Grundfos Alpha2 l User manual

GRUNDFOS ALPHA2 L

Installation and operating instructions

GRUNDFOS INSTRUCTIONS

Declaration of conformity

GB: EC declaration of conformity

We, Grundfos, declare under our sole responsibility that the product

GRUNDFOS ALPHA2 L, to which this declaration relates, is in conformity

with these Council directives on the approximation of the laws of the EC

member states:

— Low Voltage Directive (2006/95/EC).

Standard used: EN 60335-2-51:2003.

— EMC Directive (2004/108/EC).

Standards used: EN 55014-1:2006 and EN 55014-2:1997.

— Ecodesign Directive (2009/125/EC).

Circulators:

Commission Regulation Nos 641/2009 and 622/2012.

Applies only to circulators marked with the energy efficiency index

EEI. See the pump nameplate.

Standards used: EN 16297-1:2012 and EN 16297-2:2012.

This EC declaration of conformity is only valid when published as part of

the Grundfos installation and operating instructions (publication number

95047490 0813).

RU: Декларация осоответствии ЕС

Мы, компания Grundfos, со всей ответственностью заявляем,

что изделия GRUNDFOS ALPHA2 L, ккоторым относится настоящая

декларация, соответствуют следующим Директивам Совета

Евросоюза об унификации законодательных предписаний

стран-членов ЕС:

—Низковольтное оборудование (2006/95/EC).

Применявшийся стандарт: EN 60335-2-51:2003.

—Электромагнитная совместимость (2004/108/EC).

Применявшиеся стандарты: EN 55014-1:2006 иEN 55014-2:1997.

—Директива по экологическому проектированию

энергопотребляющей продукции (2009/125/EC).

Циркуляционные насосы:

Постановление Комиссии №641/2009 и622/2012.

Применяется только по отношению кциркуляционным насосам,

промаркированным иимеющим индекс энергоэффективности

EEI. См. фирменную табличку насоса.

Применявшиеся стандарты: EN 16297-1:2012 и

EN 16297-2:2012.

Данная декларация осоответствии ЕС имеет силу только вслучае

публикации всоставе инструкции по монтажу иэксплуатации на

продукцию производства компании Grundfos (номер публикации

95047490 0813).

Bjerringbro, 1st August 2013

Svend Aage Kaae

Technical Director

Grundfos Holding A/S

Poul Due Jensens Vej 7

8850 Bjerringbro, Denmark

Person authorised to compile technical file and

empowered to sign the EC declaration of conformity.

Декларация осоответствии на территории РФ

Насосы серии GRUNDFOS ALPHA2 L сертифицированы всистеме

ГОСТ Р.

Сертификат соответствия:

№РОСС DK.АЯ56.B43661, срок действия до 24.04.2014г.

1 августа 2013г.

Касаткина В. В.

Руководитель отдела качества,

экологии иохраны труда

ООО Грундфос Истра, Россия

143581, Московская область,

Истринский район,

дер. Лешково, д.188

Àß56

English (GB)

English (GB) Installation and operating instructions

Original installation and operating instructions.

