How to connect an Ariston gas boiler: recommendations for installation, connection, configuration and first start-up

Gas boilers are produced by different companies, which is accompanied by the supply to the market of equipment that requires an individual approach to installation and operation. But you don’t really want to overpay for calling a specialist for installation work, do you? But how to connect an Ariston gas boiler yourself, taking into account the individual characteristics of the purchased equipment?

We will try to help you deal with this problem - our publication will discuss the procedure for installing, connecting and configuring a gas boiler. The order of work when performing the first startup of the equipment is also given. The presented material is supplemented with visual photos and a video.

Ariston boiler connection procedure

Wall-mounted boilers are perhaps the most common among household gas equipment - they are most often choose to install at home potential buyers.

Thus, a modern gas wall-mounted boiler of the Ariston Net model allows you to: start, stop and control the temperature background of heating and hot water.Moreover, all these actions can be performed from anywhere at any time using a familiar smartphone or personal computer.

This is the kind of smart gas equipment that potential buyers of the 21st century prefer to install using the Ariston Net household boiler as an example.

The system provides constant monitoring of energy consumption, which is accompanied by significant gas savings. Thanks to special software, the equipment owner receives real-time notifications about malfunctions.

In addition, if you activate remote control, it becomes possible to solve most problems remotely. However, let's first look at how to properly install a domestic gas boiler of the Ariston brand, as well as the features of its connection, settings and procedure during the first start-up.

Stage #1 - studying the manufacturer’s installation requirements

Judging by the requirements set by the boiler manufacturer Ariston, installation of equipment is the prerogative of exclusively specialists.

Hence the corresponding conclusion - independent installation and first switching on of an Ariston household gas boiler is theoretically impossible (more precisely, unacceptable). Moreover, the first commissioning of equipment is prohibited without a gas service representative.

The manufacturer also reminds the future user regarding the quality of the water with which the gas wall-mounted boiler will work. It is noted: if the quality of water (chemical composition) does not meet technical requirements, the performance of gas equipment is not guaranteed by the manufacturer during the established warranty period.

Installation dimensions and connection points: A – water outlet to the heating system; B – water output to the hot water supply circuit; C – gas supply pipe; D – cold water entry point; E – DHW return flow point

In addition to the technological connection points indicated in the diagram above, there are four more connection points as part of the Ariston gas boiler design:

1. Drain from safety valve.
2. Water replenishment from the network.
3. System drain channel.
4. Return line from the boiler.

The Ariston gas boiler is designed for inclusion in hot water supply and heating schemes that meet the technical specifications.

Operation of equipment is considered unacceptable if the operating mode does not correspond to the intended purpose of the system. It is also unacceptable, according to the manufacturer’s requirements, to carry out repairs yourself.

Stage #2 - preparation and installation of the boiler on the wall

The main unit (gas boiler) is installed on a wall with a high degree of strength. The presence of any vibrations transmitted through the structure of the wall where the Ariston gas boiler is installed is not allowed.

The pipelines connected to the equipment should be protected from possible mechanical damage, as well as the electrical wires supplying the gas boiler.

The premises for installation must be selected taking into account the provided technical and sanitary conditions:

• sufficient level of lighting;
• effective ventilation;
• durable structures.

Finally, during the installation process you must follow established safety rules.

Permissible minimum installation dimensions - parameters that should be taken into account during the installation of the Ariston gas boiler in the work area

Before starting installation of the system, it is necessary to carry out the following operations:

• flushing of hot water supply and heating circuits;
• check the gas for compliance with the fuel type;
• check the design of the gas duct for compliance with the required standard;
• check the quality (chemical composition) of water.

Ariston boilers of typical “C” design, equipped with a sealed combustion chamber, supporting the function of supplying outside air, are not limited by ventilation requirements and the dimensions of the working room.

The normal operation of the Ariston gas boiler continues at a minimum operating temperature of +5 °C inside the working room. At the same time, it is recommended to protect the boiler from possible exposure to external factors and precipitation.

An Ariston domestic gas boiler is mounted on a firmly installed wall, built on the basis of non-combustible material, which is capable of supporting the full weight of the equipment. The location of the gas boiler must be selected taking into account the minimum permissible distances (diagram above) to nearby objects. These requirements are intended to provide access for easy maintenance.

