External (floating) tank water heater (oil-fired)

Plumbing · Gas Piping, Burners and Venting · printed page 271 (PDF page 272)

Original page Sign in to save

Book index entries

Exterior – Tank Water Heater Floating Tank Water Heater External Tank Floating Tank Plumbing

Text in the illustration

hot water outlet
cold water inlet
exhaust gases
vent connector
tank
insulation
water
dip tube
refractory
oil burner
pressure relief valve not shown
cross section

Generated explanation

A cross section shows an oil-fired water heater with an internal water tank surrounded by an external combustion-gas passage. An oil burner fires into a refractory-lined chamber beneath the tank, and arrows show hot gases rising around the tank sides and exiting through a vent connector near the top. Cold water enters at the top and travels down a dip tube, while hot water leaves through a separate top outlet. Insulation is shown along the outer enclosure. A note states that the pressure relief valve is not shown.

Components

water storage tank hot water outlet cold water inlet inlet shutoff valve dip tube oil burner combustion chamber external flue passage vent connector outer enclosure insulation refractory lining

Materials

metal thermal insulation refractory material