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kelavrik edited this page Dec 1, 2024 · 60 revisions

Boilers

Baxi

Boiler Master Member ID Required settings Notes
Baxi ECO Nova default Coeff. DHW flow rate correction = 0.1 Pressure sensor not supported
BAXI LUNA Duo-tec E 24 default - Heating does not switch off with
parameter P67=02 in the boiler service menu
Baxi AMPERA 4 Modulation sync with heating = on Pressure sensor not supported, only heating
DHW not tested
Baxi NUVOLA Duo-tec HT 16 default default -
Baxi LUNA-3 default default -
Baxi Duo-tec Compact 24 default default -
Baxi ECO Four 24 F default default -
Baxi LUNA-3 COMFORT default DHW present = on
Duplicate DHW to CH2 = on
-
Baxi ECO Life 1.24 F default default -
Baxi ECO-4s 1 2 default default DHW flow rate not supported
Set max modulation level not supported
Baxi Eco 5 Compact default default Pressure sensor not supported
Baxi Slim 1.620 IN default default Pressure sensor not supported
DHW flow rate not supported

Ferroli

Boiler Master Member ID Required settings Notes
Ferroli DOMIcompact C 24
Board: MF08FA
211 default Pressure sensor not supported
Ferroli Kalis 24C default default -
Ferroli Atlas D Unit 30 default default -
Ferroli Divatech D C24 default Summer/winter mode = on Modulation level not supported
Ferroli Bluehelix Hitech RRT 28C default default -

Ideal

Boiler Master Member ID Required settings Notes
Ideal Logic C30 default default Set max modulation level not supported
Exhaust temp & pressure sensor not supported
Ideal Vogue Max 32 default default -
Ideal Logic Heat2 H18 default default Only the following parameters are supported:
- Flame
- Fault and diagnostic along with codes
- Modulation
- Flow and return temperature

The boiler's physical temperature control must be set to at
least the maximum expected to be set by OpenTherm,
acting as a hard limit on the OpenTherm requests

Immergas

Boiler Master Member ID Required settings Notes
Immergas Nike Mythos 24 default Fix for Immergas boilers = on ?
Immergas Victrix Zeus 25 default Fix for Immergas boilers = on DHW flow rate sensor not supported

Viessmann

Boiler Master Member ID Required settings Notes
Viessmann Vitodens 0-50w default default -
Viessmann Vitodens 100-W B1HC042 default Duplicate DHW to CH2 = on
Sync modulation with heating = on
-
Viessmann Vitodens 100-W B1KC150 default Summer/winter mode = on
Duplicate DHW to CH2 = on
Sync modulation with heating = on
-

Other

Boiler Master Member ID Required settings Notes
Remeha Calenta Ace 40C default default -
AEG GBA124 default default Pressure sensor not supported
Termet Ecocondens Silver 35kW default default Pressure sensor not supported
ITALTHERM TIME MAX 30F default Summer/winter mode = on Pressure sensor not supported
Radiant R2KA default Modulation sync with heating = off Pressure sensor not supported
DHW flow rate sensor not supported
Intergas Kombi Kompakt default default -
Baltur Tesis 24 default default -
Navien NCB700 default default -
Nova Florida Delfis CTFS 24 default default -
Buderus U072 default default -
Bosch wbn 6000-24 default default -
Mizudo M24TH default default -
Rinnai M060SN default Get min/max temp from boiler = off -
De Dietrich PMC-M 24/28MI PLUS 11 Summer/winter mode = on
Heating CH2 always enabled = off
Pressure sensor not supported
DHW flow rate sensor not supported
Exhaust temp sensor not supported
Termet Gold Plus 2 default default DHW switch off does not work
De Dietrich MS 24 FF default default Fault code not supported
Diagnostic status is always on
Vaillant hrSOLIDE VHR NL 18-22C default default Pressure sensor not supported

Boards

Board Chip Flash Recommended GPIOs Where buy
Wemos D1 mini ESP-8266EX 4MB Status LED: 13
OT In: 4
OT Out: 5
OT RX LED: 15
Outdoor sensor: 12
Indoor sensor: 14
Aliexpress
Wemos D1 mini pro ESP-8266EX 16MB Status LED: 13
OT In: 4
OT Out: 5
OT RX LED: 15
Outdoor sensor: 12
Indoor sensor: 14
Aliexpress
Wemos D1 mini lite ESP-8285 1MB Status LED: 13
OT In: 4
OT Out: 5
OT RX LED: 15
Outdoor sensor: 12
Indoor sensor: 14
Aliexpress
NodeMCU V3 ESP-8266 4MB Status LED: 2
OT In: 13
OT Out: 15
OT RX LED: 16
Outdoor sensor: 12
Indoor sensor: 4
Aliexpress
Wemos S2 mini ESP32-S2FN4R2 4MB Status LED: 11
OT In: 33
OT Out: 35
OT RX LED: 12
Outdoor sensor: 9
Indoor sensor: 7
Aliexpress
Wemos S3 mini ESP32-S3FH4R2 4MB Status LED: 11
OT In: 35
OT Out: 36
OT RX LED: 10
Outdoor sensor: 13
Indoor sensor: 12
Aliexpress
Wemos C3 mini ESP32-C3FH4 4MB Status LED: 4
OT In: 8
OT Out: 10
OT RX LED: 5
Outdoor sensor: 0
Indoor sensor: 1
Aliexpress
Wemos D1 mini 32 ESP32-? 4MB Status LED: 2
OT In: 21
OT Out: 22
OT RX LED: 19
Outdoor sensor: 12
Indoor sensor: 18
Aliexpress
NodeMCU 32S ESP32-? 4MB Status LED: 2
OT In: 16
OT Out: 4
OT RX LED: 19
Outdoor sensor: 15
Indoor sensor: 26
Aliexpress

Temperature sensors

Sensor Tested Where buy
DS18B20 Yes Aliexpress
DS1822 No ?
DS1820 No ?
MAX31820 No ?
MAX31850 No ?

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