Rwf40 Recommended Parameters; To Enter A New Parameter; Configuration Values - Nu-Way XGN Series Handbook

RWF40 Recommended Parameters

Parameter Display
Proportional
Pb1
band
Derivative
Dt
time
Reset time Rt
Actuator time Tt
Switch on
Hys 1
threshold
Upper off
Hyst 3
threshold
Detector:
SCL
range start
Detector:
SCH
range end

To enter a new parameter

The parameters dictate the way in which the burner
firing rate alters in response to changes in the
pressure/temperature of the boiler.
A major factor that determines the need to change
the parameters is if the burner is fitted to a steam
or hot water boiler. The table below indicates the
parameter and it's setting for steam and hot water
boilers. It must be emphasised that it is only an
indication and any departure from these settings
should be made in small increments, with time
given to see how the burner is reacting to the
changed parameter.
Press and hold the PGM button down until the
green set point figure changes to an AL, the larger
upper figures show the value.
Use the up/down buttons to set the new value,
press the PGM button to enter the value and
change to the next screen. To cancel an entry press
exit. Scroll through the screens, (PGM button)
modifying any value found to be in error (up/down
buttons). At the last screen the PGM button will
return the controller to the original operating
display.
Hot
Steam
Water
10 1
10 5
50 20
Damper running
time between low &
high flame
0 -0.2
999.9 0.2
0 0
100 25
XGN Handbook
At any point in the procedure the original
operating display can be obtained by letting the
unit time out, the value in the display at the time
out will be accepted.
A value can only be altered within the permitted
range of that parameter. All other parameters must
remain as supplied.
Note: The detector range parameters SCL & SCH
are given as °C for Hot Water (temperature) and
bar for Steam (pressure).

Configuration Values

The configuration values are factory set specific to
the installation, they therefore rarely need to be
altered and are provided for reference only.
The codes control measurement acquisition, con-
troller type etc.
RWF40 C
ONFIGURATION
Display Hot Water
C111
C112
C113
V
ALUES
Steam
9031 G000
5010 0000
0110 0110
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