Hi, I am looking for advise on a zoneing issue on heating system.
I last year migrated to heatmiser uh4 wiring center, I believed I did the wiring correct and lived with it for a year. But this time being cautious about the utility bills I have been monitoring my usage. But I found an which went unnoticed in this one year.
I have 2 zones, one for all the radiators and one for the UFH. These 2 zones are isolated by 2 honewell 2 port motorised valves. I can turn on each zones individually and turn it off individually however the problem is that when both are on and you want to turn one off, it doesn't turn off. So I have to go ahead and turn both of them and then turn on the one that i want to stay on. Manually i could manage, but I am using hive and it is on schedule, so even if the schedule for one is set to be off, the thermostat says off, but the value is still open and water is still moving in that zone.
So I spent one full day re-thinking and tweaking the wiring but no joy. However, I have found what is causing this.
And it is something to do with wiring.
To explain the wiring. The thermostat wiring is no issue, it is the honeywell valve wiring that is an issue.
The boiler has 5 wires, brown n black going into line, green into earth, blue into neutral and then there is the grey that is connected to orange cables of the 2 morotised valves which in return go into the LS of the boiler trigger port on the heatmiser UH4.
The valve cables are place as such. Brown to line, blue neutral, grean earth and then grey to line as well. To reiterated bothe valves work, on and off individually but when both are on you cannot turn off one. I could feel it is because of 2 oranges connected the boiler trigger grey cable. So when the heating is turned on, the grey cable from the valve which connected to live triggers current to orange and then that triggers the boiler, but when the both valves (thermostats) are turned on and one is truned off the circuit doesnt break as the orange cable of the turned off valve carrys the current and pushes it back to the grey hence completing the circuit and keeping it on.
Hence looking for advise as to what can I do fix this and stop this reverse electricity.
Please advise.
I last year migrated to heatmiser uh4 wiring center, I believed I did the wiring correct and lived with it for a year. But this time being cautious about the utility bills I have been monitoring my usage. But I found an which went unnoticed in this one year.
I have 2 zones, one for all the radiators and one for the UFH. These 2 zones are isolated by 2 honewell 2 port motorised valves. I can turn on each zones individually and turn it off individually however the problem is that when both are on and you want to turn one off, it doesn't turn off. So I have to go ahead and turn both of them and then turn on the one that i want to stay on. Manually i could manage, but I am using hive and it is on schedule, so even if the schedule for one is set to be off, the thermostat says off, but the value is still open and water is still moving in that zone.
So I spent one full day re-thinking and tweaking the wiring but no joy. However, I have found what is causing this.
And it is something to do with wiring.
To explain the wiring. The thermostat wiring is no issue, it is the honeywell valve wiring that is an issue.
The boiler has 5 wires, brown n black going into line, green into earth, blue into neutral and then there is the grey that is connected to orange cables of the 2 morotised valves which in return go into the LS of the boiler trigger port on the heatmiser UH4.
The valve cables are place as such. Brown to line, blue neutral, grean earth and then grey to line as well. To reiterated bothe valves work, on and off individually but when both are on you cannot turn off one. I could feel it is because of 2 oranges connected the boiler trigger grey cable. So when the heating is turned on, the grey cable from the valve which connected to live triggers current to orange and then that triggers the boiler, but when the both valves (thermostats) are turned on and one is truned off the circuit doesnt break as the orange cable of the turned off valve carrys the current and pushes it back to the grey hence completing the circuit and keeping it on.
Hence looking for advise as to what can I do fix this and stop this reverse electricity.
Please advise.