Extending Hot Water Feeds to New Extension

MJN

Joined
30 Apr 2008
Messages
759
Reaction score
119
Location
Wiltshire
Country
United Kingdom
Not necessarily - it might just mean the shower flow is still exceeding the (increased) minimum flow meter rate whereas the new tap isn't. Put the shower on hot only and measure that rate too.
 
Joined
2 May 2007
Messages
590
Reaction score
4
Country
United Kingdom
when we say fill a bucket, i this doesnt have to be gallons right, i do this for a litre or two litres, just time it
 

MJN

Joined
30 Apr 2008
Messages
759
Reaction score
119
Location
Wiltshire
Country
United Kingdom
Yeah that'd be fine, it's just the more you fill the smaller the error margin but no need to go overboard (like I would!).
 
Joined
2 May 2007
Messages
590
Reaction score
4
Country
United Kingdom
Ok, i installed the new tap, opened the isolators and this one does actually provide hot water. Once this one was installed i tried the problematic one and that one works too. I have even tried it first thing in the morning before anyting else was on and it actually heated up. The only thing that i can think was an airlock. But all good now
Thanks for all your help
 
Joined
9 Apr 2010
Messages
13,951
Reaction score
2,298
Location
Hertfordshire
Country
United Kingdom
2 pages of back and forward and you think its an airlock?

I bet the isolation valve was only partly open.

Andy
 
Joined
4 Oct 2012
Messages
9,118
Reaction score
2,705
Location
East Renfrewshire
Country
United Kingdom
Yup, if all you have done is add a new tap and now everything is ok then it probably wouldn't be an airlock with a mains pressurised, open ended pipe. We use mains pressure water to flush airlocks out of gravity systems.

As suggested, chances are something wasn't open properly and there wasn't enough flow through the boiler to activate the switch.
 
Top