Air Supply - Grant EUROFLAME 50/70 User, Installation And Servicing Instructions

3.4.6 Two pipe oil supplies
Riello RDB burner - See Fig. 6
1 The fuel pump is supplied for use with a single pipe
fuel supply system. For use on a two pipe system, it is
necessary to fit the By-pass screw (see Fig. 6) into the
tapping in the return port.
2 The By-pass screw is supplied in the boiler accessory
pack.
3 Remove the plastic burner cover (two screws). To
gain access on Kitchen models, it may be necessary to
remove the grey plinth - loosen the screw securing the
right hand side of the plinth, then withdraw the plinth
forward from the right and away from the case.
4 Remove and discard the blanking plug from the return
connection of the pump and fit the By-pass screw
using an hexagonal key.
5 Connect the return oil flexible fuel line to the pump.
3 1
6 Connect the / " to / " BSP adaptor to the flexible
8 4
fuel line.
7 Flexible fuel lines and adaptors are available from
Grant Engineering (UK) Ltd.
8 Boiler House models - Fit the burner as described in
section 4.6.
8
1
1 Oil inlet connection
2 Return connection
3 By-pass screw
4 Pressure gauge connection
Fig. 6 - Riello RDB pump
3 - GENERAL BOILER INFORMATION
7
6
5
4
3
2
5 Pressure adjuster
6 Vacuum gauge connection
7 Solenoid
8 Supply to nozzle
Euroflame Oil Boilers
Electricity supply
3.5
1 A 230/240 V ~ 50 Hz mains supply is required.
The boiler must be earthed.
2 The supply must be fused at 5 Amp and there must
only be one common isolator for the boiler and
control system, and it must provide complete
electrical isolation.
3 A fused double pole switch or a fused three pin
plug and shuttered outlet socket should be used for
the connection.
4 The power supply cable should be at least 0.75 mm²
PVC as specified in BS 6500, Table 16.
5 All the wiring external to the boiler must be in
accordance with the current I.E.E. Wiring
Regulations.
6 Any room thermostat or frost thermostat used must
be suitable for use on mains voltage.
7 In the event of an electrical fault after installation
of the boiler, the following electrical system checks
must be carried out:- Short circuit, Polarity, Earth
continuity and Resistance to earth.
3.6

Air supply

See Figs. 7 and 8
A sufficient permanent air supply to the boiler should be
provided:
a For proper combustion of fuel and effective discharge
of combustion products to the open air.
b For the ventilation of any confined space in which
the boiler is installed to prevent overheating of the
boiler any equipment in and near the boiler.
c For the satisfactory operation of any draught
stabiliser which may be fitted.
It should be both the designer's and installer's concern
that the air required for these functions be introduced so
as to cause as little discomfort as possible to the building
occupants and thus to offer them the least temptation to
obstruct the ventilators.
Further details may be obtained from BS 5410:1:1997.
Notes:
For a boiler fitted in a compartment, which is
ventilated as shown, no additional allowance is
necessary.
Open flue - Extract fans, where needed, should
be in accordance with section 4.4.7 in BS 5410
Part 1 1997.
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