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    Glow Worm Ultracom 38cxi central heating problem.

    Thanks mickyg. Sorry. Haven't dropped it back down from that first week in the year when I increased it to 80C. Brrrrrr! It can go back down now like you suggest.
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    Glow Worm Ultracom 38cxi central heating problem.

    I had the same issue with our Glow-worm Ultracom 38hxi. When it was installed, it was left at the full output of 38kW which was massively too high for the existing rads we had (know that now!). The effect was that it sounded like a 747 took off from our kitchen every so many minutes with...
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    Older panel steel radiator outputs?

    I've just done a quick experiment on the ECO setting. Whilst outside of the timed period, I increased the ECO to 20.5C whilst the room stat said 21.5C. I then moved the room stat into the kitchen which is a cooler part of the house. The room stat slowly dropped to 19.5C before the boiler...
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    Older panel steel radiator outputs?

    It's set to the factory setting of 15C like you mentioned. Like you, I've never seen the room stat lower than about 18C but I understand what you're saying - the boiler may be coming on at a room stat reading of above 15C in order for it to not go below it. I hadn't thought of that! I thought...
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    Older panel steel radiator outputs?

    I dropped the output to 12kW last night and everything appeared to work fine. No issues this morning with either house or water being heated. We have a programmable Glow-worm Climapro RF room stat but no weather compensation. Will have a look at that. Thanks for mentioning it...
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    Older panel steel radiator outputs?

    It's a long story! Basically, Glow-worm recommended an installer to us who proved himself to not know a lot about CH systems when he replaced our 36-year-old Glow-worm boiler with a new Glow-worm Ultracom 38hxi boiler. Worse was that we found out after the job was finished and Glow-worm...
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    Older panel steel radiator outputs?

    Very much appreciated! May I ask a further question? How many watts should I then allow for our 162 litre cylinder? Many thanks. PS. Any idea who made the 'DD' rads?
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    Older panel steel radiator outputs?

    Does anyone know how to calculate or where I can find the output (watts) for older panel steel radiators? We have the following sizes in our 1970's house: 590mm (H) x 2080mm (W) Double (No fins) 590mm (H) x 1760mm (W) Single (No fin) 590mm (H) x 1600mm (W) Single (No fin) 590mm (H) x...
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    Heating randomly turns on

    It's not a Glow-worm boiler by any chance? Only, I have posted an issue we are suffering from which sounds the same thing here: http://www.diynot.com/forums/viewtopic.php?t=210754 Might be worthing watching mine as well in case someone does make a further suggestion. Good luck!
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    Glow-worm Ultracom 38hxi Problem

    Eco is set to 15 degrees C. The house is a 1970's detached with cavity wall insulation and recent loft insulation fitted. I've never seen the room stat say less than 18.5 degees C in the last 12 months. I thought it could have been that originally. Also, it can't be the frost setting...
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    Glow-worm Ultracom 38hxi Problem

    We have: Glow-worm Ultracom 38hxi boiler. Grundfos 'Super Selectric' UPS 15-60 130 pump (speed currently set to II). Glow-worm Climapro RF thermostat. Westherm TRV's on all radiators (except hallway where thermostat fitted and bathroom towel radiator). 11 radiators. The above replaced a...
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