Fitting a shower pump onto this cylinder

[stevedd]

Hi

I have just purchased a new pump and now it comes to fitting I seem to be a little confused with the current setup of my cylinder. Would I be right in thinking the below is a Warix Flange?

If so or not how would I go about adding the pump? As you can see I have no room at the side of the boiler for the pump so I am thinking to put it on the shelf I have removed straight above?

Thank you in advance and I have added pictures to try and illustrate my problem.

 

[Plumbstar Tom]

Hi There

Thats not a warix flange at all? who told you it was?

If it was me I would use an essex flange into the cylinder and pop the pump on the shelf above ensuring I used an anti gravitational loop

Remeber, incorrect fitting of a pump will void its warranty and limit its lifespan dramatically

 

[stevedd]

Hi thank you for this, I tried to explain it to somebody and this is what they thought. I was looking at the essex flange originally the old shower comes off the vent pipe going up and I wondered if their was an easier way to utilise this.

 

[stevedd]

Also I have read on another forum?

You could try teeing off the bottom of a 45 degree top entry angled vent but Salamander only recommend this fort their CT & NP

Could I do this as I am using a Salamander CT50 pump? If so would I do this just above the pump I will be placing on the shelf?

Regards,

Steve

 

[Plumbstar Tom]

You dont have a 45 degree top entry vent though, yours is 90 degrees

The other option you have is to take it about 6 inches below the vent Tee

You see in the top picture the highest horizontal pipe that goes from the top of the cylinder to a Tee. That Tee is the vent Tee so if you take a draw off as I stated above you should be fine as it will limit air getting to the pump

The other option is a surrey flange (google it) but I am not a fan of them at all as they are prone to letting air in

IMHO

 

[stevedd]

Thanks Tom, that sounds fine I need to draw off 15mm due to it being a 15mm pump. Would I have any issues drawing off on this horizontal pipe as it will be vertical and may cause an inverted loop due to the pump being above it?

 

[Plumbstar Tom]

you will need to draw off below the vent tee NOT from the horizontal

Then take the pipe work down and back up creating an anti gravitational loop

 

[stevedd]

So basically where I have arrowed before. I will then create a loop into the pump? I think this will be much much easier than using a surrey flange. I think the pump type aswell doesn't demand too much compared to others?

 

[Plumbstar Tom]

yep. and i wouldn't know the pumps demand