
ir Technology Systems, Inc.
Air Technology Systems, Inc.
Guide Spec's - Standard Features "Quick-Reference" Table
Selected Standard Features - "OHS" Series
3-1
"OHS" Model 012/040-( ) 012/040-H( ) 048/060-( ) 048/120-D( )
SELECTED STANDARD FEATURES:
TEMPERATURE CONTROL
• Cooling Only Std Std Std Std
• Heating / Reheating Control Opt Opt Opt Opt
HUMIDITY CONTROL
• Electrode Canister Steam Humidifier Opt Opt Opt Opt
• Dehumidification Mode with Reheat Opt Opt Opt Opt
CONTROLS
• A-Tech-1.1 single stage controls Std Std Std N/A
• A-Tech-1.2 two stage controls Opt Opt Opt Std
• C-Tech-10, A-Tech-20, C6000 T/H Microprocessor Controls Opt Opt Opt Opt
CABINET
• All Aluminum Construction Std Std Std Std
• Insulated SS or Polymer Condensate Drain Pan Std Std Std Std
• 1/2", 2 lb Density Thermal & Sound Insulation Std Std Std Std
• Rubber Hanging Vibration Isolators Std Std Std Std
FILTERS / GRILLES
• Spot Coolers with bottom supply / return filter grille Std N/A N/A N/A
• Ducted Units with flanged ducted connections Opt Std Std Std
DX-REFRIGERATION CIRCUIT
• R22 Refrigerant Std Std Std Std
• R407C Refrigerant Opt Opt Opt Opt
• Scroll Type Compressor(s), (unless otherwise noted) Std Std Std Std
• High Efficiency, Aluminum Fin / Copper Tube Coils Std Std Std Std
• Thermal Expansion Valve Std Std Std Std
• Refrigerant Sight Glass & Filter/Drier Strainer Std Std Std Std
• Refrigerant Service Valves Std Std Std Std
BLOWERS / MOTORS
• Direct-Drive Evaporator Motors Std N/A N/A N/A
• Belt-Drive Evaporator Motors N/A Std Std Std
ELECTRICAL
• Power Supply ------------------------- See Electrical Tables Section 5 -------------------------
• Multi-Voltage Control Transformer (24V Class II) Std Std Std Std
• Individual Motor Starter(s) / Contactor(s) Std Std Std Std
SAFETY FEATURES
• Condensate Pan Overflow Safety Switch(es) Std Std Std Std
• High / Low Refrigerant Pressure Switches (DX units) Std Std Std Std
• Motor Overcurrent and Overload Protection Per UL 1995 Std Std Std Std
SPECIFIC MODEL STANDARD FEATURES:
AIR COOLED
• Low Ambient Head Pressure Control ------------------- Three types available 0°F, -20°F or -30°F -------------------
• Integral (model OHS-()-AS) or Remote Air Cooled Condenser Std Std Std Std
WATER / GLYCOL COOLED
• 2-way, 150 psig Water/Glycol Regulating Valves Std Std Std Std
• High Pressure & 3-way Valves Opt Opt Opt Opt
• Coaxial, Tube-in-Tube Heat Exchanger Std Std Std Std
ALL SPLIT DX SYSTEMS
• Liquid Line Solenoid Valve to Prevent Liquid Slugging Std Std Std Std
DUAL CIRCUIT DX SYSTEMS
• Two(2) Independent Refrigerant Circuits N/A N/A N/A Std
• Two(2) Equal Horsepower Scroll Compressors (1 per circuit) N/A N/A N/A Std
• A-Tech-1.2 two stage controls N/A N/A N/A Std
CHILLED WATER SYSTEMS
• 2-way, 300 psig Motorized Valve Std Std Std Std
• Modulating, High Pressure & 3-way Valves Opt Opt Opt Opt
CODE CONFORMANCE
• NRTL Conformance Compliance to UL 1995 Standard Std Std Std Std
• NYC MEA-163-88-E / Chicago Code Approval Std Std Std Std
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