Honeywell Home The Round CT87N, The Round CT87K Owner's Manual
Owner’s Manual
M37778
69-1959EFS-04
English: Page 1
Mode d’emploi
Français : Page 6
Manual de Uso
Español: Página 11
CT87N/CT87K
The Round
CT87K (24 Vac heating systems) • CT87N (24 Vac heating and cooling systems)
Getting started
®
Check package contents:
• Thermostat
• Coverplate
• Wall anchors & screws (2 each)
• Wire labels
This thermostat contains a Lithium battery which
may contain Perchlorate material.
Perchlorate Material—special handling may apply,
See www.dtsc.ca.gov/hazardouswaste/perchlorate
Remove your old thermostat
1. CAUTION TURN OFF POWER to system at the furnace, or at the fuse/circuit
breaker panel before you begin.
2. Remove cover and thermostat, but leave wallplate with wires attached.
Leave wallplate in place.
Old thermostat
® U.S . Registered Trademark. U. S. Patents 7,159 ,789;
7,159,79 0; 7,476, 988 and other patents pending.
Copyright © 2019, Resideo Technologies, Inc .
All rights reserved.
Cover
Before you begin, make sure
you have:
• No. 2 Phillips & small pocket
screwdrivers
• Hammer
• Level (optional)
• Pencil
• Drill and bit (3/16” for drywall, 7/32”
for plaster)
Is there a sealed tube containing
mercury? If so, see mercury notice
below.
MERCURY NOTICE
If your old thermostat contains
mercury, contact your local waste
management authority for proper
disposal instructions.
The Round
®
CT87N/CT87K • Owner's Manual
Label wires and remove old wallplate
Use a screwdriver to disconnect wires one by one. As you disconnect each wire, wrap it with
the label matching the letter on your old thermostat. (Adhesive labels are supplied in your
thermostat package.)
Remove the old wallplate only after all wires are labeled. Be careful not to let loose wires fall
into the wall opening.
Wrap supplied labels securely around each wire. Do not let wires fall into wall opening!
CT87N
IGNORE WIRE COLORS: Use only letter designations
to identify wire types.
For CT87N: If your old thermostat
has 7 or more wires (not counting
terminals C or C1), you may have
purchased the wrong replacement
thermostat. Stop now and call
18004681502 for advice.
Mark mounting position
CT87N CT87K
CT87K
For CT87K: If your old thermostat
has 4 or more wires (not counting
terminals C or C1), you may have
purchased the wrong replacement
thermostat. Stop now and call
18004681502 for advice.
1. Pull wires
through base.
2. Level base if
desired.
3. Mark positions
of both screw
holes.
69-1959EFS—04 2
R
W
Y
Mount thermostat base
1. Drill holes at pencil-marked
locations (3/16” for drywall,
7/32” for plaster).
2. Use hammer to tap anchors
into holes until flush with
wall.
3. [Optional] Pull wires through
cover plate (if needed to cover
marks left by the old thermostat).
4. Pull wires through thermostat
base, position over anchors,
then insert mounting screws.
Check level if desired, then
tighten screws.
Connect wires
English: Page 1 • Français : Page 6 • Español: Página 11
Thermostat
base
Cover plate
(optional)
1. Match each labeled wire with same
letter on the terminal block(s).
2. Use a screwdriver to loosen screw
terminals, insert bare wire into
slots, then tighten screws.
3. Push any excess wire back into the
wall opening.
Labels don't match?
If labels do not match letters on
thermostat, see table below.
Existing wires Connect to:
R • RH • 5 • V Terminal “R” [1]
Rc Terminal “Rc” [1]
O Terminal “O” [2]
B Terminal “B” [2]
G • F Terminal “G”
W • W1 • H Terminal “W” *
Y • Y1 • M Terminal “Y” *
C • X Do not use [3]
* For heat pump systems, add a jumper
wire from the Y to the W terminals.
There should not be a wire from the
wall to the W terminal.
Electrical Ratings
• Voltage (50/60 Hz): 20 - 30 VAC
• Running current: 0.02 - 1.0 A
CT87N
Wiring CT87N
[1] If wires will be connected to both R and Rc
terminals, remove the metal jumper.
[2] Do not connect both O and B if you have a
heat pump. Connect only the O wire. Wrap B
wire with electrical tape and do not use.*
[3] Do not use C or X. Wrap bare end of wire
with electrical tape.
