Comet Executive Gas Installation
2-7
3. The exhaust blower assembly must be
mounted VERTICALLY within 15 ft
(5 m) of the unit to maintain proper air
movement.
4. Mount the exhaust blower assembly using
heavy anchors or mountings screws.
5. Extend 8” (203 mm) round exhaust duct-
ing from the canopy discharge (Figure 2-6)
to the exhaust blower inlet (Figure 2-5, B).
6. Extend the 8” (203 mm) round exhaust
ducting from the exhaust blower output
to the outside discharge point, making
the length of the run as short and straight
as possible.
The discharge must be properly designed to
maintain the required air ow:
• To ensure proper operation of the
exhaust canopy sail switch and the
correct removal of by-products, it is
recommended that the unit be connected
to a separate exhaust system.
• The discharge must be protected from
backdrafts and precipitation.
• No screen or lter should be connected
at the discharge unless it is connected to
a commercial lint collector.
Ventilating the Work Area
WARNING
The room housing the unit
must be provided with
adequate make-up air to
ensure operator safety as
well as the proper operation
of the ironing section and
other fuel-burning equipment
in the area.
A permanent fresh air supply or natural air
ventilation is required for the unit. In general, one
square inch is required for each 4,000 BTU/H up
to 400,000 BTU/H, plus one square inch for each
10,000 BTU/H in excess of 400,000 BTU/H.
Based on these standards, the makeup air
required for the unit is approximately as follows:
• 56” cylinder: 19 sq. in. (123 cm
2
)
• 66” cylinder: 23 sq. in. (148 cm
2
)
• 80” cylinder: 26 sq. in. (168 cm
2
)
However, local requirements may differ.
Check local regulations to determine the exact
makeup air requirements. Follow local codes at
all times.
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