Making insurance functions in a hot water heating system

Making insurance functions in a hot water heating system

Good morning !
Safety systems are classified into two categories according to the principle of operation:
Safety systems that put the heating and constantly in touch with the atmosphere.
Safety systems that do not put the heating in the atmosphere directly and permanently.
Depending on equipment used for safety functions, safety systems are classified into three categories:
Safety systems equipped with expansion tanks and pipeline safety open.
Safety systems equipped with safety valves and control valves closed.
Safety systems equipped with safety valves and control valves open.

Insurance to undertake the duties of the safety system equipped with an expansion tank and pipeline safety.
The ensemble consists of open expansion tank, safety lines, lines of movement, expansion pipes, overflow pipes, air ducts, pipes and valves control signal form a whole.

Insurance to undertake the duties of the safety system equipped with closed expansion vessel and safety valve.
In this system functions are performed separately by insurance components:
Closed expansion vessel with membrane separation between water and elastic cushion gas. Retrieves the variances in the volume of water and ensure reserve to cover the inevitable loss of water. Maintains full heating plant with water, minimum pressure of the gas being greater than the pressure of the water column with height equal to the difference in elevation between the consumer the highest placed or fighting the distribution pipes and the minimum level of water in the jar. Safety valves provide pressure limitation by opening them up in the gravel and indirectly the maximum temperature-part. In this system the functions are performed separately for insurance by the system components as follows:
Open expansion vessel takes variances in the volume of water in storage volume contained between the minimum and maximum, ensuring a reserve of water to provide for a period of time the inevitable small losses of water and heating plant maintains full water being mounted at a high level of minimum share required for water from the plant.
Safety valves provide pressure by opening them up and indirectly limit the temperature the maximum installation part. To provide for a system of security is required for all installations of central heating with warm water with temperature up to 115 ° c.
It is not allowed in any form giving up equipment to ensure system security.
In situation of preavarie and activation of the safety functions in normal operation the plant stress can be avoided if you choose reliable equipment in order to limit the temperature of the heating fluid and take measures to maintain their permanent status in life. It excludes categorically the opportunity of using of closed expansion vessels to which the gas is in pillow direct contact with the water from the plant, using vessels the elastic membrane expansion between air and water.For greater certainty, you allow for the flow transducers block arzatorul if heat flow is less than half of the rated flow of the boiler.Whatever the solution adopted should be used only in equipment and products whose quality is certified by the technical approval.

Goodbye!