Riello 3438964 Installation, Use And Maintenance Instructions page 39

Heavy oil burners
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  • ENGLISH, page 35
3.1
HEAVY OIL SUPPLY LINE
RING SUPPLY LINE
For heavy oil with viscosity up to 50°E/50°C.
1 - Tank (heated for heavy oil)
2 - Filter (with resistance for oil > 7°E/50°C)
3 - Forwarding pump
4 - Control manometer
5 - Shutter valves (in couple) 
excluding the burner
WARNING
- The oil could easily flow through the pipes if those are properly seized, protected and heated (by electricity,
steam or hot water).
- The forwarding pump capacity should be all the least double of that of the burner pump.
If several burners are supplied through the same ring supply line, the forwarding pump should have a capacity
of approx. 30% more than the sum of the single burners outputs.
- For starting-up: after excluding the burner by the shutter valves 5) let the oil flow into the supply ring up to reach
the required circulation; after than open the valves and supply normally the burner.
GRAVITY SUPPLY LINE
Only for oil with max. viscosity up to 7°E/50°C.
Attention:
before placing the burner in operation, ensure that the return line is open. Any obstruction may damage the pump
seal.
2915844
6 - Burner (provided with kit for heavy oil code no. 3000721)
7 - Pressure adjuster
8 - Filter (with resistance for oil > 7°E/50°C)
9 - Burner pump
Pump priming:
loose the tap of the vacuometer plug (6,
Fig. 1) and wait for the oil flow.
H: Difference in the pipes height
L: Total length of the suction tube
D2735
D2734
5
GB
L meters
H
meters
ø 1"
ø 1 1/4"
0
2
10
0.5
3
11
1
4
12
1.5
5
13
2
6
14

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