Honeywell 7800 SERIES Instruction Manual page 5

4
RUN/TEST
SWITCH
RESET
PUSHBUTTON
STATUS
LEDS
ES1
ES3
ES2
3K2
16
LOS
2
6K1
3K1
OPTIONAL KEYBOARD
DISPLAY MODULE
DDL
RS485
1
DDL
2
COMMUNICATIONS
3
1
120 VAC, 50/60 Hz POWER SUPPLY, RM7850A; 220-240 VAC,
50/60 Hz POWER SUPPLY, EC7850A. PROVIDE DISCONNECT
MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2 TO CONNECT L1 DIRECTLY TO LOS, AT LEAST ONE CONTROLLED
SHUTDOWN MUST BE PROVIDED EVERY 24 HOURS.
Fig. 2. Internal block diagram of EC/RM7850A (see Fig. 4 for detailed wiring instructions).
EC7830A, RM7830A, EC7850A, RM7850A 7800 SERIES RELAY MODULES
L1
HOT N
1
CONFIGURATION
JUMPERS
MICROCOMPUTER
2K
3K
4K
RELAY
DRIVE 5K
CIRCUIT
6K
7K
8K
9K
SAFETY RELAY
1K
CIRCUIT
POWER SUPPLY
18
19
17
RT
20 6
LD2
1K1
7
HIGH FIRE
8K1
COMMON
8K2
LOW FIRE
5
REMOTE
9K1
RESET 9K2
MODULATE
5
PLUG-IN PURGE
TIMER CARD
TEST
FLAME SIGNAL
JACK
F
PLUG-IN
FLAME
G
AMPLIFIER
22
RELAY
STATUS
FEEDBACK
AND LINE
VOLTAGE
INPUTS
CONTROL
POWER
AL
2K2 5K1
10
4K1
8
7K1
21
2K1
9
5
3
12
INDICATES FEEDBACK SENSING
OF RELAY CONTACT STATUS
13
AND LINE VOLTAGE INPUTS
F G ... 22
USER TERMINALS
15
RELAY CONTACT OPEN
14
RELAY CONTACT CLOSED
RELAY COIL
FIELD WIRING
INTERNAL WIRING
2
SHUTTER
IGN
PV1
PV2
MV
FAN
AL
M15184B
66-1092—06