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63-2051—4
J. H. • Rev. 9-92 • ©Honeywell Inc. 1992 • Form Number 63-2051—4
T451, T651, T694 Thermostats provide on-off
control of valves, fans, motors, contactors, electric
heat elements, duct furnaces and fan coil units in
heating/cooling systems. Switching subbases pro-
vide manual control of heating, cooling and fan.
T451A, T651A, T694A,B,D,F
Light Duty
Line Voltage Thermostats
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Thermostats use spst or spdt snap switches activated
by bimetal sensor.
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T451A/T651A mount on standard vertical or horizon-
tal junction box.
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Options include adjustable range stops, locking cover,
concealed setpoint, locking setpoint, positive off con-
trol, cover thermometer.
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T451A provides heating control only.
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T651A provides heating and cooling control.
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T694A,B,D,F supplied with switching subbase to pro-
vide manual control of heating, cooling and fan.
■
Q473A,B switching subbase available for T451A/
T651A.
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Automatic cooling anticipator for 120, 208, 240 and
277 Vac.
T694A
T694B,D,F
T451A,
T651A
CONTENTS
Specifications ................................................. 2
Ordering Information ..................................... 2
Installation ..................................................... 4
Checkout ......................................................... 7
