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PAW FriwaMega - DN 32, Installation And Operation Instructions Manual

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PAW FriwaMega - DN 32 Installation And Operation Instructions Manual Download Page 9

3 Product description 

 

 

2014/11 

99640766x-mub-en – V03

 

9 

 

 

 

Connections secondary circuit 

3 

Cold water supply 

4 

Hot water outlet 

5 

Hot water circulation 

 

 

 

Equipment secondary circuit 

a 

Piston valve hot water circulation 

b 

Piston valve cold water inlet 

c 

Pressure relief valve 10 bars, suitable 
for domestic hot water 
Only for the protection of the station. 
Does not replace the pressure relief 
valve that has to be mounted on site! 

d 

Temperature sensor Pt1000 

e 

Heat exchanger 

f + g  FlowSonic 1-130 l/min 
h 

Drain valve 

i 

Temperature sensor Pt1000 

j 

Circulation pump 

k 

Piston valve hot water outlet

 

 

 

Summary of Contents for FriwaMega - DN 32

Page 1: ...lerstr 11 D 31789 Hameln Germany Phone 49 5151 9856 0 Fax 49 5151 9856 98 E mail info paw eu Web www paw eu 2014 11 99640766x mub en V03 1 Installation and Operation Instructions Domestic Hot Water Module FriwaMega DN 32 ...

Page 2: ...Item no 99640766x mub en Version V03 Date 2014 11 Translation of the original instructions We reserve the right to make technical changes without notice Printed in Germany Copyright by PAW GmbH Co KG PAW GmbH Co KG Böcklerstraße 11 D 31789 Hameln Germany ...

Page 3: ...missioning specialist 16 7 1 Filling the primary circuit 17 7 2 Commissioning of the controller 18 7 3 Maximum withdrawal flow rate 20 7 4 Setting the temperature 22 8 Maintenance specialist 23 9 Spare parts specialist 24 9 1 Control and insulation 24 9 2 Hydraulics primary circuit 6407660 6407661 6407662 25 9 3 Hydraulics secondary circuit FriwaMega without circulation 6407660 26 9 4 Hydraulics s...

Page 4: ...ease observe the instructions of the corresponding manufacturer Item Item number Controller FC3 8 Pump primary Circulation Heat exchanger FriwaMega 6407660 Grundfos UPM XL 25 125 Optional Grundfos UPM2 15 75 CIL2 or Grundfos UPML 25 105 N 2 x 60 plates FriwaMega with circulation 6407661 Grundfos UPM XL 25 125 Grundfos UPML 25 105 N 2 x 60 plates 6407662 Grundfos UPM XL 25 125 Grundfos UPM2 15 75 C...

Page 5: ...perature sensor on the domestic hot water outlet Flow meter on the domestic hot water outlet Fill and drain valve for draining the heat exchangers in the primary and secondary circuit Vent valve primary and secondary for venting the heat exchangers 1 3 Designated use The domestic hot water module must only be mounted in heating installations between the buffer tank and the domestic hot water circu...

Page 6: ...relevant local and national regulations accident prevention regulations of the professional association instructions and safety instructions of this manual WARNING Danger of scalding due to hot water Undesirable circulation of water in the primary circuit can cause the exit of water of up to 90 C at the withdrawal point External pumps must not be installed between the service water module and the ...

Page 7: ...ve to avoid that EPDM gets in contact with substances containing mineral oils Use a lubricant based on silicone or polyalkylene and free of mineral oils such as Unisilikon L250L and Syntheso Glep 1 of the Klüber company or a silicone spray NOTICE Malfunction The domestic hot water module must be integrated in the potential equalisation of the electric installation This can be guaranteed by establi...

Page 8: ...cription Connections primary circuit 1 Flow from the buffer tank warm 2 Return to the buffer tank cold Equipment primary circuit A Return ball valve B Check valve C Heat exchanger D Temperature sensor Pt1000 E Drain valve F Primary pump G Check valve H Flow ball valve ...

