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 
EEI (Energy Efficiency Index), Wilo circulation pump: <0,21 
Grundfos circulation pump: <0,20 
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. 
The integrated Circulation pump: Power supply: 230±10% VAC, 50/60Hz 
Power consumption - Wilo 25/6: 3-45 W
Power consumption - Wilo 25/7.5: 3-76 W
Power consumption - Grundfos 25-50: 2-34 W
Power consumption - Grundfos 25-70: 2-53 W
Enclosure rating: IP X4D 
Insulation class: F 
EEI - Wilo 25/6: <0,20 
EEI - Wilo 25/7,5: <0,21 
EEI - Grundfos: <0,20 
Characteristics: See diagram 
Conformity CE_A-01
LVD 2014/35/EU
EMC 2014/30/EU
RoHS 2011/65/EU
PED 2014/68/EU, article 4.3
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

GMA411

Hydraulic separation for 1 circulation unit.
66001100GMA411Manifold GMA411 Manifold for 1 unit, with integrated hydraulic separator function.

GMA421

Manifold for 2 circulation units, without integrated hydraulic separator function.
66001200GMA421Manifold GMA421 Manifold for 2 units.

GMA431

Manifold for 3 circulation units, without integrated hydraulic separator function.
66001300GMA431Manifold GMA431 Manifold for 3 units.

GMA441

Manifold for 4 circulation units, without integrated hydraulic separator function.
66001400GMA441Manifold GMA441 Manifold for 4 units.

GMA451

Manifold for 5 circulation units, without integrated hydraulic separator function.
66001500GMA451Manifold GMA451 Manifold for 5 units.

GMA521

Manifold for 2 circulation units, with integrated hydraulic separator function.
66001600GMA521Manifold GMA521 Manifold for 2 units, with integrated hydraulic separator function.

GMA531

Manifold for 3 circulation units, with integrated hydraulic separator function.
66001700GMA531Manifold GMA531 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

GMA411

GMA400, GMA500

Series GMA400 and GMA500 are manifolds for circulation units including insulation shell according to EnEV2014 and wall brackets
GMA411

Related applications

Underfloor heating

Quick Links