Flame Safeguard (MM80001/FSG) Manual
BC: Gas Pressure Switch – Offset Lower Limit
This is an offset lower limit from the commissioned gas pressure, see
parameter 41 for the gas pressure display units. See option/ parameter
125, 126, 127 and 128 to enable the pressure limits. When used in FSG
mode, Option 136 is used while firing, instead of the commissioned gas
pressure. It has to maintain a pressure of at least the Option 136 value.
0 mbar – 1340 mbar (value 25 = 2.5 mbar)
0” WG – 537.777” WG (value 25 = (1.003 ”WG)
0 PSI – 19.435 PSI (value 25 = 0.036 PSI)
BC: Gas Pressure Switch – Offset Upper Limit
This is an offset upper limit from the commissioned gas pressure, see
parameter 41 for the gas pressure display units. See option/ parameter 125,
126, 127 and 128 to enable the pressure limits.
0 mbar – 1340 mbar (value 25 = 2.5 mbar)
0” WG – 537.777” WG (value 25 = (1.003 ”WG)
0 PSI – 19.435 PSI (value 25 = 0.036 PSI)
BC: Gas Static Line Pressure Lower Limit Offset
For setting 0, if the measure static line pressure during the VPS void to
gas phase is below the gas pressure offset lower limit set in option/
parameter 136, a lockout will occur.
If both options 136 and 138 are set to 0, then a lockout will occur if the
measured static line pressure during VPS void to gas phase is below the
absolute value in option 133.
For setting other than 0, this measured static line pressure is checked
against the value set in this option. When used in FSG mode, Option 138
controls the gas pressure required during valve proving.
Option/ parameter 136 offset lower limit used
0.1 mbar – 5000 mbar (value 25 = 2.5 mbar) 0.040”WG – 2006.630”WG
(value 25 = 1.003”WG)
0.001 PSI – 72.519 PSI (value 25 = 0.036 PSI)
BC: Oil Pressure Switch – Offset Lower Limit
The MM will check the oil pressure is not below this offset lower limit from
the commissioned oil pressure, during firing.
0.001 Bar – 4.000 Bar (0.015 PSI – 58.015 PSI)
BC: Oil Pressure Switch – Offset Upper Limit
The MM will check the oil pressure is not below this offset lower limit from
the commissioned oil pressure, during firing.
0.001 Bar – 4.000 Bar (0.015 PSI – 58.015 PSI)
BC: Air-Proving Pressure Threshold for Purge
This is the minimum air pressure that must be detected by the MM during
purge, when using an Autoflame air pressure sensor. If this is set to 0,
then MM will look for the minimum air pressure set in option/ parameter
149. See parameter 43 for air pressure display units.
0 mbar – 120.0 mbar (0” WG – 48.176” WG)
BC: UV Shutter Test Interval
This is the time interval between shutter tests on the self-check UV scanner.
See options/ parameter 110 and 122.
Seconds