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www.cal .com
38521.02
High Capacity Automatic Air Vent High Capacity Automatic Air Vent with check valve
Copyright 2018 Caleffi
©
Function
or pipes in sealed heating systems. Check valve on 5023 series allows an
easy replacement of air vent without purging the system.
These items are designed for use in closed hydronic systems. Do not use
in plumbing applications. These items do not meet the low-lead
plumbing standards of U.S. and Canada.
Technical Characteristics
Connection: 1/2” NPT male
Materials: Body Brass
Maximum working pressure: hot water 150 psi (10 bar)
Maximum venting pressure: 60 psig (4 bar)
Maximum working temperature: 250˚ F (120˚ C)
Float PP
Seals peroxide-cured EPDM
SAFETY INSTRUCTION
This safety alert symbol will be used in this manual to draw attention to safety related
instructions. When used, the safety alert symbol means
ATTENTION: BECOME ALERT!
YOUR SAFETY IS INVOLVED! FAILURE TO FOLLOW THESE INSTRUCTIONS MAY
RESULT IN A SAFETY HAZARD.
5022-5023 Series
WARNING: This product can expose you to chemicals including lead, which is
known to the State of California to cause cancer and birth defects or other
reproductive harm. For more information go to www.P65Warnings.ca.gov.
CAUTION: All work must be performed by personnel trained in the
proper application, installation, and maintenance of systems in accordance
with all applicable codes and or
CAUTION: Over-tightening and breakage can occur with the use of T
dinances.
®
pipe joint compounds. T®provides lubricity so that care must be
exercised not to over-tighten joints. Failure to follow these instructions
could result in property damage and/or personal injury.
WARNING: System are under pressure and temperatur e can be
hazardous. Be sure the pressure has been reduced to zero and the
system temperature is below 100°F (38°C). Failure to follow these
instructions could r
esult in property damage and/or personal injury.
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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.
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.
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
(Cale code R56214) or install an isolation valve beneath the vent.
For normal automatic venting, this cap should be screwed down nger tight.
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 r
eplaced. Failure to follow these
instructions could result in property damage and/or personal injury.
Service Instructions
There is no service required for the automatic air vent. A hygroscopic vent cap should be replaced
every 3 years to assure proper functionality. The natural ber wafers biodegrade over time.
Scan to view
·
AIR VENTS
Installation Tip
Caleffi North America, Inc.
3883 West Milwaukee Road
Milwaukee, WI 53208
T: 414.238.2360 F: 414.238.2366
7-19-18
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