Hi
Our combined gas and electric bills are exhorbitant to say we don't particularly heat all the rooms in the house.
We generally pay upwards of £3000 per year.
Now I know at some point it will make sense to change the boiler but I am not in the position financially to do that at the moment.
I have been trying to understand how the boiler works and what kit I have installed.
So far, it is an old Potterton Netaheat MKIIF 16-22. There is a Grundfos Type UPS 15-60 130 above the boiler with a Danfoss HPA2 motorised valve.
I understand that the Danfoss valve controls HW only from what I have read on some threads here. Please correct me if I am reading wrongly.
The boiler is controlled by a Potterton EP6002 Programmer. I replaced this a few years back as the old EP2002 failed. I assume possibly wrongly that it would be a straight swap. Again, if someone can correct me if I am wrong it would be appreciated.
I know this will sound daft but I have no idea if any of the system is working correctly.
The HW seems to control CH and vice versa! So we have it programmed to HW and CH at the same times throughout the day and every day of the week because my logic is if the boiler never appears to fire when I have just CH switched to on on the programmer then if it fires when HW is switched on, it must be wired incorrectly.
I am going to take the cover off this evening and see what wires come from where.
I cannot find a cylinder stat on the HW cylinder. I have read on the forum wiki that they are generally positioned 1/4 to 1/3 up the cylinder. Unless it is fitted to the rear in an entirely inaccessible location we do not have one.
We have to be careful not to get scalded every day because we have had to turn the heating up to generate more heat. Again, this confirms to me that there cannot be a thermostat as I have looked at a few online and they are generally limited to 65 degrees maximum.
I am looking for general advice on how to improve things. I have read posts on here that say the Danfoss HPA2 MV are rubbish and fail easily. I can hear mine whirring sometimes when the system switches off.
I need to go back to basics and hope to improve the system with some general advice from this forum.
Thanks in anticipation.
Our combined gas and electric bills are exhorbitant to say we don't particularly heat all the rooms in the house.
We generally pay upwards of £3000 per year.
Now I know at some point it will make sense to change the boiler but I am not in the position financially to do that at the moment.
I have been trying to understand how the boiler works and what kit I have installed.
So far, it is an old Potterton Netaheat MKIIF 16-22. There is a Grundfos Type UPS 15-60 130 above the boiler with a Danfoss HPA2 motorised valve.
I understand that the Danfoss valve controls HW only from what I have read on some threads here. Please correct me if I am reading wrongly.
The boiler is controlled by a Potterton EP6002 Programmer. I replaced this a few years back as the old EP2002 failed. I assume possibly wrongly that it would be a straight swap. Again, if someone can correct me if I am wrong it would be appreciated.
I know this will sound daft but I have no idea if any of the system is working correctly.
The HW seems to control CH and vice versa! So we have it programmed to HW and CH at the same times throughout the day and every day of the week because my logic is if the boiler never appears to fire when I have just CH switched to on on the programmer then if it fires when HW is switched on, it must be wired incorrectly.
I am going to take the cover off this evening and see what wires come from where.
I cannot find a cylinder stat on the HW cylinder. I have read on the forum wiki that they are generally positioned 1/4 to 1/3 up the cylinder. Unless it is fitted to the rear in an entirely inaccessible location we do not have one.
We have to be careful not to get scalded every day because we have had to turn the heating up to generate more heat. Again, this confirms to me that there cannot be a thermostat as I have looked at a few online and they are generally limited to 65 degrees maximum.
I am looking for general advice on how to improve things. I have read posts on here that say the Danfoss HPA2 MV are rubbish and fail easily. I can hear mine whirring sometimes when the system switches off.
I need to go back to basics and hope to improve the system with some general advice from this forum.
Thanks in anticipation.
