Installing a wall gas boiler with your own hands

A growing number of homeowners are looking for cost-effective ways to heat their homes as energy expenses keep rising. Because wall gas boilers are dependable and reasonably priced, installing one can be an alluring option. Although this DIY project may seem difficult, even someone with only rudimentary technical knowledge can complete it with the correct tools and a thorough guide.

It’s critical to comprehend the advantages of a wall gas boiler before getting started. These systems offer a reliable source of heat and hot water in addition to being space-efficient. Wall-mounted boilers are small and can be installed in smaller spaces such as kitchens or utility rooms, in contrast to large traditional boilers. They are a great option for residential use because of their effective and silent operation.

But installing a gas boiler on your own requires careful planning and attention to safety regulations. Every step of the process, from selecting the ideal model to meet the heating requirements of your house to making sure it complies with regional building codes, needs careful thought. The installation process can be streamlined by being well-prepared, which includes gathering all required tools and information in advance.

The instructions in this guide will help you install a wall gas boiler on your own. Everything will be covered, including where in your house to put the gas and electrical connections and how to do it safely. Remember that although do-it-yourself projects can be rewarding, there are risks involved. Therefore, it’s important to approach this task cautiously and with respect for safety procedures.

Improving the heating efficiency of your house can be done practically and economically by installing a wall-mounted gas boiler on your own. To guarantee correct installation and operation, this do-it-yourself project needs to be carefully planned and adhered to safety regulations. Homeowners can obtain a dependable heating solution by selecting the model that best suits the size and requirements of their house, setting up the installation site, and connecting the boiler to the gas and water lines. To make sure the installation complies with safety requirements and functions effectively, it is imperative to review local building codes and perhaps engage a certified professional for an inspection. This method not only maximizes domestic heating but also aids in efficient energy cost management.

Placement of a heat generator – requirements for the room

Installing gas heating equipment is far simpler than obtaining permits and starting it up. We propose to take into consideration the first problem, which is the independent installation of a gas boiler mounted on the wall in a home or apartment. In the directions for installing a double-circuit heat generator, we cited the algorithm for obtaining technical conditions and project development.

The following are the standards for the space where the gas heating unit should be placed:

  1. The heater cannot be placed in living rooms and the bathroom. The hinged boiler is allowed to be placed in the corridor, in the kitchen and other non -residential premises on any floor, outer extension or separate boiler room.
  2. If the wall heat generator works on a liquefied propane-butane mixture from cylinders or a gas tank, it cannot be installed in the basement of a private house.
  3. The minimum acceptable ceiling height is 2 m, volume – 7.5 m³. If the room has a water heater with natural gas, then the requirements are tightened: the height of the ceilings should reach 2.5 m, volume – 13.5 m. cube.
  4. The room should have windows overlooking the street. The minimum sizes of the glazed part are calculated as follows: the volume of the room is multiplied by 0.03, we get the area of the translucent structure in m².
  5. When the furnace device, supply and exhaust ventilation is necessarily provided. Within 1 hour, the air of the room should be updated three times (3-fold air exchange). Add the air consumed by the burner to burn the fuel to the volume of the influx. A ventilation window is made in the kitchen.
  6. The minimum distance from the front panel of the suspended boiler to the wall or other items is 1250 mm (passage width).

To be clear. You can have a gas heater in the kitchen that can heat up to 60 kW and up to 150 kW in other interior spaces. The equipment in the external boiler room can produce an infinite amount of heat.

The aforementioned guidelines apply to both wall-mounted and floor-mounted heating units with open and closed combustion chambers. The boiler installation location must be decided upon in consultation with the engineer working on your project. Considering the position of the gas pipeline, the designer will advise you on the best place to hang the boiler.

You can learn more about the specifications for the gas boiler house from our expert in the video:

How to install a wall boiler correctly

Unpack the heat generator and make sure it’s all assembled before installing. Verify if the full-time fasteners are appropriate for your wall type. For instance, special mounts are required beneath aerated concrete; regular dowels are insufficient.

