Description
The Hydrotherm 04-1335 is an OEM-specified thermocouple replacement part designed to deliver dependable pilot flame sensing and safety shutoff performance in Hydrotherm heating systems. Thermocouples are a critical safety component — they generate a small millivolt signal when heated by the pilot flame, which holds the gas valve open. If the pilot extinguishes, the thermocouple cools, the signal drops, and the gas valve closes automatically, preventing unburned gas from accumulating.
Key Features
- OEM Hydrotherm replacement thermocouple — part number 04-1335
- Generates millivolt signal to maintain gas valve in open position during normal pilot operation
- Automatic gas shutoff when pilot flame is lost for enhanced safety
- Designed for precise fit and function in compatible Hydrotherm boiler and heating applications
- Durable construction for long service life in demanding hydronic heating environments
Application
The Hydrotherm 04-1335 Thermocouple is intended as a direct OEM replacement for Hydrotherm boilers and heating equipment that utilize a standing pilot ignition system. Always verify compatibility with your specific Hydrotherm model before installation.
Installation Notes
- Disconnect gas supply and allow system to cool before servicing
- Follow all applicable local codes and manufacturer guidelines during installation
- Ensure proper seating of the thermocouple tip in the pilot flame for accurate millivolt output
- Tighten connection nut to manufacturer-specified torque — do not overtighten
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