Honeywell V5012C PRODUCT DATA

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Kombi-DP Diaphragm Unit

RETROFIT AUTOMATIC DP CONTROLLER

Design

The diaphragm unit consists of:

• Diaphragm housing with connections for impulse tube and valve

• Spindle and tappet

• Supply valve adapter to install impulse tube to supply

mains valve (suitable for V5000 Kombi-3-plus RED and V5100 Stop Valve-3)

• 4 x 1 mm impulse tube with compression fittings, length 800 mm

• 4 mm Allan key to change the pre-setting

Materials

• Diaphragm housing, spindle and diaphragm spring made of stainless steel

• Connection for impulse tube and valve, supply valve adapter, compression fittings and tappet made of brass

• Diaphragm and soft seals made of EPDM

• Impulse tube made of copper

V5012C

PRODUCT DATA

Application

The V5012C Kombi-DP diaphragm unit is installed onto a V5010 Kombi-3-plus BLUE or V5032 Kombi-2-plus return mains balancing valve and connected to a V5000 Kombi-3plus RED or V5100 Stop Valve-3 supply mains valve with the supplied impulse tube.

It is used in systems with variable volume flows, for example two-pipe heating systems or district heating exchangers, and supports a hydronic balance by keeping the differential pressure over consumers at a constant pre-set level even under changing flow conditions.

The V5012C Kombi-DP diaphragm unit can be fitted to the Kombi-Valves at any time, even when the system is under pressure and in operation – operation of the system does not have to be interrupted to install the V5012C Kombi-DP.

Features

• Retrofittable without interrupting operation of the

system

• Rugged design

• Two pre-setting ranges available: 0.1...0.3 bar or

0.3...0.6 bar differential pressure

• Suitable for V5010 Kombi-3-plus BLUE DN10...DN40

and V5032 Kombi-2-plus DN15...DN40

Specifications

Medium Water or glycol-water mixture,

quality to VDI 2035

pH-value 8...9.5

Operating temperature 2...130°C (36...266°F)

Operating pressure max. 10 bar (145 psi)

Differential pressure max. 2.0 bar (29 psi)

Differential pressure pre-setting range

Factory setting V5012C0103: 0.1 bar (1.45 psi)

vs (cv)-values see flow diagram and remarks

V5012C0103:

0.1…0.3 bar (1.45…4.35 psi)

V5012C0306:

0.3…0.6 bar (4.35...8.70 psi)

V5012C0306: 0.3 bar (4.35 psi)

on page 5

V5012C KOMBI-DP

Function

The V5012C Kombi-DP diaphragm unit is installed onto a V5010 Kombi-3-plus or V5032 Kombi-2-plus return mains balancing valve and connected to a supply mains valve with the supplied 4 x 1mm copper impulse tube and compression fittings. Suitable supply valves are the V5000 Kombi-3-plus RED or the V5100 Stop Valve-3 which are both compatible with the supply valve adapter of the V5012C Kombi-DP kit.

The pressure of the supply pipeline is led to the Kombi-DP via the impulse tube and acts onto the top of the diaphragm, the pressure of the return pipeline is led to the Kombi-DP through the return valve and acts onto the bottom of the diaphragm.

Dimensions

When the supply pressure increases, the diaphragm inside the Kombi-DP is pushed down against the return pressure. The diaphragm acts onto the insert of the connected return valve and the flow is throttled.

When the supply pressure decreases, the diaphragm inside the Kombi-DP is pushed open by the return pressure. The diaphragm moves up, releasing the insert of the return valve and the flow increases.

The desired differential pressure can be preset from 0.1...0.3 or from 0.3...0.6 bar, depending on the type used.

Additional space required for optional VA2503B001

Installation space required

Additional space required for optional VA2503B001

Installation space required

Fig. 1. V5012C Kombi-DP diaphragm unit with V5010 Kombi-3-plus BLUE or V5032 Kombi-2-plus

Table 1. Dimensions

Valve size V5012C0103 V5012C0306

DN h7 l5 h7 l5

135 95 145 102

135 95 146 103

150 100 161 111

150 90 161 101

185 105 196 116

185 100 196 111

NOTE: The V5012C is not supplied with valve. All dimensions in mm.

V5012C KOMBI-DP

Ordering Information

Table 2. OS-Nos. (OS=Ordering System)

Order text Pre-setting range OS-No.

