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7800 SERIES S7800A KEYBOARD DISPLAY MODULE
Selectable
Message/Display
Valv/Start
Jumper 1
Jumper 2
Jumper 3
Amp Type
Flame Response
Purge Time
a
European Approved Controls.
b
Preignition Interlock Terminal 17 or 20 is model dependent.
Expanded Annunciator Messages (Table 4)
The Expanded Annunciator (EA) may or may not be
connected because it is an optional device. If the EA is not
connected, a display message of "(EA not connected)" is
65-0090—4
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Table 3. Selectable Messages (Continued).
Description
T21 Interrupted/Intermittent
Pilot Valve, First Stage Oil
Valve or Start Input.
Pilot Flame Establishing
Period (PFEP).
First Safety Time (for RM/
EC7850).
Pilot Valve.
Main Trial Time (for RM/
EC7850).
Start-up Airflow Switch (AFS)
check.
Defines type of amplifier
installed.
Amplifier Flame Failure
Response Time (FFRT) in
seconds.
Timing value of purge card.
10
Possible States/ Range
(Terminals)
= 1 or 0
INTACT/CLIPPED
INTACT/CLIPPED
INTACT/CLIPPED
INTACT/CLIPPED
INTACT Disabled/CLIPPED
Enabled
STANDARD/AMP-CHECK/
SHUTTER
.8s, 1s, 2s, or 3s
mm:ss
shown. If the EA is connected, display messages are shown;
see Table 4 (Note that 1 means ON and 0 means OFF). When
accessing Expanded Annunciator messages, follow the same
operations as used with the Selectable messages.
Comments
Indicates if output is on or off,
energized or de-energized.
Display shows state of PFEP
jumper. If jumper is intact,
7800 SERIES was 10 second
PFEP. If jumper is clipped,
7800 SERIES has 4 second
PFEP.
Display shows state of First
Safety Time (EC7850) jumper.
If jumper is intact, EC7850 has
5 second First Safety Time. If
jumper is clipped, the EC7850
has 3 second First Safety
Time.
Display shows state of Pilot
Valve (terminal no. 21). If
jumper is intact, RM7800G has
Intermittent Pilot Valve. If
jumper is clipped, RM7800G
has 15 or 30 second
Interrupted Pilot Valve.
Display shows state of Main
Trial Time (EC7850)Valve
(terminal no. 21). If jumper is
intact, EC7850 has 5 second
Main Trial Time. If jumper is
clipped, EC7850 has 3 second
Main Trial Time.
Display shows state of Start-up
AFS check jumper. If jumper is
clipped, RM7800 AFS check is
enabled and if jumper is intact,
AFS check is disabled.
Display shows type of flame
detection system installed (i.e.,
as STANDARD, AMP-CHECK/
AMPLI-CHECK™ and
SHUTTER/ Dynamic Self-
Checking).
—
Two seconds to 30 minutes.
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