Install Instructions

65-0100—2 38
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
16
7
M7447
A
6
F1
GENERAL FOOTNOTES, SEE PAGE 5.
A
B
D
D
1234
5 7815
18
B
B
C
7800 SERIES CONVERSION WIRING DIAGRAM
FROM________________________________ TO ______________________
(DEVICE TO BE MODERNIZED) (O.S. NUMBER OF RELAY MODULE TO BE USED)
L1&15
R4127A1171, B1039, B1047, B1054
(RAY BURNER)
RM7800G1018 OR RM7840G1014
C
D
IF NO LOW FIRE SWITCH, JUMPER Q7800
SUBBASE TERMINALS 5 TO 18.
NOTE: ADDING THE JUMPER ADDS 30
SECONDS TO THE PURGE TIMING.

Q535 OR Q536 TERMINAL 5 PROVIDED
A 15 SECOND MFEP. Q7800 TERMINAL 
8 PROVIDES A 10 SECOND MFEP.
Q535 OR Q536 TERMINAL 6 PROVIDED 
A 30, 55 OR 60 SECOND MFEP 
(SELECTED BY MODEL NUMBER). 
JUMPER Q7800 SUBBASE TERMINAL 4 
TO TERMINAL 19 AND CLIP JUMPER JR2 
OF THE RM7800G/7840G RELAY MODEL 
TO GET A 30 SECOND MFEP. 55 AND 60 
SECOND MFEP ARE NOT AVAILABLE.
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
15
16
4
12
13
14
11 IF USED
1ST STAGE
FUEL VALVE
2ND STAGE
FUEL VALVE
(OPTIONAL)
10
IGNITION
TRANSFORMER
FOR DIRECT SPARK IGNITION 
(OIL OR GAS)
21
9
L2
5