Pensotti Heatline Quatech Series
5
The boiler should be provided with two openings for ventilation of 30 sq in. each or one opening
of 60 sq in. The air openings must be in walls or doors and all air openings must be free of
obstacles and always be kept opened.
There must be two air openings with a net ventilation area of 60 sq in.
If there are no air openings in the room where the boiler is installed, as explained above, the
ventilation must be accomplished via a neighboring space, and this space must be equipped with
convenient air openings as described above.
There must be at least two openings with a net area of 60 sq in between the room where the boiler
is installed and the neighboring space (one over the top of the communicating door and one close
to the floor), or there must be an opening of 120 sq in opened up close to the floor. Another way to
obtain this free air is to cut off 1-5/8” from the bottom of the door.
The openings must be free from obstacles and always kept opened. They should be preferably be
openings on the door.
Instead of using air openings, the ventilation air may be supplied by a "combustion air duct". In
this case, the following must be taken into consideration:
There should be a net inlet air amount of 120 sq in for a duct without bends having a length of not
to exceed 32 feet. For any 90º bend, the length of the duct must be shortened 10 feet. Likewise, it
must be shortened 5 feet for any 45° bend.
Recent energy conservation practices have resulted in many people insulating and caulking their
homes to a level where the fresh air required for efficient combustion is not always readily
available. Particularly if you choose to isolate your Pensotti Heatline Quatech Series boiler in an
enclosed area of your home, a fresh air intake must be installed in this area.
Air for Combustion
The Pensotti Heatline Quatech Series boiler must have an assured supply of combustion air when
installed into an enclosed area. A dedicated outside supply of air through an installed duct or pipe
should be installed at or within 5 ft. of the boiler. A shut-off damper may automatically control
the supply duct when the unit is not operating, but the operating automatic damper must 'fail' in
the open position. The combustion air duct must have direct access to the outdoors and have a
rain hood and insect screen installed at the outside wall.
Care should be taken when the boiler is to be installed within a home where the operation of
exhaust fans, attic fans, kitchen ventilation systems, new high efficiency clothes dryers or
fireplaces may create severe
negative
vent pressures and unsatisfactory combustion and venting.
Special provisions should be made for additional make-up air to supply the other air requirements.
In cases of electric heat conversions or any structure of tight construction an opening of one (1)
square inch of minimum free area per 1000 BTU per hour of burner input must be provided. The
air supply to the burner must be provided directly to the burner and originate outside the structure
within five feet (5') of the burner. The inlet vent must originate on the same wall surface as the
