Discussion
I have a traditional boiler and hot water tank. I have recently added a en-suite to the loft conversion in the attic, so I had a shower pump fitted. The plumber who fitted it wasn't great but it worked OK for a while. When we came back from holiday, it wouldn't work and there was air in the pipework. So I checked the installation instructions, and the plumber hadn't fitted a gravity loop. So I fitted a gravity loop, and again it worked for a bit. However we are obviously getting air from the tank into the pump.
A further check into the installation reveals that it he has just fitted the take off from the tank straight into the top of the tank, without installing an S flange.
So, how do I go about adjusting this pipework to include an S flange? The pipe in the centre of the tank, goes to a T, to the right and down is the gravity feed for the hot water outlets on the ground and first floor. The other side of the T goes up into the attic as a vent / overflow back into the header tank. The shower is connected to the pipe on the right hand side.
The shower flange has a T, one vertical and one horizontal. The feed for the shower comes out the side, and will connect to the gravity loop, but what do I do with the vent? Can I T that into the existing vent?
A further check into the installation reveals that it he has just fitted the take off from the tank straight into the top of the tank, without installing an S flange.
So, how do I go about adjusting this pipework to include an S flange? The pipe in the centre of the tank, goes to a T, to the right and down is the gravity feed for the hot water outlets on the ground and first floor. The other side of the T goes up into the attic as a vent / overflow back into the header tank. The shower is connected to the pipe on the right hand side.
The shower flange has a T, one vertical and one horizontal. The feed for the shower comes out the side, and will connect to the gravity loop, but what do I do with the vent? Can I T that into the existing vent?
That's not a good installation.
Ideally the shower will be fed from a separate feed via an Essex flange with the expansion on the original hot water feed or via a slurry flange if only one outlet. The slurry flange has a seperate outlet for the shower pump taken from lower within the cylinder.
Ideally the shower will be fed from a separate feed via an Essex flange with the expansion on the original hot water feed or via a slurry flange if only one outlet. The slurry flange has a seperate outlet for the shower pump taken from lower within the cylinder.
Thanks, I don't think I'll be able to fit another outlet lower down the tank (the airing cupboard is built tight around the tank). I think I have two options;
1. Take the pipework off the current shower outlet, fit a blanking plug, then fit a s flange to the central outlet, taking a feed off the side for the shower, then run a section up to another T, alter the supply pipework to connect to this side of the T and then adjust the vent pipework to connect into the top of the T.
2. Take the pipework off the current shower outlet, fit an s flange to the tank at that point. Then connect the shower to the side of the flange, and all I have to alter is the vent pipework, connecting the new vertical outlet to the bottom of the vent pipe via a T in that.
1. Take the pipework off the current shower outlet, fit a blanking plug, then fit a s flange to the central outlet, taking a feed off the side for the shower, then run a section up to another T, alter the supply pipework to connect to this side of the T and then adjust the vent pipework to connect into the top of the T.
2. Take the pipework off the current shower outlet, fit an s flange to the tank at that point. Then connect the shower to the side of the flange, and all I have to alter is the vent pipework, connecting the new vertical outlet to the bottom of the vent pipe via a T in that.
Arrrgghhhh! I ordered and picked up one of these;
http://www.screwfix.com/p/salamander-pumps-s-tank-...
However, both outlets on my tank are 22mm, and the flange has a 1" BSP thread on the bottom of it. I've been round B&Q, Screwfix and Toolstation and can't find an adaptor that will work.
Does anyone know where I can get an adaptor that will screw onto a 22mm thread and have a 1" BSP thread on other end?
http://www.screwfix.com/p/salamander-pumps-s-tank-...
However, both outlets on my tank are 22mm, and the flange has a 1" BSP thread on the bottom of it. I've been round B&Q, Screwfix and Toolstation and can't find an adaptor that will work.
Does anyone know where I can get an adaptor that will screw onto a 22mm thread and have a 1" BSP thread on other end?
