CALEFFI 501 Series User manual

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
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 ordinances.
CAUTION: Over-tightening and breakage can occur with the use of T ®
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.
Technical Characteristics
Description
Automatic Air Vent
38454.02
501 Series
www.cal .com
pipes where large quantities of air is required to be released from the
system.
This item is designed for use in closed hydronic systems. Do not use in
plumbing applications. This item does not meet the low-lead plumbing
standards of U.S. and Canada.
Connection: Inlet 3/4” NPT female
Exhaust 3/8” straight female
Maximum working pressure: 230 psig (16 bar)
Maximum venting pressure: 90 psig (6 bar)
Maximum venting rate: 8 scfm (225 Nl/min)
Working temperature range: -4 to 250˚F (-20 to 120˚C)
Body material: Brass
©Copyright 2018 Caleffi
ATTENTION: BECOME ALERT!
YOUR SAFETY IS INVOLVED! FAILURE TO FOLLOW THESE INSTRUCTIONS MAY
RESULT IN A SAFETY HAZARD.
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.

Installation
The vent is installed in the vertical position, on distribution manifolds in central boiler
application, on riser pipes and generally in parts of the system where a large concentration of
air pockets is to be expected.
Service Instructions
The seal seat operating mechanism is protected by a ne mesh strainer. If dirt, scale, pipe joint
compound or any other foreign materials becomes trapped in strainer, it may require cleaning.
Be sure the pressure has been reduced to zero and the system temperature is below 100ºF
(38ºC) before disassembly for cleaning. Failure to follow these instructions could result in
property damage and/or personal injury. A large O-Ring is tted between the cover and body
and between the venting mechanism and cover.
CAUTION: Corrosion or leakage can cause damage or injury.
Periodically inspect for signs of corrosion or leakage. If corrosion or
leakage is note, the vent must be replaced. Failure to follow these
instructions could result in property damage and/or personal injury.
CAUTION: System uids are under pressure or temperature can be
hazardous. Be sure the pressure has been reduced to zero and the
system temperature is below 100ºF (38ºC). 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. Failure to follow these
instructions could result in property damage and/or personal injury.
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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Installation Tip
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AIR VENTS