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During normal operation of the unit, the rate of the air flow treated by the fans is sufficient to ensure that no hazardous mixtures can
form inside the machine pursuant to the EN 378 standard as indicated in the table in chapter 2.2.1.2.
Units with R32 refrigerant charge are supplied as standard with delivery and return air dampers belonging to class CL4 according to
the EN1751:2014 standard, and which close when the unit is not in operation.
In order to facilitate the disposal of refrigerant gas leaks during shutdown, the delivery damper is equipped with a reverse-
functioning vane, which must necessarily be excluded from the ducting.
Unit Status: ON
•
External air damper (optional): open
•
Ejection damper (optional): open
•
Return damper (standard): open
•
Delivery damper (standard): open
•
Reverse vane (gas disposal): closed
•
Ventilation: ON
•
Mr. Slim: ON
Units operating with R32 can only be installed outdoors.
It is strictly forbidden to install WIZARDX R32 air handling units in machine rooms or any other type of indoor space.
CAUTION:
If there is a loss of refrigerant, call technical assistance before restarting the machine.
CAUTION:
Avoid having the ducts putting weight on the machine or any components of the same (frames, panels,
pipes, etc...).
Unit Status: OFF
•
External air damper (optional): closed
•
Ejection damper (optional): closed
•
Return damper (standard): closed
•
Delivery damper (standard): closed
•
Reverse vane (gas disposal): open
•
Ventilation: OFF
•
Mr. Slim: OFF
IUM_WIZARDX_03_22_EN
ducting
return
ducting
delivery
reverse-functioning vane
excluded from the
ducting
53
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