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4. CONTROLS
4.1 Introduction
A complete DanX 1/2/3 ventilation system for swimming pools requires a control system that
corresponds to the actual unit configuration in the most energy efficient way possible. The
controls are built into the unit and factory tested before delivery thereby providing the most
reliable and energy efficient operation possible. This chapter gives you an introduction how
to set the control system for exactly your swimming pool.
4.1.1 Unit function DanX 1/2/3 HP
The DanX 1/2/3 HP consists of a double cross flow heat exchanger in combination with a
compressor driven heat pump and a mixing box.
The DanX 1/2/3 HP uses a minimum of outdoor air required for hygienic reasons in the pool
hall. To keep pressure drop low and the dehumidification capacity of the heat pump high,
only a part of the humid 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 double cross flow heat
exchanger and afterwards heated in the heat pumps condenser.
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 enough, the amount of dry outdoor air automatically increases.
If the unit is running in night/closed mode, the outdoor and exhaust air damper are fully
closed and the dehumidification is only done with the heat pump.
4.1.2 Unit function DanX 1/2/3 XD
The DanX 1/2/3 XD consists of a double cross flow heat exchanger and a mixing box.
The DanX 1/2/3 XD is uses a minimum of outdoor air required for hygienic reasons in the
pool hall. To keep pressure drops low, only part of the outdoor air is run through the heat
exchanger. The rest is re-circulated and heated in the re-heater. If the dehumidification
capacity is not enough, the amount of dry outdoor air automatically increases.
If the unit is running in night/closed mode, the outdoor and exhaust air damper are fully
closed and opens only partly if dehumidification is needed.
4.1.3 Controls in general
At the front of the unit you will find the main service breaker. This breaker disconnects all
power to the unit and control panel, so no safety function like a frost thermostat is active any
longer! Neither outdoor/exhaust air damper will be closed, which will lead cooled air the pool
room. Therefore, do not stop the unit with this switch! Always stop the unit with the help of
the controller!
In the front door you will find the DanX 1/2/3 control system, which is based on a Honeywell
MVC 80 controller. On the left- or right-hand side of the controller you will see a RJ45
connection, which is used for easy servicing. Your service company will have to right tools to
use this service device.
13
If the supply air
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