Self Install of 7kW aroTHERM plus Heat Pump. E8.
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- Опубликовано: 2 окт 2024
- A more detailed overview of the install to date,.... delayed by the start of the Euros. System is holding pressure and waiting for the external unit to be installed. Episode 8.
Well done. I'm seriously impressed. Are you following an official valiant instruction plan? How much money are you saving by installing it yourself? Don't you need to be certified to do this? Also, will you have to notify the gas company to officially cap the gas connection?
I do have vaillant schematics for the system, although it is quite high level, it involves a lot of head scratching. Saving the full installation cost, which I guess it in the region of ~£5K. The only gas we have is bottles/cylinders of propane for the hob and that is remaining in place. The boiler I had was oil fired. I'm an electrical engineer, but I will get the ultimate connections to the fuseboard check by a qualified sparkie.
I am currently doing a self installation of valliant arotherm 7kw. I have tested it on the hot water tank and all ok so will move onto removing the combi boiler. Is yiu outside isolation point outside the protected zone. Keep up the good work
Thanks for the comment Derek, the isolator is about 1m from the centre line, so is on the edge of the zone. The diagrams are a bit ambiguous, I used dim A (2.1m) about the centre. Did you change the water tank or are you running with the original, as I am doing initially (until I discover the coil is not big enough)?
@UFZ7482 I am using a previous installed mixergy tank. I have just completed thd install now as thd 35mm pipework needed a press tool , soldering 35mm i found difficult. Just over 1 hour to heat the tank from cold 250l so just over 8kw input. Cop 2.6
@@derekpaisley620 what is your starting temp, 15C? and what is your final temp in the tank?
@@UFZ7482 start was 27 deg to 56 deg. I have just completed another run in eco mode. 32 to 55 in 1 hour 45. Cop 4.6
amazing
Thanks
Good progress! I would want the gas bottle disconnected and moved out of the way during the lifting process, just in case it all goes wrong! Have you considered using a Genie Lift?
Hello Glyn, thanks for the comment,.... yes i am waiting on delivery of a 1m propane pigtail to get the cylinder outside the scaffold tower structure. I plan to lift the unit 0.5m at a time, then place the scaffold boards under, so it's never more than 0.5m from a solid base. I didn't consider the genie,... well maybe look again, thanks for the suggestion.
Not sure those returns are correct
Why not share what you think instead of "I know something you don't"
@@TheFredbackLoop been a heating engineer for 20 years and I have never seen returns connected together like that the hot water circuit should connect directly to one port and heating circuit to the other. Probably would work but it’s not right
@@TheFredbackLoop elearning.vaillant.com/vrc700/ci/en/documents/uk/infopool/System_diagrams.pdf
Here is the link to the pipe schematics. Its not pipped correctly
@@TheFredbackLoop elearning.vaillant.com/vrc700/ci/en/documents/uk/infopool/System_diagrams.pdf
Here is the link to the pipe schematics. Its not pipped correctly
My DHW and zone 2 (upstairs) share a common return. The zone 1 (downstairs) is also commoned with the Z2 return. The 3 flows are separate. In an ideal world I would rectify this but that is the way is it for now. I do know that I have a bit of spurious circulation on a couple of upstairs rads when the Z2 valve is closed (so Z2 supposedly off) and the tank is being heated (DHW on). Thanks for the heads-up.
flow meter on the return , temperature sensor on the flow maybe expected by default settings.... you can probably change it in the settings
Yes I hope so,.... i did read somewhere meter on the flow,....oh, you'll see at time 0.25 there is a sticker on the flow meter and it is to be installed on the flow.
Heatmeter bodys can be fitted on either flow or return, historically the meter body was usually fitted on Return to avoid high temperatures, this is not an issue with heat pumps. Ultrasonic heatmeters like this Kamstrup work best with the body fitted on the flow, this is how they are configured by default. But this can be changed in config settings if needed:, see:ruclips.net/video/t2lBcXVAEGk/видео.htmlsi=CzasLKU-5_4P5t6B
@@GlynHudson Thanks . Just one thing , I was helping some local installers with OEM shop kit and noticed included instructions to put flow meter on flow but the meter was actual setup the other way around resulting in negative flow reading . Sontex 789 was set to "Coldpipe" . Its just FYI .
@@gopikrishnayogarajah sorry for confusion, Sontex superstatic meters work best on return,but can be configured for either. Going forward we're standardising on ultrasonic meters which will be configured for the flow..