Burnham Boiler 80160402 Aquastat Refrigerant The stainless steel sensing bulb

The stainless steel sensing bulb (5/16" x 5-13/16") and 54-inch capillary provide the durability and flexibility needed for diverse equipment configurations

Operational Stability: Designed specifically for R22 refrigerant properties to prevent hunting and liquid floodback

Industrial Durability: Over-molded epoxy or thermoplastic enclosure provides superior protection against environmental ingress and thermal stress

Optimized 4-blade design engineered specifically for PA105 and HE-series unit heaters to maintain rated airflow

it manages fan cycling and compressor protection with minimal bounce

Burnham Boiler 80160402 Aquastat Refrigerant The stainless steel sensing bulbThe Burnham Boiler 80160402 Aquastat is an essential high limit immersion control engineered for precise hydronic heating system management. This SPST (Single Pole Single Throw) controller operates on a temperature rise to break the circuit, providing critical over temperature protection for residential and commercial boilers. With a dedicated 180 240F temperature range and a fixed 15 degree Fahrenheit differential, it ensures stable thermal