Honeywell T4800A User Manual

68-0151-1

GENERAL

T4800A Precision Electronic

Electric Heating Thermostat

PRODUCT DATA

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.

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.

CONTENTS

General ............................................................................... 1

Features .............................................................................. 1

Specifications ...................................................................... 2

Ordering Information ........................................................... 2

Installation ........................................................................... 3

Setting and Checkout .......................................................... 4

Operation ............................................................................ 4

T4800A PRECISION ELECTRONIC ELECTRIC HEATING THERMOSTAT

SPECIFICATIONS

IMPORTANT

The Specifications given in this publication do not include normal manufacturing tolerances. Therefore, this unit may not exactly match the listed specifications. Also, this product is tested and calibrated under closely controlled conditions, and some minor differences in performance can be expected if those conditions are changed. For exact engineering specifications, contact your Honeywell sales representative.

TRADELINE® Models

TRADELINE® models are selected and packaged to provide ease of stocking and handling and also maximum replacement value. TRADELINE® model specifications are as follows:

Model:

T4800A makes heating circuit on temperature fall. Single pole, single throw. (See Fig. 2.) Range: 40° to 80°F (5° to 25°C).

Type of Switching:

Cool Switch Triac/relay combination.

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 (ordered separately).

Approvals:

CSA certified: LR1322. Underwriters Laboratories Inc. Listed: File No. E47434,

Guide No. XAPX.

3-1/8 (80) 1-5/16

(34)

1-5/16 (34)

Wiring Connections:

6 in. (150 mm) stranded copper leadwires, suitable for connecting to aluminum wiring when approved special service CO/ALR solderless connectors are used.

Electrical Rating:

Noninductive (resistive) rating:

2.7A minimum (750W @ 240V; 560W @ 208V) to 16A maximum (3800W @ 240V; 3300W @ 208V)

°F

4-3/4 (120)

3-1/4 (82)

3/4 (19)

Performance Certification:

16A at 208 or 240 Vac.

Performance Specifications:

Fig. 1. Nominal dimensions in in. (mm).

7/8 (23)

M7102

Precision: ±1°F (0.5°C) differential with thermistor time

constant of 10 seconds.

ORDERING INFORMATION

When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the TRADELINE® Catalog or price sheets for complete ordering number or specify

1. Model number

2. Voltage.

If you have additional questions, need further information, or would like to comment on our products or services, please write or phone:

1. Your local Home and Building Control Sales Office (check white pages of your phone directory).

2. Honeywell Customer Relations Honeywell, 1885 Douglas Drive North Golden Valley, Minnesota 55422-4386

In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Dr, Scarborough, Ontario M1V 4Z9. International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France, Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.

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