NOS - NOLH - NOES Series

STANDARDISED HORIZONTAL PUMPS

For the circulation of abrasive residue-free heating, cooling or iced water in urban systems, collective residential and tertiary buildings.

ECHNICAL SPECIFICATIONS

Flow rate of up to : 1,800 m³/h
Manometric head of up to: : 150 mWC
Max. operating pressure on discharge: : 16 bar
Max. ambient temperature : 40°C
Fluid temperature limit (NOS) : -20 to +170°C
DN round-flanged ports (NOLH) : DN 32 to DN 150
Fluid temperature limit (NOES) : -20 to +120°C
DN round-flanged ports (NOES) : DN 150 to DN 300
Fluid temperature limit (NOLH) : -40 to +170°C
DN round-flanged ports (NOLH) : DN 32 to DN 300
Mains supply : 3~230 V (<4 kW), 3~400 V, 50 Hz
P2 power : Up to 710 kW
Simple configuration : Possibility of back-up or cascade mode
Regulation mode : Fixed speed

APPLICATIONS

For the circulation of abrasive residue-free heating, cooling or iced water in urban systems, collective residential and tertiary buildings.

BENEFTIS

• Energy savings
  Compatible with external speed variation
• Easy installation
  Cast-iron frame as standard for a more rigid assembly
• Easy maintenance
  Hydraulic performance and functional connection sizes conform to EN 733 standard
  Spacer option allows for removal of motor without unfastening the pump housing or moving the motor
  Completely maintenance-free, standardised mechanical seal to +120°C max. NOES: braided
    version -20°C to +105°C
  Bearings lubricated for life
• Pump protection
  Reinforced one-piece bearings and shaft, ISO 5199
  IP 55 protection class for the electrical part of the motor
  NOLH : 316 stainless steel or bronze hydraulic version (25/35/45 bearings)
• Acoustic comfort
  Quiet operation

DESIGN

• Motor
  IE2 motor featuring asynchronous technology (IE3 on demand), standardised according to IEC and DIN/VDE 0530 IE2
• Hydraulics
  Standardised horizontal single-stage pump
  EN 733 (DIN 24255) standardised cast-iron housing, mounted on a rigid frame or bare shaft
  Cast-iron or bronze 2D hydraulics. Impeller diameter can be adapted to optimise the duty point
  Reinforced one-piece bearings and shaft, ISO 5199