Honeywell CT1501 User manual

CTl500, CT1501, CT1502, CT1503
ELECTROMECHANICALFUELSAVER
THERMOSTAT AND
WALLPLATEEUBBASE
CTI500-24 V gas or oil heat.
CTl501-24
V gas or oil heat/cool.
CTI502--24
V centralelectric heat/cool or single stageheat pump without
auxiliary heat.
CTI
503-750 millivoltheat.
NOT
FOR USE ON LINEVOLTAGE (120 V) SYSTEMS.
INSTALLATION MANUAL
Any questionsconcerningthe application of thisthermostatshould bedirectedto HoneywellConsumerServices
at 1-800-468-1502, Monday-Friday
730 a.m.-500 pm., Centraltime.
S.M. Rev. 7-91 aHoneywell Inc. 1991 Form Number 69-0273-9

THERMOSTAT FEATURES
I-Front of thermostat.
HlGH TEMPERATURE
CONTROL LEVER
(RED)
1
LOW TEMPERATURE
CONTROL LEVER (BLUE)-
11.711
'THERMOSTAT THERMOMETER 1
COVER
Il-Hinged cover lifted.
.. .~ . ,..... .
"---
PROGRAM PINS A
Ill-Cover removed.
24 HOUR
PROGRAM
DIAL
ANTICIPATOR
HIND THERMOSTAT.
HELD ON BY TWO
CAPTIVE SCREWS.)
CAPTIVE MOUNTING

k PREPARATION
((1 "1
THERMOSTAT
MODEL
CT1500
CT1501
CT1502
SUBBASEOR
199986CWallplate
Q682A1079 Subbase
Q682B1227Subbase
WALLPLATE INCLUDED FOR USEWITH
2-wire, 15to 30 volt control circuit For gas or oil
heatingsystem.
4- or 5-wire, 15to 30 volt control circuit For gas
or
oil heating/cooling system.
4-wire,
15 to 30 volt control circuit. For single stage
heat pump or central electric heatinglcooling
systems that require the thermostat to control the
fan in heatino.
CT1503
aThermostat mustbemountedon wallplate
or subbase included in packageto assure operation.
0 Assemble tools required,as illustrated
199986DWailpate
[ 750 mill volt single-stageheatingsystem.
MASKING TAPE. IF NEEDED TO
LABELWIRESASTHEYARE
OISCONNECTED FROM OLD
0 THERMOSTAT

If wallplateor subbaseis mountedon avertical
outlet box (check old installation), order
196393A Cover Plateand Adapter Ring (seeappro-
priate figure under step 4). Call Honeywell
Consumer Services
(1 -800-468-1 502) for ordering
information, Monday-Friday, 7:30 a.m. to
500 p.m.
Centraltime.
Test to make certain that your heating and
cooling systems are working. If either one
does not work, contact your local heatingfair
conditioningdealer.
NOTE: Do not operate cooling system if outdoor
temperature
is below 50' F [loo C].
Turn off power to the heatingfcooling System
at the mainfuse panel.
F UNPACK THERMOSTAT
0
0 THERMOIIAT
Remove and discard shipping wrap. Save
Remove thermostat cover by lifting up from
the bottom.
Carefully remove insert protecting switch
0 bulbs.
Loosen
two captive mounting screws, and
0 separate wallplate or subbase from back of
thermostatbase.
package of screws, instructions and receipt
..
IFT
OVER
i2
SCREWS
12.612
2

