Pro 1 IAQ T721 User manual

This manual covers the following models:

• T721

INSTALLATION MANUAL

A trained, experienced technician

must install this product.

Carefully read these instructions. You

could damage this product or cause a

hazardous condition if you fail to follow

these instructions.

Need Help?

For assistance with this product please visit

http://www.pro1iaq.com or call Pro1

Customer Care toll-free at 888-Pro1iaq

(776-1427) during normal business hours

(Mon-Fri 9 AM - 6 PM Eastern)

Installation Tips

Thermostat Quick Reference

Subbase Installation

Wiring

Technician Setup

Technician Setup Menu

Mounting and Battery Installation

Set Time

Specifications and Contact

® U.S. Registered Trademark. Patents pending.

Table of Contents

Thermostat Applications Guide

Page

Battery Power

Hardwire (Common Wire)

Hardwire (Common Wire) with Battery Backup

Power Type

noitpircseD

Gas or Oil Heat

Electric Furnace

Heat Pump (No Aux. or Emergency Heat)

Heat Pump (with Aux. or Emergency Heat)

Multi-stage Systems

Heat Only Systems

Heat Only Systems - Floor or Wall Furnaces

Cool Only Systems

Millivolt

Yes

Rev. 0850

Una versión española de este

manual puede ser descargada

en www.pro1iaq.com

INSTALLATION TIPS

The thermostat should be installed approximately 4 to 5 feet above the floor.

Select an area with average temperature and good air circulation.

Do not install thermostat in locations:

• Close to hot or cold air ducts

• That are in direct sunlight

• With an outside wall behind the thermostat

• In areas that do not require conditioning

• Where there are dead spots or drafts (in corners or behind doors)

• Where there might be concealed chimneys or pipes

Pick an installation location that is easy for the user to access. The temperature of the location

should be representative of the building.

Wall locations

PRO1 Tip

NO NO YES

Important:

The low battery indicator is displayed

when the AA battery power is low. If

the user fails to replace the battery

within 21 days, the thermostat

display will only show the low battery

indicator as a final warning before the

thermostat becomes inoperable.

Getting to know your thermostat

LCD

Fan Switch

System Switch

Easy Change Battery Door

Setpoint Buttons

User Buttons

Displays the user

selectable setpoint

temperature.

System operation

indicators: The COOL,

HEAT or FAN icon will

display when the COOL,

HEAT or FAN is on.

NOTE: The compressor

delay feature is active if

these icons are flashing.

The compressor will not

turn on until the 5 minute

delay has elapsed.

Days of the

week and time

Button

options

Glow in the Dark Light Button

3 4

Low Battery Indicator:

Replace batteries when

indicator is shown.

+1 will appear in the

display when the auxiliary

heat is active.

Indicates the current

room temperature.

SUBBASE INSTALLATION

Caution:

Electrical Hazard

Failure to disconnect the

power before beginning to

install this product can cause

electrical shock or equipment

damage.

Mercury Notice:

All of Pro1’s products are

mercury free. However, if the

product you are replacing

contains mercury, dispose of it

properly. Your local waste

management authority can give

you instructions on recycling

and proper disposal.

Horizontal mount

Vertical mount

For vertical mount put

one screw top and one

screw bottom.

For horizontal mount put

one screw left and one

screw right.

WIRING

Caution: Electrical Hazard

Failure to disconnect the power

before beginning to install this

product can cause electrical

shock or equipment damage.

Warning:

All components of the control

system and the thermostat

installation must conform to

Class II circuits per the NEC Code.

Wiring

If you are replacing a thermostat, make

note of the terminal connections on the

thermostat that is being replaced. In some

cases the wiring connections will not be

color coded. For example, the green wire

may not be connected to the Gterminal.

Loosen the terminal block screws. Insert

wires then retighten terminal block screws.

Place nonflammable insulation into wall

opening to prevent drafts.

Note: This cross reference represents typical systems and is not necessarily representative of your particular

application. Always consult the original equipment manufacturer for proper installation instructions.

TECHNICIAN SETUP

Fahrenheit/Celsius Display

12 or 24 Hour Time

Terminal Designations

Auxiliary heat relay - Stage 2

Compressor relay - Stage 1

Fan relay

Heat pump changeover valve

energized in cooling

Transformer power

Common wire from

system transformer

Heat pump changeover valve

energized in heating

Emergency heat relay

Select For Cwith the jumper pin on the

back of the thermostat. Fis for

Fahrenheit and Cis for Celsius.

12 or 24 hour (military time) can be

selected with the jumper pin.

Important:

The RESET button must be

pressed after changing any

switch or jumper pin

setting. Batteries must be

installed for this operation.

12 or 24 hour

jumper pin

Select For C

with the jumper pin

Reset button

Note:

In many systems with no emergency heat relay

a jumper can be installed between E and W2.

TECHNICIAN SETUP MENU

The second stage will turn on at 2x the swing setting. The second stage will turn off when 1x the swing is

reached. For example, if the swing setting is .8 degrees for heating and the thermostat is set at 70ºF, the

first stage will turn on at approximately 69.2ºF. The second stage will turn on at 68.4ºF. The second stage

will turn off at 69.2ºF and the first will turn off at 70.8ºF.

