GN X1 Geothermal distribution shaft
Technical data
GN X1 Geothermal distribution shaft
Prefabricated distribution/collector shaft for connecting geothermal probes. White shaft casing made of PE, with inspection-friendly, light-coloured inner surface. With plastic shaft cover DN 600.
Load class:
200 kg | A 15 | A 35 | B 125 | D 400
Standard version:
- Telescoping
- Transport grommets
- Eyelets for setting in concrete
Connections:
Probes: Ø 25 mm to Ø 50 mm
Heat pump: Ø 40 mm to Ø 250 mm
Optional:
- Buoyancy protection
- Line regulating valves
Max. permissible pressure: 10 bar
Heat pump connection:
- d 63 x 5.73 mm with PVC ball valve
- d 75 x 6.82 mm with butterfly valve
- d 90 x 8.20 mm with butterfly valve
- d 110 x 10.00 mm with butterfly valve
- d 125 x 11.40 mm with butterfly valve
- d 140 x 12.73 mm with shut-off damper
- d 160 x 14.55 mm with shut-off damper
- d 180 x 16.36 mm with shut-off damper
- d 200 x 18.18 mm with shut-off damper
- d 225 x 20.45 mm with shut-off damper
Circular connection:
- d 25 x 2.27 mm
- d 32 x 2.91 mm
- d 40 x 3.64 mm
- d 50 x 4.55 mm
Standard flow meter:
- 2-12 l/min
- 8-28 l/min
- 5-42 l/min
- 35-70 l/min
Material:
Manhole, pipe: PE
Ball valves: PVC
Measuring valves: Plastic
Gaskets: EPDM
Minimum installation depth:
200 kg to A 35: 1.690 mm
B 125: 1.790 mm
D 400: 1.890 mm
Maximum installation depth:
200 kg to A 35: 2.090 mm
B 125: 2.090 mm
D 400: 2.090 mm
Brine distribution shafts must be liquid-tight and preferably made of PE material. Suitable shut-off devices must be provided in the flow and return to each circuit or probe.
Suitable control devices must be installed on the manifolds for hydraulic equalisation of the probes. Filling and venting fittings must be provided. Static requirements must be taken into account when installing and backfilling shafts. Special requirements such as trafficability or installation in standing water must be taken into account when designing the manhole and must be requested separately. Depending on the load case, additional on-site measures for load transfer or buoyancy protection may be required.
The shaft must be backfilled in layers with non-cohesive backfill material that complies with the relevant standards and compacted in layers. The backfill material must be well compactable, permeable, shear-resistant, frost-proof and free of sharp objects. The specifications for bedding in accordance with the DVGW W 400-2 and ATV-A 127 worksheets and DIN EN 805 must be observed. Overbuilding and/or influences due to foundation loads from buildings or similar must be ruled out. The appropriate distances from buildings or other structures must be observed.
The manufacturer’s installation instructions must be observed.
Product description
- Completely prefabricated, installed and pressure-tested PE 100-RC manifold/collector, arranged horizontally at the factory
- Including 2 1’ filling and venting fittings
- 2 connections to the heat pump: Heat pump connection made of PE 100-RC solid wall pipe with shut-off fitting, radially expandable
- Probe flow connection: Probe connection made of PE 100-RC solid wall pipe with PVC ball valve, radially removable
- Probe return connection: Probe connection made of PE 100-RC solid wall pipe with shut-off and adjustable flow meter, radially removable
- All probe connections are welded watertight to the chamber wall and each protrude approx. 100 mm on the outside
Standards to be complied with:
DIN 1054 Subsoil – Safety verifications in earthworks and foundation engineering DIN 4123 Excavations, foundations and underpinning in the area of existing buildings
DIN 4124 Excavation pits and trenches – Slopes, shoring, working space widths
DIN 4084 Ground and slope failure calculations
ATV-A 127 Guideline for the static calculation of sewers and drains
ATV-A 139 Guideline for the construction of drainage sewers and pipes
Connection pipes:
The connecting pipes for the geothermal probes must be laid in accordance with the relevant standards and guidelines, in particular DVGW Code of Practice W 400- 2.
Welding work: Welding work on the connecting pipes and at the shaft connection must be carried out by qualified welders in accordance with the relevant welding guidelines such as DVS Guideline 2207. The manufacturer’s installation instructions must be observed.
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