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THERM CONNECT magna
08
WOLF run around coil systems
08.03.02 Exhaust air humidifier (optional)
When an adiabatic exhaust air humidifier is integrated, it is also controlled in cooling mode after the set flow rate
of water-glycol mixture has been reached.
Humidification is blocked at low temperatures by means of the outdoor air temperature specified by the customer.
This threshold value can be adjusted during commissioning.
After operation of the humidifier, the hardware signal "ventilation overrun" is output. This ensures that the evapora-
tion mats are completely dried before the ventilation is switched off.
When the exhaust humidifier is not in operation, the lines are flushed once a week to prevent germ formation in the
lines.
08.03.03 Feeding additional energy (optional)
When external additional energy is fed in, the Therm-Connect magna is first brought up to the full set flow rate
and the control valve of the feed-in is opened if the higher-level control system demands an even higher flow rate.
Thereby, a hardware signal "Request external heating/cooling" is issued so that the on-site heat/cooling can be
provided.
08.03.04 Power calculation (optional)
By recording the air-side temperatures before and after the high efficiency run around system coils and the water-
side values, the transmitted power of the THERM-CONNECT magna unit can be determined. These values are shown
in the display. In addition, a calculation of the heating and cooling energy over the period of one month is per-
formed. These monthly values are stored for heating energy and cooling energy for one year. In addition, the total
energy of a whole year is stored in the controller for 5 years.
08.03.05 Double pump (optional)
With a redundant double pump, two identical pumps are connected in parallel and protected against a hydraulic
short circuit by check valves. The pumps are controlled by a respective frequency converter, which enables further
operation with reduced power in case of failure of one pump/frequency converter. Depending on the requirements,
the pumps can be designed with half the flow rate or full flow rate and operated alternately in order to achieve the
same running times of the pumps as far as possible.
08.03.06 Reheater (optional)
When dehumidification cooling is integrated into the supply air unit, the supply air is reheated after dehumidifica-
tion via the controlled reheater. This "cold recovery" also is pre-cooling the air upstream of the dehumidification
cooler, thus saving cooling capacity to be provided externally.
08.03.07 second supply/exhaust air unit (optional)
Via additional inputs on the controller, the volume flows of a further supply air and/or exhaust air unit can be con-
nected to the THERM-CONNECT magna. Thus, two units can be connected in parallel to one hydraulic unit. The air
volume flows of the individual units are shown separately on the display and are also output via the optional bus
protocol.
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