Attaching the right wires Netatmo Thermostat

You need some help attaching the thermostat to your specific boiler. This way please !
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MKKM
Posts: 5
Joined: 04 Jun 2017, 11:09

Attaching the right wires Netatmo Thermostat

Post by MKKM »

Hi, I need help for the attaching of the wires for the smart thermostat.
Can you help me?

I want to attach it to the room-Thermostate and not the boiler. The heating system is (district heating = Fernwärme) with a Samson trovis system. I want to regulate the temperature individually in 3 room with three separate Netatmo thermostats.

Following picture is the bedroom. It is a combined switch with two light switches above

The old room thermostat (to be changed) is this one: https://www.amazon.de/Merten-Zentralpl- ... B0014DMHP8
B78AE820-42CB-4339-9797-3DD3CCA23D83.jpeg
B78AE820-42CB-4339-9797-3DD3CCA23D83.jpeg (713.31 KiB) Viewed 1714 times

Thanks in advance
mkkm
Netatmo weather V4 (3x indoor, Rain gauge)
Netatmo Security Cams 2x
Netatmo Video doorbell
Netatmo smart radiator valve 3x
Netatmo Smart Thermostat 3x
GEORGzer
Posts: 2663
Joined: 14 Jan 2014, 18:14

Re: Attaching the right wires Netatmo Thermostat

Post by GEORGzer »

You have to isolate the Blue N wire, since you won‘t need it anymore.
The other two (black and brown) have to be connected to the terminals of the Netatmo Thermostat, polarity is not important.

Please check your fuses and switch off the power of your local heating-controller. Double-check if the old thermostats are really powerless.


Diese Kabel laufen zum Wohnungs-Heizkreis-Verteiler. Der ist meist im Vorraum oder Bad/WC in Fußbodennähe und darin befinden sich die Stellmotoren und eine elektronische Steuerung. Dieser Stromkreis muss ausgeschaltet werden um sicher arbeiten zu können, sollte im Wohnungs-Sicherungskasten mit einem eigenen Schutzschalter separat abgesichert sein.
Home: Weather Station (V3 + Rain & Wind Gauge, 3 additional Indoor Modules, Shield), Valves Starter Pack + 7 Valves, Video Doorbell
Office: Thermostat (V2), Healthy Home Coach, Smoke Alarm, 2 2in1 Sensors

Not a Netatmo employee
MKKM
Posts: 5
Joined: 04 Jun 2017, 11:09

Re: Attaching the right wires Netatmo Thermostat

Post by MKKM »

Merci! I will try it today!
Netatmo weather V4 (3x indoor, Rain gauge)
Netatmo Security Cams 2x
Netatmo Video doorbell
Netatmo smart radiator valve 3x
Netatmo Smart Thermostat 3x
GEORGzer
Posts: 2663
Joined: 14 Jan 2014, 18:14

Re: Attaching the right wires Netatmo Thermostat

Post by GEORGzer »

Correction: since there are 2 blue wires (didn‘t spot that at first), they should be connected using a terminal, not isolated.
They are not needed for the new Netatmo Thermostat, but the connection between the wires has to be maintained.
Home: Weather Station (V3 + Rain & Wind Gauge, 3 additional Indoor Modules, Shield), Valves Starter Pack + 7 Valves, Video Doorbell
Office: Thermostat (V2), Healthy Home Coach, Smoke Alarm, 2 2in1 Sensors

Not a Netatmo employee
MKKM
Posts: 5
Joined: 04 Jun 2017, 11:09

Re: Attaching the right wires Netatmo Thermostat

Post by MKKM »

Perfect! Thank you!!
Netatmo weather V4 (3x indoor, Rain gauge)
Netatmo Security Cams 2x
Netatmo Video doorbell
Netatmo smart radiator valve 3x
Netatmo Smart Thermostat 3x
Jimhunt100
Posts: 1
Joined: 18 Oct 2023, 16:40

Re: Attaching the right wires Netatmo Thermostat

Post by Jimhunt100 »

Hi

A quick follow-on question. Why does it not matter which socket the Live wire is connected to (polarity) ? Is the Thermostat smart enough to detect which wire is live and use the other as switch live ? (does this not impact the boiler ?)

Thanks !
Jim
GEORGzer
Posts: 2663
Joined: 14 Jan 2014, 18:14

Re: Attaching the right wires Netatmo Thermostat

Post by GEORGzer »

Jimhunt100 wrote: 18 Oct 2023, 16:45 Is the Thermostat smart enough to detect which wire is live and use the other as switch live ?
The opposite actually, the Thermostat/Relais is dumb enough that it doesn‘t matter 🤣
The two terminals of the Thermostat mounting-plate and the black and grey wires of the Relais all do the same thing. When heating is requested, the contact between them gets closed, allowing current (be that high or low voltage) to run from one wire to the other. And which direction it travels just doesn’t matter.

That‘s also why those are called „dry contact thermostats“.
Home: Weather Station (V3 + Rain & Wind Gauge, 3 additional Indoor Modules, Shield), Valves Starter Pack + 7 Valves, Video Doorbell
Office: Thermostat (V2), Healthy Home Coach, Smoke Alarm, 2 2in1 Sensors

Not a Netatmo employee
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