s plan to a y plan

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ewoodblue

how do i convert a s plan central heating system to a y plan and what extra components do i need
 
ewoodblue said:
how do i convert a s plan central heating system to a y plan and what extra components do i need
Click to expand...

Why would u want to? They do the exact same job.

They can both do what each other can do. Waste of money and time if u ask me.
 
Only an examination setter could ask that!! Obviously another non jobsworth who has no idea about the industry.

To help with answer, Y plan has flow from boiler coming up to a 3 port zone valve. Right (or left!) to hot water cylinder and Left (or right!) to radiators. Then a spaghetti nest of wires.

S plan has flow from boiler, dividing into two at a tee. After tee a 2 port zone valve is put on flow to hot water cylinder and a 2 port zone valve is put on flow to central heating system. Then a logical layout of a few wires.

I bet I've got something wrong here, but if you get your diagrams out you'll see how this makes some sort of sense.

Most of us (plumbers and electricians) don't like Y plans because there are frequently problems with the wiring. S plans are simple and tend to work much better and it's easier and quicker to find a fault. Hence the comments in earlier posts!!
 
I did this exact same job the other week. I enjoyed it, but then I'm strange like that.

N.B. To add to previous post, you can take the bypass out if you feel like it.

P.S. Wiring; I always rip out the rubbish that you inevitably find and fit a new Drayton WC1. Adds an hour to the job and you know it's going to work properly.
 
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dontknowitall said:
Only an examination setter could ask that!! Obviously another non jobsworth who has no idea about the industry.

To help with answer, Y plan has flow from boiler coming up to a 3 port zone valve. Right (or left!) to hot water cylinder and Left (or right!) to radiators. Then a spaghetti nest of wires.

S plan has flow from boiler, dividing into two at a tee. After tee a 2 port zone valve is put on flow to hot water cylinder and a 2 port zone valve is put on flow to central heating
system. Then a logical layout of a few wires.

I bet I've got something wrong here, but if
you get your diagrams out you'll see how this makes some sort of sense.

Most of us (plumbers and electricians) don't like Y plans because there are frequently problems with the wiring. S plans are simple and tend to work much better and it's easier and quicker to find a fault. Hence the comments in earlier posts!!
Click to expand...

Keep it simple, S plan will always be my choice.

Added bonus with S plan is if it's faulty and u can't change the valve head only then u can bung the system and change the body aswell without draining the whole system and running the airlock risk. Changing a 3port valve and body is a full drain down as bunging is not an option.

S plan loyal
 
Much better flow through an S plan . Have a look at the pressure drop charts that come with the valves. Mind you you wouldnt notice anything on a small system
 
ewoodblue said:
how do i convert a s plan central heating system to a y plan and what extra components do i need
Click to expand...

To answer your original question

Materials required
A mid position valve
A bit 3 core +e
A couple of elbows, unions, a tee, a blank end and a meter or so of pipe.
A packet of 3 amp fuses if you are mince with the wiring

What idiot would set an exam question like that? and what purpose would it serve? To make you think i suppose but you are hardly thinking for yourself if you need the internet for an answer are you?

No benifit is gained from converting and as said by previous posters an S plan is the better choice for various reasons.
 
I would just be quite happy, if I had any plan when I walked on a job,to have a chose must be greeeeat!!!😀
 
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