12
note: r
equIreMent
Does
not
aPPlY
to
tHe
coMBustIon
aIr
PIPe
.
As an alternative to PVC pipe, primer, solvent cement, and
fittings, ABS materials which are in compliance with the
following specifications may be used. Two-or-three-inch
ABS Schedule 40 pipe must meet ASTM D1527 and, if
used in Canada, must be CSA listed. Solvent cement for
ABS to ABS joints must meet ASTM D2235 and, if used
in Canada, must be CSA listed. The solvent cement for
the PVC to ABS transition joint must meet ASTM D3138.
Fittings must be DWV type fittings meeting ASTM D2661
and ASTM D3311 and, if used in Canada, must be CSA
listed. Carefully follow the manufacturers’ instructions for
cutting, cleaning, and solvent cementing PVC and/or ABS.
All 90° elbows must be medium radius (1/4 bend DWV) or
long radius (Long sweep 1/4 bend DWV) types conforming
to ASTM D3311. A medium radius (1/4 bend DWV) elbow
measures 3 1/16” minimum from the plane of one opening
to the center line of the other opening for 2” diameter pipe,
and 4 9/16” minimum for 3” pipe.
P
roPer
V
ent
/f
lue
anD
c
oMBustIon
a
Ir
P
IPIng
P
ractIces
Adhere to these instructions to ensure safe and proper
furnace performance. The length, diameter, and number
of elbows of the vent/flue pipe and combustion air pipe
(when applicable) affects the performance of the furnace
and must be carefully sized. All piping must be installed in
accordance with local codes and these instructions.
WARNING
t
o
aVoID
BoDIlY
InjurY
,
fIre
or
exPlosIon
,
solVent
ceMents
Must
Be
kePt
awaY
froM
all
IgnItIon
sources
(
I
.
e
.,
sParks
,
oPen
flaMes
,
anD
excessIVe
Heat
)
as
tHeY
are
coMBustIBle
lIquIDs
. a
VoID
BreatHIng
ceMent
VaPors
or
contact
wItH
skIn
anD
/
or
eYes
.
PREFERRED
f
Igure
4
It is the responsibility of the installer to follow the
manufacturers’ recommendations and to verify that all vent/
flue piping and connectors are compatible with furnace flue
products. Additionally, it is the responsibility of the installer
to ensure that all piping and connections possess adequate
structural integrity and support to prevent flue pipe
separation, shifting, or sagging during furnace operation.
WARNING
u
Pon
coMPletIon
of
tHe
furnace
InstallatIon
,
carefullY
InsPect
tHe
entIre
flue
sYsteM
BotH
InsIDe
anD
outsIDe
of
tHe
furnace
to
assure
It
Is
ProPerlY
sealeD
. l
eaks
In
tHe
flue
sYsteM
can
result
In
serIous
Personal
InjurY
or
DeatH
Due
to
exPosure
to
flue
ProDucts
,
IncluDIng
carBon
MonoxIDe
.
WARNING
f
aIlure
to
follow
tHese
InstructIons
can
result
In
BoDIlY
InjurY
or
DeatH
. c
arefullY
reaD
anD
follow
all
InstructIons
gIVen
In
tHIs
sectIon
.
D
ual
c
ertIfIcatIon
: n
on
-D
Irect
/D
Irect
V
ent
This furnace is dual certified and may be installed as a
non-direct vent (single pipe) or direct vent (dual pipe)
appliance. A
non-direct vent
installation requires only a
vent/flue pipe, while a
direct vent
installation requires both
a vent/flue pipe and a combustion air intake pipe. Refer
to the appropriate section for details concerning piping
size, length, number of elbows, furnace connections, and
terminations.
M
aterIals
anD
j
oInIng
M
etHoDs
Two-three-inch nominal diameter PVC Schedule 40
pipe meeting ASTM D1785, PVC primer meeting ASTM
F656, and PVC solvent cement meeting ASTM D2564
specifications must be used. Fittings must be DWV type
fittings meeting ASTM D2665 and ASTM D3311. Carefully
follow the manufacturer’s instructions for cutting, cleaning,
and solvent cementing of PVC.
The use of Schedule 40 PVC cellular core DWV meeting
ASTM F891 or ABS cellular core (Foam Core) plastic pipe
is also acceptable as a flue/vent and intake pipe material.
PVC primer meeting ASTM F656 and PVC solvent cement
meeting ASTM D2564 specifications must be used.
Fittings must be DWV type fittings meeting ASTM D2665
and ASTM D3311. Carefully follow the manufactures
instructions for cutting, cleaning and solvent cementing of
PVC.
For Canadian installations; field supplied PVC venting
materials must be UL S636 listed.
