9
E. .02.1999 • G. 04.04.24
15 Oil connection
The oil line must end close enough to the burner to ensure that the flexible oil hose is not under tension
when connected. Care should be taken to ensure that the burner can easily be moved into the servicing
position.
It is essential that an oil filer is fitted upstream of the oil pump.
The tables for dual/single-pipe installation show the maximum possible piping lengths
dependent upon 3 factors assuming use of fuel oil type EL 4.8 cST.
• Height difference between pump and tank
• Nozzle flow rate or pump type
• Pipe diameter
The calculated resistance for the supply lines include allowance for 4 elbows, 1 valve and 1 check valve for
the resistance.
The measure "X" should not exceed a length of 4 m, because of eventual degasifications of the oil.
Two-pipe system
Danfoss BFP 52 Suntec AT2 55
Suntec AP2
H (m) L (m) L (m) L (m)
∅ 6 mm ∅ 8 mm ∅ 10 mm ∅ 6 mm ∅ 8 mm ∅ 10 mm ∅ 6 mm ∅ 8 mm ∅ 10 mm
4.0 21 67 100 22 75 150 22 75 150
3.0 19 59 100 19 66 150 19 66 150
2.0 16 51 100 16 56 141 16 56 141
1.0 13 42 100 13 47 118 13 47 118
0.5 12 38 94 12 42 107 12 42 107
0 11 34 84 11 38 96 11 38 96
-0.5 10 30 74 9 33 84 9 33 84
-1.0 8 26 64 8 29 73 8 29 73
-2.0 6 18 44 5 19 51 5 19 51
-3.0 3 10 24 2 10 28 2 10 28
-4.0 1 2 4 0 0 5 0 0 5
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