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

CT1502, continued
SINGLESTAGE HEAT PUMP
(WITHOUT AUXILIARY HEAT) SYSTEM
I- -1
For CT1503 750-millivolt heating
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
prevent draftsfrom affecting thermostat operation.
0 0
/ 1
L' +
(HOT)
u+
A POWER SUPPLY PROVIDE DISCONNECT MEANS AND
OVERLOPD PROTECTIONAS REQUIRED
A IFCOMPRESSOR ISCONNECTEDTOOLDTHERMOSTATS
"YTERMINALWITH A JUMPERTO"W,USE NEW THERMOSTATS
"PTERMINALFORCOMPRESSOR. IFOLOTHERMOSTATHAS
ONE WIRETO"Y"AND0NETO
"W. USt'Y AND "W'ON NEW
THERMOSTAT,
DO NOT USE"P. IMPORTaNT- IF OLD
THERMOSTAT USES
A W2 (AUXILIARY OR EMERGENCYHEAT)
TERMINAL,THIS THERMOSTAT MAY NOT BE USED THIS
THERMOSTAT IS NOT DESIGNED TO CONTROL AUXILIARY HEAT
M211511
A SOMEHEATPUMPSUSE"B"INSTEAD0F"O'
Connect the wires to matching terminals on
Push excess wire back into wall, and plug
prevent drafts from affecting thermostat operation.
0 the subbase. Firmly tighten screws.
0 hole in wall with nonflammable insulation to
CQZOOA OR
0313A
THERMOPILE
M24IB
9 69-0273-9

-
L
MOUNT THE THERMOSTAT
or subbase as shown in illustration.
Do NOT cycle heating system until Step 7 is
completed.
10

-
SET HEAT ANTICIPATOR LEVER
NOTE: Notapplicable on CT1503 millivolt model.
The thermostat's adjustable heat anticipator
0 must be correctly set to accurately control
the on-time length of the system. An incorrect
setting can result in room temperature swings or
burn out the anticipator and void the thermostat
warranty.
Make sure you have the current draw (antici-
pator setting) for your system. This
is the number
you wrote in the
box in Step 3 If you were unable
to findthe current draw for Step
3, this information
can be found printed on
the primary control at the
furnace or boiler.The primary control is usually
a
gas valve a relay or burner controi box, Aquastat
controller or zone valve with the thermostat wires
connected to it These controls are usually located
behind the furnace cover See next illustration
If current rating is still unavailable, proceed as
follows:
Coqnect the probes of an ac ammeter (0 to
2.0 A, for example) between R (or RH) and
W terminals on the wallplate or subbase.
Letthe system operate through the ammeter
for at least one minute before taklng reading.
Recordthe reading here

On the CT1500. CT1501 or CT1502 thermo-
stats, move the heat anticipator indicator to
match the number you recorded in Step
4 or
found
on the primary control as shown above, or
as recorded
in Step 7
\ANTICIPATOR 11,7164\
SETTING LEVER
INSTALL
TIMER
F BATTERIES
0 “8
teries in thermostat as shown. Once a year, or
when batteries are dead, replace with two new
AAA alkaline batteries. Other types of batteries
are more likely to leak, which could damage the
timer. The thermostat itself will operate without
batteries,but will
not operate as a fuel saver.
12

SET TIMER
Adjust the timer by moving the knob in
0 clockwise direction. Do NOT
reverse the knob.
When time is correctly set, the Time Indicator
Arrow (see illustration) must point to the
correct time and the corresponding daytime (lighr)
or nighitime (dark) portion
of the program dial.
13
69-0273-9

I- ATTACH THERMOSTATCOVER
0 “10
Makesure the packing inserts inthe thermo-
0 stat base have been removed. as explained
in step
3
Place the two tabs on upper edge of cover
into mounting
slots in thermostat base
Swing cover downward until it engages
0
0 catch at bottom of base
..
14

CHECK OUT THERMOSTAT
OPERATION AND SET
TEMPERATURE CONTROL
b LEVERS
cn il 1
The two levers on top of the thermostat
control the
low and high temperature for
energy savings and comfort control, as shown in
illustration.
LOW TEMP.lBL"E MARK1
SET LEVER
1
I
Do NOT check operation by shorting across terminals of relay or valve coil; this will burn out the
thermostat heat anticipator, which will void the warranty.
15
~
69-0273-9

Heating-only System
0 Turn on power to the furnace.
0 Pushbothtemperaturecontrol leverstogetherat
least
5" F [3" C] above room temperature. The
heatshould comeon.Thefanwill startwhenthe
furnace heats
up.
0 Moveboth levers5" F [3" C]belowroomtemper-
ature. The heat should shut
off.
0 Operate the entire heating system for at least
one complete cycle.
IMPORTANT
If thermostat fails any test, refer to trouble-
shooting guide inowner's manual.
Heating/Cooling System
0 Turn on power to the furnace and cooling
system.
fan switch leverat AUTO.
0 Placethe system switch lever at HEAT and the
0 Pushbothtemperaturecontrol leverstogetherat
least
5'F [3"C] above room temperature. The
heatshould comeon.Thefan will startwhenthe
furnace heats up. On the CT1502, the fan will
start immediately.
0 Moveboth leverstogether5"F[3"C]belowroom
temperature. The heat should shut off. The fan
will stop when the furnace cools.
IMPORTANT
the cooling system if outdoor temperature is
below
50°F [lO°C]. Refer to manufacturer's
recommendations.
0 Placethe system switch lever at COOLandthe
fan switch lever at AUTO.
0 Pushbothtemperature control leverstogetherat
least
5O F [3" C] below room temperature. The
cooling equipment should operate, and the fan
will start. Allow for any time delay that may be
built intothe compressor control circuit.
0 Movebothleverstogether5°F[30C]aboveroom
temperature.Thecoolingequipment should shut
off.
0 Place the fan switch at ON. The fan should run
continuously with the system switch in any
position.
0 Place the system switch at OFF. Move both
temperature: levers to various positions. The
heatingandcoolingsystemsshould notoperate.
0 Operate the entire system for at least one
complete cyclewiththe systemswitch at COOL
andone complete cyclewiththeswitch at HEAT.
IMPORTANT
If thermostat fails any test, refer to trouble-
shooting guide in owner's manual.

0 After checkout, reset bothtemperature leversto
desired temperatures.
For heatingseason:
[? Move the blue lever to the energy savings
temperature youwant when youare sleeping or
your home isnot occupied.
0 Setthered levertothetemperatureyou want for
normal comfort periods.
For cooling season:
0 Move the red lever to the energy savings
temperature you want when
you aresleeping or
your home is notoccupied.
0 Setthebluelevertothetemperature youwantfor
normal comfort periods.
REFER
TO THE OWNERS MANUAL FORM 69-
0333FOR OPERATING AND PROGRAMMING
INSTRUCTIONS.
IF YOU HAVE OUESTIONS REGARDING THE
INSTALLATION OF THE HONEYWELL FUEL
SAVERTHERMOSTAT,PLEASECALLOUR TOLL-
FREE CONSUMER SERVICES GROUP NUMBER
AT
1-800-468-1502, MONDAY-FRIDAY,7:30 AM -
5:OO PM CENTRALTIME.
17
69-0273-9

Honeywell
Residential and
Building ControlsDivision
740 Ellesmere Road
Scarborough, Ontario
M1P 2VY
Helping You Conlrol Your World
Residential and
Building Controls Division
Honeywell Inc. Honeywell Limited-Honeywell Lunltke
1985Douglas Drive No.
Golden Valley, MN 55422