Installation of gas boilers Baxi: wiring diagram and instructions for setting up

Amir Gumarov
Checked by a specialist: Amir Gumarov
Author: Alesia Markova
Last update: September 2019

In the list of advantages of Baksi gas heating equipment, the leading positions are held by excellent work, reliability and an extremely high level of operating comfort. Boilers of this brand are deservedly recognized by the world and domestic consumers. Practical wall models are most in demand.

The responsible manufacturer warns: installation of gas boilers Baxi must be performed by representatives of gas supply companies. However, information on the specifics and stages of work is needed by all owners of the units. Familiarize yourself with them will not hurt to monitor the work of hired contractors and further operation. Do you agree?

We will talk about how to install gas-processing heat generators from Baxi S.p.A. In our article, we present technological nuances and tuning features. Here you will find recommendations from experienced gas workers, following which will relieve disturbances in work and dangerous situations.

Baxi gas equipment specifics

In the range of trading offers offered by the buyer from Baxi S.p.A. There are floor and wall units. The former are purchased for autonomous heating in spacious country houses, industrial or commercial facilities. The second are successful with the owners of apartments, small cottages and private houses of small area.

Both wall and floor models of this brand are produced with one or two heat exchangers. Each heat exchanger is designed to heat a single circuit environment. Single-circuit boilers are designed to prepare the coolant, double-circuit - serve the heating system and provide hot water to the mixers.

In the range of boilers from Baksi there is atmospheric and turbine units. Atmospheric models are equipped with an open combustion chamber, turbine models with a closed one. The former are somewhat cheaper and easier to operate, the latter are more expensive and more complicated, but much safer, and therefore more popular among consumers.

Devices for monitoring work and protection

Gas boilers that are in demand on the market are equipped with the following systems for regulating the operation of the heat generator and ensuring safety:

  • Safety thermostat. A device with a sensor that responds to excess water heating. If it fixes the temperature above the set limit, the boiler is blocked. Disabling it is prohibited.
  • Traction sensor. A device that fixes the temperature of gas processing products removed from the boiler. If they are above 90ºС, the electronic board shuts off the gas supply. Do not disconnect under any circumstances.
  • Flame ionization sensor. An electrode that monitors the gas supply to the burner, which detects a violation in the supply of blue fuel or partial attenuation of the burner. In case of detection of dangerous situations, the system blocks the boiler.
  • Pressure switch for medium flow. A system that allows you to activate the burner only if the pressure of the medium to be processed exceeds 0.5 bar.
  • Frost protection. A device that automatically starts the boiler when the temperature drops to + 5 ° C and makes it work until the coolant for delivery to the supply pipe is heated to + 30 ° C.

Protection against the formation of ice plugs in a system filled with coolant or sanitary water is not disabled even when all other electrically dependent systems of the unit are disconnected from the power supply. The bipolar shutdown device allows you to leave it in working condition if the boiler is not used for some time.

In addition, the boilers are equipped with systems providing post-circulation of the heated medium. Those. after stopping the burner coolant three more minutes will run along the heating circuit. There is a function that makes the circulation pump periodically turn on for 10 minutes if the boiler has not been used for more than a day, and many more useful innovations.

To read the ambient temperature background, the units are equipped with indoor and outdoor sensors. With the help of thermostats to which they are connected, the owners of the treated rooms select the minimum and maximum temperature limits. In accordance with these data, automation will start and stop heating of the coolant.

Specialized Bucksi aggregate systems

An excellent option, introduced technologically and constructively, is considered the possibility of adjusting the gas valve of Baxi boilers. Using the screw available on the device, you can adjust the power, focusing on the content of CO2 in the flue channel.

For accurate calibration of the gas valve, the equipment manufacturer in the technical documentation for the products attached table. It indicates the operating parameters of the unit with minimum and maximum power, as well as with the corresponding fan speed. The adjuster just needs to turn the screws until the desired value appears on the display.

