My bungalow heats up slowly, around 0.5-1 degree per hour. I've added a lot of insulation and it's still slow, so now I'm looking at the CH system itself. Vokera combi boiler doing CH and hot taps only. Normal size copper pipe to a manifold and microbore from there to 10 radiators around the house
All 10 radiators are hot, but I've noticed that when there is a demand for heating the boiler cycles on/off quite frequently rather than staying on as I'd expect. As an examle: Room temperature is 15 deg and I've set the thermostat to 20 deg. The wireless thermostat receiver by the boiler goes orange (visual indicator of heating demand). This will stay orange until 20 deg is achieved some hours later, at which point it will go off as the thermostat is no longer calling for heat. However the boiler will cycle on/off while the room temp slowly increases. I would have thought the boiler would stay on permanently until 20 deg is achieved. Is this normal or is something wrong?
All I can think of is the radiators aren't dissipating enough heat and so the boiler is shutting down as its internal thermostat says its hot enough (on the CH return?). I've opened all lockshields and TRVs - no change. I'm just about to drain, flush, and replace inhibitor (needs doing anyway). Is there anything else I can look regarding the boilder/rads/balancing to help speed up warming the house? House insulation/draught proofing has already been done as much as I can, I just want to know if what I've got now is normal or unusual. Thanks.
All 10 radiators are hot, but I've noticed that when there is a demand for heating the boiler cycles on/off quite frequently rather than staying on as I'd expect. As an examle: Room temperature is 15 deg and I've set the thermostat to 20 deg. The wireless thermostat receiver by the boiler goes orange (visual indicator of heating demand). This will stay orange until 20 deg is achieved some hours later, at which point it will go off as the thermostat is no longer calling for heat. However the boiler will cycle on/off while the room temp slowly increases. I would have thought the boiler would stay on permanently until 20 deg is achieved. Is this normal or is something wrong?
All I can think of is the radiators aren't dissipating enough heat and so the boiler is shutting down as its internal thermostat says its hot enough (on the CH return?). I've opened all lockshields and TRVs - no change. I'm just about to drain, flush, and replace inhibitor (needs doing anyway). Is there anything else I can look regarding the boilder/rads/balancing to help speed up warming the house? House insulation/draught proofing has already been done as much as I can, I just want to know if what I've got now is normal or unusual. Thanks.