Grundfos ALPHA1 L User manual

ALPHA1 L
Installation and operating instructions
GRUNDFOS INSTRUCTIONS

2

Table of contents
3
ALPHA1 L
English (GB)
Installation and operating instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Български (BG)
Упътване за монтаж иексплоатация . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Čeština (CZ)
Montážní a provozní návod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Eesti (EE)
Paigaldus- ja kasutusjuhend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Español (ES)
Instrucciones de instalación y funcionamiento. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Ελληνικά (GR)
Οδηγίες εγκατάστασης και λειτουργίας . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Hrvatski (HR)
Montažne i pogonske upute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Magyar (HU)
Telepítési és üzemeltetési utasítás . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Italiano (IT)
Istruzioni di installazione e funzionamento. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Lietuviškai (LT)
Įrengimo ir naudojimo instrukcija . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Latviešu (LV)
Uzstādīšanas un ekspluatācijas instrukcija . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
Polski (PL)
Instrukcja montażu i eksploatacji . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
Português (PT)
Instruções de instalação e funcionamento. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256
Română(RO)
Instrucţiuni de instalare şi utilizare . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277
Srpski (RS)
Uputstvo za instalaciju i rad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 298
Slovensko (SI)
Navodila za montažo in obratovanje . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319
Slovenčina (SK)
Návod na montáž a prevádzku . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340
Українська (UA)
Інструкції змонтажу та експлуатації . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 361
Bosanski (BS)
Montažne i pogonske upute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 382
Қазақша (KZ)
Орнату жəне пайдалану нұсқаулықтары . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 403
Shqip (SQ)
Udhëzimet e instalimit dhe funksionimit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 425

English (GB)
4
English (GB) Installation and operating instructions
Original installation and operating instructions
These installation and operating instructions describe Grundfos
ALPHA1 L.accepted
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 Symbols used in this document
1.1.1 Warnings against hazards involving risk of death or
personal injury
The text accompanying the three hazard symbols DANGER,
WARNING and CAUTION is structured in the following way:
1.1.2 Other important notes
1. General information 4
1.1 Symbols used in this document 4
2. Receiving the product 5
2.1 Inspecting the product 5
2.2 Scope of delivery 5
3. Installing the product 5
3.1 Mechanical installation 5
3.2 Pump positions 5
3.3 Control box positions 6
3.4 Insulating the pump housing 6
4. Electrical installation 6
4.1 Assembling the installer plug 7
5. Starting up the product 8
5.1 Before startup 8
5.2 Starting up the pump 8
5.3 Venting the system 8
5.4 Venting the pump 9
6. Product introduction 9
6.1 Product description 9
6.2 Applications 9
6.3 Pumped liquids 10
6.4 Identification 10
7. Control functions 11
7.1 Elements on the control panel 11
7.2 Control panel 11
7.3 Pump settings 11
7.4 Control modes 12
7.5 Pump performance 14
8. Setting the product 15
9. Fault finding the product 16
9.1 Deblocking the shaft 16
10. Technical data 17
10.1 Dimensions, ALPHA1 L XX-40, XX-60, XX-65 18
10.2 Guide to performance curves 19
10.3 Curve conditions 19
10.4 Performance curves, ALPHA1 L XX-40 (N) 20
10.5 Performance curves, ALPHA1 L XX-60 (N) 21
10.6 Performance curves, ALPHA1 L XX-65 (N) 22
11. Accessories 23
11.1 Unions and valve kits 23
11.2 Insulating shells 23
11.3 Power supply 24
11.4 Control signal connection (PWM profile A) 24
12. Disposing of the product 24
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.
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.

