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Termination and fittings
1. The air termination must be oriented at least 12 inches
above grade or snow line as shown in FIG. 4-1, page
21.
2. Maintain the required dimensions of the finished
termination piping as shown in FIG. 4-1, page 21.
3. Do not extend exposed vent pipe outside of the
building more than what is shown in this document.
Condensate could freeze and block vent pipe.
4. Stainless steel terminations are designed to penetrate
walls with a thickness up to 9.25 inches of standard
construction.
All vent pipes and air inlets must
terminate at the same height to avoid
possibility of severe personal injury,
death, or substantial property damage.
Multiple vent/air terminations
1. When terminating multiple Crest boilers terminate
each vent/air connection as described in this manual
(FIG. 4-4).
ƽ WARNING
22
Installation & Operation Manual
4 Sidewall direct venting
Vent/air termination – sidewall
4'
4'
Figure 4-2 Clearance to Doors and Windows
VENT TERMINATION
IF LESS THAN 10’
36” MIN.
FORCED AIR
INLET
AIR TERMINATION
Figure 4-3 Clearance to Forced Air Inlets
Prepare wall penetrations
1. Air pipe penetration:
a. Cut a hole for the air pipe. Size the air pipe hole as
close as desired to the air pipe outside
diameter.
Vent pipe penetration:
a. Cut a hole for the vent pipe. For either combustible
or noncombustible construction, size the vent pipe
hole per the vent manufacturer’s instructions.
2. Install the vent and air intake piping. Seal all gaps
between the pipes and wall with RTV silicone sealant.
3. Seal all wall cavities.
ƽ CAUTION
Sidewall venting commercial products will
result in large exhaust plumes in cold
climates. Consideration should be taken
when locating in proximity to windows,
doors, walkways, etc.