Boiler cabinet vibrates excessively during operation

Safety: Turn off power before tightening any components.

• Tighten fasteners: Check all accessible screws and brackets securing the boiler to the wall or floor and tighten as needed.
• Inspect fan and pump mounts: Ensure the combustion fan and circulator pump are firmly mounted and not contacting the cabinet.
• Support vent piping: Add or adjust hangers to prevent vent pipes from transmitting vibration to the structure.
• Check for cavitation: A noisy, rattling pump may be cavitating due to low inlet pressure; verify system pressure and bleed air.