HONEYWELL T4054B (01) PDF Document

The HONEYWELL T4054B line voltage thermostat provides SPST or SPDT line voltage control in ventilation, heating, or cooling applications. Its features include:

☐ Suitable for mounting in any position.

☐ Spst or spdt snap-acting switch.

☐ Fast response, hydraulic temperature sensitive element.

☐ Compact size.

☐ Wide temperature range.

☐ Temperature setting knob and setting scale on front of thermostat.

MODEL: T4054B Industrial Line Voltage Thermostat-spst switching; for cooling applications.

MAXIMUM TEMPERATURE DEVICE MAY BE EXPOSED TO: 125 F [52 C].

UNDERWRITERS LABORATORIES INC. LISTED: File No. E4436, vol. 5, 8-21-72, Guide No. XAPX.

DIFFERENTIAL: 3/5 F [1.9 C] fixed.

SWITCHING: Switch actuated by hydraulic temperature sensing element on change in temperature. The T4054B has spst switching and makes R to W on temperature rise.

SCALE RANGE: plus 30 to plus 110 F [minus 1 C to plus 38 C] (scale marked in 2 F [1 C] increments).

MOUNTING: Mounts on wall with 3 screws.

COLOR: Gray.

DIMENSIONS IN in. [mm]: 7-5/8 x 2-5/8 x 2 [193.7 x 66.7 x 50.8].

When installing this product, please follow these instructions:

1. Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous condition.

2. Check the ratings given in the instructions and 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.

Select a location about 5 ft [1.5 m] above the floor in an area with good air circulation at average temperature.

Do not mount the thermostat where it may be affected by:

– drafts, or dead spots behind doors and in corners.

– hot or cold air from ducts.

– radiant heat from the sun or appliances.

– concealed pipes and chimneys.

– unheated (uncooled) areas behind the thermostat.

The thermostat may be mounted in any position. To mount the thermostat, use the following procedure:

1. Remove the thermostat cover by unscrewing the single screw on the face of the control.

2. Remove the knockout from the case.

3. Mount the control at the selected location with three screws.

4. Run conduit between the thermostat, the power source, and the unit being controlled.

5. Run wiring through the knock out hole and make connections. Refer to Wiring section.

NOTE: Wiring should not interfere with the adjusting knob.

CAUTION: Disconnect power supply to prevent electrical shock and equipment damage.

All wiring must comply with applicable electrical codes and ordinances. Refer to heating and/or cooling equipment manufacturer’s instructions or refer to the figures in the manual for typical hookups.

After completing installation and wiring, check the controller operation as follows:

1. Turn on the power.

2. Turn the adjustment knob to move the temperature dial across the indicator and back again. If the wiring is correct, the controlled equipment will switch on and off as the temperature dial indicates the approximate space temperature.

3. If the controlled equipment does not start and stop as the thermostat dial is turned, disconnect the power supply and check the wiring and terminal connections.

4. If the controlled equipment operates opposite to the sequence desired, shut off the power and check for reversed leads on the switch.

When the control is wired for a cooling or ventilating application (R to W), turning the dial clockwise to a lower setting simulates a rise in temperature, and the cooling or ventilating equipment should come on.

For a heating application (wired R to B), turning the dial counterclockwise to a higher setting simulates a space temperature drop and the heating equipment should come on.