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Building Technologies Basic documentation LMV37.4... CC1P7546en
HVAC Products 8 Connection to load controllers 01.12.2009
8.4 Manual output
A manual output can be set with the «Normal display» of the display and operating unit
or via the PC tool.
Manual output via the display and operating unit
Manual output can be activated or adjusted by keeping the
F button depressed for at le-
ast 1 second and by pressing the
+ or – button.
Output
0 means «Manually off».
As long as manual output is active, the output appearing on the normal display flashes.
To deactivate and to change to automatic operation, press
Esc for 3 seconds.
If «Manually off» is activated, it is stored via mains OFF.
On power return, the burner assumes the «Manually off» position (
OFF flashing) (refer
to chapter
Operation).
Activation of «Manually off» in operation
To activate «Manually off», first run the system to the minimum output limit. Then, keep
the
F button depressed for at least 1 second and press the – button.
«Manually off» is activated by releasing the
F button and by pressing again the – button.
Caution!
«Manually off» must not be used by it self to put a burner out of operation when
doing mounting work, or when the burner is not ready for operation. The safety
notes contained in chapter Safety notes must be observed!
Manual output via the PC tool
Refer to description of the PC tool (J7352).
8.5 Output with curve settings
To set the curves via the display and operating unit or the PC tool, a special parameteri-
zation output is provided. Using this output, it is also possible to approach the point of
ignition. The output is delivered automatically and cannot be set manually. It is only
mentioned here for the sake of completeness.
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