Siemens LMV5 Series Basic Documentation

Also see for LMV 5 Series: User manual Manual Technical instructions Quick start guide Manual

105/278Siemens Building Technologies Basic Documentation LMV51... CC1P7550enHVAC Products 7 Display and operating unit AZL5... 01.10.2003The following section covers the parameter settings of the curves used by the basic unitmodule «Fuel / air ratio control».S e l e c t i o n m e n u « R a t i o c o n t r o l »The selection menu looks as follows:S e t t i n g s G a s 1)S e t t i n g s O i l 2)A u t o m / M a n u a l / O f f 3)T i m e s 4)N u m F u e l A c t u a t o r s 5)S h u t d o w n B e h a v 6)P r o g r a m S t o p 7)Selection of 3) through 6) leads to standard parameter settings of the parametersspecified.Selection of 1) leads to:S e l e c t i o n m e n u « S e t t i n g s g a s »Only the data associated with the currently active type of fuel can be parameterized.S p e c i a l P o s i t i o n s 1)C u r v e P a r a m 2)L o a d L i m i t s 3)A u x A c t u a t o r 4)Calling up 1) (HomePositions, PrepurgePositions...), 3) and 4) leads to standardparameter settings of the parameters specified.Selection of 2) leads to:S e l e c t i o n m e n u « C u r v e P a r a m » ( m o d u l a t i n g )P o i n t | L o a d : 2 3 . 2: 1 | F u e l : 2 3 . 2M a n | A i r : 4 1 . 6| A u x : 3 3 . 3I H i l f 2 : 2 9 . 2 only LMV52...I H i l f 3 : 1 3 . 8 only LMV52...I F U : 4 5 . 0 only LMV52...In this example, the ignition positions are copied to the first point of the curve.This is always made automatically when the ignition positions are defined but no pointon the curve has as yet been entered. The preliminary load value entered is the positionvalue of the fuel actuator.This point is also automatically approached as the low-fire point.If the installer attempts to reach submenu «Curve parameter settings» before theignition positions are defined, point number «1» appears. But the position fields display«XXXX», indicating that the data are invalid.When making the parameter settings, the installer is guided, starting with entry of theignition positions and coarse adjustment of the low- and high-fire positions to fineadjustment of the curve settings with up to 15 curvepoints.This setting of the curve can be made in 2 different ways:1. Individual points are specifically entered.2. Ratio control is operated manually until the value reached shall be stored as a newpoint.A more detailed description of both approaches is given below:Special functioncurve settings FARC