121/301
Siemens Building Technologies Basic Documentation LMV5... CC1P7550en
HVAC Products 7 Display and operating unit AZL5... 13.08.2004
7.4 Safety check function
The safety check function may only be performed by authorized staff.
It is possible to activate
• the floss-of-flame test, and
• the SLT test
The loss-of-flame test is triggered manually with the AZL5… and produces an interrup-
tion of the flame signal.
Using safety shutdown «Loss of flame», the LMV5... must shut the burner down.
Activation of the SLT test negates the internal controller and temperature limiter func-
tion.
The setpoint and the temperature limiter switch-off threshold will be ignored.
The burner will be switched on and the output automatically increased to 100 %.
After safety shutdown by STL lockout or manual selection, the SLT test can be deacti-
vated again.
7.5 Menu and parameter lists
For each line, a parameter for the AZL5… menu is defined.
Name of column Description
Menu level This parameter name or this submenu level corresponds to
the name on the menu
Description Brief explanation of the parameter or of the submenu level
Value range Definition of setting limits within which the parameter can be
changed
Access rights Definition of access rights. Parameters can be set by:
User: Plant operator
Service: Heating engineer
OEM: Boiler / burner manufacturer
Basic parameter setting Factory-set parameter
LMV51... Line marked with an “x“: Line displayed with the LMV51...
system
LMV52... Line marked with an “x“: Line displayed with the LMV52...
system
The parameter list shown on the next pages represents the preselection for the following
type of system:
• LMV52.200A2
• SQM45...
The basic parameter settings made in the factory can vary, depending on cus-
tomer- or country-specific requirements.
The preselected values listed are valid for the following parameter set:
• Parameter set code: 20
• Parameter set version: 400
If required, the code or version of the parameter set can be displayed on the AZL5...
In that case, select menu item «Factory ID» from the menu of the relevant device.
Loss-of-flame test
SLT test
AZL5… menu structure
with parameter definitions