Search with Wattson
Activity
 
Notifications
Clear all

Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!

CBrenewable
@cbrenewable
Member
Active Member
Joined: Apr 16, 2025
Last seen: Apr 24, 2025
Topics: 1 / Replies: 15
Reply
RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW

@ashp-bobba and @jamespa - thank you both for all your help with this, it's much appreciated. I fully understand it's not easy to see what's going on ...

1 year ago
Reply
RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW

@ashp-bobba - yes that all looks correct. Pump 1 is on the flow and Pump 2 is on the return.

1 year ago
Reply
RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW

@ashp-bobba Thanks. I've checked the arrows and confirm both point in the correct direction. I note your concern over whether both are needed. Assum...

1 year ago
Reply
RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW

@davidnolan22 - Screenshot of energy input/output attached. System was commissioned on 8th April. Note: value for 16th is significantly higher sin...

1 year ago
Reply
RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW

@ashp-bobba - your arrows on the picture are correct. I've followed the pipes just now and confirmed this. How could I check the pumps are insta...

1 year ago
Reply
RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW

@jamespa - Yes, 0.5bar is the max on that bypass valve. Range = 0.1 - 0.5 bar. How would I validate that the pumps aren't fighting each other? T...

1 year ago
Reply
RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW

@ashp-bobba - thanks for the detailed thoughts. I'm aware that my rads upstairs seem to be working well and I have a reasonable density of rads in n...

1 year ago
Reply
RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW

Yes - the return pipe is the one with the filter and is showing in the picture.

1 year ago
Reply
RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW

Additional photos of the system here - you can see how hard it is to follow the pipes (but at least it's a nice compact install like I asked for!)

1 year ago
Reply
RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW

Heat Loss Calcs and a pic of the system included here:

1 year ago
Reply
RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW

@jamespa - yes, looks like I made a mistake on the diagram. I asked for the install to be quite compact in a corner of the garage so it's a little tri...

1 year ago
Reply
RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW

@jamespa - Property is a 1990ish 3 bed 2 story semi-detached house. Fully double glazed. Only about 100mm of loft insulation which I already plan to d...

1 year ago
Page 1 / 2
Share:

Join Us!

Latest Posts

Members Online

Click to access the login or register cheese
x  Powerful Protection for WordPress, from Shield Security PRO
This Site Is Protected By
Shield Security PRO