Circulation unit, Constant temperature

GFA200, GFA300

  • Thermostatic constant temperature control
  • Desired mixing temperature set between 20°C and 55°C
  • Available in 3 sizes: DN20, DN25, DN32
  • 3 different high efficiency circulation pumps
  • High class insulation shell
  • Pretested and ready to use
  • Compact design

The ESBE series GFA200 and GFA300 are circulation units equipped with thermostatic mixing valves. They are 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 GFAx00 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 in the range of 20°C – 55°C. The circulation units series GFA200 are available in DN25 and DN32 with either a Wilo or Grundfos pump. Series GFA300 is available in DN20 with a Wilo pump with PWM control signal.

Product range

GFA211

Art.no. Reference DN Pump Temperature range [°C] Connection I Connection J A [mm] Weight [kg] Note
61021100 GFA211 25 Wilo PARA 25/6 20−55 G 1" G 1½" 146 5,6 Replaces 61020100
61021200 GFA211 32 Wilo PARA 25/8 20−55 G 1¼" G 1½" 157 5,9 Replaces 61020200

GFA212

Art.no. Reference DN Pump Temperature range [°C] Connection I Connection J A [mm] Weight [kg] Note
61021300 GFA212 25 Grundfos UPM3 AUTO 25-50 20−55 G 1" G 1½" 141 5,7 Replaces 61020300
61021400 GFA212 32 Grundfos UPM3 AUTO 25-70 20−55 G 1¼" G 1½" 141 5,8 Replaces 61020400

GFA311

Art.no. Reference DN Pump Temperature range [°C] Connection I Connection J Weight [kg] Note
61023200 GFA311 20 Wilo PARA STG 15/8 20–55 G ¾" G 1" 4,0 Replaces 61023100
Installation support

Operation

Operation

Installation examples

Installation examples
The primary function of the thermostatic mixing unit (GFx) is flow temperature control, mixing function. The Series GFx of circulation units are used is systems where the heating source is not equipped with a controller or a controller with limited functions. The circulation units series GFx are the perfect choice for applications where mixing function is required and temperature comfort is not the highest priority.
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: min. +5°C, max. +100°C
Ambient temperature - Series GFA211: min. 0°C, max. +58°C
Ambient temperature - Series GFA212: min. 0°C, max. +70°C
Ambient temperature - Series GFA300: min. 0°C, max. +58°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 VTA378
max. Differential pressure drop 100 kPa (1bar)
Temperature range 20 - 55⁰C
Temperature stability ±3⁰C*
* * Valid at unchanged hot/return water pressure, minimum flow rate 9 l/min. Minimum temperature difference between hot water inlet and mixed water outlet 10°C and recommended maximum temperature difference between return water and mixed water outlet: 10°C
ESBE VTA572, DN20-4,5
max. Differential pressure drop 100kPa (1bar)
Temperature range 20 - 55⁰C
Temperature stability ±3⁰C *
* * Valid at unchanged hot/return water pressure, minimum flow rate 9 l/min. Minimum temperature difference between hot water inlet and mixed water outlet 10°C and recommended maximum temperature difference between return water and mixed water outlet: 10°C
ESBE VTA572, DN25-4,8
max. Differential pressure drop 100kPa (1bar)
Temperature range 20 - 55⁰C
Temperature stability ±3⁰C *
* * Valid at unchanged hot/return water pressure, minimum flow rate 9 l/min. Minimum temperature difference between hot water inlet and mixed water outlet 10°C and recommended maximum temperature difference between return water and mixed water outlet: 10°C

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
37001700 37001700 VTA937 ESBE VTA937 Exchange kit VTA370, 20 - 55°C VTA370 download download
37101500 37101500 VTA957 ESBE VTA957 Exchange kit series VTA570, 20 - 55°C VTA570 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
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
66001100 66001100 GMA411 ESBE GMA411 Hydraulic separation for 1 circulation unit. 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 GFA200, GFA300 download
Installation instruction GFA200 (en) download
Installation instruction GFA300 (en) download
Installation instruction GFA200 (DN25/DN32), Wilo Pump download
Installation instruction GFA200 (DN25/DN32), Grundfos Pump download
Installation instruction GFA300 (DN20), Wilo Pump download
Certificate Declaration of Conformity, GFAx00 download
Certificate Declaration of Conformity UK CA, GFAx00 download
Certificate Building Product Declaration, GFA200 download
Certificate Building Product Declaration, GFA300 download
Image GFA211, high res download
Image GFA212, high res download
Image GFA311, high res download
2D Image GFA211 download
2D Image GFA212 download
2D Image GFA311 download
3D drawing (stp file) GFA211, DN25 download
3D drawing (stp file) GFA211, DN32 download
3D drawing (stp file) GFA212, DN25 download
3D drawing (stp file) GFA212, DN32 download
3D drawing (stp file) GFA311, DN20 download
Applications

Applications

Circulation unit with thermostatic fixed temperature control for under floor heating.

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