Pentair Propane to Natural Gas Conversion Kit Model 400 | MasterTemp | 77707-1411

Description

The Pentair Propane to Natural Gas Conversion Kit (77707-1411) is the OEM replacement conversion kit for the MasterTemp 400LP gas heater, converting the burner system from propane (LP) to natural gas (NG) operation.

IMPORTANT: KIT INCLUDES MULTIPLE COMPONENTS
This listing is for a complete conversion kit (Key Nos. 3 and 4 per the Pentair exploded diagram). Verify which components are required for your specific repair before ordering to avoid duplicate purchases.

IMPORTANT: LICENSED PROFESSIONAL INSTALLATION REQUIRED
Gas and electrical heater components must be serviced by a licensed pool professional or qualified HVAC technician. Do not attempt to service gas or high-voltage components without proper certification.

This kit provides the OEM components required to reconfigure the MasterTemp 400LP burner system from propane fuel to natural gas. Converting to natural gas requires replacing specific burner system components — this kit supplies the correct OEM-matched parts (Key Nos. 3 and 4) to complete that conversion. The kit is not included with the heater and must be ordered separately.

Specifications

Fits Into

Compatibility is based on Pentair parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment’s manual or on the original part itself before ordering.

Poolaroo Pro Tip

Before ordering, confirm your heater is currently configured for propane (LP) — this kit converts LP to NG only and cannot be used in reverse. Cross-reference Key Nos. 3 and 4 in your heater’s exploded parts diagram to verify these are the specific components you need. Because natural gas and propane operate at different pressures and orifice sizes, using incorrect burner components is a safety hazard. Always have conversion work performed by a licensed professional and pressure-test the gas circuit after installation.