Vaillant uniSTOR PURE Pre-Plumbed Heat Pump Cylinder 150L–300L Drayton Use a recently calibrated refractometer

Use a recently calibrated refractometer to verify concentration in the mixed fluid before commissioning

Wiring by qualified person per BS 7671

The heating element operates in complete silence

NG and non-NG batteries must remain in completely separate banks

DC connection MC4 connector

Vaillant uniSTOR PURE Pre-Plumbed Heat Pump Cylinder 150L–300L Drayton Use a recently calibrated refractometerThe Vaillant uniSTOR PURE Pre Plumbed Heat Pump Cylinder is a high recovery, stainless steel unvented hot water cylinder engineered to work in harmony with Vaillant air source and ground source heat pumps. Available in 150, 175, 210, 250 and 300 litres, every uniSTOR PURE Pre Plumbed model arrives with factory installed pipework, a tundish, a three way motorised valve and an unvented cylinder kit already fitted dramatically reducing on site labour