Gas Valve Selection - elco VECTRON GL 06.1200 DUO PLUS Betriebsanleitung

Overview

Gas valve selection

N.B.:
·
The pressure loss specified in the table
is to be added to the combustion
chamber pressure of the boiler in mbar
with the rated load.
MBVEF
Burner
412
power
(kW)
GL 06.1200
18
800
DUO PLUS
23
900
26
950
29
1000
35
1100
41
1200
MBVEF
Burner
412
power
(kW)
800 18
900 23
GL 06.1600
950 26
DUO PLUS
1000 29
1100 35
1200 41
1300 -
1400 -
1500 -
1600 -
MBVEF
Burner
420
power
(kW)
23
1100
25
1150
27
1200
30
1250
GL 06.2100
32
DUO PLUS 1300
37
1400
43
1500
49
1600
55
1700
62
1800
69
1900
76
2000
84
2100
Example: GL 06.2100 DUO PLUS
· System data:
Gas type: natural gas E
–
Required burner power:
–
Combustion chamber pressure with boiler rated load:
–
Gas flow pressure at transfer station with boiler rated load:
–
Gas supply pressure loss with boiler rated load:
–
· Selected gas valve:
VGD40
· Checking the selection:
Gas pressure loss from gas valve (from table):
–
Combustion chamber pressure:
–
Gas supply pressure loss
–
Total
–
Hence: gas flow pressure at transfer station:
–
·
The calculated gas flow pressure is to be
complied with at the gas valve inlet. To
calculate the gas flow pressures required
at the transfer station it is also necessary
to take into account the pressure loss of
the gas supply from the transfer station
to the gas valve inlet incl. all valves
MBVEF VGD20
420 Rp2
Natural gas E Hi = 10.365 kWh/m
Gas pressure loss (from gas valve inlet)
15 15
18 15
20 15
22 16
27 19
32 23
MBVEF VGD20
420 Rp2
Natural gas E Hi = 10.365 kWh/m
Gas pressure loss (from gas valve inlet)
15 15
18 15
20 15
22 16
27 19
32 23
37 26
43 31
50 35
57 40
VGD20 VGD40
Rp2 DN65
Natural gas E Hi = 10.365 kWh/m
Gas pressure loss (from gas valve inlet)
17
18
20
22
23
27
31
35
40
45
50
55
61
1600 kW
1 mbar
25 mbar
3 mbar
1 mbar
29 mbar
30 mbar > 29 mbar ð Selection of VGD40 correct.
06/2006 - Art. Nr. 13 018 118B
VGD40 MBVEF VGD20
DN65 420 Rp2
3
Natural gas LL Hi = 8.83 kWh/m
15 21 15
15 27 19
15 30 21
15 33 23
15 40 28
17 48 33
VGD40 MBVEF VGD20
DN65 420 Rp2
3
Natural gas LL Hi = 8.83 kWh/m
15 21 15
15 27 19
15 30 21
15 33 23
15 40 28
17 48 33
20 56 39
23 65 45
26 74 52
30 85 59
MBVEF VGD20
420 Rp2
3
Natural gas LL Hi = 8.83 kWh/m
15 33 25
15 36 27
15 40 29
15 43 32
17 47 34
19 54 40
22 62 46
25 71 52
28 80 59
32 89 66
35 100 74
39 - 82
43 - 90
3 mbar
30 mbar
contained therein (cut-out valves, com-
pensator, gas counter, TAS, additional
filter, etc.).
·
The operating point of the system must
be within the permissible working range
of the burner.
VGD40 MBVEF
DN65 412
Propane gas
3
Hi=25.89kWh/m³
15 15
15 17
16 19
17 21
21 25
25 30
VGD40 MBVEF
DN65 412
Propane gas
3
Hi=25.89kWh/m³
15 15
15 17
16 19
17 21
21 25
25 30
29 -
34 -
39 -
44 -
VGD40 MBVEF
DN65 420
Propane gas
3
Hi=25.89kWh/m³
15 15
15 15
17 15
18 15
20 15
23 15
26 15
30 17
33 20
37 22
42 25
46 27
51 30
MBVEF
420
15
15
15
15
15
15
MBVEF
420
15
15
15
15
15
EN
15
17
20
23
26
29