F REMOVE OLD THERMOSTAT
0 “3
Remove cover of old thermostat. If the cover
0 doesn’t snap off when pulled firmly from the
bottom,check for a screw that locksthe cover on.
Before removing the old thermostat from the
0 wall, look at it carefully to locate the heat
anticipator adjustment mechanism. (See illustration
to help you recognize the heat anticipator.) Make a
note herellofthat anticipator setting for
future reference.
If your thermostat does not have a
heat anticipator,do not be concerned. Move on to
nextparagraph.
Loosen screws holdingthermostatto wallplate,
subbase or wall and liftaway.
Disconnect wires from old thermostat wall-
plate or subbase. Tape each wire and label
with the letter
of the terminal designation to make
reconnection easier.
If there are only two wires,
labelingis not necessary.
IMPORTANT
thermostatcannotbeused on your system.
EXCEPTION: The CT1502 thermostat can be
used on a system with Bor 0 terminals.
One or twoextra wires?
If you are replacing a Honeywell Chronotherm
thermostat,you may find one
or two wires that go to
the clock terminals on the Chronotherm thermostat
wiring wallplate. Do notallow them to touch, or you
may damage your transformer. Disconnect the
wires, and wrap them separately, using electrical
tape.
Do not wrap them together. Place the wires
where they will not interfere with the operation of
the new thermostat.Record the colors and terminal
designationlabelsof the rest of the wires.
3 69-0273-9
~

b MOUNT WALLPLATE OR SUBBASE
10 “4
If mounting on outlet box, mount as shown
on appropriate figure.
If mounting on wall, hold wallplate or sub-
base in position and mark holes on wall.
Use spirit level to make sure wallplate or
sub-
.’ ..
base will be level. Drill 3/16 in. holes and gently
tap anchors into holes until flush with the wall.
Position wallplate or subbase as shown in
appropriate figure, and loosely insert the
screws supplied.
4

n Carefully level the wallplate or subbase and firmly
u tighten screws.
..
SPIRIT LEVEL
‘‘wm WALLPLATE
SCREWS “2)
5 69-0273-9

WIRE WALLPLATE OR SUBBASE
MOTE: All wiring mustcomply with local electrical
Referto illustration and strip thermostat wire
insulation as necessary.
codes and ordinances.
0. :
F"rn ~STFldilRUT
. -. . - .. .. ..
CONNECTION-
-
FOR WRAPAROUND BARRIER
CONNECTION-
STRlP7116In.
[11 mml
For CT1500 heating-only
0
,
II
A POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
Wlll
OVERLOAD PROTECTION AS REOUIRED.
Connect either wire to R terminal and the
other wire to
W terminal. Firmly tighten
screws.
Push excess wire back into wall, and plug
0 hole In wall with nonflammable Insulation to
preventdrafts from affecting thermostat operation.
6

For CT1501 heating/cooling
Connect the wires to matching terminals on
the subbase.
4-WIRESYSTEM
U U
5-WIRESYSTEM
I
I I I
RELAY OR CONTACTOR
VALVE COIL
I I
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
M2&13
NOTE: If there are four wires, connect wire
marked
R to terminal RH and add a jumper
wire
to connect to RC. If RC is left uncon-
nected,the air conditioner will
not turn on. The
4-wire drawing
on this page showshowto jumper
RC to
RH. Strip the insulation off the wire
where ifconnectsto the terminals. Firmly tighten
screws.
I I
A POWER SUPPLY. PROVIDE DISCONNECT MEANSAND
OVERLOAD PROTECTION AS REOUIRED.
A INSTALL JUMPER BETWEEN RC AND RH.
Ma"
If the labels do not agree with the terminal
Refer to Table 2 on page 8
Determine correct hookup from the listed
control function and the equipment control
circuit
designations
on your new subbase
7 69-0273-9
~
~

OLDSUBBASE
TERMINAL
R or RH
RC
W
Y
G
B
0
P
Push excess wire back into wall. and plug
hole in wall with nonflammable insulation to
prevent draftsfrom affectingthermostat operation.
CONTROL FUNCTION
Heating transformer power to
control circuit
Cooling transformer power to
control circuit.
Heating relay or valve.
Cooling relay.
Fan relay.
Heating changeover valve or
damper control circuit.
Cooling changeover valve or
damper control circuit.
Heat pump compressor control
For CT1502 heatinglcooling
CENTRAL ELECTRICSYSTEM
I1
I- U
II
CONTACTOR RELAY OR
VALVE COIL
A POWER SUPPLY. PROVIDE DISCONNECT MEANSAND
M%1*
OVERLOADPROTECTION AS REOUIRED.
8