Atmos GIGA-NHT 50/125-1.1/4-S2
| Hydraulic data | |
|---|---|
| Maximum operating pressure PN | 25 bar |
| Min. fluid temperature Tmin | -20 °C |
| Max. fluid temperature Tmax | 350 °C |
| Min. ambient temperature Tmin | -15 °C |
| Max. ambient temperature Tmax | 50 °C |
| Motor data | |
|---|---|
| Mains connection | 3~400 V, 50 Hz |
| Voltage tolerance | ±10 % |
| Rated power P2 | 1.1 kW |
| Motor efficiency class | IE3 |
| Rated current IN | 2.35 A |
| Rated speed n | 1455 1/min |
| Power factor cos φ100 | 0.72 |
| Insulation class | F |
| Protection class motor | IP55 |
| Installation dimensions | |
|---|---|
| Pipe connection on the suction side DNs | DN 65 |
| Pipe connection on the discharge side DNd | DN 50 |
| Materials | |
|---|---|
| Pump housing | Ductile cast iron |
| Impeller | Grey cast iron |
| Shaft | Stainless steel |
| Mechanical seal | AQ1VGG |
Atmos GIGA-NHT 50/125-1.1/4-S2
∆: Connection diagram delta connection
Y: Connection diagram star connection
Motor protection switch required on-site. Check the direction of rotation! To change the direction of rotation, exchange any two phases.
| P2≤ 3 kW | 3~400 V Y |
| 3~230 V ∆ | |
| P2≥ 4 kW | 3~690 V Y |
| 3~400 V ∆ |
After removing the bridges, Y-∆ start is possible.
| Product data | |
|---|---|
| Brand | Wilo |
| Product description | Atmos GIGA-NHT 50/125-1.1/4-S2 |
| Minimum order quantity | 1 |
| Packaging | |
|---|---|
| Packaging type | Special pallet |
| Packaging property | Transport packaging |
| Pieces per pallet | 1 |
| Number per layer | 1 |
Single-stage centrifugal pump as baseplate pump in accordance with EN 733, PN 25, with axial suction ports and radial discharge ports for installation on a base. Pump with support foot and flanged bearing bracket, coupling, coupling guard and motor mounted to same baseplate. The pump is suitable for pumping liquids with high temperatures such as superheated water up to 200 °C and heat carrier oil up to 350 °C. A thermal barrier separates the pump volute from the shaft outlet seal. This lowers the temperature in the mechanical seal chamber without the need for an external cooling system. This allows the use of a standardised, uncooled mechanical seal that is mounted directly on the shaft. A large cooling chamber provides space for venting the mechanical seal to avoid dry running.
IEC motor with 3 PTC thermistor sensors. Shaft sealing with bidirectional bellows mechanical seal. Ductile cast iron housing, stainless steel shaft, grey cast iron impeller. Cataphoretic coating as standard for all cast iron components in contact with fluid.
Coupling:
- Spacer coupling
The spacer coupling is an elastic coupling with a spacer. The spacer reduces maintenance costs, and further motor orientation when changing the mechanical seal is not necessary.
| Materials | |
|---|---|
| Pump housing | Ductile cast iron |
| Impeller | Grey cast iron |
| Shaft | Stainless steel |
| Shaft seal | AQ1VGG |
| Operating Data | |
|---|---|
| Min. fluid temperature Tmin | -20 °C |
| Max. fluid temperature Tmax | 350 °C |
| Maximum operating pressure p | 25.0 bar |
| Max. ambient temperature Tmax | 50 °C |
| Motor data | |
|---|---|
| Mains connection | 3~400 V, 50 Hz |
| Voltage tolerance | ±10 % |
| Motor efficiency class | IE3 |
| Rated power P2 | 1100 W |
| Rated speed n | 1455 1/min |
| Rated current IN | 2.35 A |
| Power factor cos φ100 | 0.72 |
| Motor efficiency 50% ηM 50% | 83 % |
| Motor efficiency 75% ηM 75% | 84.5 % |
| Motor efficiency 100% ηM 100% | 84.5 % |
| Protection class | IP55 |
| Insulation class | F |
| Installation dimensions | |
|---|---|
| Pipe connection on the suction side DNs | DN 65 |
| Pipe connection on the discharge side DNd | DN 50 |
| Ordering information | |
|---|---|
| Brand | Wilo |
| Product description | Atmos GIGA-NHT 50/125-1.1/4-S2 |
Installation and operating instructions
Wilo-Atmos GIGA-NHT
| Article Number | 8249758 |
| Edition | 2023-10 |
| Number of pages | 44 |
| Language | en |
PDF (5 MB)With Wilo as your partner, you can not only be sure of choosing high-quality product solutions, but also of benefiting from a comprehensive, worry-free package of well thought-out services. We collaborate to develop a service concept tailored to your individual needs; with our expertise and personal consultancy, we make sure that the operation of your systems is as energy-efficient, reliable and economical as possible. All the while our competent Wilo service technicians are ready to assist you with fast, reliable and on-time support.
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