guntamatic 1.4.0

module to get data from a Guntamatic heater e.g. BMK 20

This python module allows you to contact your Guntamatic BMK heater and get operational status information It includes an example binary 'heater.py' which can be installed as the guntamatic binary to instantly get data in your cli. The Guntamatic class can be used by IOT frameworks to be called regularly and plot data and the like.

The exact outputs might depend on your model and firmware.

release history

1.0.1: don't generate an empty sensor as last line, skip empty lines 1.0.2: update homepage 1.0.3: clean up repo 1.1.0: Add a parse_data function that does translations and skips diagnostic values. We now only return relevant values that have a hardcoded description. 1.2.0: Raise an exception in parse_data if no Serial was present 1.3.0: Always return all default sensors, even if they have None as value 1.4.0: Translate to snake_case; Home Assistant prefers this, they are easier to split if you need to migrate.

tests

PYTHONPATH=. pytest tests/test_heater.py

roadmap

Currently this library only uses daqdata.cgi and dacdesc.cgi There is also a status.cgi json interface, and probably a lot more is possible when you have an api key (https://github.com/openhab/openhab-addons/tree/main/bundles/org.openhab.binding.guntamatic ) To be added in the future.

par.cgi returns a full list of internal parameters

?key=$KEY parameter should give you more options according to rumors You can get the key for your boiler from guntamatic tech Support.

ext/daqdesc.cgi?key= should give this in json format according to rummors. https://github.com/wolfgangr/guntaPERL

Example Data

The following sensors are available for a Guntamatic BMK 20 heater:

Sensor	Value	Unit
Running	Service Ign.
Boiler temperature	14.09	°C
Outside Temp.	16.15	°C
Buffer load.	22	%
Buffer Top	44.56	°C
Buffer Mid	43.48	°C
Buffer Btm	34.01	°C
Boil.shunt pump	0	%
Suction fun	0.00	%
Primary air	0.00	%
Seconday air	0.00	%
CO2 Content	18.05	%
DHW 0	44.50	°C
DHW Pump 0	0	%
DHW 1	-20.00	°C
DHW Pump 1	0	%
DHW 2	-20.00	°C
DHW Pump 2	0	%
Heating circulation pump 0	OFF
Room Temp:HC 0	60.00	°C
Room Temp:HC 1	24.68	°C
Flow is 1	18.61	°C
Heating circulation pump 1	OFF
Room Temp:HC 2	21.77	°C
Flow is 2	17.72	°C
Heating circulation pump 2	OFF
Heating circulation pump 3	OFF
Room Temp:HC 3	-9.00	°C
Room Temp:HC 4	-9.00	°C
Flow is 4	-20.00	°C
Heating circulation pump 4	OFF
Room Temp:HC 5	-9.00	°C
Flow is 5	44.00	°C
Heating circulation pump 5	OFF
Heating circulation pump 6	OFF
Room Temp:HC 6	-9.00	°C
Room Temp:HC 7	-9.00	°C
Flow is 7	-20.00	°C
Heating circulation pump 7	OFF
Room Temp:HC 8	-9.00	°C
Flow is 8	44.00	°C
Heating circulation pump 8	OFF
Program	HEAT
Program HC0	OFF
Program HC1	OFF
Program HC2	HEAT
Program HC3	OFF
Program HC4	OFF
Program HC5	OFF
Program HC6	OFF
Program HC7	OFF
Program HC8	OFF
Interuption 1
Interuption 2
Serial	959103
Version	32a
Operat. time	1122	h
Service Hrs	1876	d
extra-WW. 1	-20.00	°C
extra-WW. 2	-20.00	°C
B extra-WW. 0	OFF
B extra-WW. 1	OFF
B extra-WW. 2	OFF
Flow is 0	44.00	°C
Flow is 3	44.00	°C
Flow is 6	44.00	°C
Buffer Top 0	-20.00	°C
Buffer Btm 0	-20.00	°C
Buffer Top 1	-20.00	°C
Buffer Btm 1	-20.00	°C
Buffer Top 2	-20.00	°C
Buffer Btm 2	-20.00	°C
Auxiliary pump 0	OFF
Auxiliary pump 1	OFF
Auxiliary pump 2	OFF

Note: Sensors with a value of -20.00 °C are typically not connected.