PART II: INSTALLATION
26
Integrated proving system (burners equipped with LME7x, LMV, LDU)
OIL TRAIN CONNECTIONS
OIL TRAIN CONNECTIONS
Hydraulic diagrams for light oil supplying circuits
PS
EV1
EV2
/
EV2
EV1
PGCP
This paragraph describes the integrated proving system operation sequence:
At the beginning both the valves (EV1 and EV2) must be closed.
Test space evacuating: EV2 valve (burner side) opens and keep this position for a preset time
(td4), in order the bring the test space to ambient pressure.Test atmospheric pressure: EV2 clo-
ses and keep this position for a preset time (test time td1). The pressure switch PGCP has not to
detect a rise of pressure.
Test space filling: EV1 opens and keep this position for a preset time (td3), in order to fill the test
space.
Test gas pressure: EV1 closes and keep this position for a preset time (td2). The pressure switch
PGCP has not to detect a pressure drop down.
If all of the test phases are passed the proving system test is successful, if not a burner lockout
happens.
On LMV5x and LMV2x/3x and LME73 (except LME73.831BC), the valve proving can be parameteri-
zed to take place on startup, shutdown, or both. On LME73.831BC the valve proving is parameteri-
zed to take place on startup only.
1
3
2
Key
1 Manual valve
2 Light oil filter
3 Light oil feeding pump
4 One way valve
5 Flexible hoses
6 Relief valve
NOTE:
in plants where gravity or ring feed systems are provided,
install an automatic interception device.
RING CIRCUIT
GRAVITY CIRCUIT
SUCTION CIRCUIT
Summary of Contents for HR92A
Page 45: ...PART III OPERATION 45 Fig 8...
Page 46: ...PART III OPERATION 46...
Page 57: ...Service manual AZL2x LMV2x 3x Burner Management System M12916CD Rev 3 4 03 2023...
Page 64: ...8 Parameters level heating engineer...
Page 106: ...50 ERROR CODE TABLE...
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