2-6 750-166
TABLE 3—SELECTABLE MESSAGES (Continued).
Selectable
Message/Display Description
Possible States/Range
(Terminals) Comments
LowFire Sw T18 Low Fire Switch. 1 or 0 Indicates if input is on or off,
energized or deenergized.
HighFire Sw T19 High Fire Switch. 1 or 0 Indicates if input is on or off,
energized or deenergized.
PreIgn ILK T20 Preignition Interlock. 1 or 0 Indicates if input is on or off,
energized or deenergized.
Valv/Start T21 Interrupted/Intermittent
Pilot Valve. First stage oil
valve or start input.
1 or 0 Indicates if output is on or off,
energized or deenergized.
Jumper 1 Pilot Flame Establishing
Period (PFEP).
INTACT/CLIPPED Display shows state of PFEP
jumper. If jumper is intact, the
CB 780/CB 784 will have a
10 second PFEP. If jumper is
clipped, the CB 780/CB 784
will have a 4 second PFEP.
Jumper 2 NOT USED
JUMPER 3 Interlock Check (IC). INTACT Disabled/
CLIPPED Enabled
Display shows state of Start-
Up Interlock Check (IC)
jumper. If jumper is clipped,
CB 780/CB 784 IC check is
enabled. If jumper is intact,
IC is disabled.
Amp Type Defines type of amplifier
installed.
NORMAL/AMP-
CHECK/SHUTTER
Display shows type of flame
detection system installed (i.e.,
as NORMAL/Standard, AMP-
CHECK/AMPLI-CHECK™,
and SHUTTER/Dynamic Self-
Checking).
Flame Response Amplifier Flame Failure
Response Time (FFRT) in
seconds.
3 seconds
Purge Time Timing value of purge card. mm:ss 30 seconds to 2-1/2 minutes
Mfg Code Manufacturing code is five
digit code representing date
code.
nnnnn
SW Rev Software revision and
version code for Keyboard
Display Module and
CB 780/CB 784.
nnnn/nnnn First four digits represent the
software revision of the
Keyboard Display Module.
Second four digits represent the
software revision of the relay
module.
Expanded Annunciator First level prompt for
Expanded Annunciator
information and has subset
level (Table 5).
See Table 5.
Remote Command Status of firing rate
command from remote
controller.
NONE/HOLD
HF/LF
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