Gas Supply Pressure Out of Range – Not between 4 and 14 in.w.c. for NG, or 10 and 14 in.w.c. for LPG

What does Gas Supply Pressure Out of Range mean?

The gas supply pressure to the boiler must be within specified minimum and maximum ranges (e.g., 4-14 in.w.c. for Natural Gas). Pressure outside this range can cause unsafe operation, inefficient combustion, or boiler shutdown.

• Problem with the external gas utility supply
• Faulty gas pressure regulator (if installed)
• Obstruction in the gas line
• Incorrect regulator adjustment

Click steps to track your progress.

1. 1

   Do not attempt to inspect or repair gas lines or regulators yourself; this is a safety hazard.

2. 2

   Contact your local gas utility company if you suspect an issue with the main gas supply.

3. 3

   Arrange for a qualified gas technician to inspect the boiler's gas train and pressure regulator settings.

4. 4

   If the gas supply pressure exceeds the maximum, a separate gas pressure regulator must be installed upstream.