Technical data

5
0,0
0,2
0,4
0,6
0,8
1,0
1,2
1,4
1,6
1,8
2,0
2,2
2,4
2,6
2,8
3,0
3,2
3,4
3,6
3,8
4,0
4,2
4,4
4,6
4,8
5,0
5,2
5,4
5,6
5,8
6,0
0 100 200 300 400 500 600 700 800 900 1000 1100 1200
Residual head (m.c.a.)
Plant flow rate (l/h)
2.11 Emissions Linea ONE
NOx (max-min) 71 - 44 mg/kWh
CO (max-min) 215 - 32 mg/kWh
CO
2
(max-min) 9,5 - 9,5 %
CO/CO
2
ratio (max) 0,002 to 1
CO/CO
2
ratio (min) 0,0003 to 1
Ref. Condition 15 °C, 1013,25 mbar, dry gas
NOTE: L.P.G. data refer to section 10
2.13 PUMP DUTY
Linea ONE boilers are fitted with a variable speed circulation
unit that is already connected up in terms of plumbing and
electrics, and the usable performance it provides is shown in
the graph.
The boilers are fitted with an anti-blocking system that starts
an operating cycle every 24 hours when not used, irrespective
of the position of the function selector.
The “anti-blocking” function is only active when the electrical
power supply to the boiler is on.
Operating the circulation system without any water is strictly
forbidden.
VARIABLE SPEED CIRCULATION UNIT
The modulating circulating function is only active for the
heating function. When switching the three ways on the plate
heat exchanger, the circulation unit is set at maximum speed.
The modulating circulation function applies only to the boiler
circulation unit and not to circulation units on any external
devices connected to it (e.g. booster circulation unit).
Any of 4 operating modes can be chosen, depending on
situations and the type of plant.
By accessing parameter 90 in the technical menu, one of the
following possibilities can be chosen:
1 - VARIABLE SPEED CIRCULATION UNIT WITH
PROPORTIONAL MODE (41 <= P90 <= 90)
2 - VARIABLE SPEED CIRCULATION UNIT WITH
CONSTANT DT MODE (2 <= P90 <= 40)
3 - VARIABLE SPEED CIRCULATION UNIT WITH MAXIMUM
FIXED MAXIMUM SPEED MODE (P90 = 1)
4 - EXCEPTIONAL USE OF A STANDARD CIRCULATION
UNIT WITHOUT SPEED ADJUSTMENT (P90 = 0)
1 - VARIABLE SPEED CIRCULATION UNIT WITH
PROPORTIONAL MODE (41 <= P90 <= 90)
In this mode the boiler’s board determines what flow rate curve
to adopt according to the instantaneous power supplied by
the boiler.
The boiler controller breaks down the power range within
which the boiler operates in heating mode into various levels.
Depending on the power level in use when heating, one of
the speeds available is selected automatically according to a
linear logic: Maximum power = high speed, minimum power =
low speed.
This is used on all types of plants where the machine’s power
has been correctly balanced with the plant’s real needs.
Operationally:
- Access parameter 90
- Set the parameter = 41
Note: The parameter 90 = 41 setting is recommended by the
manufacturer.
Values exceeding 41 are used in specific cases.
2 - VARIABLE SPEED CIRCULATION UNIT WITH CONSTANT DT
MODE (2 <= P90 <= 40)
In this mode the installer sets the ΔT value to be maintained between
the delivery and return (e.g. if a value of 10 is entered, the circulation
unit’s speed will change to implement a plant flow rate aimed at
maintaining the ΔT between upstream and downstream of the heat
exchanger at 10°C).
By periodically sampling the values provided by the boiler delivery/
return sensors, the board increases or decreases the circulation unit’s
speed and therefore the plant’s flow rate. If the sampling shows a ΔT
value lower than that set, the speed is reduced until the ΔT increases to
the value set. Vice-versa is sampling is higher than the value set, the
speed is increased.
This is used for direct high temperature plants (typical of replacement),
where the boiler is not thermostatically controlled, and where a
calculated ΔT can be set.
When working with a constant delivery temperature and attainment of
stabilising the ambient conditions, the average temperature of the
2.12 Range rated (parameter 23)
Input fan speed (rpm) CO (ppm) - less than
8 kW 1500 35
10 kW 1750 55
12 kW 2100 75
14 kW 2400 92
16 kW 2750 110
18 kW 3100 130
20 kW 3400 140
22 kW 3650 155
24 kW 4050 170
26 kW 4400 180
28 kW 4700 190
30 kW 5000 200