Siemens LMV5 Quick Start Manual page 80

Menu Path Parameter
Operation O2Ctrl activate
SetLoad
Manual Operation
Autom/Manual/Off
MinTmeStartRel
Params & Display>
BurnerControl>
Times>
FanRunupTme
Times Startup1
PrepurgeTmeGas or
PrepurgeTmeOil
MinT_PrepurgeGas or
MinT_PrepurgeOil
PrepurgeSafeGas or
PrepurgeSafeOil
LMV5 QSG Rev 4
U = User O = OEM
S = Service
Activates the O2 Ctrl (Control). LMV52 & PLL52 (O2 trim module) required. If control automatically
deactivates, reactivate here. Def = deactivated Typ = activated.
During manual operation, firing rate can be set between the min and max allowed by: Params & Display >
RatioControl > Gas/OilSettings > LoadLimits > Min/MaxLoadGas/Oil
U
1) Automatic - Enable the burner allowing it to respond to setpoints. 2) Burner off - Manually turn the
burner off, setpoints are ignored. 3) Burner on - Manually turn the burner on all setpoints are ignored. For
normal operation this should be placed in automatic. If terminal X5-03.01 is enabled (ON /OFF switch), this
will override the (Burner on) setting. Version B and later.
When the LMV gets a call for heat, (phase 12), this defines the minimum time the LMV will hold (in phase
21) Start releases could be made, but the LMV will still hold for this period of time. Typical start release
devices: outside air damper, low gas press, stack damper limit switch, ect... Start releases with their
associated line voltage INPUT teminals are:
LMV5x terminal X6-01.1 can be used for start realease oil (atomizing media press. switch)
LMV52 terminal X7-03.2 can be used for start release gas as well as other functions.
O
LMV51 terminal X7-03.2 has no function.
LMV52 terminal X9-03.4 is used for the low gas pressue switch only.
LMV51 terminal X9-03.4 can be used for the low gas pressure switch and also Start Release Gas - switches
must be wired in series.
Range = 0.2 - 63 sec, Def / Typ = 1 sec Range 0.2 63 sec, Def / Typ
Also see: Params & Display > Burner Control > Times > Times General MaxTmeStartRel
Time allowed to let the fan get up to speed before the actuators start driving to prepurge. Only used for non-
continuous fan applications. Time depends on inertia of fan wheel. Range = 0.2 to 63 sec, Def /Typ = 2
sec. See Params & Display > Burner Control > Times > Config Genera > Continuous Purge
S
Time begins when the air actuator has reached it's specified purge position.
Setting cannot be set less than MinT_PrepurgeGas (Oil) below.
Set for 5-10 air exchanges of combustion chamber volume.
Range = longer than MinT_PrepurgeGas (Oil) to 63 min. Def = 20 sec Gas, 15 sec oil. Typ = 60 sec.
Sets a minimum allowable time for PrepurgeTmeGas (Oil) above. This parameter should be set by the OEM
for 5-10 air exchanges of combustion chamber volume.
Range = 0.2 to 63min Def = 20 sec Typ = By OEM
O
After a safety related shutdown of the LMV, instead of the normal PrepurgeTmeGas (Oil),
this prepurge time is used for the next LMV start-up.
Range = longer than MinT_PrepurgeGas (Oil) to 63min Def = 20 sec Typ = By OEM
Sec 4 Pg 24
Descriptions / Notes
1 sec
60-62
21
22
30
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