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INSTALLATION OPERATIONS AND MAINTENANCE MANUAL - RXC/Hi SERIES
12.10 How to vent the unit
For a proper functioning of the system, it is essential to remove the air from the hydraulic circuit.
To vent the coil, proceed as follows:
•
unscrew the fastening screws of the dedicated panel of the external box;
•
remove the panel;
•
use the vent valve located on the internal manifold of the coil.
After venting the unit, close the panel with the screws.
12.11 Connecting the unit to air ducts
GENERAL RULES
For a correct installation of the ductwork it is recommended to:
• design the duct so that the air speed never exceeds 4-5 m/s, for the purpose of noise containment;
• provide suitable brackets to support the ducting to prevent their weight from bearing on the unit;
• always use a flexible joint between the unit and the ductwork;
• provide an electrical earth cable to bridge the flexible joint, to ensure the duct and the unit are electrically equipotential;
• before bends and branches, provide a straight duct with a length equal to at least 2.5 times the shorter side (or diameter)
of the duct to avoid drops in fan performance.
DUCT
FLEXIBLE JOINT
Fixing of air ducts on CIRCULAR connections
on supply and return air
Fixing of air ducts on RECTANGULAR connections
on supply and return air
DUCT
FLEXIBLE JOINT
VENT VALVE
