  Gas water heaters supply the most economical and convenient source of hot water obtainable. The automatic water heaters are made to heat water instantly and automatically upon opening any hot water faucet in the system. These heaters are made in various capacities from 2 to 8 gallons per minute. Circulating tank heaters which are attached to the kitchen boiler have to be lighted every time they are used. Usually the heater is lighted a few minutes before hot water is required, the time depending upon the amount likely to be used. A 30-gallon tank may be heated in approximately one hour. Sufficient hot water for an average bath may be had in fifteen minutes. The most economical way to handle the circulating tank heater, when water is needed for a bath, is as follows: Light heater and turn on faucet so that the water will flow into the tub as quickly as it is heated in the tank. This is usually at the rate of one gallon per minute. According to the city ordinance, in residences where water meter check valves are installed on the water service, the consumer should supply a safety |
|
