COSMOGAS BMS 10/20, Инструкция по эксплуатации, Страница: 19 / 56

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A INSTALLATION INSTRUCTIONS
4.2 Split Flue
The split flue vent system (two separate pipes)
can be extended (on the discharge side only) up
to a total length of 20 ft (6 m). Changes in direction
can be obtained by using 90° and 45° elbows. If
they are installed, there will be a loss of draught
equal to 3ft (1 m) and 1 1/2ft (0.5 m) of straight
pipe, respectively. This is valid only for pipes and
elbows manufactured by Cosmogas s.r.l..
If the heater is installed in a large open area such
as a full basement or alcove, the combustion air
could also be supplied without the intake pipe,
(For model BMS see figures 8, 11, 12, 13 and 14 or
for model BTS see figures 16, 18, 19 and 20 for
model BTS). NOTE: The heater will draw all air for
combustion through the top of the unit from the
space around the heater. Ventilation should be
adequate to provide sufficient air to properly
support combustion. Air for combustion and room
ventilation must be obtained from spaces freely
communicating with the outdoors. Air openings to
the room should not be obstructed.
For heaters in confined rooms, two permanent
openings must be provided - one within 12” of the
ceiling and one within 12” of the floor. Each
opening must be at least one square inch per 1,000
BTU/H heater input, but not less than 100 square
inches. These openings must freely connect with
areas having adequate infiltration to the outside.
When all air provided is supplied from the outdoors,
the openings, as described above, shall be of the
size listed below for each particular arrangement:
- All ducting shall be the same size as the opening
which it is to be connected.
- One square inch of free area per 4,000 BTU/H of
heater input for direct outdoor air supply through
an outside wall or vertical duct directly outside.
- One square inch of free area for every 2,000
BTU/H of heater input for direct outdoor air through
horizontal ducting.
Caution!
The discharge pipe temperature is above
250°F while functioning, therefore it is
essential that a thermal insulation
protection sheath be used in the wall
opening.
4.3 Chimney Venting
If split type vent will be venting into a chimney,
make certain that no other appliances are
vented into it. This power-vented heater must
not share a chimney. Vent exhaust terminal
should be inserted into, but not beyond,
inner wall of chimney.
Do not vent into transient pipe. Warranty will
be void.
4.4 Venting Locations - Outside
Walls (Direct Venting)
The center line of the vent opening must be
at least 16 1/2” above grade, outside, and at
least 12” from any other building openings
(doors, windows, etc.).
Make sure that vent pipe is pitcheed down
from the unit toward the outside wall 1/4” per
foot. This will prevent any water from running
back into the heater.
Do not locate the vent terminal where flue
products could strike against building
materials and cause corrosion.
4.5 Kit for air intake/flue
discharge
For comfort for the installer, COSMOGAS
has created some flue kit, complete of all
the necessary components for flue
discharge and air intake. The four kits
available are as follows: