clarkey104
New member
Hi everyone
Please forgive any amateurish terms etc as I am a builder/property developer not an electrician.
We live in a farmhouse and have just converted an attached barn into a holiday let. We have been told by our plumber that the boiler in our house is big enough to run the water and heating to both our house, the converted barn and two more barns which will also be converted to holiday lets over the next year or two.
Now, the plumbing is all in for the new holiday let, but our electricians were unsure how to do their bit to wire in as necessary for the heating and hot water. We have three pipes to the holiday let: a flow, a return, and a cold main. We have a cylinder in the holiday let. Apparently we have a pressurised unvented system to both our house and the holiday let.
Our plumber assumed that he could get the electricians to route a 'live' to the boiler from the new holiday let to let the boiler know when hot water is needed. When all the barns are completed that would give three lives, one from each holiday let plus a live from our house totalling four in all. Our Electricians refused to do this because they said that anyone servicing or repairing the boiler in the future would perhaps not realise that this is the case and thinking they could make the boiler safe by shutting off say the house fuseboard then go on to get a nasty shock!!! They were unable to find a solution. In desperation our plumber installed a flow senser next to our boiler. it failed after a short while then another failed then a third did the same. Another, rated at 3 amps lasted longer, all was well then it too failed. When the flow sensors fail we lose all control over which heating and hot water is on and in fact they all stay on all the time!
I find it difficult to believe that the situation of one boiler serving several dwellings each with a cylinder and thermostat has not been encountered before in this way.
Does anyone have an ideas. Help greatly appreciated!
John
Please forgive any amateurish terms etc as I am a builder/property developer not an electrician.
We live in a farmhouse and have just converted an attached barn into a holiday let. We have been told by our plumber that the boiler in our house is big enough to run the water and heating to both our house, the converted barn and two more barns which will also be converted to holiday lets over the next year or two.
Now, the plumbing is all in for the new holiday let, but our electricians were unsure how to do their bit to wire in as necessary for the heating and hot water. We have three pipes to the holiday let: a flow, a return, and a cold main. We have a cylinder in the holiday let. Apparently we have a pressurised unvented system to both our house and the holiday let.
Our plumber assumed that he could get the electricians to route a 'live' to the boiler from the new holiday let to let the boiler know when hot water is needed. When all the barns are completed that would give three lives, one from each holiday let plus a live from our house totalling four in all. Our Electricians refused to do this because they said that anyone servicing or repairing the boiler in the future would perhaps not realise that this is the case and thinking they could make the boiler safe by shutting off say the house fuseboard then go on to get a nasty shock!!! They were unable to find a solution. In desperation our plumber installed a flow senser next to our boiler. it failed after a short while then another failed then a third did the same. Another, rated at 3 amps lasted longer, all was well then it too failed. When the flow sensors fail we lose all control over which heating and hot water is on and in fact they all stay on all the time!
I find it difficult to believe that the situation of one boiler serving several dwellings each with a cylinder and thermostat has not been encountered before in this way.
Does anyone have an ideas. Help greatly appreciated!
John