AM Series Boilers and Water Heaters
CHAPTER 10 – MAINTENANCE
OMM-0100_0D
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
Page
133
of
154
GF-146
Ph.: 800-526-0288
03/28/16
10.26 AM Rapid Recovery (AMR) Option Maintenance
Refer to Chapter 10 for all general maintenance procedures applicable to the AM Series of
water heaters used in the AMR option.
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.
Figure 10-14: Buffer Tank New and Old Anode Comparison
Replacement anode rods (PN
93135-4
) are available from AERCO Technical Support.
NEW
ANODE ROD
(3/4” DIAMETER)
OLD
ANODE ROD NEEDING
REPLACEMENT DUE TO
EXCESSIVE DIAMETER
REDUCTION
