4
LISTING
Listed to ULC S636
Rated Class IIA, IIB, and IIC vent system
maximum temperature 230°F (110 °C)
maximum positive pressure 15 in-w.c.
Massachusetts Plumbers Board,
# G1-0811-42.
APPLICATION
ANSI Category II and IV gas-burning
appliances.
Appliances specically tested and listed to
use M&G DuraVent PolyPro Venting
PERMITS
Check with your local Building Ocial, Fire
Ocial, or other authority having jurisdiction
regarding permits, restrictions, and
installation inspections in your area.
GENERAL INSTALLATION NOTES
Read these installation instructions before
begin. You must use only authorized M&G
DuraVent PolyPro vent parts, or other parts
specically authorized in these instructions
and/or listed by the appliance manufacturer
in order to maintain a safe, approved system.
• Do not ll any air space clearance (Table
1) with insulation.
• Do not mix parts or try to match with
other products or use improvised
solutions.
• Do not install damaged or modied
parts.
• Use soapy water to lubricate gaskets
• Never use Petroleum base lubricants
If these directions and those of the appliance
manufacturer dier, follow the more
conservative requirements. If you have any
questions, contact either your dealer or M&G
DuraVent directly. A venting system must
not be routed into, through, or within any
other vent, such as an existing masonry or
factory-built chimney ue, unless that vent
or chimney is not being used to vent another
appliance and is only used as a conduit for
the gas-vent system. Plastic venting systems
shall not pass through re rated separations
without approved restopping.
Refer to the appliance manufacturer's
instructions for maximum and minimum
vent lengths permitted with your specic
appliance model. This information should
include guidance on the maximum number
of elbows and related pressure-drops. The
total vent length from the appliance to
the termination shall not be greater than
specied by the appliance manufacturer.
If specic guidance is not oered by the
appliance manufacturer as to Equivalent
Vent Lengths (EVL) for vent components, the
general guidelines in Table 2 can be used-
Table 1
Clearance to Combustibles
VENT PIPE ORIENTATION
Single Wall Vertical Horizontal
Up to 190°F 0" 0"
Up to 230°F 0" ¼" (6mm) all around
Concentric
Up to 230°F 0" 0"
IMPORTANT
To prevent possible recirculation of ue
gases, the installer must consider the
eects of prevailing wind conditions,
eddy zones, nearby buildings,
obstructions, or other obstacles such as
shrubs when planning exhaust and air
intake locations. M&G DuraVent can not
be held responsible for poor appliance
performance or damage to buildings
due to an incorrect installation. The
minimum clearances detailed within our
instructions may not be adequate in some
circumstances depending on the specics
of the installation. For this reason we
always recommend vertical venting.
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