Venting Passage Through Ceiling And Floor; Rooftop Vent Termination - IBC SL 14-115 G3 Installation And Operating Instructions Manual

BEST PRACTICES
To reduce the possibility of
expansion noise, allow a 1/4" gap
around the exhaust and air intake
piping.
1-8
SL 14-115 G3, SL 20-160 G3, SL 30-199 G3 MODULATING GAS BOILERS SL 14-115 G3, SL 20-160 G3, SL 30-199 G3 MODULATING GAS BOILERS
Figure 5 : Pipe and fitting beveling
Follow all installation instructions supplied by the pipe and fitting manufacturer.
Ensure all venting components are clear of burrs/debris prior to assembly.
Care is to be taken to avoid ingestion into the fan of PVC/ABS debris left in the
combustion air piping.
All joints must be secured using appropriate solvent cement to bond the respective
pipe material (Canada: CPVC cement approved under ULC-S636, in accordance
with its manufacturer instructions; USA: PVC (ASTM D2564), or PVC/ABS (D2235)
- Use transition glue anywhere that PVC and CPVC are joined. Follow the cement
manufacturer's instructions closely when joining various components. For PPs,
connections shall be secured using approved retainer clips supplied by the respective PPs
manufacturer.
All vent connections must be liquid and pressure tight. Prior to firing the boiler, and before
any of the venting run is concealed by the building construction, the installer must test the
exhaust joints under fan pressure with the vent blocked, using a soap and water solution.
Installer must fill condensate trap prior to test.
Paint all joints with an approved leak test solution just as you would joints in a gas line,
and make sure there are no leaks. Good practice would suggest that the installer attach a
tag on the vent line near the boiler vent connection indicating the type of test, the date and
the installer's name.

1.4.4 Venting Passage Through Ceiling and Floor

• Confirm material meets local codes including fire stopping requirements.
• Some local jurisdictions require a minimum initial length of pipe be exposed or
accessible for inspection.
• Pipe clearances - no IBC requirements, but best practice allows a minimum 1/4" open
annulus around the pipe to prevent binding and expansion noise; follow local codes.
• All piping must be liquid and pressure tight.

1.4.5 Rooftop Vent Termination

a) Rooftop vents must terminate as follows:
• The exhaust pipe can terminate in an open vertical orientation without concern about
rain infiltration; rain will drain away through the condensate trap.
• Optional bird screen may be placed in a termination fitting. Leave unglued, and hold in
place with a short nipple. This permits easy access for cleaning.
• DO NOT exhaust vent into a common venting system.
INSTALLATION AND OPERATION INSTRUCTIONS