Mounting And Set-Up - Vents PA W Series User's Operation Manual

Mount the unit in such a way to provide a sufficient access to the unit for maintenance and
servicing works. Air flow direction in the system must match the pointer direction on the unit cover.
Suspend the unit to the ceiling on the threaded rod that is fixed inside the dowel or fix it rigidly
on a horizontal surface (fig. 11).
Integrate the unit into the ventilation system by connecting it to rectangular or round air ducts.
For connection to round air ducts, use matching duct connectors (available upon separate order).
Example 1
Washer
Nut
Nut
Washer
Antivibration rubber
To attain the best performance of the unit while mounting connect a straight 1 m duct section on
both sides of the unit.
If the unit is installed at the air duct inlet or outlet it shall be equipped with a grille with the mesh
width up to 12.5 mm or any other protecting device to prevent free access to the unit fans.
To increase the unit efficiency connect the water heating coils on counter-flow basis (fig. 12).
All the stated calculations are valid for counter-flow connection of the water heater. The water
heater connected on counter-flow basis has lower capacity but higher frost-resistance.
) Direct ow connection
V43EN-03.indd 15

MOUNTING AND SET-UP

Example 2
Nut
Washer
Antivibration rubber
Nut and
counter-nut
Fig. 11. Unit mounting
b) Counter- ow connection
Fig. 12. Water heater connection
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