User Guide
Function
The hydraulic separator is a device which makes the primary and
secondary circuits connected to it independent, and can be
used on hot or chilled water systems.
The separator is supplied with an air-vent and check valve
assembly to permit automatic discharge of the air in the circuits,
and a drain valve for removing any impurities deposited in the
bottom of the unit.
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.
Product range
Series 548 Sizes:
1”, 1 1/4”, 1 1/2”, 2” NPT female union connections
1”, 1 1/4”, 1 1/2", 2" sweat union connections
1”, 1 1/4”, 1 1/2", 2" press union connections
2”- 4” flanged connections ANSI 150 CLASS
Series NA548 Sizes:
2”-6” flanged connections ANSI 150 CLASS (ASME)
8”-14” flanged connections ANSI 150 CLASS (ASME), with floor supports
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.
CAUTION: All work must be performed by qualified personnel trained in the
proper application, installation, and maintenance of systems in accordance
with all applicable codes and ordinances.
CAUTION: If the hydronic separator is not installed, commissioned and
maintained properly, according to the instructions contained in this
manual, it may not operate correctly and may endanger the user.
CAUTION: Make sure that all the connecting pipework is water tight.
CAUTION: When making the water connections, make sure that the
hydronic separator connecting pipework is not mechanically over-
stressed. Over time this could cause breakages, with consequent water
losses which, in turn, could cause harm to property and/or people.
CAUTION: Water temperatures higher than 100°F (38°C) can be
dangerous. During the installation, commissioning and maintenance of the
hydronic separator, take the necessary precautions to ensure that such
temperatures do not endanger people.
Hydro Separator
38505.05
www.caleffi.com
CALEFFI
548 Series
© Copyright 2018 Caleffi
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.




