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Stuart Turner 46721, Installation, Operation & Maintenance Instructions Manual

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Stuart Turner 46721 Installation, Operation & Maintenance Instructions Manual Download Page 1

Installation, Operation & Maintenance 

Instructions

Please leave this instruction booklet with the end user as it contains 

important guarantee, maintenance and safety information

Read this manual carefully before commencing installation.

This manual covers the following products:

SPU 135 Midi

Pt. No. 46721

SPU 150 Midi

Pt. No. 46723

SPU 235 Midi

Pt. No. 46722

SPU 250 Midi

Pt. No. 46724

STUART

STUART

CE compliant product

2

Summary of Contents for 46721

Page 1: ...s it contains important guarantee maintenance and safety information Read this manual carefully before commencing installation This manual covers the following products SPU 135 Midi Pt No 46721 SPU 15...

Page 2: ...l or industrial applications These could include slight leaks air venting etc The units are not designed to deal with sudden losses of system pressure due to major water losses over extended periods T...

Page 3: ...th the appliance z z This product should not be used for the supply of water to more than one heating cooling system at a time z z The electrical installation must be carried out in accordance with th...

Page 4: ...allation details carefully as they are intended to ensure this product provides long trouble free service Failure to install the unit in accordance with the installation instructions will lead to inva...

Page 5: ...sed with item C 2 Flexible hose G 15 mm compression 2 Cable tie 2 M6 screw 1 Instruction book 1 Wall mounting plate 1 A E C B D H G F I C Fig 1 IMPORTANT With the appliance removed from its packaging...

Page 6: ...ipework Ensure pipework to and from pump is independently supported clipped to prevent forces being transferred to inlet and outlet branches of the unit Do not secure pipework to the SPU Midi this wil...

Page 7: ...nt of the unit will be required to operate the keypad and view the display 2 13 Protection The SPU Midi must be located in a dry frost free area 2 14 Ventilation Ensure an adequate air flow to cool th...

Page 8: ...rom the SPU Midi pump to the pipework connected to the appliance outlet However care must be taken when mounting the SPU Midi that any noise is not amplified through loose panels or pipework 2 21 Flex...

Page 9: ...Dual LockTM fastening system for quick and easy access 3 12 Principle of operation The pressurisation unit consists of a break tank and one two peripheral pumps The break tank is supplied with mains...

Page 10: ...sure above 4 bar 4 12 Cold mains feed connection The connection to the cold water mains inlet is made using the 15 mm compression flexible hose supplied Ensure the rubber sealing washer supplied with...

Page 11: ...em as per the image below do not leave out fastenings as this will compromise the integrity of the wall plate 3 Ensure you have sufficent room around the area you are mounting the SPU Midi to allow in...

Page 12: ...tact with the expansion vessel bladder could cause premature failure of the expansion vessel 2 Isolating valves MUST be installed on the unit inlet and outlet before connection to the flexible hoses t...

Page 13: ...d the heating cooling system These devices will prevent the pressure sensor from reading the system pressure and will lead to incorrect operation of the unit 9 The SPU Midi should be connected to the...

Page 14: ...be fitted with earthing clamps in accordance with current regulations Fig 14 5 16 Earthing This appliance must be earthed via the supply cord 5 17 Pipework Copper or metallic pipework must have suppl...

Page 15: ...ured blue must be connected to the terminal which is marked with the letter N or coloured black z z The wire which is coloured brown must be connected to the terminal which is marked with the letter L...

Page 16: ...damage For connection of output relays follow the steps and images below 1 Remove the required green connector from the right hand side of the control board 2 Strip 6 8 mm insulation from the end of t...

Page 17: ...are carefully noted to ensure re assembly to the same factory pattern is always maintained If the supply cord is to be changed or is damaged it must be replaced with a special cord assembly available...

Page 18: ...g loop if possible If this is not possible the pressurisation unit can be used to fill the system after commissioning has taken place Depending on the size of the system this may take a considerable a...

Page 19: ...ll be displayed whilst the unit is powered If an alarm or error is raised the red Error light will be displayed A number pressure set points can be set using the menus these set points are detailed be...

Page 20: ...ntial pressure 3 see Fig 20 Sets the pressure the SPU will turn on at as the system pressure falls Relative to the system pressure Set in 0 05 bar increments below the System pressure 2 cannot be set...

Page 21: ...e accuracy of the pressure setting on lower volume systems Pump start delay Sets the time delay in starting the pump after system pressure differential pressure 3 is reached on falling pressure Adjust...

Page 22: ...6 23 Advanced setting menu Set Pressure 2 bar Differential 0 2 bar Hi Alarm 2 5 bar Lo Alarm 1 3 bar System fill off Run activity high 1000 Relay allocation Pump fail Relay operation normally open Pa...

Page 23: ...imit Enter pass code If set Delay Push to test pump Pump activity log Power interrupt log Alarm log Start up screen logo Pump run time log System fill volume System pressure display Error display Syst...

Page 24: ...on the outlet of the SPU z z Turn the electrical supply ON to the SPU The Stuart Turner start up logo will be displayed and then the Home screen will be displayed z z The SPU will run briefly and then...

Page 25: ...onitor the system pressure and re pressurise the system if the system pressure drops below the system pressure differential pressure See Fig 20 Example System pressure 2 bar differential pressure 0 5...

Page 26: ...causing an over pressure within the system or alarms being triggered 7 12 Pump exercise function If the pumps do not need to operate for more than a week both pumps will start for 3 5 seconds to avoid...

Page 27: ...membrane cover over the display 8 13 Spares The SPU Midi is designed and built to be a reliable and high quality product in the event of spares being required please see the Stuart Turner website for...

Page 28: ...move debris and clean tank if needed Debris may cause damage to the pumps if it is allowed to be drawn in 3 Check pressure vessel pre charge pressures before the system pressure is increased 4 Open th...

Page 29: ...00 kPa Maximum working pressure 6 bar Ambient air temperature Min 4 o C Max 40 o C Relative humidity 95 non condensing Min Max water temperature Min 4 o C Max 23 o C Water tank Usable capacity 8 litre...

Page 30: ...essure is 0 bar Error will be displayed if the sensor signal is outside parameters Replace sensor call Stuart Turner High pressure alarm triggered High pressure System pressure too high Check system o...

Page 31: ...ny Engineer System set pressure Differential pressure Hi alarm set pressure Lo alarm set pressure 12 14 Service Log Service No 1 Date Engineer name Company name Tel No System pressure bar Differential...

Page 32: ...ation Float valve operation x Level probe operation x Water condition x Exp vessel pre charge x Comments Service No 3 Date Engineer name Company name Tel No System pressure bar Differential pressure b...

Page 33: ...ation Float valve operation x Level probe operation x Water condition x Exp vessel pre charge x Comments Service No 5 Date Engineer name Company name Tel No System pressure bar Differential pressure b...

Page 34: ...lation improper use unauthorised repair normal wear and tear and defects which have a negligible effect on the value or operation of the product Reasonable evidence must be supplied that the product h...

Page 35: ...35...

Page 36: ...Directive 2011 65 EU WEEE Directive 2012 19 EU IT IS HEREBY CERTIFIED THAT THE STUART PRESSURISATION UNIT AS SERIAL NUMBER BELOW COMPLIES WITH THE ESSENTIAL REQUIREMENTS OF THE ABOVE E E C DIRECTIVES...

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