CTl500, CT1501,
CT1502,
CT1503
ELECTROMECHANICAL FUEL SAVER
THERMOSTAT AND
WALLPLATEEUBBASE
CTI500-24
CTl501-24
CTI502--24
V
gas
or
oil heat.
V
gas
or
oil
heat/cool.
V
central electric heat/cool
auxiliary heat.
CTI
NOT
503-750
FOR
millivolt heat.
USE
ON LINE VOLTAGE
INSTALLATION MANUAL
Any questions concerning the application
at
1-800-468-1502, Monday-Friday
730
or
single stage heat
(120
V)
SYSTEMS.
of
this thermostat should be directed to Honeywell Consumer Services
a.m.-500 pm., Central time.
S.M.
Rev.
7-91
aHoneywell
pump
Inc.
1991
without
Form
Number
69-0273-9
THERMOSTAT FEATURES
I-Front
of
thermostat.
HlGH TEMPERATURE
CONTROL LEVER
LOW TEMPERATURE
CONTROL LEVER (BLUE)-
'THERMOSTAT
COVER
Il-Hinged cover lifted.
.. .~
PROGRAM PINS
A
(RED)
THERMOMETER
.
1
1
11.711
,.....
"---
Ill-Cover removed.
24
HOUR
PROGRAM
.
DIAL
CAPTIVE MOUNTING
ANTICIPATOR
HIND
THERMOSTAT.
HELD ON BY TWO
CAPTIVE SCREWS.)
k
((1
"1
PREPARATION
THERMOSTAT
MODEL
CT1500
CT1501
CT1502
CT1503
aThermostat must be mounted on wallplate
0
Assemble tools required, as illustrated
MASKING TAPE.
LABELWIRESASTHEYARE
0
OISCONNECTED
THERMOSTAT
SUBBASE OR
WALLPLATE INCLUDED FOR USE WITH
199986C Wallplate
Q682A1079 Subbase
Q682B1227 Subbase
199986D Wailp ate
IF
NEEDED
TO
FROM
OLD
2-wire, 15 to 30 volt control circuit For gas or oil
heating system.
4- or 5-wire, 15 to 30 volt control circuit For gas
oil heating/cooling system.
15
4-wire,
heat pump or central electric heatinglcooling
systems that require the thermostat to control the
fan in heatino.
[
750
or
subbase included in package to assure operation.
to 30 volt control circuit. For single stage
mill
volt single-stage heating system.
or
If
wallplate or subbase is mounted on a vertical
outlet box (check old installation), order
196393A Cover Plate and Adapter Ring (see appro-
priate figure under step 4). Call Honeywell
Consumer Services
information, Monday-Friday, 7:30 a.m. to
Central time.
Test to make certain that your heating and
cooling systems are working.
(1
-800-468-1
502)
for ordering
If
500
p.m.
either one
does not work, contact your local heatingfair
conditioning dealer.
NOTE:
Do
not operate cooling system
temperature
Turn off power to the heatingfcooling System
at the main fuse panel.
is
below
50'
F
[loo
C].
if
outdoor
F
i2
0
Remove and discard shipping wrap. Save
package of screws, instructions and receipt
0
Remove thermostat cover by lifting up from
the bottom.
Carefully remove insert protecting switch
0
bulbs.
Loosen
0
separate wallplate or subbase from back of
thermostat base.
two
captive mounting screws, and
UNPACK THERMOSTAT
2
SCREWS
THERMOIIAT
12.612
..
IFT
OVER
F
0
“3
REMOVE
OLD
THERMOSTAT
Remove cover of old thermostat.
0
doesn’t snap
bottom, check for a screw that locks the 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 herellof that anticipator setting for
future reference.
heat anticipator, do not be concerned. Move on to
next paragraph.
Loosen screws holding thermostat to wallplate,
subbase or wall and lift away.
off
when pulled firmly from the
If
your thermostat does not have a
If
the cover
Disconnect wires from old thermostat wall-
plate or subbase. Tape each wire and label
with the letter
reconnection easier.
labeling is not necessary.
thermostat cannot be used on your system.
EXCEPTION: The CT1502 thermostat can be
used
One
or
two extra wires?
If
you are replacing a Honeywell Chronotherm
thermostat, you may find one
the clock terminals on the Chronotherm thermostat
wiring wallplate.
may damage your transformer. Disconnect the
wires, and wrap them separately, using electrical
Do
tape.
where they will not interfere with the operation of
the new thermostat. Record the colors and terminal
designation labels of the rest of the wires.
3
of
the terminal designation to make
If
there are only two wires,
IMPORTANT
on
a system with B or 0 terminals.
or
two
Do
not allow them to touch, or you
not
wrap
them together. Place the wires
wires that go to
69-0273-9
~
b
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
..
MOUNT WALLPLATE
sub-
OR
base will be level. Drill
tap anchors into holes until flush with the wall.
Position wallplate or subbase as shown in
appropriate figure, and loosely insert the
screws supplied.
