Observation windows on the side of the chamber allow the flame to be observed. The combustion products leave the combustion chamber through a duct in the end remote from the burner, and are turned to discharge vertically upward. Due to high flue temperatures, an air break transition piece is supplied between the chamber duct and the main flue, to entrain cool air and so reduce flue temperature. A flue system is available as an optional extra. The unit must be installed in a well ventilated area, with access to the burner end and at least one of the two sides.
Electrical safety is provided by overload and earth leakage circuit breakers.
The cooling water system has a flow switch and high temperature cut-out. The standard instrumentation provides measurement of flue temperature, cooling water inlet and outlet temperatures and flow , and fuel consumption, allowing energy balances to be determined. Detailed A frame mounted burner training unit comprising a 450 dia x 1000m cylindrical water cooled stainless steel chamber in which either an oil or gas burner can be fired, and the flame observed through four 100mm dia windows. Internal electric and mechanical safety devices allow for supervised operation by students. Instrumentation to measure the water, air and exhuast temperatures, and flow rates of the cooling water, air and fuel.