Raypak Hi Delta 302A-902A Installation And Operating Instructions Manual

4DANGER: Indicates the presence of immediate hazards which will cause severe person-al 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 qualified serv-ice technician to inspect the heater and to replaceany part of the control system and any gas controlwhich 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 other flam-mable 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 de-energizethe equipment before servicing.CAUTION: Operation of this heater in low-temper-ature systems requires special piping. Harmful inter-nal condensation will occur if the inlet water temper-ature does not exceed 105°F. Warranty claims willbe 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 a neg-ative or positive pressure equipment room, there arespecial installation requirements. Consult factory fordetails.WARNINGSPay Attention to These Terms