Nearboiler Vent/Air-Inlet Piping; Connecting Flue Gas Accessories; Installing Of The Exhaust And Air Intake System; Vent And Combustion Air Pipe Length - Riello Residence PRO 32 KIS Installation & Operating Instructions Manual

8.5.1

NearBoiler Vent/Air-inlet Piping

The Residence PRO 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 flue and air exits are 2" (60 mm). If
you need to install pipes different from 2" (60 mm) it
is necessary to use a 2"-3" increaser (see examples in
approved configuration).
9
Fix the increaser with his own included connector clamp.
2/3" Ø 60-80 - 2PPS-X3L
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 and PP-Flex (M&G Duravent
PolyPro and Centrotherm InnoFlue)
- Stainless steel
- Sealed combustion
- Terminations can be either horizontal or vertical (see approved
configurations)
- The diameters of the flue outlet and combustion air intake
inlet adapters supplied with the boiler are designed to fit
standard PP , 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.
CPVC/PP/SS exhaust pipe
with 1/8 bevel to prevent
damage to gasket
Air inlet 2"
inspection
outlet
2/3" - 197470
3"
2"
9
WARNING: ABS/PVC venting is not approved for use as a 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.
8.6.1

Installing of the exhaust and air intake system

- 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.
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"
8.7

Vent and combustion air pipe length

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 length
for CPVC pipes
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.
30
C
A
Air inlet 2"
B
Ø 2" (60 mm) Ø 3" (80 mm)
1 ft
2.5 ft
5 ft
9 ft
Ø 3/5"
Ø 2"
(80/125
(60 mm)
mm)
1 ft 1 ft
3 ft 3 ft
5 ft 5 ft
D
1 ft
3 ft
6 ft
12 ft
Ø 3"
(80 mm)
1 ft
3 ft
5 ft