resideo VBG26, MR6 Braukmann User Guide

: June 7, 2024
: resideo

resideo VBG26, MR6 Braukmann

APPLICATION

VBG26 ball valves are designed as change-over valve to connect one 2-pipe heat exchanger (Fan-coil Unit or Ceiling) to the 4-pipe system, ideally together with the Kombi-FCU Pressure Independent Control Valve used for dynamic balancing.
The simultaneous rotation of two balls, mechanically connected to the one stem, opens supply and return ways on one side (e.g. cooling) and closes at the same time the other side (heating). That avoids any mixing between flows and reduce potential energy losses.
VBG26 valves are delivered with flow limiter kit in the valve box. That gives flexibility in flow rate adjustment by picking adequate limiter disk with Kv value displayed on. Each Kv value should be written during installation on the label stripped on the valve neck.
VBG26 valves are designed to be actuated by MR6 rotary valve actuators in two types. On/off actuator gives the basic change-over functionality, modulating enables setting mid position to close the valve. Position feedback on modulating actuator shell be used for remote system monitoring and system check.

SPECIAL FEATURES

Change-over Valve with scalable flow limitations covering all flow needs with only 3 valve versions
In combination with modulating actuator option to close the valve in mid-position
Externally threaded valve versions for easier installation
Optional use of on/off or modulating actuator
Modulating actuator with position feedback
Pre-wired actuator with clear position indication and manual operation
Can be combined with the Kombi-FCU for high accurate flow control; Ideal connection for 4-pipe systems including hydronic dynamic balancing

INSTALLATION EXAMPLE

VALVES VBG26

Technical Data

Controlled medium:| Chilled or hot water according to VDI2035 with up to 50 % Glycol (oxygen concentration less than 0.2 g/m3, pH 8. 9.5; Fe<0.5 mg/kg; Cu<0.1 mg/ kg).
---|---
Pressure values
Nominal pressure rating:| PN16
Max. differential pressure:| 2bar
Operating temperatures
Media temperature:| +2°…+110°
Ambient temperature:| 0°…+55°
Specifications
Valve type:| 6-way ball valve, change over
Leakage rate:| Class A as per EN12266-1/ 12 – P12
Total operation angle:| 90°
First side operation angle :| 0…32°
“Dead zone” operation angle:| 32°…58°
Second side operation angle:| 58°…90°
Flow characteristic:| linear
Connection/Sizes
Connection type:| External BSPP, flat sealing

CONSTRUCTION

Overview

| Components| Materials

1

TECHNICAL CHARACTERISTICS

kvs-Values

DN size

| Kv max:| Kv flow limitation:|

Ordering Number

---|---|---|---

15

| 1.25| 0.25 / 0.40 / 0.63 /1|

VBG26-15

20

| 2.8| 0.7 / 1.0 / 1.6 / 2.1| VBG26-20
20| 4.0| 2.5|

VBG26-20F

Flow limiters by kv disks

VBG26 valves are supplied with the maximum flow rate defined by Kv max value.
As there is typically heating flow much lower comparing to cooling one the valve should be adjusted on the flow rate. VBG26 valves are delivered with flow limiter kit in the valve box. That gives flexibility in flow rate adjustment by picking adequate kv disk with Kv value displayed on. Each Kv value should be written during installation on the label stripped on the valve neck.

Port connections

VBG26 valves are designed with integrated pressure relief functional device.
That integrated device prevents systems from potential damages caused by pressure changes when the valve is close (45°) and ambient temperate could heat-up or cooldown close circuit.
The integrated pressure relief device balance potential overpressure in the coils side with the main system pressure when VBG26 valve closes the coil circuit (up to rotations 50°).

Pressure drop characteristics

DIMENSIONS

Valves

Parameter| |

Values

---|---|---
Nominal size diameter: Connection Dimensions:|

DN

|

15

|

20

D

|

G 3/4″

|

G 3/4″

B

|

41.5

|

47

C

|

33.8

|

39

E

|

35

|

41

G

|

G 3/4″

|

G 3/4″

H

|

117

|

141

I

|

50

|

60

P

|

55.9

|

62

L

|

75.3

|

86

ORDERING INFORMATION

Options

Description:	DN:	O.S. no. :
6-way valve; external threads, kv max 1.25; flow limiters 0.25/0.40/0.63/1.00
DN15	VBG26-15
6-way valve, external threads, kv max 2.8; flow limiters 0.7/1.0/1.6/2.1
DN20	VBG26-20
6-way valve, high flow; externals thread, kv max 4.00; flow limiter 2.5	DN20

VBG26-20HF

Accessories

| Description| Part No.
---|---|---
| Fastening Base for VBG26
| VBG26-063ZA
| Insulation shell
Insulation shell for DN15 type| VBG26-063GI-15
Insulation shell for DN20 types| VBG26-063GI-20
| Pliers for KV Disks
| VBG26-091SOS

Suggested PICV for dynamic balancing

| V5006TY; DN15, DN20|
---|---|---
| V5006TYxxx
**| Piping to connect VBG26 to V5005TY DN15**|
| ACS-15T

INSTALLATION GUIDELINES

Mounting

For more-detailed information on mounting, see the Mounting Instructions supplied with each valve.
Please strictly follow flow direction and port connection guidance. Cooling side must be connected to ports “1” and “4”!
The water quality must meet VDI 2035 requirements with max 50% of Glycol.

TRANSPORTATION AND STORAGE

Keep parts in their original packaging and unpack them shortly before use.
The following parameters apply during transportation and storage:

Parameter	Value
Environment:	clean, dry and dust free
Min. ambient temperature:	– 20 °C
Max. ambient temperature:	70 °C
Min. ambient relative humidity:	0 % *
Max. ambient relative humidity:	55 % *

*non condensing

ACTUATOR MR6

Technical Data

Operating temperatures

ORDERING INFORMATION

Options

O.S. no.

| Power supply| Control signal| Power consumption|

Cable

---|---|---|---|---

Driving

| Holding
W| VA|

W

MR6-24-2POS

3 x 0.5 mm2 1m length

MR6-24-010

| 24 VAC ±15 %; 50 Hz| modulating 0 – 10 VDC, 4 – 20 mA Input impedance: 26kΩ
(position signal Y)| 2.5| 2.5| 0.3|

4 x 0.5 mm2 1m length

DIMENSIONS

MR6 with VBG26-15

MR6 with VBG26-20/20HF

INSTALLATION GUIDELINES

Mounting

For more-detailed information on mounting, see the Mounting Instructions supplied with each valve.

Recommendation: Turn the valve actuator at least once a week to avoid sticking the valve in one position

VBG26-15 with Kombi-FCU DN15 (connected via ACS-15T)

Option 1

Option 2

Electrical Installation

Manufactured for and on behalf of Pittway Sàrl, Z.A., La Pièce 4,
1180 Rolle, Switzerland

For more information
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Ademco 1 GmbH, Hardhofweg 40,
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Phone: +49 6261 810
Fax: +49 6261 81309