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Idiomas disponibles
Idiomas disponibles
ATLAS D32 CONDENS K130 UNIT
High efficiency heating circulating pump
The factory setting is suitable for all installations; however a different operation strategy
can be set, depending on the characteristics of the system.
Setting Dp-v
Proportional head
Min
.
1
I
4
7
III
fig. 18
- Proportional Head Dp-v setting (fig. 18)
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. 19)
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.
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.
fig. 20 - Fuel filter installation
Setting
Fixed speed
Min
.
1
4
II
7
fig. 19
cod. 3541G840 - Rev. 01 - 10/2016
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.
I
II
III
fig. 21 - Gravity feed
fig. 22 - Suction feed
fig. 23 - Siphon feed
fig. 24 - Ring feed
EN
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