ESBE VTR300 Thermostatic Control Units Circulation Set User Guide
- June 5, 2024
- ESBE
Table of Contents
ESBE VTR300 Thermostatic Control Units Circulation Set User Guide
Introduction
The ESBE circulation set series VTR300 and VTR500 offers an easy installation of HWC (hot water circulation). With non-return valves and all needed connections included, the installer can rest assured that the installation is made not only faster but also with guaranteed performance. The VTR300 and VTR500 comes with a custom tailored insulation shell to prevent any unnecessary heat losses, especially important in HWC systems.
OPERATION
The Circulation Set offers instantly available hot water, scald protection and comfort in a compact and efficient way. Using only thermostatic components (non-electrical) the unit is completely independent and provides very easy installation, with connections and check valves included.
If a hot water circulation system is not properly insulated, energy may be lost as heat radiation occurs continuously from uninsulated pipes and fittings. VTR300/VTR500 comes with an insulation that is easy to assemble and which can be opened and re-assembled without loss of function.
Insulation is also a safety feature to prevent burn injuries.
FUNCTION
To get access to hot-water at a tap without waiting, an HWCpipe with circulation pump should be installed and each tap connected to the HWC-pipe. The recirculation can be built up in several different ways where the challenge is to ensure that the correct temperature is available at the tap without losing energy. If the system is installed incorrectly the stratification in the accumulation tank can be lost.
To simplify for the installer to make the installation correctly the ESBE VTR300/VTR500 has all components needed included. Just connect the Circulation Set to the tank and the HWC-circuit.
MEDIA
This product is designed to be used in Fresh water / Potable water systems.
VALVES ARE DESIGNED FOR
SERIES VTR320, EXTERNAL THREAD
SERIES VTR520, EXTERNAL THREAD
* Kvs-value in m3/h at a pressure drop of 1 bar.
TECHNICAL DATA
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Pressure class: PN 10
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Working pressure: 1,0 MPa (10 bar)
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Differential pressure: Mixing, max. 0,3 MPa (3 bar)
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Media temperature: max. 95°C
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Temperature stability − VTR300: ± 2°C*
VTR500: ± 4°C** -
Connection: External thread (R), EN 10226-1
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Valid at unchanged hot/cold water pressure, minimum flow rate 4 l/min. Minimum temperature difference between hot water inlet and mixed water outlet 10°C.
** Valid at unchanged hot/cold water pressure, minimum flow rate 9 l/ min. Minimum temperature difference between hot water inlet and mixed water outlet 10°C.
Material
Valve housing and other metal parts with fluid contact: Dezincification
resistant brass, DZR
PED 2014/68/EU, article 4.3
Pressure Equipment in conformity with PED 2014/68/EU, article 4.3 (sound
engineering practice). According to the directive the equipment shall not
carry any CE-mark.
4MS/UBA
4MS/KTW-BWGL
INSTALLATION EXAMPLES
The shown applications are only examples of product use!
Before using the product in any application, the regional and national
regulations need to be checked.
DIMENSIONING OF DOMESTIC WATER APPLICATIONS
The Circulation Set can be dimensioned according to the number of households in the house or the number of showers in, for example sports centers.
RECOMMENDED KVS-VALUES
-
Number of households in the house or the number of showers in, for example sports centers.
- A typical household consist of bath, shower, kitchen sink and washbasin with a design flow 3.5 6 evaluated from probability curve with a supply pressure >300kPa (3 bar)
CAPACITY DIAGRAM
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