Flow Restrictors - Boss MX1-3HL Operation & Maintenance Manual

Installation of mini mechanical units

Remove the appropriate coverings.
 Ensure that the float valve is set to its lowest position.
 All pipework connections are to be made with appropriate proprietary jointing compound. PTFE is not
permitted.
 Connect the overflow pipework.
 Connect the mains water pipework.
 Connect the system pipework.
 Open the system isolation valve.
 Check the break tank internal pump suction filter is present and clear.
 Connect the electrical supply to the fused connection block / fused spur as appropriate.
 Set the range and Diff on the pressure control switch.
 Connect the boiler to the boiler interlock connection block, High / Low Switches

Flow Restrictors

Pressurisation equipment fitted with a plastic, side-entry torbeck valve must be fitted with a filter
and – depending on the mains water pressure – a flow restrictor. Failure to do this may result in
damage to the equipment.
Two different flow restrictors are supplied with the equipment, both of which include an integral filter. The
selection of the appropriate flow restrictor is based on the maximum mains water pressure at the point of
installation. Please refer to the following table for selection.
We reserve the right to change designs and technical specifications of our products
Mains Water Pressure
Below 1 Bar
1 – 4 Bar
Above 4 Bar
www.bssindustrial.co.uk
Requirement
No Restrictor. Install Filter Only
Low Pressure Restrictor (coloured)
High Pressure Restrictor (white)
.
Rev 2.1 Oct-15 Page 9 / 28