Honeywell RM7838B Installation Instructions Manual page 10

RM7838B,C 7800 SERIES RELAY MODULE
L2
L1
(HOT)
MASTER
1
SWITCH
BURNER
CONTROL
RECIRCULATING
AFS
1 120V, 50/60 HZ POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2 SHUTTER CHECK FLAME DETECTION SYSTEM REQUIRED WHEN USING THE PILOT VALVE HOLD FUNCTION.
SEE FLAME DETECTOR INSTALLATION INSTRUCTIONS FOR CORRECT WIRING.
3
15 SECOND FOR RM7838C.
4
ALARM SILENCING SWITCH NOT NEEDED FOR RM7838C APPLICATIONS.
5
Fig. 3. Wiring subbase for RM7838B,C with S445 Start-Stop Station (not the RM7838C1020).
66-1094—08
RECIRCULATING
BLOWER
120V ALARM
COMBUSTION
BLOWER AFS
S445
STOP
A
B
START
D C
3
Q7800 SUBBASE
G
L2
DPST ALARM
SILENCING SWITCH
3
5
4
(L1)
COMBUSTION
5
AIR FAN
LIMITS 6
7
INTERMITTENT/
4
10 SECOND
8
INTERRUPTED
PILOT/IGNITION
9
MAIN FUELVALVE(S)
5 SECOND IGNITION
10
(EARLY SPARK
TERMINATION)
F
FLAME DETECTOR
10
SERIES 90
FIRING RATE SERIES 90
MOTOR CONTROLLER
HIGH FIRE
12 B
COMMON
R
13
LOW FIRE
14
W
MODULATE
15
2
PILOT VALVE
16
HOLD
MANUAL VALVE
17
OPEN SWITCH
LOW FIRE
18
START SWITCH
HIGH PURGE
19
RATE SWITCH
PREIGNITION
20
INTERLOCK
21
22
M15101D
B
R
W