Mestek 261r06951 Lp Conversion Kit Xf Series

Product Description

The MESTEK 261r06951 is a natural gas to propane conversion kit designed for Sterling XF Series unit heaters rated from 100,000 to 400,000 BTU/h. This kit provides the necessary components to convert a factory-configured natural gas appliance to operate on liquefied petroleum (LP) gas. It is used during installation or when a fuel source changes at a job site. HVAC technicians and gas service professionals are the primary installers. The kit ensures proper fuel metering and combustion performance after conversion without requiring replacement of the entire heating unit.

This conversion kit is intended for use with Sterling XF Series unit heaters across the full capacity range of 100,000 to 400,000 BTU/h. It is suited for commercial and industrial heating applications where LP gas is the available fuel source. Typical install scenarios include warehouses, garages, agricultural buildings, and other large-space heating environments where natural gas supply is not available and LP tanks are used instead.

Key Features

• Converts natural gas operation to LP (propane) on Sterling XF Series heaters
• Compatible across a wide capacity range: 100,000 to 400,000 BTU/h
• OEM-sourced kit with components matched to XF Series combustion system
• Single kit covers multiple input ratings within the XF Series lineup

Compatibility

Designed for use with Sterling XF Series unit heaters rated from 100,000 to 400,000 BTU/h requiring conversion from natural gas to LP (propane) fuel.

Installation Notes

Installation must be performed by a licensed gas technician in accordance with local codes and the appliance manufacturer instructions. Shut off the gas supply and allow the unit to cool completely before beginning any conversion work. After conversion, verify manifold pressure and conduct a leak test on all gas connections before returning the unit to service. Refer to the XF Series service manual for orifice sizing and regulator adjustment procedures specific to LP operation.

Technical Specifications

• Conversion Type: Natural Gas to LP (Propane)
• Compatible Capacity Range: 100,000 to 400,000 BTU/h
• Compatible Series: Sterling XF Series

Standard Information

• Brand: MESTEK
• Manufacturer Part Number: 261r06951