Gas flow setting
The gas valve is calibrated using function 304, which will alternate with a “%” on the display. Increase and decrease power in increments of 1%

The functional has an extremely useful function - self-cleaning of chimney channels. It is produced when the device is operating at full power. Spontaneous removal of combustion products allows less frequent chimney cleaning. In addition, it guarantees the stability of the system and the security of users.

There is a function of degassing - removal of air from the system, which inevitably occurs when the heating circuit is filled with water. They use it before the first start-up, and also after stopping the boiler and draining the water for a warm period, when there is no need for heat supply.

Heating scheme with a wall-mounted boiler Baksi
The heating scheme, organized on the basis of a Baksi boiler, can include remote storage water heaters and solar panels

In addition to a good set of functions, the ability to connect solar panels, implemented in almost all models of this brand. The boiler still included in the heating circuit can be supplemented remote boiler, for which nozzles are provided, and an additional pump.

Subtleties of installation and nuances of tuning

We have already noted that the installation, connection, first start-up and adjustment of the operating parameters of the Baksi gas boiler should be handled by a master from the organization with which a contract was signed for the supply of blue fuel and for the maintenance of gas processing units. After applying our own efforts to implement the above steps, the opportunity to use the guarantee is lost.

All steps of the installation cycle are documented. The owners of the boiler are given papers that indicate who installed what and what they connected. If a malfunction is detected, the contractor will deal with it. When factory defects are detected, which is extremely rare, the gas service solves all the problems of replacement and repair.

Note that these gas heat generators can be installed in heating circuits with any heating devices. Do not constitute an exception and warm floor, but for their operation, the boiler power should be adjusted to 65ºС at the entrance to the feed pipe. They are suitable for one- and two-pipe heating circuits, for tee and radial options.

Steps for connecting the boiler to communications

We list in stages what the gas industry workers must do during the installation and connection of the Baksi-type gas boiler.

Conventionally, the entire cycle of work can be divided into three main parts, these are:

  • Preparation of building structures and communications. Strengthening structures as needed. Laying lines for connection, if necessary.
  • Mounting the boiler on a wall and connecting to utilities. Purely mechanical work, requiring exact adherence to the scheme and recommendations of the unit manufacturer.
  • Performing the first run and adjusting operating parameters. The implementation of the first launch is the responsibility of the representatives of the gas company. The user can set the settings himself.

All actions are carried out in a thoroughly thought out and clearly worked out by the boiler manufacturer order.

Wiring diagram for the installation of a condensing boiler
The manufacturer of the equipment for heating the coolant and hot water attaches the wiring diagram in the configuration to the unit. When connecting communications, you must strictly follow the instructions

The preparatory period includes:

  • Inspection of the premises to confirm the possibility of installing equipment using gas.
  • Drawing up a contract for the performance of work with the application of a gas boiler connection diagram with the Baksi logo and an accurately calculated estimate. It should indicate the rates of work and the cost of materials purchased by the company for the installation of a thermal energy generator.
  • Cleaning the used heating system and hot water from mineral deposits and contaminants deposited on the walls of pipelines and devices during operation. It is made by any available chemical agent.
  • Laying communications to the installation site of the boiler. Only heating and gas supply lines are led to single-circuit ones, and heating, gas and water supply branches to double-circuit ones.
  • Installation of shutoff valves on each communication line. They are needed to shut down the unit in case of repair, accident, replacement.
  • Mounting a dirt filter on the return pipe of the heating system. It is required to collect mineral sediment, which could remain after cleaning and will form when water is heated.
  • Wiring a separate power line. It is used to ensure that no other electrical equipment is connected in parallel with the device, which creates a risk of short circuit with fire hazard.

Connection of communication systems is made with the mandatory use of gaskets. All work must be carried out in accordance with plumbing standards.

The optimal location of the electrical outlet relative to the gas boiler is 30-50 cm from the housing. Its installation and laying of the power supply branch is carried out in accordance with the PUE. In addition, equipment is needed necessarily groundusing a three-wire cable with grounding wire.

