1. Oil boiler (used oil boiler, oil fired boiler). 2. cast iron, life-long use. 3. heavy duty. 1. oil boiler. (used oil boiler, oil fired boiler).2. cast iron, life-long use ... ,000kcal/h, 5,685BTU)150kw (129,000kcal/h, 8,527BTU)Heating space1,000-1,400m21,600-2,100m2Working pressure0 Mpa0 MpaOutput ... %>91%Pump lift20 m20 mPump flow6 m3/h6 m3/hSize1500x820x1130mm1680x820x1130mm Oil Boiler