Avanta suggested schematics

1020AVANTA PLUS Combi Option 17Internal time clock with simple room compensated Heating using the Celcia 15 and constant DHWNOTE:With a 230v switching time clock a frost thermostat, if required, must be connected in parallel with the time clock onterminal strip X2 connectors 1 and 4 (frost stat contacts to close on temperature fall)Room compensator(Celcia15)Mount in a reference room1.5M above floor away fromany heat scourceP3230v SupplyDHWMains cold waterCondensate22mmFlow22mm Gas22mmReturnAVS0015TerminalBlock X6L230v - 3 AmpPower Supply(via switched spur)NETerminalBlock X5123TerminalBlock X91Exist link23Room compensatorCelcia 154Exist link56ACRemoveExist link78TerminalBlock X21234LInternal Time clock - Twin channel230v switching c/w cable and plugNote:Clock has DHW channel disabled for 24hr operation54321CH2 - DHWCH1- HTGNL5Remove ExistPlug from X2NPlug clockinto X221AVW0015NOTE: Terminal blocks are not in line as shown - diagramatic only