Grundfos ALPHA1 B Bedienungsanleitung

ALPHA1

Model B

Installation and operating instructions

GRUNDFOS INSTRUCTIONS

English (GB)

English (GB) Installation and operating instructions

Original installation and operating instructions

These installation and operating instructions describe ALPHA1

model B.

Sections 1-5 give the information necessary to be able to unpack,

install and start up the product in a safe way.

Sections 6-12 give important information about the product, as

well as information on service, fault finding and disposal of the

product.

CONTENTS

Page

1. General information

1.1 Target group

1.2 Hazard statements

The symbols and hazard statements below may appear in

Grundfos installation and operating instructions, safety

instructions and service instructions.

The hazard statements are structured in the following way:

1. General information 2

1.1 Target group 2

1.2 Hazard statements 2

1.3 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 Positioning the pump 4

3.3 Control box positions 4

3.4 Insulating the pump housing 5

4. Electrical installation 5

4.1 Assembling the plug 6

4.2 Dismantling the plug 6

5. Starting up the product 7

5.1 Before startup 7

5.2 First startup 7

5.3 Venting the pump 7

6. Product introduction 8

6.1 Product description 8

6.2 Applications 8

6.3 Pumped liquids 9

6.4 Identification 9

7. Control functions 10

7.1 Elements on the operating panel 10

7.2 Display 10

7.3 Light fields indicating the pump setting 10

7.4 Button for selection of pump setting 10

7.5 Control modes 11

7.6 Pump performance 13

8. Fault finding the product 14

9. Technical data 15

9.1 Data and operating conditions 15

9.2 Dimensions 16

10. Performance curves 17

10.1 Guide to performance curves 17

10.2 Curve conditions 17

10.3 Performance curves, ALPHA1, XX-40 (N) 18

10.4 Performance curves, ALPHA1, XX-50 (N) 19

10.5 Performance curves, ALPHA1, XX-60 (N), XX-50/60 20

10.6 Performance curves, ALPHA1, XX-80 (N) 21

11. Accessories 22

11.1 Unions 22

11.2 Insulating shells 23

11.3 ALPHA plugs 23

12. Disposing of the product 23

Read this document and the quick guide before

installing 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)

1.3 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 the

voltage and frequency of the installation site. See section

6.4.1 Nameplate.

2.2 Scope of delivery

The box contains the following items:

• ALPHA1 pump

• ALPHA plug

• insulating shells

• two gaskets

• quick guide.

3. Installing the product

3.1 Mechanical installation

3.1.1 Mounting the product

Fig. 1 Mounting the product

The arrows on the pump housing indicate the flow direction

through the pump. See fig. 1(A).

1. Fit the two gaskets when you mount the pump in the pipe. See

fig. 1(B).

2. Install the pump with a horizontal motor shaft. See fig. 1(C).

See also section 3.3 Control box positions.

3. Tighten the fittings.

Observe these instructions for explosion-proof

products.

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.

TM07 1193 1118

English (GB)

3.2 Positioning the pump

Fig. 2 Control box positions

Always install the pump with a horizontal motor shaft.

• Pump installed correctly in a vertical pipe. See fig. 2(A).

• Pump installed correctly in a horizontal pipe. See fig. 2(B).

• Do not install the pump with a vertical motor shaft. See fig. 2

(C and D).

3.3 Control box positions

3.3.1 Positioning of the control box in heating and domestic

hot-water systems

You can position the control box so that the plug is positioned at

3, 6 and 9 o'clock. See fig. 3.

Fig. 3 Control box positions, heating and domestic hot-water

systems

3.3.2 Positioning the control box in air-conditioning and

cold-water systems

Position the control box so that the plug is pointing downwards.

See fig. 4.

Fig. 4 Control box position, air-conditioning and cold-water

systems

3.3.3 Changing the control box position

Fig. 5 Changing the control box position

You can turn the control box in steps of 90 °.