SUBBASE
3/16
in. holes and gently
4
n
Carefully level the wallplate
u
tighten screws.
or
subbase and firmly
SPIRIT LEVEL
..
‘‘wm
WALLPLATE
SCREWS
“2)
5
69-0273-9
WIRE WALLPLATE OR SUBBASE
MOTE:
All
wiring must comply with local electrical
codes and ordinances.
Refer to illustration and strip thermostat wire
0.
:
insulation as necessary.
F"rn
~STFldilRUT
. -.
. - . .
..
CONNECTION-
. .
For
CT1500
0
heating-only
,
FOR
WRAPAROUND
CONNECTIONSTRlP7116In.
-
BARRIER
[11
mml
II
A
POWER
SUPPLY.
PROVIDE
OVERLOAD
Connect either wire to R terminal and the
other wire to
screws.
Push excess wire back into wall, and plug
0
hole In wall with nonflammable Insulation to
prevent drafts from affecting thermostat operation.
6
PROTECTION
DISCONNECT
AS
REOUIRED.
W
terminal. Firmly tighten
MEANS
AND
Wlll
For
CT1501
heating/cooling
Connect the wires to matching terminals
the subbase.
5-WIRE SYSTEM
I
on
4-WIRE SYSTEM
U U
I I
I I
RELAY
OR
VALVE
COIL
I I
1
POWER SUPPLY.
NOTE:
If
marked
to
wire
there are four wires, connect wire
R
connect to RC.
nected, the air conditioner will
4-wire drawing
RC to
RH.
where if connects to the terminals. Firmly tighten
screws.
PROVIDE
to terminal
on
this page shows how to jumper
Strip the insulation off the wire
CONTACTOR
DISCONNECT
RH
If
MEANS
and add a jumper
RC is left uncon-
not
turn
AND
on.
I
M2&13
The
designations
7
A
POWER
SUPPLY.
PROVIDE
OVERLOAD
A
INSTALL
If
the labels do not agree with the terminal
Refer
PROTECTION
JUMPER
on
your new subbase
to
Table
2
on
AS
BETWEEN
page
DISCONNECT
REOUIRED.
RC
8
AND
MEANSAND
RH.
Ma"
Determine correct hookup from the listed
control function and the equipment control
circuit
69-0273-9
~
~
OLDSUBBASE
TERMINAL
R
or RH
RC
W
Y
G
B
0
P
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
CENTRAL ELECTRIC SYSTEM
heatinglcooling
I-
I1
II
U
Push excess wire back into wall. and plug
hole in wall with nonflammable insulation to
prevent drafts from affecting thermostat operation.
8
CONTACTOR
A
POWER
SUPPLY.
OVERLOAD PROTECTION
PROVIDE
RELAY
VALVE
DISCONNECT
AS
REOUIRED.
OR
COIL
MEANSAND
M%1*
CT1502,
continued
SINGLE STAGE HEAT
(WITHOUT AUXILIARY HEAT)
I-
PUMP
SYSTEM
-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
prevent drafts from affecting thermostat operation.
to
L'
+
(HOT)
u+
A
POWER SUPPLY PROVIDE DISCONNECT
OVERLOPD
A
IFCOMPRESSOR
"YTERMINAL WITH A JUMPERTO"W, USE NEW THERMOSTATS
"PTERMINAL FORCOMPRESSOR. IFOLOTHERMOSTATHAS
ONE WIRETO"Y"AND0NE TO
THERMOSTAT,
THERMOSTAT USES
TERMINAL, THIS THERMOSTAT MAY NOT BE USED THIS
THERMOSTAT
A
SOMEHEATPUMPSUSE"B"INSTEAD0F"O'
PROTECTION AS REQUIRED
ISCONNECTEDTO OLDTHERMOSTATS
DO NOT
IS
NOT DESIGNED
"W.
USE"P.
A
W2 (AUXILIARY
MEANS
USt'Y
AND
IMPORTaNT-
OR
EMERGENCY HEAT)
TO
CONTROL
AND
"W'ON
IF
OLD
AUXILIARY
NEW
HEAT
M211511
Connect the wires to matching terminals on
0
the subbase. Firmly tighten screws.
Push excess wire back into wall, and plug
0
hole
in wall with nonflammable insulation to
prevent drafts from affecting thermostat operation.
0
/
M24IB
9
0
1
CQZOOA
OR
0313A
THERMOPILE
69-0273-9
-
L
MOUNT THE THERMOSTAT
or subbase as shown in illustration.
10
Do
NOT
completed.
cycle heating system until Step 7 is
SET HEAT ANTICIPATOR LEVER
-
NOTE: Not applicable
The thermostat's adjustable heat anticipator
0
must be correctly set
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
you wrote in the
to find the current draw for Step
can be found printed on
furnace or boiler. The primary control is usually
box
on
CT1503 millivolt model.
to
accurately control
is
in
Step
3
the
primary control at the
the number
If
you were unable
3,
this information
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
follows:
Coqnect the probes of an ac ammeter
2.0
A,
W
terminals
Let the system operate through the ammeter
a
for at least one minute before taklng reading.
