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Water pockets in the supply line, caused by low points, will provide wet steam to the coil possibly causing
coil damage. ALL horizontal runs of steam supply piping should be pitched 1/4-inch every foot back
towards the steam supply header causing any condensate in the line to drain to the header. Install a bypass
trap in any low point to eliminate wet steam.
a. Steam Damper Air System connections
The pneumatic (piston) damper system requires a clean, dry, regulated external supply of compressed
air. The air connection is made to the system soleniod valve which is located on the rear electric
service box.
1) Air Requirements
a) There is no air requirement for dryers with the electromechanical damper option.
COMPRESSED AIR SUPPLY AIR PRESSURE
Normal 80 psi
Minimum Supply 70 psi
Maximum Supply 90 psi
2) Air Connection
Air connection to system --- N.P.T.