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AM Series Boilers and Water Heaters User Manual
CHAPTER 10 – MAINTENANCE
10.26.1 Components and Piping
The external circulator pump, piping, parts, and low water cut-off specific to the AMR option are
designed to provide years of trouble-free service. However, periodic inspection and routine
maintenance are recommended for all hydronic systems and mechanical equipment. If any
evidence of leakage or damage is present, take preventive measures and shut down the system
immediately, then contact AERCO technical support for information about repair or replacement
of any parts or components. See Chapter 12 for a diagram and parts list of all AMR option spare
parts.
10.26.2 Buffer Tank Anode Rods
Anodes should be checked and cleaned every six months.
The AMR buffer tank supplies 25 grams of anode per square foot of tank area. Original anode
rod diameter is 3/4" (0.75"), and should be replaced if diameter is reduced by 20% to 3/5"
(0.60") diameter or less. Figure 10-14 shows a comparison of an old anode needing
replacement, and a new anode.
NEW ANODE ROD
(3/4" DIAMETER)
Figure 10-14: Buffer Tank New and Old Anode Comparison
Replacement anode rods (PN 93135-4) are available from AERCO Technical Support.
OMM-0100_E • GF-146 • 11/15/2019
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
OLD ANODE ROD NEEDING
REPLACEMENT DUE TO
EXCESSIVE DIAMETER
REDUCTION
Page 144 of 170
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