Optimization of heat pump LWD 70A with photovoltaics

Hello everyone,
I am a layperson and therefore I am looking for your advice.

I have now received a photovoltaic system with 13.9 Kwp and would like to optimize my solar system through settings so that it works more efficiently with the solar system. It is an LWD 70A Alpha Innotec heat pump.

1) Adjust hot water with blocking times, suitable hysteresis and temperatures / differences, switch off the heating rod accordingly.
2) Reduce compressor impulses and optimize heating accordingly.

I would like to start with point 1, as I think this could be easier. Do you have any recommendations?

Thank you very much for your help.

Commissioning heat pump: 3.9.2023 15:

System status:
Heat pump type LD7
Software version V2.88.3
Revision 9717
Control panel 1003
Bivalence stage 1
Operating status ----

System settings:
EVU lock without ZWE
Room station No
Integration return flow
Mixing circuit 1 No
Mixing circuit 2 No
Mixing circuit 3 No
ZWE1 type heating rod
ZWE1 function Hz u.
ZWE1 power 6.0 kW
ZWE2 type No
ZWE2 function No
ZWE3 type No
ZWE3 function No
Malfunction without ZWE
Hot water 1 sensor
Hot water 2 ZIP
Hot water 3 with ZUP
Hot water 4 setpoint
Hot water 5 with HUP
Hot water + heat pump max 0.0 h
Pump optimization Yes
Access KD
Monitoring VD On
Control HK AT-dependent
Control MK1 AT-dependent
Control MK2 AT-dependent
Control MK3 AT-dependent
Heat up with mixing
Electric anode No
Heating limit Yes
Parallel operation No
Remote maintenance No
Pump optimization time 180 min
Efficiency pump Yes
Heat quantity cooling circuit
Solar control temperature difference
Message TDI Yes
Multi storage No
Release ZWE 60 min
Hot water reheating No
Hot water reheating max 5.0
Smart Grid No
Control MK1 fast
Control MK2 fast
Control MK3 fast
Temperatures:

Temperatures:
Return limit 50.0°C
Hysteresis HR 2.0 K
TR increase max 7.0
Release ZWE -2.0°C
Outdoor temp. limit 7.0°C
TDI target temperature 65.0°C

Hysteresis hot water 2.0 K
Outdoor max 40.0°C
Outdoor min -20.0°C
T-LABT end 6.0°C

Reduction down to -20.0°C
Flow max. 70.0°C
T-Diff. On 4.0 K
T-Diff. Off 2.0 K
T-Diff. storage max 70.0°C
TEE heating 2.0 K
TEE hot water 5.0 K
min. AT flow max.
Flow ground floor 62.0°C
Max hot water temperature 65.0°C
Min. return target temperature 15.0°C
Night reduction HK 0.0°C
Heating limit:
Heating limit 17.0°C

Efficiency pump:
Efficiency pump nominal 8.25 V
Efficiency pump min. 8.25 V
Efficiency pump Yes

Heat quantity cooling circuit
Priorities:
Hot water 1
Heating 2

System configuration:
Heating 1
Hot water 1
Swimming pool 0
Heating curves heating 34.0C 20.0C

Operating hours information:
Operating hours VD1 5583h
Compressor impulses 1 18619
Running time avg. VD1 00:17
Operating hours ZWE1 5h
Operating hours heat pump 5583h
Operating hours heating 4738h
Operating hours hot water 845h

Temperature information:
Flow 36.3°C
Return 35.2°C
Return set 15.0°C
Hot gas 40.9°C
Outside temperature 24.0°C
Mean temperature 18.0°C
Hot water actual 48.7°C
Hot water target 48.0°C
Heat source input 26.1°C
Solar collector 5.0°C
Solar storage 150.0°C
External energy source 5.0°C
Flow max. 70.0°C
Intake VD 48.9°C
Intake evaporator 34.6°C
VD heating 60.5°C
Superheating 28.9 K
Superheating target 8.0 K

Yes = Yes

Shutdowns:
03.09.23 14:05 no faults
03.09.23 08:21 no faults
03.09.23 00:50 no faults
02.09.23 18:35 no faults
02.09.23 15:33 no faults

Calibration:
NTC1
0.0
NTC2
0.0
NTC3
0.0
NTC4
0.0
NTC5
0.0
NTC6
0.0
NTC7
0.0
NTC8
0.0

You have to adjust this to your living situation and shower/bathing habits. The goal is to produce hot water when the photovoltaic system is supplying power, i.e., during the day. But how many people get up in the morning at what time, when do they shower and bathe, how often and how long? What rituals are there, if any, in the evening or on weekends?

This leads you to the solution of when and how much hot water you need.

As an example, my own settings (300l storage tank for 4 people, of which 3x per week):
Heating element completely deactivated
Hot water 42°C
Hysteresis 4K
Increased hot water on demand via switch and automatically at high photovoltaic surplus to avoid feed-in throttling 55°C
Hot water lockout from 6 a.m. to 1 p.m.

This results in always having enough shower water in the morning, hot water being prepared from 1 p.m. at the highest sun position, and in exceptional cases, such as large bathing sessions etc., being recharged again in the evening/night if necessary.

Thank you very much for the response.

Also wanted to deactivate the heating element, but don't even know how.

Reduction of the water volume in the hot water storage tank is the most effective.

What is not there does not need to be heated.

300 liters of hot water is too much. I have a 10-family house and installed 500 liters of hot water there. It has never run empty.
And here they want 300 liters for 4 people. I don’t want to start a discussion about whether showering every day is healthy; it is not necessary.

My hot water boiler heats between 10 am and 3 pm with my photovoltaic system if it provides power. However, it is usually fully heated to 70 degrees within about 1 hour. From November to February then via the power grid. 3 people and 80 liters boiler. Has been working for many years.

The insulation of the boiler is so good that our water stays hot from 3 pm in the afternoon until 10 am in the morning. Not 70 degrees anymore then, but still hot.

My heating..

I'm a pro by now.

First, hysteria in the hot water to 6-8 degrees.

Temperature at a maximum of 48 degrees.

Blocking time for hot water until during the day, so the photovoltaic system also has something to contribute when the sun shines.

Circulation pump off or maximum once a day for 15 minutes.

Spread at a heating cycle between flow and return at 6 degrees, but you should only do this in winter.

And don't listen to Buchsbaum, first heating the water to 70 degrees and then cooling it down with cold water is of course efficient for a heat pump... Not.

So for me, the photovoltaic system often delivers the highest power between 10 a.m. and 12 p.m. Sunny in the morning, from noon on cumulus clouds or cloudy. This was actually often the case this summer. What do you want with [Sperrzeiten]? Heat when the sun is shining!

Otherwise, I have a hot water boiler and no heat pump, which I also communicated. I need 1200 kWh of electricity per year including hot water generation with electricity for our not small property. That includes all electricity consumption, such as oven, lighting of outbuildings, heating pump, freezers, etc. That's pretty good, I think.