Vaillant Solar Discharge Vessel 0020145563 instant hot water tap and part numbers differ between

and part numbers differ between them

Model: ADAX Neo NP EPH (NP12KDT

giving full local control of temperature

180–300L

Vaillant Solar Discharge Vessel 0020145563 instant hot water tap and part numbers differ betweenThe Vaillant Solar Discharge Vessel (article number 0020145563) is a compact, wall mounted glycol collection vessel designed for use with Vaillant aroTHERM heat pump systems. Its purpose is straightforward but essential: when a heat pump system's Pressure Relief Valve (PRV) opens, glycol based antifreeze is discharged from the sealed heating circuit. Without a dedicated collection vessel, this glycol would enter the drainage system which is