21
®
The Display
The display is a 2 line 20 character per line dot matrix vacuum fluorescent unit allowing the use of
plain text messages for most display parameters. The display must be fitted to allow commissioning
of the system but once commissioning has been completed, the display may be removed, providing
either the control unit lamps and external switches and/or lamps are fitted for fault indication and
reset.
Ensure that the power is off when connecting or disconnecting the display.
Description of keys
Description of display parameters
The Fireye display will indicate all display information as plain text messages, with the exception of
the engineer’s key values. Engineer’s key information is found by pressing the Fireye Logo. Press
once to see status and subset information and again to see EK values. Press again to return to normal
display
FUEL 1-3
Indicates the position of each drive (up/down motor or inverter)
AIR 1-4
connected to the system. For a motor drive, the display may be in
OPTION 1-5
terms of angular degrees or percentage opening. For an inverter the
display is 0 – 999.
When the burner is on, only the drives currently firing will be available.
MEASURED
Indicates the measured pressure or temperature of the boiler, according to
VALUE
the zero and span values entered as option parameters. If the input cur
rent drops below 3.5mA, the display will flash "Lo". If the input current
rises above 21mA, the display will flash "Hi". This display parameter is
not available if tracking modulation input is selected.
The UP/DOWN
keys are used to
adjust the fire rate
in the manual mod-
ulation mode.
In commission
mode, they are
used for data entry.
The SCROLL keys are used
to select the current parame-
ter for the display.
In the commission mode,
these keys select which
parameter is to be adjusted
with the use of the UP/DOWN
keys.
Press the FAULT
MUTE key to mute
(open) the alarm
relays.
Hold the FAULT
MUTE key down
for approximately
two seconds to
remove any cleared
faults.
Selects manual
burner modulation.
The UP/DOWN keys
may be used to alter
the firing rate.
