Gas boiler piping in the heating system
After the wall-mounted gas boiler has been installed and the heater is placed on the wall, the first step is to connect it to the heating system. Depending on which model is installed single-circuit or double-circuit, there are different strapping schemes. We will consider the connection process using the example of a wall-mounted double-circuit gas boiler.
Photo 1: Connection diagram of a wall-mounted double-circuit gas boiler
As you know, a double-circuit boiler, in addition to heating, is capable of producing hot water for household needs. Structurally, this is realized by installing one bithermal or two separate heat exchangers. A double-circuit boiler does not produce very much hot water, but it is quite enough for 1-2 points of distribution (for example, a kitchen faucet and a shower).
A modern hinged gas boiler is very compact and already contains inside itself the main elements necessary for the functioning of a forced circulation heating system, such as: a circulation pump, an expansion tank, a safety group. In the heating systems of small private country houses, this is more than enough, but if necessary, you can install an additional expansion tank or another pump.
At the bottom of any hinged double-circuit boiler there are 5 nozzles. They are connected to: supply and return lines of the heating system, supply and return of hot water supply, main gas. The gas inlet is usually centered and colored yellow. All other lines can be arranged in any order, depending on the model of the gas boiler. Therefore, before starting the strapping, it is required to clarify the purpose of each of them in the operating instructions.
Photo 2: Scheme of piping a wall-mounted double-circuit gas boiler
The piping of a wall-mounted gas boiler is carried out with polypropylene or metal pipes. The cross-section of the heating pipes is usually larger than the DHW pipes 3/4 and 1/2 inches, respectively. The heating system is connected to the boiler through the "American" nuts. Ball valves are installed on each line, for the convenience of dismantling the gas boiler without draining the coolant and to isolate the boiler from the heating system, if necessary. To ensure tightness, all connections must be made using plumbing FUM tape or flax.
Coarse filters must be installed in the heating return line and in the DHW supply line. For the convenience of flushing and cleaning, they are also cut off by shut-off valves. Often, in order to increase the service life of the secondary heat exchanger of a double-circuit boiler, a magnetic fine filter is additionally installed on the hot water supply.
Boiler overview - advantages and disadvantages
There are several types of heating boilers: electric, gas and a long-known solid fuel boiler. What type of heating to choose for your home is up to you, based on the area and the availability of certain materials for heating. The most practical and used nowadays is the electric boiler. It has many advantages, but it also has its disadvantages.
The electric type of boiler is characterized by a simple and quick installation at a minimum cost. This type of heating does not require the connection of a gas line or the purchase of firewood, and it also uses energy sparingly. If you calculate in detail all heating costs, you will probably find that electricity is the cheapest source of heat these days.
Gas boilers are much cheaper, but to buy a good quality boiler, you need to spend a lot of money. When buying a boiler, it is best to buy imported ones, they are more practical and of better quality in design. But the installation of heating boilers of this kind is a rather laborious task. During operation, they require constant supervision.
Electric boilers require a constant voltage in the network, therefore, they need at least a stabilizer, and as a maximum, an electricity generator that will provide voltage during power outages. If you look at it, then all the boilers according to the scheme use electric pumps that ensure the movement of water through the heating system. Therefore, a generator is by no means a luxury, but a basic necessity.
Nowadays, wall-mounted double-circuit boilers of heating systems are very popular. Such a scheme is beneficial in that at the same time the boiler provides both heating in your house and is responsible for supplying hot water. It is especially advantageous to use such boilers in a gas-type heating system.
Setting up the regulation of Buderus boilers
All heating units need regular balancing and regulation of parameters. In most cases, a full range of such works is performed during the maintenance of boilers. However, there are situations where unscheduled adjustments are required. For example, after an emergency stop, with a decrease in performance, with repeated errors issued by automation or after a system upgrade.
The specialists of our center are ready to carry out both a one-time adjustment of your heating unit and take it for long-term maintenance. We are authorized to work with the entire Buderus model range, and our craftsmen have all the necessary licenses and certificates.
