Pumping Hot Water.

by **bclub14** » Thu Apr 28, 2011 3:18 pm

Hi all, first post hope someone can help. Have a Bungalow with two bathrooms, kitchen, and one toilet with basin, all fed off a tank in the roof and cylinder at ground level. The hot water is pumped to kitchen, bathrooms and toilet, all hot taps run ok except one that is in one of the bathrooms. All pipes are hidden so don't know if it's first on line or last, the problem is that you turn hot tap on, water runs fine for a few seconds and then stops and so doe's the pump, you get a trickle and then it starts pumping again and the water flows ok, this can happen several times before the basin is filled. Any thoughts on this problem, the system was in when we moved in. Thanks for your time.

by **stoneyboy** » Sat Apr 30, 2011 10:42 pm

bclub14,
Probably air being sucked into the pump, if you only partly open the tap and the problem has gone then you will have to restrict the flow from the tap.
end

by **bclub14** » Tue May 03, 2011 4:58 pm

stoneyboy wrote:bclub14,
Probably air being sucked into the pump, if you only partly open the tap and the problem has gone then you will have to restrict the flow from the tap.
end

Hi stoneyboy, this is what I have done up to now, have blown mains back up the hot pipe it wasn't an airlock, turned inline valve to restrict flow, not that, then ran the hot with flexi disconnected from hot tap still doing the same, run's ok for a few seconds then slow for a few seconds, then ok and so on. Just a point that maybe of help, I connected mains to flexi hose on hot tap and ran it for about one minute, to push existing water and any air back up into the tank , then reconnected flexi back onto tap opened inline valve turned tap back on and in ran fine and thought we had solved problem, but then realised it was the mains water coming back down again and once cleared it started playing up again. Sounds like your theory of water being sucked into pump is correct, but how do I cure it??? Thanks.