LMV Series
Technical Instructions
LV3-1000
Gas Oil Gas Oil U/S/O Default Range Description
LEGEND - Password Access: U = User, S = Service, O = OEM, U/S = View - User, Write - Service, S/O = View - Service, Write - OEM
Shaded Parameters = Frequently Used. ** Parameters = Must Set. Fuel 1 parameters for LMV36 only.
Parameter Name
- 276 - 376 Low Oil PS 1 1-2
This setting defines the phase when the low oil pressure switch (input X9-04.2) must be energized:
1 = energized during phase 38 (parameter 217 sets the length of time after the beginning of phase 38 that
the input must be energized)
2 = energized by the beginning of safety time 1 (phase 40)
237 - - -
- - 337 -
- 277 - 377 High Oil PS 1 1-4
This setting defines the function of input X5-02.2 on oil trains:
1 = high oil pressure switch
2 = POC
3 = not used
4 = speed dependent air pressure switch
239 - 339 -
- 279 - 379
240 280 340 380 Repetition Flame O 1 1-2
This sets the numbers of times a flame failure must occur before causing a lockout. Most North American
241 - 341 - Valve Proving S 0 0-3
This setting determines if gas valve proving (leak testing) will be performed. Gas valve proving can be
performed on startup, shutdown, or both. If 0 is selected, valve proving will not be performed.
0 = no valve proving
1 = valve proving on startup
2 = valve proving on shutdown
3 = valve proving on startup and shutdown
242 - 342 - VP Evacuation Time 3 sec 0.2-10 sec
If valve proving is performed, this specifies the length of time that the downstream valve (V2) is energized
(output X7-01.3). This will evacuate any gas that might exist between the gas valves. Sets the length of
phase 80.
Note: The time it takes for the gas valve to be at least half open must be less than the maximum value for
243 - 343 - VP Upstream Test 10 sec 0.2-60 sec
If valve proving is performed, this specifies the length of time that both the upstream and downstream
valves are closed. If the pressure between the valves rises during this period (enough to open the NC valve
proving pressure switch), then the upstream valve is leaking and the LMV3 will lockout. A longer time
period will produce a more sensitive test. Sets the length of phase 81.
1-4
This setting defines the function of input X5-02.2 on gas trains:
1 = high gas pressure switch
2 = POC
3 = valve proving pressure switch
4 = speed dependent air pressure switch
S/O
S
2High Gas PS
Forced Intermittent
When activated, this forces the LMV3 to shut the burner down every 23 hours, 45 minutes of uninterrupted
operation. The burner will automatically restart afterwards. The purpose of the shutdown is to check and
cycle safety devices. Activating this feature is highly recommended if a non-self check flame scanner is
used.
0 = deactivated
1 = activated
0-11
O
SCC Inc. Page 9 Section 3
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