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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
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