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
Params & Display>
BurnerControl>
Times>
TimesStartup2
PressReacTme (S) 2s
0.2-Max
SafetyTGas
Sets the time that the LMV5 will ignore the high and low gas pressure switch inputs after the
main gas valves open. This is done so that pressure shocks do not cause erroneous alarms on
properly adjusted high or low automatic reset gas pressure switches. Does not work with
manual reset switches.
x x x
MaxTmeLowFire (S) 45s 0.2-630s
The allowable time to let the LMV5 achieve low fire shutdown after a call for heat is removed
via internal load controller or INPUT X5-03.1. Setting does not affect fuel valve closing in the
event of a safety shutdown.
AfterburnTme (S) 8s 0.2-63s
Defines the permissible time for a flame to be detected after the main fuel valves are closed
without causing a startblock or alarm. Useful for air postpurged oil nozzles.
PostpurgeT1Gas (S) 30s
PostpurgeT1Oil (S) 30s
PostpurgeT3Gas (S) 5s
PostpurgeT3Oil (S) 5s
PostpurgeT3long (S) 0min 0-65535min
Defines a postpurge time that is in addition to PostpurgeT3Gas(Oil) . If the direct start
option is selected and a call for heat exists, the LMV5 will go directly into prepurge after
PostpurgeT1Gas(Oil) expires.
x
MinTmeHomeRun (O) 1s 0.2-63s The minimum time the LMV5 will wait in phase 10 before proceeding to phase 12.
DelayLackGas (S) 10s
MinTmeHome
Run -63s
If there is a lack of gas pressure (low gas pressure switch open), then the LMV5 will wait this
period of time before attempting to relight, provided that the repetition counter
RepetitCounter for gas is set for more than one (not done in the US). This time period will
double after the first relight attempt. This doubling would occur if RepetitCounter were set
to 3 or greater. Cannot be set for a shorter time than MinTmeHomeRun .
AlarmDelay (S) 10s 0.4-630s
If a condition exists that does not open the safety loop but does prevent the LMV5 from
starting when there is a call for heat, this specifies the period of time that can elapse with
this condition before the alarm is energized. If AlarmStartPrev (alarm in the case of start
prevention) is deactivated, setting this time has no effect.
DelayStartPrev (S) 0.4s 0.4-630s
Period of time before a start prevention is displayed on the AZL. When there is a call for heat,
and a start prevention occurs that does not open the safety loop but does prevent the LMV5
from starting, this specifies the period of time that can elapse before the condition is
displayed on the AZL.
Params & Display>
BurnerControl>
Times>
TimesGeneral
0.2s-63min
0.2s-63min
Params & Display>
BurnerControl>
Times>
TimesShutdown
x xx
x x x
x x x
Defines the mandatory postpurge period. Even if the direct start option is selected and a call
for heat exists, the LMV5 will only go into prepurge after this period times out.
Defines an optional postpurge period. If the direct start option is
selected and a call for heat
exists, the LMV5 will go directly into prepurge after PostpurgeT1Gas(Oil) .
SCC Inc. Page 9 Section 3
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