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WH series dehumidifiers of PREAIR are a kind of high end whole house dehumidifier, which can be applied in attics, crawl spaces, basements, bathrooms, kitchens, laundry rooms, etc. People living in Oceanic or Mediterranean climate zones face the challenge of high humidity in winter. Are you aware of the condensation on the living room windows, the persistent droplets on the bathroom walls and ceilings after bathing, the moldy basement/storage room, and the damp blankets? How to change the situation and improve the quality of life? Do you choose to open windows and use ventilation fans in winter? These practices are insufficient and may cause physical burden on the elderly and children. Based on comprehensive market research and experimental studies, using a fresh air dehumidifier is the most effective and economical approach. Following my explanation, you can understand the working principle of the fresh air dehumidifier and find how well the machine matches your living environment. Then, some control methods for this type of dehumidifier will be listed, and the most convenient one can be used according to your own conditions.
Working Principle of the Fresh Air Dehumidifier
Air Intake:
The dehumidifier pulls in fresh outdoor air through an intake vent or a dedicated duct.
This air is typically filtered to remove dust, pollen, and other particulate matter before it enters the system.
Humidity Extraction:
As the fresh air passes through the dehumidifier, it is directed over a set of cooling coils.
The air cools down as it passes over the cold coils, and since cooler air holds less moisture, water vapor in the air condenses onto the coils, turning into liquid water.
The condensed water (dehumidified water) is drained away through a water pipe.
Reheated Air Output:
After the moisture is removed, the now drier air is reheated (if necessary) to return to a comfortable temperature before being released back into the room.
This step is essential to prevent the room from getting too cold, which could make the environment uncomfortable.
Air Ventilation:
Simultaneously, the dehumidifier ensures a continuous supply of fresh air, balancing air exchange with humidity control.
Control Methods for the Whole House Dehumidifier
1. Operate the Control Panel Directly
There is an LCD panel on the WH dehumidifier, which can display the ambient temperature, relative humidity, wind speed gear, running time length, and fault code, etc. Users can adjust the timer, target humidity level, and operation state (dehumidification, defrosting, drainage).
Pro: Through the panel, users can easily control the machine.
Con: The only drawback is that users can only walk up to the machine to operate the control panel.
Suggested scenario: Use the onboard panel when the entire house dehumidifier is installed in an easily accessible location.
2.Use a K30M Controller
The matched controller, K30M, is very simple and useful. It can be easily connected to the WH dehumidifier through the 6P6C telephone line, terminal model RJ12, or Modbus serial communication mode. The controller has an LCD panel that clearly shows the same data as the onboard panel. PREAIR suggests using a K30M controller to save time.
Pro: Can be remotely controlled; Easy to operate; Not afraid of space limitations.
Con: Need extra purchase.
Suggested scenario: Use the K30M if the whole room dehumidifier is installed in the attic, crawl space, and basement which are small and narrow.
3.Apply the Modbus Controller
A Modbus system could measure temperature and humidity in a room and send the measurements to a computer. A Modbus controller uses the Modbus protocol to transmit data between electronic devices. Use a tablet computer (act as a Modbus client) to read data and issue commands to control the WH dehumidifier (act as a Modbus server). Users can switch on and off, set the target humidity level, adjust wind speeds, read the current temp and humidity, and achieve other functions through the tablet.
Pro: Collect historical information; Analyze data trends; Remote control; Save time.
Con: High professionalism.
Suggested scenario: Families with sufficient budgets have high requirements for indoor temperature and humidity. Or, for commercial and industrial use.
4.Resort to the Third Party Controller
Users can connect a third-party controller through the six-bit wiring block (FLOAT-FLOAT-DHUM-R-FAN-C), which is located on the side panel of the dehumidifier unit. The function of every bit: 1-2)FLOAT: External low voltage float switch or water sensor. 3)DHUM: Compressor and fan operation for dehumidification. 4)R: 12V output. 5)FAN: Fan activation only for ventilation. 6)C: 12V output. External 12V devices can be powered from R and C terminals (20VA max). If you already have a controller, you can save on this cost. Use a controller that you are familiar with.
Pro: Strong adaptability; Remote control; Flexible use; High cost-effectiveness.
Con: It requires users extra buy or already possess a controller.
Suggested scenario: The under house dehumidifier is installed in the attic, crawl space, and basement which are small and narrow. It is compatible with your third-party controller (make sure with the manufacturer).
Does the whole house dehumidifier with fresh air intake astonish you? It not only helps get rid of extra moisture, particles, dust, and mold but also improves indoor air quality and eases your respiratory problems. Many practical and simple control methods for your choice. Through the application of whole house dehumidifier, people can easily solve the problem of high humidity in winter and improve their quality of life. PREAIR is a professional whole house dehumidifier manufacturer that provides high end dehumidification equipment. Look forward to working with you.
Post time: Jan-08-2025
