11
RN515-520-525:
As for the connection of the pump-preheating unit, see wiring diagrams.
Fan and pump motors direction
Once the electrical connection of the burner is performed, remember to check the rotation of the motor. The motor should rotate in an
counterclockwise direction looking at cooling fan. In the event of incorrect rotation reverse the three-phase supply and check again the
rotation of the motor.
Fuel Oil filters
Fuel Oil filters
RN515-520-525as far as these burners, the oil pumping/pre-heating unit is included
Connecting the oil heating resistors
Double-pipe and single-pipe system
The pumps that are used can be installed both into single-pipe and double-pipe systems.
Single-pipe system:
a single pipe drives the oil from the tank to the pump’s inlet. Then, from the pump, the pressurised oil is driven to
the nozzle: a part comes out from the nozzle while the othe part goes back to the pump. In this system, the by-pass pulg, if provided,
must be removed and the optional return port, on the pump’s body, must be sealed by steel plug and washer.
Double-pipe system:
as for the single pipe system, a pipe that connects the tank to the pump’s inlet is used besides another pipe that
connects the pum’s return port to the tank, as well. The excess of oil goes back to the tank: this installation can be considered self-ble-
eding. If provided, the inside by-pass plug must be installed to avoid air and fuel passing through the pump.
DANGER! Incorrect motor rotation can seriously damage property and injure people.
8 - 12 kW
Fig. 5
18 - 24 kW
Fig. 6
Fig. 7
ELECTRIC MOTOR CONNECTION
Fig. 8
Item
Note
Connection
Max. operating
pressure
Max. operating tempera-
ture
Filtering
degree
Protection
3
GA70501
-
1”
4 bar
90 °C
300
μ
IP65
Item
Note
Connection
Max. operating
pressure
Max. operating tempera-
ture
Filtering
degree
Protection
2
GA70101
-
1”
2 bar
90 °C
300
μ
IP65
R1
R1
230V
400 V
R2
R2
R3
R3
R4
R4
R5
R5
R6
R6
L3
L3
L2
L2
L1
L1
R1
230V
400 V
R1
R2
R2
R3
R3
R4
R4
R5
R5
R6
R6
L3
L3
L2
L2
L1
L1
230V
400 V
W2
U2
V2
U1
V1
W1
W2
U2
V2
U1
V1
W1
L1
L2
L3
L1
L2
L3
Summary of Contents for RN510
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Page 65: ...RWF50 2x RWF50 3x User manual M12922CB Rel 1 0 07 2012...
Page 80: ...16 Note Specifications and data subject to change Errors and omissions excepted...
Page 81: ...KM3 Modulator USER MANUAL M12927CA Rel 1 0 10 2020...
Page 82: ...M12927CA MOUNTING 2...
Page 98: ...1 RWF55 5X RWF55 6X User manual M12926CA Rel 0 1 10 2015...
Page 99: ...2 DEVICE INSTALLATION Fixing system Drilling dimensions...
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Page 121: ...23 Note Specifications and data subject to change Errors and omissions excepted...
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