5608 975 GB 11/2012 Dispose after installation.

Installation instructionsfor contractors

VIESMANN

Connection set for DHW circulation pumpfor Vitodens and Vitoladens

Safety instructions

Please follow these safety instructions closely to prevent accidents andmaterial losses.

Safety instructions explained

NoteDetails identified by the word "Note" con-tain additional information.

Installation, initial start-up, inspection,maintenance and repairs must only becarried out by a competent person (heat-ing engineer/installation contractor).

Before working on the equipment/heat-ing system, isolate the power supply(e.g. by removing a separate mains fuseor by means of a mains isolator) andsafeguard against unauthorised recon-nection.

When using gas as fuel, also close themain gas shut-off valve and safeguardagainst unauthorised reopening.

Repairing components which fulfil asafety function can compromise the safeoperation of your heating system. For replacements, use only originalspare parts supplied or approved byViessmann.

Application information

■ Vitodens 222-F■ Vitodens 333-F■ Vitoladens 333-F

2

1.

2.

3.

A

NoteInstall the shorter of the two twin nipplesA here.

Fitting the connection set

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2.

1.

Fitting the connection set (cont.)

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4.

3.

1.

2.

Fitting the connection set (cont.)

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2.

1.

?3.

A

NoteInstall the longer of the two twin nipplesA here.

Fitting the connection set (cont.)

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Vitodens 222-F, type FR2B

Connect the DHW circulation pump tointernal extension H1 or H2 or to exten-sion AM1 or EA1.

Extension installation instruc-tions

Vitodens 222-F, type FS2B, Vitodens333-F, type FS3B and Vitoladens 333-F, type VP3U

Connect the DHW circulation pump toextension AM1 or EA1.

Extension installation instruc-tions

Vitodens 333-F, type B3TA

Connect the DHW circulation pump toplug sK inside the boiler control unit.

Boiler installation instructions

Making the electrical connections of the DHW circulation pump

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Fitting extension AM1 or EA1

3.

4.

2.

1.

Secure extension AM1 or EA1 to theretainer supplied.

Making the electrical connections of the DHW… (cont.)

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In order for the circulation pump to oper-ate, the lever on the circulation pumpmust be aligned with the direction offlow.

Commissioning

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Adjusting the circulation volume

L1

L 2

A

According to EN 806, the line volume ofthe DHW circulation pipe should be cir-culated three times per hour to preventexcessive cooling.Set the flow rate at flow regulating valveA.Calculating the required circulation vol-ume Vp (volume of the total DHW circu-lation and supply line):

Line volume of copper pipe:Nominal diam-eterDN

Line volume VLl/m

12 0.1315 0.2020 0.31

Example:■ Supply line DN 20, line length L1

= 20 m■ DHW circulation pipe DN 12, line

length L2 = 20 m■ Circulation volume Vp = 3 x V/h

V = L1 · VL + L2 · VLV = 20 m · 0.31 l/m + 20 m · 0.13 l/mV = 6.2 l + 2.6 lV = 8.8 lVp = 3 · V/hVp = 3 · 8.8 l/hVp = 26.4 l/h = 0.44 l/min

Value to be set at the flow regulatingvalve: 0.44 l/min.

Commissioning (cont.)

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Adjusting the flow regulating valve

B A

DD

FB A

0.30.51.0

1.5

l/min

!0.30.51.0

1.5

Commissioning (cont.)

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56

08 9

75 G

B

12

Viessmann LimitedHortonwood 30, TelfordShropshire, TF1 7YP, GBTelephone: +44 1952 675000Fax: +44 1952 675040E-mail: info-uk@viessmann.com

Viessmann Werke GmbH&Co KGD-35107 AllendorfTelephone: +49 6452 70-0Fax: +49 6452 70-2780www.viessmann.com

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