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PAW SolexMini TW, Installation And Commissioning Instructions, Page: 1 / 28

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PAW GmbH & Co. KG 

Böcklerstr. 11, D-31789 Hameln, Germany 

Phone: +49-5151-9856-0, Fax: +49-5151-9856-98 

E-mail: [email protected], Web: www.paw.eu 

 

2016/05 

996091425-mub-en – V04

 

1 

  

 

Installation and Commissioning Instructions 

Transfer station DN 15 

SolexMini TW 

[Hydraulics] 

  

 

 

 

 

 

 

Summary of Contents for SolexMini TW

Page 1: ...tr 11 D 31789 Hameln Germany Phone 49 5151 9856 0 Fax 49 5151 9856 98 E mail info paw eu Web www paw eu 2016 05 996091425 mub en V04 1 Installation and Commissioning Instructions Transfer station DN 15 SolexMini TW Hydraulics ...

Page 2: ...aintenance specialist 20 5 1 Draining the solar circuit 21 5 2 Deinstallation 21 6 Spare parts specialist 22 6 1 Primary circuit SolexMini TW 6091425 22 6 2 Secondary circuit SolexMini TW 6091425 23 7 Technical data 24 7 1 Dimensional drawing SolexMini TW 25 7 2 Pressure drop characteristic curve SolexMini TW 25 8 Function of the check valves specialist 26 9 Commissioning report 28 Item no 9960914...

Page 3: ...ns These instructions describe the functions installation commissioning and operation of the transfer station SolexMini TW The chapters called specialist are intended for specialists only For other components of the solar system such as collectors storage tanks expansion tanks and controllers please observe the instructions of the corresponding manufacturer Item number Controller SC5 14 Flow rate ...

Page 4: ...in the station Pressure gauge to display the system pressure in the solar circuit Vent valves for an easy venting of the solar circuit Fill and drain valves with caps to flush fill and drain the solar circuit Electronic flow rate sensors for heat quantity balancing and speed control of the secondary pump depending on the performance primary On the heating side the installation must be equipped wit...

Page 5: ...d in these instructions Due to its design the station must only be mounted and operated as described in these instructions Only use PAW accessories with the transfer station Improper usage excludes any liability claims Under the influence of solar radiation the collectors can get very hot The solar fluid in the solar circuit can heat up to more than 100 C Flush and fill the solar circuit only if t...

Page 6: ...th pressure relief valves there is a risk of scalding due to vapour escape During installation check if the local conditions require the connection of a discharge line to the safety group For this purpose please observe the instructions regarding the pressure relief valve The pressures calculated by the installation planner for the expansion tank and the operating pressure of the installation must...

Page 7: ...nly close the ball valves for service and maintenance If you close the ball valves in case of servicing do also put the pumps out of operation and close the ball valves in the secondary circuit NOTICE Material damage due to mineral oils Mineral oil products cause lasting damage to seals made of EPDM whereby the sealant properties get lost We do not assume liability nor provide warranty for damage ...

Page 8: ...can be very hot near the collector the fitting assembly must be installed at a sufficient distance from the collector field It may be necessary to install an intermediate tank in order to protect the expansion tank Not included in the scope of delivery Accessories cutting ring compression fitting 1 Push the union nut and the cutting ring onto the copper pipe The pipe must protrude at least 3 mm fr...

Page 9: ...3 cm out of the wall 5 Remove the insulating front shell Hang the module onto the screws and tighten the screws WARNING Personal injury due to polluted potable water Heating water contains harmful substances that must not be washed into the domestic hot water circuit If the station has been used to charge a buffer tank there is still heating water in the valves and fittings and in the pump of the ...

Page 10: ...e pipe for the expansion tank below the pressure gauge e and fix the bracket for the expansion tank For service work on the expansion tank we recommend the installation of a cap valve item no 5302 or a tank connection coupling item no 5310 on the expansion tank NOTICE Note regarding the expansion tank While flushing and filling the station the expansion tank must not be connected in order to avoid...

Page 11: ... avoided Connection scheme SC5 14 Connection scheme 881 for DHW systems and heating systems Connection scheme 882 for heating systems Please observe the separate instructions regarding the controller SC5 14 1 Connect the temperature sensors to the controller Collector sensor S1 Storage tank bottom S2 Integrated S3 S9 FlowRotor Collector sensor S1 Storage tank 1 bottom S2 Storage tank 2 bottom S4 r...

Page 12: ...below 70 C NOTICE Risk of frost It is often not possible to completely drain solar installations after flushing Thus there is a risk of frost damage when flushing with water Therefore flush and fill the solar installation only with the solar fluid used later Use a water and propylene glycol mixture with maximum 50 of propylene glycol as solar fluid NOTICE Note regarding the sequence of commissioni...

Page 13: ...sure that only potable water must be used in the first case mentioned In the second case mentioned only heating water treated according to VDI 2035 Ö Norm H5195 1 must be used To avoid that dirt particles are washed into the heat exchanger shut the ball valves of the module and wash out the present dirt particles scale residues before the initial commissioning of the tank 1 Open the piston valves ...

