American Power Conversion AFX User Manual
TM
Network AFX SeriesAIR
Precision Air-Conditioning Units—60 Hz
®
Technical Data
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Microprocessor controller 7
Overall cabinet 8
Blower assembly 9
Electrical panel 9
Humidifier 9
Electric reheat 9
Refrigeration system and compressor 9
Cooling coil 10
Condenser 10
Air filter 10
Water-regulating valves 10
Airflow sensor 10
Clogged filter alarm 10
Emergency drain pan 11
Optional Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Emergency/environmental 13
External components 13
Control/monitoring 14
Reheat 15
System Components 15
APC NetworkAIR AFX Series: Contents i
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
Electric Reheat 23
Hot gas reheat 23
Hot water reheat 23
Steam reheat 23
Drycooler 23
Centrifugal indoor condenser 23
Physical data 24
Connection sizes 24
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Electric Reheat—6–14 ton 25
Electric Reheat—18–28 ton 26
Steam/hot water/or no-reheat—6 –14 ton 27
Steam/hot water/or no-reheat—18–28 ton 28
Indoor centrifugal condenser units 29
Guide Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
General 31
Product 31
Individual systems 34
Options 36
Dimensional Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Downflow—6–8 ton 39
Downflow—10–18 ton 40
Downflow—20–28 ton 41
Upflow front-return—6–8 ton 42
Upflow front-return—10–18 ton 43
Upflow front-return—20–28 ton 44
Upflow rear-return—6–8 ton 45
Upflow rear-return—10–18 ton 46
ii APC NetworkAIR AFX Series: Contents
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—physical data 56
Air-cooled condenser—electrical data 57
Single-fan air-cooled condenser—6 ton 58
Dual-fan air-cooled condenser—6–14 ton 59
Triple-fan air-cooled condenser—14–20 ton 60
Dual-fan air-cooled condenser—20–26 ton 61
Triple-fan air-cooled condenser—26–28 ton 62
Drycooler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Glycol cooled drycooler—physical data 63
Glycol cooled drycooler—electrical data 63
Dual-fan fluid cooler—6–8 ton 64
Triple-fan fluid cooler—10–12 ton 65
Dual-fan fluid cooler—14–18 ton 66
Triple-fan fluid cooler—20–28 ton 67
Pump Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Pump performance 69
Pump electrical data 69
Guidelines for Installation . . . . . . . . . . . . . . . . . . . . . . . . . 71
Room preparation 71
Unit location 71
Service access 71
Receiving the unit 71
Rigging 72
Floorstand 72
Utility connections 72
Power unit 72
Humidifier connections 72
Condensate drain 72
Water supply to humidifier 72
Water supply 73
APC Worldwide Customer Support . . . . . . . . . . . . . . . . . . 75
APC NetworkAIR AFX Series: Contents iii
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
Overview
Introduction The APC AFX series precision air-conditioning system provides compact,
quiet, efficient, and reliable system solutions in the expanding precision airconditioning 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 applications, referred to as technology rooms.
Typical technology room applications included:
• Computer rooms
• Telecommunication facilities
• Clean rooms
• Power equipment
• Medical equipment rooms
• Archives
• LAN environments
A worldwide network of APC representatives is fully qualified to provide
engineering, sales, installation and service for our products.
Our commitment to quality is demonstrated by the APC industry-leading
two-year parts warranty.
Capacity Available are 6 through 28 nominal tons (20 kW–96 kW) in nine models and
3 cabinet designs.
Air pattern Downflow units discharge air into the raised floor plenum eliminating the
need for air distributing ductwork. This enables the owner to locate the unit
where space is available or relocate the unit as the room changes or expands.
These units are suitable for areas with raised floors greater than 12" (305
mm) high. Air is drawn in through the top of the unit. Downflow units also
include a static regain duct which increases performance and efficiency while
reducing noise level.
Upflow units discharge air into either a plenum or ductwork. These units are
suitable for areas with raised floors less than 12" (300 mm) high. Air is drawn
in through the front on the standard design or optionally from the rear of the
unit.
