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English (GB)

7

5. Mechanical installation

5.1 Mounting

Fig. 4

Mounting the GRUNDFOS ALPHA2

Arrows on the pump housing indicate the liquid flow direction
through the pump.
See section

14.2 Installation dimensions, GRUNDFOS ALPHA2

.

• Fit the two gaskets supplied when the pump is mounted in the

pipe.

• Install the pump with horizontal motor shaft. See fig. 4.

TM

05

8

569

2

4

13

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Содержание ALPHA2 15-50 130

Страница 1: ...GRUNDFOS ALPHA2 Installation and operating instructions GRUNDFOS INSTRUCTIONS ...

Страница 2: ...ści WE My Grundfos oświadczamy z pełną odpowiedzialnością że nasze wyroby GRUNDFOS ALPHA2 których deklaracja niniejsza dotyczy są zgodne z następującymi wytycznymi Rady d s ujednolicenia przepisów prawnych krajów członkowskich WE Dyrektywa Niskonapięciowa LVD 2006 95 WE Zastosowana norma EN 60335 2 51 2003 Dyrektywa EMC 2004 108 WE Zastosowana norma EN 55014 1 2006 oraz EN 55014 2 1997 Dyrektywa E...

Страница 3: ...ically controlled 14 11 Startup 15 11 1 Before start up 15 11 2 Venting the pump 15 11 3 Venting of heating systems 15 12 Pump settings and pump performance 16 12 1 Relation between pump setting and pump performance 16 13 Fault finding 17 14 Technical data and installation dimensions 18 14 1 Technical data 18 14 2 Installation dimensions GRUNDFOS ALPHA2 XX 50 XX 60 19 15 Performance curves 20 15 1...

Страница 4: ...ol panel 2 1 Advantages of installing a GRUNDFOS ALPHA2 The installation of a GRUNDFOS ALPHA2 means easy installation and start up The pump is easy to install Thanks to the AUTOADAPT function factory setting the pump can in most cases be started without making any settings high degree of comfort Minimum noise from valves etc low energy consumption Low energy consumption compared to conventional ci...

Страница 5: ... and 4th digits week 11 Maximum system pressure MPa 5 Enclosure class 12 CE mark and approvals 6 Voltage V 13 Country of manufacture 7 Frequency Hz 14 Temperature class Example ALPHA2 15 50 130 Pump type Nominal diameter DN of suction and discharge ports mm Maximum head dm Cast iron pump housing N Stainless steel pump housing A Pump housing with air separator Port to port length mm 1 ALPHA2 15 50 ...

Страница 6: ...lity in heating systems for example the German standard VDI 2035 In domestic hot water systems it is advisable to use GRUNDFOS ALPHA2 pumps only for water with a degree of hardness lower than approx 14 dH For water with a higher degree of hardness we recommend a direct coupled TPE pump 4 3 System pressure Maximum 1 0 MPa 10 bar See fig 3 4 4 Relative air humidity RH Maximum 95 See fig 3 4 5 Enclos...

Страница 7: ...A2 Arrows on the pump housing indicate the liquid flow direction through the pump See section 14 2 Installation dimensions GRUNDFOS ALPHA2 XX 50 XX 60 Fit the two gaskets supplied when the pump is mounted in the pipe Install the pump with horizontal motor shaft See fig 4 TM05 8569 2413 ...

Страница 8: ...en and remove the four hexagon socket head screws holding the pump head with a tee key M4 2 Turn the pump head to the desired position 3 Insert and cross tighten the screws TM05 8570 2413 Warning The pumped liquid may be scalding hot and under high pressure Drain the system or close the isolating valves on either side of the pump before the screws are removed Caution Fill the system with the liqui...

Страница 9: ...ork can be reduced by insulating the pump housing and the pipe See fig 6 As an alternative polystyrene insulating shells can be fitted to the pump See section 16 Accessories TM05 8567 2413 Note Limit the heat loss from the pump housing and pipework Caution Do not insulate the control box or cover the control panel ...

Страница 10: ...tage and frequency correspond to the values stated on the nameplate See section 3 1 Nameplate Connect the pump to the power supply with the plug supplied with the pump as shown in fig 7 Light in the control panel shows that the power supply has been switched on TM05 8571 2413 Warning The pump must be connected to earth The pump must be connected to an external mains switch with a minimum contact g...

Страница 11: ...ck is active Factory setting Automatic Night SetBack not active 7 6 Push button for selection of pump setting Every time the push button fig 8 pos 5 is pressed the pump setting is changed A cycle is eight button presses See section 7 3 Light fields indicating the pump setting TM03 8919 2707 Pos Description 1 Display showing the actual pump power consumption in Watt 2 Eight light fields indicating ...

Страница 12: ...ontrol modes the pump performance and consequently the power consumption are adjusted according to the heat demand in the system Proportional pressure control In this control mode the differential pressure across the pump is controlled according to the flow The proportional pressure curves are indicated by PP1 and PP2 in the Q H diagrams See section 12 Pump settings and pump performance Constant p...

Страница 13: ...ore than 10 15 C within approx 2 hours is registered The temperature drop must be at least 0 1 C min Changeover to normal duty takes place without a time lag when the flow pipe temperature has increased by approx 10 C TM05 8151 2013 Warning Pumps built into gas boilers with a small water content must never be set to Automatic Night SetBack Note If speed I II or III is selected the Automatic Night ...

