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1 Introduction
This manual includes installation, operation, and troubleshooting instructions for the HCU unit. The
engineers at Munters DryCool have designed the HoneyCombe
®
dehumidifier using state-of-the-art
technology. The unit is durable, simple to operate, and needs very little maintenance.
The HCU is controlled by an external Novar IOM controller.
The HCU unit is designed to provide an economical way to bring makeup air into the space and control
space temperature and humidity at the same time. The HCU first uses a cooling coil to cool and
dehumidify the air. The air is cool and saturated with moisture as it leaves the cooling coil. The air is then
passed through a desiccant wheel which converts the latent heat (moisture) into sensible heat. This
raises the air temperature to a neutral condition and at the same time lowers the dew point. The desiccant
wheel is reactivated by recycling heat from the condenser coil. The HCU can provide cooling only by
simply turning off the desiccant wheel.
A conventional air conditioner cools the air and removes some of the moisture. It works well at design
conditions of high ambient temperature with mild humidity conditions. However, at more moderate
ambient temperature conditions with greater moisture levels, the conventional air conditioner will overcool
the air and not dehumidify sufficiently.
The HCU can provide years of trouble-free service if you follow the recommendations listed in this
manual. We strongly recommended that you read this entire manual. The manual describes how to get
the best service from your unit. While a DryCool dehumidifier is easy to operate, it is a bit different from
most air handling equipment.
If you do not understand a part of this manual, or have a question concerning the dehumidifier, call the
DryCool Technical Service Department at (800) 229-8557, and speak with one of the Service Operation
Technicians.
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