Coil Type Boiler is the traditional forced-circulation kind water tube coil type boiler incorporating the distinctive principle of combustion referred to as ‘Reverse Flow. Coil type Boiler will increase the combustion potency and permits a high rate of warmth unharness. It is often offered in each IBR and Non-IBR Design. Construction The boiler contains a jacketed MS shell housing a spiraling coiled. The combustion air is forced through the jacketed shell by means that of a centrifugal blower thereby obtaining to pre-heated. The flame travels downwardly within the coil and also the flue gases reverse upwards thereby giving 2 passes within the effulgent zone making certain complete combustion and best heat flux. The third pass of the flue gases is within the convective zone between the coil and also the inner shell. Flue gases then trip the economizer forming the fourth pass. Advantages of Coil Type Boiler: Fully Automatic unit Unique four pass d...