10002264 Natural Gas 3-Way Pilot Assembly Kit for HHT Majestic Monessen Temco Vermont Castings Fireplaces - SRV10002264 LP NG 3-Way Pilot with Thermocouple

10002264 / SRV10002264 Natural Gas 3-Way Pilot Assembly Kit

Key Features

• Comprehensive 3-Way Pilot System: A complete ignition solution featuring the pilot burner hood, a high-output thermopile, a precision thermocouple, and a ceramic electrode, ensuring reliable ignition and flame sensing.
• Dual-Sensor Safety Technology: Utilizes both a thermocouple (to verify the pilot flame) and a thermopile (to generate the millivolts required to open the main gas valve), providing redundant safety and electrical independent operation.
• High-Temperature Stainless Steel Hood: The 3-way pilot hood is manufactured from corrosion-resistant stainless steel, designed to direct the flame precisely toward the sensors and the main burner for a smooth "cross-over" ignition.
• Precision NG Orifice: Pre-installed with a Natural Gas (NG) orifice calibrated for optimal fuel-to-air mixing, resulting in a stable, blue pilot flame that resists drafting and lifting.
• Heavy-Duty Lead Wires: Features 24-inch heat-shielded lead wires for both the thermocouple and thermopile, allowing for flexible routing away from the high-heat zones of the firebox.

Replaces / Cross-Reference Part Numbers

• SRV10002264
• 230-1781
• 10002265
• 2103-010
• 2103-011
• 4021-736
• 485-510A
• 10001741

Compatibility & Fitment

This 3-way pilot assembly is the primary ignition component for millivolt (standing pilot) fireplaces manufactured by Hearth & Home Technologies (HHT). Key compatible brands include:

• Majestic: Fits various models in the DVR, DVRT, DVS, and DVT series (e.g., DVR33, DVT36, DVRT42).
• Vermont Castings: Compatible with many Direct Vent and B-Vent units including the Radiance and Stardance series.
• Monessen: Fits standard millivolt series such as the BDV, CDV, and MDV units.
• Temco: Direct replacement for several ADVP and DV series fireplaces utilizing the SIT-style pilot bracket.
• Note: This kit is configured for Natural Gas. To use with Propane (LP), you must swap the internal pilot orifice (typically a #35 or #51 depending on the model).

When to Replace

• Pilot Will Not Stay Lit: After releasing the knob, the pilot flame goes out instantly. This indicates a failed Thermocouple that can no longer hold the safety magnet open.
• Main Burner Won't Ignite: The pilot is lit, but the main logs never turn on. This suggests the Thermopile is not generating the required 325–750 millivolts to trigger the gas valve.
• Sooting or Yellow Flame: The pilot hood or orifice is clogged with carbon or spider webs, causing an "unclean" flame that prevents the sensors from heating properly.
• No Spark During Lighting: The ceramic insulator on the electrode is cracked or the wire is frayed, preventing the piezo igniter from creating a spark to light the pilot.
• Delayed Ignition: The pilot flame is weak or misdirected, causing gas to build up before the main burner finally "poofs" or bangs during ignition.

Installation Tips

• Safety First: You MUST shut off the gas supply and ensure the fireplace has completely cooled. Gas fireplace interiors can retain dangerous levels of heat long after use.
• The "Millivolt" Test: Before replacing the whole assembly, use a multimeter to check the thermopile. If it reads above 325mV while the pilot is hitting it, your problem might be the gas valve or the wall switch, not the pilot kit.
• Avoid Kinking: The thermocouple and pilot tube are made of soft copper/aluminum. Be extremely careful not to "kink" the lines during routing, as this can restrict gas flow or break the internal sensor wire.
• Finger-Tight Plus: Thread the thermocouple nut into the back of the gas valve by hand until snug, then give it only a **1/4 turn** with a wrench. Overtightening can crush the sensitive internal copper connection.
• Clean the Orifice: If you are re-using your old pilot tube, ensure the orifice is clear of debris. Never use a drill bit to clean an orifice; use compressed air or a fine needle to avoid enlarging the hole.