Section Iii Operation And Troubleshooting; Sequence Of Operation - Wayne LC2300M Manual

SECTION III
OPERATION AND TROUBLESHOOTING
A: SEQUENCE OF OPERATION
Figure 11: LC2300M power gas burner utilizing
Siemens LMV3 gas safety control and associated components
Upon voltage (120VAC) being applied to the burner, the safety control will progress through phases 00,
02, and 10 which confirm proper functionality of the gas and air actuators and the individual safety
circuits. The control will remain in Phase 12 "Burner Standby" until a call for heat is received.
Once a call for heat is made, voltage is applied to the motor start relay and the air switch must transition
from being unmade to made to indicate that the blower motor is running. If jumped, the air switch will
fault the burner control. With the control sequencing, there must be a point of being both made and
unmade.
Once air is proven, the burner will enter Phase 24 in which the air shutter opens fully and subsequently
completes Phase 30 in which it holds for the established pre-purge time.
After completion of pre-purge, the air and gas actuators travel to their respective ignition positions and
the ignition cycle will take place. If a flame is detected within the set time allotment, the burner will
progress to normal operating mode and the burner will be controlled by an analog input signal from a
PID control (if present) or manually as described in SECTION II - INITIAL STARTUP.
63899-002 Rev. A 3/20/2024
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