149/245
Building Technologies Division
Basic Documentation LME7...
CC1P7105en
Infrastructure & Cities Sector
19 PME73.840...
29.11.2011
Phase
number
Function
LOC
Lockout shutdown phase
OFF
Standby, waiting for heat request
oP1/oP:P1
Part 1: Request load controller OPEN
Part 2: Modulation of actuator toward high-fire
Part 3: High-fire reached
Part 4: Request load controller CLOSE
Part 5: Modulation of actuator toward low-fire
Part 6: Low-fire reached
10
Shutdown, actuator travels to the CLOSED position (home run)
21
Safety valve ON, air pressure switch in no-load position
Check if POC is closed, actuator travels to the CLOSED position
22
Part 1: Fan motor ON
Part 2: Specified time air pressure switch
Message (timeout), stabelization of air pressure switch
24
Opening time of actuator (timeout)
30
Part 1: Prepurge time without flame simulation test
Valve proving when…
parameter 241.00 = 1 after power ON, lockout, or
parameter 234 (postpurge time) = 0 second or
parameter 241.01 = 1
Part 2: Prepurge time with flame simulation test (2.1 seconds)
36
Closing time of actuator (timeout)
38
Preignition time
40
Postignition time, parameter 257 + 0.3 seconds
42
Flame detection
44
Interval: End of ignition safety time and load controller
release
44
Interval: End of ignition safety time and fuel valve 2 ON
50
Part 1: Interval: Fuel valve 1 ON and pilot valve OFF
Part 2: Response time
72
Opening time of actuator (timeout)
74
Part 1: Operation is ended, check if postpurging is programmed
Part 2: Postpurge time
Valve proving when…
parameter 241.00 = 1 and
parameter 234 (postpurge time) >0 seconds and
parameter 241.01 = 1
80
Test space is evacuated
81
Atmospheric pressure test
81
Proving time fuel valve 1
82
Test space is filled
83
Proving time fuel valve 2
*)
During the actuator’s running phases, the actuator’s feedback signal
must first be OFF, then ON
Key to phases