AERCO AM Series Boiler User Manual - Manual (Page 37)

AM Series Boilers and Water Heaters
CHAPTER 3 – INSTALLATION
OMM-0100_0B AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 37 of 156
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• Flow Switch/LWCO: A flow switch comes with every unit and must be field installed. For
more information about the flow switch or optional LWCO, see Section 3.11.7.
• Indirect water heaters: Feld supplied. This boiler may be piped to an indirect water heater
to heat domestic hot water with the space heat transfer medium. The indirect water heater is
connected to the system supply piping. A pump controlled by the boiler’s control will regulate
the flow of water through the indirect water heater. The indirect water heater’s temperature
will be regulated by the boiler’s control. The boiler is pre-
configured to control the operation
of the DHW pump with Domestic Hot Water Prioritization programming.
CAUTION!
It is up to the installer to ensure that the minimum
system flow is
met, otherwise the flow sensors automatically stop the burner.
WARNING!
The National Standard Plumbing Code, the National Plumbing
Code of Canada and the Uniform Plumbing Code limit the
pressure of the heat transfer fluid to less than the minimum
working pressure of the potable water system up to 30 psi
maximum. Also, the heat transfer fluid must be water or other non-
toxic fluid having a toxicity of Class 1, as listed in Clinical
Toxicology of Commercial Products, 5th Edition.
• Filter: Field supplied. A filter or equivalent multipurpose strainer is recommended at the
return pipe of the boiler to remove system particles from older hydronic systems and protect
newer systems.