HEATCONTROLLERMARS72230 MARS-72230 Thermocouple 30 in

Product Description

The HEATCONTROLLERMARS72230 MARS-72230 is a 30-inch thermocouple with fitting, designed for use in gas-fired heating appliances where standing pilot flame sensing is required. Thermocouples generate a small millivolt signal from the heat of a pilot flame, holding open a gas valve safety seat. This unit ships with the necessary fitting for connection to a standard gas valve port, making it a direct service replacement for technicians working on residential and light commercial heating equipment.

This thermocouple is suited for gas furnaces, boilers, water heaters, and other standing-pilot gas appliances that rely on millivolt-based flame safety circuits. The 30-inch lead length provides enough reach to route cleanly from the pilot assembly to the gas valve in typical cabinet configurations, reducing the need for extensions or adapters during service calls.

Key Features

• 30-inch lead length accommodates standard pilot-to-valve routing in residential and light commercial equipment
• Includes fitting for direct connection to gas valve thermocouple port
• Millivolt output holds gas valve safety seat open during normal pilot operation
• Service replacement design for standing-pilot gas appliance systems

Compatibility

Designed as a service replacement thermocouple for standing-pilot gas appliances including furnaces, boilers, and water heaters that accept a standard threaded thermocouple fitting at the gas valve.

Installation Notes

Installation should be performed by a licensed gas technician or qualified HVAC-R service professional in accordance with local codes and the appliance manufacturer instructions. Always shut off the gas supply and allow the appliance to cool before removing the existing thermocouple. Hand-tighten the fitting at the gas valve, then snug with a wrench — do not overtighten, as thermocouple fittings are brass and can be damaged. After installation, verify pilot flame engulfs the thermocouple tip fully and that the gas valve holds before returning the appliance to service.

Technical Specifications

• Lead Length: 30 inches
• Fitting: Included

Standard Information

• Brand: HEATCONTROLLERMARS72230
• Manufacturer Part Number: MARS-72230