Honeywell 7800 Series Installation Manual page 10

RM7885A 7800 SERIES RELAY MODULES
DPST ALARM
SILENCING
SWITCH
ALARM
S445A
START-STOP
STATION
STOP
A
B
INTERNAL
JUMPER
D C
START
IGNITION
LOW FIRE MOTOR
END SWITCH
FLAME DETECTOR
1
L1
(HOT)
L2
MASTER
SWITCH
1 120 VAC, 50/60 HZ (RM7885A); 220-240 VAC, 50/60 HZ (EC7785A) POWER SUPPLY.
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2
DO NOT CONNECT ANY WIRES TO UNUSED TERMINALS.
3 SEE FLAME DETECTOR SPECIFICATION FOR CORRECT WIRING.
4 220-240 VAC TO 120 VAC, 10 VA MINIMUM, STEPDOWN TRANSFORMER
(NOT PROVIDED) REQUIRED TO DRIVE SHUTTER (EC7885A ONLY).
32-00215—01
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
Fig. 6. Dual fuel with high-low or modulating burner.
2
GANGED 3 POLE
DOUBLE THROW
SWITCH
R482B
1 2 7
6 8
FUEL
PRESSURE
SWITCH
CONTROLLER
R
W
MANUAL
VALVE
R
W
T
T
HI-LO OR
MODULATING
MOTOR
10
OIL
GAS
PILOT
MOTOR
1 2
6
FUEL
PRESSURE
SWITCH
B
MANUAL
VALVE
B
HI-LO OR
MODULATING
MOTOR
M15106A
R482B
7
8
CONTROLLER
R B
W
R B
W
T
T