Oil Supply - Bosch GREENSTAR HEATSLAVE EXTERNAL 18/25 Instruction Manual

8 716 113 389d 30/3/10 14:01
A - Oil storage tank
B - Isolating valve
C - Oil strainer & water separator
D - Fire valve to BS5410
E - External casing
F - Fire valve sensor
G - Oil burner
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.
a)
K
MAXIMUM PIPE RUN FOR SINGLE PIPE GRAVITY FEED SYSTEM
HEAD 10mmØ 12mmØ
0.5 12
1.0 25
1.5 37
2.0 49 100
b)
150mm
MAXIMUM PIPE RUN FOR DOUBLE PIPE SUB-GRAVITY FEED SYSTEM
HEAD 10mmØ 12mmØ
0 50 100
0.5 44 100
1.0 38
1.5 32
c)
MAXIMUM PIPE RUN FOR SINGLE PIPE SUCTION LIFT WITH DE-AERATOR
FUEL FLOW RATE
HEAD 2.5kg/h 5kg/h
8mmØ 8mmØ 8mmØ 10mmØ
0 100 55
0.5 95 45
1.0 80 40
1.5 70 35
The table and illustration above is a guide only and does not in any way override the de-
aerator manufacturers instructions.
10

OIL SUPPLY

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Page 10
H - Oil supply pipe
J - Oil pump
K - Full base (plastic tanks)
L - Non-return valve
M - De-aerator
N - Oil filter (16µm max filtration size)
A
B C H B D
HEAD 10mmØ
30 2.5 62
69 3.0 74
91 3.5 87
4.0 99
B D
L
A
B C
L H
K
HEAD 10mmØ
2.0 26
2.5 20
95 3.0 14
80 3.5 8
M
A
B C H B D
K
10kg/h 10kg/h HEAD 2.5kg/h
8mmØ
2.0 60
26 100
23 100 2.5 45
20 90 3.0 35
3.5 25
17 75
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR HEATSLAVE EXTERNAL 12/18-18/25-25/32
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
F
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
B N G J
tank (A) and the burner oil pump (J).
b) Double pipe sub-gravity feed system:
E
Maximum suction height 3.5 metres. Non-return
12mmØ
valves must be fitted to the inlet and return oil
100
line between the oil pump (J) and oil storage
100
tank (A).
100
100
c) Single pipe suction lift with de-aerator
Maximum suction height 3.5 metres. The oil
tank (A) must be positioned below the oil pump
(J). Create an inlet and return loop between the
de-aerator (M) and oil pump (J).
F G
A non-return valve must be incorporated within
the de-aerator or fitted to the oil line between
the oil storage tank (A) and the de-aerator (M).
A top feed oil tank fitted with a de-aerator
B J
N using an internal non-return valve should have
any non-return valves fitted in the base of the
tank to the suction line removed to assist
purging air from the oil line.
E
Pipework
Use copper pipe of the correct diameter
12mmØ
according to the information shown opposite.
66
Use flexible hoses to connect to the oil pump (J).
50
Lay the oil supply pipe (H) as straight and
37
level as possible to avoid air pockets and
22
unnecessary friction losses. Route away
from the boiler access door or other hot
F
surfaces.
G
Install a manual isolating valve (B) to the oil
supply pipe (H), as close to the oil storage
tank (A) as possible.
Fit an oil strainer and water separator (C) to
J the oil supply pipe, near the oil storage tank.
Fit an additional oil filter (N, 16µm max
filtration size) close to the boiler, but not
inside the boiler casing.
E
Fit a fire valve in accordance with BS 5410.
The fire valve (D) must be fitted externally
at least 1 metre from the appliance with the
fire valve sensor (F) located within the
FUEL FLOW RATE
5kg/h 10kg/h 10kg/h
appliance case.
8mmØ 8mmØ 10mmØ
A fire valve with a shut-off temperature of
30 14 65 85 o C or higher must be fitted to avoid
25 11 50
nuisance shut offs.
15 8 35
A capillary type valve provides a neat and
10 5 20
simple installation. Alternatively, a fusible
link or electrical system may be used.
Under no circumstances should a
combination isolating/fire valve be used
as the sole fire protection device.
8 716 113 389d (03/2010)