PRO1 Tip

Technician Setup Menu

This thermostat has a technician setup menu

for easy installer configuration. To setup the

thermostat for your particular application:

Configure the installer options as

desired using the table below.

Use the or keys to

change settings and the NEXT STEP

or PREV STEP key to move from one

option to another. Note: Only press

DONE key when you want to exit the

Technician Setup options.

Press MENU button

Press and hold TECH SET button for 3

seconds. This 3 second delay is

designed so that homeowners do not

accidentally access the installer settings.

This feature will

flash “FILT” in the

display after the

elapsed run time

to remind the

user to change the

filter. A setting of

“off” will disable

this feature.

This feature allows

the installer to

change the

calibration of the

room temperature

display. For

example, if the

thermostat reads 70°

and you would like it

to read 72° then

select +2.

The compressor short

cycle delay protects

the compressor from

“short cycling”. This

feature will not allow

the compressor to be

turned on for 5

minutes after it was

last turned off.

The swing setting,

often called “cycle

rate”, “differential”

or “anticipation” is

adjustable. A smaller

swing setting will

cause more frequent

cycles and a larger

swing setting will

cause fewer cycles.

The swing setting,

often called “cycle

rate”, “differential”

or “anticipation” is

adjustable. A

smaller swing setting

will cause more

frequent cycles and a

larger swing setting

will cause fewer

cycles.

When on, this

feature turns off

the Y terminal 45

seconds after the

second stage of

heat turns on.

The heating swing

setting is adjustable

from ±0.4°F to

±2°F. For example:

A swing setting of

0.5°F will turn the

heating on at

approximately 0.5°F

below the setpoint

and turn the heating

off at approximately

0.5°F above the

setpoint.

Selectable on or off.

This option should be

“ON” for “DUAL

FUEL” applications

that use a gas

furnace for auxiliary

heat.

The cooling swing

setting is adjustable

from ±0.4°F to

±2°F. For example:

A swing setting of

0.5°F will turn the

cooling on at

approximately 0.5°F

above the setpoint

and turn the cooling

off at approximately

0.5°F below the

setpoint.

Selecting “ON” will

not allow the

compressor to be

turned on for 5

minutes after the last

time the compressor

was on. Select “off”

to remove this delay.

You can select the

minimum compressor

run time from “off”,

“3”, “4”, or “5”

minutes. If 3, 4, or 5

is selected, the

compressor will run

for at least the

selected time before

turning off.

You can adjust the

room temperature

display to ready -4°F

to +4°F above or

below the factory

calibrated reading.

You can adjust

the filter change

reminder from

“off” to 2000

hours of runtime

in 50 hour

increments.

Off 0 ºF Off On 0.8 ºF 0.8 ºF Off

This feature allows the

installer to select the

minimum run time for

the compressor.

For example, a setting

of 4 will force the

compressor to run for

at least 4 minutes

every time the

compressor turns on,

regardless of the room

temperature.

Tech Setup Steps

Minimum

Compressor

On Time

Compressor

Short Cycle

Delay

Cooling

Swing

Heating

Swing

Gas Auxiliary

for Heat Pump

Room

Temperature

Calibration

Filter

Change

Reminder

LCD Will Show

Adjustment Options

Factory Default Settings

MOUNT THERMOSTAT & BATTERY INSTALLATION

Mount Thermostat

Align the 4 tabs on the subbase with

corresponding slots on the back of the

thermostat, then push gently until the

thermostat snaps in place.

SET TIME

Set Time

Follow the steps below to set the day of the week and current time:

Press MENU

Press SET TIME

Day of the week will be flashing. Use the or key to select the current

day of the week.

Press NEXT STEP

The current hour is flashing. Use the or key to select the current hour.

When using 12-hour time, make sure the correct a.m. or p.m. choice is selected.

Press NEXT STEP

Minutes are now flashing. Use the or key to select current minutes.

Press DONE when completed

SPECIFICATIONS & CONTACT INFORMATION

Specifications

The display range of temperature

The control range of temperature

Load rating

Display accuracy

Swing (cycle rate or differential)

Power source

Operating ambient

Operating humidity

Dimensions of thermostat

41ºF to 95ºF (5ºC to 35ºC)

44ºF to 90ºF (7ºC to 32ºC)

1 amp per terminal, 1.5 amp maximum all terminals combined

± 1ºF

Heating is adjustable from 0.4ºF to 2.0ºF

Cooling is adjustable from 0.4ºF to 2.0ºF

18 to 30 VAC, NEC Class II, 50/60 Hz for hardwire (common wire)

Battery power from 2 AA Alkaline Energizer batteries

32º to +105º (0º to +41ºC)

90% non-condensing maximum

4.7”W x 4.4”H x 1.1”D

Pro1 IAQ Inc.

1111 S. Glenstone

Suite 2-100

Springeld, MO 65804

Toll-free: 1-888-Pro1iaq (776-1427)

Toll Number (Outside the USA): 330-821-3600

Web: http://www.pro1iaq.com

Hours of Operation: Monday - Friday 9 AM - 6 PM Eastern

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