Overflow Connection - Baltimore Aircoil Company VFL Series Operating And Maintenance Instructions Manual

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Full stainless steel units and units protected by the Baltibond hybrid coating do not require passivation.
An exception to this are units with a galvanized steel coil bundle which do still require the proper
passivation procedure as described here in this section.
In case you can't keep the pH below 8.2, a secondary approach is to conduct a chemical passivation using
inorganic phosphate or film-forming passivation agents. Consult your water treatment specialist for specific
recommendation.

Overflow connection

A slight loss of water through the overflow on forced draft units is normal when the fans are in operation, since the
unit is in overpressure and some saturated air will be blown out to the unit, carrying several droplets of water.
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3 Water Care
3 Water Care
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