4
Absolute Example:
Opt 21.1 (22.1)* .............. set to ............... 100 psi
Opt 21.5 .......................... set to ................... 1
Opt 21.6 (22.6)* .............. set to ............... 110
Opt 21.7 (22.7)* .............. set to ................. 90
Cut Out............................. ........................ 110 psi
Set Point........................... ........................ 100 psi
Cut In................................ .......................... 90 psi
New Set Point
60 psi
Cut Out............................. ........................ 110 psi
Set Point........................... .......................... 60 psi
Cut In................................ .......................... 90 psi
NOTE:
NEW
Cut In and Cut Out values may need
to be entered to achieve desired results.
5 Manual
Modulation
Pressing
AUTO/MAN
key toggles the burner in and out of manual or automatic modulation. To place the
boiler in manual from automatic no password is required.
1. Press
the
AUTO/MAN
key
2. Use the up/down arrow keys to set the firing rate.
3. Press
the
AUTO/MAN
key again to place in automatic
Note:
The firing rate will be shown on the display. This function can be disabled via option
parameter 1.1. To do so requires the suppliers (highest) passcode.
6
Resetting the Control
To reset the Nexus, the
MUTE/RESET
key will have to be pressed and held for three seconds to first silence
(mute) the alarm and then a second press for three seconds to clear the fault. A prolonged key press will do
both.
If for some reason the Nexus detects a fault, the cause of the fault will be displayed if still present. If not
displayed, pressing the
ENGINEERS
key once will reveal the fault, a second press will reveal the fault and
subset in the upper right hand corner. The
ENGINEERS
key is hidden behind the Fireye
logo on the display.
Pressing the logo will show the EK # to the right of which will be the fault # and any subset. Using the
up/down arrow keys scrolls through the EK #’s to view other information.
Summary of Contents for PPC6000 Series
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