Nortec GS 100 Installation, User & Maintenance Manual page 13

B type double wall vent
with double wall
connectors is required for
category I, serving two or
more gas appliances.
Exhaust venting
outlet
Steam Outlet
Note: These are guidelines only. Follow local and/ or national codes in your respective area.
· 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.
Figure # 9
Co-venting Application Using B Vent Only
UL Listed Cap
Required
Condensate
Tee
Trap
-9 -
Condensate tee and trap
must be installed. Take
the condensate to a floor
drain or a condensate pump.
Category I gas appliance uses
B type venting. Follow local
and/or national codes for
venting installation.
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.