07/2009 - Art. Nr. 13 022 182A
11
Fuel oil connection
To ensure the operating safety of the
system, the fuel oil supply must be
installed carefully in accordance with
DIN 4755, and in compliance with local
regulations. The burner is fitted with a
self-priming gear pump, which must be
connected as a two-line pump via a fuel
oil filter.
Important:
• Max. supply pressure at pump < 2 bar.
• Maximum intake vacuum at the pump
< 0.4 bar.
CUENOD brochure Art. no. 12002182
must be observed when configuring and
dimensioning systems with a suction
intake device for extra-light fuel oil.
• Connect the supplied fuel oil hoses to
the fuel oil pump and pass them
through the opening in the housing.
• Position the fuel oil bleed filter
(recommended mesh size: 70
μ
m) to
guarantee a connection with no kinks
or strain.
• Make sure that the supply and return
lines are correctly connected.
•
Before commissioning, draw fuel oil
in using a hand pump and check
the fuel oil lines for leaks.
Assembly
Fuel oil and gas connections
Electrical connection
All electrical installation and
connection work must only be carried
out by a suitably qualified electrician.
All VDE regulations and power
supply company regulations and
requirements must be observed.
Electrical connection
• Check to ensure that the power supply
is as specified (230V, 50 Hz single
phase with neutral and earth)
Boiler fuse: 10 A
Electrical connection
The burner and heat generator (boiler)
are connected by a 7-pin connector. It
must be possible to disconnect the
burner from the mains using an
omnipolar shutdown device complying
with the standards in force. The
diameter of the cables connected to this
connector must be between 8.3 and
11 mm.
Connecting the gas train
Connect the gas train to the plugs on the
burner (black to black, grey to grey).
General regulations applying to the
gas connection
• The gas train must only be connected
to the gas mains by a recognised
specialist.
• The cross-section of the gas line
should be of a size designed to
guarantee that the gas input pressure
does not drop below the specified
level.
• A gas ball valve must be fitted
upstream of the gas train (customer
side).
• In Germany, a thermally triggered
shut-off valve (customer side) must be
fitted as specified by the draft
combustion ordinance.
It is the responsibility of the fitter or his
representative to obtain approval for the
system at the same time as the burner is
commissioned. Only the fitter or his
representative can guarantee that the
system meets applicable standards and
regulations. The fitter should be in
possession of the corresponding official
permit awarded by the supplier, and
should carry out the corresponding
sealing tests and purge the system of
air.
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Summary of Contents for NC12 B117
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