would you highly skilled plumbers on here recommend for my hot water. I have a gravity feed tank in loft system, my cold is mains fed so has a lot of flow rate, the hot is rubbish and the shower that runs off the bath taps barely dribbles, I'm looking for a pump to fit just to the hot supply straight from the cylinder and wondered what you good fellows would suggest.
To be honest Phil most of the well known makes are much of a much,but I personally install the salamander pumps with plastic housing their quieter,I have never had any problems with them myself. Hope that helps.
I agree I fitted the CT75+ it's so quite it's like it not there no boom start up noise and customer is over moon with the difference it's made to here existing gravity shower
Which model would you recommend for a single supply, bearing in mind I want to pump the whole hot supply, which is only kitchen sink, bathroom sink and bath with shower on a mixer.
Phil, you will need to feed the cold from the cold storage tank and the hot from the cylinder to balance the pressure. Having mains cold and pumped hot aint a good idea
Dave's right about the pressures especially if it is a thermostatic shower,most of the pumps I fit are twin head and the only single one screwfix do is the CT55+ which will only cope with one shower. May be worth ringing salamander about their single head range 01915162002,or dig really deep in your pocket treat the family and go for an unvented hot water cylinder.
PB, a unvented cylinder is my dream, but unfortunately I really don't have the money at the moment, so was looking at a reasonable cheap fix for now. The system I have is simple really, cylinder in airing cupboard, hot feed to bathroom feeding hot to a sink, bath/shower, this is less than a 4 metre run, then hot water to kitchen sink, which is almost directly under the cylinder just a meter offset, so not a lot of pipe work really, that's why I want to pump all the hot supply, that and not having a power supply under the bath.
Do you need pumped hot in the kitchen?if not leave that on gravity flow and just pump the bathroom the CT55+ would cope with that.
Just thinking out aloud, could the hot water outlet on the cylinder be Simi blocked by limescale, I live in a really hard water area. My hot water flow rate on the kitchen sink is 2.8 litres a minute
So Phil,now you need unvented cylinder and a water softener lol,anything is possible but the kind of kitchen tap you have can reduce flow,especially if it is a 1\4 turn tap what is the flow like at your bath tap?
PB, your not wrong, water here is so hard have to clean kettle out a least once a week, middle daughter in bath at mo, so will check flow rate later.
Right bath hot flow rate is 10 litres a minute, which is to bad is it ??, shower just a dribble though.
Remember your kitchen will be 15mm feed may be going through small bore flexible,are any isolation valves on that feed fullbore or standard. What head have you got between cwsc and shower head?Remember for every metre of head you get only 0.1 of a bar,a pump would make a major improvement to both bathroom and kitchen.Hope that helps a little Phil.
Absolutely, the recommended minimum is 1metre,the other thing you need to remember is you will need a negative head pump as the flow to the shower wouldn't be enough to trigger the flow switch in a standard pump,the negative pump works on a pressure switch.
Would that still be the case if the pump was fitted at the cylinder, also so because the cylinder has a vent pipe back to the CW tank, would I need a valve of some sort to stop the pump pumping water up the vent pipe or sucking in air, both vent and flow are out of the top of the cylinder.