Burner Connection; Electrical Connections; Connection To The Flue; Service And Maintenance - Ferroli ATLAS D Serie Instrucciones De Uso

Connection to a storage tank for domestic hot water production
The unit's electronic board is arranged for managing an external storage tank for domes-
tic hot water production. Carry out the plumbing connections according to the diagram
fig. 16 (pumps and non- return valves must be supplied separately). Carry out: electrical
connections as shown in the wiring diagram in cap. 5.4. A probe must be usedFERROLI.
At the next lighting, the boiler's control system recognises the presence of the hot water
tank probe and automatically configures the DHW function, activating the display and rel-
evant controls.
10
11
fig. 16 - Diagram of connection to external hot water tank
Key
8 Domestic hot water outlet
9 Domestic cold water inlet
10 System delivery
11 System return

3.4 Burner connection

The oil burner, with blown air for pressurized furnaces, can be used if its operation char-
acteristics are suitable for the size of the boiler furnace and its overpressure. The choice
of burner must be made beforehand, following the manufacturer's instructions, according
to the work range, fuel consumption and pressures, as well as the length of the combus-
tion chamber. Install the burner according to the Manufacturer's instructions.
The electrical power absorbed by the burner must not exceed the value
A
given in the technical data table.

3.5 Electrical connections

Connection to the electrical grid
B
The unit's electrical safety is only guaranteed when correctly connected to an
efficient earthing system executed according to current safety standards. Have
the efficiency and suitability of the earthing system checked by professionally
qualified personnel. The manufacturer is not responsible for any damage
caused by failure to earth the system. Also make sure that the electrical system
is adequate for the maximum power absorbed by the unit, as specified on the
boiler dataplate.
The boiler is prewired and provided with a Y-cable and plug for connection to the elec-
tricity line. The connections to the grid must be made with a permanent connection and
equipped with a bipolar switch whose contacts have a minimum opening of at least 3
mm, interposing fuses of max. 3A between the boiler and the line. It is important to re-
spect the polarities (LINE: brown wire / NEUTRAL: blue wire / EARTH: yellow-green
wire) in making connections to the electrical line. During installation or when changing
the power cable, the earth wire must be left 2 cm longer than the others.
B
The user must never change the unit's power cable. If the cable gets damaged,
switch off the unit and have it changed solely by professionally qualified person-
nel. If changing the electric power cable, use solely "HAR H05 VV-F" 3x0.75
mm2 cable with a maximum outside diameter of 8 mm.
Room thermostat (optional)
B
IMPORTANT: THE ROOM THERMOSTAT MUST HAVE VOLTAGE-FREE
CONTACTS. CONNECTING 230 V TO THE ROOM THERMOSTAT TERMI-
NALS WILL PERMANENTLY DAMAGE THE ELECTRONIC BOARD.
When connecting time controls or a timer, do not take the power supply for
these devices from their breaking contacts Their power supply must be by
means of direct connection from the mains or with batteries, depending on the
kind of device.
38
EN
Accessing the electrical terminal block
Undo the two screws "A" located on the top part of the control panel and remove the cover.
8
9

3.6 Connection to the flue

The unit must be connected to a flue designed and built in compliance with current reg-
ulations. The pipe between the boiler and flue must be made from material suitable for
the purpose, i.e. heat and corrosion resistant. Ensure the seal at the joints and insulate
the entire pipe between boiler and flue, to prevent the formation of condensate.

4. SERVICE AND MAINTENANCE

All adjustment, conversion, commissioning and maintenance operations described be-
low must only be carried out by Qualified Personnel (meeting the professional technical
requirements of current regulations) such as the personnel of the Local After-Sales
Technical Service.
FERROLI declines any liability for damage and/or injury caused by unqualified and un-
authorised persons tampering with the unit.
4.1 Adjustments
TEST mode activation
Press the heating buttons (details 3 and 4 - fig. 1) together for 5 seconds to activate the
TEST mode. The boiler switches on irrespective of the system or DHW request.
The heating symbol (detail 24 - fig. 1) and DHW symbol (detail 12 - fig. 1) flash on the
display.
To deactivate the TEST mode, repeat the activation sequence.
The TEST mode is deactivated automatically in any case after 15 minutes.
Burner adjustment
Boiler efficiency and correct operation depend above all on accurate burner adjustments.
Carefully follow the Manufacturer's instructions. The two-stage burners must have the
first stage adjusted to a power level not below the boiler's rated min. power. The power
of the second stage must not be higher than the boiler's rated max. power.
cod. 3541H742 - Rev. 00 - 11/2019
A
fig. 17 - Accessing the terminal board
eco
bar
fig. 18 - TEST mode
ATLAS D
A