Nexus Submittal

HIGH EFFICIENCY CONDENSING UNIT HEATER
NXSD-3
PROJECT:
UNIT TAG:
Nexus
®
brings leading edge condensing heat exchanger technology to
Sterling HVAC’s successful unit heater product offering.
Sterling HVAC's Nexus gas-red unit heaters brings tomorrow's technologies
to today's products. Engineered for performance Nexus incorporates leading
edge control and combustion technologies to customers across North America.
Nexus' tri-metal condensing heat exchanger, state-of-the-art control platform
and proprietary fully modulating pre-mix burner design safely provide industry
leading operating efciencies of up to 99%!
Available in 6 sizes - 50, 100, 150, 200, 300 and 400 MBH, in both natural
gas and LP gas, Nexus can be vented through PVC and CPVC for
application exibility. All units are eld convertible to separated combustion.
STATE-OF-THE-ART CONTROL PLATFORM
• 3:1 Turndown - Self Modulating
• Outdoor/Indoor Reset Settings
• BMS Communication (2-10 VCD/4-20 mA Input)
• Modbus Standard
• LED Diagnostic Lights (External)
• Single Thermostat or Outdoor Sensor can Control Multiple Units
APPLICATION FLEXIBILITY
• NG/LP Single Orice Field Conversion
• PVC/CPVC Vent Compatible
• Field Convertible to Separated Combustion
• Multiple Voltage Congurations
• OSHA Fan Guards
• Durable Brushed Stainless Steel Cabinet
• Condensate Float Switch and Trap Standard
• Optional Condensate Pump and Condensate Neutralizer
• Single or 2-Stage Capable Gas Valve
• Residentially Certied for use as a Utility Heater
ELECTRONICALLY AIR/FUEL COUPLED
• Proprietary Design for Optimal Efciency
• Unique Premix Burner Technology
• 3:1 Full Turndown Modulation
• Maximum Efciency through Precision Modulation
• SafeSense Blocked Inlet and Flue Sensing Technology
• Auto-adjusts for Altitude Requiring no Field Modications
• Maintains Fuel/Air Ratio with Partial Blockage without Decreasing
Performance until Safety Trip
TRI-METAL HYBRID HEAT EXCHANGER
• Full Condensing Efciencies at all Firing Rates
• Up to 99% Maximum Efciency (Full Modulation)
• 95% Efciency (Full Input)
• All Stainless Steel Tube for Enhanced Corrosion Protection
• Brass and Aluminum Fins for Improved Thermal Heat Transfer
260 North Elm St., Westeld, MA 01085
[phone] Fax: [phone]
www.sterlinghvac.com
09/18
100 MBH
400 MBH