Honeywell TrueIAQ User Manual

Owner’s Guide

TrueIAQ

Digital IAQ Control

®

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Table of contents

User Information

About TrueIAQ® .............................. 1

Operation .................................... 2

Display screen reference ........... 3

Adjusting IAQ settings

Changing humidifier settings ..... 4

Changing dehumidifier settings ... 6

Changing ventilation settings ...... 6

Changing time of day ................. 7

Service timers ............................. 7

Need Help?

For assistance with this product please visit http://yourhome.honeywell.com

or call Honeywell Customer Care toll-free at 1-800-468-1502

Installer Information

Installation .................................. 8

Wiring ........................................ 10

Mounting the outdoor sensor ..... 17

Advanced programming .......... 18

Appendices

Standards ................................. 22

Warranty information ................ 23

Read and save these instructions.

® U.S. Re gistered Trademark. Pa tents pendi ng. Part nu mber DG115EZIAQ.

Copyr ight © 2011 Honey well Intern ational In c. All right s reserve d.

About TrueIAQ

The TrueIAQ® monitors and automatically adjusts operation of your whole-house humid­ifier, dehumidifier, ventilator, or bath fan.

Maintaining proper indoor humidity minimizes the potential for unhealthy airborne pol­lutants to grow. Having too little humidity can leave you vulnerable to infections and
uncomfortable dry skin. Too much humidity creates ideal breeding grounds for mold,
mildew and dust mites. Humidified air also feels warmer in the winter, and dry air feels
cooler in the summer.

TrueIAQ can adjust humidity with or without dependency on HVAC equipment opera­tion. If you have both a humidifier and dehumidifier installed, the TrueIAQ can automati­cally change over to the appropriate equipment based on your comfort settings and the
changing outdoor conditions.

TrueIAQ can also deliver fresh air with or without dependency on HVAC equipment
operation. Today’s building codes require homes to be built more tightly for energy effi­ciency, but that tightness can also trap indoor air pollutants, such as cooking odors,
cleaning agents, radon, and carbon dioxide/monoxide. TrueIAQ provides cost-effective
ventilation in accordance to industry standards. In addition, the TrueIAQ can be pro­grammed to deliver ventilation during set times of the day or night.

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®

Operation

TrueIAQ® can be used to control the humidity levels in your home, and control fresh air
intake in accordance to industry recommendations (ASHRAE 62.2-2010).

Comfort Settings: Feedback
on your indoor IAQ conditions.

Outdoor Conditions1: Actual
outdoor temperature and
humidity.

Equipment Operation:
Displays what equipment is
operating at a given time.

More: Advances between
installed IAQ equipment control
options.

1

Actual outdoor temperature and humidity will only be displayed if the outdoor sensor is installed.

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68

76

PM

12 15

In

%

40

Out

%

55

:

Indoor Conditions: Actual
indoor temperature and
humidity.

Programmable Clock:
Displays time and allows
IAQ equipment programming
based on time.

Maintenance Reminders:
Notifies you when your equip­ment needs service.

Done: Saves changes.

Toggle Arrows: Changes the

comfort levels of your IAQ
equipment operation.

M24931

Display screen reference

Wet: Indoor

humidity levels are

Dry: Indoor humidity levels
are below 20% relative
humidity (RH.)

De Humidify: If “Humidify” is dis­played, the control is calling for
more humidity. If “DeHumidify” is
displayed, the control is calling for
humidity removal.

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above 60% RH.

40

68

76

55

PM

:

12 15

Service Reminders: All are timer-based
and will be displayed to indicate what
service is needed.

Window Frost: The control is
protecting your home against too
much humidity based on outdoor
conditions. Humidity levels in your
home may not reach your desired
RH% setting as a result.

In

%

Indoor temperature

Out

and humidity.

%

Outdoor temperature
and humidity.

Ventilate: Fresh air ventilation

is on.

M24932

Changing humidifier settings

Note: These items will appear only if a humidifier is installed on your system.

1. Set humidifier by pressing UP/DOWN arrows.

Tables below are recommended initial humidity settings based on
outdoor temperature. If window frost setting (see next page) is not
being used, the humidity setting should be adjusted manually when
outdoor conditions change.

Outdoor Temp. Setting

-20°F (-29°C) 15%

35

Humidify

Set

M24831

Red font is
blinking on
screen.

0°F (-18°C) 25%

20°F (-7°C) 35%

If both humidifier (hum) and dehumidifier (dehum) are installed:

Dehum setpoint can only be equal to or higher than Hum setpoint. If equal, equipment
changeover will be at least 5% higher (dehum) or lower (hum).

If not equal, changeover occurs at setpoint plus 2% RH (control’s deadband).

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%

Changing humidifier settings

LESS HUMIDITY

MORE HUMIDIT

Y

M24832

2. Press “More” to enter Window Frost Protection. Use the UP/DOWN
arrows to set frost protection level.

Window Frost

LOOSE HOME/SINGLE-PANE WINDOWS

123456789

TIGHT HOME/TRIPLE-PANE WINDOWS

M24830

On the first cold day after TrueIAQ® is installed, look for condensation
on windows. If present, lower Frost Protection by one. Once set for your
home, Frost Protection does not need to be changed again.

3. Press “More” again to enter operation style. Press the UP/DOWN
arrows to set.

• “Auto”runshumidifierautomaticallyaccordingtosettings.

• “Off”turnsthehumidifieroff.

4. Press “Done” to save settings, or “More” to enter dehumidifier
settings.

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7

Humidify

Auto Off

Humidify

M24833

Changing dehumidifier and ventilation settings

Note: These items will appear only if a dehumidifier is installed. If both a humidifier

and dehumidifier are installed, these settings will appear after pushing “More” from the
humidifier operation style screen.

1. Set dehumidifier by pressing the UP/DOWN arrows. RH% will change
in increments of five.

2. Press “More” to enter operation style. Press the UP/DOWN arrows to
set.

• “Auto”runsdehumidifierautomaticallyaccordingtoyourRH%

settings.

• “Off”turnsthedehumidifieroff.

3. Press “Done” to save settings, or “More” to enter ventilation settings.

Note: These items will appear only if a ventilator is installed.

1. Use the UP/DOWN arrows to run ventilation temporarily. Range is
from 20 to 480 minutes, in 20-minute increments.

2. Press “More” again to enter operation style.

• “Auto”runsventilationaccordingtoinstallersettings.

• “ON”runsventilationcontinuously.

• “OFF”turnsventilationoff.Inthismode,ventilationwillonly

run if turned on by a remote switch.

3. Press “Done” to save settings, or “More” to enter time settings.

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60

DeHumidify

Set

Auto Off

DeHumidify

Time On

2000

Auto On Off

M24834

M24835

Ventilate

M24836

Ventilate

M24837

%

Changing time of day and service timers

68

40
55

:

76

%

%

In

Out

68

40
55

12 00

:

76

%

%

In

Out

68

40
55

12 15

:

76

%

%

In

Out

PM

12 00

Set

1. Press “More.” Adjust hour using the the UP/DOWN
arrows.

2. Press “More.” Adjust minutes using the UP/DOWN
arrows.

3. Press “Done” to save settings.

M24934

Set

M24935

M24933

Service Timers

Service timers appear when the humidifier, dehumidifier,
ventilator, air filter, and/or UV bulbs need service. Your HVAC
technician will set these timers during installation.

Resetting Service Timers

Press and hold the DOWN arrow for 5 seconds to reset your
service timers.

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