Connecting the Baksi boiler to power
Since the Baksi requires a power supply to operate the hot water heater and heat carrier, it is necessary to lay a separate power line to the boiler installation site. It should pass at a distance of 30-50 cm from the body

The list of measures for installing the boiler includes:

  • Mounting the boiler. It is made on a wall with the bearing ability sufficient for this. The unit is fixed with anchor bolts, if necessary, close the wall with a non-combustible finish, if it is made of combustible materials.
  • Connection of pipelines to the boiler. It is carried out in accordance with the scheme attached by the manufacturer to the data sheet.
  • Assembly of the chimney. The connection of chimneys to the Baksi boilers is carried out only with fasteners supplied by the unit manufacturer.

To turbine models equipped with a closed combustion chamber, either coaxial pipeor a regular pipe coupled with an air supply pipe to a closed burner. The first option is simpler, but more expensive in terms of acquiring a coaxial system. However, it is not a fact that the installation of two channels for the supply of air and smoke exhaust will ultimately be cheaper.

To atmospheric models with an open combustion chamber, a conventional chimney is connected. The output of the products of processing of blue fuel is made either through the wall into the street space, or into the collective chimney of an apartment building.

Condensate chimney
Chimneys to gas boilers with the Baksi logo are connected using the fasteners that are available with the device. Turbine models are equipped with coaxial types of chimneys, atmospheric ones are equipped with ordinary ones, which are recommended to be supplemented with condensate collectors

The chimney elbows allow this duct to be led out in any direction through the wall. Note that through the walls lead mainly to high-rise buildings, the number of storeys of which does not exceed five levels. In private homes, it is preferable to build vertical smoke ducts.

Upon completion of the installation work, they proceed to the first start-up and setup.

Launch and commissioning activities

For the first start-up, the gas boiler and the circuits it processes are filled with the medium transported through them. Unlike most wall-mounted models that can only heat water as a coolant, Baksi units can be filled with antifreeze - an aqueous solution of propylene glycol with antifreeze additives.

Process coolant filling the boiler and the heating circuit are made through a pipe located at the bottom of the unit. After filling, bleed air, then, if necessary, replenish the volume of coolant in the same way.

Preparing to set up the Baksi boiler
After connecting the boiler to the communication branches, it and its associated systems are filled with water. Then they are connected to the mains and open access to gas. Now you can customize

The commissioning activities are preceded by the following actions:

  • Checking the pressure in the system. It should correspond to the recommended values ​​of 1-1.5 bar.
  • Connecting the boiler to power supply.
  • Gas supply to the combustion chamber, for which it is necessary to open the yellow valve at the gas inlet in front of the boiler.

It happens that when you turn it on for the first time, the unit is blocked due to the presence of air pockets in the pipes. In the case of Baksi boilers, there is no need to manually bleed the plugs, the system itself will remove them. It is only necessary to press the start button again and hold it for 2 seconds until the burner is activated.

Operating parameters are set using the electronic panel located on the front side of the boiler. To select a heating mode, there is a button with a stylized battery, for domestic hot water - a button with a tap.

Set up the operation of the Baxi gas boiler in accordance with a single algorithm:

  • Select the button responsible for heating or preparing sanitary water.
  • Use the +/- buttons to set the appropriate mode.
  • Press the Power button so that the electronic control remembers the set parameter.

If the performance task procedure is successful, the display shows “MEM”. This means that the boiler will work, observing precisely these settings until the user decides to make changes.

The simplest steps for setting up the boiler
The basics of setting the boiler will be mastered by a completely ignorant performer in the intricacies. You just need to select a function and then a value, increasing or decreasing the initial indicator

Reluctance to remember the just selected parameter must be confirmed by pressing the “i” button. The system that accepts the rejection of the changes will inform about it by the inscription on the display “ESC”.

In order to select and set the characteristics of the boiler, the buttons hold for 6 seconds. To display current information about the operation of the unit on the button "i" you need to press 5 seconds. If the “INFO” function is activated, the display shows “A00”, instead of which the temperature at the outlet of the heated coolant boiler appears.

