Table 5-Expanded Annunciator - Honeywell 7800 Series Manual
Relay module
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- Product data (64 pages) ,
- Manual (44 pages) ,
- Installation instructions manual (40 pages)
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RM7838B
OPERATION
Selectable Message
(Second Line)
◊ Expanded Annun.
◊ Expanded Annunciator (EA not connected)<
◊ Current Status (CS:)±
◊ Valve Closure (Valve Close)
◊ Burner Switch (Burner Sw)
◊ Operating Control (OperControl)
◊ Auxiliary Limit (Aux Limit 1)
◊ Auxiliary Limit (Aux Limit 2)
◊ Low Water Cutoff (LWCO)
◊ High Limit (High Limit)
◊ Auxiliary Limit (AuxLimit 3)
◊ Oil Selection Switch (Oil Select)
◊ High Oil Pressure Switch (Hi OilPres)
◊ Low Oil Pressure Switch (LowOilPres)
◊ High Oil Temperature Switch (Hi OilTemp)
◊ Low Oil Temperature Switch (LowOilTemp)
◊ Atomizing Switch (Atomize Sw)
◊ Gas Selection Switch (Gas Select)
◊ High Gas Pressure Switch (Hi GasPres)
◊ Low Gas Pressure Switch (LowGasPres)
◊ Airflow Switch (Airflow Sw)
◊ Auxiliary Interlock (Aux ILK 4)
◊ Auxiliary Interlock (Aux ILK 5)
◊ EA Fault Code
◊ Software Revision (SW Rev.)
1
Expanded Annunciator Diagnostic Current Status Messages can be reviewed in Table 15.
RUN/TEST SWITCH FUNCTIONS
The Run/Test switch is located on the top side of the
RM7838B, see Fig. 27. The Run/Test Switch allows the
burner sequence to be altered as follows:
1. In Purge Drive To High Fire Position, the Run/Test
switch, when placed in the TEST position, will hold in
PURGE with the firing rate motor in the High Fire position.
2. During the time measured PURGE sequence, the Run/
Test switch, when placed in the TEST position, will cause the
PURGE timing to stop. The firing rate motor will be in the
High Fire position.
3. In Purge Drive to Low Fire position, the Run/Test
switch, when placed in the TEST position, will hold the
burner sequence in PURGE with the firing rate motor in the
Low Fire position.
4. In PFEP, the Run/Test switch, when placed in the
TEST position, will stop the timer during the first eight
seconds when a ten second PFEP is selected or during the
first three seconds when a four second PFEP is selected,
allowing pilot-turn-down test and other burner adjustments
65-0120—1
TABLE 5—EXPANDED ANNUNCIATOR.
1
↔
Display Value
(Second Line)
EA Message<
T4
ON or OFF<
T5
ON or OFF<
T6
ON or OFF<
T7
ON or OFF<
T8
ON or OFF<
T9
ON or OFF<
T10
ON or OFF<
T11
ON or OFF<
T12
ON or OFF<
T13
ON or OFF<
T14
ON or OFF<
T15
ON or OFF<
T16
ON or OFF<
T19
ON or OFF<
T17
ON or OFF<
T18
ON or OFF<
T19
ON or OFF<
T20
ON or OFF<
T21
ON or OFF<
T22
ON or OFF<
nnn<
nnnn<
to be made. This activates a 15 second flameout timer that
permits pilot flame adjustment without nuisance safety shut-
downs. The Run/Test Switch will be ignored during PFEP
for the RM7838B if terminals 8 and 9 are jumpered.
5. During Run, the Run/Test Switch, when placed in the
TEST position, will drive the firing rate motor to the Low
Fire position.
NOTE: When the RM7838B is switched to the TEST
mode, it will stop and hold at the next Run/Test switch
point in the operating sequence. Make sure that the Run/
Test Switch is in the RUN position before leaving the
installation.
SELECTABLE SITE-CONFIGURABLE JUMPERS
The RM7838B has three site-configurable jumper op-
tions, see Fig. 28 and Table 6. The site-configurable jumpers
should be clipped with side cutters and the resistors removed
from the Relay Module.
32
First Line
Message
↓EA
↓EA
↓EA
↓EA
↓EA
↓EA
↓EA
↓EA
↓EA
↓EA
↓EA
↓EA
↓EA
↓EA
↓EA
↓EA
↓EA
↓EA
↓EA
↓EA
↓EA
↓EA
↓EA
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