Boiler regulation includes such measures as: warming up; chimney and safety automation; control and debugging of the ventilation system, fuel supply and power grid. We provide an official guarantee for all types of work.
For more information on all types of services provided by our center, you can call the 24-hour hotline or come to our office.
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Specifications
Consider the operational parameters of gas boilers Buderus Logamax u072 24k:
| Parameter | Value |
| Boiler type | Gas convection |
| Mounting type | Wall |
| Type of fuel | Natural or LPG |
| Efficiency | 92 % |
| Number of contours | Two |
| Primary heat exchanger | Copper spiral |
| Secondary heat exchanger | Plate stainless |
| Maximum coolant pressure | 3 bar |
| Heat carrier temperature | 40-82° |
| DHW temperature | 35-60° |
| Gas consumption | 2.8 m 3 / h |
| Power supply | 220 V, 50 Hz |
Connecting the wall-mounted boiler to the mains
Most modern wall-mounted gas boilers are equipped with sophisticated automation. It controls many processes, turning the heating boiler into an autonomous mini-boiler room, the operation of which practically does not require the intervention of the owner. Obviously, the control unit and the various sensors require a mains connection.
Double-circuit wall-mounted boilers are available in two versions: with the usual socket and with a cable for connecting directly to the vending machine. In any case, they must be powered from the mains through an individual machine. If you purchased a model with a plug, then an individual outlet for a gas boiler should be located next to it, but not under it. This is one of the safety requirements so that in the event of a coolant leak, a short circuit does not occur.
Photo 3: Installing a voltage stabilizer for a wall-mounted boiler
A gas boiler requires mandatory grounding. For these purposes, you can purchase a point grounding kit.It is installed in the basement or next to the house and occupies a small area of about 0.25 m².
Boiler automation is very sensitive to the quality of the supply voltage. With an insufficient level or imperfect sinusoidal shape at the input, the devices quickly fail. To prevent frequent breakdowns and prolong the life of the unit, it is required to connect voltage stabilizers for gas boilers. To avoid stopping heating equipment in the event of power outages, you should additionally purchase an uninterruptible power supply.
What functions does
Wall-mounted boilers Buderus Logamax u072 24k are two-circuit models of gas units.
They are able to simultaneously provide heating of the house (preparation of the coolant for the heating circuit) and prepare hot water for domestic needs. The letter "K" in the boiler marking means "Combined", i.e. double-circuit.
The set of functions of boilers is quite wide:
- The ability to self-detect problems using a self-diagnostic system.
- There is a frost protection for the system.
- All models are adapted to Russian technological conditions.
- The electronic ignition function makes the use of the boiler much more convenient.
- The flame is constantly monitored, when it disappears, the boiler is immediately blocked.
- When installing additional devices, it is possible to control the operation of the boiler via a smartphone.
The functionality of the boilers is plentiful, according to some owners, it is even somewhat redundant.
All possibilities are realized through the control board, the work of which is similar to the actions of the brain of a living organism.
A system of sensors, distributed over all units of the unit, constantly monitors the operation and immediately signals the occurrence of failures, failures or breakdowns.
IMPORTANT!
Buderus Logamax u072 24k boilers are sensitive to power surges, which can cause the control board to malfunction and a series of errors. To eliminate this possibility, a voltage stabilizer should be used to ensure that the power supply mode remains unchanged.
Choosing a chimney for a gas boiler
Any wall mounted gas boiler needs a chimney. Depending on the model, this can be either a traditional chimney or a small horizontal chimney that can be led out directly through the wall of the house.
Photo 4: Installing a coaxial chimney for a turbocharged boiler
In double-circuit boilers with an open combustion chamber, the combustion process takes place with the help of air from the room in which the heater is installed. Typically, such models are installed in specially equipped boiler rooms. For the removal of combustion products, they are connected to traditional ceramic or stainless steel flue gas boilers.
