Hi,
I moved into a house which already had an ASHP installed (where we live there is no gas or I would have already changed to gas!). The house is a detached 1970’s dormer with 4 bedrooms. It has insulating wall paper and polystyrene blocks in the loft on the roof but I’m not sure it’s suitable for ASHP really in terms of insulation. Our electric bills are pretty huge.
The heat pump is Daikin (this link is the installation manual https://www.daikin.co.uk/content/dam/document-library/declaration-of-conformity/heat/air-to-water-heat-pump-high-temperature/ekhbrd-abv1/EKHBRD-AB(V1-Y1)_EKHBRD-AC(V1-Y1)_4PW60970-1F_Declaration of conformity_English.pdf). When we moved in there was no thermostat anywhere. The water temperature was set to 60 degrees and each radiator had it’s own standard thermostat valve on it. We installed a netatmo thermostat and put smart valves in the rooms we care most about (kids bedrooms). We always have all the thermostats set to 18-21 degrees depending on time of day. We have the hot water come on for an hour a day which is also powered by the heat pump. Our downstairs radiators go off the upstairs ones in a giant single loop (at some point there must have been a leak downstairs and the previous owners didn’t want to pull up the concrete floor to redo the plumbing and so they just put pipes going through the ceilings to upstairs...).
6 months ago I had 3 radiators upstairs replaced with column radiators (only because they look nice) but I thought this would be good for the heat pump as large radiators with lower temperature is recommended(?)
Ever since then a huge radiator in the lounge didn’t work. At some point the radiators in the dining room also stopped working. A month ago we realised the thermostat valves (old style manual ones) in our bedroom weren’t working and the pins were not popping out when pressed in. We had the system drained and new thermostatic valves fitted. Since then heat returned to one radiator in the dining room but the cold has spread to the utility room and our large kitchen extension.
So downstairs we have hardly any heating at the moment and are using an oil filled plug in radiator. Upstairs is ok but the columns never get as hot as the normal radiators - they heat the rooms fine though. We had a few plumbers here and no one knows what is wrong. Most people won’t touch it because they are not certified in heat pumps and the heat pump people blame the radiator plumbing.
we have tried:
* switching off all rads except for the kitchen ones to try to clear an air lock
* bled all radiators in the house
* check all lock shield valves are open
anyone know what could be wrong or have any advice? Could there be dirt in the system? I would have thought sludge would build up more gradually... I’m so tired of being cold!
I moved into a house which already had an ASHP installed (where we live there is no gas or I would have already changed to gas!). The house is a detached 1970’s dormer with 4 bedrooms. It has insulating wall paper and polystyrene blocks in the loft on the roof but I’m not sure it’s suitable for ASHP really in terms of insulation. Our electric bills are pretty huge.
The heat pump is Daikin (this link is the installation manual https://www.daikin.co.uk/content/dam/document-library/declaration-of-conformity/heat/air-to-water-heat-pump-high-temperature/ekhbrd-abv1/EKHBRD-AB(V1-Y1)_EKHBRD-AC(V1-Y1)_4PW60970-1F_Declaration of conformity_English.pdf). When we moved in there was no thermostat anywhere. The water temperature was set to 60 degrees and each radiator had it’s own standard thermostat valve on it. We installed a netatmo thermostat and put smart valves in the rooms we care most about (kids bedrooms). We always have all the thermostats set to 18-21 degrees depending on time of day. We have the hot water come on for an hour a day which is also powered by the heat pump. Our downstairs radiators go off the upstairs ones in a giant single loop (at some point there must have been a leak downstairs and the previous owners didn’t want to pull up the concrete floor to redo the plumbing and so they just put pipes going through the ceilings to upstairs...).
6 months ago I had 3 radiators upstairs replaced with column radiators (only because they look nice) but I thought this would be good for the heat pump as large radiators with lower temperature is recommended(?)
Ever since then a huge radiator in the lounge didn’t work. At some point the radiators in the dining room also stopped working. A month ago we realised the thermostat valves (old style manual ones) in our bedroom weren’t working and the pins were not popping out when pressed in. We had the system drained and new thermostatic valves fitted. Since then heat returned to one radiator in the dining room but the cold has spread to the utility room and our large kitchen extension.
So downstairs we have hardly any heating at the moment and are using an oil filled plug in radiator. Upstairs is ok but the columns never get as hot as the normal radiators - they heat the rooms fine though. We had a few plumbers here and no one knows what is wrong. Most people won’t touch it because they are not certified in heat pumps and the heat pump people blame the radiator plumbing.
we have tried:
* switching off all rads except for the kitchen ones to try to clear an air lock
* bled all radiators in the house
* check all lock shield valves are open
anyone know what could be wrong or have any advice? Could there be dirt in the system? I would have thought sludge would build up more gradually... I’m so tired of being cold!