Pentax CT53A, CT51A, CT50A Installation Instructions

i

I

TALU

CTSOA, CT51A, CT53A

THERMOSTATS

CTSOA

Heating only

with

most

oil

heating

systems

HeatinglCooling

with

most

oil

heating

750

Rev.

systems

heatlng

millivolt

9-97

Millivolt

2

wire

4

wire

systems

R.T.

gas

gas

only

CT51

A

Form

Compatible

Compatible

CT53A

For

No.

69-02658-2

and

CTSlA

and

250,500,

PREPARATION FOR
INSTALLATION

1

Assemble

screwdriver

IMPORTANT

If the model number under the cover of your existing thermostat begins with the same
series of numbers as listed below, the Honeywell thermostat is compatiblewith-and can
be

installed on-yourexisting heating system. If notwe recommend that you contact your

local

heating contractor or dealer for professional installation.

T11~l~KMA1K54/r8022/T81~819K8~8~K~K87K~H26O-~Ol/

TMl1KM81C/TM17H-124E/lC30-10/1

1F30-311HF30-13/1F30-910

CT53A

FOR

MILLIVOLT

Make

0

contractor.

certain that your burner is operating especially if

inoperative

for

tools

required;

level

wirestripper

E30-10/1E30-11/1E30-910/lF30-10/1

SYSTEMS-Replaces TS822/1 E30-M)9/1 F30-604/1 F30-910

it

any length of time.

If

it

does not work, contact your

has been

local

F30-301/

heating

REMOVING OLD

THERMOSTAT

2

Begin

by

turning

off

residential systems have aseparate switch boxorcircuit breaker fordisconnecting

Moveowerof

Efonehrna-*

the bottom.

For

CTMA, CT51A

indication is showing, do not

0

Loosen

screws holding thermostat

Retain

the

is

funotioning

power to the heating system at the main fusepanel.Most

dd thermostatcover normally snaps off when pulled firmly from

if

it

resists,

check

for

a

screw

that

locks

the cover on.

Installation

old

smoothly.

thermostat from the wall, look

ent mechanism.

Make a note here

be

set

at

one

be

concerned; move on

thermostat for reference purposes until your newthermostat

See

to

exactly the same setting. The heat antidpator

of

a series

of

to

the wall, and

at

it

illustration under step 3 to help you

numbers representing the arrrent

to

carefully

of

the antidpator setting

the next step.

lift

away.

to

locate the

service.

for

a

period

of

one

(1)

thewanantyperkd, aprcductis

Thiswarrantyshall

damage

which

Hineywell's

above.

HONEYWELL SHALL NOT BE LIABLE FOR ANY CONSEQUENTIAL DAMAGES RESULT­INGFROM ANY BREACHOFANY WARRANTY. EXPRESSEDOR
PRODUCT.

damages,

so

THIS

WARRANTY
THE WARRANTIES
HEREBY

EXCLUDEDBMONDTHEONEYEARDURATDNOFTHE

andtenlorriesdorotalbwlimlatbnonthedurationo(animpliedwarrarly,sotheabovellmlationmay

not apply

to

This

warranty

according

to pmvlnceorterrkory. This warranty

fmmwarrantiesandotherrights

BatterieslncludedwlthBatreryCperated

manufactured

if

any.

not

apply

occurred

while the product was in the pogsesslon of aconsumer.

sole

responsibility shall

Some

provinces

this limilation may

IS

IN LIEU OF ALL OTHER WARRANTIES, EXPRESSEDOR IMPLIED, AND

OF

MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

you.

glves

you

by

Honeywell

if

it

shown by Honeywell that the

be

to

repalr

and

territories

do

nd

spedfic

andremedies

Umiled.

not

apply to

you.

legal

rights

is

contained

Productsareexdudedfrnmthewanantyastheyarend

Such

baneries

defect

or malfunctbn was

or

replace the product wkhln the therms stated

albw

and

you

In addition

are

covered

1MPLIED.APPLiCABLETOTHIS

the exclusbn or limitation of consequential

WARRANTY.Somepmvinces

may ako have
to

and

InStatutesrehtingtothesaleofthlsprodud.

by battery

not

a

other

modlication

manu(aclurePs

year from

defective

caused

rights which

of

or

subtractbn

Warrantv

by

vary

YOUR

HONEYWELL THERMOSTAT

Your new Honeywell CT50A Heating Thermostat will replace most 15
heating system thermostats. The CT5OA will control most gas
(NOT for heating/cooling

Your new Honeywell CT51A Heating/Cooling Thermostat will replace most 15
4-wire, heatingkooling system thermostats. The CT51A is suitable only for
heatingkooling systems (NOT

Your new Honeywell CT53A Heating Thermostat is suitable for
(mV) heating systems only.

WIRE

-NEW

or

heat pump systems).

for

heat pump systems).

AND MOUNT

THERMOSTAT

to

or

250,500

30

oil heating systems

or

750

-

3

Connect one of the 2 wires from the wall
of the thermostat. Tighten the screws.

Connect4wires from thewall to matching terminalson backof thermostat.Tighten
the screws.

CAUTION

to

each

of

the

two

terminals on the back

V,

2-wire

to

30

gas

millivolt

V.

or

oil

Connect wires to R and W for 750 mV systems. CQnRect to

0

mV systems. Tighten the screws.
Grasp the thermostat cover at the top and bottom with one hand. Pull

outwardon the topedgeofthe thermostatcover until itsnaps freeofthe thermostat

Q.

Carefully remove and discard the red plastic pin located above the mercury switch.
This pin protects this switch during shipment.

0

Fasten thermostat

1

mounting hole.

Place

your

screw,

supplied, in the center of the

Recheck

for

to

the wall with one

level across the top of the level it. Start the second

level positioning then

bo

firm1

of

the screws supplied, using the top

R

and

Y

Par

Ole.

ounting screws.

I7

If

Installing

P

or

The primary control is usually a gas valve, zone valve,
with the thermostat wires connected
below).

On

CT50A, CT5lA
MAKE SURE you have the current (anticipator setting) for your system.This is the
number you wrote in the box in step

step 2 this information can

the

CT50A CTSlA

be

2.

If

found printed on the primary control at the furnace.

to

you were unable

it.

(See

illustrations Of 3 types

OIL

BURNER CONTROL

or

to

find the current draw

a relay

or

burner control

of

primary controls

250

or

500

box

TERMINAL SCREWS

ICTSlA

SYOWN\

TOP MOUNTING HOLE

ANTICIPATOR SETTING LEVER

TEMPERATURE SETTING LEVER

ADJUSTABLE HEAT

(CT5OA, CT5lA ONLY)

MOUNTING CLIPS

(FOR COVER)

FAN SWITCH

(CT51A ONLY)

SYSTEM SWITCH

(CT51A ONLY)

BOTTOM

MOUNTING HOLE