Seeking Service Manual for Termet Ecocondens Gold Plus 25kW, Not User Manual

Hello,

I need a service manual for Termet Ecocondens Gold Plus 25kW.
For the understatement, not the user who is on the manufacturer's website, but the service.

A year ago, when I was looking on the web, I came across the 2016 manual. But I couldn't find the latest manual from Crystal. Due to the fact that the manufacturer "hides" service instructions, I am personally negative about Termet boilers.
You will find the ISU manual:
https://www.elektroda.pl/rtvforum/topic3381796.html#16782312

Thanks, but these are still installation and operating instructions.

Kisses
J.

You asked for an ISU manual and you got one.
The user manual that is publicly available on the Termet websites is IIO.
Some of the data in both instructions is duplicated and this may seem identical, but this is not the case.
ISU is more extensive and it is called service manual.
I do not know that there is a third type of instruction, even if the ISU is sufficient for my needs of an advanced user.

Hello, a bit off the topic, but using the gold plus termet you noticed that the burner does not work "linear", but falls into a sine wave and ranges from min to max power. It can be seen very clearly with the ECO function when the pump reduces efficiency?

James1994 wrote:

using the gold plus termet you noticed that the burner does not work "linearly", but falls into a sine wave and ranges from min to max power.

I assume this is a typo and it was supposed to notice that the burner is not working linearly.
I have an old Vaillant atmospheric boiler and for what, it works in the range of 9.1-14kW with a power change step of about 2kW, because modulation is possible about 9.1-9.5-10.0-12-14kW.
My boiler has this characteristic for the first less than 2 minutes, it works with the minimum power, i.e. 9.1 kW, then it turns on the max, i.e. 14 kW, and so it goes to the max until the temperature on the flow sensor is lower than about 3 degrees than the temperature set on the boiler, because then it starts to modulate, but the momentary power reduction affects the water temperature, so the boiler again gives a higher power, which turns out to be too high, because there is a temperature increase and it lowers again. Only when the supply temperature stabilizes, does the burner run evenly, because with minimum power. After reaching the set temperature, the burner is turned off. My boiler has a fixed speed pump, so only the opening and closing thermostatic heads have an effect on the operation of the boiler and the water temperature. I have 2 radiators without heads, i.e. they are open to the maximum, with maximum flow.

Probably Termet works similarly, because I don't expect any advanced heating algorithm.
If the effect is very visible and it irritates me, I would lower the maximum power, so that the temperature increase was smaller, then there should be less fluctuations in the burner operation.
I also did a series of tests, trials with various room regulators to obtain satisfactory results when using what. Knowing the operating characteristics of your boiler and your installation, it is easier to find the optimal settings, but in my opinion these are always individual settings, because the installations are also different .

My Termet gold plus heats at maximum power from the beginning until the desired supply temperature is obtained, after heating the system up to 50 degrees, for example, it reduces the power to the minimum, after a while it increases the power to the maximum, then again to the minimum, and so on. When the pump is set to 100% efficiency, the supply temperature, despite these fluctuations, does not change and stably sticks to the set 50 degrees. The problem begins when the pump starts to work with lower efficiency (when we increase the difference between the return and the power supply in the thermometer, this is achieved through the ECO parameter), then these fluctuations in the burner power lead to fluctuations in the supply temperature, which leads to overheating of the exchanger, the boiler turns off and the message F1 appears . There is one situation when the burner works stably, namely when the central heating system reaches the desired temperature, e.g. 50 degrees, the burner falls into a power sinusoid, then by hand I slowly lower the supply temperature by a few degrees (2-3 degrees), the burner power stabilizes at e.g. 16% and works so until time until something knocks him out of it, for example, the use of CWU. After switching it on again, it does not return to smooth operation. The service does not know what could be the reason for this (he replaced the motherboard, the fan), so he claims that it is the fault of the installation, which in my case is very simple: 7 oversized radiators and one bathroom ladder, divider, Pex16 for heaters from the stove copper 22. Radiators without heads thermostatic.
Maybe someone had a similar case, maybe he uses gold and he is fine, or maybe he did not pay attention to it.

James1994 wrote:

from the beginning, it heats at maximum power until the desired flow temperature is reached

as I remember, in the service settings there was an option to set the intermediate power for some seconds after the burner started and only then the boiler switched to max, so you can change it. I just don't remember if it was in Gold or Silver but I used to analyze the options in the service menu.

James1994 wrote:

after reheating the system, which, for example, to 50 degrees, reduces the power to the minimum, after a while it increases the power to the maximum, then again to the minimum, and so on.

I already know that I will not buy Termet 100%. I saw the Junkers Compact ZWB24-1 DE in action and at the beginning it gave the burner the set temperature, the burner runs smoothly and gently, so there are no jumps you describe.
Unless it's not the problem of the boiler, but some other settings.
If I were you, I would try to turn the maximum power c, until optimal results are achieved in terms of burner operation and gas consumption.
The installations are different - they allow for almost continuous operation of the burner, while others force the boiler timing, i.e. cyclic switching on and off of the burner, and this may also be related to this.

In gold, you can also set the starting power, I like this boiler, it has a lot of settings that can be adjusted with the installation and as it works stably, it looks very nice, it only looks in my case, but ... with which the service does not can cope

James1994 wrote:

also the take-off power can be set

I have a starting power = minimum power in my boiler and the boiler always works at the beginning after firing the burner with minimum power for less than 2 minutes
In Gold you set the take-off power separately and, more importantly, in a separate parameter you can set the work time on the take-off power in the range of 2-30 seconds.
Additionally, you can set the power limitation in the range of 0-25% (default value 10) and its duration in the range of 0-5 minutes (default time 0).

In other words, in my opinion, you can set the start power for a maximum of 30 seconds, and then for a maximum of 5 minutes you can limit the power for heating water and only then the boiler will start to work at maximum power, i.e. you have a direct impact on the first 5.5 minutes of boiler operation.
How it works in practice, I do not know, because these are my conclusions from the manual itself, and the practice may be a bit different.

My gold plus 25 works only on the external sensor (on the heating curve 2) in continuous motion consumes about 0.3m / h Gz-2E, i.e. on the minimum modulation (1m = 11KWh, i.e. 03 = 3.66KWh). fired-set the fumes-was surprised that without an internal sensor and went) the boiler heats, but so on the advice of the BUKS column, I set P24-overrun time on the starting power-2s. p16-working time at max power-4min. and P16-P17 dependent power limit at 0 (ie min power) This caused temperature stability and I don't see nasty L3.