Figure 13
Fan/Filter Switch
Figure 12
Humidity Control Adjustment Knob

FOR HVAC INSTALLER ONLY

4.7A Humidity/Fan Control Panel WITHOUT Fresh Air Ventilation or Damper

The humidity/fan control panel automatically controls the humidity of the living space. The humidity/fan control panel contains an adjustable humidity control and a fan switch. The panel has a cover that must remain open to the air within the living space for accurate

humidity sensing. Position the fan switch ON when the home is occupied. This filters and circulates air throughout the home. For humidity control operation refer to section 4.8.

4.7B Humidity/Fan Control Panel

WITH Fresh Air Ventilation and WITHOUT Damper

The humidity/fan control panel automatically controls the humidity of the living space. The humidity/fan control panel contains an adjustable humidity control and a fan switch. The panel has a cover that must remain open to the air within the living space for accurate humidity sensing. Position the fan switch “ON” when the home

is occupied. This filters and circulates air throughout the home. Outside air is introduced whenever fan is “ON.” Manual operation of fan filter switch controls outside air and ventilation. Since the fan operates whenever the UA-135H is dehumidifying outside air will be introduced. For humidity control operation refer to section 4.8.

4.7C Humidity/Fan Control Panel

WITH Fresh Air Ventilation AND Damper

In this configuration, a motorized damper has been installed in the fresh air duct. When the fan/filter switch is in the “OFF” position, the damper is closed. The UA-135H will then circulate and dehumidify air to provide humidity control. When the fan/filter switch is in the “ON” position, the motorized damper will open and the fan will run, introducing outside air. The unit may or may not be dehumidifying in the ventilation mode, depending on the humidity control setting. See Section

4.7D Ventilation Timer and Humidity Control WITH Fresh Air AND Motorized Damper

Refer to sections 4.8 through 4.13.

4.7E DEH 2000 Digital Controller

WITH Fresh Air AND Damper

Refer to Section 5.

4.7F DEH 2000 Digital Controller WITHOUT Fresh Air

Refer to Sections 5 through Section 5.2G only.

4.8 Humidity Control Adjustment

Set the humidity control to the desired humidity level for the home. Turning the knob clockwise results in a drier setting. See the back of the control panel cover for set points. The dehumidifier will run continuously until the relative humidity (RH) is reduced to the humidity control dial setting. Setting the humidity control to lower RH levels will NOT increase the unit's dehumidification rate; the

unit will simply run longer to reduce the area's RH to the setting. The UA-135H unit (and refrigerant-based dehumidifiers in general) will reduce a warm space's RH to a lower level than that of a cool space. Therefore there is no benefit to set the humidity control to excessively low levels in cool rooms; doing so will result in long periods of ineffective dehumidifier run time. Settings below 45% are not recommended.

4.9 Fan/Filter Switch

Turning ON the fan/filter switch to FAN ON” position will cause the UA-135H impeller fan to run continuously, whether the UA-135H is dehumidifying or not. This function is desirable if the unit is used for air circulation and filtration to achieve maximum indoor air quality. When the switch is “FAN ON” position, air will be constantly filtered through the UA-135H and circulated

throughout the house. When the switch is “FAN AUTO” position the impeller fan will operate only when the humidity control calls for dehumidification or when the ventilation timer calls for ventilation.

4.10 Ventilation Timer

The ventilation timer controls the impeller fan and the motorized fresh air damper. When the ventilation timer is activated, the UA- 135H 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 as suggested by applicable codes and standards.The ventilation timer is an electronic timer that displays the current time. This timer has battery backup, so it will not require resetting after a power outage. Following a prolonged power outage the display of the timer will flash on and off indicating a power outage has occurred. The one- minute time increments of the ventilation timer allow you to program the ventilation of your home to fit your schedule.

The ventilation timer allows six programs with each program having one "on" and one "off" event. A program allows the user to turn the ventilation on at a certain day and time, then it allows them to turn the ventilation off at a certain day and time. Each of these programs can be repeated daily or weekly or during a specified block of days. All six of the programs operate independently of each other. If the timer fails to operate or operates erratically, check that the control

8

Ultra-Aire 135H Installer’s & Owner’s Manual

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Therma-Stor Products Group UA-135H 7E DEH 2000 Digital Controller WITH Fresh Air and Damper, Humidity Control Adjustment
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UA-135H specifications

The Therma-Stor Products Group UA-135H is a cutting-edge unit designed for efficient humidity control in various settings, especially in residential and commercial environments. This product stands out due to its robust construction and innovative technology, making it a preferred choice for those looking to maintain optimal air quality.

One of the key features of the UA-135H is its high-capacity dehumidification ability. With a removal capacity of up to 135 pints per day, this unit is ideal for tackling dampness in basements, crawl spaces, and larger living areas. This impressive capacity allows for effective moisture management, which is crucial in preventing mold growth and maintaining a healthy indoor environment.

Technologically advanced, the UA-135H incorporates a powerful compressor and a high-efficiency fan that ensures rapid and uniform air circulation. This design not only aids in faster moisture extraction but also enhances the overall energy efficiency of the unit. The built-in hygrometer monitors the humidity levels in real-time, allowing for automatic adjustments to optimize performance and reduce energy consumption.

Ease of use is another highlight of the UA-135H. The unit features a user-friendly digital control panel, enabling users to set their desired humidity levels with precision. Additionally, the product is equipped with a continuous drainage option, allowing for hassle-free operation without the need for frequent emptying of the water tank.

Durability is a hallmark of the UA-135H, featuring a corrosion-resistant housing that ensures longevity even in challenging environments. The unit operates quietly, providing effective humidity control without disturbing the peace of your home or workplace.

Energy efficiency ratings further enhance the appeal of the UA-135H. It not only meets but often exceeds industry standards, translating to cost savings on energy bills. The unit is also designed for easy maintenance, with accessible filters that can be cleaned or replaced with minimal effort, ensuring optimal performance over time.

In conclusion, the Therma-Stor Products Group UA-135H is a reliable and efficient solution for humidity control. Its combination of high-capacity dehumidification, advanced technology, user-friendly features, and durable design makes it an excellent investment for maintaining a healthy indoor environment. Whether for residential or commercial use, the UA-135H promises effective performance and long-lasting reliability.
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