Burner Connection - Ferroli ATLAS D ECO UNIT Instructions D'utilisation, D'installation Et D'entretien

ATLAS D ECO UNIT
- Setting Dp-v Proportional head (fig. 17)
The circulating pump head will be automatically reduced with the decrease in flow rate
required by the system. This setting is optimum for systems with radiators (2 pipes or sin-
gle pipe) and/or thermostatic valves.
The strong points are the reduction in power consumption with the decrease in system
demand and reduction of noise in radiators and/or thermostatic valves. The operating
range is from min. (1) to max. (7).
- Setting Fixed speed (fig. 18)
The circulating pump does not modulate its power. The operating principle is that of con-
ventional 3-speed circulating pumps (with a reduction in power consumption compared
to them). The operating range goes from speed 1 (I) to speed 3 (III).
Water system characteristics
In the presence of water harder than 25° Fr (1°F = 10ppm CaCO3), use suitably treated
water in order to avoid possible scaling in the boiler. Treatment must not reduce the hard-
ness to values below 15°F (Decree 236/88 for uses of water intended for human con-
sumption). Treatment of the water used is indispensable in case of very large systems
or with frequent introduction of replenishing water in the system.
B
If water softeners are installed at the boiler cold water inlet, make sure not to
reduce the water hardness too much, as this could cause early deterioration of
the magnesium anode in the hot water tank.
Antifreeze system, antifreeze fluids, additives and inhibitors
The boiler is equipped with an antifreeze system that turns on the boiler in heating mode
when the system delivery water temperature falls under 6°C. The device will not come
on if the electricity and/or gas supply to the unit are cut off. If it becomes necessary, it is
permissible to use antifreeze fluid, additives and inhibitors only if the manufacturer of
these fluids or additives guarantees they are suitable for this use and cause no damage
to the heat exchanger or other components and/or materials of the boiler unit and sys-
tem. It is prohibited to use generic antifreeze fluid, additives or inhibitors that are not ex-
pressly suited for use in heating systems and compatible with the materials of the boiler
unit and system.
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. Make the plumbing connections according to the diagram
fig. 19. Carry out: electrical connections as shown in the wiring diagram in cap. 5.4. A
probe FERROLImust be used.
Carry out the access procedure described below.
"Service Menu"
The card Service Menu is accessed by pressing the Reset button for 10 seconds.
Press the Heating buttons to select "tS", "In", "Hi" or "rE". "tS" means Transparent Pa-
rameters Menu, "In" Information Menu, "Hi" History Menu, and "rE" History Menu Reset.
Select "tS" and press the Reset button.
The card has 20 transparent parameters also modifiable from Remote Control (Service
Menu).
Press the Heating buttons to scroll the list of parameters in increasing or decreasing or-
der. Press the DHW buttons to modify the value of a parameter: the change will be au-
tomatically saved.
Change parameter P02 of the "Transparent Parameters Menu" to 6.
Press the Reset button to return to the Service Menu. Press the Reset button for 10 sec-
onds to exit to the card Service Menu.
fig. 19 - 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
95 3-way valve - 2 wires with spring return (not provided)

3.4 Burner connection

The burner is equipped with flexible pipes and a filter for connection to the oil feed line.
Run the flexible pipes out of the back and install the filter as indicated in fig. 20.
The oil feed circuit must be made according to one of the following diagrams, without ex-
ceeding the pipe lengths (LMAX) given in the table.
cod. 3541Q431 - Rev. 00 - 09/2019
fig. 20 - Fuel filter installation
fig. 21 - Gravity feed
fig. 22 - Suction feed
fig. 23 - Siphon feed
EN
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