SHL509, Furnace Plenum Thermostat replaces P331-2217, HH12ZA252, HH12ZA240

Gas Limit Furnace Thermostat | SHL509 L240-30F | Replaces Bryant P331-2217, HH12ZA252, HH12ZA240, HH12ZB240, B1370903

Protect your furnace from overheating with this brand-new L240-30F gas limit thermostat. Designed to replace Bryant® and other OEM part numbers, this high-limit switch opens at 240°F and resets at 210°F, helping maintain safe operating temperatures in residential and light commercial gas furnaces. Built for durability and precision, it’s a direct-fit solution for restoring thermal safety and system reliability.

⚙️ Features & Benefits:

• ✅ Opens at 240°F and resets at 210°F (30°F differential)
• Designed for use in gas furnaces and HVAC systems
• Durable construction with secure mounting tabs
• Brand New – Unused and ready to install
• Compact design for easy replacement and universal fit

Replaces Part Numbers:

P331-2217, HH12ZA252, HH12ZA240, HH12ZB240, B1370903

✅ Fits Models:

Compatible with select Bryant gas furnace models. Please refer to your unit’s service manual or model tag to confirm compatibility.

️ Installation Tips:

• Disconnect power and shut off gas supply before servicing
• Locate the existing limit thermostat on the furnace heat exchanger or plenum
• Remove mounting screws and disconnect wire terminals
• Install new thermostat in the same orientation and reconnect wires securely
• ✅ Restore power and gas, then test furnace operation and safety cutoff