Date 1

BFP 21 L3 Oil Pump

Date 2

BFP 21 Two-Pipe Conversion

071N0041

071N0064

Date 3

BFP 11 L3 Oil Pump

Date 4

BFP 11 Two-Pipe Conversion

071N0046

071N0063

Date 5

Left and Right Rotation

Date 6

Oil Supply through the Pump

Date 7

BHO 70 Series Control Box

New Type Remarks

BHO 71.10 One-stage systemBHO 72.10 Two-stage systemBHO 72.11 Two-stage system, short pre-purge/long post-ignitionBHO 73.10 Two-stage system, short post-ignition (terminals 6 and 7)BHO 74.10 Two-stage burners above 30 kg/h + WLE

Date 8

Setting the box to diagnostics If a fault occurs, the burner control will lockout, this is shown

by a constant red light in the press button. The reason for lockout can be read by means of flash codes

in the press button. Press the button and keep it down for 5 seconds, the control

will change to show flash codes. The flash code is shown at intervals of 2 seconds, to return to

“reset mode” press the reset button and keep it down for 5 seconds.

The control is reset by pressing the reset button shortly. Note! It is only possible to reset the control in “reset mode”. When reset, the control will try to restart, but if the fault still

exists or a new one has occurred, the control will lockout again.

In the event of under-voltage, the control will take up a waiting position. This is indicated by a flash code of 8 flashes from the press button. When the voltage is within the work area, the flash code stops and the control starts as normal.

Date 9

Diagnosis Flash Codes

False light 2 flashes

No flame when safety time elapses 3 flashes

More than three restarts in the same cycle 4 flashes

Max. waiting time on pre-heater overrun (10 min)

5 flashes

Supply voltage above 264 V a.c. 6 flashes

Supply voltage below 185 V a.c. 8 flashes

Date 10

Nozzle Spray Patterns

Kerosene Nozzles Standard Nozzles

Date 11

Nozzle Spray Angles

Date 12

Construction of a Nozzle