Choosing the flat gas column: main criteria for selecting gas flow column

Hot water in the house on the project fed into the apartments through individual flow gas water heaters. And recently, a family in this house faced with the need to replace this unit.

What are the criteria used when selecting a new column

• Heat exchanger material:
• steel;
• high-purity copper;
• simple copper (alloy).

Heat exchanger made of copper alloy has poor corrosion resistance and eventually bursts appear leakage.

This was the reason the replacement column in this case, a leak appeared in eight places at once!

Steel heat exchangers and high purity copper reliable in operation. Steel heat exchangers are cheaper, but the copper heat exchangers is much higher, so stopped on this.

• performance column - the amount of water in liters, that column can warm up for 1 minute.

Recommended performance for simultaneous use of two mixers - 9.7 l / min, one or two faucets and shower -. 10-13 l / min, mixer, shower and bath -. 13 l / min.

Council.When you select a performance, you can use an approximate calculation of the number of users: for 1-2 persons - 7-8 l / min, for 2-3 people 9-10 l / min, for 4-5 persons - 11-12 l / min.. .

For a family of two people chosen column with a capacity of 10 l / min.

• ignition type. In modern columns employed pezorozzhigom (semi-automatic) or the electrical ignition system (automatic).

Semi-columns are cheaper than machines, but the pilot light is lit in them, even when turned off the water, hence the additional gas flow.

Column-automatic machines can work:

• from the network (flaw at a power failure you will remain without hot water);
• on batteries (preferably use alkaline batteries, such batteries last about six months, the salt will have to be changed more often);
• from the hydraulic turbine, i.e. electricity for ignition is used, the water obtained from the motion (such a column are significantly more expensive to cost and repair nedyoshevo hydroturbine).

Considered optimal for this column machine that operates on batteries.

• It is an important indicator minimum pressure of water and the minimum gas pressure.

Desirably, the column was included at a water pressure of 0.15 bar (date columns are often designed for insertion only when 0.2- 0.3 bar) and at a gas pressure of 1.3 kPa.

In our case, these figures were very important, as the house of the old buildings and the infrastructure severely worn.

And, of course, so no problems with the installation of the column, the choice you need to remember the chimney diameter holes (but not the parapet of columns) and on the dimensions of the product.

Good luck in solving everyday problems!

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