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@ -99,7 +99,6 @@ You may prefer to solder the wires over using connectors. But in this case, it w
{-Photo: T sensors with abbreviations and full names-}<br> {-Photo: T sensors with abbreviations and full names-}<br>
{-Photo: RS485 and 12V power for display-}<br> {-Photo: RS485 and 12V power for display-}<br>
{-Photo: all together-}<br> {-Photo: all together-}<br>
{-Photo: ? a crankcase heater looks like ? -}<br>
## Starting up the heat pump system for the first time and charging refrigerant ## Starting up the heat pump system for the first time and charging refrigerant
This is not a hard part, but if you don't have experience it will take time. <br> This is not a hard part, but if you don't have experience it will take time. <br>
@ -119,14 +118,19 @@ Let's say you don't know how to calculate the amount of refrigerant in a newly b
This algo is good and safe both the first time and as a starting point. As you gain experience, you will get yours much easier and faster. {-Also try "manual EEV mode" during charging process.-} This algo is good and safe both the first time and as a starting point. As you gain experience, you will get yours much easier and faster. {-Also try "manual EEV mode" during charging process.-}
{-?manifold photos with comments?-} {-?manifold photos with comments?-}
## Control and usage: remote control unit ## Control and usage: remote control display
{-There are 2 ways to control heat pump-} {-There are 2 ways to control heat pump-}
{-connection-}
qwer qwer
## Control and usage: serial console ## Control and usage: serial console
{-desc 2-} {-desc 2-}
qwer qwer
## Control and usage: diagnostic display
{-desc 2-}
link
## Diagnostic and status messages ## Diagnostic and status messages
**LastStopCause messages. Why system was stopped** **LastStopCause messages. Why system was stopped**
| Message | description | | Message | description |
@ -317,10 +321,6 @@ Last option
#define MAX_SEQUENTIAL_ERRORS 15 //max cycles to wait auto-clean error, ex: T sensor appears, stop compressor after counter exceeded (millis_cycle * MAX_SEQUENTIAL_ERRORS) #define MAX_SEQUENTIAL_ERRORS 15 //max cycles to wait auto-clean error, ex: T sensor appears, stop compressor after counter exceeded (millis_cycle * MAX_SEQUENTIAL_ERRORS)
``` ```
## Diagnostic and troubleshooting
{-describe messages-}
qwer
## T sensors abbreviations ## T sensors abbreviations
Abbreviations used in the documentation and firmware <br><br> Abbreviations used in the documentation and firmware <br><br>
@ -349,13 +349,12 @@ Additional sensors, disabled and not used by default:
| Ts2 | additional sensor2 | | Ts2 | additional sensor2 |
## Hints ## Hints
<br>
For more information about Heat Pumps look at [Wikipedia about HP](https://en.wikipedia.org/wiki/Heat_pump).<br> For more information about Heat Pumps look at [Wikipedia about HP](https://en.wikipedia.org/wiki/Heat_pump).<br>
If you are interested in questions like "how refrigeration systems works" read Patrick Kotzaoglanian books.<br> If you are interested in questions like "how refrigeration systems works" read Patrick Kotzaoglanian books.<br>
If you want more technical details, sophisticated scmemes, "how EEV can be driven by temperature" diagrams, etc. refer to vendors manuals (you can find a lot in Alfa Laval brochures, Danfoss guides, and so on).<br> If you want more technical details, sophisticated scmemes, "how EEV can be driven by temperature" diagrams, etc. refer to vendors manuals (you can find a lot in Alfa Laval brochures, Danfoss guides, and so on).<br>
For refrigerants and oils types comparison see wiki.<br> For refrigerants and oils types comparison see wiki.<br>
<br>
## Personal experience ## Personal experience
Note that the SCT013 sensor and the current monitoring scheme cannot be used for accurate measurements and accurate COP calculations. Use wattmeter for accurate power measurements.<br> Note that the SCT013 sensor and the current monitoring scheme cannot be used for accurate measurements and accurate COP calculations. Use wattmeter for accurate power measurements.<br>
Measuring the temperature of a warm floor with sensor at one point is a bad idea - it's better to deal with temperature of the "hot in" water coming from all over the floor, as implemented in firmware.<br> Measuring the temperature of a warm floor with sensor at one point is a bad idea - it's better to deal with temperature of the "hot in" water coming from all over the floor, as implemented in firmware.<br>
@ -364,12 +363,13 @@ I tried the scheme with a flooded evaporator in 2019 and found it extremely prob
Deep regeneration schemes are useful only for some refrigerants and only in certain temperature ranges. I also tried deep regeneration, I was convinced that the theory coincides with the practice and then also refused this idea.<br> Deep regeneration schemes are useful only for some refrigerants and only in certain temperature ranges. I also tried deep regeneration, I was convinced that the theory coincides with the practice and then also refused this idea.<br>
In general, it is possible by complicating the refrigeration scheme to win somewhere 1%, somewhere 3%, but all this leads to significant time and money costs, compared to not very much profit.<br> In general, it is possible by complicating the refrigeration scheme to win somewhere 1%, somewhere 3%, but all this leads to significant time and money costs, compared to not very much profit.<br>
Summary: If you want experiments - Experiment. Want reliably and quickly - make system simple.<br> Summary: If you want experiments - Experiment. Want reliably and quickly - make system simple.<br>
<br>
## License ## License
GPLv3. <br><br> GPLv3. <br><br>
This product is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. This product is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.<br>
<br>
## Author ## Author
<br>
gonzho АТ web.de (c) 2018-2021<br><br> gonzho АТ web.de (c) 2018-2021<br><br>