Honeywell CT50A User manual

CT50A. CT51 A,

CT52A-, CT53i

Thermostats

INSTALLATION INSTRUCTIONS

CELIA is for most gas and oil

heating systems.

CT53A is for millivoltage heating systems.

Do-it-yourself models

PREPARATION

CONTENTS STEP

PREPARATION 1

THERMOSTAT FEATURES 2

REMOVING OLD THERMOSTAT 3

WIRE AND MOUNT NEW THERMOSTAT 4

CHECK OUT THE THERMOSTAT 5

THERMOSTAT SETTING 6

TROUBLESHOOTING 7

RECALIBRATE THERMOMETER 8

CHECK OUT

THE

THERMOSTAT

operates.

OFF-heating and cooling sys-

tems are disconnected.

COOL--cooling system only

operates.

The fan switch COntrOiS a*

fOllOWS:

AUTO-fan operates when

heating or coaling system

operates.

ON--fan operates continu-

ous,y.

THERMOSTAT

SETTING

q

On CTS,A. ,,lace the sys-

tem and fan switches at

the desired setiings for operation.

q ona,,models.mc’“eihe

temperaturesettingiever

to the desired temperature com-

,ort level.

Major swings

RECALIBRATE THERMOMETER

if the thermostat set point and the

thermometer reading da not agree. the Fo;;rftilneadings are the same.

replace cover and put the system

thermometer may need recalibration.

FO,,OW the proceduy below.

0

q -’

I,thereadingsaredifferent,in*ert

RemovethermostatCO”fzl.

a hex head wrench in the ther-

mometer shaft and turn it until the

q setthecoveronatablenearantheimometel~hz3”ethesamereading.

accuratethermometer.

q intooperation.

Replace cover and put the system

This manual suits for next models

3

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