Honeywell T822 Series Owners Manual

Owner’s Manual

69-1945EFS-04

English: Page 1

Mode d’emploi

Français : Page 6

Manual de Uso

Español: Página 11

T822 Series

Thermostat

This manual covers the following models*:

T822K,L • T827K

* Images are for reference only and may not represent the actual thermostat.

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.

® U.S. Registered Trademark. Patents pending.

Copyright © 2007 Honeywell International Inc.

All rights reserved.

T822 Series • Owner's Manual

Product application

This thermostat provides control of:

• 24 Vac heating systems (T822)

• 750 mV or 12 Vdc heating systems (T827K)

• 24 Vac cooling systems (T822L)

System Types

• Gas or oil

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

• Normally closed hot water valves (T822K)

• 2-wire cooling systems (T822L)

• Normally open hot water valves (T822L)

System Settings

• Heat, Off (select models only)

Specifications

Temperature Control Range

• 50° to 90°F (10° to 32°C)

Operating Ambient Temperature

• 0° to 120°F (-18° to 49°C)

Operating Relative Humidity

• 5% to 90% (non-condensing)

Dimensions (vertical model)

• 2.88W x 4.75H x 1.5D (inches)

• 73W x 121H x 38D (mm)

Dimensions (horizontal model)

• 4.75W x 2.88H x 1.5D (inches)

• 121W x73H x 38D (mm)

Electrical Ratings

Terminal Voltage (50/60Hz) Running Current

W1 Heating 20-30 Vac 0.02-1.2 A

(Powerpile) 750 mVdc 100 mAdc
(DC Powered) 12 Vdc .55 A

Y2 Cooling 20-30 Vac 0.02-1.2 A

(Normally open hot water valve.) 20-30 Vac 0.02-1.2 A

1

T822K and T827K

2

T822L

69-1945EFS—04 2

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M23791

M24695

Base installation

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

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

3. Pull wires through base, posi­tion over anchors, and insert
screws. Check level if desired,
then tighten screws.

Wiring

1. Loosen screw terminals, insert bare wires

beneath screws, then re-tighten screws.

2. Push any excess wire back into the wall

opening

3. Plug the wall opening with nonflammable

insulation to prevent drafts from affecting
thermostat operation.

Terminal Designations

R Heating power. Connect to secondary

side of heating system transformer.

W1 Heat relay.
Y2 Cool relay, or

normally open hot water valve.

1

T822K and T827K

2

T822L

Wire specifications

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

3 69-1945EFS—04

T822 Series • Owner's Manual

M23796

M23795

Set heat anticipator (model T822K only)

Move the adjustment arrow to the
proper setting for your system
(see table below).

Your system Setting

Steam 1.2
Hot water heat 0.8

Warm air (high efciency) 0.8

Warm air (standard) 0.4
Electric heat 0.3

Thermostat mounting

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

Tab

69-1945EFS—04 4

Operation

M24696

English: Page 1 • Français : Page 6 • Español: Página 11

Temperature setting

Adjust to set desired indoor temperature.

System switch (select models)

• Heat: Controls the heating system.

• Off: All systems are off.

5-year limited warranty

Honeywell warrants this product to be free from defects in
the workmanship or materials, under normal use and service,

for a period of ve (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 pur-

chase, 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

5 69-1945EFS—04

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 specic legal rights, and you may

have other rights which vary from state to state.

If you have warranty questions, 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, Toronto, Ontario M1V4Z9.