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Enclosure G - Ultrasonic Humidifier
G - 1 Liebert
®
PDX, EconoPhase Version - UM - 265133 - 29.08.2019
G. 1 - Ultrasonic Humidifier
Ultrasonic Humidifier operates on the principle of ultrasonic nebulization. A 48 VAC voltage is rectified on an oscillator circuit and
transformed into a high frequency signal of 1.65MHz.
This signal is transmitted to a transducer installed in the water which then transforms the signal into high frequency automatic vibrations.
The built-in transducers - also called ”thickness transducers” - change their thickness 1.65 million times per second in accordance with
the signal of 1.65 MHz applied.
Ultrasonic Humidifier can work only with demineralized water with conductivity < 5 μS/cm(up to 20 μS/cm for a short time).
If demineralized water is not available, provide demineralizer (not supplied).
Ultrasonic Humidifier is controlled by a microprocessor-based electronic controller.
It includes control board, driver board and remote display board, all of them housed inside the humidifier electrical panel, located behind
Lieber
t®
PDX door.
The functioning logic of the Ultrasonic Humidifier is PROPORTIONAL. The controller comes complete with DSP card which allows to
display and modify all the parameters of the humidifier as well as to detect any abnormal condition via alarm messages.
For safety reason and in order to obtain optimum performance from the humidifier, this manual and the HSU08RM000 manual must be
read carefully
Tab. 1 - Ultrasonic Humidifier specifications
G. 2 - Installation
The Ultrasonic humidifier is supplied mounted within one base module 400 mm height.
The base module with humidifier is supplied stand alone and it will be installed and connected with the air conditioner on field.
The module can be installed on the raised floor, see Fig. 1, or in the raised floor, see Fig. 2 (front and bottom module opened, sides and
back module closed).
When installed in the raised floor it is necessary to remove the module frontal panel to have also frontal air delivery.
A base frame, available on request, is required to support ultrasonic humidifier module.
Ensure 1 meter of free space (without obstacles) on ultrasonic humidifier module outlet.
For Extended Height unit, connect the fan module above the humidifier module and the coil module above the fan module.
Connect humidifier electrical cable, coming from the air conditioner, to the ultrasonic humidifier.
Connect water supply, water drain, safety overflow and humidifier drain pan water drain.
The relevant piping connections shall be in material resistant to fully demineralized water.
Refer to HSU08RM000 manual for details.
Fig. 1 - Ultrasonic humidifier module on the raised floor, frontal and lateral views
Humidifier Model
POWER SUPPLIES
(V AC)
SETTINGS
[kg/h]
NUMBER OF
TRANSDUCERS
ABSORBED POWER
[W]
HSU08RM000 48 0…6.0 16 670