3
OVERVIEW AND TECHNICAL FEATURES
8
Operation and maintenance of the appliance
To ensure the correct operation of the appliance and to avoid failures, control of the switching on and off of the appliance must be
carried out exclusively via a switch located on the on/off command circuit.
If the appliance is to be connected to a Direct Digital Controller (DDC, available as an accessory), control of activating and deactivat-
ing the appliance must be performed exclusively through the DDC itself.
The appliance must never normally be switched on and off by shutting off the power supply upstream of the on/off com-
mands (DDC or other switch) before having operated these first. With the appliance running, also wait for the shutdown
cycle to end (approximately 3 minutes) before shutting off the power supply power.
If the appliance fails to operate correctly, with the consequent indication of the Machine code, follow the instructions of Paragraph
9.1
→
59.
In the event of failure of the appliance and/or breakage of any component, do not attempt to repair and/or restore opera-
tion; proceed as follows:
▶
deactivate the appliance immediately (if permitted and if no condition of danger exists) by starting the shutdown cycle via the
on/off command (or DDC) and waiting for it to terminate (approximately 3 minutes);
▶
disconnect the appliance from the gas and electricity mains, cutting off gas supply by means of the appropriate valve and the
power supply by means of the external circuit breaker provided by the electrical system installation technician on the appropri-
ate panel;
▶
contact your local Robur TAC.
If it is decided not to use the appliance for a prolonged period, disconnect the appliance following the instructions provided in
Paragraph 4.5
→
17.
Proper ordinary maintenance ensures the efficiency and good operation of the appliance over time.
Carry out maintenance operations according to the instructions supplied by the manufacturer (see Paragraph 7.2
→
53).
For maintenance of the appliance’s internal components, contact a Robur TAC or qualified technician; for other maintenance require-
ments, see Paragraph 7.2
→
53.
Any repair of the appliance must be carried out by Technical Assistance, using only original spare parts.
Failure to observe the indications given above may compromise the
operation
and
safety
of the appliance, and may invali-
date its guarantee, if active.
If the appliance is to be disposed of, contact the manufacturer for its correct disposal.
If the appliance is to be sold or transferred to another owner, ensure that this “Installation, user and maintenance manual” is
handed over to the new owner and installer.
3�2
OVERVIEW OF OPERATION
The appliance powered by 230 V 1N 50 Hz electrical power - .
During operation, combustion products are exhausted via the discharge terminal, with vertical outlet, at the top of the appliance.
Combustion product condensate is discharged via the special pipe which passes through the service plate (see Figure 3.3
→
12).
The appliance is equipped with a plate exchanger which separates the following hydraulic circuits:
▶
the internal circuit dedicated to the combustion unit and factory charged to enable storage down to -30°C;
▶
the system circuit. The section of circuit running from the exchanger to the hydraulic unions on the service plate is itself a part
of the system circuit.
Control and management of operation of the appliance occurs via the on-board electronics through the microprocessor control
board (see Figure 4.1
→
14).
Control and management of operation of the appliance may also take place via the Direct Digital Controller (see Figure 3.1
→
9) avail-
able as an accessory.
For instructions regarding the use, configuration and programming of the DDC, refer to the two manuals supplied with the
unit.
DDC configuration/programming operations must be carried out by an authorised Robur Technical Assistance Centre (TAC)
during initial activation procedures and according to the instructions supplied by the manufacturer.
