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NearBoiler Vent/Air-inlet Piping
8 .5 . 1
The boiler employs universal Exhaust-vent and Air-inlet appliance
adapters that accept 2 in. (60 mm) CPVC, Polypropylene (PP)
or FasNSeal Stainless Steel (SS) piping, without the need for
additional adapters.
Prior to inserting the piping into the universal adapter, ensure it
is properly beveled (approximately 1/8 in.) to avoid damaging or
dislodging the sealing gasket during installation.
Exhaust vent 2"
9
WARNING:
The boiler Exhaust and Combustion Air Inlet
are 2-in. (60 mm). If larger pipes are required, field supplied
increasers are required. Increasers must be of the same
material type used as the venting system. For polypropylene
vent systems, refer to the vent manufacturer's instructions for
connecting polypropylene pipe.
9
Fix the increaser with his own included connector clamp.
Ø 60-80 -
2"-3"
2PPS-X3L (PP)
3"
2"
9
WARNING: Gasket Seating - Improper seating can cause
leakage and eventual failure of the sealing gasket. Ensure the
vent pipe is properly beveled, prior to installation, and that the
pipe is fully inserted into universal appliance adapter. Failure to
follow these instructions may result in serious injury or death.
9
WARNING: exhaust venting must be supported using
the approved materials and methods stated in the vent
manufacturer's instructions, to reduce strain on piping joints.
Failure to follow these instructions may result in result in
damage, serious injury or death.
The first 3 ft (915 mm) of vent piping must be readily accessible
for inspection.
8 .6 Connecting flue gas accessories
Approved vent systems are:
- Twin pipe, concentric pipe
- Approved materials: CPVC, PP (M&G Duravent PolyPro,
Centrotherm InnoFlue, Z-Flex, Z-Dens and Selkirk Polyflue)
- Approved materials: PP-Flex (Z-Flex, Z-Dens)
- Stainless steel
- Sealed combustion/direct vent
- Terminations can be either horizontal or vertical (see approved
configurations) The diameters of the flue outlet and combustion
air inlet adapters supplied with the boiler are designed to fit
standard PP and CPVC pipes.
When installing approved venting, the installation instructions
provided by the vent manufacturer shall be followed in their entirety.
Failure to do so can result in severe injury, death or property
damage.
9
Do not use any DWV plumbing pipes to vent this boiler.
9
Do not use inlet Indoor Air for combustion
CPVC/PP/SS exhaust pipe
with 1/8 bevel to prevent
damage to gasket
Air inlet 2"
inspection
outlet
- 197470 -
2"-3"
(CPVC)
3"
2"
9
WARNING: ABS/PVC venting is not approved for use as
an exhaust vent material. Failure to comply could result in
personal injury, death or property damage and could void the
boiler warranty.
9
WARNING: Use of cellular core PVC (ASTM F891) or Radel®
(polyphenolsulfone) in venting systems is strictly prohibited.
9
WARNING: Covering non-metallic vent pipe and fitting with
thermal insulation shall be prohibited.
9
WARNING: the vent must be secured to the boiler by tightening
the gear clamp at the top of the boiler.
Installing of the exhaust and air intake system
8 .6 . 1
- Insert the flue exhaust pipe "A" completely into the adapter and
tighten the clamp "B" present in the flue exhaust adapter.
- Insert the air intake pipe "C" completely into the adapter and
tighten the clamp "D" present in the air intake adapter.
The correct flow direction into two pipes is shown in the figure below.
9
WARNING: Failure to follow the above instruction in their
entirety will result in in substantial property damage, severe
personal injury or death.
Exhaust vent 2"
Vent and combustion air pipe length
8 . 7
The maximum length for vent and combustion air pipes can be
found in the following table. Please note the length is for each vent/
combustion air pipe and not combined.
In the following tables are listed the equivalent length for CPVC
pipes and PP pipes:
Equivalent
lengths
for CPVC and PVC
pipe and fittings
1 ft vent pipe
45° elbows
90° elbows
Tee
Equivalent
Ø 2/4"
length
(60/100
mm)
for PP pipes
1 ft vent pipe
1 ft
45° elbows
4 ft
90° elbows
5 ft
To calculate lengths different from the approved configuration
please consider the losses indicated in the above tables.
8 .8 Approved configurations of horizontal and
vertical venting installation
- Place pipe supports per the vent manufacturer's instructions and local
code. The first support should be a close to the boiler as possible.
- The condensate must be disposed of in accordance with applicable
rules.
- Avoid locating vent terminals near equipment or building features
which can be subject to degradation from exhaust gases.
- If multiple boilers are installed in a row, allow at least 1 foot (305
mm) in the United States and 3 foot (915 mm) in Canada clearance
between the exhaust vent termination of one and the combustion air
intake of the other.
33
C
A
Air inlet 2"
D
B
Ø 2" (60 mm)
Ø 3" (80 mm)
1 ft
2.5 ft
5 ft
9 ft
12 ft
Ø 3/5"
Ø 2"
(80/125
(60 mm)
mm)
1 ft
1 ft
3 ft
3 ft
5 ft
5 ft
1 ft
3 ft
6 ft
Ø 3"
(80 mm)
1 ft
3 ft
5 ft
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