How to Install a Water Softener with a Boiler – What is The Recommended Method?
A lot of our customers ask how to install a water softener with a boiler and if there is a recommended way depending on their boiler type. A water softener installation is generally pretty straightforward and can be easily done with most boiler systems when carried out by a qualified plumber.
With that being said, there is a key difference depending on whether the boiler is high flow versus combi and gravity-fed. The main rule of thumb is that the water pressure in the home should be around 3-4 bar. In some cases with high flow systems, the pressure may be above this value. In this case, a pressure-reducing valve must be installed before the softener. Without this, the pressure will be too high and will break the water softener. Therefore, it is important to check if you have a high-pressurised system. However, a plumber can easily carry out the installation and check both the water pressure and install a PRV if required.
What Do I Need to Know About Installing a Water Softener?
Although a plumber can generally take care of all the ins and outs of the installation, here are some key considerations that you might want to know about installing a water softener.
Distance to the Stop Tap and Main Water Supply
The water softener should be installed close to the main stop tap and the incoming water supply line. This is to ensure that all water entering the home is softened before it reaches any appliances, including the combi boiler. It must also be installed on the cold water supply line. This is because hot water can damage the internal resin inside the softener.
Physical Space & Accessibility
Before purchasing, you need to ensure there is enough space to install a water softener. It also needs to be installed somewhere accessible – such as underneath the kitchen sink.
Drainage Access
A plumber can usually identify if you have access to a drain, which is necessary for the installation of a water softener system. When a water softener regenerates, it has wastage. Therefore, a water softener needs to be connected to a drain supply for the backwash and regeneration process. It may also be necessary to install a backflow prevention device to prevent any contamination of the main water supply. You don’t need to worry too much about finding the drain - this is something a plumber could help you with.
Temperature Considerations
A water softener needs to be installed in an area that is not exposed to high or very low temperatures. Extreme temperatures can affect the performance and even damage the softener. Ensure ventilation if installed in a confined space to avoid overheating.
Water Pressure and Pressure Requirements
This is very important for flow rate and the water pressure entering the home through your outlets. It is also important when checking the compatibility of a softener with your boiler. Ensure the water pressure is within the recommended range for optimal performance, as mentioned above.
Bypass Valve
When a plumber installs your system, they will often restructure pipework and include a bypass. This will allow water to bypass the softener during maintenance or repair without disrupting the water supply to the home.