Now, in the illustrations, I will analyze several errors in the heating system of a private house, indicating the incompetence of the installer or the ignorance of the owner of the house, who mounts it for the first time. They are all elementary. In addition, if you know about them, then the owner of the new building will be able to understand who works for him, "Sabbath-installation" or "engineer-plumber"
The first mistake
The use of shut-off valves in the heating system made of polypropylene, even if the pipeline itself is made of this material. This is due to the fact that these ball valves have a short service life, especially on heated systems. Usually, they begin to flow along the stock, but more often they cease to perform their function, to shut off the water. The ball inside sticks and applying force on the handle, the stem breaks.
The second error
Incorrect installation of the coarse filter. The sludge mesh inside should collect debris when installed horizontally. And don't just hold back when vertical.
Error three
The coarse filter and external circulation pumps must have two shut-off valves. Their need is dictated by the possibility of removing the pump and cleaning the filters without draining the coolant.
Mistake four
A delayed-action mine is the installation of shut-off valves between the boiler (especially solid fuel) and the relief valve (safety groups). If the taps are shut off during the operation of the boiler, it will damage the equipment, and possibly injure household members.
Correct installation of the safety group implies its installation between the boiler and the shut-off valve without shut-off valves.
Error five
Sometimes it is necessary to add a coolant to the heating system. If water is represented in this role, then it is usually added under pressure from a cold water supply. And the water temperature, especially in winter, can be quite low. And this is 3-5 ℃. If such water is supplied directly to the boiler, then he will not thank you for this. A sharp drop from 40 ℃ to 5 ℃ can negatively affect the heat exchanger. And if it is cast iron, then it will completely destroy the latter.
The make-up tap is mounted only on the supply, until cold water reaches the boiler, having made a circle, it will be heated by the system and will not harm expensive equipment.
In addition, perhaps some moments will be