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Installation Guide
Fill the storage tank with water through the ball cock. Please ensure the right ball cock is fitted
for the corresponding pressure rating. High pressure and low pressure ball cocks available.
Installer to ensure and test the correct option is being used, as pressure differs between areas.
Make sure the electrical supply is fully isolated and cannot be turned on before working on
the pump, motor controller or any part of the unit.
Do not turn on electrical supply to the Multiboost without ensuring all electrical fittings and
all covers are intact and fully isolated from human touch during operation.
General Information
1. The discharge pipe from the controller must be, at minimum, the same size as the
Multiboost inlet supply; if it is smaller, it may result in reduced pressure and flow to the
outlets
2. The overflow pipe that is fitted should be twice the size of the inlet supply and should be
piped away to safe drainage zone. (It’s recommended that a full test is carried out by the
installer)
3. When being installed, the tank’s overflow connection must be at least twice the internal
size of the supply pipe, taking into account the incoming pressure and flow. The
overflow pipe must not be obstructed or restricted (no sharp elbows), factoring in the
distance being piped away to the drainage zone. The pipe should have an even, gradual,
straight slope to cope with the incoming pressure and flow. This pipe may have to be
further increased in size and EPS recommends the installer fully tests this system to
ensure that the overflow pipe is capable and adequate to cope with the unlikely event of
a failure. The pipe size should be increased in proportion with the distance from the unit
to the drainage zone
4. The discharge pipe work must be properly secured so once the Multiboost is fitted,
there is no stressed internal pipe work
5. Pipework installations should meet local water authority regulations
6. Electrical installation should meet the most recent issue of the IEE regulations and is
fitted by a qualified person
7. Check that the cold water storage tank capacity is designed to meet your water
consumption demands and is suitable for the installation location
8. Drip tray or bunded tank must be included on every installation with correct overflow
9. Please refer to Multiboost Commissioning Checklist as a guide
Recommendations
• Isolation valves fitted before and after unit.
• Overflow valve twice the size of the inlet supply valve.
• Pipe work easy to disassemble.
• Bunded tank/drip tray used for dwelling installations.
Water Quality
In the event that the water remains unused inside the tank for an extended period, it should
be drained and flushed to maintain water quality. This is recommended to ensure water
remains fit for use year on year. There should be a drain off point at the end of each tank.
As required by any stored water arrangement, it is recommended that you disinfect and clean
the tank annually. Regular water samples should be taken periodically to check bacteria levels
(Recommended 2 tests per year).