1. Remove the four screws.

2. Turn the pump head to the desired position.

3. Insert and cross-tighten the screws.

TM06 9089 4317TM06 9090 4317TM06 9091 4317

WARNING

Pressurised system

Minor or moderate personal injury

- Before dismantling the pump, drain the system or

close the isolating valves on either side of the

pump. The pumped liquid may be scalding hot and

under high pressure.

CAUTION

Hot surface

Minor or moderate personal injury

- Position the pump so that persons cannot

accidentally come into contact with hot surfaces.

If you change the position of the control box, fill the

system with the liquid to be pumped or open the

isolating valves.

TM06 9092 4317

English (GB)

3.4 Insulating the pump housing

Fig. 6 Insulating the pump housing

You can reduce the heat loss from the pump by insulating the

pump housing with the insulating shells supplied with the pump.

See fig. 6.

4. Electrical installation

Carry out the electrical connection and protection in accordance

with local regulations.

• The motor requires no external motor protection.

• Check that the supply voltage and frequency correspond to

the values stated on the nameplate. See section

6.4.1 Nameplate.

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

with the pump. See steps 1 to 7.

TM06 9093 4317

Do not insulate the control box or cover the operating

panel.

WARNING

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.

WARNING

Electric shock

Death or serious personal injury

- Connect the pump to earth.

Connect the pump to an external main switch with

a minimum contact gap of 3 mm in all poles.

WARNING

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

electrical 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;

English (GB)

4.1 Assembling the plug

4.2 Dismantling 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

Screw the cable

gland onto the

power supply plug.

TM05 5543 3812

0.5 - 1.5 mm2

12 mm

∅5.5 - 10 mm

7 mm

17 mm

Insert the power

supply plug into

the male plug in

the pump control

box.

TM07 1194 1118

Step Action Illustration

Loosen the cable

gland and remove it

from the plug.

TM05 5545 3812

Pull off the plug

cover while pressing

on both sides.

TM05 5546 3812

Add the conductor

guide plate to loosen

all three cable

conductors at the

same time.

If the guide plate is

missing, then loosen

the cable conductors

one by one by

pressing a

screwdriver gently

into the terminal clip.

TM05 5547 3812

The plug has now

been removed from

the power supply

plug.

TM05 5548 3812

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. Make sure that the required minimum inlet pressure

is available at the pump inlet. See section 9. Technical data. For

instructions on how to vent the system, see section 5.3 Venting

the pump.

5.2 First startup

After installing the product, see section 3. Installing the product,

turn on the power supply. The light in the operating panel shows

that the power supply has been switched on. See fig. 7.

The pump is factory set to intermediate proportional-pressure

curve, PP2.

Fig. 7 Starting the pump

5.3 Venting the pump

Fig. 8 Venting the pump

The pump is self-venting through the system. You do not have to

vent the pump before startup.

Air in the pump may cause noise. This noise ceases when the

pump has run for a few minutes.

You obtain quick venting of the pump by setting the pump to

speed III. How fast the pump is vented depends on the system

size and design.

When you have vented the pump, i.e. when the noise has

ceased, set the pump according to the recommendations. See

section 7. Control functions.

You cannot vent the system through the pump. See section

6. Product introduction.

TM06 9094 4317

1 x 230 V± 10 %

∽50/60 Hz

0/O

1/On

TM06 9104 4317

The pump must not run dry.

English (GB)

6. Product introduction

6.1 Product description

Fig. 9 Pumped liquids, warnings and operating conditions

ALPHA1 pumps are a complete range of circulator pumps.

6.1.1 Model type

These installation and operating instructions cover ALPHA1

model B. The model type is stated on the packaging and

nameplate. See figs 10 and 11.

Fig. 10 Model type on the packaging

Fig. 11 Model type on the nameplate

6.2 Applications

The pump is designed for the circulation of water in heating

systems, domestic hot-water systems as well as air-conditioning

and cold-water systems.

Cold-water systems are defined as systems where the ambient

temperature is higher than the temperature of the pumped liquid.

The pump is the best choice for the following systems:

• underfloor heating systems

• one-pipe systems

• two-pipe systems.

