Weil-McLain BMC Boiler User Manual


 
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BMC and BMC-6X Installation and Operation Manual
Boiler Mode Settings - The BMC will only modulate boilers their mode is set to Auto or Standby. Check if any boiler stage is set
to Manual, Off, or Standby. See Mode on page 25.
Boilers are Short-Cycling
Lag Delay - Increase the Lag Delay only if all boilers tend to short-cycle.
Last Stage Hold - Increase the Last Stage Hold only if the lead boiler tends to short-cycle.
System is Overshooting or Undershooting
Gain - If the system is overshooting reduce the Gain.
Gain - If the system is undershooting increase the Gain.