Honeywell TH3110D, TN3210D Owner's Manual

This martua| covers the following modets:
TH3110D: For 1 Heat/1 Cool systems

TN3210D: For 2 Heat/1 Cool heat pump systems only
(Pull thermostat from wallplate and turn over to find model number.)

CAUTION: EQUIPMENT DAMAGE HAZARD,

To prevent possible compressor damage, do not operate cooling system when outdoor
temperature is below 50°F (10°C).

For assistance with this product please Visithttp://yourhemeLhoneyweH.eom

oroa! I Honeywel! Customer Care toil-free at 1_800.468_1502

Read and save these instructions,

® U.S. Registered Tredemark. Patents pending.

Copyright ® 2006 Honeywell International Inc. All rights reserved.

PRO TH3110D / TH3210D

About your new thermostat

Thermostat features ................................... 2

Quick reference to controls ....................... 3

Quick reference to display ........................ 4

Thermostat Operation

System switch (Heat/Cool) ........................ 5

Fan switch (Auto/On) ................................. 6

Temperature controls ................................. 7

Compressor protection .............................. 8

Appendices

Battery replacement .................................. 9

In case of difficulty ................................... 10

Customer assistance ............................... 12

Accessories .............................................. 12

5-year limited warranty ............................ 13

Operating Manual

!

Your new Honeywell thermostat has been designed to give you many years of reliable
service and easy-to-use, push-button climate control.

Features

• Large, clear, bacMit display is easy to read, even in the dark.
Displays both room temperature and temperature setting.
Built-in compressor protection.

PRO TH3110D / TH3210D

- i

Digita| display screen Temperature adjustment

page 7)

Fan Switch (see page 6)
On: Fan runs continuously.
Auto: Fan runs only when heating or
cooling system is on,

System switch (see page 5)

o Cool: Cooling system control.

• Off; All systems off,

• Heat: Heating system control,

• IEm Heat = Emergency & Auxiliary

Heat control. Compressor is locked

out, (Select models only,)

Operating Manual

Current inside temperature Temperature setting

Low battery warning
(see page 9)

System Status

• Cool On: Cooling system is on.

• Heat On: Heating system is on.

• Ern: Emergency heat is on. **

• Aux: Auxiliary heat is on. **

** Only for heat pumps with this capability

(select models only).

4

tf "Heat On" or "Cool
On" is flashing, com-
pressor protection is

engaged (see page 8).