Honeywell RM7895A Installation Instructions Manual page 4

RM7895A,B,C,D/EC7895A,C; RM7896A,B,C,D 7800 SERIES RELAY MODULES
LINE VOLTAGE ALARM
BURNER MOTOR
(BLOWER)
BURNER
CONTROLLER/LIMITS
LOCKOUT INTERLOCK
(INCLUDING
AIRFLOW SWITCH)
INTERMITTENT
PILOT/IGNITION
MAIN FUEL VALVE(S)
IGNITION
FLAME DETECTOR
LED
DISPLAY
BURNER
START
OPERATING
CONTROLS
AND
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.
Fig. 2. Wiring subbase and sequence chart for RM7895A,B/EC7895A; RM7896A,B.
66-1090—4
G
L2
3
4
5
6
7
8
9
10
F
4
3
00
INITIATE STANDBY START
POWER POWER POWER
BURNER/BLOWER MOTOR
LIMITS AND BURNER CONTROLLER CLOSED
AIRFLOW SW CHECK LOCKOUT INTERLOCK CLOSED
6
SAFE START CHECK
Q7800
FOR DIRECT SPARK IGNITION
12
(OIL OR GAS)
IGNITION
13
10
TRANSFORMER
14
8 MAIN VALVE
15
(L1)
16
17
2
18
19
20
21
MASTER
22
SWITCH
00 00
TIMED PFEP
PURGE 4 OR 10 SEC RUN
POWER POWER POWER
PILOT
PILOT PILOT
FLAME
FLAME FLAME
MAIN
MAIN MAIN
ALARM ALARM ALARM
4
IGN
10 5
IGN/ PILOT
MAIN VALVE
6
TO
FLAME
PROVING
4
SEE FLAME DETECTOR SPECIFICATIONS FOR CORRECT WIRING.
5 FOR RM7895A1048 (ONLY), IGNITION TERMINAL 10
IS DE-ENERGIZED WHEN FLAME IS PROVEN.
6 AIRFLOW SWITCH CHECK FEATURE IS FOR THE RM7895B,RM7896B.
RM7896A,B ONLY.
7
4
L2
L1
(HOT)
1
L2
7
POST PURGE
15 SEC STANDBY
POWER
POWER
7
8
9
L1 TO 6
7 AFSC
SSC
M15123A