Siemens LMV51 Series Basic Documentation page 282

Preset fuel
parameters
282/301
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HVAC Products
19.10.3 Setting the user-defined type of fuel
If, when firing on gas or oil, the user-defined fuel type is selected, the relevant fuel pa-
rameters must be manually set.
Parameter:
V_LNmin
Amount of air required for stoichiometric combustion (λ = 1) [m³ air per m³ gas] or [m³
air per kg oil]. This value is used for calculating O
Parameter:
V_afNmin
Flue gas volume «wet» with stoichiometric combustion (λ = 1) in [m³ flue gas «wet» per
m³ gas] or in [m³ flue gas «wet» per kg oil]. This value is used for calculating O
control / precontrol or the combustion efficiency.
Parameter:
VatrNmin
Flue gas volume «dry» with stoichiometric combustion (λ = 1) in [m³ flue gas «dry» per
m³ gas] or in [m³ flue gas «dry» per kg oil]. This value is used for calculating O
control / precontrol or the combustion efficiency.
Parameter:
A2
This value is used for calculating the combustion efficiency. It is in compliance with the
definition given in the first BimScHV.
Parameter:
B/1000
This value is used for calculating the combustion efficiency. It is in compliance with the
definition given in the first BimScHV. The parameters are set using a resolution of
1/1000. This means that a parameterized value of 8 corresponds to 0.008.
Natural
gas H
V_Lnmin 9.90
V_afNmin 10.93
VatrNmin 8.89
A2 0.66
9 ≈ 0.009
B/1000
Basic Documentation LMV5...
19 Addendum 4: LMV52... with O2 trim control and O2 module
Natural Propane
gas L
8.41 23.80
9.43 25.80
7.69 21.80
0.66 0.63
9 ≈ 0.009 8 ≈ 0.008
trim control / precontrol.
2
Butane Fuel oil EL Fuel oil S
30.94 11.20
33.44 12.02
28.44 10.53
0.63 0.68
8 ≈ 0.008 7 ≈ 0.007
trim
2
trim
2
10.73
11.39
10.08
0.68
7 ≈ 0.007
CC1P7550en
13.08.2004