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Any alteration, like the addition of an aftermarket heating element device, will void the warranty. GENERAL INFORMATION • LP and Water system must be turned on. • Have gas pressure tested periodically. Should be set at 11 inches of water column with three appliances running. • Drain water heater at regular intervals (at least one time during the year). • Drain water heater before storing RV for the winter or when the possibility of freezing exists. • Keep vent and combustion air grill clear of any obstructions. • Periodically, compare flame of main and pilot burners with FIG 5 and main burner adjustments in HOW TO OPERATE YOUR WATER HEATER. • When water heater is not in use set temperature control lever (White Rogers) or dial (Robertshaw) to lowest possible position. This will reduce the effects of low outdoor temperatures on calibration of temperature control mechanism. ELECTRONIC IGNITION MAINTENANCE • The water heater comes factory-equipped with a fused circuit board, which will protect the circuit board from wiring shorts. If the fuse should activate, the water heater will not operate. Before replacing the fuse, check for a short external to the board. Once the short is corrected, replace the 2 amp fuse with a mini ATO style fuse. Do not install a fuse larger than 3 amps. • If the fuse is good and the unit is inoperative, check for excessively high voltage to the unit (more than 14 volts). • If the previous two steps did not solve the problem, check the thermal cut-off (FIG 3-I). The thermal cutoff is a device installed in the power supply line. This device will shut off electrical power and stop heater operation when activated. For example, if an obstruction within the flue tube should occur, as described in the Preventative Maintenance section, the burner flame/heat may contact the cutoff, resulting in a melting of the fuse element incorporated in the thermal cutoff. In order to restore power and proper operation of the water heater, the obstruction must be removed and the thermal cutoff must be replaced. 5 PREVENTATIVE MAINTENANCE Spiders, mud wasps, and other insects can build nests in the burner tube. This will cause poor combustion, delayed ignition or ignition outside combustion tube. Listen for a change in burner sounds or in flame appearance from a hard blue flame to a soft lazy flame or one that is very yellow. These are indications of an obstruction in burner tube (FIG 4-C). Inspect and clean on a regular basis. a. Remove air shutter screw (FIG 4-A) and slide air shutter (FIG 4-B) down burner tube. b. Run a flexible wire brush down burner tube (FIG 4-D) until it is visible at end of burner tube. c. Vacuum burner where it enters combustion tube. d. Return air shutter to original position and replace screw. e. The orifice, burner tube and shutter must be aligned so that the shutter is not binding on the air tube. HOW TO CLEAN PILOT MODELS - FI...

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