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English (GB)

4

3.3.3 Connecting the piping system

1. Turn the union nuts by hand to loosen the inlet and outlet 

ports. See fig. 

3

.

2. Seal the pipe fittings with thread sealing tape.
3. Carefully screw the inlet and outlet connections to the pipe 

fittings using a pipe wrench or similar tool. Keep the union nut 
on the pipe fitting if you have removed it from the pump.
The pump is equipped with flexible connections, ± 5 °, to 
facilitate the connection of inlet and outlet pipes. 

4. Fasten the connections to the inlet and outlet. Hold the 

connection with one hand and tighten the union nut with the 
other hand. 

Fig. 3

How to fit the connections

3.3.4 How to reduce noise in the installation

Vibrations from the pump may be transferred to the surrounding 
structure and create noise in the 20-1000 Hz spectrum, also 
called the bass spectrum.
Correct installation using a vibration-damping rubber pad, flexible 
hoses and correctly placed pipe hangers for rigid pipes can 
reduce the noise experienced by up to 50 %. See fig. 

4

.

Place pipe hangers for the rigid pipes close to the connection of 
the flexible hose.

Fig. 4

How to reduce noise in the installation

3.3.5 Installation examples

Fittings, hoses and valves are not supplied with the pump.
We recommend to follow the installation examples in sections 

3.3.6

 to 

3.3.8

.

3.3.6 Mains water pressure boosting

Fig. 5

Mains water pressure boosting

Make sure that the pump is not stressed by the 
piping system.

Always loosen and tighten the union nuts on the inlet 
and outlet ports by hand. Damage to the inlet and 
outlet parts increases the risk of leakage.

TM

06 43

18 191

5

Pos. Description

1

Inlet and outlet port

2

Union nut

3

Pipe fitting

We recommend to use flexible hoses and mount the 
pump on a vibration-damping rubber pad.

1

2
3

TM

06

 43

21

 19

15

T

M

06

 4

3

4

7

 20

15

Pos. Description

1

Highest tapping point

2

Pipe hangers and supports

3

Isolating valves

4

Flexible hoses

5

Bypass valve

6

Optional pressure-reducing valve on the inlet side if the 
inlet pressure can exceed 10 bar (145 psi)

7

Optional pressure-relief valve on the outlet side if the 
installation cannot withstand a pressure of 6 bar (87 psi)

8

Drip tray. Install the pump on a small stand to prevent 
the ventilation holes from being flooded.

9

Pressure gauge

10

Mains water pipe

Rubber pad

Pipe hanger for rigid pipe

Flexible hose

4

9

1

3

7

2

5

10

6

2

3

8

Summary of Contents for SCALA Series

Page 1: ...SCALA Installation and operating instructions GRUNDFOS INSTRUCTIONS http waterheatertimer org Water heater recirculation system html...

Page 2: ...9 8 Setting the product 10 8 1 Setting the outlet pressure 10 8 2 Locking and unlocking the operating panel 10 8 3 Expert settings SCALA2 10 8 4 Resetting to factory settings 11 9 Servicing the produ...

Page 3: ...1 25 bar 18 psi In case of suction lift of more than six metres the pipe resistance on the outlet side must be at least two metres water column or 3 psi at any given flow in order to obtain optimum op...

Page 4: ...f the flexible hose Fig 4 How to reduce noise in the installation 3 3 5 Installation examples Fittings hoses and valves are not supplied with the pump We recommend to follow the installation examples...

Page 5: ...ction lift is 8 m 26 ft H2 Inlet pipe must be submersed at least 0 5 m 1 64 ft TM06 4348 4117 Pos Description 1 Highest tapping point 2 Pipe hangers 3 Isolating valve 4 Flexible hoses 5 Drain to sewer...

Page 6: ...ertain that the pump is connected only to a properly grounded grounding type receptacle protective earthing If national legislation requires a Residual Current Device RCD a Ground Fault Circuit Interr...

Page 7: ...ent of an internal leakage occurs the liquid will be drained through the bottom of the pump Install the pump in such a way that no undesirable collateral damage can arise 5 Handling and storing the pr...

Page 8: ...temperature 13 Minimum and maximum rated power 14 Model 15 Voltage and frequency 16 Approvals 17 Minimum and maximum rated current DK 8850 Bjerringbro Denmark SCALA2 3 45 AKCHDE Model A 200 240V 50 60...

Page 9: ...e cause has disappeared or been remedied See section 8 3 3 Auto reset For further information about system status see section 12 Fault finding the product TM06 3301 5114 SCALA2 Function On off Increas...

Page 10: ...tpoint The pump will lower the setpoint to either 4 5 3 5 or 2 5 bar 65 51 or 36 psi The self learned setpoint is indicated on the operating panel by one flashing green light After every 24 hours the...

Page 11: ...bottom and can easily be removed and cleaned with a stiff brush See fig 19 Clean the insect filter once a year or as needed Fig 19 Insect filter 9 1 2 Inlet and outlet valves The pump is maintenance f...

Page 12: ...uct 4 The pump will remember the controller settings even if it is turned off 10 1 Deblocking the pump The end cover incorporates a plug which can be removed by means of a suitable tool This makes it...

Page 13: ...reset function in the service menu Grundfos Eye Indication Description No lights are on The power is off The pump is not running Two opposite green indicator lights running in the direction of rotatio...

Page 14: ...completely or partly open position Clean repair or replace the non return valve See section 9 Servicing the product 2 The pump is running a Leakage from the pipe system or the non return valve is not...

Page 15: ...ump but it runs only for a few seconds Yes a Dry running or water shortage Check the water source and prime the pump Yes b The inlet pipe is blocked by impurities Clean the inlet pipe Yes c The foot o...

Page 16: ...ontact the nearest Grundfos company or service workshop See also end of life information on www grundfos com product recycling Temperature C F Maximum ambient temperature 1 x 208 230 V 60 Hz 45 113 1...

Page 17: ...8 5005 Korea GRUNDFOS Pumps Korea Ltd 6th Floor Aju Building 679 5 Yeoksam dong Kangnam ku 135 916 Seoul Korea Phone 82 2 5317 600 Telefax 82 2 5633 725 Latvia SIA GRUNDFOS Pumps Latvia Deglava biznes...

Page 18: ...8564 The name Grundfos the Grundfos logo and be think innovate are registered trademarks owned by Grundfos Holding A S or Grundfos A S Denmark All rights reserved worldwide Copyright Grundfos Holding...

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