Honeywell DG115EZIAQ TrueIAQ Digital THERMOSTAT
About TruelAQ
The TruelAQ® 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. TruelAQ can adjust humidity with or without dependency on HVAC equipment operation. If you have both a humidifier and dehumidifier installed, the TruelAQ can automatically change over to the appropriate equipment based on your comfort settings and the changing outdoor conditions. TruelAQ 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. TruelAQ provides cost-effective ventilation in accordance to industry standards. In addition, the TruelAQ can be programmed to deliver ventilation during set times of the day or night
Operation
TruelAQ® can be used to control the humidity levels in your home, and control fresh air intake in accordance to industry recommendations (ASH RAE 62.2).
Display screen reference
Changing humidifier settings
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
- If both humidifier (hum) and dehumidifier (dehum) are installed: Humidify Set M24831 Red font is blinking on screen.
- 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).
Changing humidifier settings
Press “More” to enter Window Frost Protection. Use the UP/DOWN arrows to set frost protection level.
On the first cold day after TruelAQ® 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.
- 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.
- Press “Done” to save settings, or “More” to enter dehumidifier settings.
Changing dehumidifier and ventilation settings
- Set dehumidifier by pressing the UP/DOWN arrows. RH% will change in increments of five.
- 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.
- “Auto” runs dehumidifier automatically according to your RH% settings.
- Press “Done” to save settings, or “More” to enter ventilation settings.
Note: These items will appear only if a ventilator is installed.
- Use the UP/DOWN arrows to run ventilation temporarily. Range is from 20 to 480 minutes, in 20-minute increments.
- 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.
- Press “Done” to save settings, or “More” to enter time settings.
Changing time of day and service timers
- Press “More.” Adjust hour using the the UP/DOWN arrows.
- Press “More.” Adjust minutes using the UP/DOWN arrows.
- Press “Done” to save settings
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.
Installation
- Turn system power off.
- Choose a location. TruelAQ® can be mounted to a wall or directly to the return duct .
- Loosen the cover screw.
- Separate the front housing from the base.
- For wall mounting, run wires through the back hole to the terminals. Wire size for all connectors: 2 x 18 AWG to 1 X 22 AWG.
- Install the mounting plate using two screws.
- For duct mounting, (A) snap out side wall clip and attach ~ / as shown. Run wires through the side wall hole, under , If) the clip, to the terminals. (B) Snap in sensor cap.
- Reinstall the front housing on the power base, and secure with screw.
- Apply power to the system
Wiring
| Pin | Pin description | Pin capacity |
| R | 24V supply. Must be common to G output. | 24Vac±20% 1 .5
amp max. |
| C | 24V suooly common. | 24Vac±20% |
| Sensor | Communication and supply bus to remote sensors (sensor pins not polarized). | 24Vdc 64mA max out |
| Sensor | ||
| Switch | Override switch input. Active when R is applied | 24Vac±20°/o, 10mA max in |
| w | W input to sense when the thermostat is calling for heat. Active when R is applied. | 2:4Vac±20%,
10mA max in |
| G | G input to sense fan calls. Active when R is applied. Fan output to activate system fan.
R8222 lsollation Relay may be required if G is not isolated through the thermostat. |
24Vac±20%,
10mA max in 24V:ac fmm IR, 1Amo max out |
| Vent 1 | Dry contact output. Opens the vent
damper of an HRV or the bathroom fan and Damper. |
24Vac from R,
1Amp max out |
| Vent 2 | ||
| Dehum1 | Dry contact output. Starts the Dehumidifier or an alternate fan speed. | 24V:ac from R,
1Amp max out |
| Dehum 2 | ||
| Hum 1 | Dry contact output. Starts the Humidifier. | 24Vac from R,
1Amp max out |
| Hum 2 |
Mounting the outdoor sensor
- Do not mount on the south side of the house or in direct exposure to sunlight.
- Keep at least 4 feet away from exhaust vents.
- If in an air intake, place 1 foot closer to outside wall.
- Place at least 6 inches higher than possible snow buildup.
- Do not route sensor wire near high voltage wires.
Advanced HVAC installer setup instructions
- Press and hold the UP/ DOWN arrows for 3 seconds
- Press “More” to advance to the next setup option. See table on next page.
- Use the UP/DOWN arrows to select options. See table on next page.
