new radiator is cold?

jingle68 · Posted: Sun Sep 03, 2006 7:55 pm Post Subject: new radiator is cold?

i have fitted 2 new radiators,each one has a trv on one end and a shut off valve on the other.neither rad is heating up. should i have fitted lockshield valves? what is the difference between lockshield valves and shut off valves?. all the existing rads are working ok.

tomy · Posted: Sun Sep 03, 2006 7:58 pm Post Subject:

Provided you have connected them to the correct pipes you have an airlock .

rob884 · Posted: Sun Sep 03, 2006 8:05 pm Post Subject:

shut all other rads off to increase pump pressure to two rads.

lockshield are for balancing, shut offs are for completly turning off

jingle68 · Posted: Mon Sep 04, 2006 9:10 pm Post Subject:

found the problem, my 'helper' had closed the lockshield valve on the rad nearest the pump. as soon as i opened it, the two rads heated up!

bab · Posted: Mon Sep 04, 2006 9:15 pm Post Subject:

if both rads go off with only 1 valve shut i think u may hav a little design fault. no need to have 2 trv;s in that case,

corgiman · Posted: Mon Sep 04, 2006 11:09 pm Post Subject:

jingle68 wrote:

found the problem, my 'helper' had closed the lockshield valve on the rad nearest the pump. as soon as i opened it, the two rads heated up!

oh dear I dont think you wanted to do that

Babs is right, you may have cocked up a wee bit there

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jingle68 · Posted: Tue Sep 05, 2006 11:03 pm Post Subject:

now im lost....what do you mean?