We adhere to this work protocol:

  1. Sovele the contour of the heating unit on the wall. Make sure that technological indentations from building structures or other surfaces are observed: 0.5 m from the ceiling, from below – 0.3 m, on the sides – 0.2 m. Typically, the manufacturer gives the scheme with the dimensions in the instructions for operation.
  2. For a turbo boiler with a closed camera, prepare a hole for a coaxial chimney. We drill it under a slope of 2-3 ° towards the street, so that the resulting condensate follows. The process of installing such a pipe is described in detail by us separately.
  3. A paper installation template with the intended holes is included with the heat generator. Attach the sketch to the wall, align it using the construction level, fix the scheme with tape.
  4. It is better to immediately tap the drilling points. Remove the template and make holes with a depth of 50–80 mm. Make sure that the drill does not go aside, this happens on brick partitions.
  5. Install plastic plugs in the holes, screw the suspended hooks to the maximum depth, using the pliers. Together with the assistant, carefully hang the device.

A crucial aspect. The norm dictates that you must protect the wall from fire when installing a wall cauldron in a wooden house. As seen in the picture, there is a roofing steel sheet attached that protrudes for 100 mm between the unit’s back panel and the flammable structure.

When creating openings in a wooden log wall, ensure that the mount is situated on the log’s crest. Screw hooks are fastened into the tree directly, avoiding plastic obstructions.

Grinding circuits of the heating unit

A wall gas boiler fitted with a turbocharged closed combustion camera is connected to three engineering networks located in a country house or apartment:

  • heating;
  • electric;
  • smoke -haired.

Open chamber atmospheric heat generators that draw air from the room for combustion are connected to a conventional chimney. To prepare household water (DHW), if you must use a single-circuit unit, add one more connection to an indirect heating boiler.

First, think about the possibility of using the boiler to warm floors or the radiator heating system. For strapping, the following pipeline reinforcement will be needed:

  • Ball valve with an internal thread ¾ inch and American – 5 pcs.;
  • Normal tap ¾ per line of recharge/emptying;
  • filter-gryazevik tap;
  • filter for gas pipelines (if the heater is placed far from the gas meter or in the apartment);
  • Connective fittings – according to an individual scheme;
  • Cable with 3 copper veins with cross section 2.5 mm² of VVG brand or similar;
  • 2-pole circuit breaker.

Furthermore. If the system’s coolant capacity surpasses 70 liters, an extra extensor tank will be required. Purchase two additional ball valves for drainage and cutting off in order to install the tank.

We follow the standard scheme below when strapping a wall boiler. After screwing down the taps on the American apparatus, we connect the pipes. The heating return has mud applied to it, and a crane in front of it makes it possible to clean the filter grid without draining the system. If the boiler needs to be replaced or overhauled, it will also remove it.

Four helpful pointers:

  1. It is more convenient to fasten the taps to the wall heat generator in the removed state, that is, before the attachment of the device to the wall. Pre -remove the handles so that they do not interfere with the winding valves.
  2. The mud is always placed horizontally, with a cork down.
  3. The external expansion tank is connected to the heating reverse. In front of the tank, put a cutting valve, a tee and a drain valve. It’s easier to remove the tank (for example, for the purpose of replacement).
  4. Cut the taps with the tap at the lowest point of the reverse pipeline.

Connecting to indirect heating

Numerous manufacturers offer wall-mounted gas heaters that come with boiler connection nozzles. Here, there won’t be any problems: we connect the water heater’s heat exchanger and purchase two ball valves ½" with Americans. Additionally, an overhead thermostat with a temperature sensor housed in a unique boiler sleeve is required. From there, we run an electrical cable to the boiler’s matching terminals.

In the event that an indirect water heater fitting is not available, we buy a three-way valve with an electric drive. The following scheme is followed when connecting the wall unit to the boiler:

How such a plan operates

  1. Heating the DHW tank is always a priority. After the first launch, the boiler will first heat the water in the boiler, then switch to heating.
  2. As the water cleansing, the container cools, the sensor fixes the temperature reduction, the thermostat closes the chain. The controller of the boiler gives a signal to a three -way valve, which switches the entire coolant to the coil of the water heater.
  3. When the water in the container heats up to a given temperature, the thermostat will tear the electric circuit, the valve will again direct the coolant in the battery or the contours of the warm floors.

