Grundfos Alpha2 l Bedienungsanleitung

GRUNDFOS ALPHA2 L

Installation and operating instructions

GRUNDFOS INSTRUCTIONS

English (GB)

English (GB) Installation and operating instructions

Original installation and operating instructions

CONTENTS

Page

1. General information

1.1 Hazard statements

The symbols and hazard statements below may appear in

Grundfos installation and operating instructions, safety

instructions and service instructions.

The text accompanying the three hazard symbols DANGER,

WARNING and CAUTION is structured in the following way:

The hazard statements are structured in the following way:

1. General information 2

1.1 Hazard statements 2

1.2 Notes 3

2. Receiving the product 3

2.1 Inspecting the product 3

2.2 Scope of delivery 3

3. Installing the product 3

3.1 Mechanical installation 3

3.2 Mounting 3

3.3 Control box positions 4

3.4 Changing the control box position 5

3.5 Insulation of pump housing 5

4. Electrical installation 5

4.1 Assembling the plug 6

5. Starting up the product 7

5.1 Before startup 7

5.2 Venting the pump 7

5.3 Venting of heating systems 7

6. Product introduction 8

6.1 Product description 8

6.2 Application 8

6.3 Advantages of installing a GRUNDFOS ALPHA2 L 8

6.4 Intended use 8

6.5 Pumped liquids 8

6.6 System pressure 8

6.7 Relative air humidity (RH) 8

6.8 Enclosure class 8

6.9 Inlet pressure 8

7. Identification 9

7.1 Nameplate 9

7.2 Type key 9

8. Accessories 10

9. Operating panel 11

9.1 Elements on the operating panel 11

9.2 "POWER ON" light field 11

9.3 Light fields indicating the pump setting 11

9.4 Push-button for selection of pump setting 11

10. Setting the pump 12

10.1 Pump setting for system type 12

10.2 Pump control 12

11. Systems with bypass valve between flow and return

pipes 13

11.1 Purpose of bypass valve 13

11.2 Manually operated bypass valve 13

11.3 Automatic bypass valve (thermostatically controlled) 13

12. Pump settings and pump performance 14

12.1 Relation between pump setting and pump performance 14

13. Fault finding the product 15

13.1 Fault finding table 15

14. Technical data and installation dimensions 16

14.1 Technical data 16

14.2 Installation dimensions, GRUNDFOS ALPHA2 L XX-

40, XX-50, XX-60 17

15. Performance curves 18

15.1 Guide to performance curves 18

15.2 Curve conditions 18

15.3 Performance curves, ALPHA2 L XX-40 19

15.4 Performance curves, ALPHA2 L XX-50 19

15.5 Performance curves, ALPHA2 L XX-60 20

16. Disposing of the product 20

Read this document and the quick guide before you

install the product. Installation and operation must

comply with local regulations and accepted codes of

good practice.

This appliance can be used by children aged from 8

years and above and persons with reduced physical,

sensory or mental capabilities or lack of experience

and knowledge if they have been given supervision

or instruction concerning use of the appliance in a

safe way and understand the hazards involved.

Children shall not play with the appliance. Cleaning

and user maintenance shall not be made by children

without supervision.

DANGER

Indicates a hazardous situation which, if not avoided,

will result in death or serious personal injury.

WARNING

Indicates a hazardous situation which, if not avoided,

could result in death or serious personal injury.

CAUTION

Indicates a hazardous situation which, if not avoided,

could result in minor or moderate personal injury.

SIGNAL WORD

Description of hazard

Consequence of ignoring the warning.

- Action to avoid the hazard.

English (GB)

1.2 Notes

The symbols and notes below may appear in Grundfos

installation and operating instructions, safety instructions and

service instructions.

2. Receiving the product

2.1 Inspecting the product

Check that the product received is in accordance with the order.

Check that the voltage and frequency of the product match

voltage and frequency of the installation site. See section

7.1 Nameplate.

2.2 Scope of delivery

The box contains the following items:

• ALPHA2 L pump

• installer plug

• two gaskets

• quick guide.

3. Installing the product

3.1 Mechanical installation

3.2 Mounting

A blue or grey circle with a white graphical symbol

indicates that an action must be taken.

A red or grey circle with a diagonal bar, possibly with

a black graphical symbol, indicates that an action

must not be taken or must be stopped.

If these instructions are not observed, it may result in

malfunction or damage to the equipment.

Tips and advice that make the work easier.

CAUTION

Crushing of feet

Minor or moderate personal injury

- Wear safety shoes when opening the box and

handling the product.

DANGER

Electric shock

Death or serious personal injury

- Switch off the power supply before starting any

work on the product. Make sure that the power

supply cannot be accidentally switched on.

