Therma-Stor Products Group 90H 4F Ducting for High Efficiency Filtration, Noise Abatement

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FOR HVAC INSTALLER ONLY

Crawlspace Installation: Install a separate return for the UA-90H

in a central area of the structure. Optional: Duct the supply of the UA-90H to a 10" x 10" x 10" tee/damper that is 20% open to the crawlspace if desired. Duct the other side of the tee to the air supply of the existing HVAC system with a backdraft damper. Connect an insulated duct from outside to the 6" collar of the UA- 90H if you wish to provide optional ventilation air.

Instead of installing a separate return to the UA-90H, and if the existing system has multiple returns, it is possible to select one to disconnect from the existing forced air system and use it for the dedicated Ultra-Aire return. Always select a return from a central location in the structure in an area that is always open to the rest of the structure. Do not use a return from a room that may have its door closed much of the time or, alternatively, install a separate return from the open part of the house.

4.4D Installation in an Attic with an Existing Forced Air HVAC System

IMPORTANT

ALWAYS install a catch pan with a drain or float interrupt for condensate under the UA-90H in an attic or condensate may damage the living space below.

The interrupt switch should be installed in series with the field wire that connects the blue (#5) lead from the UA-90H to the blue (#5) lead on the control panel. If overflow occurs, this switch opens the compressor control circuit and stops water production before the catch pan overflows. The UA-90H will continue to ventilate or circulate air as normal, but will not dehumidify until this switch closes.

The preferred method of installation is to create a separate return for the UA-90H in a central area of the structure. Duct the supply of the UA-90H to the air supply of the existing HVAC system. Connect an insulated duct from outside to the 6" collar of the UA-90H if you wish to provide fresh make-up air. Adjust a damper in the duct to provide the desired.

4.4E Installation in a Structure with No Existing Forced Air HVAC System

When installing the UA-90H in a structure that does not have a forced air HVAC system, a single return for the UA-90H should be installed in central open area of the structure. DO NOT locate the return in a bathroom or a kitchen. The supplies of the UA-

90H should be located in the remote areas of the structure (such as bedrooms, den, etc.). By ducting this way, the air inside the structure will circulate through the UA-90H to be filtered and dehumidified. 6" diameter duct is recommended for branches to the bedrooms, 8" diameter duct is recommended for branches to larger areas. Connect an insulated duct from outside to the 6" collar of the UA-90H if you wish to provide ventilation. See Figure 4.

4.4F Ducting for High Efficiency Filtration

The standard filter included with the UA-90H is a very effective MERV 11 media filter. Additional filtering options, including charcoal filtration and 95% efficient filtration, are available with an optional external filter housing that may be installed with the UA-90H. The filter box is ducted to the intake of the UA-90H, and the intake ducting is then connected to the intake side of the filter box. See the optional accessories list or call the factory for details.

4.5 Noise Abatement

A length of 10 feet or more of acoustical flex ducting on the outlet of the UA-90H will reduce air noise from the fan. A length of flexible ducting on all UA-90H duct connections is recommended to reduce noise transmitted to rigid ductwork in the structure.

4.6 Controls

All control panels should be mounted in a central area of the structure where it can accurately sense the humidity of the air in the living space and be accessed. All controls require field wiring from the unit location to the panel mount location.

 

 

Figure 1:

Figure 2: Ventilation Timer

Humidity/Fan Control Panel

and Humidity Control Panel

Part No. 4024155

Part No. 4024125

 

 

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Ultra-Aire 90H Installer’s & Owner’s Manual

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Contents Air Filtration 4025700 Serial NoFresh Air Ventilation optional DehumidificationTable of Contents Read and Save These Instructions Safety PrecautionsIntended Application for Ultra-Aire 90H For Hvac Installer onlySpecifications InstallationDucting Condensate Water Removal3A Lifting Condensate 3B Condensate Pump KitExhaust fans are recommended in the bath rooms and kitchen 4B Ducting for Fresh Air OptionNoise Abatement 4F Ducting for High Efficiency FiltrationControls 6E DEH 2000 Digital Control with Fresh Air and Damper For Hvac Installer and HomeownerHumidity Control Adjustment Fan/Filter Switch9B Ventilation Schedule Ventilation Timer9A Setting the Time 9C Automatic or Manual Mode2B Wiring 2A Install InstructionsDEH 3000 Digital Control Installation Instructions Engage A/C during dehumidification 2C Auxiliary relay operation2D Dehumidifier lockout/activation AC sensor Dehumidification2E Location 2F Testing3E Setting Relative Humidity Setpoint 3B Setting3C On/Off Setting 3D Setting Clock Time3F Fan Setting and Operation For Hvac Installer only and HomeownerOperation 3H Intermittent or Programmed Ventilation 3J Default Settings 3I Temperature Cutout ProgrammingDEH 3000 Digital Control Optional Fresh Air Intake MaintenanceStandard Air Filter High Efficiency Air Filter4024155 Fan Control ULTRA-AIRE 90H Wiring DiagramWiring Diagrams UA-90H with Humidity/Fan Control UA-90H with Ventilation Timer/HumidityOptional Parts List UA-90H Indoor Air Quality System Service Parts List UA-90H Indoor Air Quality System For Homeowner Routine MaintenanceTroubleshooting ServiceTechnical Description Condensate Pump Kit Compressor/Capacitor ReplacementRefrigerant Charging Electric Ventilation DamperCondensate Pump Installation for Hvac Installer only Condensate Pump Installation for Hvac Installer only Condensate Pump Installation for Hvac Installer only Condensate Pump Installation for Hvac Installer only Condensate Pump Installation for Hvac Installer only Condensate Pump Installation for Hvac Installer only ULTRA-AIRE 90H Dehumidifier Limited Warranty PO Box 8680 Madison, WI Phone 608-222-5301 Fax

90H specifications

Therma-Stor Products Group 90H is a cutting-edge climate control solution designed for both residential and commercial applications. Renowned for its efficiency and reliability, the 90H model stands out due to its advanced features that cater to various environmental conditions.

One of the key highlights of the Therma-Stor 90H is its dual functionality as both a dehumidifier and an air exchanger, making it a versatile choice for maintaining optimal indoor humidity levels. The unit is engineered to handle spaces up to 2,500 square feet, making it ideal for basements, crawl spaces, and larger living areas.

Incorporating state-of-the-art technologies, the 90H operates using an energy-efficient compressor that significantly reduces power consumption. This not only minimizes operational costs but also contributes to a more environmentally friendly solution. Furthermore, the unit is equipped with variable-speed fans that ensure quiet operation while delivering consistent airflow throughout the space.

Another notable feature of the Therma-Stor 90H is its advanced control system. The integrated humidity control allows users to set precise humidity levels, ensuring that air quality is maintained at optimal levels. The built-in hygrometer continuously monitors indoor humidity, automatically adjusting the unit’s performance to provide the most efficient dehumidification possible.

Durability and ease of use are also key characteristics of the 90H. Constructed with high-quality materials, the unit is designed to withstand the rigors of continuous operation. Its compact design allows for easy installation and portability, making it suitable for virtually any setting.

Additionally, the Therma-Stor 90H features a user-friendly interface with intuitive controls, allowing users to monitor and adjust settings effortlessly. The unit also includes a convenient drainage system, enabling continuous operation without the need for constant manual intervention.

In summary, the Therma-Stor Products Group 90H is an innovative solution for effective moisture management. With its dual-functionality, energy-efficient operation, advanced humidity control, and robust construction, it stands out as a premier choice for maintaining a healthy indoor environment. Ideal for both residential and commercial use, the 90H redefines how we think about climate control and air quality.
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