11
Carbon Monoxide Warning
Follow all the local and provincial codes or, in the
absence of local and provincial codes, the “Natural Gas
and Propane Installation Code,” CSA B149.1-current
edition to properly install vent system.
Failure to do so can result in death, explosion, or
carbon monoxide poisoning.
WARNING
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• water heaters installed near chemical storage areas
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such as sulfur, fluorine, and chlorine. These elements are
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or in a confined area or small enclosure such as a closet
or small room. Confined spaces are areas with less than
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Unconfined Space
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HR inputs.
COMBUSTION AIR & VENTILATION
TABLE 1
BTU/HR
(kW) Input
Minimum Square
Feet
(Square Metres)
with 8 Foot
(2.44 Metre)
Ceiling
Typical Room
with 8 Foot (2.44
Metre) Ceiling
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IMPORTANT:
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proper air requirements to the water heater. Areas that
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fined space.
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outside air into the water heater area.
Confined Space
For the correct and proper operation of this water heater,
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and dilution of flue gases.
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2. All air from outdoors.
All Air from Inside the Building
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unsure that the structure meets this requirement, contact a
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When indoor air is used, small enclosures and confined
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the draft hood. See Figure 6.