English (GB)
5
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
6.4.1 Nameplate.
2.2 Scope of delivery
The box contains the following items:
• ALPHA1 L pump
• installer plug
• two gaskets
• quick guide.
3. Installing the product
3.1 Mechanical installation
3.1.1 Mounting the product
1. The arrows on the pump housing indicate the flow direction
through the pump. See fig. 1.
2. Fit the two gaskets when you mount the pump in the pipe.
Install the pump with a horizontal motor shaft. See fig. 2. See
also section 3.3 Control box positions.
3. Tighten the fittings. See fig. 3.
Fig. 1 Flow direction
Fig. 2 Pump installation
Fig. 3 Tightening the fittings
3.2 Pump positions
Always install the pump with a horizontal motor shaft. Do not
install the pump with a vertical motor shaft. See fig. 4, bottom row.
• Pump installed correctly in a vertical pipe. See fig. 4, top row,
left.
• Pump installed correctly in a horizontal pipe. See fig. 4, top
row, right.
Fig. 4 Pump positions
TM06 8535 1317TM06 8536 1317
TM06 8537 1317TM06 8538 1317

English (GB)
6
3.3 Control box positions
The control box can be mounted in all positions. See fig. 5.
Fig. 5 Possible control box positions
3.3.1 Changing the control box position
3.4 Insulating the pump housing
Fig. 6 Insulating the pump housing
You can reduce the heat loss from the pump and pipe by
insulating the pump housing and the pipe with insulating shells,
which can be ordered as an accessory. 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 7297 3616
Step Action Illustration
1
Make sure that
the inlet and
outlet valves
are closed.
Unscrew the
screws on the
pump head.
TM06 8539 1317
2
Turn the pump
head to the
desired
position.
TM06 8540 1317
3
Refit the
screws on the
pump head.
TM06 8541 1317
TM06 8564 1317
Do not insulate the control box or cover the control
panel.
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.
Connect the pump to an external main switch with
a minimum contact gap of 3 mm in all poles.

English (GB)
7
4.1 Assembling the installer plug
Step Action Illustration
1
Loosen the cable
gland and
unscrew the union
nut in the centre
of the terminal
cover.
TM06 8542 1317
2Detach the
terminal cover.
TM06 8543 1317
3
Pull the power
cable through the
cable gland and
terminal cover.
TM06 8544 1317
4
Strip the cable
conductors as
illustrated.
TM06 8545 1317
5
Loosen the
screws on the
power supply plug
and connect the
cable conductors.
TM06 8546 1317 - TM06 8547 1317
6
Tighten the
screws on the
power supply
plug.
TM06 8548 1317
17 mm
12 mm
Ø 5.5 - 10 mm
Max. 1.5 mm2
x 3
x 3
7
Refit the terminal
cover. See A.
Note: It is possible
to turn the power
supply plug on the
side for a 90 °
cable entry. See
B.
TM06 8549 1317 - TM06 8550 1317
8Tighten the union
nut.
TM06 8551 1317
9
Tighten the cable
gland onto the
power supply
plug.
TM06 8552 1317
10
Insert the power
supply plug into
the male plug on
the pump.
TM06 8553 1317
Step Action Illustration
B
A

English (GB)
8
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 10. Technical data.
When using the pump for the first time, the system must be
vented at the highest point. See section 5.3 Venting the system.
The pump is self-venting through the system.
5.2 Starting up the pump
5.3 Venting the system
Fig. 7 Venting the system
When the system has been filled with liquid and the minimum
inlet pressure is available at the pump inlet, do as follows:
1. If turned off, turn on the pump. See section 5.2 Starting up the
pump.
2. If the vent valve is installed in the system, open up the valve
manually. See fig. 7, 1A. If the pump housing has an air
separator installed (ALPHA1 L XX-XX A) and an automatic
vent has been fitted, the air escapes automatically. See fig. 7,
1B.
3. Set the pump to speed III. See fig. 7, 2.
4. Let the pump run for approximately 10 minutes. See fig. 7, 3.
Repeat step 1-3, if necessary.
5. Set the pump according to the recommendations. See section
7. Control functions.
Step Action Illustration
1Open the inlet and
outlet valves.
TM06 8554 1317
2Turn on the power
supply.
TM06 8555 1317
3
The lights in the
control panel
indicates that the
power supply has
been switched on
and the pump is
running.
TM06 8556 1317
0/Off
1/On
TM06 9069 1617
In heating systems that often contain much air, we
recommend that you install pumps with pump
housing with air separator, that is ALPHA1 L XX-XX
A. The pump housing has an Rp 3/8 tapping for fitting
of an automatic air vent. The vent is not supplied with
the pump.
The pump must not run dry.
= 10 min.
2
1A 1B
3

