3.7.7 Combustion air filtration system
If contamination from particulate matter in room-supplied
combustion air is a concern, an optional air intake filter may be
installed. The P-172 Air Filter kit has a 4" base for the combustion
air fitting of the SL 399 G3. See left for adaptation for SL 26-260 G3
Flue gas exhaust to
outdoors
P-172A Air intake filter
Field-supplied 4X3 mechanical joint coupling and a
short piece of 3-inch schedule 40 pipe
Figure 28 Adaptation of P-172 filter to 3" intake on SL 26-260 G3.
3.8 Closet installations
For installations in a confined space (such as a closet), ventilation
openings may be needed through a door or wall to prevent excessive heat from building up inside
the space.
The appliance must not be exposed to surrounding air above 122°F (50°C) or below 32°F (0°C).
3.9 Installing the condensate trap
IBC’s specified vent configuration promotes the safe drainage of moisture from the boiler and
exhaust venting without flowing liquids back through the heat exchanger (as done by some other
condensing boilers).
Warning
Fill the trap with water before initially firing the boiler to prevent exhaust fumes from
entering the room. Never operate the boiler unless the trap is filled with water. Failure to
comply will result in severe personal injury or death.
3.7.7 Combustion air filtration system
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