Verify your specific steam pressure and temperature ratings against the Series 31H submittal data before installation

This specific configuration is a 2-wire 4 to 20 mA loop-powered device

Using high-quality HVAC replacement seals like this ensures that the unit maintains its factory-specified static pressure

This heavy-duty OEM replacement base provides the essential "C" terminal required to power modern Wi-Fi enabled thermostats without the need for additional external transformers

This boiler temperature sensor is compatible with a wide range of high-efficiency equipment

Friedrich Air Conditioning 62601010 Control Board 340155-7026 Verify your specific steam pressureAs a technician, you know that a failing logic board can compromise the entire cooling cycle. The Friedrich 62601010 Control Board is a genuine Friedrich OEM replacement part engineered specifically for the SM18N30 BUN and other compatible air conditioning units. This electronic control kit manages critical system functions, ensuring precise communication between the thermostat inputs and the compressor relays. By installing a Friedrich AC control