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1.2. GAS VENT CATAGORIES
The AM Series is approved for a Category IV vent configuration as well as for sealed combustion
installations. Make provisions for combustion and ventilation air in accordance with Section 5.3, (Air
for Combustion and Ventilation) of the National Fuel Gas Code - ANSI Z223.1, or Sections 7.2, 7.3, or
7.4 of CAN/CGA B149, Installation Codes, or applicable provisions of the local building codes.
Federal Codes have categorized gas appliances by the vented flue gas pressure and temperature:
•
Category I, being a gas appliance that operates with a non-positive vent (or natural drafted vent)
connector with a flue gas pressure and temperature at least 140°F (60°C) above its dew point.
•
Category II, being a gas appliance that operates with a non-positive vent (or natural drafted vent)
connector with a flue gas pressure and temperature less than 140°F (60°C) above its dew point.
Category III, being a gas appliance that operates with a positive vent (fan forced vent) connector
•
with a flue gas pressure and temperature at least 140°F (60°C) above its dew point.
Category IV, being a gas appliance that operates with a positive vent (fan forced vent) connector
•
with a flue gas pressure and temperature less than 140°F (60°C) above its dew point.
•
Direct Vent, a gas appliance is constructed and installed so that all air for combustion is derived
directly from the outdoors and all flue gases are discharged to the outdoors.
1.3. CERTIFIED VENTING MATERIALS FOR FLUE PIPE SYSTEMS
Acceptable materials and manufacturers for flue vent pipe systems are listed in Sections 1.3.1 to 1.3.4
(Option #1 to Option #4).
The Vent Pipe Systems in the following section are used for venting gas burning Category IV
appliances. Do not use these vent pipe systems for venting appliances burning fuels such as wood,
coal, oil or kerosene.
Maintain clearances from combustible construction for boiler, vent connector, and steam and hot-
water pipes.
Do not use these vent pipe systems for incinerators of any kind.
Do not vent AM Series systems using the same vent piping as being used for other boiler types, such
as, but not limited to, Benchmark or Modulex boiler systems.
1.3.1. OPTION 1: AL29-4C Stainless Steel
•
Security Chimneys International, Secure Seal, SS, SSD, and SSID (available through AERCO)
•
Flex-L International Inc., StaR 34 Vent
•
Heat-Fab Inc., Saf-T Vent
•
Protech System Inc., Fas N Seal Vent
•
Metal-Fab Inc., Corr/Guard Vent
•
Z-Flex Z-Vent
1.3.2. OPTION 2: VP1738A Stainless Steel
•
Van-Packer Company, Inc., Model CS Special Gas Vent
1.3.3. OPTION 3: Polypropylene
•
Centrotherm ECO Systems, InnoFlue Single Wall Commercial
•
DuraVent, Polypro Commercial
PR1 04/08/2014
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 • Phone: 800-526-0288
AM Series Venting
Application Guide
GF-146
GF-146-V
TAG-0075_0B
TAG-0075_0B
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