Prepping for the installation of a new heat pump at home in the next week or so, but not exactly thrilled about the imminent entropy surge
So it begins..
The external unit and the internal hydro box are now mounted and the refrigerant lines are pressurized with Nitrogen for a 24h leak test
Progress on the collector box and mixing pump. It allows fixing the max fluid temperature, regardless of what temperature of the buffer tank is. The buffer tank (200l stainless) can be heated in three ways – excess PV heat rod, heat pump, fireplace on wood via a heat exchanger.
The custom built 300l stainless steel domestic hot water tank arrived. Hot water will be heated by the heat pump (to 55*C) or using PV excess+heating rod (to 70*C)
Some more progress today, hopefully teat-run late tomorrow.
The combined 500l volume of the buffer and domestic hot water tanks serves as a thermal accumulator, storing roughly 20kWh of energy. This energy can be generated during low tariff periods and utilized later.
Up and running in cooling mode 🙂
Connected and configured an energy meter that provides 1000 imp/kWh readings. The Ecodan already has a pretty good inbuilt produced heat/cooling/DHW estimation based in flow rate and temperature delta, so COP measurement is now available.
Added a “MelCloud” controller to the system, the app is quite frankly crap. But it integrates with home assistant, and that’s all I want.
Added flow temperatures, outside temperature, power consumption and compressor running frequency to home assistant. Will add calculated COP/EER soon