CAUTION

Crushing of feet

Minor or moderate personal injury

- Wear safety shoes when opening the box and

handling the product.

Installation must be carried out by trained persons in

accordance with local regulations.

The pump must always be installed with a horizontal

motor shaft within ± 5 °.

The mechanical installation must be carried out by

trained persons in accordance with local regulations.

TM07 4154 1119

0/Off

1/On

English (GB)

Fig. 1 Mounting the GRUNDFOS ALPHA2 L

Fig. 2 Mounting the GRUNDFOS ALPHA2 L

Arrows on the pump housing indicate the liquid flow direction

through the pump.

See section 14.2 Installation dimensions, GRUNDFOS ALPHA2 L

XX-40, 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 figs 1and 2.

3.3 Control box positions

Fig. 3 Control box positions

TM07 4156 1119

TM07 4155 1119

TM07 4157 1119TM07 4158 1119

DANGER

Electric shock

Death or serious personal injury

- Switch off the power supply before starting any

work on the product. Make sure that the power

supply cannot be accidentally switched on.

CAUTION

Hot surface

Minor or moderate personal injury

- The pump housing may be hot due to the pumped

liquid being scalding hot. Close the isolating valves

on both sides of the pump and wait for the pump

housing to cool down.

CAUTION

Pressurised system

Minor or moderate personal injury

- Before dismantling the pump, drain the system or

close the isolating valves on both sides of the

pump. The pumped liquid may be scalding hot

and under high pressure.

English (GB)

3.4 Changing the control box position

The control box position can be changed in steps of 90 °.

Possible or permissible positions and the procedure of changing

the position of the control box are illustrated in fig. 3.

Procedure:

1. Slacken 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.

3.5 Insulation of pump housing

Fig. 4 Insulation of pump housing

The heat loss from the pump and pipes can be reduced by

insulating the pump housing and the pipe. See fig. 4.

As an alternative, polystyrene insulating shells can be fitted to the

pump. See section 8. Accessories.

4. Electrical installation

The pump requires no external motor protection.

• Check that the supply voltage and frequency correspond to

the values stated on the nameplate. See section

7.1 Nameplate.

• Connect the pump to the power supply with the plug supplied

with the pump as shown in section 4.1 Assembling the plug

Light in the operating panel shows that the power supply has

been switched on.

Fill the system with the liquid to be pumped or open

the isolating valves when the position of the control

box has been changed.

TM05 8561 2413

Limit the heat loss from the pump housing and pipes.

Do not insulate the control box or cover the operating

panel.

DANGER

Electric shock

Death or serious personal injury

- All electrical connections must be carried out by a

qualified electrician in accordance with local

regulations.

DANGER

Electric shock

Death or serious personal injury

- Switch off the power supply before starting any

work on the product. Make sure that the power

supply cannot be accidentally switched on.

DANGER

Electric shock

Death or serious personal injury

- Connect the pump to earth.

DANGER

Electric shock

Death or serious personal injury

- If national legislation requires a Residual-Current

Device (RCD) or equivalent in the electrical

installation, or if the pump is connected to an

electric installation where an RCD is used as an

additional protection, this must be type A or better,

due to the nature of the pulsating DC leakage

current. The RCD must be marked with the symbol

shown below:

The pump is not a safety component and cannot be

used to ensure functional safety in the final

appliance.

English (GB)

4.1 Assembling the plug

Step Action Illustration

Fit the cable gland

and plug cover to

the cable. Strip the

cable conductors as

illustrated.

TM05 5538 3812

Connect the cable

conductors to the

power supply plug.

TM05 5539 3812

Bend the cable with

the cable

conductors pointing

upwards.

TM05 5540 3812

Pull out the

conductor guide

plate and throw it

away.

TM05 5541 3812

Click the plug cover

onto the power

supply plug.

TM05 5542 3812

12 mm

17 mm

7 mm

Ø 5.5 -10 mm

0.5 - 1.5 mm2

Screw the cable

gland onto the

power supply plug.

TM05 5543 3812

Insert the power

supply plug into the

male plug in the

pump control box.

TM07 4159 1119

Step Action Illustration

English (GB)

5. Starting up the product

5.1 Before startup

Do not start the pump until the system has been filled with liquid

and vented. The required minimum inlet pressure must be

available at the pump inlet. See section 14. Technical data and

installation dimensions.

5.2 Venting the pump

Fig. 5 Venting the pump

The pump is self-venting. It does not need to be vented before

startup.

Air in the pump may cause noise. This noise will cease after a few

minutes running.

Quick venting of the pump can be obtained by setting the pump to

speed III for a short period, depending on system size and

design.

