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English (US)

English (US) 

Installation and operating instructions

Original installation and operating 
instructions

These installation and operating instructions 
describe Grundfos ALPHA2.
Sections 1-5 give the information necessary to 
be able to unpack, install and start up the 
product in a safe way.
Sections 6-11 give important information about 
the product, as well as information on service, 
fault finding and disposal of the product.

CONTENTS

Page

1. Limited warranty

Products manufactured by Grundfos Pumps 
Corporation (Grundfos) are warranted to the 
original user only to be free of defects in 
material and workmanship for a period of 30 
months from date of installation, but not more 
than 36 months from date of manufacture.
Grundfos' liability under this warranty shall be 
limited to repairing or replacing at Grundfos’ 
option, without charge, F.O.B. Grundfos’ factory 
or authorized service station, any product of 
Grundfos manufacture. Grundfos will not be 
liable for any costs of removal, installation, 
transportation, or any other charges that may 
arise in connection with a warranty claim.
Products which are sold, but not manufactured 
by Grundfos, are subject to the warranty 
provided by the manufacturer of said products 
and not by Grundfos' warranty.
Grundfos will not be liable for damage or wear to 
products caused by abnormal operating 
conditions, accident, abuse, misuse, 
unauthorized alteration or repair, or if the 
product was not installed in accordance with 
Grundfos' printed installation and operating 
instructions and accepted codes of good 
practice. The warranty does not cover normal 
wear and tear.
To obtain service under this warranty, the 
defective product must be returned to the 
distributor or dealer of Grundfos' products from 
which it was purchased together with proof of 
purchase and installation date, failure date and 
supporting installation data. Unless otherwise 
provided, the distributor or dealer will contact 
Grundfos or an authorized service station for 
instructions. Any defective product to be 
returned to Grundfos or a service station must 

1.

Limited warranty

2

2.

General information

3

2.1

Symbols used in this document

3

3.

Receiving the product

4

3.1

Inspecting the product

4

3.2

Scope of delivery

4

4.

Installing the product

4

4.1

Quick installation tips

5

4.2

Mechanical installation

5

4.3

Changing the power head position

6

4.4

Insulating the pump housing

7

4.5

Electrical connection

8

5.

Starting up the product

10

5.1

Venting the pump

10

5.2

First startup

10

6.

Product introduction

10

6.1

Product description

10

6.2

Applications

10

6.3

Pumped liquids

11

7.

Identification

12

7.1

Nameplate

12

7.2

Type key

12

7.3

Approvals

12

8.

Control functions

13

8.1

Elements on the control panel

13

8.2

Display

13

8.3

Setting the pump

13

8.4

Selection of control mode by 

application

13

8.5

Pump control

14

8.6

Pump performance and operating 

mode selection

15

9.

Fault finding the product

16

10.

Technical data

18

10.1 Operating conditions

18

11.

Disposing of the product

19

Prior to installation, read this 
document. 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 the use of the 
appliance in a safe way and 
understand the hazards involved. 
Children must not use or play with the 
appliance. Cleaning and user 
maintenance shall not be made by 
children without supervision.

Successful operation depends on 
careful attention to the procedures 
described in this manual. Keep this 
manual for future use.

Содержание ALPHA2 15-55F CI 115V

Страница 1: ...GRUNDFOS INSTRUCTIONS ALPHA2 Variable speed circulators with AutoADAPT Installation and operating instructions 3191277 Listed Conforms to ANSI UL Std 778 Certified to CAN CSA Std C22 2 No 108 ...

Страница 2: ...t was purchased together with proof of purchase and installation date failure date and supporting installation data Unless otherwise provided the distributor or dealer will contact Grundfos or an authorized service station for instructions Any defective product to be returned to Grundfos or a service station must 1 Limited warranty 2 2 General information 3 2 1 Symbols used in this document 3 3 Re...

Страница 3: ...al warranty period set forth by the original purchase date 2 General information 2 1 Symbols used in this document The text accompanying the three hazard symbols DANGER WARNING and CAUTION will be structured in the following way Example 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 av...

Страница 4: ...ing instructions one check valve one Check Valve Installed sticker 4 Installing the product WARNING Pressurized system Death or serious personal injury Before dismantling the pump drain the system or close the isolating valve on either side of the pump before the screws are removed The pumped liquid may be scalding hot and under high pressure DANGER Electric shock Death or serious personal injury ...

Страница 5: ...ping No permanent damage will occur In fact Grundfos encourages testing the various hydraulic modes with your hydronic system to ensure maximum energy savings and comfort level 6 With zone panel control applications when there is a call for heat and power has been sent to the pump the pump will remember and restart from the last duty point and hydraulic mode 4 2 Mechanical installation When making...

