5
G
. 1
0.
03
.0
9
8. Oil connection
The tables apply to heating oil EL 4.8 cSt and the internal diameter of the oil lines specified in the table. 4
brackets, 1 valve and 1 non-return valve were included for resistance with the suction line length. To prevent
possible oil vapours, the dimension X should not exceed a length of 4 m.
•
Connect oil pump to the oil line with the enclosed metal hoses.
•
The pump should be connected with a feed and return line (twin-pipe system).
•
With elevated tanks, the pump can be converted to a single-pipe system.
Assumptions:
kinem. viscosity 6 mm
2
/s at 20°C, T
oil
= 10°C
Additional resistances:
4 x 90° elbows, 1 non-return valve, 1 stop valve
Twin-pipe system
Single-pipe system
For pure single-pipe operation, unscrew the seal with the under-
lying diverter plug
➇
and only rescrew the seal. Close the return
opening
➃
with a seal and metal plug. We recommend that you
use a heating oil filter with return inlet when changing over to a
single-pipe system. This leaves the pump operating in twin-pipe
mode. Install the feed and return burner hoses to the filter. Open
the oil tap on the filter. Start up the system.
Pump
Di
[mm]
H [m]
4
3
2
1
0
-1
-2
-3
-4
Suntec
or
Danfoss
6
21
18
16
13
11
8
5
-
-
8
67
58
50
42
34
25
17
9
-
10
100
100
100
100
82
62
42
21
-
Oil through-
put
[kg/h]
Di
[mm]
H [m]
4
3
2
1
0
-1
-2
-3
-4
up to 2.5
4
77
68
58
49
40
31
22
13
-
6
100
100
100
100
100
100
87
64
18
8
100
100
100
100
100
100
100
100
56
2.5-5.0
4
39
34
29
25
20
16
11
6
-
6
100
100
100
100
100
79
56
32
9
8
100
100
100
100
100
100
100
65
28
5.0-10.0
4
19
17
15
12
10
8
-
-
-
6
98
86
74
63
51
39
28
16
4
8
100
100
100
100
100
100
88
51
14
10.0-23.0
6
42
37
32
27
22
17
12
7
-
8
100
100
100
85
69
54
38
22
6