Multi-Fuel Versatility: Certified for use with multiple fuel types

This specific model is optimized for 24VAC systems commonly found in North American HVAC equipment

the two-way configuration supports proportional control to ensure precise temperature regulation and system efficiency

including those from Furnas

Can this adapter be used in steam applications

Carrier HH18HV135 Limit Switch 321702-401 Multi-Fuel Versatility: Certified for useThe Carrier HH18HV135 Limit Switch is a critical OEM replacement part designed for high limit thermal protection in residential and commercial HVAC systems. This disc style sensor features a normally closed (NC) configuration that triggers an open circuit at 135F to prevent heat exchanger damage or unsafe operating conditions. Once the temperature drops to 110F, the automatic reset capability restores the circuit, ensuring continuous system operation