Danfoss BFPM 20 Data sheet

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Data sheet

Oil Motor Pump type BFPM 20

Application

Function

The BFPM range is a series of Danfoss oil pumps
in combination with a highly efficient permanent
magnet motor.
The BFPM Electronic Controller must be used for
controlling BFPM motor pumps (see separate
data sheet for BFPM Electronic Controller).

BFPM 20 is designed for small domestic oil
burners up to 24 l/h.

O

BFPM 20 features:

• Light oil and kerosene

• 1- or 2-pipe operation

• 1-stage

• Built-in pressure regulator

• Cartridge filter

© Danfoss | 2019.05

Pressure Suction Return

From the suction inlet (S) oil is drawn through the
filter (H) to the gear set, where the pressure is
increased.
By means of the diaphragm (D) in the pressure
regulator (T), the pressure is kept constant at the
value set on adjustment screw (P1).
In 2-pipe systems the excess oil is led back to the
return outlet (R) and the tank.
In 1-pipe systems with plugged return outlet (R)
and screw (A) removed, the oil is returned
internally to the gear set (see figure).

Bleeding

In 2-pipe systems the pump is self-priming, i.e.
bleeding is performed via the constriction (O) to
the return outlet (R).
In 1-pipe systems with plugged return outlet (R),
bleeding must be performed through the nozzle
outlet (E) or the pressure gauge port (P).

Warranty

For pumps used outside the stated technical data
and used with oil containing abrasive particles
Danfoss cannot give any warranty.

VD.DK.M4.02| 1

Data sheet Oil Motor Pump type BFPM 20

Identification

Technical Data

BFPM 2 0 L 3 L

L: left hand nozzle outlet

3: capacity 24 l/h

L: left hand rotation

0: without solenoid valve

2: cartridge filter, pressure adjustment on front

Nozzle capacity at 4.3 cSt., 10 bar, 2800 min

Oil types

-1

Standard fuel gas oil and fuel gas oil acc. to DIN V
51603-6 EL A Bio-10 (Max. 10% FAME)

Viscosity range (measured in suction inlet) (1.3) 1.8 to 12.0 cSt. (mm2/s)

Filter area/mesh 11/ 20 0 cm2/µm

Pressure range

1)

7 to 20 bar

Default setting 10 ±1 bar

Max. pressure in suction inlet/return outlet 2 bar

Speed 400 - 3400 min

-1

Ambient/transport temperature -20 to +70° C

Temperature of medium 0 to +70° C

Power supply/drive BFPM motor

1)

Max. 12 bar at 1.3 cSt., max. 15 bar at 1.8 cSt.

2)

Warning: Do not connect BFPM motor directly to 230 V/50 Hz power supply!

2)

230 V switched from controller

Nozzle capacity Power consumption

2 | © Danfoss | 2019.05

VD.DK.M4.02