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RM7800L1087; RM7840G1022,L1075; EC7840L1014 RELAY MODULES WITH VALVE PROVING
120V ALARM
BURNER MOTOR
(BLOWER)
LIMITS
BURNER CONTROL
LOCKOUT INTERLOCKS
(INC. AIR FLOW SWITCH)
10 SEC. INTERRUPTED
PILOT/IGNITION
MAIN FUEL VALVE 1
5 SECOND IGNITION
(EARLY SPARK
TERMINATION)
FLAME DETECTOR
3
INITIATE
(INITIAL
POWERUP
ONLY)
POWER
LED
DISPLAY
BURNER
OPERATING
CONTROLS
AND
INTERLOCK. CHECK
INTERLOCKS
FLAME
SIGNAL
FIRING
RATE
MOTOR
1
MV2 IS MAIN VALVE CLOSEST TO THE BURNER.
Fig. 4. Wiring subbase and sequence for RM7800L/40L, EC7840L with Valve Proving feature enabled.
66-1162—2
Q7800
HIGH FIRE
G
12
COMMON
L2
13
LOW FIRE
14
3
MODULATE
4
15
(L1)
VALVE PROVING
5
16
SWITCH
6
17
2
LOW FIRE
18
7
START SWITCH
HIGH FIRE
8
19
PURGE SWITCH
9
20
PREIGNITION
INTERLOCK
MV2 VALVE
10
21
F
22
RM7800/RM7840L/EC7840L
PREPURGE
HOLD
00
00
TIMED
DRIVE TO
PREPURGE
STANDBY
HIGH FIRE
POWER
POWER
POWER
PILOT
FLAME
MAIN
ALARM
BURNER/BLOWER MOTOR
LIMITS AND BURNER CONTROLLER CLOSED
LOCKOUT INTERLOCKS CLOSED
PREIGNITION INTERLOCK CLOSED
5
TO
19
HIGH FIRE SW.
SAFE START CHECK
SWITCHING
13
12
TO
MOTOR ACTION
SERIES 90
FIRING RATE
SERIES 90
MOTOR
CONTROLLER
B
B
R
R
W
W
1
120V, 50/60 Hz (EC7840L 220-240 VAC) POWER SUPPLY.
PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2
DO NOT WIRE TO ANY UNUSED TERMINALS.
3
SEE FLAME DETECTOR INSTALLATION INSTRUCTIONS
FOR CORRECT WIRING.
4
JR2 INTACT ON RM7800L/40L FOR DSI FUNCTION.
L1
(HOT)
1
L2
MASTER
SWITCH
PREPURGE
PFEP
HOLD
10 SEC.
00
00
10
DRIVE TO
(4 SEC. IF
MFEP
LOW FIRE
JR1 CLIPPED
POWER
POWER
POWER
PILOT
PILOT
PILOT
FLAME
FLAME
FLAME
MAIN
MAIN
MAIN
ALARM
ALARM
ALARM
IGN.
5 SEC.
10
10 SEC. IGN./PILOT 8
MV2 21
MAIN VALVE
4
TO
20
LOW FIRE SW.
5
TO
FLAME PROVING
13
TO
JR2 REMOVED FOR PILOT SEQUENCE.
2
8
FOR DIRECT SPARK IGNITION (OIL
OR GAS)
IGNITION
10
TRANSFORMER
MAIN VALVE 1
9
MAIN VALVE 2
21
17
BURNER
CONTROLLER
M24092
20
25
00
15
RUN
POSTPURGE
STANDBY
POWER
POWER
PILOT
FLAME
MAIN
ALARM
5
2
1
9
TO
6
L1
7
PII
18
13
15
TO
TO
14
13
14
L2
POWER
IC
SSC
M24093
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