# Smart-Boiler
this node belongs to a suite of nodes to control heating made by multiple intelligent Valve and a Central Boiler.
The scheduling is done by Smart-Scheduler where multiple schedule and set-point can be defined,
The valve management is done by Smart-Valve where multiple valve can be grouped in one room or group of room.
And finally Smart-Boiler aims to control the boiler and to determine the right temperature and set point seeting according to the multiple valves.
Smart-Boiler
Received input from Smart-Valves and expect message as :
msg.payload with:
- sp for setpoint, int value
- temp for current valve temperature, int value,
- name for valve description, string value,
- id for unique valve identification, int value
ex input message:
msg.payload={ sp:23,temp:20,name:"Valve kitchen", id:1}
Each input received will either create a new entry in the valves stack or update the current entry in the stack.
Smart-Boiler will determined the active valve to be sent to the Boiler, the active valve is determine by valve set point (target temperature) > valve current temperature
and by the highest gap between set point and current temperature.
Exemple :
- Valve A : set point 19°C, current temperature 21 °C => inactive
- Valve B : set point 23°C, current temperature 20 °C, gap is 3 °C => active but not sent to boiler,
- Valve C : set point is 24°C and current temperature is 19°C, gap is 5°C => active and sent to the boiler.
Additionnal functionnal rules:
- If no active valve is found then highest sp of inactive valve is set as a reference to the boiler.
- If no input after max duration (defined in setting), security message is sent to the boiler to avoid endless heating,
Output:
- Can be directly to MQTT (preferred);
- regular output:
msg.payload={ sp:23,temp:20,name:"Valve kitchen", id:1, lastTsUpdate: ISOTIME};
Configuration settings:
MQTT: configuration node to define mqtt server connexion
MQTT updates: when checked, update messages are directly sent to the defined topics
Output updates: when checked, update messages are sent to the regular output,
Set point topic: MQTT set Boiler set point topic
Temperature topic: MQTT set Boiler current temperature topic
Leading Device topic: MQTT Boiler text topic to indicate which valves is driving the heating
Update cycle duration: valve stack evaluation duration cycle
Max Duration since last input: maximum duration before sending security message to the boiler with default values
Default temp: security message is sent with default temp
Default set point: security message is sent with default set point
## Run locally
