General Description And Models; Operating Principle - Carel humiFog direct UA040DD101 User Manual

1. GENERAL DESCRIPTION AND MODELS

1.2.1 Functional diagram
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Key
1 Mains water line
2 Reverse osmosis system
3 Demineralised water line
4 Expansion vessel
5 humiFog Direct cabinet
6 High pressure water hoses (70 bars)

1.2 Operating principle

System operation is based on a request signal from a probe (temperature
or humidity) or external controller. When operation is enabled (remote
on/off ) and at the same time there is a humidification or cooling request
signal, the system opens the fill solenoid valve and activates the pump,
which pumps the water at high pressure (70 bars). After having also
opened the outlet solenoid valve, the initial stage of operation begins,
involving washing and filling the line, after which, when the line is filled
and pressurised, the nozzles will start spraying water.
Modulation is available in PWM mode (pulse width modulation): the
controller alternates a time (set on the display) in which the outlet
solenoid valves are operation, thus atomising the water, with period in
which the outlet valves are closed and the bypass valve is open, thus
interrupting atomisation into the room.
The set point is managed directly by the electronic controller using a
proportional band (P+I) or an offset when reaching the set point.
On reaching the set point, the system stops and enters standby mode,
restarting when there is a new request. For this reason, the system should
be powered on at all times.
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Fig. 1.a
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humiFog Direct blower units
Water drain point
On-off ball valve
Power supply (230V 50 Hz or 120V 60 Hz)
Electrical connection from cabinet to the blowers
Mechanical feedwater filter
"humiFog direct" +0300073EN rel. 1.2 - 02.05.2019
ENG
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