Wall mounted boilers with a closed combustion chamber (turbocharged) use outside air in their work. It is fed into the device through one of the channels of the coaxial chimney. The second channel is used to discharge flue gases into the atmosphere. The coaxial chimney is very easy to install and you can connect a gas boiler to it with your own hands.
We install a gas boiler
As a rule, the installation of heating boilers of this type in a private house requires a separate non-residential premises (boiler room). This is necessary for the removal of combustion products, that is, for the installation of the chimney. The boiler room must be equipped with inlet-flow ventilation. An opening is made under the ceiling for the air outlet, and for its inflow - 30 cm from the floor level. Floor-standing boilers are installed using:
- welding machine;
- drills and drill sets;
- keys, including gas;
- a set of screwdrivers;
- scissors for metal;
- building level;
- tape measure and marker.
Preparation and connection
The mounting surface must be solid and level, and ideally the foundation must be poured. To ensure safety during the operation of the equipment, an iron sheet must be placed on the foundation. The first step is to bring the chimney in and check the presence of traction. Then connect the boiler to the internal heating system: in front of the return pipeline inlet, install a filter that protects the heat exchanger from clogging, and the connection to the water supply must be placed as close as possible to the inlet of the water pipe to the room.
This circuit will ensure high pressure in the system and a constant supply of water.
Shut-off valves (valves) must be installed on the incoming and outgoing water pipes connected to the unit.
This is necessary for dismantling equipment without dumping water. It should be noted that the installation of gas equipment is carried out only after agreement with the supervisory authorities with the involvement of certified specialists of the gas service. Don't skimp on security!
The main stages of setting up Buderus boilers
- Checking and adjusting automation.
This includes not only diagnostics of the control system operation, but also of various sensors, including for weather-dependent operation. - Burner adjustment.
Our craftsmen will not only carry out all the necessary work, but also check the correct selection of the burner for your type of boiler. With the help of special equipment, specialists will adjust the air and fuel supply for optimal combustion. - Balancing hydraulics.
Correct operation of pressure transducers, pump, valves and auxiliary fittings will maximize efficient and safe operation.
Commissioning of boilers by qualified specialists will ensure the correct and safe operation of the entire heating system. The complex of works includes pressure testing during the delivery of the heating unit in separate sections; filling the heating system; tightness control; checking the position of the flue gas baffle plates (not on all models); switching on the burner and control system; flue gas temperature control; checking the flue gas discharge system; control of operation in all modes.
Connection instructions
The boiler is connected after installation in the allocated place.
Wall-hung boilers are mounted on a solid vertical surface with sufficient bearing capacity, or on a special supporting structure - a ramp... Floor-standing units are placed directly on the floor or on a special damping base.
The connection of communications (gas, water, heating circuit) is carried out using special pipes located on the outside of the boiler. Carefully monitor the tightness of the gas pipe connections.
The power supply must be supplied through the stabilizer, all electrodes must be connected in the correct order.
The boiler is filled with water until a pressure of about 0.8 bar is obtained.
This is necessary so that when the heat carrier is heated, the pressure does not exceed the limit value..
After that, the boiler is turned on and the temperature is set. The burner starts up and the system starts operating.
The first connection, adjustment and start-up of the boiler must be carried out by the wizard from the service center.
Download instruction
Download the instruction for the gas boiler Buderus 24 kW.
Connecting a wall-mounted boiler Buderus
The peculiarity of wall-mounted boilers is that it is, as they say, a miniature boiler room. The boiler itself and the DHW circuit, sometimes together with a small storage tank, and a circulation pump and, of course, control automation are enclosed inside one housing. Sometimes a small expansion tank is also placed inside. Naturally, all these units are combined and connected to each other already at the factory.But nevertheless, the boiler itself still needs to be correctly and reliably connected to the gas, chimney and nozzles of the heating and hot water circuits. All connection operations are described in the installation instructions, and theoretically can be performed independently with the necessary skill. But do not forget that during the initial connection and commissioning, you will still need to have a contract with a certified installer on hand.
