Table of Contents
Advertisement
RM7885A 7800 SERIES RELAY MODULES
S445A
START-STOP
STATION
STOP
A
B
INTERNAL
JUMPER
C
D
START
IGNITION
1
L1
(HOT)
L2
MASTER
SWITCH
1
2
3
4
32-00215—01
DPST ALARM
SILENCING
SWITCH
ALARM
LIMITS
INTERMITTENT
PILOT
LOW FIRE MOTOR
END SWITCH
FLAME DETECTOR
4
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 STEP-DOWN TRANSFORMER
(NOT PROVIDED) REQUIRED TO DRIVE SHUTTER (EC7885A ONLY).
Fig. 4. High-low or modulating burner wiring diagram.
Q7800
G
12
L2
13
(L1)
3
14
2
4
15
5
16
6
17
7
18
8
19
FUEL
PRESSURE
SWITCH
9
20
10
21
F
22
3
8
R482B
1
2
7
6
8
CONTROLLER
R
MANUAL
VALVE
R
HI-LO OR
MODULATING
MOTOR
T
M15103A
B
W
W
B
T
Advertisement
Table of Contents
