Nortek Reznor FSE 100, Installation, Commissioning, Servicing

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PAGE 24 Reznor, FSE, Installation Manual, EN 2020-02, D301160 Iss H
The size of the storage tank must take
account of the estimated consumption
and any quantity price breaks offered by
the oil supplier. It is preferable to install
the tank outside, however, if this is not
practicable and the tank has to be installed
indoors advice must be sought about
its positioning, especially so far as fire
regulations are concerned.
If a separate fire resistant chamber cannot
be provided for indoor installations, a
catchment pit with a capacity 10% greater
than that of the storage tank must be
provided storage tanks can if necessary
be sited on a roof, but this is subject
to special regulations as well as local
authority approval and compliance with fire
regulations, reference to BS 5410 part 2 &
part 1 is strongly suggested.
It is advisable to leave the tank unpainted
on the inside, but to paint the outside with
a proprietary grade of anti-corrosive paint.
WARNING
A galvanised or open topped tank
is strictly not allowed. All oil
storage tanks require a bond.
The Control of Pollution Regulation (Oil
Storage) 2001 should be consulted prior to
installation.
Single pipe system (gravity feed)
For installations where the oil tank is
200mm or more above the level of the fuel
pump the principle of gravity feed may be
used. The draw off point for the supply
to the burner must not be positioned any
lower than 100mm above the bottom of
the tank.
Where a return valve is fitted this must
be tamper proof to prevent inadvertent
operation.
CAUTION
If the valve is closed when the
pump is running the oil pressure
can be increased sufficiently so as
to cause damage to the seals
within the pump.
The return oil should be discharged
(preferably) through an elbow onto a tank
plate situated within the tank, this should
be positioned so as not to introduce air or
air bubbles into the draw off pipe.
Two pipe system
This is used where the oil storage tank is
lower than the pump.
Access for the fuel feed to the burner
should be via a suitable tapping made in
the top of the tank, and the fuel feed pipe
should extend to not less than 100mm
above the bottom of the tank. A none
return valve with a metal to metal seat
should be fitted, especially if the return
pipe work is terminated at a level above the
draw off tube. The non- return valve must
be removable for service and maintenance
purposes, and the return pipe from the
pump must therefore be extended down
into the tank to the same level as the
suction pipe.
The presence of a tamper proof isolating
valve fitted within the return pipe is
only required if there is a risk that oil
will siphon out of the tank if the return
pipe is disconnected at the pump during
maintenance or servicing and if the none
return valve has been omitted.