FOR HVAC INSTALLER AND HOMEOWNER

point. It opens when the RH drops 4 to 6% below the set point. If the Ultra-Aire does not run, try turning the humidity control clockwise until it reaches the stop and the knob pointer points at “ON”.

The Ultra-Aire is equipped with a automatic defrost mechanism. If the Ultra-Aire operates in conditions that develop frost on the evaporator, it will sense the frost build-up and automatically defrost the evaporator. The Ultra-Aire may not appear to be operating correctly during the defrost sequence, but once the defrost is completed, the Ultra-Aire will resume dehumidifying.

7.7B Programmable Ventilation Timer

The ventilation timer controls the fan and the motorized fresh air damper. When the ventilation timer is activated, the central conditioning unit will circulate the indoor air, and bring in fresh air from outside. The ventilation timer should be set for the required ventilation of the residence. The home should be ventilated with fresh air whenever it is occupied. If the Ultra-Aire fails to ventilate as expected, check that the time on the timer is correct. For the timer to carry out the program schedule, the slide switch in the upper left corner on the timer must be set to “AUTO”. The slide switch in the upper right corner of the Ultra-Aire must be set to “RUN”. Also check the programs on the timer to be sure that the timer is calling for ventilation at the correct times. If the timer fails to operate or operates erratically, reset the timer; see section 3.5 of this manual.

7.8 Defrost Thermostat

The defrost thermostat is attached to the refrigerant suction tube between the accumulator and the compressor. It will automatically shut the compressor off if the low side refrigerant temperature drops due to excessive frost formation on the evaporator coil.

The fan will continue to run, causing air to flow through the evaporator coil and melt the ice. When the ice has melted, the evaporator temperature will rise and the thermostat will restart the compressor.

7.9 Electric Ventilation Damper

The electric ventilation damper is controlled by the ventilation timer. The damper will open when the ventilation timer is activated to allow fresh air into the structure through the 6" diameter fresh air inlet duct. The electric ventilation damper will remain closed when the ventilation timer is not activated to prevent over-ventilating the structure when the unit is dehumidifying or recirculating the indoor air.

The electric ventilation timer operates on 24 Vac from the control circuit. DO NOT connect high voltage to the damper motor or damage to the motor may result. DO NOT force the blade of the damper by hand or damage to the damper motor may result.

The damper opens in one direction only. The damper rotates very slowly, allow sufficient time for the damper to cycle. The damper will take approximately 1 minute to cycle from closed to open or from open to closed.

If the electric ventilation damper fails to operate:

1.Check that the wiring is correct and that voltage is present at the damper motor.

2.Check for any obstruction inside the damper.

If the electric ventilation damper fails to operate after performing these checks, it must be replaced.

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Ultra-Aire 100V Installer’s & Owner’s Manual

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Therma-Stor Products Group Ultra-Aire 100V owner manual 7B Programmable Ventilation Timer, Defrost Thermostat
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Ultra-Aire 100V specifications

The Ultra-Aire 100V by Therma-Stor Products Group is a powerful and efficient ventilating dehumidifier designed to tackle excess moisture in residential spaces. Known for its compact design and advanced technology, the Ultra-Aire 100V is an ideal solution for basements, crawl spaces, and high humidity areas.

One of the main features of the Ultra-Aire 100V is its high extraction capacity. With the ability to remove up to 100 pints of moisture per day, it effectively manages humidity levels, helping to prevent mold growth, mildew, and structural damage. This unit is equipped with an energy-efficient compressor that ensures optimum performance while minimizing energy consumption, making it an environmentally friendly choice for homeowners.

In addition to its powerful dehumidification capabilities, the Ultra-Aire 100V incorporates innovative technologies for enhanced functionality. The unit is designed with a built-in digital humidity control system, allowing users to set their desired humidity level with precision. The humidity control automatically adjusts the unit's operation, ensuring consistent moisture levels throughout the home.

Another key characteristic of the Ultra-Aire 100V is its convenience in installation and operation. The unit can be ducted into existing HVAC systems or operated as a standalone unit, providing flexibility to fit various home configurations. Its compact size also makes it easy to install in tight spaces, such as crawl spaces and attics, without sacrificing performance.

For added convenience, the Ultra-Aire 100V features a user-friendly interface. The digital display provides clear visibility of the current humidity level and operational status, while the built-in timer allows for programming operational schedules. This means homeowners can set the dehumidifier to run during specific times, optimizing performance and energy usage.

Durability is another hallmark of the Ultra-Aire 100V. Constructed with high-quality materials, this unit is built to withstand the challenges of damp environments, ensuring long-lasting performance. Additionally, its advanced filtration system captures airborne particles, improving indoor air quality by removing allergens and dust.

In conclusion, the Therma-Stor Products Group Ultra-Aire 100V stands out as a reliable dehumidification solution. With its high extraction capacity, energy-efficient operation, user-friendly controls, and durable build, this dehumidifier is an excellent choice for homeowners seeking to maintain a healthy and comfortable indoor environment. Whether combating humidity in a basement or managing moisture in a crawl space, the Ultra-Aire 100V proves to be an indispensable tool for humidity control.
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