Stage #3 - execution of hydraulic connections

According to the manufacturer’s technical parameters, the maximum permissible pressure inside the pipes of the water supply system is allowed at a level of no more than 6 atmospheres. If this limit of the centralized network water pressure is exceeded, you will have to additionally install a pressure reducer in the system.

Design of the water pressure reducer: 1 – adjusting screw; 2 – inlet pipe for water; 3 – pressure gauge connection point; 4 – water outlet pipe

The dimensions of water pipelines and heating devices that make up the heating circuit are determined based on the residual pressure. The level of this pressure is calculated as a function of the required water flow. In this case, the technical characteristics of the circulation pump are also taken into account.

The instruction manual requires connecting the drain pipe (supplied) to the outlet point of the safety valve. The drain outlet of the safety valve is connected to the drain siphon according to a circuit that makes it possible to visually observe the operation of the safety valve.

The design of the Ariston gas boiler provides for the connection of an external indirect boiler for the purpose of producing hot water. The default hot water temperature is controlled by an NTC sensor. If temperature control is organized using a thermostat, you will need to make adjustments to the gas boiler control settings.

Stage #4 - organization of air injection and smoke exhaust

The design of the Ariston gas boiler allows installation according to the diagram "B" (room air is used) and according to the scheme "C" (outside air is used).

In order to prevent the penetration of combustion products into the air duct system, careful execution of mounting seals is required. It is necessary to install the flue gas exhaust module taking into account that seals are not damaged and flue gases are not allowed to penetrate into the air duct.

A combustion product exhaust system developed for some models of gas equipment manufactured by Ariston. Depending on the typical system design, other configurations are possible

According to the manufacturer's instructions, horizontal sections of flue ducts are installed with a slope of about 3%, directed away from the boiler. This prevents condensation accumulation.

Installation of gas equipment according to scheme “B” requires the organization of effective ventilation and air flow in the work areas.

In rooms where the air may contain corrosive vapors, it is allowed to use only installation according to scheme “C” (outside air supply). Such requirements provide corrosion protection for Ariston gas boilers.

Installation coaxial (dual) system (removal of gases and supply of air), the manufacturer requires the use of original accessories.

The chimney must not be installed in close proximity to materials that are easily flammable. It is also prohibited to install a chimney through structures made from highly flammable materials. If an old boiler is replaced with a new one, all parts of the ventilation and combustion product removal modules must be replaced.

Stage #5 - connecting the chimney/air duct

There are several options for connecting the chimney depending on the configuration of the gas equipment:

• coaxial system (pipe in pipe);
• separate system;
• single-channel chimney.

For the “pipe-in-pipe” connection option for a gas boiler, materials and components that are highly resistant to condensate are used. We talked in more detail about the installation of a coaxial chimney in this article.

Kits for connecting a chimney/air duct are usually not included in the list of equipment for an Ariston gas boiler.Accordingly, additional kits are ordered for a specific connection.

This is what the “pipe-in-pipe” system looks like, which is used as part of the design of Ariston gas boilers of some models

Many gas boilers of the Ariston brand are made taking into account the supply of air and exhaust of gases through a coaxial system, the pipe diameters of which are 60 and 100 mm. Or a separate version can be used with pipes with diameters of 80 by 80 mm. The selection of the gas exhaust and air duct configuration is accompanied by taking into account additional aerodynamic resistance.

Stage #6 - connecting equipment to the power grid

To fully ensure safety, the manufacturer requires the involvement of a qualified specialist to connect and check all electrical connections of the Ariston gas boiler. The manufacturer cancels the warranty on the equipment if a low-quality power supply network is used and grounding system.

A grounding loop for a gas boiler installed inside a private house is a mandatory measure required not only for Ariston brand boilers, but also for any other similar equipment

The power supply system is calculated for the maximum power consumption parameter of a gas boiler. To connect equipment, electrical conductors with a cross-section of at least 0.75 mm are used². Proper safe operation of the gas boiler is ensured by reliable grounding.

Power parameters must be brought into compliance with the standards of the 230V/50 Hz network, observing polarity and the presence of a grounding conductor. The grounding conductor must be used in greater length in relation to the phase and neutral conductors.Wired connection - strictly permanent, without the use of sockets and plugs, made through two-pole circuit breaker.

