Install Instructions

65-0100—2 34
12
Q7800
13
14
15
16
18
17
19
20
21
22
G
L2
9
8
7
6
5
4
3
10
F
G
L2
9
8
4
7
M2511B
A
6
F1
MAIN VALVE
10
IGNITION
TRANSFORMER
FOR DIRECT SPARK IGNITION 
(OIL OR GAS)
8
9
L2
GENERAL FOOTNOTES, SEE PAGE 5.
A
B
E
1234
5 7815
18
B
D
C
B
5
7800 SERIES CONVERSION WIRING DIAGRAM
FROM________________________________ TO ______________________
(DEVICE TO BE MODERNIZED) (O.S. NUMBER OF RELAY MODULE TO BE USED)
L1&3
R4126A1073, A1164
RM7840E1016 OR RM7800E1010
RM7840L1018 0R RM7800L1012
C
E
D
LOCATE LOW FIRE SWITCH WIRE ON Q535
OR Q536 SUBBASE TERMINAL 15 AND
CONNECT TO Q7800 SUBBASE TERMINAL 5.
IF LOWFIRE SWITCH IS NOT USED, INSTALL
A JUMPER. NOTE: JUMPER WILL ADD 30
SECONDS TO PREPURGE TIMING.

RN7840L/RM7800L–LOCATE Q535 OR Q536
SUBBASE L1 SIDE OF HIGH FIRE SWITCH
AND CONNECT TO Q7800 SUBBASE
TERMINAL 5. IF HIGH FIRE SWITCH IS NOT 
USED, INSTALL A JUMPER. NOTE: JUMPER
WILL ADD 30 SECONDS TO PREPURGE
TIMING.

Q535 OR Q536 SUBBASE HAD U1 AND U2
TERMINALS THAT WERE USED FOR
C7020 AND C7012E,F FLAME DETECTORS.
A. TO MODERNIZE C7020 APPLICATIONS,
CHOOSE A NEW DECTOR AND
REWIRE PER RM7840/RM7800
SPECIFICATIONS.
B. TO MODERNIZE A C7012E,F
APPLICATION, USE THE EXISTING
SENSOR AND REWIRE PER 
RM7840/RM7800 SPECIFICATIONS.
LOCATE THIS JUNCTION 
AND CONNECT IT TO
Q7800 SUBBASE
TERMINAL 6

LOCATE THE START INTERLOCKS AT THIS POINT AND 
CONNECT IT TO Q7800 SUBBASE TERMINAL 20. 
START INTERLOCKS NOW BECOME PREIGNITION 
INTERLOCKS. IF START INTERLOCKS ARE NOT USED,
JUMPER Q7800 TERMINALS 4 TO 20.
LIMITS
CONTROLLER
START
INTERLOCKS
AIRFLOW
SWITCH
L1 3
4
16
12
13
14
11
15