The NDQ comprises three models and N2DQ range comprises five models using refrigerants R404A/R507 and R407C.  The low temperature models (-40 °C to -10°C) cover a capacity range of 6.22 kW to 12.22 kW while the medium temperature units (-20°C to +10°C) range from 7.19 kW to 20.7 kW.

Standard Features

• CE Marked Unit
• Weatherproof housing with separate,
  acoustically lined compressor compartment
• Concealed, low noise condenser fans
• Copper tube coil with vinyl-coated
  aluminium fins
• Capacity control 100-10-0% for NDQ, 100-5-0% for N2DQ
• Fully-wired control panel with Mains Isolator
• Electronic step controller
• Low ambient fan speed control
• Twin scroll compressors (with liquid injection  and oil management system on low temperature ‘LS’ models)
• MCB protected crankcase heaters
  compressor motor starter with short circuit and overload protection
• Compressor contactors
• Compressor start delay and anti-recycle time integrated into step control.
• Volt-free contact for alarm signal
• HP/LP switch auto reset
• Sight glass and filter drier
• Liquid receiver with fitted pressure relief valve
• Rotalock service valves on compressors and receiver
• Oil level sight glass

Options

• Oil separator 

Searle NDQ -N2DQ brochure

Searle NDQ Installation and Maintenance Manual 

Searle N2DQ Installation and Maintenance Manual