First Start-Up - Desa BG Series Technical Information, Installation And Operating Instructions

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"
–
The heater will go through the first stage of start-up and
approximately one minute after flame ignition, the fan will
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
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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