I want to replace a 25 year old Sunvic 3 port valve with a new Drayton 3 port. The original wiring centre currently contains a relay and the wiring diagrams are not one for one! Any wrong connection would probably blow the relay. Has anyone come across this problem and is it easily rectified without completely re-wiring the junction box?
Replacing Sunvic 3 port valve with Drayton 3 port valve
- Thread starter prettyvacant
- Start date
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Honeywell all the way, far superior product. Sunvic are well known for failing prematurely, I believe Sunvic were aware of the fault but chose to ignore it.
If it's a 3 port valve then needs to be wired as a Y plan.
If it's a 3 port valve then needs to be wired as a Y plan.
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