2C Auxiliary relay operation | Therma-Stor Products Group 90H

FOR HVAC INSTALLER ONLY

White	UA Base Unit

optional DAMPER	Yellow	Red	Blue	Green
		Red

	24 VAC

DEH 3000 Wiring Diagram

DMP COMP FAN

WARNING: TO AVOID TRANSFORMER DAMAGE ONLY CONNECT WHITE WIRE TO CONTROL IF DAMPER IS USED.

The white wire controls the optional motorized damper that can be installed into a fresh air duct. This provides the ability to control when fresh air is introduced into the building by using the ventilation timer function labeled “DMP” on the control (See Section 3.7). If the motorized damper is not used, DO NOT CONNECT THE WHITE WIRE

TO THE CONTROL OR DAMAGE TO THE TRANSFORMER MAY RESULT. Simply leave the (DMP) terminal unused if the damper is not used, and cap off the white lead fro mthe Ultra-Aire base unit.

5.2C Auxiliary relay operation

At times it may be desirable to coordinate fan operation of the central heating/cooling system with dehumidifier operation. The DEH 3000 features a relay that provides this ability. The relay terminals labeled NC, COM and NO operate according to the following chart:

Dehumidification
Operation	COM/NO	COM/NC

ON	CLOSED	OPEN
OFF	OPEN	CLOSED

Common uses (assuming standard thermostat wiring color schemes as noted):

Disengage A/C during dehumidification Redirect the yellow thermostat wire to the NC terminal. Wire the yellow wire from the A/C to the COM (B) terminal.

Engage A/C during dehumidification

Connect a wire from the “R” terminal on the the thermostat to the “com” terminal on the DEH 3000. Connect a wire from the “NO” terminal on the DEH 3000 to the “Y1” terminal on the thermostat.

5.2D Dehumidifier lockout/activation AC sensor

The control has the ability to activate the dehumidifier or deactivate the dehumidifier when the air conditioner is running.

Standard wire colors for thermostats are as follows:

Description	Color	Terminal code

24VAC Return	Red	R

Call for Heat	White	W or W1

Force Fan On	Green	G

Compressor
Call for Cooling	Yellow	Y or Y1

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

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.