Boosting supply for an electric shower

[Colin68]

Hi All,

I was invited to quote for some bath room mods the other day, particularly to improve the showering for all the family. There set up is as follows .. Bore hole pumped to 4 x header tanks, (in series) ... over the bath shower with a 3 amp booster pump in the circuit .. takes hot from 117 litre cylinder heated via a conventional boiler set up. Customer wants an electic shower as the current cylinder won't service the 3 women in the house all showering in the morning. Their property is a Bungalow and the head is about 0.25 bar max so no good for an 8.5 kw shower?.

Could a booster pump be added in the circuit before the electric shower and after a dedicated cold supply from one of the header tanks? .. like a salamander or simkilar ..to make the desired 0.5 bar min for an electric shower or even 1 bar. Anyone had this issue and solved it?

 

[WaterTight]

I can service 3 women in the morning. Give me their address.

 

[Colin68]

Yeeeehaaaaa ... you stud you

 

[Ian10261]

Hi All,

I was invited to quote for some bath room mods the other day, particularly to improve the showering for all the family. There set up is as follows .. Bore hole pumped to 4 x header tanks, (in series) ... over the bath shower with a 3 amp booster pump in the circuit .. takes hot from 117 litre cylinder heated via a conventional boiler set up. Customer wants an electic shower as the current cylinder won't service the 3 women in the house all showering in the morning. Their property is a Bungalow and the head is about 0.25 bar max so no good for an 8.5 kw shower?.

Could a booster pump be added in the circuit before the electric shower and after a dedicated cold supply from one of the header tanks? .. like a salamander or simkilar ..to make the desired 0.5 bar min for an electric shower or even 1 bar. Anyone had this issue and solved it?

Seen this done on a house near me. Single impeller pump supplied from a CWSC, pump was wired off the on/off switch on the shower unit. Works OK.

 

[Colin68]

nice one Ian .. so impeller added on supply from the CWSC .. shower turns on .. pump goes and then the electric shower does the rest ?

 

[Ian10261]

nice one Ian .. so impeller added on supply from the CWSC .. shower turns on .. pump goes and then the electric shower does the rest ?

Yep, thats about the size of it. When icame across this one i had to replace the electric shower unit and was initially a little aprehensive about the job. If i remember rightly it was a Dolphin bathrooms job originally and the original shower unit was wired so that the pump ran when the shower itself was switched on. This obviousley means that the pump was wired back to the shower so if you do it this way then you really need to know what you're doing, this guy obviously did and the terminals in the shower unit were readily accessible so no problem. However, the replacement unit i fitted (Mira, my favourite) was'nt quite as friendly on this score so the only way it could be done was to wire it so the pump came on when the pull switch was operated, then switch on the shower and bingo, not the way i'd preferred but the result was good and its still running ok 2 years on. Hope this helps.