Burner Connection; Electrical Connections - Ferroli ATLAS D Instructions D'utilisation, D'installation Et D'entretien

ATLAS D
Connection to a storage tank for domestic hot water production
The unit's electronic board is arranged for managing an external storage tank for domestic hot water production. Carry
out the plumbing connections according to the diagram fig. 16 (pumps and non-return valves must be supplied sepa-
rately). Carry out: electrical connections as shown in the wiring diagram in cap. 4.4 "Wiring diagram". A probe FER-
ROLImust be used . 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 relevant controls.
Key
8 Domestic hot water outlet
9 Domestic cold water inlet
10 System delivery
11 System return

2.4 Burner connection

An oil or gas burner, with blown air for pressured furnaces, can be used if its operation characteristics are suitable for
the size of the boiler furnace and its overpressure. The choice of burner must be made beforehand, following the man-
ufacturer's instructions, according to the work range, fuel consumption and pressures, as well as the length of the fire-
box. Install the burner in compliance with the Manufacturer's instructions.

2.5 Electrical connections

Connection to the electrical grid
B
The unit's electrical safety is only guaranteed when correctly connected to an efficient earthing system exe-
cuted 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 electricity 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 respect 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 personnel. If changing the electric power cable, use solely "HAR
H05 VV-F" 3x0.75 mm2 cable with a maximum outside diameter of 8 mm.
EN
10
11
fig. 16 - Diagram of connection to an external hot water tank
cod. 3540G651 - 05/2008 (Rev. 00)
8
9
71