Control The microprocessor controller provides advanced integrated system
operation and management ensuring simple, reliable and precise temperature
and humidity control.
APC NetworkAIR AFX Series: Overview 3
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.
Wat er-c ooled. 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 from the unit is required.
Glycol-cooled. Unit used with a drycooler. The need for field refrigeration
piping is eliminated by a factory sealed and tested system. The glycol piping
is sealed, eliminating costly water treatment often encountered with open
cooling towers.
Remote-condensing. Unit used with a remote air-cooled condensing unit
which includes the compressor(s). This allows key maintenance procedures
to be located outside the critical environment helping eliminate access by
maintenance personnel in high security areas.
Front access The AFX Series has full service front access for routine servicing of
components. Front access also narrows the footprint of the unit making it
possible for units to be placed side by side.
Humidity control Humidity is managed through a self-contained steam canister humidifier for
maximum efficiency and ease of maintenance. Dehumidification control is
assured with a split evaporator coil which decreases the humidity level
without over-cooling the space, therefore reducing the need for electric
reheat.
Compliance The AFX Series has received agency approvals by ETL and MEA #223-99-E.
Electrical systems comply with NEC and UL 1995 standards.
4 APC NetworkAIR AFX Series: Overview
Model Selection
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APC NetworkAIR AFX Series: Model Selection 5
Standard Features
Microprocessor controller
The microprocessor controller provides state of the art control for a wide
variety of environmental applications including the demanding requirements
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
the program. Within the configuration menu the operator will find numerous
selections allowing the AFX to be tailored to meet specific requirements.
Sta tus. Complete status monitoring is provided within the status menu of the
microprocessor controller.
Available information includes:
• Current temperature • Cooling status
• Current humidity • Heating status
• Temperature setpoint • Humidification status
• Humidity setpoint • Dehumidification status
Alarms. Quick access to any alarm condition is facilitated through the menu
structure. The alarm key acts as a hot key, providing immediate access to the
alarm display menu. Presence of a new alarm will sound the audible alarm.
The red alarm LED on the display panel will remain illuminated until all
alarms have been cleared. The temperature and humidity alarm setpoints are
adjustable.
Alarm annunciations include:
• Loss of airflow • High temperature
• Clogged filter • Low temperature
• High head pressure • High humidity
• Low suction pressure • Low humidity
Setpoints. The microprocessor is provided with independent setpoints for:
• Heating • Humidification
• Cooling • Dehumidification
Automatic setpoint crossover protection will prevent the setting of the heat
setpoint above the cool setpoint and the humidify setpoint above the
dehumidify setpoint. Setpoint adjustment can be restricted to only operators
with knowledge of the security codes set within the security menu structure.
Configuration. Flexibility is offered through the use of the configuration
menu. Operating requirements are satisfied by changing the configuration
settings. New configurations are stored in EEPROM and protected from
unauthorized tampering by the four-digit security password, selected in the
security menu.
APC NetworkAIR AFX Series: Standard Features 7
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
feature allows for remote enunciation of alarm status.
Run times. The major components within the unit (motor, humidifier, and
compressor) have independent run timers that monitor and store accumulated
run hours on the components. The run timers are provided with operator
adjustable run time alarms.
Security. Multiple security levels prevent unauthorized adjustment of
important system parameters. The user may select a four-digit password for
setpoint and configuration changes. Should the password be forgotten, APC
can provide temporary access.
Monitoring. With the addition of a network communications card the
microprocessor may interface with the locally installed APC remote
monitoring and control system. Gateways are available for interfacing with
building management systems. Please check with APC for compatibility with
your building management system.
Cool inhibit. Prevents the unit from over-cooling during the
dehumidification cycle. If the space temperature falls below a user adjustable
setpoint, cooling will become inhibited until the space temperature returns to
setpoint.
Cool override. A manual toggle switch will allow one compressor operation
in the event of a microprocessor failure. The cool override can be field wired
to a snap acting thermostat for cooling control.
