Hi All
My first post & hoping some might be able to help. I’m sure you guys have been asked the same thing many times before, but hopefully some help will be forthcoming.
The Problem.
I have an old Coal fired central heating boiler. The temperature is controlled by a bulb & capillary thermostat sensor mounted on the side of boiler. that starts a fan when the temperature is low. However, due to the mass of the boiler (and water) there can be a temperature lag between the boiler and the coals. So, when the water pump is off, the boiler & water temperature can remain higher than the coals. So in certain conditions the coals go out.
In short, I would like to control a fan (240v ac 0.2A) dependent on a temperature between roughly 20C - 100C and would to be able to adjust the upper & lower temperatures.
I would really like to, not only try and, with your help, build this, but also, understand the build / circuitry.
There are other aspects that I would like to have a look at, but probably best just stick to a less complicated solution for now….. a servo to control an air valve to restrict air flow through the fan in windy conditions.
Cheers
Nick
My first post & hoping some might be able to help. I’m sure you guys have been asked the same thing many times before, but hopefully some help will be forthcoming.
The Problem.
I have an old Coal fired central heating boiler. The temperature is controlled by a bulb & capillary thermostat sensor mounted on the side of boiler. that starts a fan when the temperature is low. However, due to the mass of the boiler (and water) there can be a temperature lag between the boiler and the coals. So, when the water pump is off, the boiler & water temperature can remain higher than the coals. So in certain conditions the coals go out.
In short, I would like to control a fan (240v ac 0.2A) dependent on a temperature between roughly 20C - 100C and would to be able to adjust the upper & lower temperatures.
I would really like to, not only try and, with your help, build this, but also, understand the build / circuitry.
There are other aspects that I would like to have a look at, but probably best just stick to a less complicated solution for now….. a servo to control an air valve to restrict air flow through the fan in windy conditions.
Cheers
Nick