Страница 6: ...d position CAUTION Hot surface Minor or moderate personal injury Position the pump so that persons cannot accidentally come into contact with hot surfaces 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 WARNING Pressurized system Death or serious personal in...

Страница 7: ...pply a silicon sealant to the internal contours of the shell in order to eliminate any air gaps and prevent condensation between the insulating shell and pump housing Alternatively you can insulate the pump manually in accordance with standard insulating requirements for heating and cooling systems The fitting of insulating shells will increase the pump dimensions Fig 6 Fitting insulating shells t...

Страница 8: ...trician in accordance with the latest edition of the National Electric Code and state local codes and 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 accidentally switched on DANGER Electric shock Death or serious personal injury This pump has not been investigated for use ...

Страница 9: ...e sure to connect the ground cable conductor green of the pump to the ground cable conductor of the power supply Step Action Illustration 3a Strip the ends of the cable conductors as illustrated TM06 8250 4816 3b Align the end of each of the pump s cable conductors including any frayed strands with the end of the corresponding cable conductor from the power supply Green conductor ground Black cond...

Страница 10: ...ation and start up The pump is easy to install Thanks to the AUTOADAPT function factory setting you can start the pump in most cases without making any settings High degree of comfort Minimum noise from valves etc Low energy consumption Low energy consumption compared to conventional circulator pumps 6 2 Applications The ALPHA2 circulator pump is designed for the circulation of water in heating sy...

Страница 11: ...hnical data 6 3 1 Glycol The pump is designed for pumping clean water or up to 50 50 mixtures by weight of glycol and water For glycol usage as well as additional liquid information see section 10 Technical data To prevent the glycol mixture from degrading avoid temperatures exceeding the rated liquid temperature and minimize the operating time at high temperatures It is important to clean and flu...

Страница 12: ...a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment to an ou...

Страница 13: ...ction of the settings see section 9 Fault finding the product 8 3 Setting the pump You can change the pump setting by pressing the push button 8 3 1 Factory default setting The pump s factory default setting is the AUTOADAPT setting 8 3 2 Changing from recommended to alternative pump setting Heating systems are slow systems that cannot be set to the optimum operation within minutes or hours Howeve...

Страница 14: ...ditions You can quickly vent the pump by setting the pump to speed III for a short period In speed II the pump is set on the medium curve under all operating conditions In speed I the pump is set on the minimum curve under all operating conditions Manual summer mode In manual summer mode the pump is stopped to save energy and only the electronics are running To avoid lime deposit that could block ...

Страница 15: ...all operating conditions Constant pressure I The duty point of the pump will move left and right along the lowest constant pressure curve depending on the water demand in the system The head is kept constant irrespective of the water demand Constant pressure II The duty point of the pump will move left and right along the middle constant pressure curve depending on the water demand in the system T...

Страница 16: ...age is too high Check that the power supply falls within the specified range b The rotor is blocked by impurities Remove the impurities ___ ___ a Supply voltage is too low Switch the power off and on Check for air locked rotor and or voltage Correct the power supply 2 Noise in the system Light field is on a There is air in the system Install an air eliminator b The flow is too high Reduce the pump...

Страница 17: ...vent over time Install an air eliminator If necessary rework the piping d The valves are sticking Make sure all valves are in good working order i e remove lime deposits e Wrong direction of flow See the direction of flow arrow marked on the pump Reinstall the pump to correct the direction of flow f The boiler is not working properly Check the water temperature from the boiler and check the boiler...

Страница 18: ...lel pumping applications Curve conditions Test liquid Airless water Curves apply to a density of 983 2 kg m3 and a liquid temperature of 140 F 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 Curves apply to a kinematic viscosity of 0 474 cSt Approximate power usage Liquid temperature M...

Страница 19: ...f the product This product or parts of it must be disposed of in an environmentally sound way 1 Use the public or private waste collection service 2 If this is not possible contact the nearest Grundfos company or service workshop ...

Страница 20: ...20 ...

Страница 21: ...00 www grundfos us GRUNDFOS Canada 2941 Brighton Road Oakville Ontario L6H 6C9 Canada Phone 1 905 829 9533 Telefax 1 905 829 9512 www grundfos ca GRUNDFOS México Boulevard TLC No 15 Parque Industrial Stiva Aeropuerto C P 66600 Apodaca N L México Phone 011 52 81 8144 4000 Fax 011 52 81 8144 4010 www grundfos mx ...

Страница 22: ... com Trademarks displayed in this material including but not limited to Grundfos the Grundfos logo and be think innovate are registered trademarks owned by The Grundfos Group All rights reserved 2020 Grundfos Holding A S all rights reserved ...

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