Raypak 399B-2339B Installation & Operating Instructions Manual

DANGER: Indicates the presence of immediate hazards which will cause severepersonal injury, death or substantial property damage if ignored.WARNING: Indicates the presence of hazards or unsafe practices which could causesevere personal injury, death or substantial property damage if ignored.CAUTION: Indicates the presence of hazards or unsafe practices which could causeminor personal injury or product or property damage if ignored.NOTE: Indicates special instructions on installation, operation, or maintenance whichare important but not related to personal injury hazards.DANGER: Make sure the gas on which the heaterwill operate is the same type as that specified on theheater rating plate.WARNING: Should overheating occur or the gassupply valve fail to shut, do not turn off or disconnectthe electrical supply to the heater. Instead, shut offthe gas supply at a location external to the heater.WARNING: Do not use this heater if any part hasbeen under water. Immediately call a qualifiedservice technician to inspect the heater and toreplace any part of the control system and any gascontrol which has been under water.WARNING: To minimize the possibility of improperoperation, serious personal injury, fire, or damage tothe heater:• Always keep the area around the heater free ofcombustible materials, gasoline, and otherflammable liquids and vapors.• Heater should never be covered or have anyblockage to the flow of fresh air to the heater.WARNING - CALIFORNIA PROPOSITION65: This product contains chemicals known to theState of California to cause cancer, birth defects orother reproductive harm.WARNING: Risk of electrical shock. More than onedisconnect switch may be required to deenergize theequipment before servicing.CAUTION: Operation of this heater in low-temperature systems requires special piping.Harmful internal condensation will occur if the inletwater temperature does not exceed 105°F. Warrantyclaims will be denied when condensation occurs.CAUTION: If this heater is to be installed aboveradiation level, it must be provided with a low watercut-off device at the time of heater installation.CAUTION: If this heater is to be installed in anegative or positive pressure equipment room, thereare special installation requirements. Consult factoryfor details.WARNINGSPay Attention to These Terms4WARNING: This unit contains refractory ceramicfiber (RCF) insulation in the combustion chamber.RCF, as manufactured, does not contain respirablecrystalline silica. However, following sustainedexposure to very high temperatures (>2192F), theRCF can transform into crystalline silica(cristabolite). The International Agency for Researchon Cancer (IARC) has classified the inhalation ofcrystalline silica (cristabolite) as carcinogenic tohumans.When removing the burners or heat exchangers,take precautions to avoid creating airborne dust andavoid 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 localexhaust ventilation or dust collecting systems tominimize airborne dust. Wear appropriate personalprotective equipment including gloves, safetyglasses with side shields, and appropriate NIOSHcertified respiratory protection, to avoid inhalation ofairborne dust and airborne fiber particles.