Resideo L4006E1042 Aquastat Controller 321894-708 this SP12189 assembly provides the

this SP12189 assembly provides the exact static pressure requirements specified by the manufacturer for optimal combustion efficiency and system reliability

steel-frame powerhouse

Enhanced Drainage: Optimized port geometry prevents condensate backup

Drop-In Installation: Standard 230V configuration simplifies field service and reduces downtime during emergency repairs

Avoid touching the element with bare hands

Resideo L4006E1042 Aquastat Controller 321894-708 this SP12189 assembly provides theThe Resideo L4006E1042 Aquastat Controller is a professional grade high limit aquastat engineered for precision temperature regulation in hydronic systems, including boilers and storage tanks. This immersion type device features a manual reset mechanism, ensuring system safety by requiring a physical intervention if temperatures exceed the designated setpoint. Designed with a 130F to 270F operating range, it utilizes SPST contacts that break on