Bosch Appliances 25/32kW, 18/25, 12/18 instruction manual OIL Supply, G J, Fuel Flow Rate Head

PRE - INSTALLATION

A	- Oil storage tank	H	- Oil supply pipe
B	- Isolating valve	J	- Oil pump
C	- Oil strainer & water seperator	K	- Full base (plastic tanks)
D	- Fire valve to BS5410	L	- Non-return valve
E	- External casing	M	- De-aerator
F	- Fire valve sensor	N	- Oil filter (16µm max filtration size)

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.		.
	1m min

a)

		A				F	300mm min.	max.(13ft)
K
								4m
		B C	H	B D	B N G J
MAXIMUM PIPE RUN FOR SINGLE PIPE GRAVITY FEED SYSTEM						E
HEAD	10mmØ	12mmØ	HEAD	10mmØ	12mmØ
0.5	12	30	2.5	62	100
1.0	25	69	3.0	74	100
1.5	37	91	3.5	87	100
2.0	49	100	4.0	99	100
					1m min	.

OIL SUPPLY

This appliance is suitable for kerosene (28 second oil) only, no other fuel must be used.

OIL SUPPLY:

•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).

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

b)

L

A

B C

L

150mm

K

BD

HB

F G

NJ

E

3.5m (11.5ft) max.

de-aerator (M) and oil pump (J).

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).

Atop feed oil tank fitted with a de-aerator 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.

9

MAXIMUM PIPE RUN FOR DOUBLE PIPE SUB-GRAVITY FEED SYSTEM

HEAD	10mmØ	12mmØ	HEAD	10mmØ	12mmØ
0	50	100	2.0	26	66
0.5	44	100	2.5	20	50
1.0	38	95	3.0	14	37
1.5	32	80	3.5	8	22

F

G

M

c)				A													max.
																	(11.5ft)
				B	C	H	B	D						J
																	3.5m
					K						1m min		.		E
MAXIMUM PIPE RUN FOR SINGLE PIPE SUCTION LIFT WITH DE-AERATOR
	FUEL FLOW RATE									FUEL FLOW RATE
HEAD	2.5kg/h	5kg/h	10kg/h		10kg/h		HEAD		2.5kg/h			5kg/h		10kg/h		10kg/h
	8mmØ	8mmØ	8mmØ		10mmØ				8mmØ			8mmØ		8mmØ		10mmØ
0	100	55	26		100		2.0		60			30		14		65
0.5	95	45	23		100		2.5		45			25		11		50
1.0	80	40	20		90		3.0		35			15		8		35
1.5	70	35	17		75		3.5		25			10		5		20

The table and illustration above is a guide only and does not in any way override the de- aerator manufacturers instructions.

Pipework

Use copper pipe of the correct diameter according to the information shown opposite. Use flexible hoses to connect to the oil pump (J).

Lay the oil supply pipe (H) as straight and level as possible to avoid air pockets and unnecessary friction losses. Route away from the boiler access door or other hot surfaces.

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 seperator (C) to 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.

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 appliance case.

A capillary type valve provides a neat and 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.

OIL SUPPLY

INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR HEATSLAVE EXTERNAL 12/18-18/25-25/32 8 716 113 389b (09/07)