Recent content by mjburrows

https://en.wiktionary.org/wiki/stripdown https://en.wiktionary.org/wiki/strip_out

I have no professional acumen in central heating and i'm not in the slightest bit emotionally affected by anything you've written. I think it is you who needs to grow a thicker skin. Your whining over who provided me with the crucial piece advice of suggests to me that is you that emotionally...

Yes. My fix was really only intended to get us through the winter. Will probably be replumbing and putting in a new boiler next year once some other jobs are done.

I don't really expect someone who suggests I shouldn't worry about facts to concern himself about the difference between "strip out", meaning "remove", and "strip down" meaning "disassemble". If it's inconsequential whether or not the crap got into the pump before after the clean, why mention...

All fixed now! Thanks to everyone who helped. Here is how I would proceed if faced with short cycling again. 1. Check room thermostat working properly 2. Buy a digital thermometer with two sensors like this https://www.amazon.co.uk/dp/B071RNW2C6?psc=1&ref=ppx_yo2ov_dt_b_product_details and...

I assure you I'm not worrying about facts and figures, but I do wonder about the quality of advice of someone who holds them in such disdain. Here is how how I managed to measure pressures to 1 decimal place.

"strip out the pump" isn't that helpful unless you say what to do with it once it's stripped out. And all the evidence I have suggests the impeller was jammed with crap before the clean.

Good suggestion. The impeller was nearly full of baked in crap. I spent 20 mins poking it out with a bit of stiff wire and now produces a 5m head rather than the 1.5m before. Thanks!

Yes, it's copper

Potterton suprima 70

Just a typo. Should have written x800.

my mistake, I should have written x800

Not a joke. It's a mistake. I should have written x800

Moved into 4 bed detached Victorian house last year. Wasn't particularly warm over winter and have decided to investigate. Found boiler is short cycling, 2 minutes on 2 minutes off. Boiler switches off when outlet temp reaches about 75 C, and inlet temp is 55 C. Cleaned out system with Sentinel...

++ Thanks! I had exactly the same problem. It's a very clever design, but it's a real shame the instructions don't explain it better.