Record the reading here
is
still unavailable, proceed as
for example) between
on
the wallplate
R
(or
or
subbase.
RH)
(0
and
to
On the
stats, move the heat anticipator indicator to
match the number you recorded in Step
found
as recorded
CT1500. CT1501
on
the primary control as shown above, or
in
Step
7
or
CT1502
thermo-
4
or
INSTALL
TIMER
F
0
“8
BATTERIES
\ANTICIPATOR
SETTING
LEVER
11,7164\
teries in thermostat
when batteries are dead, replace with two new
AAA
alkaline batteries. Other types
are more likely to leak, which could damage the
timer. The thermostat itself will operate without
batteries, but will
12
as
shown. Once a year, or
not
operate as a fuel saver.
of
batteries
SET
Adjust the timer by moving the knob in
0
clockwise direction.
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
TIMER
Do
the program dial.
NOT
13
69-0273-9
I-
0
“10
Make sure the packing inserts in the thermo-
0
stat base have been removed.
in step
3
Place the two tabs
0
into mounting
Swing cover downward until it engages
0
catch
at
bottom
slots
of
on
upper edge
in
thermostat base
base
as
ATTACH
explained
of
cover
THERMOSTAT COVER
..
14
CHECK OUT THERMOSTAT
OPERATION AND SET
TEMPERATURE CONTROL
b
cn
il
The two levers on top of the thermostat
control the
energy savings and comfort control, as shown in
illustration.
Do
NOT
check operation by shorting across terminals
thermostat heat anticipator, which will void the warranty.
1
low
and high temperature for
LEVERS
of
LOW
SET
LEVER
relay
TEMP.lBL"E
MARK1
or
valve coil; this will burn out the
1
I
15
~
69-0273-9
Heating-only System
0
Turn on power to the furnace.
0
Push both temperaturecontrol leverstogetherat
least
5"
F
[3" C] above room temperature. The
heat should comeon.Thefan will startwhen the
furnace heats
0
Move both levers5"
ature. The heat should shut
0
Operate the entire heating system for at least
one complete cycle.
If
thermostat fails any test, refer to trouble-
shooting guide in owner's manual.
up.
F
[3"
IMPORTANT
C] below room temper-
off.
Heating /Cooling System
0
Turn on power to the furnace and cooling
system.
0
Place the system switch lever at HEAT and the
fan switch lever at AUTO.
0
Push both temperaturecontrol leverstogetherat
5'F
least
heat should comeon.Thefan will startwhen the
furnace heats up. On the CT1502, the fan will
start immediately.
0
Moveboth
temperature. The heat should shut
will stop when the furnace cools.
[3"C] above room temperature. The
leverstogether5"F[3"C]belowroom
off.
The fan
IMPORTANT
the cooling system if outdoor temperature is
below
50°F
recommendations.
0
Place the system switch lever at COOL and the
fan switch lever at AUTO.
0
Push both temperature control levers together at
least
cooling equipment should operate, and the fan
will start. Allow for any time delay that may be
built into the compressor control circuit.
0
Movebothleverstogether5°F[30C]aboveroom
temperature. The cooling equipment should shut
off.
0
Place the fan switch at
continuously with the system switch in any
position.
0
Place the system switch at
temperature: levers to various positions. The
heating andcooling systems should not operate.
0
Operate the entire system for at least one
complete cycle with the system switch at COOL
and one complete cycle with the switch at HEAT.
If
thermostat fails any test, refer to trouble-
shooting guide in owner's manual.
[lO°C]. Refer to manufacturer's
5O
F
[3" C] below room temperature. The
ON.
The fan should run
OFF.
IMPORTANT
Move both
0
After checkout, reset both temperature levers to
desired temperatures.
For
heating season:
[?
Move the blue lever to the energy savings
temperature you want when you are sleeping or
your home is not occupied.
0
Setthered levertothetemperature you want for
normal comfort periods.
For
cooling season:
0
Move the red lever to the energy savings
you
temperature you want when
your home is not occupied.
are sleeping or
0
Setthebluelevertothetemperature you wantfor
normal comfort periods.
TO
THE
REFER
0333FOR
INSTRUCTIONS.
IF
YOU HAVE OUESTIONS REGARDING THE
INSTALLATION OF THE HONEYWELL FUEL
SAVER THERMOSTAT, PLEASE CALL OUR TOLLFREE CONSUMER SERVICES GROUP NUMBER
AT
1-800-468-1502,
5:OO
PM CENTRALTIME.
OWNERS MANUAL FORM
OPERATING AND PROGRAMMING
MONDAY-FRIDAY, 7:30 AM
69-
-
17
69-0273-9
Honeywell
Residential and
Building Controls Division
Honeywell
1985 Douglas
Golden Valley,
Inc.
Drive
MN
No.
55422
Residential and
Building Controls Division
Honeywell Limited-Honeywell
740
Ellesmere
Scarborough,
M1P
2VY
Road
Ontario
Lunltke
Helping
You
Conlrol
Your
World
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