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Installer's
Guide
HORIZONTAL
VENTING
NOTE:
Vent termination
kit BAYAIR3OAVENT*
or BAYVENT200*
may be used instead
of the horizontal
and vertical
termination
options
shown
in the following
figures.
When the vent pipe is exposed to temperatures below freezing, i.e., when it passes through unheated spaces, etc., the pipe
must be insulated with 1/2 inch (22.7 mm) thick Armaflex-type insulation or equal. If the space is heated sufficiently to
prevent freezing, then the insulation would not be required. If domestic water pipes are not protected from freezing then it is
assumed the space meets the condition of a heated space.
HORIZONTAL
VENTING
THROUGH
WALL
These
furnaces
may
be installed
as direct
vent
(as
shipped)
or as nondirect
vent.
Installation
must
con-
form
to national,
state,
and
local
codes.
The vent
& inlet
terminals
must
be located
at least
12"
minimum
above
normally
expected
snow
accumulation
level.
Avoid
areas
where
staining
or condensate
drippage
may
be a
problem.
Location
of the vent/wind
terminal
shouM
be chosen
to meet
the
requirements
of Figure
26 fl)r either
direct
or non-direct
vent
applications.
(4 req.)
MAINTAIN
12" (18" FOR CANADA)
MINIMUM
"
'-.
BAYVENT200B
"" * -
PITCH
- Venting
through
the
wall must
maintain
1/4" per
fl)ot pitched
upward
to insure
that
condensate
drains
back
to
the fllrnace.
FLUE
GAS
DEGRADATION
- The moisture
content
of the
title gas may
have
a detrimental
efl'ect on some
building
materials.
This
can be avoided
by using
the roof or chimney
venting
option.
When
wall
venting
is used
on any surlhce
that
can be affected
by this
moisture,
it is recommended
that
a
corrosion
resistant
shield
(24 inches
square)
be used
behind
the vent
terminal.
This
shieM
can be wood,
plastic,
sheet
metal,
etc. Also,
silicone
caulk
all cracks,
seams
and joints
within
3 feet of the vent
terminal.
COMBUSTIBLE
MATERIAL
WALL
A minimum
clearance
of 1" to combustible
materials
must
be
maintained
when
using
single
wall
stainless
steel
venting.
See Figure
30 above.
ShieM
material
to be a minimum
of 24 gauge
stainless
or
ahlminized
sheet
metal.
Minimum
dimensions
are
12"x12".
Shield
must
be fastened
to both
inside
and
outside
of wall.
@
BAYAIR30AVENTA
(Sidewall)
Use screws
or anchor
type
fasteners
suited
to the outside
or
inside
wall
surfaces.
NONCOMBUSTIBLE
MATERIAL
WALL
The hole through
the wall must
be large
enough
to maintain
pitch
of vent
and
properly
seal.
Use cement
mortar
seal on inside
and
outside
of wall.
See Figure
31.
®
COUPLING
( PLASTIC
VEN TING
;IN. MII
1 ( OJOI r ,
/
1" CLEARANCE
( AIR SPACE
)
I
PVC WALL
MOUNT FLANGE
{OPTIONAL)
APPROVED
TERMINATION
12" MIN. ABOVE
NORMALLY
EXPECTED
SNOW
ACCUMULATION
VENTINGTHROUGH COMBUSTIBLE WALLS
Pitch-- 1/4 Inch Per Ft
CLEARANCE
( 0" ACCEPTABLE
FOR PVC VENT PIPE )
( 1" ACCEPTABLE
FOR TYPE 29-4C STAINLESS
STEEL VENT PIPE )
18
18-CD19D6-27
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