AM Series Boiler Heat Exchanger Maintenance & Replacement
Technical Instruction Document
Removing the Heat Exchanger - Continued
Figure 3-12: Retain Flow Meter O-Ring
19. If the heat exchanger is being replaced with a new one, use the 46mm wrench to loosen the
nut attaching the water return piping to the old heat exchanger, as indicated in Figure 3-13 and
install it onto the new heat exchanger.
Figure 3-13: Removing Water Return Pipe & Flow Meter from Old Heat Exchanger
20. Remove the flue gasket, as shown in Figure 3-14, and replace if necessary.
21. Remove the lower smaller flue gasket, as shown in Figure 3-14, and replace if necessary.
Figure 3-14: Removing the Two Gaskets from the Flue
REMOVE FLUE
CONDENSATE DRAIN
STEP 19: USE 46mm
WRENCH TO REMOVE,
THEN RECONNECT TO
NEW HEAT EXCHANGER.
NOTE!
This instruction only
applies if the heat
exchanger is being
replaced with a new
Page 18 of 36 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 TID-0137_0A
02/02/2015 Ph.: 800-526-0288
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