Honeywell L8100B1128 Aquastat Controller 328140-751 This 24V AC coil relay

This 24V AC coil relay serves as a critical interface for Aaon rooftop units (RTU) and air handling systems

Common signs include the compressor "hard starting

Designed for precision fuel regulation

This 120V HVAC solenoid utilizes a high-grade electromagnetic coil to manage plunger actuation

Honeywell L8100B1128 Aquastat Controller 328140-751 This 24V AC coil relayThe Honeywell L8100B1128 Aquastat Controller is a high limit immersion controller engineered for precision hydraulic system protection. This SPST aquastat is designed to break the circuit on temperature rise, specifically serving as a secondary safety limit for hydronic heating systems. It features a broad 100 180 degree F operating range with a factory set 190 degree energy cutoff (ECO) to prevent boiler overheating. The unit utilizes a 3 8 inch x 2