Steel Watertube Characteristics
Prime Duty: Hydronic heating systems, apartments, office buildings, small commercial/industrial buildings.
Economic where high hydrostatic pressure over 30# WWP are required.
Boiler not affected by thermal shock, however is subject to flue gas condensation caused by low inlet and/or operating temperatures.
Atmospheric firing. Pressure fired not true forced draft.
Large refractory surfaces not water-backed cause “hot spots.”
Heavy insulation of jackets required.
Cannot be used for process steam due to low water content.
Medium cost/low longevity.