| Gas fired, forced hot water heating system. Some of the components: 1) the flue pipe draft diverter hood, flue pipe 2) pressure relief valve 3)main disconnect switch 4)circulator pump 5) boiler data plate with BTU rating 6) heat exchanger drain valve 7) gas supply shut-off valve 8)thermocouple valve assembly 9)gas burners 10) gas supply line drip trap. |