- Press “Done” at any time to save and return to the home screen
Advanced programming
| Hum Service Timer | 0,1,3,6,12 (months intermittent | |||
| Hum Water Filter Service | 0.1,3,6,12 | (months intermittent1
(months continuous |
||
| Air Filter Service Timer | 0,1.3,6.12 | |||
| Vent Filter Service Timer | 0,1,3,6,1.2 | |||
| Vent Service Type | 0=Clean ventilation filter
1=Chanae ventilation filter |
|||
| 110 | UV Bulb Service Reminder | I 0,6,12,24 (months continuous | ||
| 115 | Vent Options I | 0=No vent in.stalled
1=Ventilation usi.ng VENT contacts 2=Ventilation using VENT contacts for high speed and DEHUM contacts for low speed (only if dehum not installed) 3=Ventilation using VENT contacts and DEHUM contacts activated together (auxiliary ventilation device such as exhaust fan |
||
| 120 | Vent Operation I | 0=Vent forces HVAC fan on
1=Vent operates independent of HVAC fan |
||
| 125 | Proarammed Vent | I 0=OFF: 1=ON | ||
| 130 | Program Start Time 115 min increments | |||
| appears onlv if ISU125=1) 5:00 PM | ||||
| 135 | Program End Time 115 min increments appears onlv if ISU125=1) 9:00 AM | |||
| 140 | ASHRAE: # of Bedrooms 11-6 bedrooms: 2 | |||
| 145 | ASHRAE: Home’s So Ft 110=1.000 Sa Ft: UP to 50=5i000 SQ Ft | |||
| 3:30 CFM: 4=40 CFM1 u | |||||
| Maximum Vent | 00: 30%-95%. (0 | ,o setting runs to ASHRAE 100% | |||
| Vent Shut-offs | O=Auto vent regardless of outdoor conditions
1=Off at 75°F dew point or :99°F air temp 2=Low speed at 65°F dew point or 85°F air temp. Off at 75°F dew point or 99°F air temp Note: If optiion 1 or 2 is selected, then ASHRAE 62.2 Standard will not be met. |
||||
| 165 | Dehumidification Via Fresh Air Ventilator | 0=Do not use ventilation for dehum
1=Allow vent for dehum per outdoor condiU01ns. With dehum installed, control. to setpoint. Without dehum installed, control to the Hum setpoint +10% max. 60%). |
|||
Environmental standards/life expectancy
TruelAQe Control and Outdoor Sensor
- Operating/Storage temp: -40°F to 120°F (-40°C to 50°C)
- Condensation Protection: 0-100%
- Operating RH%: 0% to 99% noncondensing
- (TruelAQ). Outdoor sensor protected from condensation.
- Temp reading range: -40°C to 50°C (-40°F to 122°F)
- Temp accuracy within range: 0.4°C (0.72°F)
- Humidity reading range: 5% to 95%
- Humidity temp accurate reading range: -20°C to 50°C (-17°F to 122°F)
- Humidity accuracy over that range: ±4.5%
- Maximum real time clock drift over 1 year: 7 minutes
- Vertical mount to cover one gang box
- Flame Rating: UL94V-0
- RoHS compliant
- Relay life: 100,000 cycles at 1 A 24Vac
Power Supply
- 24Vac ± 20% 50, 60Hz (TruelAQ control)
- 24Vdc 2-wire over communication bus, not polarized (outdoor sensor)
- Protected against voltage spikes
- Not protected against over voltage connection (ex 120 or 240V)
- All setup parameters are stored indefinitely
In the Event of Power Failure
- Real-time clock is maintained for 4 hours
- All outputs are deactivated
- All setup parameters are stored indefinitely
Mechanical Design
- Dimensions: 2-3/4″ W x 4-3/4″ H x 7 /8″ D
- (TruelAQ control); 2-3/4″ W x 3-3/4″ H x 7 /8″
- D (Outdoor sensor)
- Weight: .35 lbs (TruelAQ control); .15 lbs (Outdoor sensor)
- Temperature Unit Display: °Cl°F
warranty
5-year limited warranty
Honeywell warrants this product, excluding battery, to be free from defects in the workmanship or materials, under normal use and service, for a period of five (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, (Q return it, with a bill of sale or other dated proof of purchase, 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 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 FIVE-YEAR 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 specific legal rights, and you may have other rights which vary from state to state. If you have any questions concerning this warranty, 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 Limitee, 35 Dynamic Drive, Toronto, Ontario M1V429.
Automation and Control Solutions
- Honeywell International Inc.
- 1985 Douglas Drive North
- Golden Valley, MN 55422
- Honeywell Limited-Honeywell Limitee
- 35 Dynamic Drive
- Toronto, Ontario M1 V 429
- https://www.honeywellhome.com/us/en/support/
- ® U.S. Registered Trademark.
- © 2008 Honeywell International Inc.
- Patents pending.
- 69-2072-05 M.S. Rev. 07-08
Reference
Download Manual:
Honeywell DG115EZIAQ TrueIAQ Digital THERMOSTAT Owners Manual
Honeywell DG115EZIAQ TrueIAQ Digital THERMOSTAT Owners Manual