VAILLANT TW-ADG (8L) Installation Kit for VSC/VCC/VSCS 4-5, uniTOWER 8-liter potable water expansion tank (flow-through), 3/4" connection fittings, flexible 3/4" G connection lines, EPS padding Can be used for: ecoCOMPACT VSC, VCC, auroCOMPACT VSC S and uniTOWER Note: Only auroCOMPACT VSC S 4-5: When installing the installation kit for an unregulated heating circuit (Order no: 0020170507) or the extension kit for a regulated heating circuit (Order no. 0020170508), the potable water expansion tank installation kit cannot be used. Order no. 0020180979
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