CT87K
R
W
Y
Wiring CT87K
• 2-wire heat-only system: Connect one
wire to R terminal, one wire to W terminal.
• 3-wire hot water heat-only system: Connect
wires R to R, W to W, and Y to Y terminals.
Alternate wiring: 5 to R, 4 to W, and 6 to Y
terminals.
3 69-1959EFS—04
CT87N/CT87K • Owner's Manual
Set fan operation switch (CT87N)
Move the switch to the proper setting for your
system:
F: For gas or oil heating systems, leave the
fan operation switch in this factory-set
position (for systems that control the fan in a
call for heat).
E: Change the switch to this setting for heat
pump or electric heat systems. (This setting
is for systems that allow the thermostat to
control the fan in a call for heat, if a fan wire is
connected to the G terminal.)
Set cycle rate switches
Heating System Switch 1 Switch 2
Steam or gravity On On
High efficiency warm air Off On
(90% plus efficiency),
hot water, or heat pump
Gas or oil warm air Off Off
(factory setting)
Electric warm air On Off
E
F
Move the cycle rate switches
to the proper setting for your
system (see table below).
Finish installation
Base
Coverplate
(optional)
Thermostat
69-1959EFS—04 4
1. Align the slots on the base with tabs on
the thermostat, then push gently until the
thermostat snaps into place.
2. Restore electrical power at the heating/
cooling system, or at the fuse/circuitbreaker panel.
M37778
Operation
English: Page 1 • Français : Page 6 • Español: Página 11
System switch (CT87N)
• Cool: Controls the cooling system.
• Heat: Controls the heating system.
• Off: All systems are off.
Temperature
Desired indoor
temperature.
Current indoor
temperature.
CAUTION: EQUIPMENT DAMAGE HAZARD (CT87N)
Do not operate cooling system when outdoor temperature is below 50°F (10°C).
Fan switch (CT87N)
• On: Fan runs continuously.
• Auto: Fan runs only when heating
or cooling system is on.
Temperature setting
Rotate to set desired indoor
temperature.
1-year limited warranty
Resideo warrants this product to be free from defects in
workmanship or materials, under normal use and service,
for a period of one (1) year from the date of first purchase
by the original purchaser. If at any time during the warranty
period the product is determined to be defective due to
workmanship or materials, Resideo shall repair or replace it
(at Resideo’s option).
If the product is defective,
(i) return it, with a bill of sale or other dated proof of
purchase, to the place from which you purchased it; or
(ii) call Resideo Customer Care at 1-800-468-1502.
Customer Care will make the determination whether the
product should be returned to the following address: Resideo
Return Goods, 1985 Douglas Dr. N., Golden Valley, MN
55422, or whether a replacement product can be sent to you.
This warranty does not cover removal or reinstallation costs.
This warranty shall not apply if it is shown by Resideo that
the defect was caused by damage which occurred while the
product was in the possession of a consumer.
Resideo’s sole responsibility shall be to repair or replace the
product within the terms stated above. RESIDEO SHALL
NOT BE LIABLE FOR ANY LOSS OR DAMAGE OF ANY
KIND, INCLUDING ANY INCIDENTAL OR CONSEQUENTIAL
5 69-1959EFS—04
DAMAGES RESULTING, DIRECTLY OR INDIRECTLY, FROM
ANY BREACH OF ANY WARRANTY, EXPRESS OR IMPLIED,
OR ANY OTHER FAILURE OF THIS PRODUCT.
Some states do not allow the exclusion or limitation of
incidental or consequential damages, so this limitation may
not apply to you.
THIS WARRANTY IS THE ONLY EXPRESS WARRANTY
RESIDEO MAKES ON THIS PRODUCT. THE DURATION OF
ANY IMPLIED WARRANTIES, INCLUDING THE WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE, IS HEREBY LIMITED TO THE ONE YEAR
DURATION OF THIS WARRANTY. Some states do not allow
limitations on how long an implied warranty lasts, so the
above limitation may not apply to you.
This warranty gives you specific legal rights, and you may
have other rights which vary from state to state. If you have
any questions concerning this warranty, please write Resideo
Customer Care, 1985 Douglas Dr, Golden Valley, MN 55422
or call 1-800-468-1502.
Loading...