Grant Vortex Outdoor Module, Инструкции по проектированию, установке и обслуживанию

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3.1 FUEL SUPPLY
3.1.1 FUEL STORAGE
The tank should be positioned in accordance with the building
regulations and recommendations given in BS 5410-1 (Code of
Practice for Oil Firing - Installations up to 45kW output capacity for
space heating and hot water supply purposes). This gives details of
the requirements for suitable oil tank construction, tank installation,
tank bases, fi re protection and secondary containment.
For installations of greater than 45kW output capacity, the tank
should be installed accordance with BS 5410-2.
Oil storage tanks should comply with the following standards:
• Plastic tanks OFT T100
• Steel tanks
OFT T200
The tank capacity should be selected to suit the appliance rated
output. Refer to BS5410-1 for guidance.
3.1.2 FUEL PIPES
Fuel supply pipes should be either copper or steel. Galvanised
pipes or fi ttings should not be used.
Plastic oil supply pipe conforming to BS EN 14125 can be used for
underground pipe runs, but must not be used above ground.
All soft copper pipe connections should preferably be made using
fl ared fi ttings. If compression fi ttings are to be used, a suitable pipe
insert must be fi tted into the pipe end.
Soft soldered connections must NOT be used on oil supply
pipework.
Fuel supply pipework should be of a suitable diameter, depending
on the type of oil supply system being used. Refer to information
given in sections 3.1.3, 3.1.4 or 3.1.5.
Run pipes as level as possible to prevent air being trapped. Take
the most direct route possible from tank to burner whilst locating the
pipe where it will be protected from damage.
Pipes should be supported to prevent sagging and sleeved where
they pass through a wall.
A metal body fuel fi lter of no better than 70 μm (micron) must be
fi tted in the oil supply pipe close to the tank. This should be fi tted
with suffi cient clearance around and below it to allow easy access
for maintenance.
An isolating valve should also be fi tted at the tank, before the fi lter,
to allow the oil supply to be shut off for the fi lter to be serviced.
A second fi lter (15 μm for Kerosene) must be located closer to the
burner to protect the burner pump and nozzle from contamination.
Refer to Figures 3-1 to 3-3.
A remote sensing fi re valve must be installed in the fuel supply line in
accordance with BS540-1.
A fusible wheelhead type combined isolating/fi re valve MUST
NOT be used in place of a remote sensing fi re valve.
The fi re valve must be located outside; just before the oil line enters
the building, with the fi re valve sensor located above the burner.
This clip is fi tted on the wiring panel. This should be fi xed with the
screw provided, using the small hole in the front panel of the boiler.
The fi re valve should be located after the second (15 micron) fi lter,
i.e. between the fi lter and the point at which the oil line enters the
building. Refer to Figures 3-1 to 3-3.
The fi re valve must have an operating temperature of between 90
and 95°C to avoid unnecessary nuisance shut-offs to the oil supply.
A fl exible fuel hose and ¼” isolating valve are supplied lose with
the boiler, to make the final connection to the burner.
If a two-pipe system or deaerator is to be used, the following
additional items will be required:
• Flexible fuel hose
3/8 male x ¼ female, 630 mm long (product
code: 20022601)
• 3/8x ¼” BSP adaptor (product code: 3005720)
These are available to purchase from Grant Ireland.
Metal braided flexible fuel hoses should be replaced ANNUALLY
when the boiler is serviced.
3.1.3 SINGLE PIPE (GRAVITY) SYSTEM 
(REFER TO FIGURE 31)
Head A (m)
Maximum pipe run (m)
10 mm OD pipe 12 mm OD pipe
0.5 10 20
1.0 20 40
1.5 40 80
2.0 60 100
If the storage tank outlet is at least 300 mm above the level of the
level of the burner oil pump, a single pipe (gravity) system should
be used.
The maximum height of the oil level above the burner oil pump
when the tank is full, must not exceed four metres. If this height is
exceeded, a pressure reducing valve must be fi tted in the oil supply
pipe between the tank and the burner oil pump.
The maximum length of pipe run from the tank to the burner is limited
by the minimum head of oil (the height of the tank outlet above the
burner oil pump).
3.1.4 TWO PIPE SYSTEM 
(REFER TO FIGURE 32)
Head A (m)
Maximum pipe run (m)
10 mm OD pipe 12 mm OD pipe
0 35 100
0.5 30 100
1.0 25 100
1.5 20 90
2.0 15 70
3.0 8 30
3.5 6 20
If the storage tank outlet is below the level of the burner oil pump, a
two pipe (sub gravity) system can be used.
The return pipe should be at the same level as the tank outlet,
between 75 to 100 mm above the base of the tank. The return pipe
should be a suffi cient distance from the tank outlet so as to prevent
any sediment disturbed by the return entering the supply pipe from
the tank.
A non-return valve should be fi tted in the supply pipe, along with a
fi re valve and fi lters (refer to section 3.1.2 - fuel pipes). A non-return
valve should also be fi tted in the return pipe if the top of the tank is
Oil Storage and Supply System Page 12
3 OIL STORAGE AND SUPPLY SYSTEM
A galvanised tank must not be used.
Plastic tanks should be stood on a fi rm
non-combustible base that adequately and
uniformly supports the weight of the tank over
its entire base area.
CAUTION
NOTE