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PostPosted: Mon Feb 12, 2018 3:16 pm 
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Quicky guys :-)

Can I cut into tank for an extra outlet for my shower pump where I've highlighted (badly!) in Red? It will be situated above an existing outlet as seen in pic.

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Also whilst I'm here, does anyone know what the 15mm pipe is for that is teed off and going off to the left out of shot? it has a stop end on the end of pipe :scratch:


Thanks.


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PostPosted: Mon Feb 12, 2018 3:34 pm 
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The outlet from the cold water storage cistern (CWSC) which feeds a shower pump should be LOWER than the outlet which feeds the hot water cylinder. This ensures that, should the CWSC run dry, the hot supply to the shower goes off before the cold. Do it the other way round and you risk scalding.


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PostPosted: Mon Feb 12, 2018 3:38 pm 
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andy48 wrote:
The outlet from the cold water storage cistern (CWSC) which feeds a shower pump should be LOWER than the outlet which feeds the hot water cylinder. This ensures that, should the CWSC run dry, the hot supply to the shower goes off before the cold. Do it the other way round and you risk scalding.


Balls :cb not an awful lot of room to go below OR either side as the tank has an uneven shape to it.


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PostPosted: Mon Feb 12, 2018 4:49 pm 
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Another consideration to upset you................

How big is the cistern and how powerful is the pump? Looks like that will empty very fast if you take both hot and cold from it

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PostPosted: Mon Feb 12, 2018 6:09 pm 
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:withstupid:

May well be that the 15mm pipe was to a redundant power shower that was removed because the cold water tank kept emptying...

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PostPosted: Mon Feb 12, 2018 8:31 pm 
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wine~o wrote:
:withstupid:

May well be that the 15mm pipe was to a redundant power shower that was removed because the cold water tank kept emptying...


Hmm, it's possible but hopefully it's not the case!

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Razor wrote:
Another consideration to upset you................

How big is the cistern and how powerful is the pump? Looks like that will empty very fast if you take both hot and cold from it


Cistern measures 60W x 70L x 53D so I think it will ok! pump is 1.5bar.


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PostPosted: Mon Feb 12, 2018 9:04 pm 
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1. Move the existing outlet to where your red line indicates the new one.
2. Have the new one exiting from where the old one is.
3. Its not really the pressure of the pump you need to be concerned with, its the flow through the shower (litres / minute) at 1.5 bar. From your measurements, the tank is about 200 litres (assuming your height is to the top of the tank). Should give you 10 to 15 minutes at 10 litres / minute allowing a 60:40 hot : cold split.
4. Both outlets from the cistern should be 22mm pipe.



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PostPosted: Mon Feb 12, 2018 9:06 pm 
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That's about 222 litres, but that assumes the measurements you gave are in cm, and that the tank is 100% full


1.5 Bar is the pressure your pump can pump up to. (How much "force" the water has) What you need to check is flow rate. I just looked at a sump pump for some figures, and the 2nd one on screwfix can pump 225 Litres / minute, so even that would (in theory) empty your tank in just under a minute.

Looking at shower pumps, they seem to average 32 LPM so that means you could stay in the shower for just under 7 minutes max, or just over 3 minutes if the tank is supplying hot and cold.

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PostPosted: Mon Feb 12, 2018 9:26 pm 
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It's a 114 litre cistern guys.... trust me :wink:

Change it for a proper one with a bylaw 30 kit would be my advice

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PostPosted: Mon Feb 12, 2018 9:32 pm 
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Check the measurements :salute:

https://www.wickes.co.uk/Wickes-Cold-Wa ... 9/p/443154

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PostPosted: Mon Feb 12, 2018 9:40 pm 
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Cheers all for the advice, I do have some doubts on the cistern but will see how I go... I only intend on having a very quick shower :lol: If it comes to that<---- translates to I don't really want to be fitting a new cistern :oops:


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PostPosted: Mon Feb 12, 2018 10:17 pm 
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I’m with Razor on this one.

Either replace with a larger tank or possibly fit another to run in parallel with this one, if you get what I mean.

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PostPosted: Tue Feb 13, 2018 6:06 pm 
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Help!
Ive hit a problem and the Mrs aint happy as the water/heating is off :oops:

Pic of issue, cant upload to site on my phone for some reason.

http://resizeimage.net/viewimg/6oSPTqCik0MNWgJv/APwCO/20180213_165338.jpg

Warix flange wont fit as that has a 1" male screw connection and the cylinder has a male connection too with no way of it coming out by the looks of it :cb

Any ideas lads? Mrs is not happy!!


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PostPosted: Tue Feb 13, 2018 6:19 pm 
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leew wrote:
Help!
Ive hit a problem and the Mrs aint happy as the water/heating is off :oops:

Pic of issue, cant upload to site on my phone for some reason.

http://resizeimage.net/viewimg/6oSPTqCik0MNWgJv/APwCO/20180213_165338.jpg

Warix flange wont fit as that has a 1" male screw connection and the cylinder has a male connection too with no way of it coming out by the looks of it :cb

Any ideas lads? Mrs is not happy!!


They're still open!!

Some loctite 55 string and one of these:

https://www.screwfix.com/p/female-socket-1-x/30129

Run Forrest run :lol: :lol: :lol:

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donnas-dream-house-charity-t52110.html



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PostPosted: Tue Feb 13, 2018 6:24 pm 
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Razor wrote:
leew wrote:
Help!
Ive hit a problem and the Mrs aint happy as the water/heating is off :oops:

Pic of issue, cant upload to site on my phone for some reason.

http://resizeimage.net/viewimg/6oSPTqCik0MNWgJv/APwCO/20180213_165338.jpg

Warix flange wont fit as that has a 1" male screw connection and the cylinder has a male connection too with no way of it coming out by the looks of it :cb

Any ideas lads? Mrs is not happy!!


They're still open!!

Some loctite 55 string and one of these:

https://www.screwfix.com/p/female-socket-1-x/30129

Run Forrest run :lol: :lol: :lol:


Cheers Razor, top man just threatened me with the pancake mix :wtf: :lol:

Quicky, will PTFE tape do or boss white got that you see.


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