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Ask The Trades › DIY Forum › Plumbing Questions › Rad not getting hot

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Rad not getting hot (Read 3955 times)

Chaddy

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Rad not getting hot
Feb 8^th, 2005, 7:34pm

Hi guys. Added a new rad to my sister in laws house today. They use the garage as a games room and wanted it heated.
The hall rad pipes go throught the garage. I T'd off the feed and return pipes for that rad.
The problem is that the new rad doesn't get hot!! Hot water reaches the TRV and some is obviously getting in to the rad cause there is a slight difference in temperature between the top and bottom of the rad.
Also the hall rad doesn't get as hot as the rest of the rads in the house.
Any ideas??

Cheers
Ken Grin

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PEDANTICVINDICTIVEMAN Trade Member Offline Cant talk,old folks to rip off and tanks to pee in Posts: 846 Total Thanks: 0 For This Post: 0 Gender: Trade: Not Specified	Re: Rad not getting hot Reply #1 - Feb 8^th, 2005, 7:54pm If you have teed off 8m or 10mm size pipes you wasted your time, if you have teed off 15 mm pipes there should be no problem other than valves not open, air or dirt, take your pick.
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Chaddy GDPR opt-out Total Thanks: 0 For This Post: 0	Re: Rad not getting hot Reply #2 - Feb 8^th, 2005, 7:56pm T'd off 15mm no air, so i guess it must be crud!!
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JerryD GDPR opt-out Total Thanks: 0 For This Post: 0	Re: Rad not getting hot Reply #3 - Feb 8^th, 2005, 8:00pm more likely a balancing problem. Balance the whole system and it should work fine.
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Chaddy GDPR opt-out Total Thanks: 0 For This Post: 0	Re: Rad not getting hot Reply #4 - Feb 8^th, 2005, 9:14pm Cheers jerry. Can you just refresh my memory exactly how to, it's been a long time since i last did it and that was the only time!!
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greg GDPR opt-out Total Thanks: 0 For This Post: 0	Re: Rad not getting hot Reply #5 - Feb 8^th, 2005, 9:34pm are the valves open? have you tried closing one valve, bleeding rad, close that valve, open other valve, bleed rad
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JerryD GDPR opt-out Total Thanks: 0 For This Post: 0	Re: Rad not getting hot Reply #6 - Feb 8^th, 2005, 10:26pm there's lots of websites on the subject of balancing here's one http://www.diydata.com/projects/centralheating/balancing/balancing.htm
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Chaddy GDPR opt-out Total Thanks: 0 For This Post: 0	Re: Rad not getting hot Reply #7 - Feb 8^th, 2005, 10:33pm Thanks Jerry as i remembered it.
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Chaddy GDPR opt-out Total Thanks: 0 For This Post: 0	Re: Rad not getting hot Reply #8 - Feb 8^th, 2005, 11:54pm Does anyone know where i can get radiator thermometers from ???
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