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Derek M
@derek-m
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Joined: Mar 4, 2021
Last seen: Sep 19, 2024
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Topics: 7 / Replies: 4403
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RE: Grant 13kW Aerona3 - issues getting zones to temp

It bodes the question "if 600mm high radiators will not fit, why were they specified"? Will 400mm high radiators fit?

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

Unless you instigated the changes, I would certainly question why the originally specified radiators were changed to the ones actually installed.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

@crimson According to the heat loss calculations the design called for two K2 600mm x 1400mm radiators in both Living Room 1 and Living Room 2. Each...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Local monitoring and control of inverter - gaps in understanding

As I have often told young Engineers, "If all else fails, read the instructions".

3 years ago
Forum
Solar Photovoltaic (PV)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

@crimson Please feel free to DM if you wish.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

@crimson The other important aspect to confirm is that the total capacity of the heat emitters is capable of emitting 7.86kW of thermal energy with ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

From the information just provided, I suspect a 10kW heat pump would have been more than adequate. As @heacol has indicated it will be impossible to...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

I would suggest that you start by reducing the frequency of cycling, by trying to balance the flow rate through the LLH. I suspect it will be necessar...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

Try tapping the side of the valve and/or pulling the stem up.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

@crimson The valve stem should be up to open and down to close. For living areas it may be best to remove the actuator and leave the valve fully ope...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

@crimson Try removing the TRV heads and check that the valve stems move freely, and by approximately the same amount of travel. With regard to the...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

If you read back in the thread I did suggest changing the LLH into a small volumiser rather than fully removing, but maybe something to consider once ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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