Honeywell EC7895A Installation Instructions Manual page 5

LINE VOLTAGE
ALARM
BURNER MOTOR
(BLOWER)
BURNER
CONTROLLER/LIMITS
LOCKOUT INTERLOCK
(INCLUDING
AIRFLOW SWITCH).
10 SEC. INTERRUPTED
PILOT/IGNITION
MAIN FUEL VALVE(S)
IGNITION
FLAME DETECTOR
4
LED
INITIATE STANDBY
DISPLAY
POWER POWER
BURNER
START
OPERATING
CONTROLS
AND
AIRFLOW SW. CHECK
5
INTERLOCKS
FLAME
SIGNAL
1
RM7895, RM7896: 120 VAC , 50/60 HZ; EC7895: 220-240 VAC, 50/60 HZ
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2
DO NOT CONNECT ANY WIRES TO UNUSED TERMINALS.
3
FOR EC7895, A 220 TO 240 VAC TO 120 VAC, 10 VA MINIMUM STEPDOWN
TRANSFORMER (NOT PROVIDED) MUST BE USED TO DRIVE THE SHUTTER.
4 SEE FLAME DETECTOR SPECIFICATIONS FOR CORRECT WIRING.
Fig. 3. Wiring subbase and sequence chart for RM7895C,D/EC7895C; RM7896C,D.
RM7895A,B,C,D/EC7895A,C; RM7896A,B,C,D 7800 SERIES RELAY MODULES
Q7800
12
G
L2 13
3 14
4 15
(L1)
5
16
6 17
7
18
8
19
9 20
21
10
F 22
3
00 00 00
TIMED PFEP
START
PURGE 4 OR 10 SEC
POWER POWER
PILOT
FLAME
MAIN
ALARM
BURNER/BLOWER MOTOR
IGN.
10 SEC. IGN./ PILOT
LIMITS AND BURNER CONTROLLER CLOSED
LOCKOUT INTERLOCK CLOSED
SAFE START CHECK
5
FOR DIRECT SPARK IGNITION
(OIL OR GAS)
IGNITION
10
TRANSFORMER
8
9 MAIN VALVE
2
DELAYED
(2ND STAGE)
MAIN VALVE
MASTER
SWITCH
L1
(HOT)
1
L2
7
RUN
MFEP
POWER POWER POWER
PILOT PILOT PILOT
FLAME FLAME FLAME
MAIN MAIN MAIN
ALARM ALARM ALARM
4
10
8
8
MAIN VALVE
2ND STAGE MAIN 21
L1 TO 6
6
TO 7
FLAME PROVING
5
AIRFLOW SWITCH CHECK FEATURE IS FOR THE RM7895D, RM7896D.
6 RM7896C,D ONLY.
7
RM7895C1020, RM7896C1036 PFEP 10 SECONDS ONLY;
RM7895C1053 PFEP 4 SECONDS ONLY, 3 SECONDS ONLY SOFTWARE
REVISION 4151.
8 RM7895C1020, RM7896C1036: DURING FIRST 8 SECONDS OF PFEP,
WHEN A FLAME SIGNAL IS DETECTED, TERMINAL 10 IS DE-ENERGIZED.
IF FLAME SIGNAL IS LOST, TERMINAL 10 WILL RE-ENERGIZE.
L2
6
POST PURGE
15SEC STANDBY
POWER POWER
6
9
AFSC
SSC
M23998
66-1090—06