Gas wall heaters are a new generation of water heaters that entered the market after tank models. In this type of water heater, water is heated only when needed and a lot of gas consumption is saved. The way these water heaters work is that as soon as the hot water tap is opened, the water heater starts working and the water is heated according to the demand. If you also plan to use this type of water heater, it is better to first familiarize yourself with the complete guide for installing a gas wall-mounted water heater.
Installing and repairing a water heater is an important and costly task. For this reason, if you do not have any information about gas piping, water and electricity, it is better to get help from experts in this field. Because in case of failure in any of the mentioned cases, you will incur many risks and costs.

Prohibited places to install gas wall water heater

Gas water heater is a very practical device and is used in different environments. Before starting the installation, note that this water heater should not be placed in certain environments. In the following, we have introduced these environments to you.

Closed environments where there is not enough oxygen.
Inside the bathroom, due to water vapor and lack of oxygen
In the basement of the house
Small rooms, toilets, storage and…
In the kitchen, especially when there is no proper ventilation.
The space near the gas stove

How to install a gas wall water heater

To install wall-mounted gas water heaters, you must follow important safety tips to avoid the least risk.

Gas pipeline upgrade

The old water heater system is different from the new wall type. In addition, the amount of input gas they need is also different. Therefore, if you recently plan to replace the old water heater with a new type, it is better to check the gas pipes and the amount of gas entering them with the help of an expert, so that the pipes can be changed and enlarged if necessary. This should only be done by licensed professionals.

Moving the old water heater

To install a gas wall water heater and replace it with an old water heater, you must do the following steps:

First, turn off the water flow.
Completely disconnect the gas and electricity inlet valves and disconnect them from the water heater.
If there is water in the tank, drain it with a special hose.
Finally, remove the water heater from the environment to provide conditions for installing a new water heater.

Installation of a new water heater

According to the instructions in the complete installation manual of the gas wall-mounted water heater, the water heater must be installed in the right environment and at a suitable distance from the walls, windows, doors and surroundings. These water heaters need a chimney, so during installation, make sure that there are conditions for installing a chimney in the environment.

Installation of gas pipes

In the next step, the gas pipes must be installed correctly to provide the required gas for the water heater. It is better to use standard iron pipes for this purpose. You can first provide the required length of pipes and connections and then install the pipes with the help of a specialist in this field. Be sure to turn off the main gas before working. Cut and collect the old water heater pipes if you don’t need them.

Installation of water pipes

After installing the wall-mounted gas water heater and gas pipes, it is time to install water pipes. The installation of these pipes should also be done according to the manufacturer’s instructions. Hot and cold water lines are connected separately. If copper pipes are used in this field, you need to do soldering for installation. Install the pipes correctly and finally test the water supply system.

Installing the drain valve

The drain valve is an important part of the water heater. When the water is too hot, this valve is opened to drain the amount of hot water. This piece is also used for water heater repair and cleaning. After installing the valve, check for leaks and then connect the gas. If the installation was done correctly and the drain valve is working properly, close the gas valve again.

Installation of exit valve

This type of water heater needs a space for gases to escape. Different types of water heaters may require different chimney models. For this purpose, first you need to make a suitable hole on the top of the water heater in the wall with the help of a drill. Then install the chimney pipe correctly. Pass one end of it through the hole in the wall and connect the other end to the place installed above the water heater.

With the completion of the above steps, the installation of the gas wall water heater is completed and ready for use. It is better to open the hot water until the end so that the hot water comes out of them. You can also insulate the hot water pipes to prevent the water from cooling down during transit.

Safety tips for installing a gas wall water heater

Observe the following safety measures when installing a gas wall water heater to create the least risk for you.

Use a separate chimney for the water heater.
Periodically check the chimney and make sure that its ducts are open.
Use standard hoses and special fasteners for installation.
Use the gas governor to control the inlet gas pressure.
Observe all safety measures and install the water heater according to the mentioned instructions.
Do not use hose pipes or weak pressure.