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Tab.16
Water flow rates in the boiler
Boiler model
IX 245–130
IX 245–150
IX 245–200
IX 245–250
Fig.17
Pressure drops for IX 245–130
1 100
1 000
900
800
2
700
7
600
6
500
400
300
3
200
100
-
0
2000
4000
7702684 - v04 - 05092019
5.2.3
5.2.4
The boiler's water flow rates must be higher than or equal to the
specifications in the table below:
Working flow rate with the low-loss header kit: minimum flow rate (litres/
hour)
2250
3000
3500
4500
5
4
6000
8000
10000
1
MW-5000723-1
The boilers are preset to run on G20 gas (gas H) and can be adapted to
run with the following gases:
G25 (gas L),
G27 (gas Lw),
G31 (gas P),
Important
To use a different type of gas, contact an approved assistance
service.
Electrical power supply
Power supply voltage
Caution
Please ensure the polarities shown on the terminals are followed,
i.e live (L), neutral (N) and earth (
Circulating pump
1 Q flow rate (litres/hour)
2 H pressure in millibar (mbar)
3 Operating water flow rate at nominal heat output = 3730 litres/hour
where ∆T = 30°C
4 Operating water flow rate at nominal heat output = 5600 litres/hour
where ∆T = 20°C
5 Operating water flow rate at nominal heat output = 7500 litres/hour
where ∆T = 15°C
ΔT Temperature difference between the flow water and the return
water in the boiler
5 Before installation
230 V AC/50 Hz
)
IX
29
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