When replacing a wall-mounted boiler, which at first glance is quite simple, it is also worth remembering that the boiler is equipment of increased danger, and its poor-quality connection can lead not only to failure, but also to much more sad consequences.
Any questions about connecting gas boilers are best left to professionals. There is an unimaginable number of subtleties, which, by the way, are well known to our specialists both theoretically and practically, and if you do not want to face unforeseen heating accidents, we recommend contacting.
The efficiency and safety of the gas boiler operation largely depends on its correct connection to the heating system. This process, also called strapping, consists of several stages. Due to the fact that gas is a very dangerous fuel, some work must be carried out by certified employees of gas services, but a lot can be done with your own hands.
Connecting a wall-mounted gas boiler is a set of works that includes: piping in the heating system, connecting to a gas and electrical network, installing a chimney. In this article we will try to cover each of the stages.
Buderus boiler error 6a how to fix
First of all, you need to exclude the accidental occurrence of an error and simply reset it. If the error occurs again and the boiler does not start, then the problem needs to be solved. The ignition problem in most cases can only be eliminated by a qualified technician. The simplest thing to do is to inspect the combustion chamber and electrodes for contamination and clean if necessary.
If the boiler makes unsuccessful attempts to ignite, visually check that the spark is piercing exactly on the burner, and not somewhere else. If you hear a crackling sound, but there is no spark between the electrode and the torch, the electrode insulation is probably damaged somewhere and needs to be replaced.
The gas valve can only be adjusted by a specialist. Checking the presence of the proper pressure of the network gas can be carried out through the gas stove. If you light all the burners on the stove at the same time, they should work without interruption. If this is not the case, it can be assumed that the incoming pressure is insufficient and it is necessary to call the gas service.
In our practice, there was a case when a crack in the viewing window of the combustion chamber was the cause of a malfunction.
If the boiler ignites, but after a while it goes out, this may be due to a malfunction of the electronic board. You can check by replacing the board with a known good one.
Boiler connection diagrams Buderus
There are standard classic schemes illustrated in the installation instructions for Buderus boilers of a particular series. However, in practice, the schemes are almost always undergoing changes to optimize the wiring, fit the geometry of the furnace room and the relative position of individual units of the heating system.
The heating systems of country houses, although similar to each other, are only in general terms. In reality, however diverse the areas and layouts of buildings are, their heating systems are just as different. Departure from standard schemes can also be caused by:
- connecting the pool heating heat exchanger,
- placing a volumetric buffer tank to which you plan to connect alternative heat sources: solar collectors, a solid fuel boiler or a fireplace insert with a water circuit.
Complications of the circuit cannot be avoided also when implementing the connection diagram for Buderus cascade boilers, when the system is designed to use several gas boilers working together or alternately. A modern approach to the construction of such systems is the use of special units - hydraulic switches that ensure the equalization of temperatures and pressure of the coolant in several circuits connected to it.
Device
Gas boilers of the Logamax u072 series have a design that differs little from the device of most similar units.
The main element is a closed-type gas burner that heats the coolant in a copper primary heat exchanger... The hot coolant, leaving it, enters the secondary plate-type heat exchanger, where DHW is prepared.
After that, the OM passes to the mixing unit, where a certain amount of the cooled reverse flow is mixed in order to obtain the desired temperature. Then the coolant leaves the boiler and is directed to the heating circuit. The transfer of the extract air is provided by a circulation pump.
A turbocharger fan is included to supply air to the heating pad and exhaust smoke..
The operation is controlled and the mode is set by means of a control board with an external display, which shows the current settings or system messages.
How to set up correctly
The operating mode of the Buderus Logamax u072 24k boiler is configured using the control elements located on the control panel. The current values are indicated on the display, the user is only required to turn on the setting mode for one or another parameter and set the required DHW or heating medium temperature.
Also, in accordance with the external conditions, a transition is made to the summer or winter mode of the boiler operation (the heating circuit is turned off or activated). If an error occurs, you can reset it by pressing and holding the Reset button for 5 seconds.