Страница 14: ...p in setting I speed I The minimum flow Qmin for the system must always be observed Consult the manufacturer s instructions 2 When the bypass valve has been adjusted set the pump according to section 8 Setting the pump 10 3 Automatic bypass valve thermostatically controlled Follow this procedure 1 Adjust the bypass valve with the pump in setting I speed I The minimum flow Qmin for the system must ...

Страница 15: ... e when the noise has ceased set the pump according to the recommendations See section 8 Setting the pump The system cannot be vented through the pump See section 11 3 Venting of heating systems 11 3 Venting of heating systems Fig 14 Venting of heating systems The heating system can be vented via an air escape valve installed above the pump When the heating system has been filled with liquid follo...

Страница 16: ...d increased at rising heat demand CP1 Lowest constant pressure curve The duty point of the pump will move out or in on the lowest constant pressure curve depending on the heat demand in the system See fig 15 The head pressure is kept constant irrespective of the heat demand CP2 Highest constant pressure curve The duty point of the pump will move out or in on the highest constant pressure curve dep...

Страница 17: ...y falls within the specified range b The pump is blocked Remove the impurities 2 Noise in the system Shows normal operating status a Air in the system Vent the system See section 11 3 Venting of heating systems b The flow is too high Reduce the suction head See section 12 Pump settings and pump performance 3 Noise in the pump Shows normal operating status a Air in the pump Let the pump run It vent...

Страница 18: ... Minimum inlet pressure 75 C 0 05 bar 0 005 MPa 0 5 m head 90 C 0 28 bar 0 028 MPa 2 8 m head 110 C 1 08 bar 0 108 MPa 10 8 m head EMC EN 55014 1 2006 and EN 55014 2 1997 Sound pressure level The sound pressure level of the pump is lower than 43 dB A Ambient temperature 0 to 40 C Temperature class TF110 to CEN 335 2 51 Surface temperature The maximum surface temperature will not exceed 125 C Liqui...

Страница 19: ...ensions Fig 16 Dimensional sketches ALPHA2 XX 50 XX 60 For UK only TM03 9215 3912 Pump type Dimensions L1 B1 B2 B3 B4 H1 H2 H3 G ALPHA2 15 50 130 130 78 78 46 49 27 129 58 1 1 2 ALPHA2 15 60 130 130 78 78 46 49 27 129 58 1 1 2 ALPHA2 15 50 N 130 130 47 48 26 127 1 1 2 ALPHA2 20 50 N 150 150 49 49 28 127 1 1 4 ...

Страница 20: ...s in relation to pump setting For further information about pump settings see sections 7 3 Light fields indicating the pump setting 8 Setting the pump 12 Pump settings and pump performance TM03 9161 3507 Setting Pump curve AUTOADAPT factory setting Setpoint within the green marked area PP1 Lowest proportional pressure curve PP2 Highest proportional pressure curve CP1 Lowest constant pressure curve...

Страница 21: ...rves apply to a density of ρ 983 2 kg m3 and a liquid temperature of 60 C All curves show average values and should not be used as guarantee curves If a specific minimum performance is required individual measurements must be made The curves for speeds I II and III are marked The curves apply to a kinematic viscosity of υ 0 474 mm2 s 0 474 cSt ...

Страница 22: ...XX 50 TM03 9084 3307 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 2 2 2 4 2 6 Q m h 0 1 2 3 4 5 m H 0 10 20 30 40 50 kPa p 0 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 Q l s III II I 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 2 2 2 4 2 6 Q m h 0 5 10 15 20 25 30 35 W P1 III II I ...

Страница 23: ...TM03 9085 3307 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 2 2 2 4 2 6 2 8 Q m h 0 1 2 3 4 5 6 m H 0 10 20 30 40 50 60 kPa p 0 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 Q l s III II I 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 2 2 2 4 2 6 2 8 Q m h 0 10 20 30 40 50 W P1 III II I ...

Страница 24: ...e waste collection service 2 If this is not possible contact the nearest Grundfos company or service workshop Subject to alterations TM05 8157 2013 25 XX A 3 4 529921 25 XX A 1 529922 32 XX 1 509921 32 XX 1 1 4 509922 25 XX N 3 4 529971 25 XX N 1 529972 32 XX N 1 1 4 509971 Product No Product No Product No 25 XX A N 3 4 519805 25 XX A N 1 519806 32 XX N 1 1 4 503539 Product No Product No Product N...

Страница 25: ... 448 1391 Telefax 81 35 448 9619 Korea GRUNDFOS Pumps Korea Ltd 6th Floor Aju Building 679 5 Yeoksam dong Kangnam ku 135 916 Seoul Korea Phone 82 2 5317 600 Telefax 82 2 5633 725 Latvia SIA GRUNDFOS Pumps Latvia Deglava biznesa centrs Augusta Deglava ielā 60 LV 1035 Rīga Tālr 371 714 9640 7 149 641 Fakss 371 914 9646 Lithuania GRUNDFOS Pumps UAB Smolensko g 6 LT 03201 Vilnius Tel 370 52 395 430 Fa...

Страница 26: ...19836 The name Grundfos the Grundfos logo and be think innovate are registered trademarks owned by Grundfos Holding A S or Grundfos A S Denmark All rights reserved worldwide Copyright Grundfos Holding A S www grundfos com ...

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