GRA212_GRA232.png GRA311_B.png
GRA212_GRA232.png GRA311_B.png

Circulation unit, Mixing function

GRA200, GRA300

  • Outstanding flow control thanks to the progressive characteristic of the valve
  • 2 different types of actuator: 3-point or proportional control signal (depending on version)
  • QuickFit interface between actuator and valve - no tools needed
  • 3 different high efficiency circulation pumps
  • Available in 3 sizes: DN20, DN25, DN32
  • High class insulation shell
  • Pretested and ready to use
  • Compact design

The ESBE series GRA200 and GRA300 are circulation units intended for heating circuits where an outstanding flow and temperature control are required. Equipped with two shut-off valves with thermometers, check valve, high class insulation shell and a high efficiency circulation pump. The units are delivered with a 3-way rotary progressive mixing valve which ensures best regulation performances independent from flow rate and low oversizing risk.

The Series GRA200 comes with actuator series ARA661 with 3-point control signal, 230V AC, or actuator series ARA639 proportional control signal,24V AC/DC. The circulation units are available in DN25 and DN32 with either a Wilo or Grundfos pump. 
The Series GRA300 with very compact dimensions are equipped with actuator series ARA661. Series GRA300 is available in DN20 with a Wilo pump with PWM control signal.

Product range

GRA211

GRA211_GRA231.png
GRA211_GBA211 front_A-01.png
GRA211_GBA211 side_A-02.png
Art.no. Reference DN Pump Connection I Connection J Weight [kg] Note
61042100 GRA211 25 Wilo PARA 25/6 G 1" G 1½" 5,8 Replaces 61040100
61042200 GRA211 32 Wilo PARA 25/8 G 1¼" G 1½" 6,2 Replaces 61040400

GRA212

GRA212_GRA232.png
GRA212 front_A-01.png
GRA212 side_A-02.png
Art.no. Reference DN Pump Connection I Connection J Weight [kg] Note
61042300 GRA212 25 Grundfos UPM3 AUTO 25-50 G 1" G 1½" 5,9 Replaces 61040500
61042400 GRA212 32 Grundfos UPM3 AUTO 25-70 G 1¼" G 1½" 6,1 Replaces 61040600

GRA231

GRA211_GRA231.png
GRA211_GBA211 front_A-01.png
GRA211_GBA211 side_A-02.png
Art.no. Reference DN Pump Connection I Connection J Weight [kg] Note
61042500 GRA231 25 Wilo PARA 25/6 G 1" G 1½" 5,8 Replaces 61043200
61042600 GRA231 32 Wilo PARA 25/8 G 1¼" G 1½" 6,2 Replaces 61043300

GRA232

GRA212_GRA232.png
GRA212 front_A-01.png
GRA212 side_A-02.png
Art.no. Reference DN Pump Connection I Connection J Weight [kg] Note
61042700 GRA232 25 Grundfos UPM3 AUTO 25-50 G 1" G 1½" 5,9 Replaces 61043400
61042800 GRA232 32 Grundfos UPM3 AUTO 25-70 G 1¼" G 1½" 6,1 Replaces 61043500

GRA311

GRA311_B.png
GRA300 front_B-01.png
GRA300 side_B-02.png
Art.no. Reference DN Pump Connection I Connection J Weight [kg] Note
61043600 GRA311 20 Wilo PARA STG 15/8 G ¾" G 1" 4,4 Replaces 61043100
Installation support

Operation

Operation

Installation example

Installation example
The primary function of the motorized mixing unit (GRx) is flow temperature control, mixing function. The Series GRx are used in heating systems with controllers. The motorized mixing units need external controller which will measure the flow temperature and control the actuator according to the system needs. The circulation units series GRx are the perfect choice for applications where mixing function is required, and the temperature comfort is set by an external controller.
Technical data

Technical data

Pressure class: PN 10
Working pressure: 1,0 MPa
Insulation: EPP λ 0,036 W/mK
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 - Series GRA211, GRA231: min. +5°C, max. +100°C
Media temperature - Series GRA212, GRA232: min. +5°C, max. +110°C
Media temperature - Series GRA300: min. +5°C, max. +100°C
Ambient temperature: min. 0°C, max. +55°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
Wilo PARA 25-130/8-75/SC
Power supply: 230 ± 10% V AC, 50/60 Hz
Power consumption: 10 — 75 W
Enclosure rating: IP X4D
Insulation class: F
EEI (Energy Efficiency Index), circulation pump: <0,21
Grundfos UPM3 AUTO 25-50 130
Power supply: 230 ± 10% V AC, 50/60 Hz
Power consumption: 4 — 33 W
Enclosure rating: IP44
EEI (Energy Efficiency Index), circulation pump: <0,20
Grundfos UPM3 AUTO 25-70 130
Power supply: 230 ± 10% V AC, 50/60 Hz
Power consumption: 2 — 52 W
Enclosure rating: IP44
EEI (Energy Efficiency Index), circulation pump: <0,20
Wilo PARA STG 15-130/8-60/0
Power supply: 230 ± 10% V AC, 50/60 Hz
Power consumption: 2 — 60 W
Enclosure rating: IP X4D
Insulation class: F
EEI (Energy Efficiency Index), circulation pump: <0,20

