My dt is set to 5 but is constantly dropping to 2.5 . Is there any problem with the system ?

Why has a heat pump got to have high flow rates? Why not slower flow rates and a wider delta t?

Had a heat pump fitted 3weeks ago house is now cold getting it removed ASAP it's a big con for the Grant money

An incomplete explanation. 1. How is the heat loss from the house calculated? 2.The larger the house the greater the heat loss. The heat loss can only be measured empirically when there is a large difference in external and internal temperature. This would be carried out using an infrared camera. 3. Present your case with a real world example, eg a 150m2 detached residence, calculate the uvalues for the walls and roof. There is a business for an architectural practice to carry out this work. I believe that The University of Salford (or Manchester) have built a full size test lab for this work.

Much better explanation than the Daikin Training course 😊

Just pointing out there is now way the 200mm clearance above the hydro box was met by the installers in your video. 🤓

Installer code: 5678

Don't have a reset button or as an option. Been 5 wks with no heat downstairs but upstairs is fine.

How does the Daikin heatpump maintain a water temperature of over 3 degrees during a holiday mode? The heatpump isn't operational during this time for say 1 month then does the daikin heatpump run as soon as the water temperature goes down?

That’s a bit short on the explanation I was eager to learn how to install this product

If you need a backup heater, You picked the wrong refrigerant. Inverters can throttle from 15% TO 100% The information in this video is false. Design your heat pump system for the coldest days of the year. Eliminate the gas hookup to your house and you will save money every year.

Thanks for this video guys!

Very helpful video! Thank you. If I am using your second scenerio from 19:56. After disconnecting the switch wire (Black). Do I reconnect it at all?

Hello.. i got a question. I got my WD curve type set to slope offset. And i set the setpoint range (min and max temperature)..and after synchronising i dont see setpoint range menu entry anymore and i think there were other menu entries there also that are now missing. How do i get them back?..If somebody knows maybe. Best regards

I disagree with the reasons for not using glycol. I agree it lowers the efficiency of the heat transfer. Glycol is slightly slippery so it will lubricate the pipes and water immersed bearings inside the pump. I would add glycol in a SMALL amount for lubrication purposes only AND add anti freeze valves. Best of heat transfer VS longevity of the system. Anti freeze in an internal combustion engine does two things. It stops the engine furring up and lubricates the pump. If you run the engine without antifreeze the pump will seize eventually never mind damage from freezing. Heat pump engineers are obsessed with efficiency figures over safety of the system. Changing glycol/inhibitor is a schedule service item and should not be avoided.

I’m just getting a heat pump installed and there’s no room to put this panel on the tank, if the panel was located on a bedroom wall, does the display turn off when left unattended?

I've had two quotes for a heat pump. One calculated that I'd need a 12kw and the other a 7kw...

HI I keep getting the 7H-01 error on my Diakin Altherma monoblock. The pressure in the system is at 0,6bar, would increasing the pressure get rid of the problem?

Not the best explanation tbh. Rather than use imaginary lines on graphs, real world examples would carry credibility and be easier for the presenter to use convincingly.Sorry.

Hi. my daikin heatpump is already setup, so guess I have to somehow get back to this stage where you set all the settings. So my question is, how does one navigate to where this video starts if the heatpump has already been setup once?

Minus 10 haha

How do you know if the anti-freeze valves have operated especially if you are away on holiday etc.

The main issue with heat pumps is inflexibility. The system needs to be tailored exactly for the individual house, but then, when you for example get new windows with better insulation, the heat pump effectively becomes 'oversized' for the load. If you decide to stick on a small extension/conservatory etc, suddenly your heat pump can be very much undersized for the load. The issue is, you are not just throwing in a new £1500 Gas boiler to compensate, you are looking at a minimum of £5k to get a new tailored pump. Heat pumps are a 20 year investment, but life changes along the way and the HP system is just a little inflexible, imho.

