The Vaillant negative temperature coefficient sensor is compatible with Ecomax VU (condensing), Ecomax VUW (condensing), Thermocompact VC (fan-assisted), Thermocompact VU (fan-assisted), Turbomax VUW (fan-assisted), VC-VCW (conventional flue), Combicompact VCW (conventional flue), Thermocompact VC (conventional flue), Aquaplus VUI (fan-assisted), Combicompact VCW (fan-assisted), Thermocompact VC-VCW (balanced flue) and VC-VCW (balanced flue) boilers. The sensor decreases the circuit resistance in line as the temperature increases.

Brand Name	Vaillant
Colour	None
Material	None
Manufacturer Model No	252805
Wear Type	None
Type	Sensor
Certifications Met	None
Country of Origin	None
Protects From	None
Waterproof	None
Number of Pockets	None
Compatible With	Aquaplus VUI 362-7, Aquaplus VUI 362-7 R3, Ecomax 613/2 E (2001-2007), Ecomax 618/2 E (2001-2007), Ecomax 622/2 E (2001-2007), Thermocompact 615 E (2001-2002), Thermocompact 620 E (2001-2002) and Thermocompact 628 E (2001-2002)