Water Piping - Watts AERCO AM Series Quick Installation Manual

Quick Installation Guide
AM Series

WATER PIPING:

Boiler applications:
•
Use primary/secondary piping configuration.
•
Common pipe diameter must be sized for less than 4.0 ft/sec; common pipe length must
be 3 to 5 times its diameter.
•
Single unit application - relocate supply temperature sensor from boiler header to system
piping.
•
Multiple unit application - install Cascade header temperature sensor in the system piping
(see AERCO Cascade Sequencer user manual (GF-146-CS) for installation details).
QIG-0001_0A •
POTABLE APPLICATIONS
MINIMUM FLOW
10 grains/gal max
200ppm TDS max
AM 199 11 gpm
AM 250 12 gpm
AM 399 22 gpm
AM 500 24 gpm
AM 750 36 gpm
AM 1000 48 gpm
11/1/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
Water heating applications:
•
A storage tank must be used. See below for basic
piping configurations.
•
An anti-scald valve must be used and installed in
accordance with local codes.
Ensure that the minimum system flow is met
per chart and table below, otherwise the flow
sensors will automatically stop the burner.
AM SERIES PRESSURE DROP
A: AM 199/250; Min flow (high fire) =11 gpm/ 12 gpm
B: AM 399; Min flow (high fire) =22 gpm
C: AM 500; Min flow (high fire) =24 gpm
D: AM 750; Min flow (high fire) =36 gpm
E: AM 1000; Min flow (high fire) =48 gpm
POTABLE APPLICATIONS
MINIMUM FLOW
18 grains/gal max
200ppm TDS max
18 gpm
18 gpm
37 gpm
37 gpm
60 gpm
75 gpm
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