What is the hydraulic block of a gas boiler

Natural gas is one of the most efficient heat sources. In this regard, there are a large number of varieties of such equipment, as evidenced by various photos of gas boilers for heating a house.

Despite the increased requirements for such devices, their variety only increases, thereby increasing efficiency, energy efficiency and heat transfer.

Varieties of boilers

A gas boiler for heating a private house can be made in various versions. Their types include:

The number of contours. Equipment with one circuit involved in the heating process. A boiler with two circuits is considered more efficient, where water is heated in parallel, which can be used for washing dishes and so on.

Mounting method. Simple structures are located on the floor and do not require additional equipment. More modern options are wall-mounted and require additional electrical equipment.

Dependent and independent from electrical power supply.

Working with and without a chimney.

These are the main criteria for dividing gas equipment. The choice of a suitable product takes place in each case separately, it all depends on the parameters of the premises and the needs of the customer.

Types of gas boilers by design

By the number of contours

This parameter defines the purpose of the device.

Single-circuit - used only for heating or hot water supply.
Double-circuit - can be simultaneously used for heating and hot water supply.

By the way of creating thrust

Natural draft - carried out in a natural way, without the installation of special devices, due to the difference in the specific gravity of air inside and outside the room.
Forced ventilation draft is created by installing special equipment.

By type of ignition

Electronic ignition - allows the gas boiler to operate in automatic mode. The main condition for work is the availability of electricity.
Piezoelectric ignition - carried out in manual mode, by pressing a special button installed on the gas boiler.

By installation method

Floor standing - when the device is installed on a prepared base.
Wall-mounted - the design of the device provides for a hinged mount that allows wall mounting.

By the type of power modulation

Single-stage - when the coolant is heated to a predetermined temperature, combustion stops and ignites again, when the temperature drops below the lower limit of the coolant temperature.
Two-stage - when the set temperature of the coolant is reached, combustion does not stop, and the device works at 40% of its power, and turns on at full power when the temperature of the coolant drops.
Modulated - capable of operating with different power from 10 to 100%, depending on the parameters of the coolant.

As a rule, floor-standing gas boilers have a higher power and a range of its regulation. Wall-mounted models are more compact and equipped with various automation systems that ensure the safety of the devices (interlocking thermostats, flame sensors, traction control sensors, a shutdown mechanism during power outages, etc.).

Natural draft devices are installed in non-residential premises and serve, as a rule, for heating small houses and industrial facilities.Forced draft boilers with a closed combustion chamber do not burn oxygen in the room in which they are installed and do not require additional supply of cold air to ensure normal combustion of the gas used.

Convection boilers carry out, heating the heat carrier due to the heat obtained during the combustion of gas. Condensing boilers are more energy efficient and use, in addition to the heat obtained from the combustion of gas, the thermal energy of the water vapor contained in the exhaust flue gases.

The cost

The price of gas boilers for heating a house depends on many parameters. These include:

The efficiency of the device and its efficiency;
power, dimensions and the need for additional equipment;
brand awareness of the manufacturer and the seasonality of the purchase.

Before purchasing a gas heater, monitor the market in advance and select the right product for which you can find the necessary spare parts if it fails.

How to choose

In order to choose a good gas boiler for your home, you must adhere to the following criteria. These include:

Place of installation. In this case, the choice of the model is carried out according to the fixation method. For example, a floor-standing gas boiler has compact dimensions. The equipment is characterized by high efficiency.

In addition, it consumes a minimum amount of gas during operation. Wall-hung boilers require an uninterrupted supply of natural raw materials. This model is used for small spaces.

Specifications. Most often, it is preferable to choose single-circuit equipment for heating a private house. They differ in a simple device. It has a burner and one large heat exchanger. Double-circuit models equipped with a boiler and a gas flowing water heater.

Ventilation type. If the model provides for natural ventilation, then the hood is located in the chimney area. One end is located inside the building, and the other end is brought out of the living space. Thanks to this, it is possible to timely get rid of gas leaks.

The combustion chamber. Modern models have closed and open combustion chambers. Equipment with an open chamber is called atmospheric. In this case, air enters the burner spontaneously.

Excess combustion products are removed through natural ventilation. Models with a closed combustion chamber have additional fans that ensure the removal of smoke and combustion residues.

The material from which the heat exchanger is made. For the production of gas boilers, cast iron and hardened steel are used. Equipment with a cast iron heat exchanger is characterized by long-term operation. No rust or cracks appear on the surface of this material.

Ignition. Experienced experts recommend choosing models with electric ignition of the burner.

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Safety of use. Advanced models are equipped with automatic sensors that allow you to monitor the operation of the unit at different stages of its operation. They provide an even supply of heat to the room.

In addition, they warn of gas leaks. In this case, the system blocks the spark supply and automatically shuts off the fuel supply.

Cost. Prices for gas boilers for a home are calculated based on the availability of additional options and the amount of heat energy released.

Efficient devices

Double-circuit gas boilers for home heating are very popular. This is due to their features:

one burner simultaneously heats up two circuits, which saves energy resources;
they take up little space and there is no need to install a gas water heater;
this is a fairly effective and reliable equipment.

Double-circuit boilers are very popular, they cost a little more than standard equipment with one circuit, but they allow you to save money without buying a gas water heater.

Which gas boiler is the best?

The best gas boiler for home heating must meet certain requirements. These include:

economical consumption of energy resources;
safety of equipment operation;
production of a small amount of noise;
simplicity of design and availability for repair;
convenience in daily use.

As a rule, double-circuit boilers are more in demand among the population.

Choosing the right gas boiler

Understanding the question: how to choose a gas boiler for heating a house - you will need to take into account some rules:

initially it is necessary to determine the heated area of the room;
it is important to foresee the local climate and possible heat losses;
selection of equipment is based on 1 kW of boiler power per 10 m² of the room area;
the boiler is selected with a power reserve of 25%, which allows it to be operated not at full capacity.

It is recommended to select equipment with the maximum possibility of smooth temperature control. It is better to purchase a two-stage boiler, which will allow using the equipment in two modes and significantly reduce energy costs.

Carefully study the technical characteristics of the gas boiler, this will make it possible to choose the right equipment and enjoy its trouble-free operation, while saving the family budget!

Classification of boilers by fuel used

In order to correctly choose which boiler is better for heating a private house, it is necessary to study all types of equipment offered by manufacturers.

Domestic and foreign brands present on the market a rich assortment and different lines of models that differ in the type of fuel used in the process of functioning: