Who has experience with Control Nefit via Opentherm

This Forum is about the Opentherm gateway (OTGW) from Schelte

Moderator: hvxl

Post Reply
arno
Starting Member
Starting Member
Posts: 6
Joined: Fri Dec 12, 2014 11:29 pm

Who has experience with Control Nefit via Opentherm

Post by arno »

Hi,

I have build a system to control my heating. All rooms are controlled individual on time and temperature. The boiler ( Nefit ) I control via on/off control based on the boiler temperature. The boiler temperature is calculated based on the outside temperature. The system works very well. However, since my Nefit can also be modulated I am looking to control it via OpenTherm ( with Nefit convertor ).

Is there anyone who has experience with this setup ?

Looking forward for responses.

Best Regards,

Arno
cyberde
Starting Member
Starting Member
Posts: 9
Joined: Mon Feb 10, 2014 11:32 am

Re: Who has experience with Control Nefit via Opentherm

Post by cyberde »

I have a Nefit proline heater and I am using the Honywell Round for modulation and also had to buy the Nefit OpenTherm converter.
It works very well with the gateway!
arno
Starting Member
Starting Member
Posts: 6
Joined: Fri Dec 12, 2014 11:29 pm

Re: Who has experience with Control Nefit via Opentherm

Post by arno »

Hi Cyberde,

Thanks a lot for your answer. Would it be possible to send a wiring diagram how your have connected everything ?

Br,

Arno
cyberde
Starting Member
Starting Member
Posts: 9
Joined: Mon Feb 10, 2014 11:32 am

Re: Who has experience with Control Nefit via Opentherm

Post by cyberde »

Pretty simple.

Thermostat --- OpenTherm Gateway -- Converter -- Nefit

The converter can only be connected one way to the Nefit, other than that it doesn't matter how you connect the wires. Generally it's a good idea to connect for example Red to Red, but again, it doesn't matter.
Akatar
Senior Member
Senior Member
Posts: 1134
Joined: Thu Nov 22, 2007 12:25 am
Location: the netherlands

Re: Who has experience with Control Nefit via Opentherm

Post by Akatar »

first check with nefit

the converter doesn't work with every nefit
arno
Starting Member
Starting Member
Posts: 6
Joined: Fri Dec 12, 2014 11:29 pm

Re: Who has experience with Control Nefit via Opentherm

Post by arno »

Hi,

How can you control the CV boiler temperature directly from the OpenTherm interface ?

Br,

Arno
Post Reply

Return to “Opentherm Gateway Forum”