Hot water booster

[beesley121]

Hi guys,

got a customer who is having problems with the hot water outlets in the bathroom that she has had installed. Basically the pressure from the taps is nearly none existent. Cold is mains fed and is fine. Hot water is from gravity fed cylinder on the same floor.

It's not the best bathroom install I've seen and there's a couple of other little issues that need addressing but none if then are going to increase the pressure at the taps to an acceptable level so I'm looking at installing a pump.

anyone know of a pump that is designed to be used for hw outlets? I would think it need to be variable to help balance the pressure at the mixer taps (no cold water tank) and also designed to run longer than a shower pump due to bath filling and also one that is designed to be turned on and off more than a shower pump

anyone have any ideas or does this pump not exist? Thanks in advance. Any other ideas appreciated

 

[PlumbBobBob]

if there is no cold water tank, how is the hot water cylinder fed?

 

[beesley121]

if there is no cold water tank, how is the hot water cylinder fed?

Sorry, just ment the cold water tank is too small to supply both hot and cold water from a pump

 

[mountainman]

What is the capacity of the tank, is it a black plastic one or part of the cylinder?

 

[beesley121]

What is the capacity of the tank, is it a black plastic one or part of the cylinder?

I would estimate approx 10-15gallon

 

[philipb]

Hi,
I fitted a stuart turner 1.6 bar double end shower pump to a bar shower and noticed
like you hot water flow to the house taps was poor so after speaking to stuart turner tech i teed off
the hot output and connected to the hot tap feed,this worked great even though
the cold end wasn't pumping they said it didn't matter,That was 5 years ago and still working
fine.just to add the pump will run every time a tap is opened so the location of the pump
is important as they can be noisy if its in a bedroom.

 

[Howsie]

Its a mess. Explain how it should be fixed or walk away IMHO.

 

[Pumpman6]

When pumping gravity hot V's cold mains I would use a Monsoon universal 2.0 or 3.0 bar single depending on mains pressure. However cold storage is a BIG issue here as you don't really have enough to pump in the 1st place. Bear in mind as you use water from mains as well as pumped hot the refill rate to cold will reduce and could well cause system/pump to run dry. increase cold storage or run the risk/customers risk.