Suggested Ratio Control Curve Commissioning - Siemens LMV3 series Technical Instructions

LMV Series
12. The word "run" will be displayed. If the burner is ready to be turned on, press Enter.
13. The LMV3 will now be in Phase 12 and the burner is ready to be turned on. Turn on the burner
switch. The burner should drive to pre-purge (Phase 24) and then drive to ignition (Phase 36).
P0 will be displayed again. If no changes are desired for the ignition position, press the + button
to attempt to light the pilot.
14. The pilot should light and the LMV3 should move to pilot stabilization (Phase 44). If the pilot
does not light on a new installation, there could be air in the gas line. Bleed the air in a safe
manner if necessary and attempt to re-light the pilot.
15. P0 will be displayed again once the pilot is lit. Tune the pilot by adjusting the ignition position of
the air actuator and / or adjusting the pilot gas pressure regulator, if necessary. Pilot flame
should be stable and return a flame signal of 85% or greater. To view the flame signal, hold
down the Enter button.
16. Once a satisfactory pilot flame is established, press the + button. The burner should open the
main fuel (gas) valves and attempt to light the main flame. The LMV3 should show a flame
failure since the manual main fuel (gas) valve is closed.
17. If a flame failure does occur, turn off the burner switch and proceed to reset the LMV3. The text
"OFF UPr..." should be displayed. Open the manual main fuel (gas) valve. To start the burner
again, use the procedure from steps 6, 12, 13, 14, and 15 above to light the pilot off again. Once
the pilot flame is established again and P0 is displayed, press the + button and attempt to light
the main flame.
18. If the main flame lights, P0 will be displayed one last time. Adjust the ignition position of the gas
valve to achieve a safe main flame. At this time, a calibrated stack gas analyzer should be
inserted into the stack and used to evaluate combustion. If the main flame fails to light, the
ignition position of the firing rate control valve and / or the gas pressure regulator may need to
be adjusted to achieve a combustible mixture at the ignition position. After the combustion has
been verified to be safe with an analyzer, parameter 208 can be set to 4 to hold the boiler at
ignition position for a boil out or boiler warming if required.

Suggested Ratio Control Curve Commissioning

1. The procedure below assumes the following:
a. Pre-requisites for Basic LMV3 systems (from above) are met.
b. Procedure for Configuring (Parameterization of) an LMV3 has been done (from above).
c. This is a first-time commissioning of the LMV3 and the combustion control curve is blank
(no points entered).
d. The burner has been lit off, and is at ignition position.
e. A calibrated stack gas analyzer is sampling the stack gas and can read %O
f. The boiler has been warmed up to operating temperature / pressure.
SCC Inc. Page 19
Technical Instructions
Document No. LV3-1000
and ppm CO.
2
Section 4