including models 8221G001 and 8221G003

Key Benefits Dual functionality: Combines reliable boiler water feeding with a safety cut-off to protect against low water conditions

Designed for use with R22 refrigerant

it is standard practice to use a 7

this plug provides the exact pinout configuration required for immediate plug-and-play restoration of furnace functionality

Viessmann 7837053 Sensor 320788-702 including models 8221G001 and 8221G003The Viessmann 7837053 Sensor #1 is a critical outdoor NTC temperature sensor engineered for high precision weather compensation in Vitodens and Vitocrossal series boilers. As a genuine OEM temperature sensor, it utilizes a Negative Temperature Coefficient (NTC) thermistor to provide real time ambient data to the control logic, allowing the system to modulate the burner and supply temperature based on outdoor conditions. This HVAC temperature control