SECTION 3 - INSTALLATION INSTRUCTIONS
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IMPORTANT NOTICE
These instructions are intended only for the use by qualified personnel, specifically trained and experi-
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WARNING: Improper installation, adjustment, alteration, service or maintenance may damage the equip-
ment, create a hazard resulting in asphyxiation, explosion or fire, and will void the warranty.
CODE REQUIREMENTS
NOTE: The heater should not be located in an area where possible water leakage will result in damage to the
area adjacent to the heater or to the structure. When such locations cannot be avoided, it is recommended that
a suitable drain pan, with adequate drainage, be installed under the heater. The pan must not restrict combus-
tion air flow.
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SECTION 2 - GENERAL SPECIFICATIONS
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Ambient Temperature Rating of Heater Components
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WARNING: This unit contains refractory ceramic fiber (RCF) insulation in the combustion chamber. RCF, as
manufactured, does not contain respirable crystalline silica. However, following sustained exposure to very
high temperatures (>2192NF), the RCF can transform into crystalline silica (cristabolite). The International
Agency for Research on Cancer (IARC) has classified the inhalation of crystalline silica (cristabolite) as car-
cinogenic to humans.
When removing the burner or heat exchanger, take precautions to avoid creating airborne dust and avoid
inhaling airborne fibers. When cleaning spills, use wet sweeping or High Efficiency Particulate Air (HEPA)
filtered vacuum to minimize airborne dust. Use feasible engineering controls such as local exhaust ventilation
or dust collecting systems to minimize airborne dust. Wear appropriate personal protective equipment
including gloves, safety glasses with side shields, and appropriate NIOSH certified respiratory protection, to
avoid inhalation of airborne dust and airborne fiber particles.
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