Installation - Honeywell T4398A1021 - Electric Heat Thermostat Product Data

FRONT VIEW
80
•
70
•
60
•
50
•
˚F
4-3/8
(111)
2-7/8 (73)
Fig. 1. T4398 approximate dimensions in in. (mm).
RECYCLING NOTICE
If this control is replacing a control that contains
mercury in a sealed tube, do not place your old
control in the trash.
Contact your local waste management authority for
instructions regarding recycling and the proper
disposal of any control containing mercury in a
sealed tube.

INSTALLATION

When Installing this Product...
1. Read these instructions carefully. Failure to follow these
instructions could damage the product or cause a
hazardous condition.
2. Check the ratings 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
operation as provided in these instructions.
WARNING
HIGH VOLTAGE CONTROL.
ELECTRICAL SHOCK HAZARD.
Follow local codes and ordinances when installing this
thermostat. Improper handling can cause serious
injury or death.
T4398A,B HIGH PERFORMANCE ELECTRIC HEAT THERMOSTATS
SIDE VIEW
3/4
1/2 (13)
1-3/4
(19)
(48)
2-1/8
(54)
3-1/4
(83)
1/2 (13)
1-1/2
M5795A
(39)
CAUTION
1. Disconnect power supply to prevent electrical
shock or equipment damage.
2. If connecting with aluminum conductors, use CO/
ALR solderless wire connectors to avoid fire
hazard.
3. Do not remove thermostat cover until wiring is
complete to avoid damaging the sensing element.
Location
Install a vertical outlet box, which is used to mount the
thermostat on, about 5 ft (1.5 m) above the floor in an area
with good air circulation at room temperature.
Do not install the thermostat where it may be affected by:
— drafts or dead spots behind doors, in corners or under
cabinets.
— hot air from convectors.
— radiant heat from sun or appliances.
— concealed pipes and chimneys.
— unheated (uncooled) areas such as an outside wall
behind the thermostat.
Wiring and Mounting
CAUTION
1. Handle the thermostat with care to avoid
damaging the sensing element or control.
2. Use a separate limit control in the heating
appliance.
IMPORTANT
If locking cover feature is desired, insert the locking
cover clip in the thermostat base before mounting
the thermostat on the wall. See Fig. 7.
Replacement Applications
Disconnect power to thermostat to prevent electrical
shock or equipment damage. All wiring must comply
with local electrical codes and ordinances.
Remove the old thermostat from the wall, taking care
not to damage the wiring insulation.
Check the old wire insulation for cracks, nicks or fraying.
Apply approved electrical tape to insulate wires or
replace wires as necessary.
Do not remove T4398 Thermostat Cover. Using wire
connectors approved for No. 12 wires, make line
voltage connections directly to leadwires on thermostat.
See Figs. 2 and 3 for typical wiring connections.
Prebend and push solid wires into the outlet box.
Remove the thermostat cover by grasping the top and
bottom edges and pulling outward away from the base.
Turn the setting dial so the indicator is at the 12 o'clock
position to prevent damaging the sensing element when
mounting the thermostat.
Mount the thermostat on the outlet box as shown in
Fig. 4. Secure the thermostat by tightening the two
mounting screws.
3
68-0147—2