Page 14: ...t exchanger and the expansion tank Therefore only use flush and fill stations with fine filters The solar circuit is flushed against the flow direction Therefore make sure that the pump of the solar circuit can not be switched on Ball valve with integrated check valve Normal flow direction in the figure downwards 0 45 90 Check valve is operating flow only in flow direction Check valve is not opera...

Page 15: ...lected in the upper part of the Airstop and can be released at the vent plug j WARNING Danger of scalding due to vapour escape The escaping fluid can heat up to more than 100 C and cause scalding Carefully open the vent plug and close it again as soon as medium escapes Venting the solar system after commissioning At the beginning vent the solar installation daily and then weekly or monthly dependi...

Page 16: ...n valve d 5 Open the fill and drain valves h d and put the flush and fill station into operation 6 Slowly open and close the return ball valve b during flushing in order to vent the pump section 7 Flush the solar circuit until the solar fluid exits without bubbles 8 Close the drain valve d while the filling pump is running and increase the system pressure to about 5 bars The system pressure is dis...

Page 17: ...s of the flush and fill station see instructions regarding the expansion tank 13 Close the fill and drain valves h d 14 Put the check valves into operating position by turning the ball valves a b into position 0 see page 14 15 Connect the controller to the mains Set the pump of the solar circuit in the manual mode to ON according to the controller instructions 16 Let the pump of the solar circuit ...

Page 18: ...lves against dirt They are not designed to take up high system pressures The ball valves must be closed to guarantee tightness 19 Mount the insulating front shell 20 Set the controller to automatic mode see controller instructions 21 Mount the insulating front shell of the transfer station The commissioning of the solar installation is now completed Please fill in completely the commissioning repo...

Page 19: ...controller If you select and save another system the parameters are reset to the factory settings In this case the parameters in the menu must be modified Thus a proper functioning of the installation is ensured You will find a detailed description of the operation of the controller in the separate controller manual Preset system SolexMini TW 1 collector 1 storage tank ...

Page 20: ...uid can escape as vapour and cause scalding Only carry out maintenance work if the collector temperatures are below 50 C Wait until the solar fluid has cooled down to maximum 50 C 1 Close the ball valves a b and release the solar fluid at the fill and drain valve h Make sure that the solar fluid is collected in a heat resistant container 2 Change the faulty part against the new part 3 Fill the sol...

Page 21: ...re the heat resistant collecting container in such a way that people standing nearby are not endangered during the draining of the solar installation 4 Open the fill valve h of the transfer station 5 To accelerate the draining of the solar circuit the vent valve possibly present at the highest point of the solar system can be opened 6 Dispose of the solar fluid observing the local regulations 5 2 ...

Page 22: ...ests orders of spare parts will only be processed with information on the serial number The serial number is placed in the upper right corner of the support sheet in the station In case of a complaint please send us the completely filled commissioning report on page 28 6 1 Primary circuit SolexMini TW 6091425 ...

Page 23: ...6 Spare parts specialist 2016 05 996091425 mub en V04 23 6 2 Secondary circuit SolexMini TW 6091425 ...

Page 24: ...6 bars secondary 10 bars Maximum operating temperature Primary 120 C secondary 95 C Maximum stagnation temperature 140 C Maximum propylene glycol content 50 Operating temperature sensors 25 C to 120 C Equipment Pressure relief valve Primary 6 bars secondary 10 bars Pressure gauge 0 6 bars Flow meter Primary FlowRotor measuring range 0 5 15 l min Sensors 3 x Pt1000 integrated 2 x Pt1000 enclosed Ch...

Page 25: ...7 Technical data 2016 05 996091425 mub en V04 25 7 1 Dimensional drawing SolexMini TW 7 2 Pressure drop characteristic curve SolexMini TW Pressure m wc Pressure kPa Flow rate l h ...

Page 26: ...alled in order to prevent gravity circulation Components such as syphons heat traps 2 way valves zone valves or additional check valves can be installed for this purpose Example The station is equipped with two check valves 2 x 200 mm wc 400 mm wc You use a mixture of water and 40 of propylene glycol as solar fluid The installation height between the collector and the storage tank is 10 m Installa...

Page 27: ...culation This circulation can lead to a cooling down of the storage tank Calculation example Δp Δρ g h Collector temperature 5 C Density of the solar fluid ρ1 1042 kg m Storage tank temperature 67 C Density of the solar fluid ρ2 1002 5 kg m Δρ ρ1 ρ2 39 5 kg m g 9 81 m s Installation height h 10 m Δp 3875 Pa 395 mm wc The two check valves of the station 2 x 200 mm wc are sufficient for an installat...

Page 28: ...ld Manual vent valve Automatic vent valve No Vented Airstop station Vented Solar fluid type glycol Antifreeze tested up to C Serial numbers Flow rate l m Station Pump type Controller Pump speed level I II III System pressure mbars Software version Expansion tank type Initial pressure mbars Pressure relief valve Checked Check valves Checked Plumbing company Date signature PAW GmbH Co KG Böcklerstra...

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