Siemens LFL Series Service Manual download pdf (Page 19)

(C)

D2878

Factory Wiring Diagram

RS 160/M LN

with burner mounted Siemens LFL control

LAYOUT (A) - (B) - (C)

Burner RS 160/M LN

Key to Layouts

CMV - Motor contactor

DA - LFL Control box

HL - High limit

H1 - Remote lock-out signal

H2 - Burner on signal

H4 - Power on signal

H5 - Permission ok

IN - Burner manual stop switch

MB - Burner terminal strip

MV - Fan motor

OC - Operating control

OC2 - High-low control

PA - Air pressure switch

PG - Min. gas pressure switch

PGM - High gas pressure switch

PS - Remote lock-out reset

RT - Thermal overload

SM - Servomotor

SO - Ionisation probe (flame rod)

SP - Plug-socket

TA - Ignition transformer

TB - Burner ground

Y0 - Pilot adjustment valve

Y10 - Adjustment valve

Y11 - Safety valve

Y13 - Pilot valve (safety)

NOTES

• For electrical connection use flexible cables according to local Regulations.

• The setting of the thermal overload must be according to the total burner amperage draw.

• The RS 160/M LN burners leave the factory preset for:

- 208-230 V power supply: only in this case, if 460 V power supply is required, change the fan motor connection from delta to star and chan

he thermal overload as well (see page 3);

- or 575 V power supply;

depending on the burner model (see page 3).

• The RS 160/M LN burners have been type-approved for intermittent operation. This means they should compulsorily be stopped at least once every

24 hours to enable the control box to check its own efficiency at start-up. Burner halts are normally provided for automatically by the boiler load con-

trol system.

If this is not the case, a time switch should be fitted in series to IN to provide for burner shut-down at least once every 24 hours.

Important note

When installing for the first time and after any maintenance work, make sure the gas valves are connected properly to the orange

terminals before proceeding to ignite the burner. Insert auxiliary lamps or check, with the aid of a tester, that power is not being supplied to

the valves during standby or pre-purging. Burner ignition with the gas valves open during pre-purging may cause an explosive condition.

Continuous fan operation

Change the wire connection from terminal 6 to terminal 1, move the jumper from terminals 12-13 to terminals 4-12 and

remove the wire from terminal 13 of control box as indicated below.

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 27 28

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Siemens LFL Series Service Manual Page 19

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