Superb tutorial thank you 👍🏼👍🏼👍🏼

useless vid … utterly useless

I know I am going to get some push back here but hear me out. In places like Canada it can be -40C for weeks. And as amazing as this technology is getting, at those temperatures you may as well be throwing credit cards into the fireplace for the energy loads. What if we could provide a passive seasonal heat source to work with that is MUCH hotter? You can store a lot of energy in 3 yards of sand at 500F for a very long time. And all of it can come from excess renewable. Think of it as a piggy bank for a dump load, instead exporting to the grid for peanuts.

Is there anything I can do if my heat pump is oversized? We have a atherma 3 daikin 9kw with a heat loss of 5kw at -2? its running about an scop just under 3-1

Back up heater why don’t you Just admit Heat Pumps are not economical,far too many loop holes if if if you don’t do your heat loss if you don’t size it proper if you turn one rad off haha pull the other one.I am on my second one over two years costing a fortune.

My Combi no problem heat pump haha having a laugh why has it so many downfalls Heat Pump versus Combi,am I supposed to rip out all the pipework and radiators when for 10 years no problems nice and toasty.Heat Pump £20 to £25 per day Combi at the most £7.

Great video!! Does this apply to inverter technology compressors with variable speed condenser fans, ECM indoor motors & communicating thermostats? I’v gone to several manufacturers classes and what they teach is that with the configuration I mentioned the equipments will self adjust to the load due to constant communication between the outdoor temp, indoor temp & desired set point. The system has programmed algorithms to compensate. I’m working on units that vary the loads between 15% to 100% load. Perhaps your talking about single stage compressors?

Thanks, this confirms my thinking that undersizing need not be a big problem if heat loss can be reduced further with more insulation in due course - if I’m not mistaken the usual temperature used to calculate heat loss is -3C which happens for maybe a couple of weeks in the year as has happened recently - if that’s true then for the majority of the year the HP would technically be oversized so erring on the side of smaller isn’t as bad as oversizing…

I have alth-2 low temp,the issue is 7H-06 when the machine began to defrost(pump rate is 10L/min).Have no air in the system !

The specific heat is per kg of water. It's only 1 liter at a certain temperature, so the formula should actually be corrected slightly. But water only expand slightly with a degree of Kelvin or Celsius (0.00021).

For 130 m2 how many need power pump in KW?

Hi is there a dimmer on that panel? Mine has gone very dark and can hardly see it. thanks in advance.

Good morning Do you know what these heat pumps will modulate down too? We installed the 9KW version instead of the another daikin 7KW our installer advised us to install due to aesthetics(we liked the look of these ones). Our heat load at -2 is 5KW just wondering if this being oversized would effect its COP?

Hi, you mention not to cover valve body with insulation. I understand the air admittance point but the valve design/construction must be some form of thermo-mechanical device. So what happens if the temperature drops rapidly, the valve starts to dribble but becomes frozen shut or partially open? This is a common problem with condensate outlets for condensiing boilers - little white plastic tube frozen sold with water thgus blocking the outlet for further condensate disposal. Also, what provision should be made for disposing of that ejected water? You dont say what the volume might typically be?

Great help thanks

Hello. Great, informative videos. Is the antifreeze valve recommended for colder climates, as well ? -10C outside temp?

Any chance of a video showing how to clean the magnetic filter in a Daikin all in one unit

🤦 ᑭᖇOᗰOᔕᗰ

Thanks for the tip can you get these at Home Depot? With my air conditioner and my neighbors I had to patiently use tweezers to straighten out the fins. You'll need the patience of a saint but it does get the job done to straighten out those extra bruised fins. It is a handy tool you have there I should check it out thanks I hope that you and everyone else would be a better year I'm staying healthy and safe and with plenty of mental sanity we can use to find some peace.. it's been an impossible few years. The best wishes and thanks Thanks again for showing us this neat wait and straightening the fins out🙂

Looks good, I’m looking forward to my HPIN training course next week 🙂