Trystan Casey
Installing an electric shower pump can be a great way to boost water flow and pressure, enhancing your showering experience. Electric showers are compatible with any water system and rely solely on a cold water supply, making them energy-efficient. Before installation, ensure you have the necessary Part-P Certification and turn off the electricity and water supply to avoid any accidents. The process involves unscrewing the old shower, connecting the new shower pump to the electrical supply, and securing water pipes and electrical wires. After installation, run a bucket of water through the hot and cold pipes to clear debris and prime the pump. Finally, turn on the power supply and test your new shower, ensuring no leaks occur. With proper care, your shower pump can last for up to 16 years, providing a consistent and powerful shower flow.
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What You'll Learn
Safety first: Turn off electricity and water supplies
When it comes to fitting an electric shower pump, safety must always come first. Before you begin any installation or maintenance work, it is imperative to turn off both the electricity and water supplies. This precaution is crucial as it mitigates the potential risks associated with mixing water and electricity.
To start, locate and switch off the electrical supply to the pump. This step ensures that the pump is isolated and poses no risk of electric shock during the installation process. It is always recommended to test the pump with an electrical tester to double-check that it is indeed isolated.
Next, address the water supply. Turn off both the hot and cold-water supplies to prevent any accidental flooding during the installation. It is prudent to have a bucket and towels nearby to catch any leftover water that may spill out when you unscrew the water connection.
Once the electricity and water supplies are securely turned off, you can safely proceed to remove the old shower pump. This step typically involves unscrewing the water connection and removing the electrical wiring with a screwdriver. It is essential to be cautious and meticulous during this process to avoid any potential hazards.
Remember, due to the inherent risks of combining water and electricity, it is generally recommended that shower pumps be fitted by qualified plumbers and electricians with the appropriate certifications, such as Part-P Certification. Their expertise ensures that the installation adheres to safety standards and local regulations.
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Choose the right pump for your shower type
Choosing the right pump for your shower is crucial to ensure optimal performance and efficiency. Here are some detailed guidelines to help you select the perfect pump for your shower type:
Standard Electric Showers
If you have a standard electric shower, you'll need to choose a pump that is designed to work with this system. Electric showers heat water on demand, so the pump needs to be able to handle the specific requirements of this type of shower. Look for a pump that is compatible with your electric shower brand and model. Check the
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Pick the best location for the pump
Picking the best location for your electric shower pump is a crucial step in the installation process. The location of the pump can significantly impact its effectiveness in boosting water pressure and noise levels. Here are some important factors to consider when selecting the installation site:
Accessibility: Choose a location that allows for easy access to the pump for maintenance or repairs. Ideal spots include an airing cupboard or a loft space. If installing in an airing cupboard, ensure the pump is not covered with towels or linen, as this can cause it to overheat.
Proximity to the Shower: It is recommended to install the pump close to the shower or bathroom to minimise the distance the water needs to travel. This helps maintain water pressure and optimise performance.
Height Consideration: Typically, the pump should be installed at or below the level of the water source, such as a cold-water tank. If you have a loft, you can place the pump near the cold-water tank. Alternatively, if you cannot have a raised cold-water storage tank in the loft, you can fit the pump above the cylinder but below the ceiling.
Noise Reduction: To reduce the noise of the shower pump, consider installing noise-reducing accessories such as noise-reducing pads and anti-vibration couplers for the pipes. Placing the pump on a concrete block or foundation can also help minimise noise.
Manufacturer's Guidelines and Regulations: Always refer to the manufacturer's guidelines and local regulations when deciding on the installation location. This ensures compliance with safety standards and optimal performance.
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Connect the pump to the electrical supply
Due to the potential risks of mixing water and electricity, electric shower pumps must be fitted by a qualified plumber and electrician. It is important to ensure that the electricity supply to the pump is switched off before installation.
To connect the pump to the electrical supply, you will need to use a 230v switched spur off a ring main. Do not connect the pump to the supply for the hot water cylinder heater or anything requiring a dedicated energy supply.
If you want to avoid a noisy shower pump, sit it on a 2-inch or 50mm thick concrete block or foundation. Do not screw the pump into the floor.
Fit a 22mm full bore isolating valve onto the cold-water supply pump to isolate the water supply to and from the pump. The pipework should be around 22mm to reduce flow resistance.
Now, reconnect the wires to your new pump. You can then turn on the electricity supply and your shower pump should be good to go.
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Seal the pump and prevent air ventilation
Sealing the pump and preventing air ventilation is crucial for the proper functioning of your electric shower pump. Here are the steps you should follow:
Firstly, ensure you have the appropriate flange for your pipework size. For 15mm connections, a Surrey flange should be fitted to the top of the hot water cylinder. If you have 22mm pipework, an Essex flange is required. These flanges play a vital role in sealing the pump and preventing unwanted air ingress.
Secondly, it is important to minimise air entry into the pump impellors. This can be achieved by using a dedicated flange and creating an anti-gravity loop. An anti-gravity loop is a simple yet effective solution, bending the pipe towards the floor by a minimum of 350mm in 15mm. This loop ensures that gravity works against the entry of air, keeping it out of the pump impellors.
Next, install full-bore isolation valves onto the hot water outlet. These valves can be fitted either before or after making the anti-gravity loop. Isolation valves are essential as they allow you to shut off the water supply to and from the pump, making maintenance and repairs safer and easier.
Finally, flush the pipework to eliminate any debris or residue. Run a bucket of water through the hot and cold pipes, ensuring that the water runs clear. This step not only removes any unwanted particles but also helps to prime the pump, ensuring that air is not trapped inside, which could hinder its operation.
By carefully following these steps, you can effectively seal your electric shower pump and prevent air ventilation, ensuring optimal performance and a consistent showering experience.
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