Fire Box type1

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PACKMAN Firebox Bolier

Today’s process and heating applications continue to be powered by steam and hot water. The mainstay technology for generating heating or process energy is the packaged firetube boiler. The packaged firetube boiler has proven to be highly efficient and cost effective in generating energy for process and heating applications.

Efficient F.P.B three-pass design, available in 150 Kw to 1200 Kw models.  Our Firebox boilers are fitted with a forced draft flame retention burner that results in an efficiency of over 85%. This boiler-burner combination gives reliable operation with minimum maintenance.

Standard features

All unit and factory packaged with operating controls, relief valves, burner and fuel train. Installation is made simple in that only service connections are need to place in operation. Flexible burner systems are available for firing natural gas & oil or combination. High density 2” mineral wool insulation assures lower radiant heat loss.


Conventional atmospheric burners operate at high excess air levels, up to 300%, which decrease flame temperature. Variation of adiabatic flame temperature by excess air is illustrated in fig. 1. It is obvious that excess air has substantial effect on flame temperature and consequently on the rate of heat transfer and efficiency. Influence of excess air on thermal efficiency at different stack temperature is illustrated in fig. 2. Forced draft burners which are used in our boilers operate at lower excess air, about 10-30 percent.

By accounting appropriate heat transfer area, stack temperature decreased to 130-150 oC which jail energy inside boiler. These cases provide acceptable efficiency of 84-85% which lessen operation costs.

The initial cost of a boiler is the lowest portion of your boiler investment. Fuel costs and maintenance costs represent the largest portion of your boiler equipment investment. Some basic design differences can reveal variations in expected efficiency performance levels. Evaluating these design differences can provide insight into what efficiency value and resulting operating costs you can expect.