can someone clarify for me pls.
I have a vailant plus 630 R1. Approx 18 years. Clean as a whistle as recently had power flush inc chems so know all is clean and well.
Despite setting the rad temp to say 75*, it rarely if ever runs to that temp. it’s generally max at 60* and as low as 50*.
I’ve read countless articles and spoken to several engineers and need clarification to the following pls:
1) if rad temp (not room stat) is set to 75*, and the room is nearing its target temp, does the boiler decrease the flow temp therefore could be running for example at 60* as just doesn’t need the 75* to achieve target temperature?
2) if the outside temp is mild, again would the boiler only run at a lower temp again as just doesn’t need the full 75* to achieve target ?
3) I have a old house full of cold and draughts with high ceilings. I need to force my boiler to maintain a high / hot radiator temp output to keep the place warm even on milder days. Is there a way to do this? It’s almost as if the boiler is too clever but just work in my setting.
lastly, if I run in P1, should this test the system on full blast as I’m half wondering if there’s something wrong and the boiler just can’t reach full temp ie blocked heat exchanger or even stuck diverted valve. I want to test the system at 75* to see if it can reach that temp and then I can eliminate that as an issue.
Thanks in advance.
I have a vailant plus 630 R1. Approx 18 years. Clean as a whistle as recently had power flush inc chems so know all is clean and well.
Despite setting the rad temp to say 75*, it rarely if ever runs to that temp. it’s generally max at 60* and as low as 50*.
I’ve read countless articles and spoken to several engineers and need clarification to the following pls:
1) if rad temp (not room stat) is set to 75*, and the room is nearing its target temp, does the boiler decrease the flow temp therefore could be running for example at 60* as just doesn’t need the 75* to achieve target temperature?
2) if the outside temp is mild, again would the boiler only run at a lower temp again as just doesn’t need the full 75* to achieve target ?
3) I have a old house full of cold and draughts with high ceilings. I need to force my boiler to maintain a high / hot radiator temp output to keep the place warm even on milder days. Is there a way to do this? It’s almost as if the boiler is too clever but just work in my setting.
lastly, if I run in P1, should this test the system on full blast as I’m half wondering if there’s something wrong and the boiler just can’t reach full temp ie blocked heat exchanger or even stuck diverted valve. I want to test the system at 75* to see if it can reach that temp and then I can eliminate that as an issue.
Thanks in advance.
