Circulation unit, Fixed temperature
GFA100
- Thermostatic constant temperature control
- Adjustable temperature setting
- High class insulation shell
- High efficiency circulation pump
The ESBE series GFA100 is a circulation mixing unit designed for heating circuits, where a constant temperature control is required. Equipped with two shut-off valves with thermometers, check valve, high class insulation shell and high efficiency circulation pump. The GFA100 is delivered with a 3-way thermostatic mixing valve for constant temperature control of the heating circuit. The thermostatic mixing valve has adjustable temperature setting.
Product range
GFA111



Art.no. | Reference | DN | Pump | Temperature range [°C] | Connection I | Connection J | Weight [kg] |
61020100 | GFA111 | 25 | Wilo 25/6 | 20–55 | G 1" | G 1½" | 5,4 |
GFA112



Art.no. | Reference | DN | Pump | Temperature range [°C] | Connection I | Connection J | Weight [kg] |
61020300 | GFA112 | 25 | Grundfos 25-50 | 20–55 | G 1" | G 1½" | 5,5 |
Installation support
Guidance for installers, Circulation Units
Operation

Installation examples


Technical data
Technical data
Pressure class: | PN 6 |
Working pressure: | 0,6 MPa |
Insulation: | EPP λ 0,036 W/mK |
EEI (Energy Efficiency Index), circulation pump: | <0,21 |
Media, Heating water: | in accordance with VDI2035 |
Media, Water/Glycol mixtures: | max. 50 % (above 20% admixture, the pump data must be checked) |
Media, Water/Ethanol mixtures: | max. 28 % |
Media temperature, max.: | +110 °C |
Media temperature, min.: | 0 °C |
Ambient temperature, max.: | +50 °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
Grundfos UPM3 25-50 | |
Power supply | 230 ± 10% V AC, 50/60 Hz |
Power consumption | 2 — 34 W |
Enclosure rating | IP X4D |
Insulation class | F |
EEI (Energy Efficiency Index), circulation pump | <0,20 |
Grundfos UPM3 25-70 | |
Power supply | 230 ± 10% V AC, 50/60 Hz |
Power consumption | 2 — 53 W |
Enclosure rating | IP X4D |
Insulation class | F |
EEI (Energy Efficiency Index), circulation pump | <0,20 |
Wilo Yonos Para 25/6-130 RKA | |
Power supply | 230 ± 10% V AC, 50/60 Hz |
Power consumption | 3 — 45 W |
Enclosure rating | IP X4D |
Insulation class | F |
EEI (Energy Efficiency Index), circulation pump | <0,20 |
Wilo Yonos Para 25/7,5 RKA | |
Power supply | 230 ± 10% V AC, 50/60 Hz |
Power consumption | 3 — 76 W |
Enclosure rating | IP X4D |
Insulation class | F |
EEI (Energy Efficiency Index), circulation pump | <0,21 |
Integrated valve
ESBE VTA572, DN20-4,5 | |
max. Differential pressure drop | 100kPa (1bar) |
Temperature range | 20 - 55⁰C |
Temperature stability | ±3⁰C * |
* | * Valid at unchanged hot/return water pressure, minimum flow rate 9 l/min. Minimum temperature difference between hot water inlet and mixed water outlet 10°C and recommended maximum temperature difference between return water and mixed water outlet: 10°C |
ESBE VTA572, DN25-4,8 | |
max. Differential pressure drop | 100kPa (1bar) |
Temperature range | 20 - 55⁰C |
Temperature stability | ±3⁰C * |
* | * Valid at unchanged hot/return water pressure, minimum flow rate 9 l/min. Minimum temperature difference between hot water inlet and mixed water outlet 10°C and recommended maximum temperature difference between return water and mixed water outlet: 10°C |

EMC 2014/30/EU
RoHS3 2015/863/EU
PED 2014/68/EU, article 4.3





Dimensioning
Wiring
Accessories and Spare Parts
Spare parts
Options
Download area
Download area
Type | Preview | Download |
Data sheet | GFA100 |
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Installation instruction | GFA100 (de, en, fr, it, pl, sv) |
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Installation instruction | GFA100 (cs, ee, fi, ru) |
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Installation instruction | GFA100, Wilo Pump |
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Installation instruction | GFA100, Grundfos Pump |
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Certificate | Declaration of Conformity, GFA100 |
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Certificate | Declaration of Conformity UK CA, GFA100 |
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Certificate | Building Product Declaration BPD3, GFA100 |
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Certificate | EAC certificate (RU) |
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Certificate | UKRSEPRO certificate (UA) |
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Image | GFA111, high res |
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Image | GFA112, high res |
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2D Image | GFA111 |
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2D Image | GFA112 |
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3D drawing (stp file) | GFA111, DN25 |
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3D drawing (stp file) | GFA111, DN32 |
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3D drawing (stp file) | GFA112, DN25 |
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3D drawing (stp file) | GFA112, DN32 |
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Applications
Applications
Circulation unit with thermostatic fixed temperature control for under floor heating.
Products
GFA200, GFA300Quick links