OIL SUPPLY
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR HEATSLAVE 12/18-18/25-25/32
6 720 802 432 issue A 04/2012
10
P
R
E -
IN
ST
AL
LA
TION
OIL SUPPLY
OIL SUPPLY :
•
This appliance is suitable for kerosene (28
second oil) only, no other fuel must be used.
• Plastic or steel tanks should be installed to
BS 5410. A steel tank should conform to
BS 799: part 5 and have a slope of 1 in 24
away from the outlet valve with a sludge cock
at its lower end.
• Do not use galvanised steel tanks or
pipework for the oil supply system.
• Do not use soldered joints on the oil
supply pipework.
a) Single pipe gravity feed system:
The oil storage tank (A) must be positioned so
that the oil level does not exceed 4 metres above
the level of the burner oil pump (J) and in addi-
tion the oil level must be at least 300mm above
the oil pump (J). Where the maximum oil level in
the oil storage tank exceeds 4 metres, a head
breaking device must be installed between the
tank (A) and the burner oil pump (J).
b) Double pipe sub-gravity feed system:
Maximum suction height 3.5 metres. Non-return
valves must be fitted to the inlet and return oil line
between the oil pump (J) and oil storage tank (A).
A
F
B N G
J
4m max.
K
a)
H
300mm
min
.
B D
B C
MAXIMUM PIPE RUN FOR SINGLE PIPE GRAVITY FEED SYSTEM
B
A
D
B
C
E
K
3.5m max.
L
L
b)
H
F G
B
150mm
MAXIMUM PIPE RUN FOR DOUBLE PIPE SUB-GRAVITY FEED SYSTEM
N
J
E
A
- Oil storage tank.
B
- Isolating valve.
C
- Oil strainer & water separator.
D
- Fire valve to BS 5410.
E
- External wall.
F
- Fire valve sensor.
G
- Oil burner.
H
- Oil supply pipe.
J
- Oil pump.
K
- Full base (plastic tanks).
L
- Non-return valve.
M
- De-aerator.
N
- Oil filter (70μ
m
max filtration size)
NOTE: All dimensions are in metres unless stated otherwise.
The maximum pipe run figures are based on using copper pipe with an inside diameter of
2mm less than the Ø.
HEAD
10mmØ
12mmØ
0.5
12
30
1.0
25
69
1.5
37
91
2.0
49
100
HEAD
10mmØ
12mmØ
2.5
62
100
3.0
74
100
3.5
87
100
4.0
99
100
HEAD
10mmØ
12mmØ
0
50
100
0.5
44
100
1.0
38
95
1.5
32
80
HEAD
10mmØ
12mmØ
2.0
26
66
2.5
20
50
3.0
14
37
3.5
8
22