Product description

The vacuum switch is a critical safety component designed to monitor the pressure conditions within your Harman pellet stove. Also known as a pressure switch, this device ensures that the stove’s internal environment is safe for combustion before allowing the fuel feed system to operate. It works by sensing the 'vacuum' or negative pressure created by the combustion blower. If the blower fails, the vent becomes blocked, or the firebox door is left open, the vacuum will drop, and the switch will immediately cut power to the auger motor to prevent a dangerous buildup of fuel or smoke. This vital interlock protects your home from potential hazards and ensures that the stove only operates under optimal mechanical conditions. Constructed with a sensitive diaphragm and precision electrical contacts, the vacuum switch is designed for high reliability over many years of service. If your stove's feed motor is failing to start even when the hopper is full, a faulty or disconnected vacuum switch is a likely culprit that requires immediate attention.

Product highlights

• Safety Interlock: Crucial safety device that prevents fuel delivery if unsafe pressure conditions are detected.
• Blower Monitoring: Ensures the combustion blower is operating correctly before allowing the fire to start or continue.
• Pressure Sensing: Uses a precision diaphragm to detect subtle changes in firebox and exhaust vacuum levels.
• Fail-Safe Protection: Designed to automatically shut down the fuel feed system in the event of a venting blockage or blower failure.
• Critical Component: An essential part for maintaining the safe and certified operation of your Harman pellet stove.

Specs

• Manufacturer: Harman
• Manufacturer Part Number: 320-6866
• Type: Vacuum Switch / Pressure Switch

Direct replacement models

Fits various Harman pellet stove models requiring a vacuum safety switch for operational clearance.

You will receive the same product or an OEM-Equivalent that meets the highest standard of the OEM with warranty that will be a direct-fit. Manufactured with rigorous industry standards and certified in the USA with superior quality to the OEM.