100% is full data coverage, 0% is no data
| Elec |
| Heat |
| Flow |
| Return |
| Outside |
Information about this system.
| Overview | ||
|---|---|---|
| Location | West Oxfordshire | |
| Installer | Octopus Energy Services | |
| Installer URL | https://octopus.energy/get-a-heat-pump/ | |
| Training | ||
| Heat Geek Mastery | ||
| Ultimate Renewables Pro | ||
| Heating Academy Hydronics | ||
| Learn more | ||
| BetaTalk | 0 | |
| YouTube | ||
| Heat pump | ||
| Heat pump type | Air Source | |
| Heat pump make & model | Daikin Altherma 3 | |
| Heat pump output | 6 kW | |
| Refrigerant | R32 | |
| Heat pump has backup heater installed and in use | ||
| Space heating | ||
| Design flow temperature | 50 °C | |
| Outside design temperature | -2.4 °C | |
| Weather compensation curve | 0 | |
| Space heat control type | Weather compensation with a little room influence | |
| Number of zones | 1 | |
| New radiators | ||
| Old radiators | ||
| Fan coil radiators | ||
| Underfloor heating | ||
| Hydraulic seperation | None | |
| Volumiser | ||
| Hot water | ||
| Hot water method | Cylinder with coil | |
| Cylinder volume | 250 litres | |
| Coil or heat exchanger area | 0 m² | |
| DHW target temperature | 46 °C | |
| DHW control type | Automatic top up of tank if temperature drops by 6-10C | |
| Legionella frequency | Disabled | |
| Misc | ||
| Freeze protection | Anti-freeze valves | |
| Property | ||
| Heat loss at design temperature | 5.6 kW @ -3°C | |
| Property type | Semi-detached | |
| Floor area | 131 m² | |
| Age | 1983 to 2011 | |
| Insulation level | Fully insulated walls, floors and loft | |
| Assessed space heat demand | 9436 kWh/year | |
| Assessed water heat demand | 2881 kWh/year | |
| Generation | ||
| Annual solar PV generation | 0 kWh | |
| Solar PV self consumption | 0 % | |
| Solar PV divert to hot water immersion | ||
| Battery storage capacity | 13 kWh | |
| Metering | ||
| MID Metering | ||
| Electric meter | SDM120 Modbus/MBUS Single Phase (class 1) | |
| Heat meter | Kamstrup heat meter (class 2) | |
| Includes primary circulation pump | ||
| Includes indoor controller or other controls | ||
| Includes indoor temperature sensing | ||
| Data issue flag | ||
| Data issue flag note | ||
| Notes | ||
| Any other notes or comments | Modulation by Madoka thermostat disabled. Overshoot set to 3C to reduce cycling (emitters set to UFH to "unlock" overshoot value). System design temp was 50C @ -2.4C, WDC is now 36C@-2C -> 34C@10C. Home Assistant automations used to reduce hysteresis to ± 0.5C, trigger DHW when tank temperature drops below 35C (in off-peak period or when sufficient home-battery capacity) & more dynamic modulation of the flow temperature based on both outdoor and indoor temperature. System set to "Most Quiet" at all times. |