Pro1 Technologies T621-2 User manual

Operation ManualOperation Manual

U.S. Registered Trademark. Patents pending

T621-2

Pro1 Technologies

Toll Free : 888-776-1427

Web: www.pro1iaq.com

Hours of Operation: M-F 9AM - 6PM Eastern

Table of Contents

Thermostat Operation

Thermostat Quick Reference

Thermostat Warranty Information

Page

2-3

4-6

Una version en español de este

manual se puede descargar en la

pagina web de la compañia.

Equipment damage hazard.

Do not operate the cooling

system if the outdoor

temperature is below 50 ˚F

(10 ˚C) to prevent possible

compressor damage.

Caution

Rev. 1814

P.O. Box 3377

Springeld, MO 65808-3377

Set At

EmHCOOL

OFFH EAT

Thermostat OperationThermostat Operation

LCD

Fan Switch

System Switch

Easy change battery door

Temperature Setpoint Buttons

LCD Display

Fan Switch

System Switch

Temperature Setpoint Buttons

See page 6 for details about

this display read out.

Select ON or AUTO. ON will

run the fan continuously.

AUTO will turn the fan on

only when the heating or

cooling system is on.

Selects the operation mode

on your HVAC system.

Selecting HEAT turns on

the heat mode. Selecting

COOL turns on the air

conditioning mode.

Selecting OFF turns both

heating and cooling o.

Selecting EmH locks out

your compressor and turns

on the secondary heat

mode.

Press the + or - buttons to

select the desired room

temperature.

Note: The compressor

delay is active if “ON”

is ashing. The

compressor will not

turn on until the 5

minute delay has

elapsed.

Easy change battery door

Thermostat Quick Reference

Battery Installation

Thermostat Quick Reference

Insert 2 AA

Alkaline batteries

(included). High

quality alkaline

batteries are

recommended.

Simple

operating

instructions

are found

on the back

of the

battery

door.

Understanding Your Thermostats Staging:

This thermostat controls 2 stages of heating. For reasons of energy

eciency the thermostat will try to maintain your comfort setting

using only 1 stage. If the 2nd stage is necessary it will be used and

you will see +1 in the display.

The low battery icon is displayed when the AA battery power

is low. Whenever the thermostat detects low battery voltage

from the AA batteries, the low battery icon will begin ashing

on the screen for 21 days (if the batteries are not changed).

If the batteries are not changed 22 days after the thermostat

detects low battery voltage, the thermostat screen will only

show the ashing battery icon until buttons are pressed. If the

batteries are not changed 43 days after the thermostat detects

low battery voltage, the thermostat screen will only show the

ashing battery icon until buttons are pressed and the set

points will oset to 85°F/29°C in cooling and 55°F/13°C in

heating. At this stage, set point changes can be made

temporarily but, the set points will change back to defaulted

values after a 4-hour period. The thermostat will continue to

perform this low battery ashing, temperature oset

condition until the internal voltage threshold is reached. When

the thermostat internal voltage threshold is reached, all relays

will be opened and the thermostat will become inoperable

until new batteries are installed.

Important:

Warranty Information

Warranty Registration

Your new thermostat has a 2 year limited warranty. You must register

your thermostat within 60 days of installation. Without this

registration the warranty period will begin on date of manufacture.

For warranty issues please contact the HVAC professional that

installed this product. You can register your new thermostat in 2 ways:

Go to the company website, select warranty registration and

ll out a short registration form.

Complete the form below and mail it to the address shown.

Warranty Registration

Complete form and mail to:

Thermostat Warranty Registration

Thermostat Quick Reference

Online

Mail

Low Battery

Indicator:

Replace batteries

when indicator is

shown.

Displays the

selected setpoint

temperature.

System Operation Indicators:

ON will display when the COOL,

HEAT or Emergency Heat is on.

NOTE: The compressor delay feature is

active if ON is ashing. The compressor will

not turn on until the 5 minute delay has

elapsed.

Indicates the

current room

temperature.

Pro1iaq

P.O. Box 3377

Springeld, MO 65808-3377

Name:

Address:

City:

State:

Zip:

Thermostat Model:

Date Installed:

Stage 1 and 2

indicate the stages

of HEAT that are

active.

www.pro1iaq.com

Cut Out For

Warranty Registration

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