English (GB)
9
5.4 Venting the pump
Fig. 8 Venting the pump
Small airlocks trapped inside the pump may cause noise when
starting up the pump. However, because the pump is self-venting
through the system, the noise ceases over a period of time.
To speed up the venting process, do as follows:
1. Set the pump to speed III for approximately 10 minutes. How
fast the pump is vented depends on the system size and
design.
2. When you have vented the pump, that is when the noise has
ceased, set the pump according to the recommendations. See
section 7. Control functions.
6. Product introduction
6.1 Product description
ALPHA1 L model C is a complete range of circulator pumps.
See section 10. Technical data for further information.
6.1.1 Model type
These installation and operating instructions cover ALPHA1 L
model C. The model type is stated on the packaging.
6.2 Applications
The ALPHA1 L is designed for circulating liquids in all kinds of
heating applications. The pumps are suitable for the following
systems:
• Systems with constant or variable flows where it is desirable to
optimise the pump duty point.
• Systems with variable flow-pipe temperature.
ALPHA1 L is especially suitable for the following:
• Installation in existing systems where the differential pressure
of the pump is too high during periods of reduced flow
demand.
• Installation in new systems for automatic adjustment of the
performance to flow demands without the use of bypass
valves or similar expensive components.
High-efficiency ECM (Electronically Commutated Motor) pumps,
such as ALPHA1 L, must not be speed-controlled by an external
speed controller varying or pulsing the supply voltage.
The speed can be controlled by a low-voltage PWM (Pulse Width
Modulation) signal.
TM06 8575 1617
The pump must not run dry.
The pump is from factory set to radiator heating
mode.
= 10 min.
1
2
TM06 8557 1317
75 °C 95 °C
0.005 MPa 0.05 MPa
0.05 bar 0.5 bar
Max. 1.0 MPa (10 bar)
Min. 2 °C 0 °C
Max.95 °C 55 °C

English (GB)
10
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 clean, thin, non-aggressive and
non-explosive liquids, not containing solid particles, fibres or
mineral oil. The pump must not be used for the transfer of
flammable liquids, such as diesel oil, petrol and similar liquids.
• Maximum water/propylene glycol mixture is 50 %
• Maximum 10 mm2/s viscosity
Note: The water/propylene glycol mixture reduces the
performance due to higher viscosity.
See section 10. Technical data for further information.
6.4 Identification
6.4.1 Nameplate
Fig. 9 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 above 50 °C
due to the risk of legionella.
WARNING
Biological hazard
Death or serious personal injury
- In domestic hot-water systems, the pump is
permanently connected to the mains water.
Therefore, do not connect the pump by a hose.
CAUTION
Corrosive substance
Minor or moderate personal injury
- Do not use the pump for aggressive liquids, such
as acids and seawater.
TM06 8664 1717
Pos. Description
1 Pump name
2 Minimum current [A]
3 Maximum current [A]
4 CE mark and approvals
5 Energy Efficiency Index, EEI
6 Voltage [V]
7 Product number
8 Serial number
9 Country of manufacture
10 Frequency [Hz]
11 Part, according to EEI
12 Enclosure class
13 Manufacturer’s name and address
14 Minimum input power [W]
15 Maximum input power [W]
16 Maximum system pressure
17 VDE code
18 Average compensated power input PL, avg [W]
19 TF class
20 Minimum liquid temperature
21
Production code:
• 1st and 2nd figures: year
• 3rd and 4th figures: week
1
l1/1(A)
Grundfos Holding A/S,
DK-8850 Bjerringbro
P1(W) MPa
Min.
Max.
X.XX
X.XX
XX
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