Honeywell 7800 Series Manual page 12

RM7800E,G,L,M
INSTALLATION
Fig. 7—Internal block diagram of the RM7800 (See Figs. 8, 9, 10, 11, 12 or 13 for detailed wiring instructions).
4
DDL
COMMUNICATIONS
1
CONFIGURATION
JUMPERS
RUN/TEST
SWITCH
RESET
PUSHBUTTON
SAFETY RELAY
CIRCUIT
STATUS LEDs
20
PRE-IGNITION
INTERLOCK
RUNNING/
LOCKOUT
INTERLOCK
LIMITS CONTROLLER
6
LOW FIRE SWITCH
18
HIGH FIRE SWITCH
19
6K1
3K1
KEYBOARD
DISPLAY MODULE
DDL
RS485
1
2
3
REMOTE
RESET
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
L1
(HOT)
L2
1
120 Vac
PLUG-IN PURGE
TIMER CARD
FLAME SIGNAL
MICROCOMPUTER
TEST
2K
3K
4K
RELAY
5K
DRIVE
CIRCUIT
6K
7K
8K
9K
1K
POWER SUPPLY
1K1
2K1 5K1
7
4K1
7K1
2K2
HIGH FIRE
12
8K1
COMMON
13
8K2
MODULATE
15
9K1
9K2
14
LOW FIRE
12
L2
TEST
JACK
F
PLUG-IN
FLAME G
AMPLIFIER
22
RELAY
STATUS
FEEDBACK
AND LINE
VOLTAGE
INPUTS
CONTROL
POWER
IGNITION
10
8 PILOT
21 PILOT/V2
9 MAIN VALVE
5
BLOWER
3 ALARM
INDICATES FEEDBACK SENSING
TO RELAY STATUS FEEDBACK
AND LINE VOLT INPUTS
FIELD WIRING
INTERNAL WIRING
M1925