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by danblue
Mon Nov 19, 2007 11:30 am
Forum: Plumbing Forum
Topic: Non reversible TRVs
Replies: 1
Views: 2800

Non reversible TRVs

Can anyone help? i've discovered that (along with two other 'reversible' TRVs fitted to the ruturn) my plumber has fitted a Drayton TR4 on the return. I am pretty sure this TRV is non-reversible. Does this really matter? Am I going to damage the system by leaving it? It's a pressuried system. I've l...
by danblue
Thu Nov 15, 2007 2:59 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: rad has no return?
Replies: 0
Views: 2711

rad has no return?

I've posted another message elsewhere and had good advice. Another brain teaser.... A rad that was fitted onto my system (sealed pressurised system with system boiler, 3 floors, no bypass valve, all trv'd) always seems to have air in it, plus the one behind it, which shares the pipework. i've notice...
by danblue
Mon Nov 12, 2007 10:05 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: AIR IN THE SYSTEM
Replies: 3
Views: 3907

thanks for your help

Thanks for these replies, very useful. Could you clarify how to fit 'against the head' if you are refitting a trv that's reversible? I'd like to check if they have done it correctly. Am I right that if heating is on, hot pipe into rad is flow, cold is return. If both are hot, this is incorrect? Also...
by danblue
Mon Nov 05, 2007 4:38 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: AIR IN THE SYSTEM
Replies: 3
Views: 3907

AIR IN THE SYSTEM

Any help on the following very much appreciated. I've spent thousands on a new system a year ago and the original plumber no longer keen to help, so hopefully someone out there can. System: Worcester 28KW system boiler + flowmaster (unvented) The original pipework has been added to several times but...
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