Page 9: ...t water circulation b Piston valve cold water inlet c Pressure relief valve 10 bars suitable for domestic hot water Only for the protection of the station Does not replace the pressure relief valve that has to be mounted on site d Temperature sensor Pt1000 e Heat exchanger f g FlowSonic 1 130 l min h Drain valve i Temperature sensor Pt1000 j Circulation pump k Piston valve hot water outlet ...

Page 10: ...ke some time to plan the installation WARNING Danger of scalding due to hot water Undesirable circulation of water in the primary circuit can cause the exit of water of up to 90 C at the withdrawal point External pumps must not be installed between the service water module and the buffer tank The domestic hot water module must not be connected to a distribution manifold Mounting example FriwaMega ...

Page 11: ... 8 litre 50 C 1 0 litre 55 C 1 4 litres 70 C 45 C 0 7 litre 50 C 0 8 litre 55 C 0 9 litre 80 C 45 C 0 5 litre 50 C 0 6 litre 55 C 0 7 litre Calculation example for the dimensioning of the buffer tank Temperature buffer tank 60 C Required withdrawal flow rate at the tap 20 l min Domestic hot water temperature set at the controller 45 C How large must the tank be to allow for a continuous withdrawal...

Page 12: ...n period of time Temperature dependent operation In this operating mode the circulation only starts if the adjustable minimum temperature on the circulation temperature sensor is not reached during the chosen period of operation The circulation stops after the required temperature has been reached or after the end of the chosen period of time The operating modes can be combined with one another as...

Page 13: ... Damage to property The pressure relief valve integrated in the station does not replace the safety groups of the potable water connection as per DIN 1988 The pressure relief valve only protects the module from overpressures in case of servicing NOTICE Damage to property If there are water supplies that may cause pressure surges for example flush valves washing machines or dishwashers connected to...

Page 14: ...f the installation Top view 1 Determine the mounting location of the domestic hot water module near the buffer tank In long pipes the transmission performance may be reduced due to higher pressure losses 2 Remove the station from the packaging 3 Remove the station from the pallet and position it at the location of installation 4 Mount the enclosed stand feet in order to compensate the unevenness o...

Page 15: ... from the buffer tank hot Connection 1 internal thread flat sealing Piping at least DN 40 42 x 1 5 mm maximum length 4 m Make sure to vent the Friwa at the highest point 2 Primary side return to the buffer tank cold Connection 1 internal thread flat sealing Piping at least DN 40 42 x 1 5 mm maximum length 4 m Make sure to vent the Friwa at the highest point 3 Secondary side cold water inlet Connec...

Page 16: ... gravity circulation For venting and flushing the installation the check valves must be open Turn the opening mechanism of the check valves into the position 180 The check valve is not operating For the operation of the installation all ball valves must be completely open and the check valves must be closed again position 0 Check valve normal flow direction in the figure downwards Position 0 Check...

Page 17: ...the check valves B and G at the opening mechanism 180 see page 16 3 Fill the storage tank using the already existing fill valves until an operating pressure of about 1 5 bars is reached Use appropriate water according to VDI 2035 ÖNorm H5195 1 4 Vent the pipe system at the designated points on site 5 Check the operating pressure of the storage tank after the venting and increase the pressure if ne...

Page 18: ...odule in the potential equalisation of the installation is correct 2 Connect the domestic hot water module to the mains 230 V 50 Hz 3 Remove the insulation and the front panel of the controller see controller manual page 5 4 Select the manual operating mode H1 in the selection menu of the controller Switch on the PWM signal of the pump 100 5 Let the pump run for several minutes to deaerate the dom...

Page 19: ... 10 l min and let the water run for about 2 minutes to deaerate the secondary circuit Close all withdrawal points in the secondary circuit afterwards 10 Manipulate the pressure relief valve c to deaerate the heat exchanger 11 Check the module for tightness and make sure that the electronic components stay dry 12 Set the desired domestic hot water temperature at the controller see page 22 The domes...