When the pump has been vented, that is when the noise has

ceased, set the pump according to the recommendations. See

section 10. Setting the pump.

The system cannot be vented through the pump. See section

12. Pump settings and pump performance.

5.3 Venting of heating systems

Fig. 6 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, follow this procedure:

1. Open the air escape valve.

2. Set the pump to speed III.

3. Let the pump run for a short period, depending on system size

and design.

4. When the system has been vented, that is when the possible

noise has ceased, set the pump according to the

recommendations. See section 10. Setting the pump.

Repeat the procedure, if necessary.

TM05 8676 2613

The pump must not run dry.

TM05 8560 2613

The pump must not run dry.

English (GB)

6. Product introduction

6.1 Product description

Fig. 7 Pumped liquids and operating conditions

6.2 Application

The GRUNDFOS ALPHA2 L circulator pump is designed for the

circulation of water in heating systems.

The pump is suitable for the following systems:

• underfloor heating systems

• one-pipe systems

• two-pipe systems.

The pump incorporates a permanent-magnet motor and

differential-pressure control enabling continuous adjustment of

the pump performance to the actual system requirements.

The pump has a user-friendly front-mounted operating panel. See

sections 7. Identification and 9. Operating panel.

6.3 Advantages of installing a GRUNDFOS ALPHA2 L

The installation of a GRUNDFOS ALPHA2 L means

Easy installation and startup

• The pump is easy to install.

With the 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 circulator

pumps.

Energy efficiency index (EEI)

• The Ecodesign directive for energy-using (EuP) and energy-

related (ErP) products is EU legislation requiring

manufacturers to reduce the overall environmental impact of

their products.

• The pumps are energy-optimised and comply with the

regulations of the EuP directive.

6.4 Intended use

GRUNDFOS ALPHA2 L is suitable for

• systems with constant or variable flows where it is desirable to

optimise the setting of the pump duty point.

• systems with variable flow-pipe temperature.

6.5 Pumped liquids

Clean, thin, non-aggressive and non-explosive liquids, not

containing solid particles, fibres or mineral oil. See fig. 7.

In heating systems, the water must meet the requirements of

accepted standards on water quality in heating systems, for

example the German standard VDI 2035.

6.6 System pressure

Maximum 1.0 MPa (10 bar). See fig. 7.

6.7 Relative air humidity (RH)

Maximum 95 %. See fig. 7.

6.8 Enclosure class

IP42. See fig. 7.

6.9 Inlet pressure

Minimum inlet pressure in relation to liquid temperature. See fig.

TM07 4160 1119

75 °C

Min.

0.005 MPa

0.05 bar

90 °C 110 °C

Min.

0.028 MPa

0.28 bar

Min.

0.108 MPa

1.08 bar

0.0 0.4 0.8 1.2 1.6 2.0 2.4 Q [m³/h]

[m]

[kPa]

0.0 0.2 0.4 0.6

Q [l/s]

ALPHA1 /ALPHA2/ALPHA2 L XX-50

ALPHA1 /ALPHA2/ALPHA2 L XX-40 / XX-45

ALPHA1 /ALPHA2/ALPHA2 L XX-60

Max. 1.0 MPa

(10 bar)

< 43 dB(A)

Min./Max.

+2 °C / +110 °C

Min./Max.

0 °C / +40 °C

Max. 95 % RH

IP42

CAUTION

Flammable material

Minor or moderate personal injury.

- Do not use the pump for flammable liquids, such

as diesel oil and petrol.

CAUTION

Corrosive substance

Minor or moderate personal injury.

- Do not use the pump for aggressive liquids, such

as acids and seawater.

Liquid

temperature

Minimum inlet pressure

[MPa] [bar]

≤75 °C 0.005 0.05

90 °C 0.028 0.28

110 °C 0.108 1.08

English (GB)

7. Identification

7.1 Nameplate

Fig. 8 Example of nameplate

7.2 Type key

TM05 5925 1019

Pos. Description

1 Pump type

2 Product number

3 Serial number

Production code:

• 1st and 2nd digits = year

• 3rd and 4th digits = week

5Enclosureclass

6 Voltage [V]

7 Frequency [Hz]

8 Energy efficiency index (EEI)

Rated current [A]:

• Min.: Minimum current [A]

• Max.: Maximum current [A]

Input power P1 [W]:

• Min.: Minimum input power P1 [W]

• Max.: Maximum input power P1 [W]

11 Maximum system pressure [MPa]

12 CE mark and approvals

13 Country of manufacture

14 Temperature class

Prod. No. 95047562

00000001

Serial No.

PC 0833 TF110

IP 42 230V ~ 50Hz Max.

