Resideo wt8860b1000 Gas Valve Control Natural Gas Uln

Product Description

The RESIDEO wt8860b1000 is a natural gas valve control designed for residential water heaters with 2-inch insulation tank configurations and a 5-inch water column (WC) inlet pressure setting. Built to an ultra-low NOx (ULN) standard, this control manages gas flow, ignition, and temperature regulation in a single integrated unit. A status LED is built in to help technicians diagnose faults faster, trimming troubleshooting time by up to 30 minutes. The resettable emergency temperature cutoff eliminates the need for full valve replacement after a high-limit event, reducing both parts cost and labor time on the call.

This gas valve control is suited for residential natural gas water heater installations requiring ULN-compliant components. It is appropriate for tank-style water heaters with 2-inch insulation walls. The unit is typically installed during new water heater commissioning or as a service replacement when the existing gas valve control fails, locks out, or causes erratic temperature performance. Licensed plumbers and HVAC technicians are the primary installers for this type of control.

Key Features

• Status LED reduces diagnostic and repair time by up to 30 minutes per service call
• Resettable emergency temperature cutoff eliminates valve replacement after high-limit events
• Larger pilot flame design reduces nuisance callbacks from pilot outages
• Accurate temperature sensing minimizes hot and cold water fluctuations at the tap
• Anti-scalding algorithms protect occupants from water temperatures exceeding the setpoint
• ULN-compliant for jurisdictions requiring ultra-low NOx water heating equipment

Compatibility

Designed as an OEM-style replacement gas valve control for residential natural gas tank water heaters with 2-inch insulation walls and a 5-inch WC inlet pressure setting requiring ULN-compliant controls.

Installation Notes

Installation should be performed by a licensed plumber or qualified HVAC technician in accordance with local codes and the appliance manufacturer's instructions. Shut off the gas supply at the upstream shutoff valve and allow all components to cool before beginning work. Verify inlet gas pressure matches the 5-inch WC setting of this control before commissioning. After installation, check for gas leaks at all fittings using an approved leak-detection solution before restoring power or relighting the pilot.