How to install a shower pump

Written by giselle diamond
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A shower pump is a handy accessory for a comfortable shower. A shower pump is an electric pump that is used to maintain a steady flow and pressure of water in a shower. The pump works best on stored water as compared to water that comes directly from the mains. With a shower pump, the fear of water suddenly stopping when you are taking a shower is eliminated. A pump driven shower is also called a power shower and is one of the best methods of ensuring a comfortable shower.

Skill level:
Moderate

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Things you need

  • Shower pump
  • 15-mm Pipes
  • Essex or surrey flange
  • Isolating valve
  • Thermostat
  • 5 amp plug point
  • Concrete paving slab

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Instructions

  1. 1

    Locate a proper position for the pump in the bathroom. The pump should be kept as close as possible to the hot and cold water storage tanks. Ideally the pump should be positioned 30-m below the cold water tank and 4-m from the hot water source. The pump should be as low as possible and the input head of water as high as possible. The area around the pump should be well ventilated. The pump makes a lot of noise while working and to reduce the noise it should be placed on a concrete paving slab. The pump should be easily accessible for service and maintenance.

  2. 2

    Mount the pump on the concrete slab horizontally. The outlets for the pipes should be positioned vertically upwards.

  3. 3

    Connect the pipe to the cold water tank and complete the pipe work before connecting the pump to electricity. Connect the supply pipe to the cold water supply directly to the supply tank. Make sure that the supply tank has sufficient capacity so that water can flow at the rate of 8-liters per minute. A 15-mm water pipe will do the best job. Connect a pipe to the hot water outlet and directly connect the pipe to the hot water cylinder via an Essex or Surrey flange. The flange prevents the pump from sucking air from the vent pipe. A thermostat must be fitted to the pump so that the water does not become too hot.

  4. 4

    Install an isolation valve to the pipe and connect it to the shower inlet. The isolation valve must not be screwed on too tight. Insert the olive or the brass ring that comes with the valve between the nut and the pipe to make a water tight joint.

  5. 5

    Install an isolation valve to the pipe and connect it to the shower inlet. The isolation valve must not be screwed on too tight. Insert the olive or the brass ring that comes with the valve between the nut and the pipe to make a water tight joint.

  6. 6

    Connect the electric wiring of the pump to an electric switchboard in the bathroom. Usually plugs connected to shower pumps are 5 amps and make sure that a five amp plug point is available for the electricity connection.

Tips and warnings

  • The electrical connections must be fitted only after the piping is complete.
  • There are rules about what kind of pumps can be used for showers and the maximum capacity of the pumps. Make sure you check with the municipality or town council about the rules regarding shower pumps before buying and installing them.

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