Step by step
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Create an API client
In the developer.viessmann-climatesolutions.com portal create an API client without a secret, with reCAPTCHA disabled and the redirect address shown in the HEMS device form.
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Add device
Model “Viessmann — ViCare API”, enter the Client ID.
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Connect the account
On the device page click “Connect ViCare account” and log in with the ViCare account.
The Viessmann API limit is 1450 calls per day — HEMS reads every 5 minutes.