Honeywell T4098A Deluxe Electric Heat Thermostat Instruction Manual

Honeywell T4098A Deluxe Manual: Questions and Answers

What is the maximum amperage rating for the Honeywell T4098A Deluxe?

22A at 120/208/240 Vac, 60 Hz, or 19A at 277 Vac, 60 Hz. Instruction Manual, p. 2

Can the Honeywell T4098A Deluxe control both fan-forced and baseboard electric heaters?

Yes. It provides high performance line voltage direct control of both types of resistance-rated electric heating equipment. Instruction Manual, p. 1

How do I mount the Honeywell T4098A to an outlet box?

Mount directly on a vertical 2 x 4 in. outlet box, or on a 4 x 4 in. outlet box using a ring adapter ordered separately. Instruction Manual, p. 2

What do the knob and dial controls on this thermostat do?

Turn the setting knob clockwise to start heating equipment and fan, counterclockwise to stop. The temperature setting dial underneath adjusts calibration.

Instruction Manual, p. 5

What does the dual diaphragm sensing element in the Honeywell T4098A do?

It's more sensitive to temperature changes than a bimetal sensor, enabling precise control within 2°F accuracy. Instruction Manual, p. 6

What does minimum droop mean on the Honeywell T4098A Deluxe?

The thermostat controls temperature more precisely despite heat generated internally. Standard electric heat thermostats droop 2° to 4°F, but this model minimizes that variation. Instruction Manual, p. 6

How do I set up the Honeywell T4098A Deluxe after installation?

Run checkout to verify wiring and operation are correct.

1. Turn the setting knob clockwise until you hear a click; the heater should start.
2. Turn the knob fully counterclockwise; the heater should stop.
3. Let the thermostat run for several hours to verify the temperature setting is appropriate, then adjust as needed. Instruction Manual, p. 6

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