Thermostatic mixing valve

VTS520

  • High temperature resilience.
  • Anti-scald and anti-legionella protection.
  • Accuracy of regulation.
  • Suitable for HWC (hot water circulation).
The series VTS520 for domestic hot water distribution connected to solar heating systems, where the high water temperatures require extra durable components. VTS520 has asymmetrical flow pattern. These series of valves are also suitable for domestic hot water installations equipped with HWC (hot water circulation).
Product range

VTS522, External thread

Art.no. Reference Temp. range [⁰C] Kvs Connection E A [mm] B [mm] C [mm] D [mm] Weight [kg]
31720100 VTS522 45 - 65 3,2 G 1" 84 62 60 56 0,86
31720300 VTS522 45 - 65 3,5 G 1¼" 84 62 60 56 0,95
31720200 VTS522 50 - 75 3,2 G 1" 84 62 60 56 0,86
31720400 VTS522 50 - 75 3,5 G 1¼" 84 62 60 56 0,95

VTS522, with adapters

Art.no. Reference Temp. range [⁰C] Kvs Connection F A [mm] B [mm] C [mm] D [mm] Weight [kg] Note
31720500 VTS522 45 - 65 3,0 R ¾" 154 97 60 56 1,22 Two check valves for both hot and cold water are included.
Installation support

Operation

Operation

Installation example

Installation example

Documents

Technical data

Technical data

Pressure class: PN 10
Working pressure: 1,0 MPa
max. Differential pressure, Mixing: 0,3 MPa
Temperature stability: ±4 °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.
Conformity:

PED 2014/68/EU, article 4.3

Media temperature, continuosly max.: +110 °C
Media temperature, temporarily max.: +120 °C
Connections, External thread (G): ISO 228/1
Connections, External thread (R): EN 10226-1
Material, Valve housing and other metal parts with fluid contact: Dezincification resistant brass, DZR

Conformity

Conformity
HCACL/4MS UBAList
KTW/WRAS/ACS

Dimensioning

 Dimensioning
Please see data sheet
Accessories and Spare Parts

Connection kit KTD200, KTD300

Art No. Reference Designation Description Note Data sheet Instruction manual
36552200 36552200 KTD212 Connection kit with external thread R ¾" for use on externally threaded valves G 1". Connection kit with external thread R ¾" for use on externally threaded valves G 1". One check valves included. Suits series VTS522, VTS552, VTA331, VTA532, VTA362, VTA562, VTA322, VTA522, VTA352, VTA552, VTA372, VTA572, VMC312. download download
36552300 36552300 KTD212 Connection kit with external thread R 1" for use on externally threaded valves G 1¼". Connection kit with external thread R 1" for use on externally threaded valves G 1¼". One check valves included. Suits series VTS522, VTS552, VTA331, VTA532, VTA362, VTA562, VTA322, VTA522, VTA352, VTA552, VTA372, VTA572, VMC312. download download
36552400 36552400 KTD312 Connection kit with external thread R ¾" for use on externally threaded valves G 1". Connection kit with external thread R ¾" for use on externally threaded valves G 1". Two check valves included. Suits series VTS522, VTS552, VTA331, VTA532, VTA362, VTA562, VTA322, VTA522, VTA352, VTA552, VTA372, VTA572, VMC312. download download
36552500 36552500 KTD312 Connection kit with external thread R 1" for use on externally threaded valves G 1¼". Connection kit with external thread R 1" for use on externally threaded valves G 1¼". Two check valves included. Suits series VTS522, VTS552, VTA331, VTA532, VTA362, VTA562, VTA322, VTA522, VTA352, VTA552, VTA372, VTA572, VMC312. download download

Connection kit KCD300

Art No. Reference Designation Description Note Data sheet Instruction manual
36552900 36552900 KCD313 Connection kit with compression fittings CPF 22mm for use on externally threaded valves G1". Connection kit with compression fittings CPF 22mm for use on externally threaded valves G1". Two check valves included. Suits series VTS522, VTS552, VTA331, VTA532, VTA362, VTA562, VTA322, VTA522, VTA352, VTA552, VTA372, VTA572, VMC312. download download

Spare parts

Art No. Reference Designation Description Note Data sheet Instruction manual
37120100 37120100 VTS952 ESBE VTS952 Exchange kit series VTS520, 45 - 65°C Exchange kit VTS952, series VTS520, 45 - 65°C. VTS520 download download
37120200 37120200 VTS952 ESBE VTS952 Exchange kit, series VTS520, 50 - 75°C Exchange kit VTS952, series VTS520, 50 - 75°C. VTS520 download download
Download area

Download area

Applications

Applications

Solar system with maximum use of the stratification in the storage tank.