Ferroli ATLAS D 34 CONDENS K130, Инструкция по использованию, установке и обслуживанию

Страница: 41 / 104

ATLAS D 34 CONDENS K130 UNIT
41
EN
cod. 3541Q644 - Rev. 01 - 11/2022
High-efficiency circulating pump (model PARA)
Control buttons and signaling LEDs
fig. 20
For a correct result of the "Thermal quantity balance" calculation (see section 11 THER-
MAL QUANTITY BALANCE (METERING), the circulating pump must be set to
"Con-
stant speed " and to the position . To set this adjustment, press button "A"
several times until the LEDs shown in the figure below light up.
fig. 21
However, a different operating strategy can be set, depending on the characteristics of
the system.
- Setting p-v Proportional Head
The circulating pump head will be automatically reduced with the decrease in flow rate
required by the system.
The strengths are reduced power consumption as the system demand decreases, and
reduced noise. The operating range is from minimum to maximum.
- Setting p-c Constant Head
The circulating pump head is constant as the flow rate required by the system varies.
- Setting Fixed speed
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 is from speed 1 (
) to speed 3 ( ).
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 in-
let, make sure not to reduce the water hardness too
much, as this could cause early deterioration of the mag-
nesium 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. 22.
fig. 22 - Fuel filter installation
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.
fig. 23 - Gravity feed
fig. 24 - Suction feed
In normal operation, the LED lights up green
LED on/flashing in case of a fault
Selected adjustment mode:
Proportional head p-v
Constant head p-c
Fixed speed
Selected characteristic curve (1 , 2 , 3 ) within the
adjustment mode
Combined LED indications during circulating pump venting, manual
restart and button lock
Press the button to set the various adjustment combinations
• Press for 3 seconds to activate circulating pump venting
• Press for 5 seconds for manual restart
• Press for 8 seconds to lock/unlock the button
A