The pump is suitable for the following:

• Systems with constant or variable flow rates where you want

to optimise the setting of the pump duty point.

• Systems with variable flow-pipe temperature.

TM06 9095 4317TM06 9106 4317

TM06 9103 4317

English (GB)

6.3 Pumped liquids

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.

The pump is suitable for the following liquids:

• Thin, clean, non-aggressive and non-explosive liquids, not

containing solid particles or fibres.

• Cooling liquids, not containing mineral oil.

• Domestic hot water

Maximum: 14 °dH

Maximum: 65 °C

Maximum peak: 70 °C.

For water with a higher degree of hardness, we recommend

that you use a direct-coupled TPE pump.

• Softened water.

The kinematic viscosity of water is 1 mm2/s (1 cSt) at 20 °C. If the

pump is used for a liquid with a higher viscosity, the hydraulic

performance of the pump will be reduced.

Example: 50 % glycol at 20 °C means a viscosity of approx. 10

mm2/s (10 cSt) and a reduction of the pump performance by

approx. 15 %.

Do not use additives that can or will disturb the functionality of the

pump.

When selecting a pump, take the viscosity of the pumped liquid

into consideration.

For more information about the pumped liquids, warnings and

operating conditions, see fig. 9.

6.4 Identification

6.4.1 Nameplate

Fig. 12 Nameplate

CAUTION

Flammable material

Minor or moderate personal injury

- Do not use the pump for flammable liquids, such

as diesel oil and petrol.

WARNING

Biological hazard

Death or serious personal injury

- In domestic hot-water systems, the temperature of

the pumped liquid must always be according to

local legislation.

CAUTION

Corrosive substance

Minor or moderate personal injury

- Do not use the pump for aggressive liquids, such

as acids and seawater.

TM07 0628 1118

Pos. Description

1 Minimum rated current [A]

2 Maximum rated current [A]

3 CE mark and approvals

4 EEI: Energy Efficiency Index

5 Voltage [V]

6 Product number

7 Serial number

8 Pump model

9 Country of origin

10 Frequency [Hz]

11 Data matrix code

12 Grundfos address

Production code:

• 1st and 2nd figures: year

• 3rd and 4th figures: week

14 Temperature class

15 Enclosure class

16 Part, according to EEI

17 Crossed-out wheeled bin according to EN

50419:2006

18 Maximum system pressure [MPa]

19 Maximum input power P1 [W]

20 Minimum input power P1 [W]

21 Product type

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English (GB)

6.4.2 Type key

7. Control functions

7.1 Elements on the operating panel

Fig. 13 Operating panel

7.2 Display

The display (1) is on when you have switched on the power

supply.

The display shows the actual pump power consumption in watt.

If the pump impeller is rotated, for example when filling the pump

with water, sufficient energy can be generated to light up the

display even if the power supply has been switched off.

7.3 Light fields indicating the pump setting

The pump has nine performance settings which you can select

with the button. See fig. 13 (5).

The pump setting is indicated by nine light fields in the display.

See fig. 14.

Fig. 14 Nine light fields

For information about the function of the settings, see section

7.5 Control modes.

7.4 Button for selection of pump setting

Every time you press the button , the pump setting is changed.

See fig. 13 (5).

A cycle is nine button presses. See section 7.3 Light fields

indicating the pump setting.

Example ALPHA1 25 -40 N 180

Pump type

[ ]: Standard version

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]

TM06 9101 4317

Pos. Description

1 Display showing the actual power consumption in watt.

2Light fields indicating the pump setting.

See section 7.3 Light fields indicating the pump setting.

3 Button for selection of pump setting.

TM06 9100 4317

Button

presses

Active light

fields Description

Factory setting Intermediate

proportional-pressure curve,

PP2

Highest

proportional-pressure curve,

PP3

Lowest constant-pressure

curve, CP1

Intermediate

constant-pressure curve,

CP2

Highest constant-pressure

curve, CP3

Constant curve/constant

speed III

Constant curve/constant

speed II

Constant curve/constant

speed I

8Lowest proportional-pressure

curve, PP1

POWER

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