shower pump

[mickqc]

hello, hope you can help.
pricing up a bathroom with a shower pump in an 800 quadrant shower.
The cylinder is on the landing with room underneath for the pump.
the header tank (not 50 gallons) is in the attic but only about 18 inches above ceiling joists.
I have done lots of bathroom installations but always stayed away from ones with pumps due to plumbers telling me of probs they`ve had.
can anyone give me any advise, what pump , think i would be better with a negative head unsure about pressure.
also where do you take the T off the cylinder for your input hot and do you take your input cold direct from the header tank.
thanks for help.

 

[mickqc]

just another question, if i get another 25 gallon tank wont it have to be the same height as the existing.
because when i put them on the same level but the tops are different wont it cause problems with overflow and ballcock etc.

 

[Spike295]

No because the ballvalve & overflow are already in the existing one, as long as the new tank isn't lower than the water level of the original(which it probably won't be) or lower than the overflow outlet & as long as they are sat on the same level. It wont matter if the new tank is taller. Or just get a 50 gallon tank & put that in!

 

[mickqc]

not sure if a 50 gallon would fit throught the loft access.
the new tank would then have to have its own overflow.
thanks for help

 

[mickqc]

just got a polypipe 25 gallon tank but its one of those with the small lid about half size.
are these hard to work with and should i go for a model with a full lid.
thanks for help.

 

[mickqc]

all seems ok a week later.
no phonecall yet !!!