First Start-Up - Desa BG SERIES Operating Instructions Manual

After carrying out the preparation operations for the first
start-up, to start the warm air heater you must:
Position the plant main switch to "ON".
• Activating the "VENTILATION" function
Set the function switch (1) to "VENTILATION" ¤.
–
The burner remains off and only the centrifugal fan
will start to circulate the room air at the inlet
temperature.
• Disabling the "VENTILATION" function
– Set the function switch (1) to "0" (OFF). The centrifugal
fan switches "OFF".
• Activating the "HEATING" function
Adjust the room
–
temperature (e.g. 18°C).
Set the function switch (1) to "HEATING"
–
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The heater will go through the first stage of start-up and
approximately one minute after flame ignition, the fan will
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start, delivering warm air to the room to be heated.
The heater will remain in operation until the required
temperature is reached; then, the contact on the room
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thermostat opens, the burner stops and after a few
minutes (approximately four) the fan also stops.
Successive re-starts and stops are automatic according to
the temperature set, with no need for further action.
• Disabling the "HEATING" function
Act on the room thermostat or position the function
–
swtich (1) on "0" (OFF).
The burner stops immediately and after about 4 minutes
the fan stops too.
Never turn off the heater by removing the electrical
supply before the fan stops; this to avoid
dangerous overheating and actuation of the LIMIT
thermostat.

FIRST START-UP

thermostat to the required
.
During the first start-up there might be the presence
of odours and smokes caused by the evaporation of
the fluid used to protect the heat exchanger during
the storage period. It is a normal condition that will
disappear after a short period of operation. It is
recommended to air the served rooms.
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