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PRODUCT DATA

Copyright © 1996 Honeywell Inc.   •            •   All Rights Reserved

68-0151-1

T4800A Precision Electronic

Electric Heating Thermostat

GENERAL

The T4800A Electric Heating Thermostat provides precise,
accurate line voltage control of resistance-rated heating
equipment. A patented Cool Switch™ design activates the
heating circuit on temperature fall and results in longer life for
the thermostat.

FEATURES

CSA Certified and Performance Certified, Underwriters
Laboratories Inc. Listed. Conforms to NEMA standard
DC3 for thermostat accuracy.

Rugged, molded thermoplastic mounting base with
captive mounting screws.

Energy efficient and economical.

Patented electronic switch requires no leveling.

High sensitivity, solid-state temperature sensing
element.

Nonpolarized leadwire connections.

Adjustment range is 40

°

 to 80

°

F (5

°

 to 25

°

C).

Premier White® finish.

One-piece decorative cover.

Red LED status indication.

Suitable for noninductive rated fan-forced heaters,
radiant cable or convectors.

CONTENTS

General ...............................................................................

1

Features .............................................................................. 1
Specifications ......................................................................

2

Ordering Information ...........................................................

2

Installation ........................................................................... 3
Setting and Checkout ..........................................................

4

Operation ............................................................................

4

Summary of Contents for T4800A

Page 1: ...writers Laboratories Inc Listed Conforms to NEMA standard DC3 for thermostat accuracy Rugged molded thermoplastic mounting base with captive mounting screws Energy efficient and economical Patented electronic switch requires no leveling High sensitivity solid state temperature sensing element Nonpolarized leadwire connections Adjustment range is 40 to 80 F 5 to 25 C Premier White finish One piece ...

Page 2: ...nt of 10 seconds Accuracy 1 F 0 5 C droop average for range of loads Conforms to NEMA DC3 standard applied to low voltage thermostats Setpoint Adjustment Control knob on front of thermostat Sensing Element Electronic thermistor Dimensions See Fig 1 Red LED Indicator Lights as heat comes on Mounting Means Mount directly on vertical 2 x 4 inch outlet box or on 4 x 4 inch outlet box with ring adapter...

Page 3: ...ications 쐃 Disconnect power to the thermostat to prevent electrical shock or equipment damage All wiring must comply with local electrical codes and ordinances 쐇 Remove the old thermostat from the wall taking care not to damage the wiring insulation 쐋 Check the old wire insulation for cracks nicks or fraying Apply approved electrical tape to insulate wires or replace wires as necessary 쐏 Carefully...

Page 4: ...setting as necessary moving the knob only one or two degrees at a time The precise temperature control of the T4800 allows the user to select a lower temperature setting which saves energy while maintaining comfort OPERATION The T4800 Thermostat provides precise temperature control with minimum droop of resistance rated electric baseboard heating equipment The T4800 controls room temperature withi...

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