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Dear Granpal users. I have some questions regarding the use of oats instead of pellets. I have a Granpal 15 kw boiler and I used it for 8 years without major issues so far. Considering the price of pellets these days I want to try burning oats, as many of you already did. But, in the menu of the controller there is no clear indication of fuel type. There is only Fuel 1, Fuel 2, Fuel 3, Fuel 4. Which one is supposed to be dedicated for burning oats? What other tips do you have for burning oats? Please feel free to write any information you might find important. Thank you!
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Thanks again! I will give it a try!
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Tomasz, Electrician and forum colleagues, Thank you for your efforts and involvement! I really appreciate your advices, as you are the only ones that can really help me. I tried the settings suggested by Tomasz and everything went well. The boiler started OK, with automatic ignition, no explosion and no problem. I haven't put the spirals back into their place yet... Until now I had set fuel to "fuel 1", I thought that this would be normally pellets. The problem is that in the English version of the instruction manual, this is not clear at all. It says pellets, fuel 2 and fuel 3. In my menu it is not specified pellets, only fuel1, fuel2, fuel3, so I assumed that fuel1 is pellets. In this case what is fuel 1, then? Anyway, I have another problem now, the feeder temperature is very high, going to 80-85 degrees, when the boiler is in stand by mode. What settings should I change, in order to have a normal feeder temperature? Thank You.
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OK, I 've done it again! It exploded again today! Because I have a lot of tarry all over the boiler, I stopped it after 1 month. I have burned exactly 25 bags of pellets, which is not bad for an entire month, I guess... Because the 3 way mixer does not work as it should, I stopped the boiler to clean it up, because I have a lot of tarry because it condensates, because the return temperature is 35-36 degrees, when boiler has ~70 degrees. Meanwhile, I made the chimney higher with 50 cm, because I suspected it doesn't draw well. Now, it is much better, I tested it and it is a clear difference. Anyway, after I cleaned the boiler, I also cleaned the spirals from the heat exchanger. I removed the spirals and I didn't used them until now, because last time when I used them, when I turned on the boiler, after 2-3 minutes of ignition I had a little explosion and the interior chimney just got out of place. After I removed the spirals, the boiler started without problems. Today, after I saw that the chimney draws better than before, I decided to put the spirals back into place. Well, after 3-4 minutes after ignition started, I had a big explosion. The upper door got out of place, the locker is broken and the door hit the wall and deteriorated the automation from under floor heating, which is quite close. I was lucky I wasn't near the boiler at the time. I know it is the gas from the pellets, but why it explodes? Why it does not go out the chimney? So I am asking you please help me understand what could be the problem. Is it something about ignition time, amount of air (fan power) maybe? What settings do you have for ignition? I appreciate any kind of ideas. Thank you.
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Hi Tomek, Thanks for your long and useful reply. I have the English version of the manual and to be honest I find it really hard to follow and I think that it is much shorter than the Polish one, so I am assuming it contains less information. I red it anyway. On the other hand, I don't know very much about boilers and installations. First, I want to say that yesterday I removed the control panel's cover to check the connections there and I seemed to see some wires which were not very tight in place, anyway I have tighten them up and after that I put everything in place again. Then I started the boiler and surprise, the igniter worked! About the room regulator. The under floor heating has its own automation, which controls the actuators for each heating circuit - on the first floor I have 8 circuits and 5 room regulators which control 5 different zones. (1 for bathroom, 1 for living, 1 for the kitchen, 1 for the entry hall and 1 for the bedroom). When the set temperature is reached on any of the room regulators, the automation is closing the actuator(s) for the corresponding zone, so the circuit(s) of that zone are closed. Most of the time, the circuits close all at the same time, and open all at the same time, because I set the temperature 22 degrees on all 5 room regulators. Now, when all circuits are closed, the automation does not stop the boiler, but the boiler grows its temperature really fast up to 72 ˚C and it stops. So, after one day the house entered in some kind of "thermic balance" so, the boiler is working for 30-40 minutes and then stops and it stays for ~2 hours until it reaches 58 ˚C and so on. In this aspect I am pretty happy with it, because the pellet consumption is very small. The curve is now set on 0.6, because I see that this is the middle curve for under floor heating (0.4 - 0.8 ). What does "Shift" refers to? What is it for? The last question (cause it is late now) I understand that when mixer is opening, it should be "01" on the display, but it is always 00. What could be the reason? I will ask some more questions tomorrow. Thank you.
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@electrician, thanks anyway. At least concerning the common things please let me know: -the room regulator (regulator pokojowy) how does it work with the boiler? When the set temperature is reached, the regulator stops the boiler, or not ? (it is slowing it down, or stops it) -the three way mixer is supposed to open when heating water reaches a certain temperature? Where can I set the temperature or anything else related to this three way mixer in the menu? Thanks.
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Some pictures with the installation, maybe you see something...
