PeerlessBoilers Peerless PureFire PFC-460, Installation, Operation & Maintenance Manual

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13
D. EXHAUST VENT/AIR INTAKE PIPE SIZING
1. Table 3.2 shows the Exhaust Vent/Air Intake Size for
P
URE
F
IRE
® PFC-460 boilers.
2. Polypropylene vent systems can be installed using
optional InnoFlue
®
or PolyPro
®
vent adapters. Table
3.3 shows the appropriate PB Heat stock codes.
Contact your PB Heat, LLC Representative for more
information on this option.
3. Combined systems using separate polypropylene
exhaust & air inlet pipes which transitions to concentric
can also be installed. Contact your Centrotherm or
DuraVent representative for more information.
4. The total combined length of exhaust vent and air
intake piping is 200 equivalent feet (60 m).
a. The equivalent length of elbows, tees and other
fittings are listed in Table 3.4.
b. The equivalent length can be calculated as follows.
This is well below the 200 feet maximum
equivalent length. If the total is above 200
equivalent feet, alternate boiler locations or
exhaust penetration location should be considered.
E. EXHAUST VENT/AIR INTAKE INSTALLATION
1. Figures 12.1 & 12.2 show the exhaust connection on
top of the boiler, near the rear in the center.
a. The exhaust and air intake connections for PFC-460
boilers are 4" Male CPVC Pipe.
b. These connections are to be joined with suitable
PVC/CPVC adhesives in accordance with
manufacturers’ instructions.
2. The Air Intake connection is to the right of the exhaust.
3. Both connections are clearly marked.
4. Remove all burrs and debris from the joints and fittings.
5. Horizontal lengths of exhaust vent must be installed with
a slope of not less than 1/4" per foot (21 mm per meter)
toward the boiler to allow condensate to drain from the
vent pipe. If the vent pipe must be piped around an
obstacle that causes a low point in the piping, a drain
with an appropriate trap must be installed.
6. All piping must be fully supported. Use pipe hangers
at a minimum of 4 foot (1.22 meter) intervals to
prevent sagging of the pipe.
7. Exhaust and air inlet piping is to be supported
separately and should not apply force to the boiler.
8. Penetration openings around the vent pipe and air
intake piping are to be fully sealed to prevent exhaust
gases from entering building structures.
9. PVC & CPVC Piping:
a. Use only solid PVC or CPVC Schedule 40 or 80
pipe for exhaust venting. Cellular core PVC or
CPVC is not approved for exhaust vent.
b. All joints in vent pipe, fittings, attachment to the
boiler stub, and all vent termination joints must be
properly cleaned, primed and cemented. Use only
cement and primer approved for use with PVC or
CPVC pipe that conforms to ANSI/ASTM D2564.
c. A straight coupling is provided with the boiler to
be used as an outside vent termination. One of
the two screens is to be installed to prevent birds
or rodents from entering.
d. An air intake tee is provided with the boiler to be
used as an outside air intake termination. A screen
is to be installed to prevent birds or rodents from
entering.
VENTING & AIR INLET PIPING
This appliance uses a positive pressure venting
system. All joints must be sealed completely to
prevent leakage of flue products into living spaces.
Failure to do this may result in severe personal injury,
death or major property damage.
WARNING
Exhaust Air Inlet Total
Straight Length of Pipe 50' 50' 100'
90° Elbows, SR 2 x 5'= 10' 1 x 5' = 5' 15'
45° Elbows, SR 2 x 3' = 6' 6'
Conc. Vent Termination 1 x 3' = 3' 3'
Total 124'
Table 3.5: Sample Equivalent Length Calculation
Boiler
Model Centrotherm
InnoFlue
®
DuraVent
PolyPro
®
PFC-460 54633 54631*
Table 3.3: Polypropylene Vent Adapter Stock Codes
Boiler Model Exhaust Vent/Air Intake Size
PFC-460 4" (100 mm)
Table 3.2: Exhaust Vent/Air Intake Sizing
Fitting Description Equivalent Length
Elbow, 90° Short Radius 5 feet
Elbow, 90° Long Radius 4 feet
Elbow, 45° Short Radius 3 feet
Coupling 0 feet
Air Intake Tee 0 feet
Stainless Steel Vent Kit 1 foot
Concentric Vent Kit 3 feet
Table 3.4: Equivalent Length of Fittings
Exhaust Vent/Air Intake length in excess of 200
equivalent feet may result in reduced input due to
excessive pressure drop.
NOTICE
Covering non-metallic exhaust venting material is
prohibited and may result in severe personal injury,
death, or major property damage.
WARNING
* Use Duravent adapter connector, Part# PPS-PAC, with PB Heat stock
codes 54630 and 54631.