Lighting and Operating Instructions
Lighting and operating instructions are supplied by the manufacturer and should be read and thoroughly understood before attempting to adjust the rate of gas input and the thermostat or other automatic controls, particularly if the serviceperson is not completely familiar with the design and construction of such controls.
Before leaving the premises, it is imperative that the serviceperson hang the operating instructions at a point convenient to the heater where it will be available for ready reference whenever needed by the owner or operating personnel.
The return warranty registration card, if provided, should also be properly filled in by the serviceperson and handed to the owner for mailing to the manufacturer. In many instances, warranty provisions are invalidated if the registration card is not returned to the manufacturer.
Installation and Maintenance Checklist
The water temperature control in a residential water heater should be set as low as possible and still provide satisfactory hot water at the faucets. This adjustment for low water temperature prolongs Install pressure and temperature relief valves per instructions on heater.
Relief opening must be kept clear of obstructions.
the life of the tank and prevents stacking. The temperature dial is adjustable and should be used to meet varying conditions and requirements. For control maintenance, it is best to call a qualified serviceperson. Instructions in the manufacturer’s field information bulletin should be followed when servicing or repairing water heater controls. Figure 4-55 provides a general checklist for water heater installation and maintenance.