Sequence Chart - Siemens LFL Series Technical Instructions

Program Sequence
INPUT Required
PREPURGE
START
P
OPEN
ECONOMY (FULLY CLOSED)
P
10/12
Siemens Building Technologies
PROGRAM SEQUENCE CHART
INPUT Allowed INPUT NOT Allowed
1
CLOSE (MINIMUM)
PTFI
1
Output ON (Powered)
2
...
...
...
...
...
...
...
...
...
...
...
...
...
Modulation
MTFI
IDLE
2
...
...
...
...
...
...
Output OFF
1
POWER (HOT)
2
POWER (NEUTRAL)
3
ALARM
15
NOT USED
21
RESET
POSTPURGE
4
LOCKOUT LIMITS
5
RECYCLE LIMITS
12
POC (PROOF OF CLOSURE)
14
COMBUSTION AIR PROVE
13
COMBUSTION AIR SW TEST
7 COMBUSTION AIR BLOWER
COMBUSTION AIR BLOWER
6
8
ACTUATOR FEEDBACK
9
OPEN
10
CLOSE (MINIMUM)
11
ECONOMY (FULLY CLOSED)
20
RELEASE TO MOD
ACTUATOR
POSTPURGE
16
IGNITION
17
PILOT
18
MAIN (DIRECT IGNITION)
19
MAIN (PILOTED)
22
23
FLAME SIGNAL
24
HVAC Products
11.15.2004
N/A