GFA111, Wilo Pump GFA112, Grundfos Pump
GFA111, Wilo Pump GFA112, Grundfos Pump

Circulation unit

GFA100

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.
  • Thermostatic constant temperature control
  • Adjustable temperature setting
  • High class insulation shell
  • High efficiency circulation pump

Product range

GFA111 front_B-01
GFA111
GFx111 side_RGB_A-01
GFA112 front_B-01
GFA112
GFA112 side_B-01
Series GFA111
Art.no.ReferenceDNPumpTemperature range °CConnection IConnection JWeight kgNoteNTCNTC = National Trade Code
61020100GFA11125Wilo 25/620–55G 1"G 1½"5.4  
61020200GFA11132Wilo 25/7.520-55G 1¼"G 1½"6.0  
Series GFA112
Art.no.ReferenceDNPumpTemperature range °CConnection IConnection JWeight kgNoteNTCNTC = National Trade Code
61020300GFA11225Grundfos 25-5020–55G 1"G 1½"5.5  
61020400GFA11232Grundfos 25-7020–55G 1¼"G 1½"6.1  

Installation support

Operation
GFA100_RGB_A-01
Installation examples
Appl_Circ Unit_Semi_HS-01
Appl_Circ Unit_Multi_HS-01
Installation instruction GFA100
Installation instruction GFA100 (EE, FI, RU, CZ)
Installation instruction GFA100, Wilo Pump
Installation instruction GBA100, Grundfos Pump

Technical data

Technical data
Pressure class: PN 6 
Media temperature, max.: +95 °C
min.: 0 °C
Ambient temperature, max.: +50 °C
min.: 0 °C
Working pressure: 0.6 MPa
Connections, Internal thread (G): ISO 228/1 
External thread (G): ISO 228/1 
Insulation: EPP λ 0.036 W/mK 
Media, Heating water  (in accordance with VDI2035) 
Water/Glycol mixtures, max. 50 %
(above 20% admixture, the pump data must be checked)  
Water/Ethanol mixtures, max. 28 %
Material, in contact with water: Components of Brass, Cast iron, Steel 
Sealings material of: PTFE, Aramid fibre, EPDM 
Conformity: PED 2014/68/EU, article 4.3 
The integrated Thermostatic mixing valve: Max. differential pressure drop: 100 kPa
Temperature range: 20–55 °C
Temperature stability*: ± 3 °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 CE_A-01
LVD 2014/35/EU
EMC 2014/30/EU
RoHS 2011/65/EU
ErP2015_A-01
ErP 2009/125/EC
ErP 2015
$name
EnEV 2014
Circulation pump Wiring LTC100_A-01
The circulation pump should be preceded by a multi-pole contact breaker in the fixed installation.
Available pressure, Wilo pump GFx Wilo_dimensioning_verA_GB-01
Dimensioning, Pump Capacity diagram
Example: Start with the heating demand of heating circuit (e.g. 25 kW) and move horizontally to the right in the diagram to the Δt = 15°C (temperature difference between flow and return of the heating circuit). Next go up and find working point and read the available pressure of the pump on the left – ∆p = 39 kPa.
Available pressure, Grundfos pump GFx Grundfos_dimensioning_verA_GB-01

Accessories and spare parts

Options
ImageArt.no.ReferenceDesignationNational trade codeNoteData sheetInstructions manual

GMA121

Manifold for 2 circulation units, without integrated hydraulic separator function.
66000100GMA121Manifold GMA121 Manifold for 2 units. 

GMA131

Manifold for 3 circulation units, without integrated hydraulic separator function.
66000200GMA131Manifold GMA131 Manifold for 3 units. 

GMA221

Manifold for 2 circulation units, with integrated hydraulic separator function.
66000300GMA221Manifold GMA221 Manifold for 2 units, with integrated hydraulic separator function. 

GMA231

Manifold for 3 circulation units, with integrated hydraulic separator function.
66000400GMA231Manifold GMA231 Manifold for 3 units, with integrated hydraulic separator function. 
Spare parts
ImageArt.no.ReferenceDesignationNational trade codeNoteData sheetInstructions manual

VTA957

Exchange kit VTA957, series VTA570, 20 - 43°C.
37101200VTA957Exchange kit series VTA570, 20 - 43°C   

GSP901

ESBE GSP901 Pump RKA 25/6 Wilo
67000100GSP901Pump RKA 25/6 Wilo DN25 

GSP901

ESBE GSP901 Pump RKA 25/7.5 Wilo
67000300GSP901Pump RKA 25/7.5 Wilo DN32 

GSP901

ESBE GSP901 Pump UPM3 25-50 Grundfos
67000400GSP901Pump UPM3 25-50 Grundfos DN25 

GSP901

ESBE GSP901 Pump UPM3 25-70 Grundfos
67000500GSP901Pump UPM3 25-70 Grundfos DN32 

GSP903

ESBE GSP903 Thermometer upgrade set, 2 pcs/package
67000600GSP903Thermometer upgrade set, 2 pcs/package    

GSP911

ESBE GSP911 Ball valves incl thermometer DN 25, 2 pcs/package
67003400GSP911Ball valves incl thermometer DN 25, 2 pcs/package DN25  

GSP911

ESBE GSP911 Ball valves incl thermometer DN 32, 2 pcs/package
67003500GSP911Ball valves incl thermometer DN 32, 2 pcs/package DN32  

GSP910

ESBE GSP910 Insulation circulation unit DN 25/32
67004400GSP910Insulation circulation unit DN 25/32    

Download area

Find here direct related product information for download. If you don’t find your specific need here please look further into below mentioned "Quick links" or this website's “Search” and “Support” area.
Data sheet GFA100
Installation instruction GFA100
Installation instruction GFA100 (EE, FI, RU, CZ)
Installation instruction GFA100, Wilo Pump
Installation instruction GFA100, Grundfos Pump
2D Image GFA111
2D Image GFA112
3D drawing (stp file) GFA111, DN25
3D drawing (stp file) GFA111, DN32
3D drawing (stp file) GFA112, DN25
3D drawing (stp file) GFA112, DN32

Related products

GMA121

GMA100

Series GMA100 is manifolds for 2 or 3 circulation units including insulation according to EnEV2014 and wall brackets.
GMA121
GMA221

GMA200

Series GMA200 is manifolds for 2 or 3 circulation units including integrated hydronic junction, insulation according to EnEV2014 and wall brackets.
GMA221

Related applications

Underfloor heating

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