First start-up and setup of the boiler

When the installation work and connections are completed, you can proceed to setting up and testing the equipment.

Performing the first run

The initial action accompanying the first start-up of an Ariston brand gas boiler is filling the heating circuit water. In this case, it is necessary to set the radiator air valves to working (open) condition.

The same actions aimed at bleeding air from the system apply to the boiler circulation pump. As the circuit fills with water, air is removed from the system, and the water pressure on the pressure gauge reaches 1 - 1.5 atmospheres, the tap on the make-up line is closed.

The first start-up of a gas boiler is usually accompanied by preparatory operations related to filling the system with water, bleeding air, and checking the tightness of gas lines

At the next stage of commissioning of a gas boiler, actions related to the gas supply are performed.

The procedure is approximately as follows:

• open the doors and windows of the workroom;
• exclude the presence of sources of open fire;
• check the burner circuit and control system for leaks.

Testing the control unit and burner for leaks is performed by briefly opening (no more than 10 minutes) the main shut-off valve of the gas line. In this case, the solenoid valve and manual boiler damper are set to the closed position. With this position of the system, the gas flow meter should show a zero result (no leakage).

Setting manipulations with the control panel

Modern gas heating equipment is equipped with a control panel where the user can set the desired operating parameters of the unit. Next, we’ll take a closer look at how to set up an Ariston brand household gas boiler.

Control during operation of the boiler, as well as control in the first start-up mode with the necessary settings, is carried out through the Ariston user control panel

Actually, the user’s actions on the control panel are obvious here:

1. Turn on the device by activating the ON/OFF button.
2. Mark the operating mode parameters on the display.
3. Mark the service mode functions on the display.

Next, the gas parameters are checked, for which the front panel of the boiler is dismantled, the control panel plate is lowered and test manipulations are performed by connecting the measuring pressure gauge to the pressure tap pipes.

These operations are the prerogative of gas service specialists. Doing it yourself is not recommended, as you need to clearly know the functionality of the equipment.

Ariston remote control keyboard layout: 1 – information screen; 2 – DHW temperature regulation; 3 – mode selection key (Mode); 4 – “Comfort” function; 5 – ON/OFF key; 6 – “Auto” mode; 7 – reset key “Reset”; 8 – heating circuit temperature regulation

Then the boiler is started in test mode through the “Chimney Sweep” system function. To enter test mode, activate the Reset button and hold it pressed for at least 5 seconds. The test mode is exited by re-activating the reset key.

Maximum/Minimum Power Testing

This type of test also provides for control sampling of pressure at specialized points of the equipment, followed by measurement of parameters on a pressure gauge. It is necessary to disconnect the combustion chamber compensation tube. Again, the “Chimney Sweep” mode is used, activated through the control panel.

The boiler is tested for the minimum power level in the same way. True, the modulator adjusting screw is additionally used if it is necessary to adjust the minimum operating pressure of the boiler. In this regard, there is a video below, where for some reason the modulator is called a motor.

Putting equipment into operation

The process of starting the device involves the following user actions:

1. Activate the ON/OFF button.
2. Select standby mode.
3. Hold down the Mode button for 3-10 seconds.
4. Wait for the air removal cycle to complete (about 7 minutes).
5. Open the linear gas valve.
6. Switch on the DHW operating mode using the “Mode” button.

If all the actions were performed by a specialist from a specialized company, then he checks the compliance of the gas pressure during operation of the unit and draws up an appropriate report.

He also provides training on safe operation gas equipment and puts the boiler under warranty.

Conclusions and useful video on the topic

A video about the features of the first start-up of the Ariston boiler, in particular, the service setting of the circulation pump is demonstrated. Essentially, this is the work of specialists, but as the video shows, you can do it yourself:

Wall-mounted gas boilers from the series of modern equipment of the Ariston brand are quite complex equipment, even for domestic purposes.Hence the logical conclusion regarding the installation and startup of the Ariston gas boiler - the initial startup of the system should be entrusted to specialists. Expenses, of course, are inevitable, but on the other hand, this ensures the correct operation of the gas system.

Have you installed and configured an Ariston brand gas boiler yourself or entrusted this work to specialists? Share your experience with other visitors to our site in the comments block - add a photo of your boiler, tell us about the difficult moments that you encountered during the process of installing the equipment yourself.