Plumber struggling with vr66 install vaillant

[Phill Peck]

Zone valves don't have a "setting"

So u have heating but no hot water is that correct?

 

[mrbg07546]

Yes the heating is controlled by the thermostat. It works. The hot water don't.

There is a auto and manual setting on the zone valve. He text me the following

"Check hot water zone valve is manually open if it's closed boiler cannot push water in to tank".

 

[Phill Peck]

Yes the heating is controlled by the thermostat. It works. The hot water don't.

There is a auto and manual setting on the zone valve. He text me the following

"Check hot water zone valve is manually open if it's closed boiler cannot push water in to tank".

The vr66 should open that valve.
But feel free to open it.

If the valves have to be manually opened does that not prove they are not required. Or not wired correctly

Ps leave your plumber alone it's Sunday evening.
I'm sure he will sort it tomorrow.

 

[mrbg07546]

The vr66 should open that valve.
But feel free to open it.

If the valves have to be manually opened does that not prove they are not required. Or not wired correctly

Ps leave your plumber alone it's Sunday evening.
I'm sure he will sort it tomorrow.

He actuallly appreciates I helped him wire it.

And for the record the vr65 has a better manual than the vr66. Here is a wiring diagram.


Also vaillant advance support confirmed. Polarity doesn't matter in ebus.

Really appreciates everyone's help on this.

 

[Phill Peck]

The boiler/system setup. Doesn't know it needs to open that valve.

 

[mcmoby69]

https://www.diynot.com/diy/attachments/img_8618-jpg.116661/

Where is the cylinder stat connected to? The white connection looks like wires are missing.

 

[mrbg07546]

It's missing because I have a vaillant unistor. Then you connect to something called the NTC.

 

[Dan Robinson]

https://www.diynot.com/diy/attachments/img_8618-jpg.116661/

Where is the cylinder stat connected to? The white connection looks like wires are missing.

Can these installers tie their shoelaces correctly? It is a fecking mess - polarity reversed, wires missing, cables all over the place. I haven't looked at the recent manuals for this kit, but really it is wiring by numbers - as I said earlier, my wife could do a better job and get it working first time. The Bunny manuals are a mess, but their connection blocks are crystal clear FFS...

I still don't believe there is a professional involved here - I am not even sure that one of those superfluous valves are the right way round anyway (need to read the 4 pipe manual at some point soon).

 

[Steelmasons]

HW MV has been installed the wrong way for a start.....wait for thud when it closes...

 

[Phill Peck]

HW MV has been installed the wrong way for a start.....wait for thud when it closes...

They'll have to get it to open first

 

[Agile]

Does it really need an external HW motor valve?

Why is that function not contained within the boiler?

 

[Dan Robinson]

It is.

 

[oldbuffer]

The Unistor is an unvented cylinder so I guess it needs its own motorised valve as part of the safety chain.

 

[bernardgreen]

Yes the heating is controlled by the thermostat. It works. The hot water don't.

Also vaillant advance support confirmed. Polarity doesn't matter in ebus.

Could you get that cofirmation in writing ?. If Vaillant are using standard ebus physical layer then polarity does matter and there should a fault code for cross polarity on the ebus. A typical ebus to micro-processor interface for data ( receive / transmit ) and power for the device ( 5 volt from IC3 )

 

[Dan Robinson]

The Unistor is an unvented cylinder so I guess it needs its own motorised valve as part of the safety chain.

Ffs bernardgreen. Leave it alone. Google won't help you on this one.