Installation
The vent should be installed head up in vertical position, on the air separator, on manifolds,
on riser pipes and generally in parts of the system where a concentration of air pockets is to
be expected. Check valve on 5023 series should be installed prior to air vent.
Service Instructions
There is no service required for the automatic air vent. A hygroscopic vent cap should be replaced
CAUTION:
Corrosion or leakage can cause damage or injury.
Periodically inspect for signs of corrosion or leakage. If corrosion or
leakage is noted, the vent must be replaced. Failure to follow these
instructions could result in property damage and/or personal injury.
CAUTION:
Uncontrolled venting of water can occur with the automatic
air vent if dirt, scale, pipe joint compound or any other foreign materials
becomes trapped in the operating mechanism. Keep vent cap closed
these instructions could result in property damage and/or personal injury.
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Installation Tip
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Caleffi North America, Inc.
3883 West Milwaukee Road
Milwaukee, WI 53208
T: 414.238.2360 F: 414.238.2366
7-19-18
Operating instructions
The automatic air vent is supplied complete with a safety hygroscopic cap that automatically closes
the air discharge in case of contact with water. The hygroscopic cap does not provide an airtight seal,
even when closed. If pressure testing is required, replace the hygroscopic cap with a plastic cap
(Caleffi code R56214) or install an isolation valve beneath the vent.
For normal automatic venting, this cap should be screwed down finger tight.
every 3 years to assure proper functionality. The natural fiber wafers biodegrade over time.