Choose a boiler that runs on gas is not easy, especially if you do not know basic information about the capabilities of the equipment supplied. But the best gas units are in high demand, despite the high cost and labor-intensive work on the harness.
Innovations of system engineering from BUDERUS and Vaillant Logamax, economical fuel consumption from BAXI and BOSCH ZS or non-destructible automatics from Polidoro and Honeywell ... What to give preference? In this case, any useful advice helps and reassures, it is enough to determine the criteria for selecting brands.
Classical criteria for choosing gas boilers
The relevance of the use of heating gas boilers annually increases. The reasons for the demand for autonomy for a house are simple - the price availability of fuel "gas" and the variety of types of gas boilers for heating are the driving force of progress.
But the abundance of models of aggregates raises the natural question of the consumer and the builder: "How to choose the best gas boiler for heating a private house?".
Eliminate the undesirable slip in the selection helps to study the technical characteristics of heating units and the criteria for selecting a gas boiler by its functionality.
Recall that the criteria for choosing a gas unit are:
- functional capabilities of boilers (heating, heating and hot water)
- structural features of floor and wall units
- capacity or capacity of gas boilers
- equipment delivery kit from the manufacturer
- possibility of self-connection.
In addition to the above selection criteria, the requirements and measures for the construction of a boiler house on gas, of which told here
Choosing a gas boiler yourself
functionality - contours
Recall that it is necessary to distinguish between gas boilers in terms of functionality - one- and two-circuit, the functions of which limit the heating of the premises or provision of heating and hot water without additional connection of equipment.
Useful tips how to deal with the contours of the boiler, presented in the video.
The next criterion of choice is the peculiarities of the construction of boilers on the gas, ensuring the freedom of installation, installation and connection of the unit.
design features
By design features should be distinguished:
- floor gas boilers, placed in a boiler room on the floor or a platform
- placed in a niche or on a frame of a wall - wall.
Let's say that the hinged boiler is distinguished by the presence of attachment points and bracketed hinges on the back cover of the unit.
A significant criterion is the capacity parameter of gas boilers or performance.
Helpful Tips
According to experts, wall units have a number of advantages that allow not to make an additional area under the boiler room and pull the chimney through the roof. It is possible to place the boiler wall above or under the furniture, and the outlet of the chimney pipe to be carried through the wall.
Therefore, the wall version of the gas boiler, capacity of 16-35 kW, is suitable for small rooms of private houses. It does not hurt to remember that it is not recommended to install a wall-mounted boiler in rooms without window frames, on balconies and in the ground floors.
However, any design features and features of the units should be supported by the calculation of power.
simple power calculation
Traditionally, the general formula is used to calculate the heating boiler in terms of area: for every 10 sq. M. Of area take 1 kW. The volume of heated space is multiplied by the height of the ceilings. The capacity of the unit, which is supposed to be installed, is shown in reserve. In practice, accurate calculation also depends on the climate of the region and the degree of house insulation.
But the well-known parameters and criteria for choosing a boiler unit - the design and power will not provide complete information about the capabilities of the equipment. Therefore, it does not hurt to learn more about the components of the units: the gas system - the type of burners and the ignition system, as well as the hydraulics of the boilers - the heat exchangers.
gas system - type of burners and ignition system
Modern gas boiler systems are fully adapted to the conditions of lowering the inlet pressure of natural gas to 5 mbar with the possibility of reconfiguring to liquefied fuels.
This is facilitated by the ignition system with continuous flame modulation and the piezo ignitor of the pilot burner, the stainless steel splitters on the burners and the concept of how to choose a gas boiler for heating a private house.
existing types of burners
Most gas boilers are equipped with two types of burners - atmospheric type and fan model. Moreover, the design of the burner of the atmospheric type is effective and is used in any gas aggregates.
It is noted that the fan burners are volatile. Fan burners will require a highly automated kit, which will result in an increase in the unit's price.
Helpful Tips
Modulated gas burners have the ability to adjust the change in combustion power in the modulation range from the t mode in the room, ensuring fuel economy. But this type of burner is more expensive.
hydraulic system - heat exchangers
Hydraulics of gas units is simple. Units of double-circuit gas boilers are equipped with two types of heat exchangers - primary and secondary, single-circuit main heat exchanger. The primary heat exchanger in the models of the units is made of steel, copper or cast iron and has corrosion protection due to coating with a certain composition.
In the two-circuit models, the secondary plate heat exchanger is made of stainless steel. The three-way valve and the built-in circulation pump support the heat exchange hydraulics.
To conclude, the components of which system can be confidently given preference and choose a gas boiler, provide feedback.
Reviews
Regional representative of the brand BAXI
Undoubtedly, the leadership in the boilers market belongs to European producers. The models of single- and double-circuit gas boilers are readily available from official BAXI partners. Far from it, this is not a marketing move, but real sales statistics.
A well-known resource that provides the consumer with information on the analysis of gas boilers Boiler Guide, considers a wall model
Baxi 200 Combi (Prime), which includes 2 circuit models 24 kW and 28 kW, the best offer of the year.
Compact model (26 kg) is available for self-assembly with the possibility of connection for flexible placement.
Private developer, Ivan Romanovich
In the summer, I purchased a BAXI SLIM 1.230Fi single-circuit gas boiler with an electronic type of ignition. The unit with a closed combustion chamber of stainless steel and five sectional primary cast iron heat exchanger.
The useful thermal capacity is about 30 kW with the consumption of natural gas 3.50 m3 / h (meter data). I will not hide it, the convenience of operation is ensured by the built-in diagnostic system and continuous flame modulation. The original addition is the possibility of connecting an external boiler for heated water.
General information on the choice of the gas unit is provided by this video.
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