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SUNVIC SD2701 Replacement

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TintinandSnowy
TintinandSnowy Member Posts: 1
in Gas Heating

I want to replace my 3 Port Motorised CH / Hot water valve and actuator which is a Sunvic SD2701 / SD2702 and now obsolete. The Honeywell V4073A looks like it could be a suitable replacement but just wondering if the wiring is the same can anyone advise me on this. The Sunvic has 4 wires Orange, Grey, White and Blue and Honeywell has the same 4 colours plus an extra earth ? I cant seem to find any wiring diagrams. Thanks in advance

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