Honeywell 7800 SERIES Instruction Manual page 6

EC7830A, RM7830A, EC7850A, RM7850A 7800 SERIES RELAY MODULES
EC/RM7830A Power Burner ON/OFF, GAS or OIL Sequence
LED
DISPLAY
INITIATE STANDBY
POWER
PILOT
FLAME
MAIN
ALARM
BURNER
OPERATING
PREIGNITION INTERLOCK
CONTROLS
AND
INTERLOCKS
AFS CHK
FLAME
SIGNAL
2 sec AFS CHK
OPTIONS
1 IF ON AT CALL FOR HEAT, HOLD (120 sec). LOCK OUT IF STILL ON.
2 IF OFF AFTER 10 SEC OF FAN, LOCK OUT.
3 TAKE LOCKOUT ACTION, CONTINUE POSTPURGE TIMING.
66-1092—06
Q7800
G
N
AL
3
FAN 4
(L1)
5
RT 6
7
LD2
PV1
8
9
MV
10
IGN
F
2
FLAME
DETECTOR
1 12O VAC, 50/60 Hz POWER SUPPLY (RM7830A). 220-240 VAC, 50/60 Hz POWER SUPPLY
(EC7830A). PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2
SEE FLAME DETECTOR INSTRUCTIONS FOR CORRECT WIRING.
"PREPURGE" PRE
WAITING IGNITION
BURNER/BLOWER MOTOR
IGNITION
17
LIMITS AND BURNER CONTROL CLOSED
LOCKOUT INPUT
1 10 sec 2
AIRFLOW SWITCH CHECK
SAFE START CHECK
4
5
3 sec
Fig. 3. Wiring subbase and sequence chart for EC/RM7830A.
12
13
14
15
16
17 ES2
18
19
20
LOS
21
PV2
22
1
L1
N
PILOT
FIRST SAFETY MAIN TRIAL
STABIL.
TIME TIME
4
10
PILOT VALVE 8
21
V2
FLAME PROVING
6 6
3 or 5 sec 5 sec
3 or 5 sec
SELECT VIA ST7800A PURGE TIMER CARD.
4
5 DUE TO ONE EXTRA SECOND FOR SAFETY RELAY TEST, TIMING CAN VARY FROM 3 TO 4 SECONDS.
6 SELECT VIA CONFIGURATION JUMPERS OR MODEL NUMBERS.
6
LEGEND
ALARM
AL
(NORMALLY OPEN)
PREIGNITION
ES2
INTERLOCK INPUT
BURNER/BLOWER
FAN
MOTOR
IGNITION
IGN
LINE VOLTAGE SUPPLY
L1
LOCKOUT INPUT
LOS
AIRFLOW SWITCH INPUT
LD2
MAIN FUEL VALVE
MV
PILOT VALVE 1
PV1
(INTERRUPTED)
PV2 PILOT VALVE 2
(INTERMITTENT)
RT LIMITS AND BURNER
CONTROL
MAIN
STABIL.
RUN
POSTPURGE
9
MAIN VALVE
6
20
7
SAFE START CHECK
5 sec
STANDBY
3
AFS CHK
6
2, 15 or 30 sec
M15185B