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Principle of the installation of the ducts
Solution 1
each fan has its own duct
1 Fan motor access hatches (provide a 700 x 700 mm hatch) for each single and dual duct
Rules for a correct ductwork
-
Each duct must serve a maximum of 2 fans – DO NOT
EXCEED this limit
-
In case of multiple fans in the same duct, they must belong
to the same refrigerant circuit and to the same V-shape
system – DO NOT MIX refrigerant circuit or V-shape
system in the same duct
IMPORTANT: The unit duct connection must not create any
mechanical constraint on the fan support deck.
The fan housings and the fan protection grilles must always
remain in their position inside the ducts.
Use bellows or flexible sleeves for the duct connection.
48
Solution 2
2 fans can used the same duct
At the outlet of each duct, provide an access hatch with a
minimum size of 700 x 700 mm to allow motor replacement
and disassembly of the fan impeller.
Fan motor electrical protection
In case of a locked rotor or an overload, the motors of each
circuit are electrically protected by the circuit variable frequency
drive.
Each drive follows a variable current characteristic, based on
the frequency from 10 to 60 Hz and the number of controlled
fans.
If a fan is not operating correctly, the drive automatically detects
the problem and sends an alert to the Touch Pilot display.
Please refer to the 30RQM/RQP Touch Pilot Control manual
for the list of specific alarms for this option.
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