A burner may operate normally at low fire and experience a trip when ramping up to high fire. This usually indicates that the network cannot maintain the required flow at high load.
Static pressure is not enough
The pressure with the burner off may be normal. The essential measurement is taken during the load ramp-up.
Natural gas filter
A clogged filter might not create a problem at low fire but can cause a significant pressure drop at high fire.
Pressure regulator
If the pressure before the regulator remains stable but the pressure after it drops, the supply capacity and the condition of the regulator must be checked.
Piping diameter
Large length, small diameter, or too many fittings may restrict the available flow only when consumption increases significantly.
Simultaneous operation of consumers
If the problem appears when a second boiler or another large consumer starts, the total capacity of the network must be examined.
Best method
Inlet pressure, post-regulator pressure, pre-burner pressure, and load percentage are recorded simultaneously.