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Witam użytkowników Granpal i wszystkiego najlepszego dla was wszystkich w tym nowym roku! Przychodzę do Ciebie do rad dotyczących mojego Granpal 15 kW, że niedawno zainstalowany. Dziś mam tydzień od kiedy zacząłem kocioł, i mam już wiele historii do opowiedzenia. Kiedy zaczynałem wszystko kocioł był gładki i miły, ale po 20 minutach komin wnętrze (stal nierdzewna) eksplodował i oba drzwi kotła zostały uszkodzone, z szafki złamane! Drzwi palnika (dolna) prawie złamał nogi w instalatorze jest. Cóż, po tym jak były na tyle odważny, aby zbliżyć się do kotła ponownie, spawane szafki drzwi w miejscu i wymieniłem wnętrze komina. Po tym, usunąłem czapkę kominową (na górze) i po poradę w instalator, w spirale I usuwane z komory wymiennika ciepła. Kocioł zaczął normalnie i to działało na jeden dzień. Po jednym dniu, spirale i włożona z powrotem do komory wymiennika ciepła i próbowałem włączyć kotła. Dużo dymu wyszedł z kotła z przodu, z tyłu, z wszędzie! Odwróciłam ją i ponownie usunąć spirale. Odwróciłem go ponownie i pracował nieprzerwanie, aż wczoraj rano. Niektóre problemy miałem jeszcze w tym tygodniu: Potrójny mikser wydaje się nie działać, nie wiem dlaczego, zawsze zamknięte (wygląda na to, zamknięte), ale w rzeczywistości jest otwarta, ponieważ woda grzewcza wchodzi do ogrzewania podłogowego i zwrotów w kotle, bez problemów . Model miksera jest taka: http://www.vexve.com/en/controls/pro...es/vexve-amv3/ Ponadto, czujnik pogoda nie działa, kocioł pokazuje temperatury zewnętrznej 95 stopni C!. Zamówiłem właściwego jedną z Estyma, ale żyję w Transylwanii, to będzie tutaj tylko jutro. Kocioł pracuje w sposób ciągły przez cały czas tak Kiedy osiągnięto 72 ° C jest ona zatrzymana na godzinę, niż wtedy, gdy temperatura spadła do 59 ° C rozpoczyna się znowu, pracuje na godzinę i tak dalej. Dom ma około 150 metrów kwadratowych, a to było bardzo gorąco w środku, około 26 ° C (dla mojej żony to było OK, dla mnie nie) I nie zainstalowany automatyzację z ogrzewaniem podłogowym i jeszcze niech ciepło do ogrzania domu, bez kontroli na nim. Wczoraj rano (to jest tylko moja wina) znalazłem dużo dymu w kotłowni oraz w domu. Pastylki gotowy i kocioł nadal działa! Przestałem go natychmiast, a kiedy otworzył zbiornik, dużo dymu wyszedł stamtąd. Po napełnieniu zbiornik na pelety włączyłem kocioł ponownie. Ale niestety, nie zapalają granulki! Wszystko wydaje się być w porządku, ale nie ma ognia! Wszedłem w menu i testowałem zapalnika i DZIAŁA! Ogrzewa się granulek, aż dym wychodzi z nich, ale w trybie testowym po 1 minucie zatrzymuje. Jednak gdy próbowałem włączyć kotła normalnie, nie działa zapalnik ... I niech to 40 minut i nic się nie stało. Co może być uszkodzony? Zapalnik działa w trybie testowym, ale nie uruchamia się w trybie normalnym, ognia! W każdym razie, spalone kilka granulek ręcznie i kocioł zaczął działać, ale tylko wtedy, gdy robię ogień ręcznie ... Wczoraj również połączenie z kotła "reg. POK" do automatyzacji z ogrzewaniem podłogowym, ale kocioł działa dziwnie. Temperatura podnosi się bardzo, bardzo powoli, kocioł utrzymuje moc w 20% przez cały czas, nie wiem, dlaczego ... W każdym razie dom jest ogrzewany, nie ma problemu. Jak kotła regulator pokojowy z pracy? Gdy temperatura ustawiona na nim zostanie osiągnięty, nakazuje do kotła, aby całkowicie zatrzymać, lub jest po prostu zmniejszenie mocy kotła? Ponadto, dym wciąż pochodzi ze zbiornika, czuję dym cały czas, co nie jest bardzo przyjemne. Zakładam, że coś jest podzielony pomiędzy komorą palnika i kosza, co dokładnie może być? Jak mogę wymienić? Dlaczego zapalnik nie działa w trybie normalnym, gdy próbuję włączyć kotła? Prosimy zwrócić się do każdego rodzaju pytania! Jestem bardzo zaniepokojony sytuacją, a ja naprawdę potrzebuję twojej pomocy! Przepraszam za długą wiadomość i angielskim. Poniżej umieściłem wersję Google Translate Dziękuję za wszelkie odpowiedzi.
