COSMOGAS AXIA 20E, Инструкция по установке и эксплуатации

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3.23.9 - Combustion
air supplied from
inside
If the heater is installed in a large
open area such as a full basement
or alcove, the combustion air can
be supplied without the intake pipe,
(See fig.24 and 25). 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 (see fig. 24 and
25 item E). Air openings to the
room should not be obstructed.
For heaters in confined rooms, two
permanent openings must be
provided - one within 12” (304 mm)
of the ceiling and one within 12”
(304 mm) of the floor. Each
opening must be at least one
square inch per 1,000 Btu/hr (0.29
kW) heater input, but not less than
100 square inches (645 cm2).
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, should be of the
size listed below for each particular
arrangement:
- All duct work shall be the same
size as the opening to which it is to
be connected.
- One square inch (6 cm2) of free
area per 4,000 Btu/hr (1.17 kW) of
heater input for direct outdoor air
supply through an outside wall or
vertical duct directly outside.
- One square inch (6 cm2) of free
area for every 2,000 Btu/hr (0.59
kW) of heater input for direct
outdoor air through horizontal
ducting.
CAUTION !!! The discharge
pipe temperature is above 250°F
(121 °C) while functioning, therefore
it is essential that a thermal
insulation protection sheath be
used in the wall opening.
Figure 24 - Installation examples of the air
supplyed from inside with a split system
Figure 25 - Installation examples of the air
supplyed from inside with a coaxial system
3 - INSTALLATION