Remote shutdown. Events external to the unit, such as activation of a fire
suppression system may require the unit to shut down remotely. Additionally
this feature may be tied into a BMS that would allow remote control of the
units on/off status.
Remote relay shutdown. Remote shutdown of the NetworkAIR system
can be done by a factory installed relay. The relay can be ordered with a 24,
120, or 240 volt coil. The relay must be powered by others to disable the
NetworkAIR system.
Overall cabinet The frame is constructed of heavy gauge steel for maximum strength. Steel
access panels are insulated for quieter operation. The unit has been designed
for full service access from the front. The flush mounted panels are
removable using convenient quarter-turn fasteners. The access doors for the
electronic controller and electrical panel can be opened without interrupting
the operation of the unit.
8 APC NetworkAIR AFX Series: Standard Features
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
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.
hours. Permanently
10
Electrical panel The electrical panel contains the contactors, starters, overload protection
devices, and input power circuit breakers. Each wire (except jumpers) is
numbered every 3" (80 mm), or color coded to facilitate circuit tracing when
installing and servicing the unit. Each AC power circuit is individually
circuit-braker protected on all three phases. All compressor and motor
devices are thermally and short circuit protected. The electrical panel is
easily accessible from the front of the unit, and its modular construction
allows access to major components within the unit cabinet. An emergency
cool override switch can be manually activated to initiate cooling and a field
wired thermostat can be utilized to control cooling operation. All electrical
components are UL-listed and-recognized and all wiring conforms to NFPA
70 (NEC) and UL 1995 requirements.
Humidifier The humidifier utilizes a pure steam generator specifically designed for hi-
tech area environmental control. The pure steam eliminates contaminating
mineral deposits, potentially deadly bacteria, white dust and excessive
humidity. The humidifier requires little or no scheduled maintenance.
Automatic flushing combined with an indicator that signals when the canister
is to be changed, ensure maintenance free operation.
Electric reheat A three-phase electrical resistance heater sized to offset the sensible cooling
capacity in the dehumidification mode is incorporated in each AFX series
unit. The reheat elements are low watt density sheathed components. The
reheat is three phase to provide even phase loading. Reheat elements are
electrically and thermally protected.
Refrigeration system and compressor
The refrigeration system operates under an automatic microprocessor
controller for greater efficiency and accuracy. The heavy-duty compressors
are designed for year-round operation with a 15-year life expectancy. The
performance of the refrigeration system is enhanced by use of Scroll
Compressor Technology. Scroll compressors offer many advantages over
older technology semi-hermetic compressors. Vibration in the system is
greatly reduced by elimination of the reciprocating masses found in the semihermetic compressor. Risk of refrigeration leaks at compressor gaskets are
eliminated with the scroll compressors fully welded hermetic shell. The
design of the scroll is more tolerant to liquid flood back than the traditional
reciprocating compressor. Power consumption at full load is greatly reduced
with higher EER’s of the scroll. In addition reliability is enhanced due to the
fewer moving parts required using scroll technology. The end result is a
refrigeration system that offers the user optimized performance, efficiency
and reliability.
APC NetworkAIR AFX Series: Standard Features 9
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 in a lower coil
surface temperature. This reduction of the coil temperature decreases the
sensible heat ratio of the coil allowing a greater percentage of moisture
removal. Additionally the warmer air leaving the inactive circuits of the
evaporator coil blends with the near saturated air from the active circuits
raising the dry bulb temperature of the blended air well above saturation.
Condenser Water-and glycol-cooled systems employ a brazed plate condenser that uses
the latest heat transfer technology. Type 316L stainless plates are brazed
together in a vacuum furnace and comply with ASME pressure vessel code.
Pressure rating is 450 psi (3100 kPa).
Air filter The filtration of conditioned air is extremely vital to maintaining the clean,
particle-free environment required by electrical equipment. The AFX Series
uses 30% efficient (ASHRAE 52.1–92), 4" (102 mm) deep filters, with full
depth filter pleats. In addition to high filtration properties, these filters
produce a lower pressure drop than standard filters so less energy is required
during normal operation. Filters are easily replaced from the top on
downflow units and from the front on upflow units.
