Siemens LMV5 Quick Start Manual page 96

Menu Path Parameter
O2 CtrlThreshold
LowfireAdaptPtNo
Params & Display>
O2ContrGuard>
Gas/Oil Settings
Type of Fuel
V_Lnmin
Params & Display>
V_afNmin
O2ContrGuard>
Gas/Oil Settings>
Fuel User Def
V_atrNmin
A2
B / 1000
LMV5 QSG Rev 4
U = User O = OEM
S = Service
This is the minimum load for O2 Control. If the load drops below this value, the O2 trim control de-activates.
5% above this load setting O2 control will reactivate. Typically set to the same load value as Point 2. Range
= 0 to 100 %, Def = 0%, Typ = 20%
Sets the point that Tau low fire is automatically measured. In effect, this sets the "autotune" point for low fire.
This value must be defined prior to completing the O2 Curves. Def = xx (undefined), Typ = 2.
The "autotune" point for high fire is done at the last point, typically point 10.
Gas Settings This enables the user to pick what type of fuel will be burnt with the O2 Control / Guard.
Options : user defined, naturalgasH (at or above 960 Btu/SCF), naturalgasL(below 960 Btu/SCF), propane,
butane. These choices appear when gas is the current fuel selected.
Oil Settings This enables the user to pick what type of fuel will be burnt with the O2 Control / Guard.
Options : user defined, Oil EL, oil H. Default is Oil EL. Oil EL should be used for #2 fuel oil. These choices
appear when oil is the current fuel selected.
S
For user-defined fuels, this represents the amount of air needed for stoichiometric combustion of the fuel.
For gas, this is cubic meters of air per cubic meter of gas, and for oil this is cubic meters of air per kg of oil.
Range = 0 to 90 Def / Typ = 9.90
For user defined fuels, this represents the quantity of flue gas generated (wet basis) when either one cubic
meter (for gases) or one kg (for oil) of fuel is combusted at stoichiometric conditions. Range = 0 to 40 Def /
Typ = 10.93
For user defined fuels, this represents the quantity of flue gas generated (dry basis) when either one cubic For user defined fuels this represents the quantity of flue gas generated (dry basis) when either one cubic
meter (for gases) or one kg (for oil) of fuel is combusted at stoichiometric conditions. Range = 0 to 40 Def /
Typ = 8.89
Adjustable constants for calculating the combustion efficiency when firing gas.
A2 -- Range = 0.40 to 80 Def = 0.65 Typ = 0.65
Sec 4 Pg 40
Descriptions / Notes
B/1000 -- Range = 1 to 20 Def / Typ = 9
60-62
www.scccombustion.com