Pocster

Digest fellas !! The HP pump isn’t circulating through the UFH, it’s only circulating to the buffer. There are pumps on each of the UFH manifolds that draw the heat from the buffer when one of their respective zones call. The actuators will close and the pump stop circulating once the rooms are satisfied so I’m not sure what constant circulating or overheating they are talking about. The flow temperature from the heat pump is weather compensated at a maximum flow temperature of 35C at -1.6C external temp. down to 20C at 15C external temp. The mixers are mechanical so there is no control, they are set manually. The minimum temperature they can be set to (35C) is higher than the maximum design temperature of your system so they are practically redundant as under the design conditions the heat pump will not produce heat higher than this. If you want to add mixers you will need to add an additional pump and control on the buffer side to take the heat from the buffer to the manifolds when either of them called. Also, as the mixer wont completely close the flow temperature will need to be set higher to compensate for this mixing and increase the running costs. I do not recommend mixers on a low temperature system.

This is exactly what I was thinking .

Lol @Nickfromwales you’ll like this . My guy hasn’t replied yet . So for fun I just called 2 random online ufh / ASHP retailers whom have a technical support team . Both said blender not needed and they don’t sell a blender with their ashp systems . Their logic being the ASHP never generates water hot enough to be an issue . Now don’t shoot the messenger !! ?

To late . They’re doing everything I.e pv , uvc , ASHP So I’m obliged to the contract . Pv in . Global pandemic put a hold on things . So only just back in comms with them .

My installer doesn’t think a blending valve is needed for ufh ASHP . I’ve sent him some of the comments from here - be interesting to hear his view.

Yes . They are expensive for what they are but takes 5 mins to install

Excellent! I’ll check out the Salus ones ! ?

Think I fancy pixie Lott - just saying - bet she knows everything about ufh .

Ok . That simplifies it - blending isn’t something I fiddle with . Makes life easier ! . Though an actuator per zone and a z wave relay per actuator . It seems strange actuators are closed by default and open when powered . Basically using electric just to stay open - would of assumed they are powered open / closed and then just stay in that position not using power ( like a trv type screw thread to open and close ) .

Ok Here’s my ‘logic ‘ . To automate each zone I have an electrically operated actuator per zone . If no zones are being heated then pump is off . Do I need to automate the mixing ? - or do I not care about that I.e water into the ufh is always blended. ??

I’m confused now ! I thought no blending valve for ufh but valve for dhw and ASHP . But I’m confused ....

Always tell the council to go F themselves. They try everything on ; thieving gits! ( I'm not a council fan....)

Hey @Abbi ; welcome. There is tons to learn and lots of mistakes to make ( talking from my own experience of course ). Now is the time to be brave and creative though. I can hear a groan coming from the regulars......... Have you considered walk on glazing?. For that wow factor........?

Can I ask for the entire 2bn?

Could do . Need to check the price

The only reason is when I’m in the living area underground and someone rings the doorbell I can’t be arsed to run up the stairs to open the door . With some code I can see who is at the door and open it if I wish . The fact it can be done remotely is just a by product of the system I.e everything can be accessed remotely. At least until I code it so it can’t be . Its definitely a snug fit when the doors shut - so perhaps it is just the seals ‘pushing’ it open Power cut ? . Nothing happens - it doesn’t unlock when power is restored because my code controls the door lock

The door lock supplied is just open then shut . Quick look today and there is a spring ( assume it’s not a cable housing ) that opens the door . I could remove it

Yes . I can use my phone to send the mob round to your house to get your key . ( it’s under the flower pot we all know that )

Yeah . I suppose it should be ‘unlock’ but you need to push it to open - fair point

Guys If you have an intercom and you can ‘buzz’ to open the front door and let someone in that’s a feature you want . If in the above example you wire/code so you can buzz the front door open from the other side of the world that’s up to you ! This isn’t a failing in the door . I’ve simply wired in to allow remote access . The intention was exactly the same as the intercom example . The fact I can do it remotely is a side effect I can code around to prevent accidental opening or if I wish make it deliberately not possible . I just thought it happening would give someone a laugh .

Maybe . I suspect rk doors could supply an automated closer arm at a distressing cost !!

I can well believe that !

Not possible ! Once the door is unlocked it ‘springs’ open

Yeah yeah yeah !! Inadvertently hit the “unlock front door” whilst deploying the latest code . ffs ! Drove to the other side of town to close my own door ffs ! Will add a “yes/no” prompt followed by a 4 digit code to prevent said happening again ffs ! Where’s my wine ?!

Oh contrare Rodders ! I’m scaling those images right down . Also do have a PTZ camera to install . So I can view EVERY detail !!