A) There is nothing more to b done, if you know the valves are holding u can straight away start opening the heater without wasting time. B) Drain the heater till pressure gauge reads zero n then start opening the heater. C) Drain the heater till F.O. stops coming out of the drain n then start opening the heater. D) First open the vent valve n allow the heater to depressurize. N then open the drain valve to drain the contents of the heater. « Previous Next »
Post a Comment