You may simply want to boost the flow and pressure of a shower or tap supplied with hot water from a combination boiler or protect the flow and pressure when someone opening a tap elsewhere in your home causes your shower to fluctuate. In more serious pressure problems your combination boiler will shut down.
If your boiler shuts down due to low pressure.
Fit a SP21S before the Combi Boiler which will give you enough pressure and flow for a shower.
If your boiler does not shut down.
Fit a SP2B (to boost hot only) or a SP22S (to boost hot and cold) after the Combi Boiler.
This short explainer video should answer when, where, and why you may need a ShowerPowerBooster
The number of showers you can boost (each protected shower needs a SP2B or a SP22S), depends on how much water your combi boiler can heat. A typical home will have a 28KW which means two SP2B could give you two good showers.
A 28 KW Combi Boiler can heat up to 13 litres of hot water a minute (2 showers)
A 36 KW Combi Boiler can heat up to 16 litres of hot water a minute (3 showers)
A 50 KW Combi Boiler KW can heat up to 25 litres of hot water a minute (4 showers)s per minute hot water flow from each.
Run the tap or shower you want to boost and fit our pump on the pipe that gets hot.
Our pumps will boost the shower and also it will also protect the hot pressure to the shower when someone opens a tap elsewhere in the house. ShowerPowerBoosters are the only pumps which can be fitted on the hot side of a combi boiler.
Many plumbers will fit a Combi Boiler and leave the the customer with pressure problems (which is why we sell hundreds of SPB to people with Combi Boilers). Please note that if you already have a good pressure and flows greater than 7 litres a minute then you have no pressure problem or flow problem for the SPB to solve . Please avoid fitting a SPB ‘just in case’. Check you have a problem – if you have a pressure problem a SPB will solve it to give you a good shower or tap flow. For detailed advice specific to your home please contact our technical team on 01928 620 099 or email SPB@flowflex.com during office hours. Out of hours email alanderekwright@icloud.com
Detailed drawings and instructions are in the booklet sent with the pumps but you can download the online version of this guide using the orange link on this page.
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