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T87N Easy-To-SeeTM
The Round®
Owner’s Manual
English: Page 1
Mode d’emploi
Français: Page 6
Manual de Uso
Español: Página 11
Pre-installation checklist
Check package contents:
•Thermostat
•Wall anchors & screws (2 each)
•Owner's Manual
•Braille Card
•Large Print Subbase Switch Labels
•Coverplate
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.
The Round® Easy-To-SeeTM
® U.S. Registered Trademark. Patents pending. Copyright © 2006 Honeywell International Inc.
All rights reserved.
69-1840EFS-1
T87N Easy-To-SeeTM • Owner's Manual
Product application
This thermostat provides electronic control of 24 VAC single-stage heating and cooling systems.
System Types
•Gas, oil, or electric heat with air conditioning
•Warm air, hot water, high-efficiency furnaces, heat pumps, steam, gravity
•Heat only
•Heat only with fan
•Cool only
System Settings
•Heat, Off, Cool
Fan Settings
•Auto, On
Installation tips
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
Install the thermostat about 5 feet (1.5 m) above the floor in an area with good air circulation at average temperature.
NO |
NO |
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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
English: Page 1 • Français: Page 6 • Español: Página 11
Subbase and base installation
1.Pull wires through wire hole. Position coverplate
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 coverplate and subbase, position over anchors, then insert and tighten mounting screws. Check level if desired.
4. Apply the large-print labels
to the coverplate, matching the labels on the subbase.
Coverplate
Large-print subbase switch labels
Subbase
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
W Heat relay.
Y Compressor contactor. G Fan relay.
OHeat pump changeover valve energized in cooling.
Rc Cooling power. Connect to secondary side of cooling system transformer.
RHeating power. Connect to secondary side of heating system transformer.
BHeat pump changeover valve energized in heating.
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NOTES
R & Rc terminals
In single-transformer system, leave metal jumper in place between R & Rc. Remove metal jumper if two-transformer system.
Heat pump systems
If wiring to a heat pump, use a small piece of wire (not supplied) to connect terminals W and Y.
Wire specifications
Use 18to 22-gauge thermostat wire. Shielded cable is not required.
T87N Easy-To-SeeTM • Owner's Manual
Fan operation settings
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.)
E
F
Cycle rate settings
Move the cycle rate switches to the proper setting for your system (see table below).
Heating System |
Switch 1 |
Switch 2 |
Steam or gravity (1 CPH) |
On |
On |
High efficiency warm air |
Off |
On |
(90%+), hot water, or |
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heat pump (3 CPH) |
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Gas or oil warm air |
Off |
Off |
(factory setting) (5 CPH) |
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Electric warm air (9 CPH) |
On |
Off |
Thermostat mounting |
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Coverplate |
Align the slots on the base with tabs on the |
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and subbase |
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thermostat snaps into place. |
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Thermostat |
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English: Page 1 • Français: Page 6 • Español: Página 11
Operation
System switch
•Cool: Controls the cooling system.
•Heat: Controls the heating system.
•Off: All systems are off.
Markings
Enlarged, raised numbers indicate temperature range by touch or sight. The large 5, 6, 7
and 8 mean 50, 60, 70 and 80°F, respectively.
CO
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Fan switch
•On: Fan runs continuously.
•Auto: Fan runs only when heating or cooling
system is on.
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Temperature setting
Rotate to set, a click is heard every two degrees as the temperature is adjusted.
Temperature
Current indoor temperature.
CAUTION: EQUIPMENT DAMAGE HAZARD
Do not operate cooling system when outdoor temperature is below 50°F (10°C).
Limited 5-year warranty
Honeywell warrants this product, excluding battery, to be free from defects in the workmanship or materials, under normal use and service, for a period of five (5) years from the date of purchase by the consumer. If at any time during the warranty period the product is determined to be defective or malfunctions, Honeywell shall repair or replace it (at Honeywell'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 Honeywell Customer Care at 1-800-468-1502. Customer Care will make the determination whether the product should be returned to the following address: Honeywell Return Goods, Dock 4 MN10-3860, 1885 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 Honeywell that the defect or malfunction was caused by damage which occurred while the product was in the possession of a consumer.
Honeywell's sole responsibility shall be to repair or replace the product within the terms stated above. HONEYWELL
SHALL NOT BE LIABLE FOR ANY LOSS OR DAMAGE OF ANY KIND, INCLUDING ANY INCIDENTAL OR CONSEQUENTIAL 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 HONEYWELL 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 FIVEYEAR 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 Honeywell Customer Relations, 1985 Douglas Dr., Golden Valley, MN 55422 or call 1-800-468-1502. In Canada, write Retail Products ON15-02H, Honeywell Limited/ Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9.
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