Honeywell T4159A User Manual

APPLICATION

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The T4159A thermostat provides line voltage control of inductive or
resistive-rated space heating equipment.

• Industrial grade MICRO SWITCH

N inductive or 5 kW resistive

TM

mechanism rated 1/4 HP

• Vertical mounting on 2” x 4” single gang outlet box

• Color-coded leadwire connections

• CSA Performance Certified: 16A resistive, 208/240 V

• Optional range stops/locking cover security kit available

SPECIFICATIONS

MODELS:

T4159A SPST [formA] heating only.

DIMENSIONS:

Height x Width x Depth x -d (projection into box)
115mm x 74mm x 43mm x -24mm
(4-1/2” x 2-15/16” x 1-11/16” x -15/16”)

MOUNTING:

NEMA single gang box (83+1 mm screw centers).

CONTROL RANGE:

5°-27°C (40°-80°F), marked 1,2,3,4,5

ELECTRICAL RATINGS

NEMA single gang box (83+1 mm screw centers).

50/60 Hz 120 V 280 V 240 V 277 V
Full Load Amperes 5.8 3.3 2.9 2.5
Locked Rotor Amp 34.8 19.8 17.4 15.0
NEMA motor
Resistive 19 A.N.I.
Heating Only 2.5 kW 4.5 kW

Canadian Standards Association Certified File Number LR1322

1

PHASE
(HOT)

BLACK

POWER SUPPLY. PROVIDE OVERLOAD PROTECTION AND

1

DISCONNECT MEANS.

2

CONTACT MAKES BLACK TO RED ON TEMPERATURE FALL.

Fig. 1 — T4159A Wiring

2003.03.18 © Honeywell Limited.

(not combinable)

1/4 horse

22A Non-inductive

2

RED

:

ower

5 kW

TO
HEATING
LOAD

T4159A

Motor-Rated Thermostat

INSTALLATION AND CHECKOUT

CAUTION:

!

1. Disconnect power supply before installing to prevent
electrical shock hazard.

2. Installer must be a trained, experienced service technician.

3. All wiring must comply with national and local electrical
codes, ordinances, and regulations.

4. Special service CO/ALR solderless wire connectors MUST
be used when connecting to aluminum conductors to
prevent a fire hazard.

MOUNTING:

Position thermostat on inside wall about 1.5m (5’) above
the floor, mounted on 2” x 4” vertical outlet box. A 4” square
junction box requires mud ring adapter (not provided). Do not
mount thermostat where it can be affected by drafts, radiant
heat from the sun, or other sources of heating or cooling.

Wire per Fig. 1.

Remove cover by pulling out at the bottom. Install optional
range stops and cover locking kit, if required. Screw base to
electrical box. Do NOT press on the bi-metal sensor or setpoint
knob to seat thermostat on the box; thermostat will be
damaged.

SETTING AND CHECKOUT:

Turn on the power. Raise the temperature setting to 5 to
energize the heating load. The heater will turn on. Heat will
turn off when air temperature rises to the setpoint.

Lower the temperature setting to 1 to de-energize the
heating load. The heater will turn off.

To de-energize the heater for the summer months,

power at the circuit breaker panel, or turn knob to the stop at
the full counter-clockwise position.

turn off

Form No. 95C-10877