Installation
The Presfix Fill unit is despatched mounted on a wooden pallet and covered in a protective film, it is recom-
mended that the unit be retained in the protective packaging until the product is to be installed.
The unit will arrive pre-packaged and wired ready for installation.
This product has been fully run tested at our works under simulated site conditions.
The unit should be sited in a dry clean well-ventilated area with good all round access.
Electrical connections
The input supply to the switched spur is fed from the main pressurisation unit output terminals 1,2&3. This
output is only active when the main pressurisation unit is calling for water top up.
The low water cut out float switch is wired back to the main pressurisation unit terminals 43&45
Drawing M10127-1 attached gives connection details. The cable must be of adequate size to
carry the motor full load current. This is shown on the duty plate. All non power caballing should
be limited to 2.5mm².
All connections must be made using the appropriate wiring drawings for the equipment being
installed, with particular attention being paid to the supply voltages.
The supply voltage is shown on the set duty plate.
Never operate this product with the control panel or switched spur lid removed.
It is essential that this equipment is earthed to the building earth system.
The base frame must be earth bonded directly to the building earth system.
All wiring should be arranged such that it enters the control boxes through the appropriate
cable glands.
Water supply and system connection
Connect the Presfix Fill set ½”BSP ball valve (left side of break tank) to a suitable water supply, incorporating
an approved stop cock.
If the pressure available at the ball valve is below 0.3 bar, a low pressure orifice must be
obtained and fitted.
Extend the ¾” plastic overflow pipe from the Presfix break tank to a position where an overflow
will be noticed and rectified. Ensure the warning pipe is able to handle the incoming water
volume, if this is not the case then a reducing valve should be fitted to the incoming water supply.
Connect the pressurisation port ½” BSP (right hand side of unit) to the main system expansion vessel Fill
point , details of connection point will be found in the main pressurisation unit O&Ms
Note:
This product has a type AB air gap and contains a weir which is intended to spill over if a catastrophic
failure occurred, If it is not acceptable to spill water directly to the floor then this product should be mounted
on a try which should then have a discharge connection to drain.
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