Return temperature unit, Thermostatic mixing function
GST200
- Thermostatic constant temperature control
- Desired mixing temperature setting between 50°C and 75°C
- Product available in DN25
- High efficiency circulation pump
- High class insulation shell
- Pretested and ready to use
- Compact design
The ESBE series GST200 is a return temperature unit designed for heating systems with solid fuel heating source. Equipped with two shut-off valves with thermometers, check valve, high class insulation shell and high efficiency circulation pump.
The GST200 is delivered with a 3-way thermostatic load valve for constant temperature control of the boiler circuit. The thermostatic load valve has adjustable temperature setting in the range of 50°C – 75°C.
Product range
GST240
| Art.no. | Reference | DN | Pump | Temperature range [°C] | Connection I | Connection J | Weight [kg] | Note |
| 61121200 | GST241 | 25 | Wilo PARA 25-130/6 | 50‒70 | G 1" | G 1½" | 5,6 | Replaces 61120200 |
Installation support
Install ESBE Circulation unit
Operation
Installation examples
In both cases the GST200 secures that the boiler gets up to a high combustion temperature to ensure the lowest emission, high efficiency of the boiler reduce tarring and increase life span of the boiler (preventing condensation). The benefit of using the unit in these applications is the protection of the boiler against condensation, increasing the life span of the boiler and providing the right temperature through the whole combustion process.
Documents
| Name | Download |
| Installation instruction GST200 |
|
Technical data
Technical data
| Pressure class: | PN 10 |
| Working pressure: | 1,0 MPa |
| Insulation: | EPP λ 0,036 W/mK |
| EEI (Energy Efficiency Index), circulation pump: | ≤0,20 |
| Media, Heating water: | in accordance with VDI2035 |
| Media, Water / Glycol mixtures: | max. 50 % ; water / glycol mixtures are affecting the pump performance. In case of Applications where water / glycol mixtures are used, pump performance should be considered. |
| Media temperature, max.: | +100 °C |
| Media temperature, min.: | +5 °C |
| Ambient temperature, max. : | +58 °C |
| Ambient temperature, min.: | 0 °C |
| Connections, Internal thread (G): | ISO 228/1 |
| Connections, External thread (G): | ISO 228/1 |
| Material, in contact with water |
Components: Brass, Cast iron, Steel Sealing materials: PTFE, Aramid fibre, EPDM |
Integrated pump
| Wilo PARA 25-130/6-43/SC | |
| Power supply: | 230 ± 10% V AC, 50/60 Hz |
| Power consumption: | 3 — 43 W |
| Enclosure rating: | IP X4D |
| Insulation class: | F |
| EEI (Energy Efficiency Index), circulation pump: | <0,20 |
Integrated valve
| ESBE VTC422, DN25-4,5 50-70°C | |
| max. Differential pressure drop: | 100 kPa (1 bar) |
| Temperature range: | 50 - 70°C |
| Leakrate in % of flow: | A-AB: Tight sealing; B-AB: Tight sealing |
| Rangeability Kv/Kv min, A-AB: | 100 |
Conformity
SI 2016 No. 1105
EMC 2014/30/EU
RoHS3 2015/863/EU
ErP 2009/125/EU
SI 2016 No. 1091
SI 2012 No. 3032
SI 2010 No. 2617
Dimensioning
Wiring
Accessories and spare parts
Options
| Art No. | Reference | Designation | Note | Data sheet | Instruction manual | |
 |
66001100 | GMA411 | ESBE GMA411 Hydraulic separation for 1 circulation unit. | DN25/32 | |
|
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66001200 | GMA421 | ESBE GMA421 Manifold for 2 circulation units, without integrated hydraulic separator function. | DN25/32 | |
|
 |
66001300 | GMA431 | ESBE GMA431 Manifold for 3 circulation units, without integrated hydraulic separator function. | DN25/32 | |
|
 |
66001400 | GMA441 | ESBE GMA441 Manifold for 4 circulation units, without integrated hydraulic separator function. | DN25/32 | |
|
 |
66001500 | GMA451 | ESBE GMA451 Manifold for 5 circulation units, without integrated hydraulic separator function. | DN25/32 | |
|
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66001600 | GMA521 | ESBE GMA521 Manifold for 2 circulation units, with integrated hydraulic separator function. | DN25/32 | |
|
 |
66001700 | GMA531 | ESBE GMA531 Manifold for 3 circulation units, with integrated hydraulic separator function. | DN25/32 | |
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Spare parts
| Art No. | Reference | Designation | Note | Data sheet | Instruction manual | |
 |
57080600 | VTC942 | ESBE VTC942 Exchange kit series VTC422, 50 - 70°C | VTC400 | |
|
 |
67003400 | GSP911 | ESBE GSP911 Ball valves incl thermometer DN 25, 2 pcs/package | DN25 | |
|
 |
67005200 | GSP951 | ESBE GSP951 Pump Wilo PARA 25/6 | DN25 | |
|
Download area
Download area
| Type | Preview | Download |
| Data sheet | GST200 |
|
| Installation instruction | GST200 |
|
| Installation instruction | GST200, Wilo Pump (de, en, fr) |
|
| Certificate | Declaration of Conformity, GST200 |
|
| Certificate | Declaration of Conformity UKCA, GST200 |
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| Certificate | Building Product Declaration BPD3, GST200 |
|
| Certificate | EAC certificate (RU) |
|
| Image | GST241, high res |
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| 2D Image | GST241 |
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| 3D drawing (stp file) | GST241, DN25 |
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Related materials
Related products
Applications
Applications
Return temperature unit designed for solid fuel applications, where a return temperature control is required.
Return temperature unit designed for solid fuel applications, where a return temperature control is required.
Quick links
Quick links
| New generation ESBE circulation units |