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- 9 Aug 2017
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Hi all
We moved into a new house last summer and when it came to winter we realised that the Kitchen rad had problems. Its the largest radiator in our system (1.8 mtr vertical double) and takes at least 1.5 hours to get warm, and then its only warm with spots/areas which are colder/warmer etc.
I have tried everything i can think of but nothing has made any difference. I have bled the whole system for air, removed the radiator and flushed for sludge (none - water was very clean) and also removed both the TRV and needle valve, cleaned reassembled, and also tried balancing the whole system - in fact i have also isolated every other radiator in the system and switched the heating on - this did make a slight improvement to the kitchen rad but it still takes over 1.5 hours to get warm and still has cold spots, but never gets really hot.
I have (i think) an S plan system as i have two Honeywell motorised valves in the upstairs airing cupboard. I have checked the heating valve and this looks - as far as i can tell to be ok.
The only thing that i can think of is that there is not enough flow to the kitchen radiator? - although the boiler is also located in the kitchen the cupboard with the hotwater tank and the S- plan valve and plumbing is located upstairs on the far side of the house - so i am assuming that the kitchen rad is actually the last one on the system as its the furthest from the diverter valve?
Also the Grunfoss pump located in the upstairs airing cupboard does not seem to be plumbed into the central heating line, but rather the hot water line? (but it only comes on when the heating is switched on?) - the only thing that i can think of is that this is used to help get hot water to the downstairs kitchen taps quicker? if this is the case shouldn't my system also have a similar pump located in the airing cupboard but plumed into the central heating line?
I have attached a photo for reference below:
What am i missing? any help is appreciated as we cant go another Winter with the kitchen being so cold again
Many thanks
Martyn
We moved into a new house last summer and when it came to winter we realised that the Kitchen rad had problems. Its the largest radiator in our system (1.8 mtr vertical double) and takes at least 1.5 hours to get warm, and then its only warm with spots/areas which are colder/warmer etc.
I have tried everything i can think of but nothing has made any difference. I have bled the whole system for air, removed the radiator and flushed for sludge (none - water was very clean) and also removed both the TRV and needle valve, cleaned reassembled, and also tried balancing the whole system - in fact i have also isolated every other radiator in the system and switched the heating on - this did make a slight improvement to the kitchen rad but it still takes over 1.5 hours to get warm and still has cold spots, but never gets really hot.
I have (i think) an S plan system as i have two Honeywell motorised valves in the upstairs airing cupboard. I have checked the heating valve and this looks - as far as i can tell to be ok.
The only thing that i can think of is that there is not enough flow to the kitchen radiator? - although the boiler is also located in the kitchen the cupboard with the hotwater tank and the S- plan valve and plumbing is located upstairs on the far side of the house - so i am assuming that the kitchen rad is actually the last one on the system as its the furthest from the diverter valve?
Also the Grunfoss pump located in the upstairs airing cupboard does not seem to be plumbed into the central heating line, but rather the hot water line? (but it only comes on when the heating is switched on?) - the only thing that i can think of is that this is used to help get hot water to the downstairs kitchen taps quicker? if this is the case shouldn't my system also have a similar pump located in the airing cupboard but plumed into the central heating line?
I have attached a photo for reference below:
What am i missing? any help is appreciated as we cant go another Winter with the kitchen being so cold again
Many thanks
Martyn