O2Maxmanvariable - Siemens LMV5 Series Technical Instructions
Linkageless burner management system
Hide thumbs
Also See for LMV5 Series:
- Basic documentation (278 pages) ,
- Quick start manual (232 pages) ,
- Manual (39 pages)
Table of Contents
Advertisement
LMV Series
LEGEND - Password Access: (U)=User, (S)=Service, (O)=OEM, Shaded = Commonly Used, ** = Must Set, X = Has Function, / = Partial Function
Menu Path
Parameter
Type Air Change (S)
Params & Display>
O2Contr/Alarm>
Gas/Oil Settings>
Control Param
O2MaxManVariable (S)
O2MinManVariable (S)
SCC Inc.
Default
Range
Influences the behavior of the O2 precontrol (see LoadCtrlSuspend ). Setting is determined
by whether or not a change in air flow (air pressure in the burner head) impacts the fuel
flow. Three possibilites exist:
1) like theory - a change in air flow (pressure) does not impact fuel flow.
like theory
2) like P air - a change in air flow (pressure) does impact fuel flow.
like theory
like P air
3) LambdaFact1 - ignores the learned value and assumes a Lambda factor of 1. This setting is
LambdaFact1
not recommended for most burners. Both 'like theory' and 'like P air' use the Lambda factors
learned at each point during O2 control curve commissioning, which is preferred.
NOTE: 'like theory' is typical for oil, and 'like P air' is typical for gas.
NOTE: The burner behavior discussed above can only be observed if a fuel flow meter is used
during commissioning.
These settings limit the amount of positive or negative O2 trim that can take place by limiting
how much the manipulated variable can be changed. O2MaxManVariable limits how much
35%
1-50%
the air damper can trim open. O2MinManVariable limits how much the air damper can trim
closed. These limits must be set so that they are not reached during normal operation with
normal variances in ambient conditions. However, they also must be set so that when the
limits are reached, an unsafe condition does not occur with the burner. Reaching these
-35%
-50-0%
limits will cause a deactivation of the O2 trim or lockout depending upon how parameter
OptgMode is set. See Section 6 for more detail.
Page 25
HOME
Description
P - LIST
Technical Instructions
LV5-1000
LMV
x x
x x
x x
Section 3
Hide quick links:
Advertisement
Chapters
Table of Contents
