http://www.xn-boiler.com/organ....ic-heat-carrier-boil Organic Heat Carrier Boiler Introduction YYW(L) series automatic gas(oil) fired Thermal Oil Boiler (Organic Heat Carrier Boiler) is vertical /horizontal forced circulation boiler. Vertical Heat Conduction Oil Boiler heating surface compact structure, the heating surface from the inside, outside close-packed circular tube constitutes the inner coil raiation heating surface, the outer surface and the inner coil convercion heating surface. Technical Parameter Product Features *The exothermic combustion chamber for burning fuel including coil composed, most of the heat is absorbed by