IBC SL 28-160 Installation And Operating Instructions Manual page 13

Figure 5: IBC recommended
minimum vent terminal clearance
under ventilated soffit
Figure 6: Prohibited installation
Figure 7: Sidewall vent termination -
indoor combustion air applications
INSTALLATION
SL 28-160 MODULATING GAS BOILER
1.4.6 Sidewall Vent Termination
a) Vent terminal clearance minimums are as follows:
•
The exhaust vent terminal is to be placed 18" minimum (12" in USA) above
the grade or anticipated snow level.
•
Clearance above grade, veranda, porch, deck or balcony – 12" (0.3m), but
check local code also (anticipated snow levels may supersede).
•
Clearance to openable window or door – 36" (0.91m) (USA – 12")
•
Vertical clearance to ventilated soffit located above the terminal - 48" (1.2m)
See Caution note in this section.
•
Clearance to each side of centre line extended above meter/regulator
assembly: - 3' (0.91m) within a height of 15' (4.6m) above the meter/regulator.
•
Clearance to service regulator vent outlet: - 3' (0.91m)
•
Clearance to non-mechanical air supply inlet to building or the combustion air
intake to any other appliance: - 3' (0.91m) (USA – 12" (0.3m))
•
Clearance to a mechanical air supply inlet: - 6' (1.82m) (USA - 3' (0.91m)
above if within 10' (3.1m) horizontally)
•
Clearance above paved sidewalk or paved driveway located on public
property: - 7' (2.2m) Note: Cannot terminate directly above a paved sidewalk
or paved driveway that is located between two single family dwellings and
serves both dwellings
•
Clearance under veranda, porch, deck or balcony: - 12" (0.3m) IBC strongly
recommends a minimum of 24" with the SL 28-160 to avoid damage to
the structure. Note: Prohibited unless fully open on a minimum of two sides
below the floor.
•
Vents must be installed such that flue gas does not discharge towards
neighbor's windows, air intakes, and/or where personal injury or property
damage can occur.
•
It is important to ensure proper condensate management from vent
terminations. Condensate shall not be discharged in a manner that will cause
damage to external building finishes or components, or infiltrate building
envelopes, including adjacent structures.
Figure 8: Vent terminal clearances
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