2013-8-27 · 1 Ton Gas Fired Boiler SPECIFICATION NO. EP-WEX-GFB/2013-14 Page 6 of 7 INSTRUMENTATION 1 Water level controllers 2nos For feed water operation and low water level alarm 2 Over-ride controller 1no for lock-out under extra low water level alarm 3 Steam pressure gauge with cock 1no For display of boiler steam pressure