Honeywell 7800 Series Installation Instructions Manual page 6

EC7830A, RM7830A, EC7850A, RM7850A 7800 SERIES RELAY MODULES
4
RESET
PUSHBUTTON
STATUS
LEDS
3K2
DDL
DDL
COMMUNICATIONS
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. 3. Internal block diagram of EC/RM7850A (see Fig. 5 for detailed wiring instructions).
32-00198—01
CONFIGURATION
JUMPERS
RUN/TEST
SWITCH
MICROCOMPUTER
SAFETY RELAY
CIRCUIT
ES1
18
ES3
19
ES2
17
16
LOS
20
2
LD2
6K1
3K1
OPTIONAL KEYBOARD
DISPLAY MODULE
8K1
RS485
8K2
5
1
2
REMOTE
RESET 9K2
3
L1
HOT N
1
PLUG-IN PURGE
TIMER CARD
FLAME SIGNAL
PLUG-IN
FLAME
AMPLIFIER
2K
3K
4K
RELAY
DRIVE 5K
CIRCUIT
6K
7K
8K
9K
1K
CONTROL
POWER SUPPLY
POWER
RT
2K2 5K1
6
4K1
1K1
7
7K1
2K1
HIGH FIRE
12
COMMON
13
LOW FIRE
F
15
9K1
MODULATE
14
6
2
TEST
JACK
F
G
SHUTTER
22
RELAY
STATUS
FEEDBACK
AND LINE
VOLTAGE
INPUTS
AL
IGN
10
PV1
8
PV2
21
MV
9
FAN
5
AL
3
INDICATES FEEDBACK SENSING
OF RELAY CONTACT STATUS
AND LINE VOLTAGE INPUTS
G ... 22
USER TERMINALS
RELAY CONTACT OPEN
RELAY CONTACT CLOSED
RELAY COIL
FIELD WIRING
INTERNAL WIRING
M15184B