I will help as much as I can. The water heater is excellent under certain conditions. What do I mean? The chimney pipes are what will allow it to work continuously without shutting off. If you don't do what the manufacturer says, it will shut off and you'll wonder why. The exhaust gases need to be vented properly. The instructions say that ideally you should install a 90-degree elbow and a one-meter pipe. This is perfect and you won't have any issues. If you can't do that, the instructions also say to go up to 2.5 meters high with an elbow, of course, and a T-joint. After you install the chimney, as I said, you adjust the gas low. The logic is simple: You leave a faucet fully open on hot. Ideally, the bathroom one, because that's where it matters most. You go to the water heater and open the little valve you've already installed at the cold water inlet. The water heater starts and begins to raise the temperature. How hot do you want for a bath? 38? 40? degrees. As long as the faucet is running in the bathroom, it raises the temperature. If you have the gas set very low, start increasing it. Conversely, if it's giving too much gas, lower it. So you'll roughly achieve what you want. When you achieve a stable temperature (I mean for 2-3 minutes while experimenting), stop. Obviously, since it's not an inverter, it doesn't automatically adjust to changes in cold water. In winter, when the water is quite cold, you'll need to increase the gas a bit. In summer, you'll lower it a bit. Yes, this may tire you a little, but it's worth it because you have plenty of hot water.

TIPS: Suppose you adjust it this morning in winter with cold water and achieve what you want. In the evening, because the water temperature drops even more, you'll need to increase the gas a bit. Instead, when you go to shower, lower the flow at the shower a bit. Less water will pass through and it will heat it more easily.

Don't generally increase the gas too much because the temperature will get out of hand and it will burn you.

You can mix with cold water in the shower, but as I said, it's not an inverter, so it keeps heating a smaller flow of water with the same flame. As a result, it raises the temperature and, at best, will shut off for protection or burn you, and you'll keep turning it more to cold, so at some point, it will shut off due to low or no flow in the hot.

DO NOT connect it to a solar water heater!!!

LET a plumber do the installation!!!

Install a filter for dirt at the cold water inlet!!!!

If the water temperature rises too much, it shuts off for protection, so keep the gas low and the hot faucet fully open. As I said, if it's lukewarm, then lower the faucet flow a bit.

The pressure it gives you in the shower is extremely satisfactory. 12 lit/min is not little at all.

On a central supply, a 13kg bottle lasted me 2 months (March-May) washing dishes and three people showering. It could have lasted even longer without waste.

The biggest waste of the bottle was in December until I learned to adjust it. 1 bottle of 13kg in one month.

If you have more money, get an inverter. Although I don't own one, it probably saves you from having to adjust it all the time.

Protect it from rain and wind. DO NOT let water get in the chimney!!!! NOR in the water heater!!!

It shuts off by itself WHEN: You don't install the chimney properly, the water temperature gets too high, you try to increase the water flow (from the water heater's flow regulator), and this is probably because it can't handle the network pressure.

In a central installation, at the sink where obviously you don't fully open the faucet for dishes, for example, the temperature will rise quite a bit, so don't let it run for too long.

Frequently, when someone is showering, watch what temperature it shows so you'll understand what you need to do. In general, keep an eye on it!!!

THAT'S ALL!!!