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·
For any vent lengths over 20 feet long, insulate
the vent pipe to reduce the amount of condensate
that could form in the flue gases.
·
When the venting passes through a cold area, or
location that has large amounts of air passing
over the venting, it should be insulated to prevent
condensation from forming inside the venting.
·
Vent pipe passing through walls, floors, and
ceilings, must be installed with the proper
clearances from combustible materials, and
venting manufactures fire stop equipment.
·
The venting shall not pass through any circulation
air duct or plenum.
WARNING: Provide a screen or barrier to prevent
personal injury in areas where personnel may come
into contact with hot vent pipes.
·
A drip “T” or flue box condensate port should be
used for condensate removal. When a
condensate drain is used it will be necessary to
install a trap to prevent flue gases from escaping.
Install a trap with a minimum 12” standing
water column.
·
Prior to activating the appliance, ensure that the
trap is filled with water and that the drain
terminates in accordance with local plumbing
codes.
·
Never vent into a unlined masonry or concrete
chimney.
·
Chimney or vent should extend at least 3’ (1 m)
above a roof and at least 2’ (.6 m) above any
ridge within 10’ (3 m) of the chimney. Local codes
apply.
·
Install venting so as to prevent accumulation of
condensate and have a means for condensate
removal.
·
Plastic, PVC, CPVC and HTPV special gas vents
are not approved for use with this appliance.
·
The vent must terminate at a sufficient height
above the roof to prevent blockage by expected
snowfall.
-9 -
UL Listed Cap
Required
Category I gas appliance uses
B type venting. Follow local
and/or national codes for
venting installation.
B type double wall vent
with double wall
connectors is required for
category I, serving two or
more gas appliances.
Condensate tee and trap
must be installed. Take
the condensate to a floor
drain or a condensate pump.
Steam Outlet
Exhaust venting
outlet
Note: These are guidelines only. Follow local and/ or national codes in your respective area.
Condensate
Tee
Trap
Figure # 9
Co-venting Application Using B Vent Only