PROAIR MULTI-ZONE CONTROL SYSTEM
Mechanical door bypass for metal and polyurethane foam (PAL) plenums
The by-pass makes it possible to compensate for the flow of air leaving the insulated electro-galvanised sheet metal plenums.
The by-pass, made of electro-galvanised sheet metal, works by pushing excess air into the plenum.
The presence of adjustable counterweights will return the door to position.
It is applied on one of the two sides of the plenum through the supplied screws.
Always fit the supplied double-sided adhesive gasket to prevent air leakage.
Make sure the opening is facing downwards.
The counterweight is adjusted with multiple nuts screwed on the bolts.
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