Page 20: ... loss on the domestic hot water side of the Friwa 1000 mbars The following examples illustrate the correlation between the domestic hot water temperature the withdrawal flow rate and the temperature of the buffer tank and show their impact on the heat transfer capacity of the Friwa Example 1 Domestic hot water temperature at the withdrawal point 45 C Temperature in the buffer tank 60 C FriwaMega m...

Page 21: ...hot water temperature 45 C after heating to 60 C and addition of cold water 10 C Boundary conditions Cold water temperature 10 C Example 1 Domestic hot water temperature at the controller 60 C Temperature in the buffer tank 70 C FriwaMega maximum withdrawal flow rate 133 l min transfer capacity 324 kW Example 2 Domestic hot water temperature at the controller 60 C Maximum withdrawal flow rate 150 ...

Page 22: ...east 5 K above the desired domestic hot water temperature Secondary side The possible withdrawal flow rate l min at the tap depends on the domestic hot water temperature set at the controller and on the temperature available in the buffer tank The maximum domestic hot water flow rate through the module FriwaMega is of 130 l min The following table illustrates the correlation between the storage ta...

Page 23: ...C 130 l min 316 kW 50 C 130 l min 148 l min 361 kW 55 C 112 l min 143 l min 358 kW 60 C 94 l min 133 l min 324 kW 80 C 45 C 130 l min 316 kW 50 C 130 l min 148 l min 361 kW 55 C 130 l min 166 l min 406 kW 60 C 121 l min 172 l min 419 kW at a cold water temperature of 10 C reheating not considered maximum flow rate 130 l min with a pressure drop of the FriwaMega of 1000 mbars for hydraulic reasons ...

Page 24: ...1 9 Spare parts specialist NOTICE Complaints and requests 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 9 1 Control and insulation ...

Page 25: ...9 Spare parts specialist 2014 11 99640766x mub en V03 25 9 2 Hydraulics primary circuit 6407660 6407661 6407662 ...

Page 26: ...9 Spare parts specialist 26 99640766x mub en V03 2014 11 9 3 Hydraulics secondary circuit FriwaMega without circulation 6407660 ...

Page 27: ...27 9 4 Hydraulics secondary circuit FriwaMega with circulation 6407661 6407662 FriwaMega with circulation Pump secondary Item number 6407661 Grundfos UPML 25 105 N high efficiency pump E12160 6407662 Grundfos UPM2 15 75 CIL2 high efficiency pump E1216311VA ...

Page 28: ...ng Operating data Maximum admissible pressure primary 3 bars secondary 10 bars Operating temperature 2 95 C Equipment Check valve primary 2 x 400 mm wc can be opened Primary pump High efficiency pump with PWM control 10 185 watt Secondary pump 6407661 6407662 optional High efficiency pump with PWM control 6 87 watt High efficiency pump with PWM control 5 63 watt Heat exchanger 2 x 60 plates Flow r...

Page 29: ...10 Technical data 2014 11 99640766x mub en V03 29 10 1 Pressure drop characteristics Pressure mWC Pressure kPa Flow rate m h ...

Page 30: ...lly installed components ݩ Circulation set ݩ Return distribution set ݩ Others Have both circuits been correctly flushed and vented no air noises in the pump ݩ Vented Are all the shut off valves open in the cold water line ݩ Open Is there a pressure of at least 1 5 bars on the primary side ݩ Checked Is there a pressure of at least 2 5 bars on the secondary side ݩ Checked Is there an error message o...

Page 31: ...11 Commissioning report 2014 11 99640766x mub en V03 31 ...

Page 32: ...PAW GmbH Co KG Böcklerstraße 11 D 31789 Hameln Germany www paw eu Phone 49 0 5151 9856 0 Fax 49 0 5151 9856 98 99640766x mub en V03 2014 11 ...

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