How to install a single impeller pump

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They're not exactly cheap but they're the sort of thing you should be looking at. Artisan Bathrooms , 19 Feb Joined: 3 Sep Country:. Select the supplier or trade you require, enter your location to begin your search. Please select a service and enter a location to continue You must log in or sign up to reply here.

Show Ignored Content. Related Threads. Replies: 6 Views: Single Impeller Pump to increase gravity fed hot water pressure to taps? Replies: 15 Views: 12, TimS15 30 Apr Replies: 2 Views: RickG 21 Dec Single or twin impeller shower pump? Replies: 2 Views: 2, It is important to note that excessive air will damage the pump. With this in mind use a dedicated flange to connect to the hot water cylinder.

A non stop Essex flange will give the least resistance and is best for 22mm pumps, if you are fitting a 15mm pump a Surrey or S-Flange will be sufficient. Assuming you have followed this advice then you will only need to fit 1 separate full bore isolating valve to the supply pipe as your pump will be within reaching distance of the cylinder.

Once you have connected the supply pipes to the pump it is now time to prime the pump. Firstly, with the electrical supply off run one bucket of water out of both the hot and the cold sides of the pump until the water has run clear and there is no apparent air. You can now run the pipes to the rest of the hot outlets in the house, first you will need to disconnect the old pipe from the hot water cylinder, this will be located off of the vent or expansion pipe see Drawing , it is extremely important to keep the vent pipe functioning, so if there are any hot supplies that come off of this pipe you will need to disconnect them all, The disconnected supply pipes can now be connected back to the hot outlet of the pump.

Please Note: If the pipes from your pump to an appliance run back up to the loft then you will need to fit air vents in the highest pipe position and a non return valve fitted to the hot outlet side only. Now that you have reconfigured your pipes as per the diagram make sure that they are all flushed as best as possible. Install Whole House Pumps. Quick Links. Privacy Policy. Most shower valves will mix temperature well when a balanced supply is achieved but if you have a unbalanced supply e.

I am basing this installation how to on a Salamander 2. Cold Water Storage. First rule of thumb is to make sure that you are storing enough cold water for the shower, liters or 50 gallons is normally adequate for most shower applications.

If you intend to run more than 1 bathroom then you need to allow 50 gallons liters for each bathroom and 30 gallons liters for each shower room or en-suite. The best position for the pump is at the base of the hot water cylinder as close as possible to the cylinder.

If you are fitting the pump above the hot water cylinder you will need to install a anti gravity loop as per loft pump shower diagram otherwise follow single impeller shower pump installation diagram. Hot Water Supplies and Connections.