Honeywell T498A User Manual

PRODUCT DATA
Copyright © 1996 Honeywell Inc. • • All Rights Reserved
X-XX UL
T498A,B
Electric Heat Thermostats
FEATURES
• CSA Performance Certifled at 16A.
• CSA Certified, Underwriters Laboratories Inc. Listed
up to 5 kW at 277 Vac.
• Long life, industrial-grade Micro Switch™ mechanism.
• Rugged, engineering plastic mounting base with
captive mounting screws.
• Replaces any standard wall-mounted electric heat
thermostat.
• Classic beige styling.
• Range: 40°F to 80°F (5°C to 25°C).
• Locking cover and range stops are optional.
• Energy efficient and economical.
Contents
General ............................................................................... 1
Features ..............................................................................1
Specifications ...................................................................... 2
Ordering Information ...........................................................2
Installation ........................................................................... 3
Setting and Checkout ..........................................................4
Security Features ................................................................4
Calibration ........................................................................... 5
GENERAL
The T498A,B Electric Heat Thermostats provide line voltage
control of electric heating equipment. A snap action switch
makes heating circuit on temperature fall.
95C-10686-3

Honeywell T498A Specifications

General

Hold Feature	Yes
Filter Change Alert	Yes
Weight	0.5 lbs
Switching Action	SPST
Sensor Element	Thermistor
Mounting	Wall Mount
Temperature Range	40°F to 90°F
Power Source	Battery
Compatibility	Single Stage Heating
Programmability	Programmable

Summary

GENERAL

FEATURES

SPECIFICATIONS

Models and Switching

Details T498A/B models, switching types, and wiring connections.

Performance Specifications

Covers setting range, differential, thermometer, and electrical ratings.

Approvals and Mounting

Lists certifications, approvals, mounting means, and optional accessories.

INSTALLATION

Location Guidelines

Provides guidance on the optimal placement for installing the thermostat.

Mounting and Wiring Procedures

Details the process of mounting the thermostat and making electrical connections.

SETTING AND CHECKOUT

SECURITY FEATURES

Locking Cover Installation

Explains how to install and use the locking cover for security.

Range Stop Configuration

Describes how to install and use range stops to limit temperature adjustments.

CALIBRATION

Calibration Check

Outlines the procedure to verify the thermostat's calibration accuracy.

Recalibration Process

Provides step-by-step instructions for recalibrating the thermostat if needed.