Circulation unit, Mixing function
GRB300
- Variable primary flow and constant secondary flow
- High efficiency circulation pump with 21 different flow settings and feedback on power consumption
- Compact design
- Pretested and ready to install
The ESBE series GRB300 is a circulation unit with compact design intended for efficient energy transport in heating circuits where flow and temperature control are required. They are suitable for applications such as supply air coil units, fan coils, radiators and comfort cooling.
Circulation units series GRB300 are supplied with a rotary mixing valve with a bypass canal in six variants with different Kvs values from 0.4 to 4.0. The 2-way function enables a variable primary flow and a constant secondary flow. The valve is adjusted manually with a knob but can be equipped with an actuator or controller.
The circulation units are equipped with thermometers, high-class insulation shell and a highly efficient circulation pump with 21 different flow settings directly in the pump and feedback of flow, power consumption and pump settings.
Product range
Installation support
Install ESBE Circulation unit GRB300 (sv)
Operation
Installation example
Documents
| Name | Download |
| Installation instruction GRB300 |
|
Technical data
Technical data
| Pressure class: | PN 10 |
| Working pressure: | 1,0 MPa |
| Insulation: | EPP λ 0,036 W/mK |
| EEI (Energy Efficiency Index), circulation pump: | <0,20 |
| 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: | min. +0°C, max. +95°C |
| Ambient temperature: | min. 0°C, max. +40°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 Yonos PICO 15/1-6 130 | |
| Power supply: | 230 ± 10% V AC, 50/60 Hz |
| Power consumption: | 4 — 40 W |
| Enclosure rating: | IP X4D |
| Insulation class: | F |
| EEI (Energy Efficiency Index), circulation pump: | <0,20 |
Integrated valve
| ESBE VRD138, DN20-0,4 | |
| DN: | 20 |
| Kvs: | 0,4 |
| 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) |
| ESBE VRD138, DN20-0,63 | |
| DN: | 20 |
| Kvs: | 0,63 |
| 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) |
| ESBE VRD138, DN20-1 | |
| DN: | 20 |
| Kvs: | 1 |
| 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) |
| ESBE VRD138, DN20-1,6 | |
| DN: | 20 |
| Kvs: | 1,6 |
| 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) |
| ESBE VRD138, DN20-2,5 | |
| DN: | 20 |
| Kvs: | 2,5 |
| 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) |
| ESBE VRD138, DN20-4 | |
| DN: | 20 |
| Kvs: | 4 |
| 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) |
Conformity
SI 2016 No. 1105
EMC 2014/30/EU
RoHS3 2015/863/EU
ErP 2009/125/EU
SI 2016 No. 1091
SI 2012 No. 3032
SI 2010 No. 2617
Dimensioning
Wiring
Accessories and spare parts
Options
| Art No. | Reference | Designation | Note | Data sheet | Instruction manual | |
 |
12520100 | ARA639 | ESBE ARA639 Actuator 24V | |
|
|
|
12101300 | ARA661 | ESBE ARA661 Actuator 230V | |
|
|
 |
12721100 | CRA211 | ESBE CRA211 Controller | |
|
|
 |
12684200 | CRD221 | ESBE CRD221 Controller | |
|
|
 |
66000500 | GMA321 | ESBE GMA321 Manifold for 2 circulation units, without integrated hydraulic separator function. | DN20 | |
|
 |
66000600 | GMA331 | ESBE GMA331 Manifold for 3 circulation units, without integrated hydraulic separator function. | DN20 | |
|
Spare parts
| Art No. | Reference | Designation | Note | Data sheet | Instruction manual | |
 |
67004100 | GSP941 | ESBE GSP907 Pump Wilo Yonos PICO 15/1-6 130 | DN20 | |
|
Download area
Download area
| Type | Preview | Download |
| Installation instruction | GRB300 |
|
| Certificate | EAC certificate (RU) |
|
Related materials
Related products
 |
GDA200, GDA300 | The ESBE series GDA200 & GDA300 are circulation units designed for direct supply of energy to the system in the most efficient way. | Data sheet | Installation instruction | Installation instruction | Installation instruction | Installation instruction | Installation instruction | Installation instruction | Installation instruction |
Applications
Applications
Circulation unit equipped with rotary mixing valve with 2-way function. The circulation unit is intended for heating circuits where a constant secondary flow and temperature control are required.