Controllers for pumps
I have 2 pumps and 2 controllers, as well as a hive thermostat setup.
Now that I've read the more in depth chofu manual I want to adjust some settings directly on the controller for tweaking the efficiency.
My question is do the settings have to be exactly the same on both controllers for heat pump 1 and 2?
Will this override my hive thermostat if I say turn off the dhw setting on thermostat and as someone else suggested turning up the heat demand on the hive to 30?
2 10kw Grant Aerona3
Heat loss calc 16.5 kw @ -2.8 degrees
4.32 PV
Just had an answer from installer one controller is for heat only one is for hot water and heat so will try and program each accordingly and see what happens!
2 10kw Grant Aerona3
Heat loss calc 16.5 kw @ -2.8 degrees
4.32 PV
Does the Hive also control and program your DHW? My installer fitted a Grant time clock for that. My Hive room thermostat is only for heating.
The Hive thermostat is best not controlling anything heating related. It has too small a hysteresis to be of any use controlling ASHPs. It cycles the unit compressor on and off too frequently. Just use it as a central monitor or for remote monitoring via the app, and have it set at a temperature to continually demand heating perhaps set to avoid overheating, same with any TRVs.
I've set my DHW to charge a noon each day for an hour. That's when I get most solar PV generation to offset the ASHP power demand, and the day time temperature is warmest for lowest CoP when the ASHP is providing water at +55degC.
@allyfish it does, but I'm going to have a go at programming the controller directly and turning off the hive control program 🤞
I did try heating the cylinder on the immersion timer on cheaper overnight tariff to 60 for legionella protection but then found we had less hot water in the morning, probably because I turned the program off at the hive...
We don't have mobile control from a hive hub as the installers were hesitant as said residents would be too tempted to control temps and hot water cycling the system too much.
Kind of wishing the hive control wasn't installed since growing confidence with how to use thanks to yourself and others and as a sidenote finding even the default WC saving more substantial kw per day albeit being a bit milder weather.
2 10kw Grant Aerona3
Heat loss calc 16.5 kw @ -2.8 degrees
4.32 PV
- 26 Forums
- 2,113 Topics
- 46.4 K Posts
- 90 Online
- 3,410 Members
Join Us!
Latest Posts
-
RE: Say hello and introduce yourself
Hi @seatonian - Yes, I know Seaton, and I have the Nat...
By Transparent , 5 hours ago
-
RE: Buffers, hot water and cooling
The principal reason that heat pumps have minimum flow ...
By JamesPa , 6 hours ago
-
@seatonian got your email. Will connect you with a reco...
By Mars , 18 hours ago
-
RE: Wood burner with ASHP - direct air?
I love the new fully Viking look... best personal avata...
By Mars , 1 day ago
-
RE: No-code, plug-and-play monitoring for your heat pump
I think I have found “The One!” Waveshare ESP32-S3-POE-...
By Grantmethestrength , 2 days ago
-
@downfield and @toddles, this isn’t in the settings cur...
By Mars , 3 days ago
-
RE: Homely launched for Grant Aerona ASHP control
I haven't bought the Aerona Smart Controller (£700!) bu...
By Prunus , 3 days ago
-
RE: Antifreeze top up for my heat pump - is this a rip off?
For the record, Grant supply ethylene glycol for their ...
By Prunus , 3 days ago
-
RE: Compressor attempts start but fails - Nibe Fighter 2005 8kW
@skyefarmer amazing. Well done!
By Mars , 3 days ago
-
RE: Air source heat pump roll call – what heat pump brand and model do you have?
Ebac 5kw - Monobloc R32. Developed and made in UK - Mit...
By marcinwloch69@gmail.com , 5 days ago
-
RE: Is a Valliant Inline 6kW heater a BUS buster?
Just another thought - it might be worth thinking about...
By JamesPa , 5 days ago
-
RE: BUS Grant: removal of all other fossil fuel heat sources
@rikiarn - just have a think as to how much it will cos...
By Transparent , 6 days ago
-
Don't do much digging around.That's best left to the pr...
By Transparent , 6 days ago
-
Hi all, I was wondering if anyone had an idea of how th...
By Wh0am3ye , 6 days ago
-
RE: EBAC re-entering the ASHP market in 2023
@toodles confirm i have Ebac 5kw ASAP + homely and it w...
By marcinwloch69@gmail.com , 6 days ago
-
RE: Compute heat loss from energy used
@jamespa Ebac must be similar to Mitsubishi as they buy...
By marcinwloch69@gmail.com , 6 days ago
-
@pie_eater I have been thinking of adding cooling to my...
By TechnoGeek , 1 week ago
-
RE: Victorian Semi Retrofit / Extension ASHP and UFH Advice
Agree, but you may have a hard time convincing them, as...
By JamesPa , 1 week ago
-
RE: Seal the Deal: Don't Let Your Heat Pump Leak Energy
Hi - fyi - there's a dead image link in the 'Optimal In...
By seatonian , 1 week ago
-
RE: Ripped Off: How UK Homeowners Are Paying Gas Prices for Wind Energy
@chandykris Horses and beggars…. 😉 Toodles.
By Toodles , 1 week ago