An important nuance. Depending on the volume, the boiler loads in 15 to 30 minutes after it automatically switches to full power to heat the DHW tank. When the unit returns to the heating mode, its performance is decreased based on your preferences.

How to connect 2 boilers – wall gas and solid fuel

A parallel connection technique is applied in this instance. The issue at hand is distinct: synchronizing the operation of heat generators to ensure automated startup and shutdown. We provide a standard circuit that has an armostat, two check valves, and a room temperature setting.

How it operates:

  1. TT-boat is the main one. While it maintains the temperature in the premises, the gas boiler is in standby mode.
  2. After the burning of solid fuel, the temperature of the coolant at the supply decreases. When it falls below 40 ° C, the thermostat will stop the circulation pump of a wood heat generator.
  3. At the same time, the air temperature in the rooms is reduced. Когда она достигнет установленного порога (например, 20 °C), комнатный терморегулятор замкнет цепь и запустит в работу котел газовый.

Likewise, two additional wall-mounted heaters—one gas, one electric—can be connected. Use the primary-second rings scheme (picture) if you need to connect an indirect boiler, radiators, and warm floors to two heat sources.

Joining the power supply

With its electronic control unit, circulation pump, and security group, the wall water heater functions as a miniature boiler room. The boiler cannot just be added to the first outlet to fall; instead, as the diagram illustrates, a separate cable power line that is guarded by a two-pole automaton should be installed.

Installation and setup advice:

  1. Put the cable inside the plastic corrugated pipe.
  2. Think about the track so that the wiring is not under the pipes of water supply or heating. Eliminate water in the event of an accident or discharge from the safety valve.
  3. Be sure to connect the third cable core to the ground circuit. By the way, steel pipes in the apartment cannot serve as such.
  4. It is better to organize the boiler power through the "uninterrupted" – Block IBP. Otherwise, after turning off the light, you risk being left without heat in the house.

Suggestions. A phase that is installed incorrectly can cause certain wall-mounted foreign boilers to "act up." Try adjusting the locations of the phase and zero wires if, after turning it on, the device still refuses to start.

Step Description
1. Choose the Boiler Select a wall-mounted gas boiler that fits your heating needs and budget.
2. Prepare Installation Site Ensure the wall is sturdy and check for existing connections (gas, water, electricity).
3. Mount the Boiler Secure the boiler on the wall using the mounting bracket and screws provided.
4. Connect Gas Supply Connect the gas pipe to the boiler. Use sealant for gas-tight joints.
5. Connect Water Pipes Attach inlet and outlet water pipes. Check for leaks.
6. Electrical Connections Make electrical connections according to the boiler"s manual.
7. Test the Boiler Start the boiler and check all functions for proper operation.
8. Safety Check Ensure all fittings are secure and there are no gas or water leaks.

Self-installing a wall gas boiler can be a satisfying do-it-yourself project that not only improves home comfort but may also lower heating expenses. But it’s crucial to understand the risks and complexity involved. An apparatus that works with gas and combustion needs to be installed correctly to guarantee the boiler’s effective and secure operation.

Learn all about the building codes and regulations in your area before attempting any installation. Ensuring safety is the primary goal of adhering to these standards; legality is not the only consideration. Serious risks like carbon monoxide poisoning and gas leaks can result from improper installation. Therefore, even if you handle the majority of the work yourself, it may be prudent to seek advice from or employ a certified professional who can inspect the installation afterwards.

It’s crucial to arm yourself with the appropriate knowledge and equipment regarding the particular needs of your boiler model. The manufacturer’s handbook, which provides detailed instructions and specifications, is a treasure trove of knowledge. This guide should serve as your blueprint; if needed, you can supplement it with other online resources or tutorials. Keep in mind that each model has subtle differences, so what suits one model may not work for another.

Lastly, just as crucial as the installation procedure itself is the ongoing maintenance you should do on your recently installed gas boiler. It will function effectively and safely for many years to come if regular inspections are performed. By taking preventative measures, you not only protect your house but also get the most out of your boiler investment. When your boiler is properly maintained in addition to being installed correctly, energy efficiency is maximized.

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Sergey Ivanov

I like to help people create comfort and comfort in their homes. I share my experience and knowledge in articles so that you can make the right choice of a heating and insulation system for your home.

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