Water-regulating valves
The water-and glycol-cooled systems maintain proper performance by
sensing refrigerant discharge pressure and regulating the amount of water or
glycol supplied to the condenser. Two-way and three-way valves are
available. The standard valve pressure rating is 150 psi (1030 kPa).
Airflow sensor The air proving switch is continuously monitored by the microprocessor.
Upon detection of a loss of air flow the microprocessor will deactivate:
cooling, heating, humidification and dehumidification. After the air flow has
been restored for a predetermined period of time the microprocessor will
reactivate the functions as needed.
Clogged filter alarm An adjustable air pressure differently switch senses the pressure drop across
the filters. Upon sensing an excessive pressure drop, the switch activates the
alarm circuit of the microprocessor and displays a clogged filter message
simultaneously with an audible signal.
10 APC NetworkAIR AFX Series: Standard Features
Emergency drain pan
Systems are provided with two drain pans. The primary stainless steel
condensate drain pan lies directly under the cooling coil. A secondary
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 connections. A secondary drain pan is
not provided on bottom return or precool units.
APC NetworkAIR AFX Series: Standard Features 11
Optional Features
The following optional features are available on the AFX Series unless
otherwise noted. Certain combinations of options may not be available.
Emergency/ environmental
External components
Smoke detector(s). The factory installed smoke detector(s) is designed to
sense smoke concentration in the return air stream. Upon detecting smoke
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 installation in the air stream. If the return
air temperature reaches 125° F (52° C), the air conditioner will be turned off
and both an audible and visual alarm will be activated on the microprocessor.
Water detector(s). The solid-state water detector(s) activates an audible
and visual alarm on the microprocessor when moisture is detected. The water
detector is provided with 15' (5 m) of wire. Multiple detectors can be used in
the optional secondary drain pan in the sub floor.
Essential/non-essential lockout. When facilities have limited backup
power capacity, this lockout prevents the operation of electrical loads that are
not essential for continued site operation.
Floorstand. The heavy gauge floorstand raises the unit above the subfloor to
match the height of the raised floor. Heights are available from 6" to 36" (12"
to 36" for downflow units) in 3" increments and are adjustable +/- 1.5".
Adjustment is provided by threaded pedestals. Vibration absorbing pads are
included. The floorstand, pedestal and pads ship loose. Floorstands are
available for seismic applications.
Air deflector. An air deflector ships loose and attaches to the floorstand for
changing air direction from vertical to horizontal.
Plenum. The discharge plenum mounts on top of the upflow unit to direct
and distribute conditioned air. Manually adjustable, double deflecting grilles
are provided on 3 or 4 sides.Plenum shall be painted to match the color of the
unit.
Duct flange. A 1" (25 mm) duct flange is installed on a unit to provide
convenient connection to external ductwork. The duct flange can be installed
at the air outlet on upflow units, or at the air inlet on downflow units.
APC NetworkAIR AFX Series: Optional Features 13
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 firestat)
• Smoke Detector Alarm (with addition of optional smoke detector)
• Humidifier Change Canister Alarm
• Water Underfloor Alarm (with addition of water detector)
• Additional Common Alarm
Redundant group control. Allows up to six NetworkAIR units the ability
to communicate with each other to automatically switch upon alarm
condition, or timed rotation. Can also allow standby units the ability to assist
the running system.
Remote display panel. The microprocessor controller allows facility or
building-maintenance personnel to evaluate and control the unit from up to
50 ft. away from the unit, without having to enter the secured space.
Remote sensor(s). Environmental sensors can be strategically placed, up to
50 ft. from the unit to better meet the site’s cooling needs. The sensor must be
positioned to permit air movement across the sensors.
Monitoring system. A PC-based monitoring application which provides
single terminal monitoring and control for up to 120 units. The Windowsbased operated program (except Windows NT) has status screens for
individual unit conditions, mode of operation and alarms. The system
graphically presents temperature and relative humidity over time.
