Central heating driver – Camino stove

[Vermes]

It is a regulation of central heating Camino stove. It is based on opening the flap for a time, when the temperature increases of a certain value (measured by DS18B20), then closing it for a certain time and opening again, if the temperature does not reach the set temperature. The drive is a slightly reworked contactor (42V coil). The system can work on ZL2-VR board, Atmega8 and the contactor 220V or Atmega16 (8MHz) in the daily system; four separate temperatures depending on time of day, adjustment of alarm, purge time, purge period, hysteresis and firing temperature. Settings are stored in EEPROM. There are also two relays on the board separately adjustable, which can be used for turning on the pump. Limit switch is built on the contactor. The limit switch serves to control the actuation of the flap. An additional LCD display on 6m cable and control buttons were assembled in order to adjust to date from house while the stove is in the basement. Cable is routed to which you can add a DS to read the temperature in the apartment.

The program was written in BASCOM, it takes about 70% of memory. The board was made by thermal transfer method, protected against oxidation and dust using a double layer of lacquer.

There is a plate mounted over the contactor to protect the mechanism from coal, which can fall while loading the stove.

Link to original thread (useful attachment) – Sterownik C.O. piec Camino

 

[tpetar]

Nice project, but only one suggestion, to put more temp sensors. Even today newest commercial house heating have that common lack, they measure temp just in one room where is temp sensor installed, and in other rooms are different temp and problem occurs. Good controller have multiple temp sensors should I say for each room, and all obtained data from sensors go to uC which later control furnace and electromagnetic valve on each radiator in each room.

If its not central heating system this project is right choice.

 

[eagledot]

Add one electric shunt in each room for any fluid based heat distribution system and your set