Nu-Way NDFL100-38, Handbook

Page: 19 / 36

Page 19
NDFL100-38 / BR003211 / Rev. 220900A
Fit a manometer or other approved pressure
measuring instrument at the test point on the
upstream main safety valve. Open the main
isolating manual gas valve. Check there is adequate
gas pressure to enable commissioning to proceed.
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General Notes
In the following sections, reference is made to
checking gas flow rates at the gas meter. This is
the most accurate method of determining
throughputs and should always be used whenever
possible. Information regarding the burner head
gas pressures is shown on pages 20 to 25. These
are intended as a guide to initial burner settings,
but should not be relied upon to offer proof of
actual throughputs.
IMPORTANT After each adjustment, gas flow rate
and flue gas analysis should be checked.
ALWAYS use approved test equipment.
NEVER rely on a visual inspection of the flame as
a guide to combustion quality.
Commissioning Procedure
The Nu-way NDFL burner has been delivered with
initial gas and air settings. These have been applied
to the burner during the test and inspection phase
of its manufacture. Whilst these settings may
enable the burner to operate, they are not intended
to be final settings. A full commissioning
procedure must be competed.
The procedure consists of the following: -
• Entering the pass code.
• Reviewing the air and gas set points.
• Firing the burner.
• Commissioning the burner.
• Completing the procedure.
Refer to page 17 for a functional description of
the Display unit.
Enter the pass code.
Initial settings for air and gas.
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The MPA control will calculate values for the
intermediate points P2 to P8.
Use the (+) key to move the display forwards from
P9 through P1 to P0.
Use the (-) key to move the display backwards from
P0.
To alter the value of any gas setting, move to the
required display point (P9,P1 or P0) and use the
(1) key in conjunction with the (+) or (-) keys.
To alter the value of any air setting, repeat the
above procedure but using the (2) key in
conjunction with the (+) or (-) keys.
The Low Flame point P1 cannot be set at a higher
value than the High Flame point P9.
The initial burner set-up is now complete.
Table of Available Gas and Air Settings.
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Firing the burner
Scroll through to the GAS EL display by pressing
(+), close the burner control circuit. The burner
will now start.
The display will show a number scrolling down
whilst pre-purge takes place, eventually the burner
will fire at position P0 and will remain at this
position until further actions take place.