IceDry 800/1400
4.5 Where to install the dehumidifier
Select a place where the dehumidifier causes the least disturbance to the cold-storage room activities, while
allowing for maintenance work such as process filter replacement.
When the unit is installed on a base frame, the base frame must be designed in such a way that it can easily be
removed from the cold store/freezer. Make sure openings for forklift are included.
The dehumidifier must be placed so that there is no risk of the process intake and filter icing up. Ice normally
forms near the doors and air-locks of the cold store where warm, humid air flows in.
Install the dehumidifier in such a way that the reactivation air and wet air ducts are as short as possible, max
1.5 m. See section
4.7, Installation examples — cold storage room (freezer)
.
4.6 Ducting
4.6.1 General recommendations
NOTE!
Vibration reduction. If there is a need to for reduction of vibrations from the dehumidifier, contact Munters
for instructions. Refer to standard EN 1299+A1:2008.
Due to the cold surroundings and risk of freezing, it is vital that all ducting are installed according to
instructions. See also
4.7, Installation examples — cold storage room (freezer)
To facilitate easy transfer of the dehumidifier out of the cold-storage room for service, all duct connections
should be easily disassembled. Should the dehumidifier, despite this recommendation, be installed in such a
way that it cannot be easily removed for service, it is important that the minimum service space requirements
are met, see
8.1, Dimensions and service space
. A vapour-tight connection between the wall and the duct is vital.
Preferably, polyurethane foam should be used if the temperature is sufficiently high during application.
When installing ductwork between the dehumidifier and the inlet and outlet connections, the following
recommendations should be observed:
■
The length of ductwork should be kept as short as possible to minimise static air pressure losses.
■
To maintain performance, all rigid process or reactivation air ductwork joints must be air and vapour
tight.
■
The design of the duct connections should facilitate easy disconnection of the unit for service outside
the cold-storage room.
■
Condensation easily builds up on the inside of the duct due to the high humidity of the reactivation air.
To avoid condensation, the ductwork must be insulated.
■
The process air ductwork should be insulated to prevent condensation from developing on the outside
of the duct whenever the temperature of the air within the duct falls below the dewpoint of the ambient
air through which the ductwork is routed.
■
The wet air leaving the dehumidifier will easily cause condensation on the inside of the duct walls due to
the high moisture content. This must be avoided by insulating the ducts.
■
Ensure that access for operation and servicing is not restricted when designing and installing ducting.
For more information, see section
8.1, Dimensions and service space
.
■
To reduce noise and/or vibration being transmitted along rigid ductwork, good quality, airtight flexible
connections should be fitted.
■
Ducts mounted directly onto the dehumidifier should be adequately supported to minimise the load and
stress due to the weight and movement of the ducting.
8
Installation
190TGB-1037-G1307
