Open vent system.

[Lee Appleton]

Ideally, the vent should be adjacent to the (new) header tank with a very short cold water stub from the tank (like mine) but should still be ok if I'm interpreting your reply to mean that you will connect the cold water straight across (5ft or so) from, and teed into the vent.
Obviously the connection can't be higher than the tank outlet as no make up water could flow when/if required.

Ideally, the vent should be adjacent to the (new) header tank with a very short cold water stub from the tank (like mine) but should still be ok if I'm interpreting your reply to mean that you will connect the cold water straight across (5ft or so) from, and teed into the vent.
Obviously the connection can't be higher than the tank outlet as no make up water could flow when/if required.

I have attached on of my doggy drawings to show how it would be connected.

 

[John.g]

Drawing as in post 16? where it will be connected to the top right of the "H"?

 

[Lee Appleton]

Drawing as in post 16? where it will be connected to the top right of the "H"?

Sorry as its 22mm I thought it would connect to the top left, it's the cold feed 15mm is on the current top right side or do I need to change this and bung the top left 22mm. I had in my mind connect the CW to the open vent pipe which is top left of the H.

 

[John.g]

I'm getting increasingly confused with this Lee.

Just answer, if you don't mind, these queries one by one.

1. Do you (or have you) propose(d) to run a 22 MM vent to the new header tank?.

2. Do you intend to run a 22MM CW supply to this from the new header tank.

3. Where do you propose to connect in this CW supply to the 22MM vent.

 

[John.g]

Here is a very simple schematic of my proposal, can you just post something similar with yours.

 

[Lee Appleton]

I'm getting increasingly confused with this Lee.

I am very sorry John for the confusion.
1. I did intend to run the 22mm vent pipe to the tank and combine it with cw outlet using the tee as per your system.
2.yes
3.i thought the new 22mm supply would run to the left top side of the H which is the current vent pipe as in the attached. The top right is the curr 15mm cw supply that I thought needed to be capped.
Apologies again I just didn't want to make a mistake.

Just answer, if you don't mind, these queries one by one.

1. Do you (or have you) propose(d) to run a 22 MM vent to the new header tank?.

2. Do you intend to run a 22MM CW supply to this from the new header tank.

3. Where do you propose to connect in this CW supply to the 22MM vent.

Here is a very simple schematic of my proposal, can you just post something similar with yours.

Thank you for your patience John that is exactly what I thought I had to do but didn't explain it very well.

Here is a very simple schematic of my proposal, can you just post something similar with yours.

Thank you for your patience John, thats exactly what I thought I need to do but didn't explain it very well.
I am combining the cw feed as per your drawing using 22mm and capping off the 15mm supply.

Thanks again
Lee

 

[John.g]

Great, go for it!!, how far roughly will the run of CW feed be?.

It would also help if you had/have a isol valve on the cold feed to the (ballcock) header tank and just crack this open to trickle in the water to top up the system sfter partial drain down as it helps the air to escape up the vent and at the same time allow the trickle of water to flow downwards.

 

[Lee Appleton]

Great, go for it!!, how far roughly will the run of CW feed be?.

It would also help if you had/have a isol valve on the cold feed to the (ballcock) header tank and just crack this open to trickle in the water to top up the system sfter partial drain down as it helps the air to escape up the vent and at the same time allow the trickle of water to flow downwards.

From the bottom of the tee of the cw tank to the top of the H left hand side its about 5'. I have an isolated valve so will fill slowly. Thanks again it will be a relief to get it working properly.

 

[Deleted member 123817]

Let's hope so, I was asking the dotted line distance from the tank to where it will Jon the T

 

[Lee Appleton]

Let's hope so, I was asking the dotted line distance from the tank to where it will Jon the T

I will get the tee within an 1" of the tank outlet.

 

[John.g]

That should do the trick Lee.

 

[Lee Appleton]

That should do the trick Lee.

Thank you, I do appreciate all of your help.