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www.herz.eu

HerzCONDirect connection for fan coils

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HerzCON – innovative direct connection for fan coils

Efficiency, controllability, easy assembly and safety are requirements that are perfectly fulfilled by the HerzCON direct connection from HERZ Armaturen. A special focus was put on the dual use for heating and cooling.

Inner values. The sizes DN15 to DN25 are equipped with a cooling-suitable water vapour-impermeable insulation box. This insulation box features state-of-the-art technology in familiar HERZ quality: the core component is the proven HERZ 4006 SMART PICV. This guarantees a simple, pressure-independent adjustment of the desired volume flow. It can be equipped with various types of actuators, allowing any control to be used - from room thermostat up to building management system.

The all-rounder. A complete system unit with multifunction ball valves, drain valve and strainer has been developed around the HERZ 4006 SMART PICV. All necessary functionalities according to technical standards can be realized with HerzCON: Control and regulation, filling, flushing and draining as well as isolation and filtering are combined in one unit. Six flow ranges give a wide range of applications. All components are made of dezincification-resistant brass which enables operation with heating water according to ÖNORM H 5195-1 as well as antifreeze mixtures based on ethylene glycol or propylene glycol.

Advantages

Enables processes such as regulation, flushing and isolation

Suitable for heating and cooling systems

Large bypass for flushing according to BSRIA BG29/2011

Complete assembly and testing in the factory

Dimensions DN 15 and DN 20 with 65 mm, DN 25 with 90 mm and DN 32 with 100 mm pipe centres

Reduced amount of work, time and costs on site

All components made of dezincification-resistant brass High planning security and installation safety

Project: Office Unirii View (Bucharest)

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Field of application

HerzCON was designed for easy connection to fan coil units or other terminal devices and uses the HERZ 4006 SMART PICV with multifunctional HERZ ball valves and a HERZ strainer with HERZ drain valve 2512. Optionally, 2-point, 3-point or modulating 0 - 10 V. DC actuators or motorized drives installed and integrated into a GLT if required. The insulation box (DN 15 - DN 25) is designed water vapour permeable. In addition to fast assembly this means that there are no product differences regarding heating and cooling systems - HerzCON is suitable for both applications.

Material and construction

Package: dezincification-resistant brass

Diaphragm and O-rings: EPDM

Water quality according to ÖNORM H 5195-1 and VDI 2035. When using ethylene glycol as anti-freeze agent, a content of 20-50% and with propylene glycol a content of 25-50% is permissible.

In accordance with article 33 of the REACH Regulation (EC No. 1907/2006) we are obliged to point out that the substance lead is listed on the SVHC list and that all components made of brass that are processed in our products exceed 0.1% (w / w) lead (CAS: 7439-92-1 / EINECS: 231-100-4). Since lead is firmly bound as an alloy constituent, no exposures are to be expected and therefore no additional information on safe use is necessary.

Operating data

Max. operating pressure: 25 bar

Min. operating temperature: - 20 °C

Max. operating temperature: 130 °C

Stroke: 4 mm

The integrated control unit, together with the actuator, is responsible for the modular control. Various actuators can be used.

Article overview

Order number Dimension Flow rate area (l/h)

Standard operation kvs [m³/h]

Bypass operation kvs [m³/h]

1 4600 51 DN 15 80 - 400 0,55 4,8

1 4600 50 DN 15LF 20 - 120 0,20 4,8

1 4600 59 DN 15MF 40 - 190 0,34 4,8

1 4600 52 DN 20 200 - 820 1,26 5,4

1 4600 57 DN 20 HF 350 - 1750 3,2 5,4

1 4600 58 DN 25 100 - 1900 2,75 10

1 4600 53 *) DN 25 100 - 1900 2,75 10

1 4600 54 *) DN 32 200 - 2500 4,57 14,2

*) Design without isolation box

Drives, screw connections and compression adapters must be ordered separately.

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The integrated drain valve in the strainer allows for flushing the system without removing the strainer basket.

Pressure-independent control valve One valve for three requirements: DPCV, balancing, regulation. No calculation and verification of valve authority required.

HERZ multifunctional ball valves with red and blue handle, ball with T-bore. Full bore ball valve allows the drainage or filling of complete systems or a subsystem in case of maintenance. The position of the ball valves is indicated by the ball valve handles.

Isolation box (fire resistance)

Method ClassDIN EN ISO 11925-2 1 EDIN 4102-1 EUL 94 HBF

1 edge exposure, classification according to EN 13501-1

Actuator (Thermo-electric or motorised)

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Installation example

Application example

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HerzCON – direct connection for fan coils

DN 15 | DN 15LF | DN 15 MF

Dimensions in mm

DN 20

Dimensions in mm

Insulation box for DN 15 - 20

Dimensions in mm

(DN 20 HF: 174,2)

(DN 20 HF: 188,2)

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HerzCON – direct connection for fan coils

DN 25

Dimensions in mm

DN 32

Dimensions in mm

Insulation box for DN 25

Dimensions in mm

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Default example

To select the correct setting and the required minimum differential pressure for the desired flow, follow the steps shown in the figure. The % setting for a given flow on the left side of the graph can be read off the solid line. The minimum DP value for this setting can be read off the dashed line on the right side of the diagram.

