Desa BG SERIES Operating Instructions Manual

Also see for BG 110: TECHNICAL INFORMATION, INSTALLATION AND OPERATING INSTRUCTIONS

5 5436710981511121314212 2162DESCRIPTION OF THE HEATERThe warm air heater with fuel oil burner is a device that heats ambient air using thermal energy produced bycombustion.An airflow produced by a centrifugal fan is in contact with the heat exchanger wall, so heat is exchanged with nointermediate fluid. The combustion products, after losing heat, are expelled. This system allows considerable reductionof installation and operating costs, and is particularly well suited to applications where use of the heater is intermittentor occasional. During the summer, the heater can also provide ventilation only.GENERAL CONSTRUCTION FEATURESThe most important parts of the heater are:• Combustion chamber with flame inversion in stainless steel type AISI 430 resistant to high temperatures, with lowthermal loading, of appropriate shape and volume.• Tube bundle with oval section fire tubes and turbulence imprints to offer maximum heat efficiency.• Flue collector at the rear.• Plenum for direct air diffusion with horizontal guide vanes, each separately adjustable, on four sides.• Outer casing consisting of removable panels in painted steel sheet.• Heat insulation, anti-radiation, for the surfaces exposed to radiation from the heat exchanger.• Centrifugal fan, high performance, with double air intake and low sound emission level.The electrical system comprises:Double thermostat Fan-Limit adjusted and electrically connected to offer the following functions:• Function “FAN” (25-35°C), controls the fan start up approximately 60 seconds after ignition of the burner,and stops the fan at approximately four minutes after the burner stops. This avoids the emission of cold air onstart-up, and allows the accumulated heat in the heat exchanger to be removed, guaranteeing completerecovery before stopping.• Function “LIMIT” (100°C), with Manual reset, stops burner operation if the air is overheated.• Three way switch to allow heating, ventilation only in summer, and plant stoppage.Type 1÷41. Distribution plenum2. Air delivery3. Inspection doors4. Burner plate5. Air inlet6. Flame inspection7. Double thermostat FAN – LIMIT8. Chimney connection9. Combustion chamber10. Electric centrifugal fan11. Control panel12. Casing13. Front fluegas collector14. Fire tubes15. Rear fluegas collector16. Adjustable vanes6All Parts available fromwww.sparesgiant.com01772 329 565