GuinnessMK said:
Arrrgghhhh! I ordered and picked up one of these;
http://www.screwfix.com/p/salamander-pumps-s-tank-...
However, both outlets on my tank are 22mm, and the flange has a 1" BSP thread on the bottom of it. I've been round B&Q, Screwfix and Toolstation and can't find an adaptor that will work.
Does anyone know where I can get an adaptor that will screw onto a 22mm thread and have a 1" BSP thread on other end?
Most cylinders have an 1" BSP female thread on the top. Looks like you got a 1"BSP male-22mm compression adaptor in there at the moment.http://www.screwfix.com/p/salamander-pumps-s-tank-...
However, both outlets on my tank are 22mm, and the flange has a 1" BSP thread on the bottom of it. I've been round B&Q, Screwfix and Toolstation and can't find an adaptor that will work.
Does anyone know where I can get an adaptor that will screw onto a 22mm thread and have a 1" BSP thread on other end?
GuinnessMK said:
Rickyy said:
Most cylinders have an 1" BSP female thread on the top. Looks like you got a 1"BSP male-22mm compression adaptor at the moment.
The elbow fitting?That 22mm pipe coming out of the immersion adaptor, what is that feeding?
GuinnessMK said:
The 22mm pipe coming out of the immersion adaptor was feeding the shower pump 
Looks like another attempt next weekend.
Cap that one off, fit the new flange where that brass elbow is and use the bottom outlet of the flange for the shower pump and the top for the main outlet.Looks like another attempt next weekend.
It's also worth noting that you may need to install an extra header tank. A shower pump can drain a tank faster than the mains can refill it. This could also be the source of air in the pump.
Simpo Two said:
GuinnessMK said:
The 22mm pipe coming out of the immersion adaptor was feeding the shower pump
So... isn't that where the flange should go? I'm confused between the two outlets.The immersion adaptor is non standard, I've not seen one like that before, only a twin 15mm adaptor that forms a coil to heat the cylinder from the boiler.
Simpo Two said:
Rickyy said:
No, the flange replaces the brass elbow.
Agreed, normally it would, but in this case I thought he said the shower was plumbed to the immersion heater outlet... so using that again would minimise any refangling... ah well!Remove the elbow from the top and fit the flange correctly. You'll then have a bit of copper work to adjust the vent and hot distribution pipe to fit as it'll be coming out vertical from the cylinder, not horizontal at the same level as you currently have.
Remove the current shower take off and the immersion blank and fit the biggest immersion you get fit to the cylinder and also fit in with the size of the cupboard while you're there. A useful backup device. Not expensive, more point having a blanking plate.
This'll make it more conventional, you'll have an electric immersion backup to heat the water if the boiler fails. The hot taps will work, it'll be able to vent, the shower won't take in air.
Remove the current shower take off and the immersion blank and fit the biggest immersion you get fit to the cylinder and also fit in with the size of the cupboard while you're there. A useful backup device. Not expensive, more point having a blanking plate.
This'll make it more conventional, you'll have an electric immersion backup to heat the water if the boiler fails. The hot taps will work, it'll be able to vent, the shower won't take in air.
Arrrrgghhhhh. Another week goes by, another hangover on a Sunday, and still I can't get this sorted.
Turns out the other connection to the tank is a 3/4" outlet. So the 1" pump thing won't connect. Can't use a 3/4" to 1" adaptor as then the dip tube won't fit through.
Looks like I'm going to have to order a 3/4" flange instead. But that won't be in until tomorrow, so I've got to put it all back together, again.
Turns out the other connection to the tank is a 3/4" outlet. So the 1" pump thing won't connect. Can't use a 3/4" to 1" adaptor as then the dip tube won't fit through.
Looks like I'm going to have to order a 3/4" flange instead. But that won't be in until tomorrow, so I've got to put it all back together, again.
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