Page 4 of 30 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 • Phone: 800-526-0288 PR1 04/08/2014
TAG-0074_0B
Application Guide
1. MANDATORY REQUIREMENTS
The following are mandatory actions required to ensure proper piping and drainage of the AM Series
system.
CAUTION!
Local codes and authorities should be consulted prior to installation.
• AERCO requires that the boiler loop to be de-coupled from the system loop. This can be achieved
by one of the following:
o Employing primary-secondary piping.
o Installation of a hydraulic separator between the boiler and the system loop.
o Installation of a heat exchanger (for example, plate heat exchanger) between the boiler and
the system loop.
• For water heating installations, a storage tank provides the required de-coupling.
• AERCO requires cleaning of the whole system and to fit a mandatory Y-strainer on the return pipe
to the boiler, equipped with isolation valves (See Figures 11 to 18 at the end of this document).
• For boiler replacement installations, cleaning of the whole system is required before connecting
the boiler (See Section 2.3 for Flushing, Treatment, and Cleansing tips and guidelines). Failure to
clean a system will limit it from the full benefits offered by the high efficiency AM Series.
• Boiler drain valve and condensate neutralizer drain should be arranged to permit the fluids to drain
freely, by gravity, to a convenient floor drain.
• For units installed in environments likely to experience freezing temperatures, it is necessary to
ensure that the condensate line and exhaust manifold are equipped with suitable freeze
protection, such as a heat trace line or insulation.
• Relief valve must be installed vertically in the top, side, or to a valveless header connected to the
water supply outlet.
• All piping and electrical connections (i.e. service switches, conduit boxes, etc.) should be located
at a minimum of 6 inches from the boiler panels and covers.
• See Table 1 (Section 2) for sizing guidelines for the mandatory primary pump and boiler strainer.
• A discharge pipe must be used and must not have an internal cross-sectional area less than the
outlet of the relief valve.
• The discharge pipe must be installed so that there will be no danger of scalding to the boiler
attendants. See Figure 1 for a discharge pipe example of an AM Series unit.
• The relief valve point of discharge piping must have provisions for proper drainage.
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