Honeywell 7800 Series Installation Instructions Manual page 8

EC7820A 7800 SERIES RELAY MODULES
5
RUN/TEST
SWITCH
RESET
PUSHBUTTON
STATUS
LEDS
16
3K2
2
DDL
DDL
COMMUNICATIONS
1 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 EC7820A Relay Module (see Fig. for detailed wiring instructions).
32-00197—01
CONFIGURATION
JUMPERS
MICROCOMPUTER
RELAY
DRIVE
CIRCUIT
SAFETY RELAY
CIRCUIT
ES1
18
ES2
17
LOS RT
20
LD2
7
6K1
3K1
OPTIONAL KEYBOARD
DISPLAY MODULE
9K1
RS485
5
1
2
REMOTE
3 RESET
L1
HOT N
1
220-240 Vac,
50/60 Hz
PLUG-IN PURGE
TIMER CARD
FLAME SIGNAL
PLUG-IN
FLAME
AMPLIFIER
2K
3K
4K
5K
RELAY
6K
STATUS
7K
FEEDBACK
AND LINE
VOLTAGE
9K
INPUTS
1K
CONTROL
POWER SUPPLY
POWER
6
2K1 5K1
10
4K1
1K1
7K1
21
2K2
13
14
F G ... 22
8
2
TEST
JACK
F
G
SHUTTER
22
AL
IGN
PV1
8
PV2
MV
9
FAN
4
AL
3
INDICATES FEEDBACK SENSING
TO RELAY STATUS FEEDBACK
AND LINE VOLTAGE INPUTS
USER TERMINALS
RELAY CONTACT OPEN
RELAY CONTACT CLOSED
RELAY COIL
FIELD WIRING
M8032C
INTERNAL WIRING