Min. 0.05

I1/1(A) P1(W) MPa

22 1.0

0.19

KM07183

910 11

1314

8MADE IN DENMARK

ALPHA2 25-40 180

AUTO

ADAPT

ALPHA2L 25-40 180

POWER

ALPHA2 L 25-40 180

Example ALPHA2 L 25 -40 180

Pump type

Nominal diameter (DN) of inlet and outlet ports

[mm]

Maximum head [dm]

: Cast-iron pump housing

N: Stainless-steel pump housing

Port-to-port length [mm]

English (GB)

8. Accessories

Accessories for GRUNDFOS ALPHA2 L. See fig. 9.

Accessories include

• fittings (unions and valves)

• insulating kits (insulating shells)

•plug.

Fig. 9 Accessories

TM07 4161 1119

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

25-XX (A)(N) 3/4" 519805

25-XX (A)(N) 1" 519806

32-XX (N) 1 1/4" 505539

Product No

15-XX 130

25-XX 130 505821

32-XX 130

15-XX A 180

25-XX A 180 505822

15-XX

25-XX 98284561

32-XX

Product No

15-XX

25-XX 98610291

32-XX

Andere Handbücher für alpha2 l

Dieses Handbuch passt für folgende Modelle

Inhaltsverzeichnis

Andere Grundfos Wasserpumpe Handbücher

Grundfos

Grundfos MQ 3-35 Bedienungsanleitung

Grundfos

Grundfos ALPHA1 B Bedienungsanleitung

Grundfos

Grundfos MixiMizer Betriebsanleitung

Grundfos

Grundfos CRN-H MAGdrive Bedienungsanleitung

Grundfos

Grundfos CREC Bedienungsanleitung

Grundfos

Grundfos MAGNA 2000 Series Bedienungsanleitung

Grundfos

Grundfos Magna Benutzerhandbuch

Grundfos

Grundfos Unilift AP12 Bedienungsanleitung

Grundfos

Grundfos SMART Digital XL DDE Betriebsanleitung

Grundfos

Grundfos SE1 50 Bedienungsanleitung

Grundfos

Grundfos UPM3S Series Installations- und Betriebshandbuch

Grundfos

Grundfos CRN MAGdrive Bedienungsanleitung

Grundfos

Grundfos CRE Series Bedienungsanleitung

Grundfos

Grundfos LT 200 Bedienungsanleitung

Grundfos

Grundfos NB Bedienungsanleitung

Grundfos

Grundfos Hydro Multi-B Bedienungsanleitung

Grundfos

Grundfos UP XL Bedienungsanleitung

Grundfos

Grundfos SE Series Bedienungsanleitung

Grundfos

Grundfos rmq-a Bedienungsanleitung

Grundfos

Grundfos ZEM 2-13C Bedienungsanleitung

Grundfos

Grundfos MAGNA3 25-100 (N) Bedienungsanleitung

Grundfos

Grundfos MAGNA1 D Betriebsanleitung

Grundfos

Grundfos Unilift AP12 Bedienungsanleitung

Grundfos

Grundfos SB Bedienungsanleitung

Beliebte Wasserpumpe Handbücher anderer Marken

Neptun

Neptun NPHW 5500 Bedienungsanleitung

Sensidyne

Sensidyne Gilian BDX-II Montage- und Bedienungsanleitung

Draper

Draper 47808 Bedienungsanleitung

Trolla

Trolla 12820 Bedienungsanleitung

Sunfab

Sunfab SVH Series Bedienungsanleitung

WilTec

WilTec 50740 Bedienungsanleitung

Fieldmann

Fieldmann FVC 5015 EK Bedienungsanleitung

Everbilt

Everbilt EFSUB5-122HD Bedienungsanleitung

Graco

Graco Husky 3300e Bedienungsanleitung

esotec

esotec 101018 Bedienungsanleitung

Becker

Becker BASIC VASF 2.80/1-0.AC230 Bedienungsanleitung

Sykes AmeriPumps

Sykes AmeriPumps GP100M Fehlerbehebungshandbuch

DUROMAX

DUROMAX XP WX Series Bedienungsanleitung

BRINKMANN PUMPS

BRINKMANN PUMPS SBF550 Bedienungsanleitung

Franklin Electric

Franklin Electric IPS Bedienungsanleitung

Xylem

Xylem e-1532 Series Bedienungsanleitung

Milton Roy

Milton Roy PRIMEROYAL Bedienungsanleitung

STA-RITE

STA-RITE ST33APP Bedienungsanleitung

Grundfos alpha2 l Bedienungsanleitung

Beliebte Wasserpumpe Handbücher anderer Marken