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3. VENTING, INLET AIR & CONDENSATE
A. GENERAL
1. All venting and air inlet piping is to be installed in
accordance with local building codes, NFPA 31 and
these instructions.
DANGER
This vent system operates under a positive pressure.
Do not connect vent connectors serving appliances
vented by natural draft into any portion of
mechanical draft systems operating under positive
pressure. Failure to comply will result in severe
personal injury, death or major property damage.
2. This appliance may be vented in any one of the
following three ways. Examples of these systems are
detailed in this section.
a) Concentric Sidewall Venting
b) Concentric Vertical Chimney Venting
c) Single Wall Vertical Chimney Venting using the
chimney as a chase for inlet air
d) Concentric Vertical Roof Venting
B. APPROVED MATERIALS FOR EXHAUST
VENT AND INLET AIR PIPING
1. The venting system for this boiler has been approved
under UL-726 for use with this boiler. No substitutions
are to be made for this material.
2. The venting components shown in Table 3.2 and the
venting kits shown in Figures 3.2 through 3.5 are to
be purchased separately from your distributor.
Questions regarding the proper vent material are to be
directed to your PB Heat, LLC representative.
C. EXHAUST VENT/INLET AIR LOCATION
1. The concentric vent piping for this boiler is approved
for zero clearance to combustible construction.
2. The Pinnacle Oil boiler, like all high efficiency
products, is likely to produce a visible vapor plume
due to condensation. Surfaces near the vent
termination will likely be coated with condensation.
3. Care must be taken to locate the exhaust vent where
the exhaust gas, vapor plume, and condensation do
not cause a hazard or nuisance. For example, do not
locate the exhaust vent termination under a deck
where, under certain conditions, it could form a
coating of ice causing a hazard or reduce the life of
the deck materials.
VENTING, INLET AIR & CONDENSATE
4. Sidewall Vent System
a) Sidewall vented products are susceptible to wind
conditions that can effect combustion. To minimize
the effects of wind, the exhaust and air inlet
terminations must penetrate the same wall or
vertical surface. In addition, the length of the
exhaust and air inlet pipes must be roughly
equivalent.
b) Condensation from a sidewall vented appliance
may cause paint and other surface coatings to
deteriorate. In addition, soot stains may appear on
surrounding surfaces if the boiler is not properly
maintained.
c) If the boiler is used to heat potable (tap) water, the
boiler will operate year round. The effects of hot
gases and odors must be taken into consideration
during the summer months.
d) See Figure 3.1 for an illustration of clearances for
location of exit terminals for direct-vent, sidewall
venting systems.
e) The boiler vent system shall terminate at least 3
feet (0.9 m) above any forced air inlet located
within 10 feet (3 m). Note: This does not apply to
the combustion air inlet of a direct-vent appliance.
f) Provide a minimum of 1 foot (300 mm) distance
from any door, operable window, or gravity air
inlet into any building.
g) Do not locate the exhaust termination directly
under an operable window.
h) Provide a minimum of 1 foot (300 mm) clearance
from the bottom of the exhaust termination above
the expected snow accumulation level. Snow
removal may be necessary to maintain clearance.
i) Provide 4 feet horizontal clearance from electrical
meters, gas meters, air conditioning condensers or
other external equipment. In no case shall the exit
terminal be above or below the aforementioned
equipment unless a 4 foot horizontal distance is
maintained.
j) Do not locate the exit termination over public
walkways where condensate could drip or freeze,
causing a hazard or nuisance.
k) When the exhaust termination is adjacent to a
public walkway, it is to be located at least 7 feet
(2100 mm) above grade.
l) Do not locate exhaust termination directly under
roof overhangs to prevent icicles from forming.
m) Provide 3 feet (0.9 m) clearance from the inside
corner of adjacent walls.
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