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The BI equipment is designed to heat the air in the room using heat energy produces by combustion. Essentially the
equipment consists of heat exchanger assemblies exchanging heat from the combustion by-products from a forced gas
or heating fuel oil burner by a high performance fan assembly. The air to be heated is aspired by the latter and flows
against the heat exchange where its temperature rises to then be distributed either immediately or via suitable
channelling. The particular features of the centrifugal fan make the equipment well suited for installation where hot air
needs to be distributed through channels or generally where it is necessary to have static pressure available. A special
flange (both on inlet and outlet) enables the equipment to be connected up the channelling.
This system gives a notable reduction in the costs of the plant and also works economically, making itself particularly
suitable where it is expected it be used intermittently or occasionally. The equipment is designed so that it can also be
used to provide ventilation only during the summer months.
GENERAL STRUCTURE FEATURES
Heat exchanger
Built with welded steel and steal-tested in accordance with the UNI-CIG 9462 standards, it is easy to be inspected for the
normal cleaning and maintenance operations. It consists of:
Combustion chamber in low thermal load stainless steel with suitable shape and size;
Exchange elements in stainless steel, with modular, large surface sections with swirl impressions for an optimal heat
exchange;
Exhaust manifolds in fine steel.
External casing
The external casing consists of removable panels in pre-painted steel and also includes:
Insulation of the surfaces exposed to radiant heat from the heat exchanger;
Delivery air flange for connection to the hot air distribution circuit;
Intake guard with flanges for connection to the intake circuit.
Fan assembly
All Parts available from
One or more high performance centrifugal fans producing low noise emissions. These are run by electrical motors
connected to a pulley and belt system. The motor has got an adjustable pulley (type 1 to type 10) which means the
system can be easily adapted to the particular needs of the customer's premises.
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Control and safety thermostats
The heater has a dual thermostat which is calibrated and electrically connected to perform the following functions:
"FAN" function (25-35°C, FAN thermostat) - controls fan start up about 60 seconds after burner ignition and stops
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the fan about 4 minutes after the burner has stopped. This prevents unpleasant cold air being conveyed into the room
on start up und utilises the stored heat in the heat exchangers after the burner has been switched off.
"SAFETY" function (type 5 to 15, TR thermostat) – preset at 80°C, it has the function of stopping the bruner in
case of anomalous overheating of the air. Automatic reset, the correct setting has to be set during the first stat-up.
"LIMIT" function (sealed setting 100°C, LM thermostat) – manual reset, switches the burner off in case of
overheating of the air.
Fume discharge outlet
The equipment has a circular outlet to which a metal exhaust pipe can be connected and safely joined.
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DESCRIPTION OF THE EQUIPMENT
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