Node-red-contrib-vib-smart-valve NPM

Smart-valve

The purpose of this project was to replace at my house the existing NETATMO system (very good but not integrated in Home assistant and with no repeater).

I have a boiler with Opentherm Card and a dedicated dev with ESP32 https://github.com/vibr77/Opentherm_HA_MQTT

Changelog 20240102:

Add a mecanism for manual update on the TRV (wip)

Changelog 20231031:

Fixe BRT-100-TRV firmware issue (TRV wrong position stay at 25% open position) with a work around on current temperature

Smart-Valce is part of a suite of nodes to manage multi room heating system based on TRV and boiler

Smart-Scheduler: multi-zonning SmartScheduler,
Smart-Valve: Valve grouping, auto-calibration, manual override,
Smart-Boiler: Boiler OpenTherm, multi valve management.

Smart-valve

This node enables to manage multiple valve (climate) in a same room like one. It support the following features :

External temperature sensor,
Multiple valves updates,
TRV temperture Recalibration based on the external temperature sensor,
Manual update directly on the valve to trigger override message to the scheduler and update the other valve

Key Features:

TRV auto calibration with an external source
Detection of manual update direcly on TRV
Fixe BRT-100-TRV issue on valve postion that stay open
Multi valves in the same room management
Multi mode execution Off / auto / Manual
Multi trigger execution: every cycle, at startup, on change.

Inputs

payload (string):1|on|trigger
sp (integer): 0-35
Outputs

Update home assistant via call service
Update of SP to the boiler (smart-Boiler) or override message to the smart-scheduler

Settings

Name: string, name of the node and also the name of the group sent to the smart-boiler node
Topic: string, not used,
Group Id: integer, used by the smart-boiler node to identify this group of valves, need to be unique
Temperature: string, is the name of the external temperature sensor entity in home assistant ex: sensor.temp9
Update mode: state changed|state changed+startup|every cycle, define how frequently updates are sent to the smart-boiler node
Update cycle: integer, duration in minute between two cycle. default is 5
Allow manual updates: true|false, enable direct set point (target temperature) change on the valve or home assistant. If true when a valve set point ischanged all the other valves are updated and a override message is sent to the smart-scheduler node.
Recalibration: No|Yes|Yes+threshold, enable to adjust the valve (TRV) current temperature based on the external temperature sensor,
Delta threshold: integer, threshold delta between external temperature sensor and the TRV current temperature to trigger recalibration,
Debug: true|false, send debug info to the node-red console
Climate: each valve entry has 2 field:
- climate: string, home assitant climate entity of the valve ex: climate.kitchen
- calibration: string, home assistant calibration entity of the valve ex: number.kitchen_calibration

Execution rules

Step 0: update current group setpoint with the sp of the valve,
Cycle : Step 1: identify if manual updates on valve, then update all valves, Step 2: check and execute recalibration Step 3: based on the execution mode, output to the smart-boiler node
On input: Update the requested set-point on each valves