Pentair Flameholder Kit - Model 250 for MasterTemp 250 | 460746
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- SKU:
- 460746
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About This Item
The Pentair Flameholder Kit (460746) is the OEM replacement flameholder assembly for the MasterTemp 250 gas heater, covering both natural gas (250NA) and liquid propane (250LP) models.
⚠️ IMPORTANT: KIT CONTENTS — MULTIPLE COMPONENTS INCLUDED
This listing is a kit, not a single component. It includes Item Nos. 10, 11, 12, and 13 from the MasterTemp 250 burner assembly diagram, plus the flameholder insert — all components required for a complete flameholder service.
⚠️ 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.
The flameholder assembly positions and stabilizes the burner flame within the MasterTemp 250 combustion chamber. When the flameholder or its insert degrades — through corrosion, heat fatigue, or physical damage — combustion efficiency drops and the heater may fail to maintain a stable flame, triggering lockout conditions. This kit replaces the complete flameholder assembly in a single service, restoring proper flame geometry and burner performance.
Specifications
| Pentair Part Number | 460746 |
| Part Name | Flameholder Kit — Model 250 |
| Kit Contents | Item Nos. 10, 11, 12 & 13 plus Flameholder Insert |
| Quantity Included | 1 Kit (complete assembly) |
Fits Into
| Brand | Equipment Line | Model / Part Number | Notes |
| Pentair | MasterTemp 250 — MasterTemp Series | 250NA | Flameholder Kit for Model 250 — Natural Gas |
| Pentair | MasterTemp 250 — MasterTemp Series | 250LP | Flameholder Kit for Model 250 — Liquid Propane |
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.
Pro Tip
Before ordering, cross-reference part number 460746 against the exploded diagram in your MasterTemp 250 installation manual to confirm the flameholder assembly matches your heater's production revision. If your heater has experienced repeated ignition failures or nuisance lockouts, inspect the flameholder insert specifically — this is typically the first component to show heat fatigue. Because this kit includes all four numbered items plus the insert, it is the preferred service approach over replacing individual components. All flameholder service must be performed by a licensed pool professional or qualified HVAC technician — do not attempt gas burner component replacement without proper certification.