Temperature, relative humidity, alarm history, and other readings are stored
for future use.
Environmental monitoring unit. A stand-alone unit which performs
continuous temperature and humidity sensing through two available probes
(one included) and contact monitoring. The unit is controlled by available
web, control console, or SNMP interface with network connection. In the
event of an environmental anomaly, notification is sent to the customer via email or SNMP. The unit is 18.25" × 9" × 2.75" (464 mm × 229 mm × 70 mm)
and sits in or on top of a rack. The probes extend up to 12' (3.66 m) from the
unit.
14 APC NetworkAIR AFX Series: Optional Features
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 system is in the
dehumidification mode. The coil is controlled by the microprocessor through
a factory-piped-and-wired three-way heat reclaim regulator and check valve
(water/glycol only).
System Components Premium efficiency motor(s). High efficiency motors conserve energy
over periods of continuous fan operation.
High efficiency filter(s). Pleated final filters with an efficiency of 40% and
60% (ASHRAE 52.2), 4" (102 mm) deep, allow the removal of a greater
percentage of airborne particulate contaminates.
Prefilter(s). Intended to capture large airborne particulate contaminates,
thereby extending the life of the high-efficiency filter. Prefilters are 1" (25
mm) deep and easily disposable.
Condensate pump. The factory installed and wired condensate pump will
pump 36 gal/h (0.06 L/s) at 15 ft. (4.6 m) head.
High pressure water regulating valve(s). Water and glycol systems may
utilize an optional regulating valve, which operates with a maximum pressure
of 350 psi (2400 kPa), to automatically control condensing temperature.
Flared filter-drier connection. Flared threaded connections can be
provided on either side of the filter drier to expedite replacement.
Hot gas bypass. An auxiliary side-port hot gas bypass circuit. The
activation of the hot gas bypass circuit will maintain the evaporator coil
temperature during low load conditions. This optional feature will offer
longer compressor run times and minimize compressor cycling and
temperature fluctuations.
Pressure gauges. Suction and discharge pressure gauges may be provided
for the convenience of service personnel.
APC NetworkAIR AFX Series: Optional Features 15
Performance Specifications
Net cooling capacity—air/remote condensing
80° F DB, 67° F WB Total (BTUH) 78,100 111,000 132,800 147,200 158,000 226,900 267,300 296,800 329,600
CAPACITY IN BTU/H 6T 8T 10T 12T 14T 18T 20T 26T 28T
(26.7° C DB, 19.4° C WB) (kW) (22.9) (32.5) (38.9) (43.1) (46.3) (66.4) (78.3) (86.9) (96.5)
50% RH Sensible (BTUH) 72,500 89,000 125,200 134,200 151,700 184,600 239,800 258,100 283,300
(kW) (21.2) (26.1) (36.7) (39.3) (44.4) (54.1) (70.2) (75.6) (83.0)
