostat cover by pulling outward on
4.
bottom edge of the cover until it snaps free of the
thermostat base. See Fig. 2. Carefully rem ove
and discard the foam plastic shipping insert that
protects the switch and bim etal assembly during
shipping.
Set the adjustable heat anticipator indicator to
5.
m atch the current draw of the primary heating
control (see Heat Anticipator Setting section).
H1
FALL
H1
ANTICIPATOR *
A
POWER SUPPLY. PROVID E D ISCONNECT MEANS A N D O VERLOAD PROTECTIO N AS REQUIRED.
Fig. 3. Internal schem atic and typical hookup diagram for T834C in standard heating-cooling system .
69-0444— 10
FAN SWITCH
ON
C1
AUTO
> ANTICIPATOR
k______
»WITCH
COOL
OFF
—
HEAT
Push excess wire back through the hole and plug
6.
any opening with insulation to prevent drafts that
may affect thermostat perform ance.
Loosely fasten the thermostat to the wall or outlet
7.
box with a screw through the top m ounting hole.
Adjust the thermostat so that it is approximately
level and start the second screw through the
bottom mounting hole. D o not tighten.
Level the thermostat exactly using a spirit level or
8.
plum b line. Tighten the m ounting screws.
IMPORTANT
An incorrectly leveled thermostat will cause the
temperature control to deviate from setpoint.
Replace the thermostat cover.
9.
FAN
SW IT C H
A
A
FAN SW ITCH AVAILABLE ON T834C ONLY.
Fig. 2. Internal view of T834.
R
<D —
)
a
HEAT
/ !
OFF
COOL
—
2
L1
(HOT)
M
L2
FAN RELAY
A
H v T -
HEAT R ELAY
K v 4 -
M8676
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