CONTENTS

Page

1. Symbols used in this document

1. Symbols used in this document 3

2. General description 4

2.1 Advantages of installing a GRUNDFOS ALPHA2 L 4

3. Identification 5

3.1 Nameplate 5

3.2 Type key 5

4. Applications 6

4.1 System types 6

4.2 Pumped liquids 6

4.3 System pressure 6

4.4 Relative air humidity (RH) 6

4.5 Enclosure class 6

4.6 Inlet pressure 6

5. Mechanical installation 7

5.1 Mounting 7

5.2 Control box positions 8

5.3 Changing the control box position 8

5.4 Insulation of pump housing 9

6. Electrical installation 10

7. Control panel 11

7.1 Elements on the control panel 11

7.2 "POWER ON" light field 11

7.3 Light fields indicating the pump setting 11

7.4 Push-button for selection of pump setting 11

8. Setting the pump 12

8.1 Pump setting for system type 12

8.2 Pump control 12

9. Systems with bypass valve between flow and return

pipes 13

9.1 Purpose of bypass valve 13

9.2 Manually operated bypass valve 13

9.3 Automatic bypass valve (thermostatically controlled) 13

10. Startup 14

10.1 Before start-up 14

10.2 Venting the pump 14

10.3 Venting of heating systems 14

11. Pump settings and pump performance 15

11.1 Relation between pump setting and pump performance 15

12. Fault finding 16

13. Technical data and installation dimensions 17

13.1 Technical data 17

13.2 Installation dimensions, GRUNDFOS ALPHA2 L XX-

40, XX-50, XX-60 18

14. Performance curves 19

14.1 Guide to performance curves 19

14.2 Curve conditions 19

14.3 Performance curves, ALPHA2 L XX-40 20

14.4 Performance curves, ALPHA2 L XX-50 21

14.5 Performance curves, ALPHA2 L XX-60 22

15. Accessories 23

16. Disposal 23

Warning

Prior to installation, read these installation and

operating instructions. Installation and operation

must comply with local regulations and accepted

codes of good practice.

Warning

The use of this product requires experience with

and knowledge of the product.

Persons with reduced physical, sensory or

mental capabilities must not use this product,

unless they are under supervision or have been

instructed in the use of the product by a person

responsible for their safety.

Children must not use or play with this product.

Warning

If these safety instructions are not observed,

it may result in personal injury.

Warning

If these instructions are not observed, it may lead

to electric shock with consequent risk of serious

personal injury or death.

Caution

If these safety instructions are not observed,

it may result in malfunction or damage to the

equipment.

Note

Notes or instructions that make the job easier

and ensure safe operation.

English (GB)

2. General description

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 control panel.

See sections 3. Identification and 7. Control panel.

2.1 Advantages of installing a GRUNDFOS ALPHA2 L

The installation of a GRUNDFOS ALPHA2 L means

easy installation and start-up

• 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.

• Circulator pumps will be EuP-ready and comply with the

requirements as from 2015.

Fig. 1 EuP-ready label

TM05 7745 1613

English (GB)

3. Identification

3.1 Nameplate

Fig. 2 Example of nameplate

3.2 Type key

TM05 5925 2013

Pos. Description Pos. Description

1 Pump type 8 Energy efficiency index (EEI)

2 Product number 9

Rated current [A]:

• Min.: Minimum current [A]

• Max.: Maximum current [A]

3 Serial number 10

Input power P1 [W]:

• Min.: Minimum input power P1 [W]

• Max.: Maximum input power P1 [W]

Production code:

• 1st and 2nd digits = year

• 3rd 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

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

8MADE IN DENMARK

0.23 - Part 2

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 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]

English (GB)

4. Applications

4.1 System types

Fig. 3 Pumped liquids and operating conditions

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.

4.2 Pumped liquids

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

containing solid particles, fibres or mineral oil. See fig. 3.

In heating systems, the water should meet the requirements of

accepted standards on water quality in heating systems, for

example the German standard VDI 2035.

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 Enclosure class

IP42. See fig. 3.

4.6 Inlet pressure

Minimum inlet pressure in relation to liquid temperature.

See fig. 3.

TM05 8562 2413

Warning

The pump must not be used for the transfer of

flammable liquids such as diesel oil, petrol and

similar liquids.

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)

5. Mechanical installation

5.1 Mounting

Fig. 4 Mounting the GRUNDFOS ALPHA2 L

Arrows on the pump housing indicate the liquid flow direction

through the pump.

See section 13.2 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 fig. 4.

TM05 8563 2413

English (GB)

5.2 Control box positions

Fig. 5 Control box positions

5.3 Changing the control box position

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

Possible/permissible positions and the procedure of changing the

position of the control box are illustrated in fig. 5.

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.

TM05 8564 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 liquid to be pumped or

open the isolating valves when the position of the

control box has been changed.

English (GB)

5.4 Insulation of pump housing

Fig. 6 Insulation of pump housing

The heat loss from the pump and pipework 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 15. Accessories.

TM05 8561 2413

Note

Limit the heat loss from the pump housing and

pipework.

Caution

Do not insulate the control box or cover the

control panel.

English (GB)

6. Electrical installation

Fig. 7 Electrical connection

Carry out the electrical connection and protection according to

local regulations.

• The pump requires no external motor protection.

• Check that the supply voltage 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 8565 2413

Warning

The pump must be connected to earth .

The pump must be connected to an external

mains switch with a minimum contact gap of

3 mm in all poles.

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