Adjusting P0, P1, And P2 Via The Lme7 Built-In Display - Siemens LME7 Series Technical Instructions

LME Series

Adjusting P0, P1, and P2 via the LME7 Built-in Display

1. While in standby (OFF), press and hold the A button and either the + or - button for more than five
seconds until "OFF" starts blinking.
2. Give the LME7 a call for heat. The LME7 will proceed to start the burner. After prepurge is
complete, the LME7 will slow the blower down to the preset ignition speed (P0).
3. At this point, the LME7 will alternately display P0 and a three-digit number. The three-digit number
is the setting of the ignition speed P0 divided by 10. For example, if the display alternately displays
P0 and 200, this means that the ignition speed is currently set for 2000 RPM.
4. To adjust the ignition speed, press and hold the A button while simultaneously pressing the + or -
button to increase or decrease the speed respectively. The speed of the blower will change in real
time. Once the desired ignition speed P0 has been set, press the info button.
5. The startup of the burner will continue. The burner will light off and establish flame. Once the
burner has lit off, it will drive to the preset low fire speed (P1).
6. The LME7 will then alternately display P1 and a three-digit number that is representative of the low
fire speed divided by 10. To adjust the low fire speed, press and hold the A button while
simultaneously pressing the + or - button to increase or decrease the speed respectively. The speed
of the blower will change in real time. Once the desired low fire speed P1 has been set, press the
info button.
7. The LME7 will immediately drive to the preset high fire speed P2.
8. The LME7 will then alternately display P2 and a three-digit number that is representative of the high
fire speed divided by 10. To adjust the high fire speed, press and hold the A button while
simultaneously pressing the + or - button to increase or decrease the speed respectively. The speed
of the blower will change in real time. Once the desired high fire speed P2 has been set, press the
info button.
9. Press the + and - buttons together (escape) to return to normal operation. The PWM blower will
now respond to the external load control signal being supplied to the LME7.
SCC Inc. Page 7
Technical Instructions
Document No. LME-1000
Section 6