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®
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NetworkAIR AFX Series
Precision Air-Conditioning Units—60 Hz
Technical Data
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Contents Available Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Downflow 1 Upflow front-return 1 Upflow rear-return 1 Indoor rear-discharge centrifugal condenser 1 Indoor top-discharge centrifugal condenser 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Introduction 3 Capacity 3 Air pattern 3 Control 3 Configuration 4 Front access 4 Humidity control 4 Compliance 4 Model Selection. . . . . . . .
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Performance Specifications. . . . . . . . . . . . . . . . . . . . . . . . . 17 Net cooling capacity—air/remote condensing 17 Net cooling capacity—water 18 Net cooling capacity—glycol 19 Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Air system 21 Coolant requirements 21 Pump system 21 Water regulating valve–2-Way/3-Way, single seated 22 Humidification—solid state electrode canister 22 Filters 22 Evaporator coil 22 Compressor—scroll 22 Elec
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Upflow rear-return—20–28 ton 47 Indoor rear-discharge centrifugal condenser—6–8 ton 48 Indoor rear-discharge centrifugal condenser—10–18 ton 49 Indoor rear-discharge centrifugal condenser—20–28 ton 50 Indoor top-discharge centrifugal condenser—6–8 ton 51 Indoor top-discharge centrifugal condenser—10–18 ton 52 Indoor top-discharge centrifugal condenser—20–28 ton 53 Air-Cooled Condensers and Drycoolers . . . . . . . . . . . . . . . 55 Key to the model number 55 Air-cooled condenser
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Available Models Downflow 6–8 ton 10–18 ton 20–28 ton Upflow front-return 6–8 ton 10–18 ton 20–28 ton Upflow rear-return 6–8 ton 10–18 ton 20–28 ton Indoor rear-discharge centrifugal condenser 6–8 ton 10–18 ton 20–28 ton Indoor top-discharge centrifugal condenser 6–8 ton 10–18 ton 20–28 ton APC NetworkAIR AFX Series: Available Models 1
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Overview Introduction The APC AFX series precision air-conditioning system provides compact, quiet, efficient, and reliable system solutions in the expanding precision air- conditioning market. The AFX series is offered in a wide variety of capacities, configurations, and air patterns within an extremely compact cabinet size. Precision environmental control requirements now reach far beyond the confines of the traditional data center or computer room to encompass a larger suite of applicati
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Configuration Air-cooled. Unit used with an air-cooled condenser. Refrigerant lines must be run between the indoor unit and the condenser. Air cooled units require low maintenance and have low operating costs. Configurations are: Air-cooled with remote outdoor condenser. Air-cooled with indoor floor mounted condenser. Water-cooled. Unit used with a cooling tower or other source of water. Field refrigeration piping is eliminated by a factory sealed and tested system. Water piping to and
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Model Selection AFX – X X X – X – X X – X U RGX 3 ULW HFHV6 Z RIO R U ; VL H OI S HJDWO & R R O F FD \ WL † $ % P QLO DR Q D QW H ; J $ 0 & R D W U Q $ $U LF RROG H D WHU FRRO: : GH F \ ROF RROHG PRWH 5H5 RQVGFQ L H J Q APC NetworkAIR AFX Series: Model Selection 5 * *O LR LJXQI .$ ;; QR LQ SDLQJ 9R 8 8 RZ HV ; $) $) ’ ’ ZQ
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Standard Features Microprocessor The microprocessor controller provides state of the art control for a wide variety of environmental applications including the demanding requirements controller of data centers, control rooms, clean rooms, switch rooms, MRI facilities, CAT scan facilities and UPS Rooms. Operator Interface is provided by the four-line, 80-character backlit LCD display. A user-friendly menu structure along with clearly defined prompts allow the operator to easily move about t
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Configuration options include: Fahrenheit or celsius display Alarm input polarity Compressor minimum on time Alarm enable Compressor minimum off time Temperature deadbands Power loss restart time delay Humidity deadbands Redundant unit grouping Small room delay Common alarm contact. A common alarm relay is installed on every microprocessor. In the event of an alarm condition, the relay will change state. The user can select which alarms change the state of the relay. This
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Blower assembly The AFX series includes multiple, centrifugal blower assemblies that have been engineered for quiet, reliable operation. Lower blower speeds reduce noise and extend belt and bearing life to 200,000L hours. Permanently 10 lubricated bearings, a single-belt variable pitch drive, and an adjustable motor base all ensure dependable operation. In addition, the air return patterns evenly distribute air across the cooling coil. Electrical panel The electrical panel contains the con
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Each refrigeration system includes: Thermal expansion valve with equalizer High and low pressure switches Sight glass with moisture indicator Filter drier Liquid line solenoid valve Cooling coil The AFX utilizes dual distributors on one circuit of the refrigeration system. During dehumidification the smaller distributor is turned off effectively reducing the active circuits of the evaporator coil. During this mode of operation the evaporating temperature is decreased, resulting i
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Emergency drain Systems are provided with two drain pans. The primary stainless steel condensate drain pan lies directly under the cooling coil. A secondary pan emergency drain pan provides additional protection by catching any water before it reaches the subfloor and becomes a problem. An optional factory supplied water detector in the emergency drain pan functions as your early warning system in the event of any water problems. A threaded flange is factory supplied for secondary drain co
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Optional Features The following optional features are available on the AFX Series unless otherwise noted. Certain combinations of options may not be available. Emergency/ Smoke detector(s). The factory installed smoke detector(s) is designed to sense smoke concentration in the return air stream. Upon detecting smoke environmental concentration an audible and visual alarm on the microprocessor will be activated and the unit will immediately shut-down. Firestat. A Firestat is available for i
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Control/monitoring Custom alarm dry contact closures. Each unit can be equipped with any or all of the listed dry contact closures. Upon activation of the associated alarm, a discreet Normally Open or Normally Closed contact is available for remote monitoring of that discreet alarm. High Temperature Alarm Low Temperature Alarm High Humidity Alarm Low Humidity Alarm Compressor High Pressure Alarm Fan Status Alarm Change Filter Alarm Fire Alarm (with addition of optional firesta
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Reheat Hot water or steam reheat. An on/off solenoid valve for steam reheat, or a modulating valve for hot water reheat maintains the dry bulb temperature when the system is in dehumidification and heat mode. Completely factory pre-piped, the system includes a copper tube, aluminum-fin reheat coil, solenoid valve, float, and thermostatic and steam trap for steam reheat only. Hot gas reheat. The copper tube, aluminum fin hot gas reheat coil maintains the leaving dry bulb temperature when the
