GRC111, Wilo pump GRC112, Grundfos pump GRC141, Wilo pump GRC142, Grundfos pump GRC211, Wilo pump GRC212, Grundfos pump
GRC111, Wilo pump GRC112, Grundfos pump GRC141, Wilo pump GRC142, Grundfos pump GRC211, Wilo pump GRC212, Grundfos pump

Circulation unit

GRC100, GRC200

The ESBE series GRC is a circulation mixing unit which is intended for heating circulations where an outstanding flow and outdoor temperature control are required. Equipped with two shut-off valves with thermometers, check valve, high class insulation shell and high efficiency circulation pump. The GRC series is delivered with a 3-way rotary progressive mixing valve and actuator combined with outdoor temperature controller. The Circulation Mixing Unit ensures best regulation performances independent from flow rate and low oversizing risk thanks to the progressive valve characteristic, as well as the perfect heating curve characteristic.

  • Outstanding flow control thanks to the progressive characteristic of the valve
  • Perfect heating curve characteristic
  • High class insulation shell
  • One size fits all – auto adapt + progressive characteristic

Product range

GRC111_GBC111 front_B-01
GRC111, GRC141
GRx111_GBx111 side_RGB_A-01
GRC112_GBC112 front_A-01
GRC112, GRC142
GRC112_GBC112 side_A-01
GRC211_GBC211 front_RGB_B-01
GRC211
GRx211_GBx211 side_RGB_A-01
GRC212_GBC212 front_A-01
GRC212
GRC212_GBC212 side_A-01
Series GRC111
Art.no.ReferenceDNPumpConnection IConnection JWeight kgNoteNTCNTC = National Trade Code
61040200GRC11125Wilo 25/6G 1"G 1½"6.3Controller CRC111 
61040700GRC11132Wilo 25/7.5G 1¼"G 1½"7.0Controller CRC111 
Series GRC112
Art.no.ReferenceDNPumpConnection IConnection JWeight kgNoteNTCNTC = National Trade Code
61040900GRC11225Grundfos 25-50G 1"G 1½"6.4Controller CRC111 
61041100GRC11232Grundfos 25-70G 1¼"G 1½"7.1Controller CRC111 
Series GRC141
Art.no.ReferenceDNPumpConnection IConnection JWeight kgNoteNTCNTC = National Trade Code
61041300GRC14125Wilo 25/6G 1"G 1½"7.0Controller CRD122, with room display unit 
61041400GRC14132Wilo 25/7.5G 1¼"G 1½"7.8Controller CRD122, with room display unit 
Series GRC142
Art.no.ReferenceDNPumpConnection IConnection JWeight kgNoteNTCNTC = National Trade Code
61041500GRC14225Grundfos 25-50G 1"G 1½"7.1Controller CRD122, with room display unit 
61041600GRC14232Grundfos 25-70G 1¼"G 1½"7.9Controller CRD122, with room display unit 
Series GRC211
Art.no.ReferenceDNPumpConnection IConnection JWeight kgNoteNTCNTC = National Trade Code
61040300GRC21125Wilo 25/6G 1"G 1½"7.2Controller 90C-1A 
61040800GRC21132Wilo 25/7.5G 1¼"G 1½"7.9Controller 90C-1A 
Series GRC212
Art.no.ReferenceDNPumpConnection IConnection JWeight kgNoteNTCNTC = National Trade Code
61041000GRC21225Grundfos 25-50G 1"G 1½"7.3Controller 90C-1A 
61041200GRC21232Grundfos 25-70G 1¼"G 1½"8.0Controller 90C-1A 

Installation support

Operation
GRCx00_RGB_A-01
Installation examples
Appl_Circ Unit_Mixing_Multi-01
Installation instruction GRC100, GRC200
Installation instruction GBA100 (EE, FI, RU, CZ)
Installation instruction GRC100, GRC200, Wilo Pump
Installation instruction GRC100, GRC200, Grundfos Pump

Technical data

Technical data
Pressure class: PN 6 
Media temperature, max.: +110 °C
min.: 0 °C
Ambient temperature, GRC100: max. +50 °C
GRC200: max. +40 °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 Mixing valve Max. differential pressure drop: 100 kPa
Close off pressure: 200 kPa
Leakrate in % of flow*: <0,05 %
* Differential pressure 100kPa (1 bar) 
Characteristics: See diagram 
The integrated Controller, GRC110 Controller type: CRC111 
Power supply: 230±10% VAC, 50Hz 
Power consumption: 10 VA
Running time at max. speed: 30 s
Enclosure rating: IP41 
Protection class: II 
Erp Temperature controls class: III 
Energy efficiency contribution: 1.5 %
The integrated Controller, GRC140 Controller type: CRD122 
Power supply - Actuator unit: 230±10% VAC, 50Hz 
Power supply - wireless room display unit: 2x 1.5 V LR6/AA 
Power consumption - 230 V AC: 10 VA
Battery endurance, wireless room display unit: 1 year
Running time at max. speed: 30 s
Enclosure rating - Actuator unit: IP41 
Enclosure rating - Room display unit: IP20 
Protection class: II 
Erp Temperature controls class: VII 
Energy efficiency contribution: 3.5 %
Radio frequency CRD120: 868 MHz
Conformity: ITU region 1 approved acc. to EN 300220-2 
The integrated Controller, GRC200 Controller type: 90C-1A-90 
Power supply: 230±10% VAC, 50/60Hz 
Power consumption: 5 VA
Running time at max. speed: 120 s
No. of input sources: 5 
No. of output sources: 1 
Enclosure rating: IP54 
Protection class: II 
Erp Temperature controls class: III 
Energy efficiency contribution: 1.5 %
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 
Characteristics: See diagrams 
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.
Characteristics VRG430_RGB_GB_C-01
Available pressure, Wilo pump GRx 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 = 45 kPa.
Available pressure, Grundfos pump GRx 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

CRA912

Voltage adaptor CRA912, 230V — 24V.
17053300CRA912Voltage adaptor, 230V — 24V    

CRB914

Communication cable CRB914, 20m.
17055700CRB914Communication cable, 20m    

CRC911

Outdoor sensor CRC911
17056000CRC911Outdoor sensor    

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

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Data sheet GRC100, GRC200
Installation instruction GRC100, GRC200
Installation instruction GRC100, GRC200 (EE, FI, RU, CZ)
Instruction 2-way valve function
Installation instruction GRC100, GRC200, Wilo Pump
Installation instruction GRC100, GRC200, Grundfos Pump
Installation instruction 90C-1A-90
Spare Parts Circulation units
2D Image GRC111, GRC141
2D Image GRC112, GRC142
2D Image GRC211
2D Image GRC212
3D drawing (stp file) GRC111, DN25
3D drawing (stp file) GRC111, DN32
3D drawing (stp file) GRC112, DN25
3D drawing (stp file) GRC112, DN32
3D drawing (stp file) GRC141, DN25
3D drawing (stp file) GRC141, DN32
3D drawing (stp file) GRC142, DN25
3D drawing (stp file) GRC142, DN32
3D drawing (stp file) GRC211, DN25
3D drawing (stp file) GRC211, DN32
3D drawing (stp file) GRC212, DN25
3D drawing (stp file) GRC212, 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

District heating

Oil and gas

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