Centrifugal pump Atmos GIGA-N series

for hot waterfor potable waterglycol water

Overview
The Atmos GIGA-N is an entry-level end-suction (end‑suction) single-stage low‑pressure centrifugal pump designed for continuous operation in industrial and building‑services applications. Wide selection of motors and materials, permissible fluid temperature range from -20 °C to +140 °C, and corrosion‑resistant coatings extend service life. The spacer coupling (standard) enables quick replacement of the mechanical seal. Speed control via Wilo‑EFC and optional bearing temperature/vibration monitoring allow optimized operation and early fault detection. Wilo offers commissioning, maintenance and WiloCare remote‑monitoring services.

Key features

• High overall efficiency through improved hydraulics and availability of IE3/IE4 motors
• Versions suitable for drinking water supply (ACS and UBA compliant) — cataphoretic coating not available for drinking‑water variants
• Cataphoretic coating on cast components for high corrosion resistance (except drinking‑water versions)
• Standardised dimensions, broad motor options and impeller material variants (cast iron, bronze, stainless steel)
• Back‑pull‑out design with spacer coupling for easy maintenance and fast mechanical seal replacement
• Improved impeller design to reduce pressure stress and increase operational reliability
• Speed control via Wilo‑EFC; optional Smart IF module for digital access and remote control

Applications

• Pumping heating water (in accordance with VDI 2035), chilled water and water‑glycol mixtures without abrasive substances
• Irrigation, building services (HVAC), general industry, power stations and similar applications
• Drinking‑water supply for applicable versions

Equipment / Function
Single‑stage low‑pressure centrifugal pump in end‑suction design delivered as block unit with coupling, coupling guard, motor (depending on order) and baseplate. Mechanical seal fitted as standard.

Representative product variants (table)
Examples (abridged):
Atmos GIGA‑N 32/125‑0,25/4 | 4 poles | IE3 | DN50 / DN32 | With spacer | 0.25 kW | 93 kg | Art. 6086289
Atmos GIGA‑N 32/125‑0,25/4‑P5 | 4 poles | IE3 | DN50 / DN32 | Without spacer | 0.25 kW | 93 kg | Art. 6086697
Atmos GIGA‑N 32/125‑1,1/2 | 2 poles | IE3 | DN50 / DN32 | With spacer | 1.10 kW | 101 kg | Art. 6086292
(Series contains many more variants with differing DN, impeller diameters, rated powers and spacer/non‑spacer options.)

Product features

• Dimensions according to EN 733
• Impeller options: EN‑GJL‑200 (standard), bronze or stainless steel on request
• Various IE motor classes available (IE3 / IE4)
• Spacer coupling (standard) — variant …‑P5 = without spacer coupling

Design / Type key
Single‑stage, low‑pressure centrifugal pump with axial suction, baseplate‑mounted. Example: Atmos GIGA‑N 40/200‑11/2 → 40 = pressure flange DN, 200 = impeller nominal diameter [mm], 11 = P2 [kW], 2 = number of poles.

Technical data (summary)

• Permissible fluid temperature: -20 °C … +140 °C
• Maximum operating pressure: 16 bar
• Nominal diameters available: DN 32 … DN 150
• Mains connection (typ.): 3~ 400 V, 50 Hz (other voltages/frequencies on request)
• IP rating: IP55

Materials

• Pump housing and lantern: EN‑GJL‑250 (standard)
• Impeller: EN‑GJL‑200 standard; bronze or stainless steel options on request
• Shaft: 1.4021 (typ.)
• Mechanical seal: AQEGG (other seals available on request)

Construction / Scope of delivery

• Single‑stage low‑pressure centrifugal pump as baseplate pump with axial suction ports and flanged bearing brackets
• Spacer coupling standard (allows motor to remain in position during rotor dismantling)
• Variant …‑P5 = without spacer coupling
• Delivery options: bare shaft pump; pump on baseplate with coupling and guard (without motor); completely mounted pump on baseplate with electric motor

Options & Accessories

• Variant without spacer coupling (…‑P5)
• Other voltages, frequencies, materials and versions on request
• Automatic speed control via Wilo‑EFC for infinitely variable pump power control
• Optional Smart IF module for digital pump access (remote control / Bluetooth via Wilo systems)

Recommended services

• Commissioning
• Supervision and monitoring services
• Maintenance and repair services
• WiloCare full service and Wilo remote monitoring

Characteristics / Technical specifications

• Temperature range: -20 °C to +140 °C
• Max. operating pressure: 16 bar
• DN range: 32 … 150
• Mains: 3~ 400 V, 50 Hz (other on request)
• IP rating: IP55
• Materials: housing EN‑GJL‑250; impellers EN‑GJL‑200/bronze/SS; shaft 1.4021
• Standard coupling: spacer coupling (back‑pull‑out design)
• Motor efficiency classes: IE3 / IE4 options
• Mechanical seal: AQEGG (variants on request)