I normally tell people not to latch motorised zone valves because
a. They might cease in that position.
b. Latching them, does not actually open them completely.
But something I hadn't realised at all.
c. Latching them open does not operate the microswitch inside them. Probably because of b. And depending on what your microswitch is connected to, you might want that switch to be ON when the zone valve is open.
Hope this helps.
As I was getting ready for the heating season I realised that my HW zone valve has failed at some point and we had not noticed I have solar panels and it has kept the HW cylinder topped up, so the fault has gone unnoticed for a while.
Just needed a new motor head. I also noticed that you can actually buy just the motor as a spare too. But I wasn't keen on buying from somewhere that I couldn't guarantee was a genuine Honeywell part. And in the big stores the cost between the motor and the entire motor head was pennies. So it turned out to be a no brainer. Probably a bit more wiring at the junction box rather than just replacing the motor inside the head. But it would have taken me just as long to rewire and install the motor on its own too.
a. They might cease in that position.
b. Latching them, does not actually open them completely.
But something I hadn't realised at all.
c. Latching them open does not operate the microswitch inside them. Probably because of b. And depending on what your microswitch is connected to, you might want that switch to be ON when the zone valve is open.
Hope this helps.
As I was getting ready for the heating season I realised that my HW zone valve has failed at some point and we had not noticed I have solar panels and it has kept the HW cylinder topped up, so the fault has gone unnoticed for a while.
Just needed a new motor head. I also noticed that you can actually buy just the motor as a spare too. But I wasn't keen on buying from somewhere that I couldn't guarantee was a genuine Honeywell part. And in the big stores the cost between the motor and the entire motor head was pennies. So it turned out to be a no brainer. Probably a bit more wiring at the junction box rather than just replacing the motor inside the head. But it would have taken me just as long to rewire and install the motor on its own too.
Comment