Why Boost your existing electric shower ?
The shower booster pump can be fitted before an existing shower to boost pressure and stop fluctuation in pressure and temperature. When taps or toilets are used, water pressure to an electric shower will fall. This can cause the electric shower to become very hot, or automatically switch off. Having a ShowerPowerBooster before the shower can maintain pressure and stop this happening.
You can and should boost your electric shower if:
The shower runs too hot or cuts out.
or
The flow at full hot is the same as full cold
A single SP2B is normally all you will need but for very low mains pressure, a SP21S double boost must be added in line for the electric shower. We suggest you buy a single boost SP2B or the double boost SP21S to match the kilowatt rating of your particular electric shower. For a 12.5 kW electric shower a triple boost or more may be needed.
Electric showers contain a heating element which heats the incoming cold water. Performance drops in winter as the shower works harder to heat the cooler water supply. The kilowatt rating dictates the amount of water they can effectively heat to 42° C temperature.
A ShowerPowerBooster will increase the flow up to the maximum capacity of the shower electric shower.
7.5 kW 3.5 Litres a minute – x1 Single Boost SP2B.
9.8 kW 4.7 Litres a minute – x1 Double Boost SP21S.
12.5 KW 6.0 Litres a minute – x1SP2B x2 SP1U (triple boost)
A ShowerPowerBooster will increase flows to the maximum flow listed above but if you are already getting more flow the electric shower will close a valve to stop you getting more.
Fitting a ShowerPowerBooster in Your Home.
Turn Off Water
Check you can turn off the water before you cut the pipes.
Turn off the stop tap (Clockwise Close), it is normally under your kitchen sink.
Run your kitchen tap and the water should stop.
Try the electric shower just to check the electric shower does not feed from another pipe.
Make sure you have the fittings you need.
You will have all you need supplied with your pump(s) to fit your SPB to a 15mm pipe and there are instructions on how to fit the 3 piece reducers to a copper pipe in the ShowerPowerBooster Manual. If you have plastic pipes then you must buy the inserts you need to stiffen the plastic pipes. These are essential when using plastic pipes with compression joints.
Cutting the pipes
Cut out 110mm of pipe using a pipe slice (see below), insert the ShowerPowerBooster, tighten the compression joints, turn on the water, plug in the transformer to a standard 3 pin plug socket. Good to go.
When tightening the compression joints never hold on to the motor to stop the fitting turning. The best way to stop the fitting turning is to use adjustable
