Reefe VSRM Series User Manual

Page | 4 Ascento 37 Export St Lytton QLD PH: 1800 807 604 | VSRM Inverter Contant Pressure Pumps | V2016.123. Installation and Operation instructionIMPORTANT NOTICES: READ BEFORE INSTALLATION3.1 IMPORTANT MANDATORY INSTALLATION REQUIREMENTS:1. IMPORTANT: a Check-Valve must be installed in the inlet pipe2. IMPORTANT: Install using Barrel-Union connections for easy removal for repair or servicing. Install a Y-Strainer orPre-Filter and also a Ball-Valve on the inlet piping. REFER to the Diagrammatic Instructions for more information. Nowarranty applies if these are not fitted according to the instructions.3. IMPORTANT: Pressure setting in the Pressure Tank MUST be changed, once the OPERATING PRESSURE isdecided/set. Firstly set the OPERATING PRESSURE (“Setting” on the keypad), then adjust the pressure in thePRESSURE TANK, recommended to be set at 50% to 70% of the OPERATING PRESSURE (“Setting” on the keypad)3.2 IMPORTANT NOTE: Pressure of the water at the discharge (taps, showers, irrigation etc) is affected by the pipesize. The SMALLER your pipes, the LOWER the pressure will be at discharge. Example: 13mm ID pipe over 20 metresat 30Lpm will reduce pressure at discharge by 240kPa (2.4bar) - whereas if 25mm ID pipe is used for 20 meters at30Lpm it only reduces pressure by a miniscule 10kPa. Smaller pipe also means that more power will be used as thepump has to work harder to overcome the extra back-pressure from small pipes. A small short-term saving (in thecost of the pipes) will become a long-term liability.Model Pump InletSizeInlet Pipe (SuctionPipe) IDPump OutletSizeDischarge Pipe IDVSRM38-72 25BSP 25 - 32mm 25BSP 20 - 25mmVSRM48-72 25BSP 25 - 32mm 25BSP 20 - 25mmVSRM39-102 32BSP 32 - 40mm 25BSP 25 - 32mmVSRM58-102 32BSP 32 - 40mm 25BSP 25 - 32mmVSRM50-270 40BSP 40 - 50mm 40BSP 32 - 40mmThe larger size is recommended for best performance.Pipe sizes are ID (Internal Diameter). We do not recommend 18mm Copper pipe is used for the main discharge forthese pumps – we recommend the larger sizes as per the chart above, is used for the main supply lines – smallerpipes then can be used to connect to the fixtures.3.3 IMPORTANT NOTE: The higher the Pressure setting (“Setting Pressure” on the pump control panel) the morepower you will use – set the pressure at the lowest pressure that is acceptable for the application. Therecommended setting is 65% of the max head pressure and the MAXIMUM setting is 80% of the max head pressure(refer to the label on the pump and also the table below) IF THE PRESSURE IS SET TOO HIGH THE PUMP WILL RUNCONTINUOUSLY – this will cost you a lot of wasted power and void the warranty.Model RecommendedPressure Setting forflooded suctionMaximum Pressuresetting for floodedsuctionMaximum Pressure setting for Mains boostingVSRM38-72 2.5Bar 3.0Bar 3.0Bar above existing mains pressure(cannot exceed 10.0Bar)VSRM48-72 3.1Bar 4.0Bar 4.0Bar above existing mains pressure(cannot exceed 10.0Bar)VSRM39-102 2.6Bar 3.0Bar 3.0Bar above existing mains pressure(cannot exceed 10.0Bar)VSRM58-102 3.7Bar 4.9Bar 4.9Bar above existing mains pressure(cannot exceed 10.0Bar)VSRM50-270 3.9Bar 4.2Bar 4.0Bar above existing mains pressure(cannot exceed 10.0Bar)