S plan heating system

[Rob brazendale]

Hi guys new to the forum. I’ve landed on a job on a dental surgery. The plumbers have installed new heating and got water system and basically left me to wire it up. Struggling to get my head around it and could do with some help. They’ve installed two boilers that are going to work together, two pumps one for c/h one for h/w. There’s three zone valves two for downstairs and one for upstairs. There’s also a h/w cylinder with a cylinder stat. They then want three room stats for c/h two downstairs and one upstairs. Any would be appreciated cheers

 

[Leesparkykent]

Hi guys new to the forum. I’ve landed on a job on a dental surgery. The plumbers have installed new heating and got water system and basically left me to wire it up. Struggling to get my head around it and could do with some help. They’ve installed two boilers that are going to work together, two pumps one for c/h one for h/w. There’s three zone valves two for downstairs and one for upstairs. There’s also a h/w cylinder with a cylinder stat. They then want three room stats for c/h two downstairs and one upstairs. Any would be appreciated cheers

It’s basicaly an S plan+

 

[Toneyz]

The only thing that has thrown me is the two pumps? what type boilers are they?
No valve for the H/W then?

 

[Yplan]

Are you a qualified sparky?

Separate these zones and the hot water system and draw it out should be easier to get your head round

 

[Shoei]

The only thing that has thrown me is the two pumps? what type boilers are they?
No valve for the H/W then?

Prob a valve short but had a spare pump on the van

 

[Yplan]

The pump on the boiler for the hot water circuit is unusual because it's usually inside the boiler but maybe a secondary return.

 

[buzzlightyear]

The pump on the boiler for the hot water circuit is unusual because it's usually inside the boiler but maybe a secondary return.

go and speak to tap on the brain and ask what system they have put in .

 

[Rob brazendale]

Cheers for the reply’s guys. Sorry I missed the valve for the h/w it does have one. The boilers are Worcester ones. I’m a qualified spark I work on mainly commercial buildings. Not done ant s plan since the am2.

 

[buzzlightyear]

Cheers for the reply’s guys. Sorry I missed the valve for the h/w it does have one. The boilers are Worcester ones. I’m a qualified spark I work on mainly commercial buildings. Not done ant s plan since the am2.

go on the dark tinernet ,and pull of what LZ put on post 2# and file it .

 

[Yplan]

Draw it out on paper for the heating separate from the hot water just to divide and conquer and you will see its rather simple as it's all in series pal.

 

[Rob brazendale]

Thanks. I’ll post a pic up when I’ve drawn it out.

 

[buzzlightyear]

RB ,you need to change your business name sounds like you are robbing electrical.

 

[Toneyz]

Cheers for the reply’s guys. Sorry I missed the valve for the h/w it does have one.

You need to tell us.
so you have 3 heating zones (2 downstairs 1 upstairs) each one with a valve and controlled by a room stat
1 H/W zone valve controlled via tank stat.
two pumps one for the system? one for secondary return?
Is this correct?

 

[Rob brazendale]

Hi Antony this is correct. They want each zone to have its own room stat if this is possible. Cheers

 

[Toneyz]

Has any of this been wired or plumbed?

Hi Antony this is correct. They want each zone to have its own room stat if this is possible. Cheers

Yes one room stat to each valve one tip ask the plumber which valve does which area and mark up each stat. Look at Lee's wiring diagram. Ask the plumber what each component does and post some photo's if possible.

 

[Rob brazendale]

It’s all been plumbed up. I’ll draw up a diagram and post it on here. Cheers

 

[Rob brazendale]

It’s ok been plumed in. Cheers I’ll draw up a diagram and post it on here. Thanks

 

[Leesparkykent]

It’s ok been plumed in. Cheers I’ll draw up a diagram and post it on here. Thanks

What are the two pumps for?

 

[Toneyz]

What are the two pumps for?

This is what I was trying to find out from the OP, Lee we think one is for the system and the other is for secondary return but waiting for the OP to confirm from the plumber.

 

[Leesparkykent]

If it’s a secondary return it should be obvious as it will be plumbed into the cylinder secondary return...The pump will have bronze or SS impellers and the housing is usually yellow if it’s a grundfos pump.