Where to position a 1.5bar shower pump advice

[mutley racers]

Hi guys, i am in a bit of a dilemma. Am wondering wht is the best option for me to position a pump.

The cylinder does have space by it on the floor, but, the bathroom is about 5 metres away. Now i can not run the pipes under the floor as its concrete.

Is it possible, to have the pump on the floor by the cylinder, and pump into the loft and across and down to the shower? Or would the pump have to work to hard?

In my house, the pump is in the loft just above my shower, with the hot water draw off from the cylinder going straight up into the loft and across. Which seems to work ok.

So, do the pumps suck as well as pump?

Mine definately is not a negative head pump.

Any advice would be much appreciated

Regards

Mutley

 

[SimonJohns]

I would put it in the best place for access and maintenance

Running the pipes up and then back down should be fine. You just may have a lil trouble getting the air out for first use

 

[secret squirrel]

I think if you locate it in the loft next to the cwst then you'll have to have a negative head pump @ £400 ish!

No brainer really, my pump in my house is next to the cylinder and pumps through the loft quite happily.

 

[mutley racers]

Thanks guys. Its just as i thought.

 

[mutley racers]

Also chaps, have you guys used an S Flange from salamander? Top entry. I want to save time and am wondering if this works well?

Cheers

 

[SimonJohns]

I would only use a surrey

Essex scare me. Don't like cutting holes

 

[mutley racers]

he he he. I know what you mean. But i have heard essex flanges are better for some reason. I just don't want to cut it as the cylinder is really old. So i would prefer to avoid it.

As my pump is pumping up and over in the loft, and there could be an air in the system issue, could i put a couple of manual air vents on the pipes in the loft after the pump? Just for commissioning purposes?

 

[SimonJohns]

Don't see why not. It won't hurt anyone having air vents

I'd reccomened the thumb screw vents

 

[mutley racers]

cool. i think i shall do that then. Cheers Simon

 

[mutley racers]

just another thought, as my pipe run from the cwsc to the pump is about 5 metres, should i run it to the pump in 22mm and then branch off 15 to the pump? I think as it is just a feed for the pump, 15mm should be ok?

 

[Best]

Yes, I think you are supposed to put manual vents, anyhow. Pump should be in hot press. Essex flanges are recommended as they are full flow. They are also a more separate supply I guess, but still come from same supply pipe obviously. I wouldn't touch them as they leak. Use Warix or Surrey flange. Worth phoning pump manufacturer for tech advice.

 

[mutley racers]

Thanks best. i did a honeywell wiring course early this year, and the guy said that you should put the vents not on a tea at the highest point where the elbow would be, buy a little bit further from the elbow.

Does anyone else know of this? If so, what is reasoning?

 

[BLOD]

Best place for a pump is on the floor by the cylinder
As long as you have enough flow through the showerhead to work the pumps flow switch you don't need a negative head pump.
Follow the manufacturers instructions regarding the hot water take off just in case youneed to use their guarantee.
Good luck

 

[mutley racers]

Cheers Blod. I shall do that. I would have thought that Salamander would recommend their salamander s flange to go with one of their pumps? But then again, you never know these days.

 

[Best]

Can't see any reason for not fitting vents above tees. Could be an argument though,for all bends to be done with a bender rather than tees or elbows.

 

[SimonJohns]

I assumed that It was going to be installed in speed fit 22mm. No knuckle bends. Maximum flow rates. Sorry for not voicing that

 

[Best]

I am just thinking that, when positioning a pump, the important thing is not the length of the pipe runs leaving it, but the length of the supply pipes to the pump being as short as possible. Hence pump on floor at hot cyl. As far as I know pumps work better with short supply pipes.