Systemair WQH 904 BLN

Technical features

• 8 sizes
• Cooling capacity from 151 to 370 [kW]
• Heating capacity from 170 to 418 [kW]
• Acoustic versions
• BLN (Basic Low Noise)
• ELN (Extra Low Noise)
• Two refrigerant circuit
• Four scroll compressors
• Brazed plates heat exchangers
• Thermostatic expansion valve (Electronic expansion valve standard for sizes 1104 to 1204)
• User-friendly microprocessor based control
• Power supply 400 [V] / 3 [pH] / 50 [Hz]

Standard features

• Double set-point
• Dynamic set point (Climatic, 4-20 [mA], 0-10 [V], 0-5 [V], 0-1 [V])
• Sequence phase control
• Rubber pad
• Water differential pressure switch
• Control circuit transformer

Factory installed options

• Modbus protocol kit for BMS
• Compressor soft-starter
• Power factor correction capacitors
• Electronic expansion valve (standard for sizes 1104 to 1204)
• Compressors overload protection
• Automatic circuit breakers
• Condensing control kit
• Additional heating device wiring kit
• Mechanical gauges kit
• Compressor jackets
• On board hydrokit
• Desuperheater

Field installed accessories

• Remote ON/OFF control
• Remote keyboard panel
• Sequencer, up to max four units
• Condensing control kit
• Outdoor air sensor for weather compensation
• Additional heating device wiring kit
• Compressor jacket
• Water flow switch
• Water pressure switch
• Victaulic to threaded pipe connection
• Spring type anti-vibration mounts
• Water filter