Technical data

11
8.11 The following components should be fitted in the fuel line
between the storage tank and burner:
1. A manual isolating valve installed as close to the tank as pos-
sible.
2. A fire valve in accordance with BS799: Part 2 as shown in Fig. 9.
The fire valve should be fitted externally with a fire detection ele-
ment located within the appliance case. Use of a capillary type
valve will allow a neat and simple installation. A suitable valve is
the KBB manufactured by Teddington Controls Limited. Two
inline fire valve clips have been provided next to the burner on
the right hand side of the external duct, shown in Fig. 3, to allow
a fire valve element to be mounted. 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 pro-
tection device.
NOTE: The fire valve should be positioned at least 1 metre
away from the appliance.
3. A paper element filter complying with the requirements of
BS799, Parts 2, 3 and 4 should be fitted in the fuel line between
the fire valve and the isolating valve but not within the appli-
ance casing.
TABLE 4 Single pipe gravity feed system
MAXIMUM ALLOWABLE PIPE RUN
HEAD (metres)
(metres)
8 mm inside dia. pipe 10 mm inside dia. pipe
(10 mm O.D. copper) (12 mm O.D. copper)
0.5 10 20
1.0 20 40
1.5 40 80
2.0 60 100
TABLE 5 Double pipe sub-gravity feed system
MAXIMUM ALLOWABLE PIPE RUN
HEAD (metres)
(metres)
8 mm inside dia. pipe 10 mm inside dia. pipe
(10 mm O.D. copper) (12 mm O.D. copper)
0 35 100
0.5 30 100
1.0 25 100
1.5 20 85
2.0 15 70
2.5 11 50
3.0 8 30
3.5 6 20
Fig. 10. Oil pump.
B. Danfoss BFP 11 Oil Pump.
A. Danfoss BFP 41.
C. Suntec AS47C Oil Pump.
Cartridge filter
12
3
4
4a
5
6
1
2
3
4
5
6
A
1 INLET
2 RETURN
3 BLEED AND PRESSURE
GAUGE PORT
4 VACUUM GAUGE PORT
5 PRESSURE ADJUSTMENT
6 NOZZLE OUTLET
To convert to a single pipe system, remove plug 4a and remove the
grub screw and insert plug 4a back into pump. Remove the return
pipe,
1
/
4
inch nipple and washer and insert the
1
/
4
inch male plug to
blank off the return port.
To convert to a single pipe system: Remove the pump front cover,
remove the changeover screw (A) nearest to ports 1 and 2.
Remove the return pipe,
1
/
4
inch nipple and washer and insert the
1
/
4
inch male plug to blank off the return port.
Note: When removing the pump front cover ensure that a suitable
receptacle is placed below the pump to catch the oil residue.
To convert to a single pipe system, remove the return pipe,
1
/
4
inch
nipple and washer from (2). Remove the grub screw (A) from the
threaded hole (B). Insert the
1
/
4
inch male plug to blank off the return
port.
1
2
3
3
4
5
B
A
Fig. 11. Oil pipe installation.
A. Double pipe system.
B. Single pipe system.
Return
Inlet
Burner
oil pump
Inlet
Return
Flexible oil hose
Supply
from tank
Return
to tank
Supply
from tank
Inlet
Flexible oil hose
Burner
oil pump
Connection
block
Connection
block