Honeywell 7800 Series Installation Manual page 9

DPST ALARM
SILENCING
SWITCH
ALARM
S445A
START-STOP
STATION
STOP
B A
INTERNAL
JUMPER
IGNITION D C
START
INTERMITTENT
PILOT
FLAME DETECTOR
1
MASTER
2
SWITCH
3
4
L2
L1 1
(HOT)
Fig. 5. Cascading two or more burners or supervising two or more pilots when required for safe ignition of one burner.
Q7800
G 12
L2 13
(L1)
3 14
4 15
5
16
6 17
LIMITS
7
18
8 19
9 20
10 21
F
22
4
3
120 VAC, 50/60 HZ (RM7885A); 220-240 VAC, 50/60 HZ (EC7885A) POWER SUPPLY.
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
DO NOT CONNECT ANY WIRES TO UNUSED TERMINALS.
SEE FLAME DETECTOR SPECIFICATION FOR CORRECT WIRING.
220-240 VAC TO 120 VAC, 10 VA MINIMUM, STEPDOWN TRANSFORMER
(NOT PROVIDED) REQUIRED TO DRIVE SHUTTER (EC7885A ONLY).
RM7885A 7800 SERIES RELAY MODULES
2
ALARM
S445A
START-STOP
STATION
STOP
B
INTERNAL
JUMPER
IGNITION
D
START
LIMITS
INTERMITTENT
PILOT
MAIN FUEL
VALVE(S)
FLAME DETECTOR
9
Q7800
G
L2
DPST ALARM
(L1)
3
SILENCING
SWITCH
4
5
6
A
7
C
8
9
10
F
3
M15105A
12
13
14
2
15
16
17
18
19
20
21
22
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