Engineering Tomorrow | Danfoss
User Manual for Danfoss models including: BFP 52E Fuel Pump, BFP 52E, Fuel Pump
2024-06-03 — From the suction inlet (S) fuel is drawn through the filter (H) to the gear set, where the pressure is increased. By means of the diaphragm (D) in the.
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DocumentDocumentData sheet Fuel Pump type BFP 52E - size 3 and 5 Compatible with heating oil up to 100% biodiesel (FAME and UCOME) Application Function BFP 52E fuel pumps - size 3 and 5 are designed for small/medium-sized 2-stage domestic fuel burners up to 42 l/h. BFP 52E features: · Light oil, kerosene and biofuel blends hereof · 1 or 2-pipe operation · 2-stage · Two built-in pressure regulators · Solenoid valve cut-off · Cartridge filter · Bio compatible pressure and solenoid valve (Bio100 - version) © Danfoss | 2023.03 Pressure Suction Return From the suction inlet (S) fuel 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 for stage 1 (T1), the pressure is kept constant at the value set on adjustment screw (P1). When voltage is applied to the NC-valve, it opens and releases fuel to the nozzle outlet. When voltage is applied to the NO-valve, it closes and puts the pressure regulator (T1) out of function. The pressure now rises to the pressure regulator (T2) value for stage 2 set on adjustment screw (P2). In 2-pipe systems the excess fuel 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 fuel is returned internally to the gear set (see figure). Cut-off function, solenoid valve When the burner stops, the voltage to the solenoid valves is cut off. The NO-valve opens and the NC-valve closes and cuts off the fuel flow to the nozzle outlet immediately. 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 fuel containing abrasive particles Danfoss cannot give any warranty. Note! Do not mount the pump with the solenoid valve pointing downwards. The solenoid valve must be replaced after 250.000 operations or 10 years (approved life expectancy). By changing the materials of the components within our pumps, in relation to the different types of fuels - we ensure all product components are 100% bio compatible. AI131186455414en-010401 | 1 Data sheet Identification Technical data Fuel Pump type BFP 52E, size 3 and 5 BFP B 52EL5L R: right hand nozzle outlet L: left hand nozzle outlet 3: capacity 24 l/h 5: capacity 42 l/h R: clockwise rotation L: counter-clockwise rotation E: use electrical air damper 2: two solenoid valves 5: two stages, two pressure regulators B: biofuel ready for up to 100% Nozzle capacity at 4.3 cSt., 10 bar, 2800 min-1 BFP 52E Fuel type Viscosity range (measured in suction inlet) 1) Filter area/mesh Pressure range, stage 1 1) 2) Pressure range, stage 2 1) 2) Default setting, stage 1 Default setting, stage 2 Max. pressure in suction inlet/return outlet Speed Max. starting torque Ambient/transport temperature Temperature of medium Coil power consumption Rated voltage (other voltages on request) Coil enclosure Shaft/neck 3 5 Standard fuel according to DIN EN 51603-1 and biofuel according to DIN EN 51603-6;-8 and EN14214 (1.3) 1.8 to 12.0 cSt. (mm2/s) 11 cm2/200 µm 7 to 15 bar 10 to 25 bar 10 ±1 bar 13 ±1 bar 2 bar 2400 to 3450 min-1 1400 to 3450 min-1 0.1 Nm 0.12 Nm -20 to +70° C 0 to +70° C 9 W 230 V, 50/60 Hz IP 40 EN 225 1) Max. 12 bar at 1.3 cSt., max. 15 bar at 1.8 cSt. 2) If blend oil used, technical data can be different Nozzle capacity Operating torque Power consumption 2 | © Danfoss | 2023.03 AI131186455414en-010401 Data sheet Connections Fuel Pump type BFP 52E, size 3 and 5 Example shows BFP 52E L5L P1: Pressure adjustment stage 1 P2: Pressure adjustment stage 2 S: Suction inlet G 1/4 R: Return outlet G 1/4 E: Nozzle outlet G 1/8 P: Pressure gauge port G 1/8 V: Vacuum gauge port G 1/8 H: Filter Note! Shaft rotation, location of nozzle outlet and other connections are seen from shaft end. RH: R-rotation LH: L-rotation Change-over and Filter Replacement H: Filter A: 2-pipe operation, with screw 1-pipe operation, without screw Dimensions AI131186455414en-010401 © Danfoss | 2023.03 | 3 Data sheet Fuel Pump type BFP 52E, size 3 and 5 Additional documentation on burner components is available on http://danfoss.com/ 4 | © Danfoss | DCS-SGDPT/DK | 2023.03 AI131186455414en-010401