Then you need to check the dynamic value of the gas pressure at the inlet to the gas burner. When consuming trunk fuel, it should be 20 mbar. When using a balloon mixture with a predominance of propane, the dynamic pressure value should be 37 mbar. Measurements are carried out by connecting a manometer to the gas valve fitting.

Next, adjust the maximum and minimum pressure values ​​using the regulator. In this case, again, they use a gas valve, to the nozzle of which they connect a sensitive pressure gauge that records changes in mbar. The values ​​are selected according to the data given in the table by the manufacturer. They depend on the model and the type of gas to be processed by the boiler.

Setting the required gas supply pressure
The gas pressure performance is adjusted in the simplest way - by turning the adjusting screws. The pressure value depends on the gas mixture used.

The gas heaters of the heat carrier and hot water from Baksi proposed to the consumer were initially set up for the processing of main gas. If the boiler has to “work” in an autonomous system with a group of cylinders or a gas tank, then before performing all of the above tinctures, nozzles are replaced. And then change the voltage on the modulator with the choice of parameter F02.

Recommendations for reducing operating costs

If all operational settings are made in accordance with the table given by the manufacturer, then the equipment will consume energy very economically, generating the necessary heat in the volume necessary for the owners.

To do this:

  • For systems with radiators or thermosiphons, select the temperature of the coolant at the outlet of the boiler + 60ºС. It is worth increasing it only if during the operation of the unit comfortable heat in the room was not received.
  • Adjust the temperature in accordance with the manufacturer's instructions and the purpose of the room. For heating bedrooms and other rarely visited rooms, the heating temperature can be selected below average.
  • Do not exceed the temperature background recommended by the manufacturers of heating devices included in the circuit.
  • Use an indoor and outdoor temperature sensor that detects an increase / decrease in temperature. The associated thermostat will independently start / stop the boiler as needed.
  • Set the temperature of the coolant by the clock using a timer.At night, for example, it can be lowered by 3-5 ºС.

It should be remembered that increasing the temperature in the treated room by only 1º, we increase the costs immediately by about 6%.

In order not to constantly change the temperature settings of the coolant in the autumn-spring difficult period, it is better to put a street temperature sensor. If you do not come across a suitable model or there is no money to buy the original, you can build such a homemade appliance here:

In the event of a prolonged absence, the boiler should be disconnected from the power supply, but the frost protection system should not be turned off. It is turned off only for the summer period, during which they refuse the heating function, completely turning off the single-circuit model and transferring the dual-circuit version to the supply of hot water.

In order to save on heating, do not close the radiators with screens and heavy curtains. They will interrupt normal air circulation and force the boiler to run at full capacity for no apparent reason.

Also, the equipment manufacturer does not recommend micro-ventilation in rooms, keeping transoms constantly ajar. It is better to open the window wide open and ventilate "in one gulp" than for a long time artificially lower the readings of the room temperature sensor. Proven in practice, which is more economical.

When using the water treatment function, it is better to initially select a temperature that is comfortable for use, not counting on mixing heated and cold water in the mixer. Believe me, thanks to this decision, the thermal energy generated by the generator will not be wasted. In addition, limescale will not settle on the inner walls.

Conclusions and useful video on the topic

The stages of installation, connection and setup of the boiler from Baxi will be clearly demonstrated by the following video:

Information about the installation process of the Baksi wall-mounted boiler and the rules for connecting it are needed to control the invited performers. Unfortunately, not all of them please with a conscientious attitude to work and knowledge of all the nuances. If the owner of the gas-using unit takes care of its own safety and the normal operation of the device, the information presented by us will not be superfluous.

Want to talk about how to install and set up a boiler with the Baksi logo in your house or in the country? Do you have useful information on a topic that will be useful to future owners of the unit? Please leave comments in the block form below, post a photo on the topic of the article, ask questions.

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