installing zone valves

[tomsim]

what does it mean when a zone valve says it can't be installed acuator facing down? does it mean with the bit with the motor upside down?

 

[tomsim]

Untitled

• tomsim
• 23 Oct 2012
• 1

Would the diagram on the left cause problems when both valves were open as the water would take the easyiest route and just fow straight forward and go through the zone valve on the left and not tee off to the ova zone valve?

 

[matt1e]

1 yes
2 no

 

[tomsim]

1 yes
2 no

Thanks so If I install my pipework like the diagram on the left this will be ok?

 

[Armo74]

Yes

 

[picasso]

You might need a bypass depending on what boiler you got.

 

[tomsim]

Thanks for the help will have a look

 

[doitall]

Either will do if you have balancing valves on the returns as you should.

 

[tomsim]

Either will do if you have balancing valves on the returns as you should.

Thanks by that do you mean lockshield valves on the rads?

 

[calorific]

No. Both circuits might be balanced by themselves, but not be balanced when both zone valves are open (one circuit might be less restrictive than the other. So you need valves on the return pipes to facilitate this.

 

[tomsim]

I've never seen this flow restricters before when I've seen zoned heating systems. Are they always fitted?

 

[doitall]

I've never seen this flow restricters before when I've seen zoned heating systems. Are they always fitted?

Depends on the size of the system and how cheap the custard wants the job.

Yes, I would always fit lockshield valves on all the returns to balance them.

 

[calorific]

For the sake of a fiver or so for a pair now's the time to put them in.