75° F DB, 62.5° F WB Total (BTUH) 72,800 103,100 123,300 136,300 148,900 210,300 248,700 279,200 305,000
(23.9° C DB, 16.9° C WB) (kW) (21.3) (30.2) (36.1) (39.9) (43.6) (61.6) (72.8) (81.8) (89.3)
50% RH Sensible (BTUH) 70,900 88,000 122,400 131,800 148,900 181,600 237,300 256,300 277,900
(kW) (20.8) (25.8) (35.8) (38.6) (43.6) (53.2) (69.5) (75.0) (81.4)
75° F DB, 61° F WB Total (BTUH) 73,100 101,700 124,500 137,000 149,000 205,500 251,500 281,100 308,200
(23.9° C DB, 16.1° C WB) (kW) (21.4) (29.8) (36.5) (40.1) (43.6) (60.2) (73.6) (82.3) (90.2)
45% RH Sensible (BTUH) 73,100 95,000 124,500 137,000 149,000 195,600 251,500 281,100 308,200
(kW) (21.4) (27.8) (36.5) (40.1) (43.6) (57.3) (73.6) (82.3) (90.2)
72° F DB, 60° F WB Total (BTUH) 69,700 98,800 119,400 130,300 143,000 201,500 238,800 269,400 292,700
(22.2° C DB, 15.5° C WB) (kW) (20.4) (28.9) (35.0) (38.2) (41.9) (59.0) (69.9) (78.9) (85.7)
50% RH Sensible (BTUH) 68,700 86,000 119,400 127,800 143,000 177,700 231,200 251,400 272,700
(kW) (20.1) (25.2) (35.0) (37.4) (41.9) (52.0) (67.7) (73.6) (79.8)
72° F DB, 58.6° F WB Total (BTUH) 70,200 97,600 119,500 131,700 143,000 197,500 242,200 271,900 296,500
(22.2° C DB, 14.8° C WB) (kW) (20.6) (28.6) (35.0) (38.6) (41.9) (57.8) (70.9) (79.6) (86.8)
45% RH Sensible (BTUH) 70,200 92,500 119,500 131,700 143,000 191,100 242,200 271,900 296,500
(kW) (20.6) (27.1) (35.0) (38.6) (41.9) (56.0) (70.9) (79.6) (86.8)
70° F DB, 58.5° F WB Total (BTUH) 67,600 96,000 116,100 126,800 139,100 196,000 232,400 262,600 284,300
(21.1° C DB, 14.8° C WB) (kW) (19.8) (28.1) (34.0) (37.1) (40.7) (57.4) (68.0) (76.9) (83.2)
50% RH Sensible (BTUH) 66,900 84,400 116,100 125,300 139,100 174,400 226,300 246,800 266,200
(kW) (19.6) (24.7) (34.0) (36.7) (40.7) (51.1) (66.3) (72.3) (78.0)
70° F DB, 57.2° F WB Total (BTUH) 68,100 95,000 116,000 128,100 139,100 192,200 236,000 265,700 288,400
(21.1 C° DB, 14.0 C° WB) (kW) (19.9) (27.8) (34.0) (37.5) (40.7) (56.3) (69.1) (77.8) (84.4)
45% RH Sensible (BTUH) 68,100 90,400 116,000 128,100 139,100 186,700 236,000 265,700 288,400
(kW) (19.9) (26.5) (34.0) (37.5) (40.7) (54.7) (69.1) (77.8) (84.4)
MODEL
*Performance Specifications @ 95° F Ambient (AIR/GLYCOL/RC) or @ 105° F Condensing (WATER)
APC NetworkAIR AFX Series: Performance Specifications 17
Net cooling capacity—water
MODEL
CAPACITY IN BTU/H 6T 8T 10T 12T 14T 18T 20T 26T 28T
80° F DB, 67° F WB Total (BTUH) 85,500 121,000 144,600 160,700 171,300 246,200 298,500 340,000 361,500
(26.7°C DB, 19.4° C WB) (kW) (25.0) (35.4) (42.3) (47.1) (50.2) (72.1) (87.4) (99.6) (105.9)
50% RH Sensible (BTUH) 76,100 93,500 130,000 139,500 157,900 193,300 252,900 276,500 295,900
(kW) (22.3) (27.4) (38.1) (40.8) (46.2) (56.6) (74.1) (81.0) (86.6)
75° F DB, 62.5° F WB Total (BTUH) 79,100 111,800 133,100 147,800 158,000 226,800 283,500 312,100 332,400
