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the 79J74 burner is designed to produce a stable
or if you hear grinding "metal-on-metal" sounds
This part is specifically rated for high-temperature and high-pressure service up to 600 psig and 800°F
When you are opening up a Viessmann Vitodens 200 WB2A or Vitocrossal CU3A for annual service or a burner teardown
Trane CNT1320 Temp Control 320720-756 the 79J74 burner is designedThe Trane CNT1320 is an essential OEM temperature control designed for precise thermal management within residential and light commercial HVAC systems. This SPST temp control (Single Pole Single Throw) is engineered to maintain system safety by monitoring internal temperatures with high reliability. It features a technical setpoint configuration of 140Op 95Cl, meaning the switch is designed to open the circuit at 140F to prevent overheating and