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Hello Granpal users and all the best for you in this new year! I come to you for advices regarding my Granpal 15 Kw, that I have recently installed. Today I have a week since I started the boiler, and I already have a lot of stories to tell. When I first started the boiler everything was smooth and nice, but after 20 minutes the interior chimney (stainless steel) exploded and both doors of the boiler were damaged, with the lockers broken! The burner door (the lower one) almost broke the instalator's feet. Well, after we were courageous enough to come close to the boiler again, I welded the door's lockers in place and replaced the interior chimney. After that, I removed the chimney hat (on the top) and following the instalator's advice, I removed the spirals from the heat exchanger chamber. The boiler started normally and it worked for one day. After one day, I insert the spirals back into the heat exchanger chamber and I tried to start it. A lot of smoke got out from the boiler at the front, at the back, from everywhere! I turned it off and remove the spirals again. I turned it on, again and it worked continuously until yesterday morning. Some problems I still had during this week: The three way mixer seems to not work, I don't know why, it is always closed (it looks like closed), but actually it is open, because the heating water is going into my underfloor heating and returns in the boiler, without problems. The model of the mixer is this one: http://www.vexve.com/en/controls/products/mixing-valves/vexve-amv3/ Also, the weather sensor is not working also, the boiler shows exterior temperature +95 degrees C!. I ordered a proper one from Estyma, but, as I am living in Transylvania, it will be here only tomorrow. The boiler was working continuously all this time like this: When it reached 72 C it stopped for an hour, than when temperature decreased to 59 C it starts again, worked for an hour and so on. The house has approximately 150 square meters and it was very hot inside, approximately 26 C. (for my wife it was OK, for me not ) I did not installed the automation from underfloor heating yet and I let the heat to warm up the house, without much control on it. Yesterday morning ( it is my fault only) I found a lot of smoke in the boiler room and in the house. The pellets were over and the boiler was still working! I stopped it immediately and when I opened the hopper, a lot of smoke got out from there. After filling the hopper with pellets I started the boiler again. But unfortunately, the pellets do not ignite! Everything seem to be OK, but no fire! I entered in the menu and test the igniter and IT WORKS! It is heating the pellets, until smoke is getting from them, but in test mode after 1 minute it stops. However when I try to start the boiler normally, the igniter does not work... I let it 40 minutes and nothing happened. What could be broken? The igniter works in test mode, but does not start fire in normal mode! Anyway, I burned some pellets manually and the boiler started to work, but only if I make the fire manually... Yesterday, I also made the connection from the boiler "reg. pok" to the automation from underfloor heating, but the boiler is acting strange. The temperature is raising very, very slow, the boiler keeps the power at 20 % all the time, I don't know why... Anyway the house is heating anyway. How is working the boiler with regulator pokojowy? When the temperature set on it is reached, it gives order to the boiler to stop completely, or it is just reducing boiler's power? Also, smoke it is still coming from the hopper, I feel smoke all the time, which is not very pleasant. I assume something is broken between the burner chamber and the hopper, what exactly could be? How can I replace it? Why the igniter doesn't work in normal mode when I try to start the boiler? Please feel free to ask any kind of question! I am very concerned about the situation, and I really need your help! Sorry for the long message and English. Below I will put a Google translate version Thank you for any answer.
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I confirm - granpal is the best boiler for any grain - rye, wheat, corn etc and bean or pea too. Best burned oat and pellet. IMHO granpal 20 kW will be better than 15 kW - Cluj Napoca that is Transilvania and hard winter Regards Granpal forever! I am really sorry to respond so late, but I wasn't notified in my email that someone responded to my message. Thank you both for your effort of giving me an answer. I want to buy this boiler soon, I was wondering if there is a water tank included in the boiler, how many liters has this tank. @Ewajacek, I understand that for 176 sqm you use the 15 kw boiler, right? The winter in Transilvania (at least in Cluj Napoca) shouldn't be harder than in Poland I guess, because you are located north to Transilvania… Anyway, these days cold weather is not the problem, but heat:D
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Hello everybody ! I need your advice regarding Granpal boilers. I have got aprox. 160 sqm to heat up, and also I need hot water for washing etc. I think I will be fine with the 20 KW type, but after going through 20 pages of this thread, I cannot say that I understood much and google translate is hillarious. So, I am asking you because Granpal is Polish made and I am assuming most of the buyers and users are Polish also... So, Granpal users, please tell me if my decision of buying a Granpal boiler is right and I would like to know, based on your experience, what is the error ratio of this boiler, known problems, consumption, efficiency, mentenance, every detail that you think is important. Also, I wanted to ask if in the case of this boilers the existence of chimney is absolutely compulsory. I am asking this because lately I see a lot of boilers don't need a chimney, but a very simple expandable stainless steel "pipe", altough it might be a legislation difference between Poland and Romania in this matter. I also saw that this boilers are working with oat (owsa). Please tell me what is the eficiency of the boiler using oats and if there are other grains that this boiler is working with (corn, wheat etc). I did read the tehnical data sheet of Granpal boilers, but users experiences are best for having an objective picture about it. I also understood that someone from the forum had a bad experience with smoke from the boiler, is it a regular problem, or not? Waiting for your replies, Thank You