Integrated valve

ESBE VRG438, DN20-8 QF
Pressure class: PN10
Kvs: 8
max. Differential pressure drop: 100 kPa (1 bar)
Close off pressure: 200 kPa (2 bar)
Leakrate in % of flow: <0,05%*
*: Differential pressure 100 kPa (1 bar)
ESBE VRG432, DN20-8 QF
Pressure class: PN10
Kvs: 8
max. Differential pressure drop: 100 kPa (1 bar)
Close off pressure: 200 kPa (2 bar)
Leakrate in % of flow: <0,05%*
*: Differential pressure 100 kPa (1 bar)
ESBE VRG432, DN25-12 QF
max. Differential pressure drop: 100 kPa (1 bar)
Close off pressure: 200 kPa (2 bar)
Leakrate in % of flow: < 0,05%*
*: Differential pressure 100kPa (1 bar)

Integrated Actuator

ESBE ARA661 Quick Fit
Control signal: 3-point SPDT
Power supply: 230 ± 10% V AC, 50Hz
Power consumption: 5 VA
Running time 90°: 120 s
Enclosure rating: IP41
Protection class: II
ESBE ARA661 Quick Fit
Control signal: 3-point SPDT
Power supply: 230 ± 10% V AC, 50Hz
Power consumption: 5 VA
Running time 90°: 120 s
Enclosure rating: IP41
Protection class: II
ESBE ARA639 Quick Fit
Control signal: Proportional
Feedback signal, "U": 2-10 V AC
Power supply: 24 ± 10% V AC/DC, 50/60 Hz
Power consumtion - Operation: AC: 5 W / DC: 2,5 W
Power consumption - Dimensioning: AC: 11 VA / DC: 6 VA
Running time 90°: 15/30/60/120 s
Enclosure rating: IP41
Protection class: II

Conformity

Conformity
LVD 2014/35/EU
EMC 2014/30/EU
RoHS3 2015/863/EU
PED 2014/68/EU, article 4.3
ErP2015
EnEV2014

Dimensioning

Please see Data sheet

Wiring

Please see Installation instruction
Accessories and Spare Parts

Spare parts

Art No. Reference Designation Note Data sheet Instruction manual
67006100 67006100 GSP961 ESBE GSP961 Actuator ARA661 120s 230V 3p QF download download
67006200 67006200 GSP962 ESBE GSP962 Actuator ARA639 Prop 15-120s 24V QF download download
67003300 67003300 GSP933 ESBE GSP933 Ball valves incl thermometer DN20 G¾", 2 pcs/package DN20, G¾" download download
67003800 67003800 GSP933 ESBE GSP933 Ball valves incl thermometer DN20 G1", 2 pcs/package DN20, G1" download download
67003400 67003400 GSP911 ESBE GSP911 Ball valves incl thermometer DN 25, 2 pcs/package DN25 download download
67004000 67004000 GSP911 ESBE GSP911 Ball valves incl thermometer DN 32, 2 pcs/package DN32 download download
67005200 67005200 GSP951 ESBE GSP951 Pump Wilo PARA 25/6 DN25 download download
67005300 67005300 GSP951 ESBE GSP951 Pump Wilo PARA 25/8 DN32 download download
67005400 67005400 GSP952 ESBE GSP952 Pump Grundfos UPM3 AUTO 25-50 DN25 download download
67005500 67005500 GSP952 ESBE GSP952 Pump Grundfos UPM3 AUTO 25-70 DN32 download download
67005600 67005600 GSP932 ESBE GSP932 Pump Wilo STG 15/8 DN20 download download

Options

Art No. Reference Designation Note Data sheet Instruction manual
66001100 66001100 GMA411 ESBE GMA411 Hydraulic separation for 1 circulation unit. download download
66000500 66000500 GMA321 ESBE GMA321 Manifold for 2 circulation units, without integrated hydraulic separator function. DN20 download download
66000600 66000600 GMA331 ESBE GMA331 Manifold for 3 circulation units, without integrated hydraulic separator function. DN20 download download
66001200 66001200 GMA421 ESBE GMA421 Manifold for 2 circulation units, without integrated hydraulic separator function. download download
66001300 66001300 GMA431 ESBE GMA431 Manifold for 3 circulation units, without integrated hydraulic separator function. download download
66001400 66001400 GMA441 ESBE GMA441 Manifold for 4 circulation units, without integrated hydraulic separator function. download download
66001500 66001500 GMA451 ESBE GMA451 Manifold for 5 circulation units, without integrated hydraulic separator function. download download
66001600 66001600 GMA521 ESBE GMA521 Manifold for 2 circulation units, with integrated hydraulic separator function. download download
66001700 66001700 GMA531 ESBE GMA531 Manifold for 3 circulation units, with integrated hydraulic separator function. download download
Download area

Download area

Type Preview Download
Data sheet GRA200, GRA300 download
Installation instruction GRA200 (en) download
Installation instruction GRA300 (en) download
Installation instruction GRA200 (DN25/DN32), Wilo Pump download
Installation instruction GRA200 (DN25/DN32), Grundfos Pump download
Installation instruction GRA300 (DN20), Wilo Pump download
Certificate Declaration of Conformity, GRAx00 download
Certificate Declaration of Conformity UK CA, GRAx00 download
Certificate Building Product Declaration, GRA200 download
Certificate Building Product Declaration, GRA300 download
Image GRA211 & GRA231, high res download
Image GRA212 & GRA232, high res download
Image GRA311, high res download
2D Image GRA211 & 231 download
2D Image GRA212 & GRA232 download
2D Image GRA311 download
3D drawing (stp file) GRA211 & GRA231, DN25 download
3D drawing (stp file) GRA211 & GRA231, DN32 download
3D drawing (stp file) GRA212 & GRA232, DN25 download
3D drawing (stp file) GRA212 & GRA232, DN32 download
3D drawing (stp file) GRA311, DN20 download
Applications

Applications

Circulation unit mixing valve together with actuator to control cooling systems.

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.

Products

GST200

Circulation unit with mixing valve together with actuator to control heating systems.