How to install an AccuBoost accumulator tank

For homes that suffer with low mains water pressure or flow, installing an accumulator tank can be an easy and effective way of improving the water performance of taps, showers, baths, and other outlets across the house.

Here, Ken Vance (@SalamanderKen), Training Manager at Salamander Pumps provides a step-by-step guide on how to install one of Salamander’s AccuBoost accumulator tanks.

For more in-depth information on AccuBoost accumulators and their installation visit where you can access installation guides, online training courses and product information.

1. Select the location

AccuBoost tanks can be installed in various locations, including kitchen cupboards or in the garage, anywhere it can be connected to the mains water supply.

Where possible pumped models should be fitted as the first point of contact after the stop tap. However, where this isn’t possible due to space constraints the pump can be fitted after the stop tap, and the vessel can be located remotely.

Unpumped models can be ‘teed’ in anywhere in the system, but only outlets that are after the non-return valve will see the benefit.

It’s important that the accumulator and pump are easily accessible, should maintenance need to be carried out. The installation location must also have adequate thermal protection and ventilation to protect the AccuBoost tank, pump and associated pipework from extreme temperatures.

2. Unbox AccuBoost

Unbox the product and read through the installation guide. The installation guide should always be your first port of call, it provides you with a pre-installation checklist, product descriptions, technical specifications and step-by-step instructions.

3. Turn off the mains

Turn off the home’s mains water supply and then drain down the system.

4. Make provision for the mains cold feed

Once drained, make a provision for the cold mains to be taken to the AccuBoost tank.

5. Install valves

Make sure to install a double-check valve then a pressure reducing valve before the AccuBoost unit. If you are installing a pumped tank, a maintenance bypass should be fitted. If you are installing an unpumped tanked, you must install a full bore isolation valve.

An inline filter is also recommended for unpumped models after the stop tap, to allow the system to retain the built-up pressure.

6. Create a connection to the mains

AccuBoost accumulators come fully built, with the exception of the 450 litre pumped unit, meaning little or no assembly is required.

If you’re installing a pumped AccuBoost, create a connection from the mains to the pump inlet, and a connection from the AccuBoost pump outlet to the system.

For unpumped AccuBoost models, create a direct connection between the mains supply and the AccuBoost tank.

7. Set the pressure

For pumped tanks, the precharge air pressure of the tank is pre-set. However, unpumped models need to be set at 1.5 bar less than the natural mains pressure.

8. Turn the stop tap on

Now, turn the stop tap back on and open the isolation valves to allow water in and out of AccuBoost.

For pumped models, you will also need to plug in the pump and switch it on.

9. Results

The mains water pressure and flow around the home should now be noticeably improved.

Before AccuBoost installation:

After AccuBoost installation:

For more information on Salamander’s AccuBoost range visit:

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