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Building Technologies   Basic documentation LMV37.4...  CC1P7546en 
HVAC Products  22 Operation of basic unit via AZL2…  01.12.2009 
22.1.2.3.  List of phase displays 
 
Phase Function 
Ph00 Lockout phase 
Ph01 Safety phase 
Ph10 Home run 
Ph12 Standby (stationary) 
Ph22  Fan ramp up time (fan motor = ON, safety valve = ON) 
Ph24  Traveling to the prepurge position 
Ph30 Prepurge time 
Ph36  Traveling to the ignition position 
Ph38 Preignition time 
Ph39  Valve proving filling time 
(test of pressure switch-min when fitted between fuel valves V1 and V2)
 
Ph40  1st safety time (ignition transformer ON) 
Ph42  1st safety time (ignition transformer OFF) 
Ph44 Interval 1 
Ph50  2nd safety time 
Ph52 Interval 2 
Ph60  Operation 1 (stationary) 
Ph62  Max. time low-fire (operation 2, preparing for shutdown, traveling to low-fire) 
Ph70 Afterburn time 
Ph72  Traveling to the postpurge position 
Ph74  Postpurge time (no extraneous light test) 
Ph78  Postpurge time (t3) (abortion when load controller ON) 
Ph80  Valve proving test evacuation time 
Ph81  Valve proving test time atmospheric pressure, atmospheric test 
Ph82 Valve proving filling test, filling 
Ph83  Valve proving time gas pressure, pressure test 
Ph90  Gas shortage waiting time