Connecting the relay to Bosch Condens 3000w

You need some help attaching the thermostat to your specific boiler. This way please !
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ShanKeats
Posts: 2
Joined: 20 Nov 2022, 18:30

Connecting the relay to Bosch Condens 3000w

Post by ShanKeats »

Hello,
I’m trying to connect the Netatmo relay to my new boiler, Bosch Condens 3000w. See picture.
I’ve disconnected the existing thermostat and connected the blue and brown wires to N and L respectively, and the black and grey wires to Ls and Lr.
The relay has power but it shows a blue lights that blinks constantly and the boiler doesn’t respond to the relay.
Is this a wiring problem or is this because of the wifi connection?
Thanks in advance ;)
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GEORGzer
Posts: 2663
Joined: 14 Jan 2014, 18:14

Re: Connecting the relay to Bosch Condens 3000w

Post by GEORGzer »

Wiring should be correct. The boiler has to be set to the desired temperature with the turn-knobs, like before with the old thermostat.

You can test your boiler by turning off the power, disconnect the black/grey wires from Ls and Lr and put a piece of wire between those two terminals. When you switch the power back on your boiler should turn on as well.
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
ShanKeats
Posts: 2
Joined: 20 Nov 2022, 18:30

Re: Connecting the relay to Bosch Condens 3000w

Post by ShanKeats »

Works perfectly now!
Thank you 😊
GEORGzer
Posts: 2663
Joined: 14 Jan 2014, 18:14

Re: Connecting the relay to Bosch Condens 3000w

Post by GEORGzer »

👍
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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