Atmos GIGA-N

Design

Application

• The pumping of heating water (in accordance with VDI 2035), chilled water and water-glycol mixtures without abrasive substances in heating, chilled water and cooling systems.
• Applications for irrigation, building services, general industry, power stations, etc.

Equipment/function

Single-stage low-pressure centrifugal pump in close-coupled design with coupling, coupling guard, motor and baseplate

• Mechanical seal

Type key

Technical data

• Permissible temperature range:
  • 16 bar: -20 °C to +120 °C
  • 13 bar: -20 °C to +140 °C
• Mains connection 3~400 V, 50 Hz
• IP rating IP55
• Nominal diameter DN 32 to DN 150
• Max. operating pressure 16 bar

Materials

• Pump housing and lantern. Standard: EN-GJL-250
• Impeller: Standard: EN-GJL-200; others on request
• Shaft: 1.4021
• Mechanical seal: AQEGG; other mechanical seals on request

Construction

• Single-stage low-pressure centrifugal pump as baseplate pump with axial suction ports with flanged bearing brackets and axle fastening for flexibly coupled drives
• Spacer coupling (sleeve coupling) is standard; this provides the option of leaving the motor in position when dismantling the rotor unit
• Variant ...-P5 without spacer coupling (at reduced price, see price list)

Scope of delivery

• Pump
• Installation and operating instructions
• Bare shaft pump or
• Pump on baseplate with coupling and coupling guard, without motor or
• Completely mounted pump on baseplate with electric motor

Options

• Variant ...-P5 without spacer coupling (at reduced price)
• Other materials and versions on request
• Other voltages and frequencies available on request.

Accessories

Automatic speed control:

for automatic, infinitely variable pump power control. Please contact Wilo for more information on “Switchgears and control devices”.

Commissioning

• If pumps with 2900 rpm are installed inside residential buildings, then corresponding noise reducing measures are to be implemented.
• Pump curves and specific motor powers depend on the respective fluid being pumped. Pump curves and power vary considerably when fluids are conveyed that differ from water in thickness and/or viscosity. For this, please observe the table “Recommended limit values for dimensioning”. The recommended limit values for dimensioning are calculated as follows: Qoptimum (volume flow at which the pump reaches its best efficiency), to be read from the individual pump curve; Qmin and Qmax factors to be taken from the “Recommended limit values for dimensioning” table. Qmin configuration = Qmin x Qoptimum Qmax configuration = Qmax x Qoptimum example: Size of Atmos GIGA-N 032-125 Qmin = 0.3 x 8 = 2.4 m3/h Qmax = 1.2 x 8 = 9.6 m3/h
• Load-sensitive pump output All Wilo standard pumps are equipped with IEC standard motors. The Wilo control devices are suitable for automatic load-sensitive speed control of pumps that are driven by any standard motors of conventional manufacture.
• Main/standby operation