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Honeywell T451 Product Data

Motor-rated precision thermostats
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Motor-Rated Precision Thermostats
APPLICATION
The T651 thermostat provides direct, accurate line voltage
control of inductively-rated heating, ventilating, or cooling
equipment used in commercial or industrial environments.
The T451 provides precision line voltage control of motor-
rated electric, gas or oil heating equipment.
CL 4-01 • © Honeywell Limited/Limitée 2001
FEATURES
• Deluxe styling for commercial buildings.
• Industrial grade MICRO SWITCH™ mechanism
rated 1/2 hp inductive, 5 kW resistive.
• Vertical mounting on 2" x 4" NEMA-standard
single-gang outlet box.
• High-sensitivity, vapor-filled stainless steel dual
diaphragm sensing element.
• Engineering plastic base to isolate sensor from
switch heat and minimize droop.
• CSA Certified, UL Listed.
• Altitude compensation.
• 44°F (7°C) "frost protection" setting for heating
application, independent of calibration or altitude.
• Color-coded leadwire connections.
• Range stops/locking cover security features for
public areas.
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Setting and Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . 4
T451, T651
PRODUCT DATA
Contents
95C-10903-1

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  Summary of Contents for Honeywell T451

  • Page 1 The T651 thermostat provides direct, accurate line voltage control of inductively-rated heating, ventilating, or cooling equipment used in commercial or industrial environments. The T451 provides precision line voltage control of motor- rated electric, gas or oil heating equipment. CL 4-01 • © Honeywell Limited/Limitée 2001...
  • Page 2: Ordering Information

    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 Honeywell Home and Building Control Sales Office (check white pages or phone directory). 2. Home and Building Control Customer Satisfaction Honeywell Inc., 1885 Douglas Drive North.
  • Page 3 T451, T651 MOTOR-RATED PRECISION THERMOSTATS WHEN INSTALLING THIS PRODUCT: 1. Read these instructions carefully. Failure to follow instructions can damage product or cause a hazardous condition. 2. Check ratings given in instructions and on product to make sure product is suitable for your application.
  • Page 4: Check Out

    Altitude Compensation T451, T651 units are calibrated at the factory for accuracy at 500 feet above sea level. No recalibration is needed if the switch operates at the same temperature indicated on the thermometer.

This manual is also suitable for:

T651T451a spstT451b dpst