Diagram PICV 4600

Flow rate: continuous lineMinimum DP value: dashed lineAccuracy < ± 5 %

DN 15 DN 15LF

DN 15MF

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Norm

blattsamm

lung HERZ Arm

aturen 2011

HE

RZ

-Norm

diag

ramm

HE

RZ

- 4006 SM

AR

T

Art. N

r.: 1 4006 21, 1 4006 61D

N 15

0

10

20

30

40

50

60

0

100

200

300

400

500

600

0 10 20 30 40 50 60 70 80 90 100

Diff

eren

zdru

ck [k

Pa]

Dur

chflu

ss [l

/h]

Einstellung [%]

Durchfluss

Differenzdruck

0,03 0,22 0,38 0,48 0,57

kv-Werte

Flo

w r

ate

[l/h]

Setting [%]

Diff

eren

tial p

ress

ure

[kP

a]

Differential pressure

Flow rate

Flo

w r

ate

[l/h]

Flo

w r

ate

[l/h]

Flo

w r

ate

[l/h]

Setting [%] Setting [%]

Setting [%]

Diff

eren

tial p

ress

ure

[kP

a]

Diff

eren

tial p

ress

ure

[kP

a]

Diff

eren

tial p

ress

ure

[kP

a]

Differential pressure

Differential pressure

Differential pressure

Flow rate

Flow rate

Flow rate

Flow coefficient Flow coefficient

Flow coefficient

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Diagram PICV 4600

DN 20

DN 25

DN 32

Seite 9

HERZ-Kom

biventil 4006

HER

Z-Norm

diagramm

Art. Nr. 1 4001 24, 1 4006 14

DN

32

0

5

10

15

20

25

0

500

1000

1500

2000

2500

0 10 20 30 40 50 60 70 80 90 100

Diff

eren

zdru

ck [k

Pa]

kv-Wert

Dur

chflu

ss [l

/h]

Einstellung [%]

1 4001 24, 1 4006 14

0,49 1,79 2,94 4,54 5,59

Durchfluss

Differenzdruck

Seite 8

HERZ-Kom

biventil 4006

HER

Z-Norm

diagramm

Art. Nr. 1 4001 23, 1 4006 13

DN

25

0

10

20

30

40

0

500

1000

1500

2000

0 10 20 30 40 50 60 70 80 90 100

Diff

eren

zdru

ck [k

Pa]

kv-Wert

Dur

chflu

ss [l

/h]

Einstellung [%]

1 4001 23, 1 4006 13

0,32 1,23 2 2,9 3,26

Durchfluss

Differenzdruck

Flo

w r

ate

[l/h]

Flo

w r

ate

[l/h]

Diff

eren

tial p

ress

ure

[kP

a]D

iffer

entia

l pre

ssur

e [k

Pa]

Setting [%]

Setting [%]

Flow coefficient

Flow coefficient

Differential pressure

Differential pressure

Flow rate

Flow rate

DN 20HF

15

20

25

30

35

40

0

200

400

600

800

1000

1200

1400

1600

1800

0 10 20 30 40 50 60 70 80 90 100

DP

[kPa

]

FLO

W [l

/h]

PRESETTING [%]

1 4006 72, 1 4006 82

FLOW

DP

0 ,01 1,03 1,91 2,74 3,2 kv-VALUE

Flo

w r

ate

[l/h]

Flo

w r

ate

[l/h]

Setting [%] Setting [%]

Diff

eren

tial p

ress

ure

[kP

a]

Diff

eren

tial p

ress

ure

[kP

a]

Differential pressure

Differential pressure

Flow rate

Flow rate

Flow coefficient Flow coefficient

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Installation

HerzCON in the sizes DN 15 - DN 25 also include a water vapour permeable insulation box. Installation instructions step by step:

Potential air gaps must be insulated against vapour diffusion.

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Operation

Standard operationDuring normal operation the bypass is closed, the drain valve on the strainer is closed, the ball valves are in the position shown on the picture. The PICV 4006 SMART is preset for flow.

Bypass operationFor normal flushing the bypass is open and the combi valve is closed. The draining valve on the strainer is also closed, the ball valves are in the position shown on the picture.

FlushingFor flushing the bypass is closed, the ball valve in the supply line and the drain valve on the strainer are open. The ball valves are in the position shown on the picture. The system is drained by the strainer.

BackflushingFor backflushing the bypass is closed, the drain valve on the strainer and the combi valve are open. The ball valves are in the position shown on the picture. The system is flushed by ball valve, 4006 SMART, fan coil and strainer.

All information, diagrams and drawings contained in this document are in accordance with the information available at the time of printing and are for information purposes only. Changes in the sense of technical progress are reserved. All schemes have symbolic character and make no claim to completeness. The illustrations are symbolic representations and therefore may differ optically from the actual products. Possible colour deviations are due to printing technology. Country-specific product deviations are possible. Subject to change of technical specifications and function. If you have any questions, please contact the nearest HERZ office.

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HERZ Armaturen GmbHRichard-Strauss-Strasse 22, 1230 ViennaTelephon: +43 (0)1 616 26 31-0, Fax: +43 (0)1 616 26 31-27E-mail: office@herz.eu

www.herz.eu

W18

0401

Her

zCon

EN

012

020

HERZ Armaturen GesmbH - Wien herz.armaturen