AERCO AM Series Boiler User Manual - Manual (Page 64)

AM Series Boilers and Water Heaters
CHAPTER 3 – INSTALLATION
Page 64 of 156 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0100_0B
PRI - 07/14/14
Ph.: 800-526-0288
GF-146
Polypropylene and stainless steel pipe may require an adapter (not provided) to transition
between the air inlet connection on the appliance and the air inlet pipe. Contact the vent
manufacturer for these shorter pieces.
The use of insulated material for the combustion air inlet pipe is recommended in cold climates
to prevent the condensation of airborne moisture in the incoming combustion air.
3.16.5.1 Sealing of PVC, CPVC or ABS Air Inlet Pipe
The PVC, CPVC, or ABS air inlet pipe should be cleaned and sealed with the pipe
manufacturer’s recommended solvents and standard commercial pipe cement for the material
used. The PVC, CPVC or ABS air inlet pipe should use a silicone sealant to ensure a proper
seal at the appliance connection and the air inlet cap connection. ABS should use a screw type
clamp to seal the pipe to the appliance air inlet and the air inlet cap. Proper sealing of the air
inlet pipe ensures that combustion air will be free of contaminants and supplied in proper
volume.
When a sidewall or vertical rooftop combustion air supply system is disconnected for any
reason, the air inlet pipe must be resealed to ensure that combustion air will be free of
contaminants and supplied in proper volume.
3.16.5.2 PVC/CPVC Vent Piping Materials
Installation must comply with local requirements and with the National Fuel Gas Code, ANSI
Z223.1 for U.S. installations or CSA B149.1 for Canadian installations.
For installation in Canada, vent pipe system must be certified to ULC-S636 (see Table 10-1).
Installation of a PVC/CPVC vent system should adhere to the PVC/CPVC vent manufacturer’s
installation instructions supplied with the vent system.
WARNING!
Do not insulate PVC/CPVC exhaust pipes nor install into an
enclosure, closet, alcove or any other obstruction thereby
preventing the cooling of the exhaust pipe.