V5012C Kombi-DP diaphragm unit 0.1…0.3 bar (1.45…4.35 psi) V5012C0103

0.3…0.6 bar (4.35...8.70 psi) V5012C0306

Box contents

• Diaphragm unit

• Supply valve adapter

• 4 mm Allan key

• Copper impulse tube 4 x 1 mm, length 800 mm

• Suitable compression fittings

• Installation and operating instructions

Accessories

Spring to reduce differential pressure pre-setting by 0,05 bar (0,73 psi)

for V5012C0103 only VA2502A002

External pre-setting device for installation between Kombi-Diaphragm Unit and impulse tube

Angle adapter

for V5012C0103 only (not with VA2504A001)

for all V5012 Kombi-DP VA2504A001

VA2503B001

Shutoff fitting R 1/4”

for all V5012 Kombi-DP VS5501A008

Service Parts

Spindle assembly

for all V5012C Kombi-DP

Compression fitting for 4 x 1 mm copper impulse tube

for all V5012 Kombi-DP VS5500A004

VS2500KDP1

Compression fitting for 6 x 1 mm copper impulse tube

for all V5012 Kombi-DP VS5500A008

Application Examples

Fig. 2. V5012C Kombi-DP in a two-pipe heating system

Fig. 3. V5012C Kombi-DP in a cooling system

V5012C KOMBI-DP

Control Characteristics

NOTE: Below control characteristics refer to the combination of a V5012C Kombi-DP with a V5010 Kombi-3-plus BLUE or

V5032 Kombi-2-plus balancing valve.

Fig. 4. Control characteristic of V5012C0103, set at 0.1 bar Dp (factory setting)

V5012C KOMBI-DP

Table 3. k

kvs-value

cv-value

Liter/h Qmin

Qnom

Qmax

10 15 20 25 32 40

1.50 1.50 3.50 3.50 5.50 5.50

1.76 1.76 4.10 4.10 6.44 6.44

20 20 40 40 80 80

500 500 1,000 1,000 2,000 2,000

750 750 1,500 1,500 2,500 2,500

NOTE: The pump pressure must be set at least 0.1 bar above the pre-setting value, e.g. Dp 0.3 Î P

bar. The total pressure drop across supply and return valve, taking the V5012C Kombi-DP pre-setting into account, can be calculated with Honeywell’s Valve Sizing Software at www.honeywell-valvesizing.com.

The V5012C0103 is factory set to 0.1 bar. The pre-setting can be increased to max. 0.3 bar. In that case the control

curve as displayed in Fig. 4 moves in parallel to the pre-setting value.

The V5012C0306 is factory set to 0.3 bar. The pre-setting can be increased to max. 0.6 bar. The control curve as

displayed in Fig. 4 moves in parallel to the pre-setting value.

In some special cases, e.g. heating systems with unrestrichted TRVs, the flow can additionally be throttled by reducing

the pre-setting value of the balancing valve.

Table 4. Effect of different valve pre-settings on k

Pre-setting of Balancing Valve

DN 1.5 1.4 1.2 1.0 0.8 0.6 0.4

1.50 1.45 1.35 1.25 1.15 0.95 0.70

3.50 3.40 3.30 3.10 2.80 2.45 1.80

— — — 5.50 5.20 4.45 —

NOTE: The V5010 Kombi-3-plus BLUE or V5032 Kombi-2-plus balancing valve has to be pre-set to 1.5 (sizes DN10...DN25)

or to 1.0 (sizes DN32...DN40) when used with the V5012C Kombi-DP diaphragm unit. Lower pre-settings can be used to further throttle down the flow, see Table 4 on page 5.

vs-values and flow rates

0 0,4 bar; Dp 0,6 Î P0 0,7

vs-value

V5012C KOMBI-DP

Installation and Setup

Changing the pre-setting

2 3 4

Note: Factory setting is 0.1 bar for V5012C0103 and 0.3 bar for V5012C0306.

Installation

Return valve:

V5010 Kombi-3-plus BLUE

or V5032 Kombi-2-plus

2 3 4

See 3

7 8

Spindle stays loose after first

removal

Supply valve:

V5000 Kombi-3-plus RED

or V5100 Stop Valve-3

9 10 11 12

Supplied with unit

Vent over diaphragm

connection

For more information on Honeywell Balancing and Pipeline Valves see www.honeywell-valvesizing.com

ACS Control Products

Honeywell GmbH

Möhnestraße 55

59755 Arnsberg, Germany

Phone: +49 (2932) 9880

Fax: +49 (2932) 988324

www.honeywell.com

EN0H-0281GE25 R0805 August 2005 © 2005 Honeywell International Inc. Subject to change • All rights reserved Manufactured for and on behalf of the Environmental and Combustion Controls Division of Honeywell Technologies Sàrl, Ecublens, Roude du Bois 37, Switzerland or by its Authorized Representative.

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Honeywell V5012C PRODUCT DATA

Specifications and Main Features

Frequently Asked Questions

User Manual