4. COMMISSIONING
18
4. Co mm ission ing
4.1 Introduction
When servicing on air handling units always turn off the electricity on the main switch
and
the
repair switch (complete shutdown)
and
secure for reconnection from unauthorized persons.
Only open the inspection doors when the unit is totally stopped and the fans have come to a
stop. After switching off the unit the fan impeller will run for about 1 to 3 minutes before
stopping totally. The fan wheel must never be stopped by hand or with an object.
Commissioning, maintenance and repair work should only be carried out by trained specialists
or by people supervised by authorized staff. It is the responsibility of the fitter to read and
understand this guide and other given information.
4.1.1 Unit function DanX
– XWPRS
The DanX
– XWPRS consist of a cross flow heat exchanger in combination with a compressor
driven heat pump for heating, cooling and dehumidification in the same module.
The DanX XWPRS is using a minimum of outdoor air which is required for hygienic reasons
in the pool hall. To keep pressure drop low and have a high dehumidification capacity in the
heat pump, only a part of the wet swimming pool air is run through the heat exchanger and
evaporator.
Part of the exhaust air is leaving the unit and part of the exhaust air is re-circulated to join the
outdoor air. These two airstreams are then preheated in the cross flow heat exchanger and
afterwards heated in the heat pump condenser. If the supply air temperature is too low the
re-heater is activated. In this operation mode the dehumidification is obtained with the dry
outdoor air and heat pump. If the dehumidification capacity is not sufficient the amount of dry
outdoor air automatically increases.
For further explanations about the controls of this unit, please refer to the manual of the control
panel.
Summary of Contents for DanX XWPRS 12/24
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