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william1066
@william1066
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Joined: Jan 5, 2023
Last seen: Feb 13, 2024
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Topics: 0 / Replies: 206
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RE: 17kw Grant Aerona heat pump not performing

The higher temp should allow for a higher dT [hence lower flow rate], assuming no changes to the emitters.

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 17kw Grant Aerona heat pump not performing

I have no cycling when I use sensible settings. I had been playing around with lowering the flow temp at night, but I have too much thermal mass in t...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 17kw Grant Aerona heat pump not performing

Afaik, you need to target a flow velocity of 0.8 to 1.2 m/s to avoid too much noise, wear and tear on the pipes etc. That is probably what the heatin...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Keystone COPs? I'm not getting the efficiencies I expected on my Ecodan.

Interesting, do you have more than one temperature sensor input into the solar thermal controller? My temperature sensor is in the bottom 1/4 of the...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Keystone COPs? I'm not getting the efficiencies I expected on my Ecodan.

This is the age old accuracy vs precision

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: New Samsung ASHP

From what I can see in the modbus manual, it says that the hydro HT does not support cooling mode. I am not sure if this is referring to the one you ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Samsung ASHP scheduling help

My understanding is that you only get access "out the box" after installing the modbus interface module to the registers in table 2 in the manual (sta...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Samsung ASHP scheduling help

@redzer_irl I am in the process of putting my config and the process into github, but that requires some sanitising the config. You need to "progr...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Connecting to Midea MSmartHome using a PC

Given you had one failure on that disk [which I assume is a new disk], without really knowing the cause. I would get a USB to SATA connector (for you...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Flexible Octopus Economy 7

@mjr mine are as below

2 years ago
Forum
Electricity, Tariffs, Monitoring & Providers
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RE: Flexible Octopus Economy 7

I am on Economy 7 with a smart meter, and with Octopus. The day rate is "eye watering" though as it seems that Economy 7 has slipped through the crac...

2 years ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Heat pump delta T too low - 2c

I have been wondering about this piece. My view is that from an efficiency point of view it should be marginal, at least at the high end of the outpu...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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