Pre-Installation
6720814332 (2018/04)
10
2.16
Gas specification
Gas consumption
Gas supply pressures
Natural gas
2.17
Hydraulic resistances
Fig. 6
Resistance graph per type
[l/h]
Flow rate
[mbar] Pressure drop
2.18
Residual head
Fig. 7
Residual head per boiler type, with pump group and non-return
valve
[A]
Resistance of boiler
[l/h]
Flow rate
[mbar] Residual head
[min.] Residual head at minimum pump speed
Fig. 8
Residual head per boiler type, with pump group
[A]
Resistance of boiler
[l/h]
Flow rate
[mbar] Residual head
[min.] Residual head at minimum pump speed
3
Pre-Installation
3.1
Cleaning primary systems
Maximum gas consumption
m³/h
Gas type
50-V2
65-V2
85-V2
100-V2
Natural gas E, H, E
s
(G20)
5.03
6.81
8.68
10.24
Propane 3P (G31)
1.80
2.48
3.19
3.76
Table 5 Gas consumption
Gas supply pressure
[mbar]
Country
Gas category
Min. Rated Max.
GB, IE
Natural gas H, G20
17
1)
1) Can be reduced by 3 mbar if measured at the inlet of the gas valve.
20
25
GB, IE
Propane, G31
(conversion required)
37
45
Table 6 Gas supply pressures
Country
Gas design
pressure [mbar]
Gas
category
Gas
family
Default
setting
[mbar]
GB, IE
20
2H
2H, G20
20
Table 7 Natural gas
Unit
Appliance type
50-V2 65-V2 85-V2 100-V2
Required flow rate at
Δ
T = 20 K
l/h
2200
3000
3600
4300
Max. flow rate at
Δ
T = 20 K
l/h
5000
Resistance of boiler with
required flow rate
mbar
90
170
225
320
Table 8 Hydraulic resistances
6720814332-3.2TD
500
450
400
350
300
250
200
150
100
50
0
500
1000
1500
2000
2500
3000
3500
4000
4500 5000
[l/h]
[mbar]
100-V2
85-V2
65-V2
50-V2
CAUTION:
▶ Isolate the mains supplies before starting any work
and observe all relevant safety precautions.
Guard against unintentional re-connection.
NOTICE:
▶ All the following pre-installation sections must be
read and requirements met before starting the boiler
or flue installations.
6720814332-04.2TD
0
50
100
150
200
250
300
350
400
450
500
550
600
650
700
750
800
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
[mbar]
[l/h]
65-V2
50-V2
85-V2
min.
100-V2
[A]
6720814332-05.2TD
0
50
100
150
200
250
300
350
400
450
500
550
600
650
700
750
800
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
[mbar]
[l/h]
65-V2
85-V2
50-V2
min.
100-V2
[A]
Содержание Worcester GB162-100 V2
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