Welbilt Convotherm 4 - Specific Cleaning Tasks

9.9 Gas specification, natural gas 2H (E), natural gas 2L (LL), propane 3P, liquefied gas
3B/P
C4 GB/GS
Gas type
Natural gas 2H
(E)
Natural gas 2L
(LL)
Propane 3P Liquefied gas
3B/P
Standard test gas, code G20 G25 G31 G30/G31
Operating materials
Natural gas, liquid gas x x x x
Gas supply values
Gas pipe connection R 3/4" R 3/4" R 3/4" R 3/4"
Supply flow pressure [mbar] 20 (17 - 25) 20/25 (18 - 30) 29/37/50 (25 -
57.5)
29/37/50 (25 -
57.5)
Gas data (as per CE) at 15 °C and 1013 mbar dry
Lower Wobbe Index W
i
[MJ/m
3
]
45.7
(36.8 - 49.6)
37.4
(30.9 - 40.5)
70.7
(68.1 - 70.7)
80.6
(68.1 - 80.6)
Upper Wobbe Index W
S
[MJ/m
3
]
50.7
(40.9 - 54.7)
41.5
(34.4 - 44.8)
76.8
(72.9 - 76.8)
87.3
(72.9 - 87.3)
Lower calorific value H
i
[MJ/m
3
]
34 29.3 88 116.1
[MJ/kg] - - 46.3 45.7
Higher calorific value H
S
[MJ/m
3
]
37.8 32.5 95.7 125.8
[MJ/kg] - - 50.4 49.5
Exhaust gas extraction system
Air ventilation system with safe-
ty shutdown
mandatory mandatory mandatory mandatory
Exhaust gas values
CO
2
[%] 9.3 - 9.5 9.1 - 9.3 10.8 - 11.2 12.8 - 13.3
CO [ppm] < 500 < 500 < 500 < 500
9 Technical data
Installation manual 86