Honeywell Home T87N, T87K Owner's Manual

Owner’s Manual

4

English: Page 1

Mode d’emploi

Français : Page 6

Manual de Uso

Español: Página 11

T87N/ T87K

The Round

This manual covers the following models:

• Heat-only T87K • Heat and Cool T87N

Pre-installation checklist

®

Check package contents:

• Thermostat

• Wall anchors & screws (2 each)

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)

Must be installed by a trained, experienced technician

Read these instructions carefully. Failure to follow these instructions

can damage the product or cause a hazardous condition.

CAUTION: ELECTRICAL HAZARD

Can cause electrical shock or equipment damage. Disconnect power before
beginning installation.

MERCURY NOTICE

If this product is replacing a control that contains mercury in a sealed tube, do not
place the old control in the trash. Contact your local waste management authority for
instructions regarding recycling and proper disposal.

This thermostat contains a Lithium battery which may contain Perchlorate material.
Perchlorate Material—special handling may apply,
See www.dtsc.ca.gov/hazardouswaste/perchlorate

69-1958EFS-0

T87N/T87K • Owner's Manual

Product application

This thermostat provides electronic control of:

• 24 VAC heating systems (T87K)

• 24 VAC heating and cooling systems (T87N)

System Types

• Gas or oil heat (T87K)

• Gas, oil, or electric heat with air

conditioning (T87N)

• Warm air, hot water, high-efficiency
furnaces, heat pumps, steam, gravity

• Heat only

• Heat only with fan (T87N)

• Heat only, 2-wire, and 3-wire hot­water valve (power open and close
valves) (T87K)

• Cool only (T87N)

System Settings (T87N)

• Heat, Off, Cool

Installation tips

Install the thermostat about 5 feet (1.5 m) above the floor in an
area with good air circulation at average temperature.

Fan Settings (T87N)

• Auto, On

Specifications

Temperature Range

• 40° to 90°F (4.5° to 32°C)

Shipping Temperature

• 20° to 120°F (28.9° to 48.9°C)

Operating Relative Humidity

• 5% to 90% (non-condensing)

Electrical Ratings

• Voltage: 2030 VAC

• Running current:0.021.0A

NO

NO

Do not install in locations where the thermostat can be affected by:

• Drafts or dead spots behind doors and in corners

• Hot or cold air from ducts

• Sunlight or radiant heat from appliances

• Concealed pipes or chimneys

• Unheated/uncooled areas such as an outside wall behind the thermostat

69-1958EFS—04 2

NO

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Wallplate installation

1. Pull wires through wire
hole. Position wallplate on
wall, level, and mark hole
positions.

2. Drill holes (3/16” for
drywall, 7/32” for plaster)
and tap in supplied wall
anchors.

3. Pull wire through wallplate,
position over anchors, then
insert and tighten mounting
screws. Check level if
desired.

Wiring

1. Loosen screw terminals, insert wires into terminal block, then re-tighten screws.

2. Push excess wire back into the wall opening.

3. Plug the wall opening with nonflammable insulation to prevent drafts from affecting
thermostat operation.

Terminal DesignationsT87N

W Heat relay.
Y Compressor contactor.
G Fan relay.
O Heat pump changeover valve

energized in cooling.

Rc Cooling power. Connect to secondary

side of cooling system transformer.

R Heating power. Connect to secondary

side of heating system transformer.

B Heat pump changeover valve

energized in heating.

NOTES
R & Rc terminals (T87N)

In single-transformer system, leave metal
jumper in place between
metal jumper if two-transformer system.

3 69-1958EFS—04

R & Rc. Remove

Terminal DesignationsT87K

W Heat relay.
R Power. Connect to secondary side of

heating system transformer.

Y This terminal can be used for some

3-wire hot-water valve systems (power
open and close valves).

R

W

Y

Heat pump systems (T87N)

If wiring to a heat pump, use a small piece of
wire (not supplied) to connect terminals W
and Y.

Wire specifications

Use 18-gauge thermostat wire. Shielded
cable is not required.

T87N/T87K • Owner's Manual

Fan operation settings (T87N)

Fan operation settings:
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.)

Cycle rate settings

Heating System Switch 1 Switch 2

Steam or gravity (1 CPH) On On
High efficiency warm air Off On

(90%+), hot water, or
heat pump (3 CPH)

Gas or oil warm air Off Off
(factory setting) (5 CPH)

Electric warm air (9 CPH) On Off

Move the cycle rate switches
to the proper setting for your
system (see table below).

Thermostat mounting

Base

Thermostat

69-1958EFS—04 4

Align the slots on the base with tabs on the
thermostat, then push gently until the
thermostat snaps into place.

Operation

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System switch (T87N)

• Cool: Controls the cooling system.

• Heat: Controls the heating system.

• Off: All systems are off.

Temperature

Desired indoor
temperature.
Current indoor
temperature.

Fan switch (T87N)

• On: Fan runs continuously.

• Auto: Fan runs only when

heating or cooling system is on.

Temperature setting

Rotate to set desired indoor
temperature.

CAUTION: EQUIPMENT DAMAGE HAZARD (T87N)

Do not operate cooling system when outdoor temperature is below 50°F (10°C).

Limited 5-year warranty

Resideo warrants this product, excluding battery, to be free
from defects in workmanship or materials, under normal use
and service, for a period of five (5) years 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, IN
CLUDING ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES

5 69-1958EFS—04

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 MERCHANT
ABILITY AND FITNESS FOR A PARTICULAR PURPOSE, IS
HEREBY LIMITED TO THE FIVE 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.