
Installation, user and maintenance manual
– AY Condensing line, AY series
17
3
NORMAL OPERATION
In this section you will find all the indications necessary for the activation, regulation
and control of operation of the appliance via the controller present in the electrical
panel.
3�1
START UP (AND SHUT DOWN)
Efficient operation and long life of the appliance depend largely on its correct use!
Before activating the appliance, check that:
the gas valve is open;
•
the appliance is powered electrically: the general electrical switch (GS) must be
•
in the «ON» position;
the installation technician has ensured that the hydraulic circuit is supplied in
•
the correct conditions.
If these conditions are satisfied, it is possible to proceed with activation.
If the appliance is not connected to a DDC, it may be activated and deactivated only by
means of the on/off command provided by the electrical installation technician.
According to requirements, this on/off command may be an on/off button, an ambient
thermostat, a programmable timer, or one or more voltage free contacts controlled by
another process.
For details about the type of on/off command installed, contact the plant’s electrical
installation technician.
Start up
Switch on the appliance by means of the on/off command (placing it in the "ON"
position).
Shut down
Switch off the appliance via the on/off command (placing it in the "OFF" position).
The shutdown cycle takes approximately 3 minutes to complete.
The on/off command is essential! Do not switch the appliance on or off by connecting
it to or disconnecting it from the power supply directly, as this may be a source of dan-
ger and in any case damage the appliance or the plants connected to it.
If the appliance is connected to a DDC running in controller mode, the appliance is
started up and controlled exclusively by the DDC.
For instructions regarding the use of the DDC, refer to the two manuals supplied with
it, and in particular: "Final user manual - manual 2"
Visualising and clearing of operating codes
Operating codes can be generated by the controller or by the DDC.
The operating codes generated by the controller are visualised on its display and may
also be visualised on the display of the DDC (if fitted).
Operating codes generated by the controller can be reset with the controller itself or
from the DDC (if fitted or where possible).
For a description of operating codes generated by the controller and how to reset
them, refer to the list of operating codes contained in Table 8.1 TABLE OF OPERATING
CODES generated by the controller (firmware version 3.100)
→
77.
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