which air source heat pump

[dfaz]

Hi Guys
I'm pretty new to air source so looking for some advice on selection.I have an 800 litre buffertank with seperate hw production all heating apart from towell rads is under floor heating load is 14kw,this is backed up with a large solar array up to 14kw max output, initial calculations were designed around 30% of the heating to come from the solar.what I need is an air source unit without a seperate heat exchange box internally as im not able to work with refrigerants and space internally is at a premium,ease of installation,simple controls and all year round efficiency are on the wish list.
any information advice, or recomendations appreciated.
Thanks in advance
Dave.

 

[Biggles..]

The only unit not to use fridge pipe work and have an internal unit is the Sanyo CO2 ECO.

roll on the arguements.

 

[Corgigrouch]

No argument here... Sanyo is a good piece of kit

 

[dfaz]

unfortunately the sanyo co2 unit is matched to its own store and not suitable for the large store I am using.

 

[Biggles..]

No it's not,it can be fitted to any thermal store,buffer,load levelling cylinder you like.
There's a seperate electrical interface unit available that means it doesn't have to be the acv tank in tank store.
I'll get you the part number.

As for the units,they can match any load simply by cascading them together.

You'd need a 9kw and a 4.5

 

[dfaz]

Thats interesting I did an course on these,obviously things have moved on since then, i'll make some enquiries tommorow.any more suggestions welcome and thanks for the help so far.Just a note 240v single phase only.

Dave.

 

[Biggles..]

Acc co2 control kit.

Other than the sanyo , the only other ones to look at are nibe and altherma.

 

[dfaz]

i've been very disappointed with nibe,for reasons I wont go into.does the altherma connect straight to a buffer tank or to a heat exchange unit?

 

[Biggles..]

EXchanger.

The 3 I listed are the only products I'd look at.the sanyo is actually the only one that fits your brief.