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AHU Resistors Humidifier - REH
7 Humidifier installation
The hydraulic part is simply placed inside the compartment of humidification of the AHU on the condensate
drain pan immediately downstream of the cold battery, with the control group placed on the sides of the AHU
where inspection is easier.
If the AHU is subjected to shock and transport, secure it with screws.
During the humidifier installation carefully follows these points:
•
The opening and the closing of the power electronic control box takes place through 4 screws
•
Since water is discharged at a temperature of 100 ° C, it is necessary to connect the drain with a plastic
tube of greater length possible (at least 1 meter)
The model listed above are only for operation in OEM application within AHU
•
•
As above said the humidifier of these families cannot be installed in direct contact with people and
objects
The kettle contains boiling water. BEFORE TOUCHING THE HOUSING MAKE SURE
THAT THE TEMPERATURE IS DROPPED.
The resistances cables must be arranged and fixed so that they not contact any
part of the kettle, being at an elevated temperature (100 ° C)
THE OPERATION OF THE HUMIDIFIER MUST ALWAYS BE SUBJECT TO THE WORKING
OF THE AHU FAN AND ONLY IF INSTALLED INTO A AHU
7.1 Water connection
The humidifier must be connected to the water supply through a solenoid valve driven by the control unit. Such
a solenoid valve is connected to the hydraulic unit through a flexible tube that can withstand pressure shocks,
which allows, moreover, a rapid disassembly for inspection and cleaning of the solenoid filter. The solenoid
valve has female fitting ¾-inch.
We recommend the use of totally or partially demineralized water, in order to significantly reduce the mainte-
nance and cleaning of limescale deposits, however the use of drinking water and softened water is allowed,
according to the data in paragraph 6 - Characteristics
Input pressure must be between 2 and 10 bars.
7.2 Drain and overflow hydraulic connection
The humidifier is equipped with an automatic drain unit (managed by
the control unit). The drain unit has an outlet pipe with an external
diameter of 42mm. The drain must be brought outside the AHU with a
tube that can support 90 ° C of water drain. This connection prevents
the condensate collection tank from being clogged with limestone
discarded by the humidifier during the tank washing and production
phases,. This drain pipe must be equipped with a slope towards the
outside and provided with a siphon (outside the AHU) to avoid the re-
entry of odors into the AHU.
An overflow fitting is present on the drain side of the kettle. The overflow drain (external diameter 25mm)
must be brought outside the AHU and connected to the drain pipe before the siphon. If the connection is not
possible, the overflow drain ust be equipped with a siphon.
Elsteam S.r.l - via E. Fermi, 496 - 21042 Caronno Pertusella (va) - Tel.+39 02 9659890 - Fax +39 02 96457007
21.2.EN
E-mail: info@elsteam.it Web: http://www.elsteam.com
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