IBC VFC 15-150 Manual

INSTALLATION AND OPERATION INSTRUCTIONS
1-8
VFC 15-150 - VFC 45-225 MODULATING GAS BOILERS
Figure 3: Rooftop vent terminal congurations
1.4.6 Sidewall Vent Termination
Sidewall direct vent applications shall be vented as follows:
• Both the inlet and exhaust terminations should normally be located on the
same plane (side) of the building.
• The exhaust outlet is to be placed so as to reach 24" minimum above the
down-turned intake - to avoid exhaust re-ingestion.
• The elevation of both pipes can be raised in “periscope style” after passing
throughthewall,thenconguredasinFigure 4, to gain required clearance.
1.4.5 Rooftop Vent Termination
Rooftop vents must terminate as follows:
• The exhaust pipe can terminate in an open vertical orientation without
concernaboutraininltration;thiswilldrainawaythroughaproperly
conguredcondensatetrap.
• If used, the intake air pipe is not typically drained, so it must be terminated with
a down-turned elbow (see Figure 3). The intake pipe does not need to penetrate
the roof at the same elevation as the exhaust (as shown); lower down roof is OK.
• To promote the projection of exhaust away from the building and from the
intake pipe, reduction of 3" pipe to 2" is permitted for a maximum lineal travel
of3'(e.g.thenal3')including2x90°elbowsoneachside.
• Optionalbirdscreenmaybeplacedinaterminationtting.Leaveunglued,
and hold in place with a short nipple. This permits easy access for cleaning.
• For roof top venting of multiple boiler sets, group all intake terminals together
for a common penetration through a custom cap. Alternatively, place in the
closestproximityachievableusingcommonlyavailablepipeashing.Similarly
group the exhaust pipes and place the 2 separate groups of pipes at least 3'
apart (the closest intake and exhaust pipes shall be 36" - or more - apart).
Use the same 24" (minimum) vertical separation for all termination options.
For alternate group terminations, contact the IBC Factory for written guidance.
• DO NOT exhaust vent into a common venting system.
WARNING
Condensate can cause
corrosion of metal roong
components and other
roong materials. Check
with the builder or roong
contractor to ensure that
materials will be resistant to
acidic condensate. pH levels
can be as low as 3.0

IBC VFC 15-150 Specifications

General

Brand	IBC
Model	VFC 15-150
Category	Boiler
Language	English