LMV Series
Technical Instructions
LV5-1000
Menu Path Parameter Default Range Description
51.1
52.2
52.4
LEGEND - Password Access: (U)=User, (S)=Service, (O)=OEM, Shaded = Commonly Used, ** = Must Set, X = Has Function, / = Partial Function
LMV
SD_Stage3Off (U) 6% 0-50%
Determines what temp. / press. a staged oil burner will disengage stage 3. Set at a positive %
so that the boiler will turn off stage 3 oil at a set % above the current setpoint. Percentage
based on current setpoint.
x x x
ThreshStage2On (U) 300 0-1000
This value is the integral of a control deviation multiplied by time. This serv
es to not call on
stage 2 unless the pressure / temperature deviates from the desired setpoint for a length of
time and/or by a large margin.
x x x
ThreshStage3On (U) 600 0-1000
This value is the integral of a control deviation multiplied by time. This serves to not call on
stage 3 unless the pressure / temperature deviates from the desired setpoint for a length of
time and/or by a large margin.
x x x
TL_ThreshOff (S) 203 F 32-3632 F
Temperature limiter function. If a temperature sensor is used (connected to INPUT X60), this
parameter controls at what temperature the burner goes into alarm and shuts down due to
an over-temperature situation.
The LMV5 locks out. The LMV5 can only be reset when the temperature goes below
TL_SD_On . Not applicable for steam boilers.
x x x
TL_SD_On (S) -5% -50-0%
Creates a negative deadband for the temperature limiter function. If the temperature
reaches the threshold off value (TL_ThreshOff ), the burner will shut off with an alarm. This
setting controls what temperature under the threshold off value the burner can be restarted.
Not applicable to steam boilers.
x x x
ColdStartOn (S) deact
activated
deactivated
Activates or deactivates cold start thermal shock protection (low fire hold
), based on temp.
or press. for a steam boiler, and temp. for a hot water boiler.
x x x
ThresholdOn (S) 20% 0-100%
This is the temp. / press. below which cold start will engage. Above this temp. /press. the
cold start will not engage. The value is a percentage of the current setpoint.
x x x
StageLoad (S) 15% 0-100%
This sets the % load of the "load step" for a stepping cold start. If the burner is to be held at
low fire (low fire hold) until the ThresholdOff value is reached, set at 0%.
x x x
StageSetp_Mod (S) 5% 1-100%
For modulating burners, this is how much the temp. / press. must increase before the next
load step is triggered. This is a percentage of the current setpoint. Can be set to 100% if a
burner is to be stepped by time only.
x x x
StageSetp_Stage (S) 5% 1-100%
For staged burners, this is how much the temp. / press. must increase before the next burner
stage is released. This is a percentage of the current setpoint. Can be set to 100% if a burner
is to be stepped by time only.
x x x
Params & Display>
LoadController>
TempLimiter
Params & Display>
LoadController>
ColdStart
Params & Display>
LoadController>
ControllerParam
SCC Inc. Page 31 Section 3
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