Internal Block Diagram - Honeywell RM7800E Installation Instructions Manual

RM7800E,G,L,M; RM7840E,G,L,M 7800 SERIES RELAY MODULES
4
RUN/TEST
SWITCH
RESET
PUSHBUTTON
STATUS LEDs
PRE-IGNITION
INTERLOCK
LIMITS CONTROLLER
DDL
DDL
COMMUNICATIONS
1 PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
Fig. 1. Internal block diagram of the RM7800L/RM7840L (See Fig. 2, 3, 4 or 5
66-1085—04
CONFIGURATION
JUMPERS
MICROCOMPUTER
RELAY
DRIVE
CIRCUIT
SAFETY RELAY
CIRCUIT
20
RUNNING/
LOCKOUT
INTERLOCK
6
LOW FIRE SWITCH
18
HIGH FIRE SWITCH
19
6K1
3K1
KEYBOARD
8K1
DISPLAY MODULE
RS485
8K2
1
2
9K2
REMOTE
3
RESET
for individual detailed wiring instructions).
L1
(HOT) L2
1
120 Vac,
50/60 Hz
PLUG-IN PURGE
TIMER CARD
FLAME SIGNAL
PLUG-IN
FLAME
AMPLIFIER
TEST
2K
3K
4K
5K
RELAY
6K
STATUS
7K
FEEDBACK
AND LINE
8K
VOLTAGE
9K
INPUTS
1K
CONTROL
POWER SUPPLY
POWER
1K1 2K1 5K1
7
4K1
7K1
2K2
HIGH FIRE
12
COMMON
13
MODULATE
15
9K1
LOW FIRE
14
4
TEST
JACK
F
G
22
10 IGNITION
8
PILOT
21
PILOT/V2
MAIN VALVE
9
5 BLOWER
3 ALARM
INDICATES FEEDBACK SENSING
OF RELAY CONTACT STATUS
AND LINE VOLT INPUTS
FIELD WIRING
INTERNAL WIRING
M12258
L2