(26.7° C DB, 19.4° C WB) (kW) (23.2) (32.7) (39.0) (43.3) (46.3) (66.4) (83.0) (91.4) (97.3)
50% RH Sensible (BTUH) 74,300 92,200 127,200 137,300 154,000 189,500 222,800 271,500 290,600
(kW) (21.8) (27.0) (37.2) (40.2) (45.1) (55.5) (65.2) (79.5) (85.1)
75° F DB, 61° F WB Total (BTUH) 73,557 110,000 125,928 147,800 152,460 222,000 281,200 304,600 324,400
(23.9° C DB, 16.1° C WB) (kW) (21.5) (32.2) (36.9) (43.3) (44.6) (65.0) (82.3) (89.2) (95.0)
45% H Sensible (BTUH) 73,557 99,600 125,928 147,800 152,460 203,800 228,700 293,100 312,400
(kW) (21.5) (29.2) (36.9) (43.3) (44.6) (59.7) (67.0) (85.8) (91.5)
72° F DB, 60° F WB Total (BTUH) 75,500 106,900 127,000 141,100 151,100 216,700 263,000 297,900 317,100
(22.2° C DB, 15.5° C WB) (kW) (22.1) (31.3) (37.2) (41.3) (44.2) (63.5) (77.0) (87.2) (92.9)
50% RH Sensible (BTUH) 72,300 90,100 123,600 133,900 149,800 185,300 242,800 265,900 283,400
(kW) (21.2) (26.4) (36.2) (39.2) (43.9) (54.3) (71.1) (77.9) (83.0)
72° F DB, 58.6° F WB Total (BTUH) 71,577 105,400 122,364 132,561 148,302 212,500 264,600 291,000 310,300
(22.2° C DB, 14.8° C WB) (kW) (21.0) (30.9) (35.8) (38.8) (43.4) (62.2) (77.5) (85.2) (90.9)
45% RH Sensible (BTUH) 71,577 97,000 122,364 132,561 148,302 198,800 264,600 284,300 304,200
(kW) (21.0) (28.4) (35.8) (38.8) (43.4) (58.2) (77.5) (83.2) (89.1)
70° F DB, 58.5° F WB Total (BTUH) 73,300 103,800 123,200 136,700 148,800 210,300 255,300 288,700 307,400
(22.2° C DB, 14.8° C WB) (kW) (21.5) (30.4) (36.1) (40.0) (43.6) (61.6) (74.8) (84.5) (90.0)
50% RH Sensible (BTUH) 71,300 88,400 121,000 130,800 148,800 181,700 237,500 260,000 277,700
(kW) (20.9) (25.9) (35.4) (38.3) (43.6) (53.2) (69.5) (76.1) (81.3)
70° F DB, 57.2° F WB Total (BTUH) 70,587 102,400 119,790 129,492 148,600 206,400 257,400 282,500 301,400
(22.2° C DB, 14.8° C WB) (kW) (20.7) (30.0) (35.1) (37.9) (43.5) (60.4) (75.4) (82.7) (88.3)
45% RH Sensible (BTUH) 70,587 94,600 119,790 129,492 148,600 193,900 257,400 277,200 296,700
(kW) (20.7) (27.7) (35.1) (37.9) (43.5) (56.8) (75.4) (81.2) (86.9)
*Performance Specifications @ 95° F Ambient (AIR/GLYCOL/RC) or @ 105° F Condensing (WATER)
18 APC NetworkAIR AFX Series: Performance Specifications
Net cooling capacity—glycol
MODEL
CAPACITY IN BTU/H 6T 8T 10T 12T 14T 18T 20T 26T 28T
80° F DB, 67° F WB
(26.7°C DB, 19.4°C WB) (kW) (22.8) (32.4) (38.1) (42.7) (45.5) (65.9) (79.1) (86.8) (96.2)
50% RH Sensible (BTUH) 72,300 88,800 123,400 133,600 150,100 184,000 241,000 257,900 282,900
75° F DB, 62.5° F WB Total (BTUH) 71,900 102,000 121,600 133,900 145,800 206,800 256,400 274,400 302,100
(23.9°C DB, 16.9°C WB) (kW) (21.1) (29.9) (35.6) (39.2) (42.7) (60.6) (75.1) (80.3) (88.5)
50% RH Sensible (BTUH) 70,300 87,400 121,600 130,600 145,800 179,900 210,600 251,800 277,500
75° F DB, 61° F WB Total (BTUH) 69,597 100,600 121,600 129,294 145,700 201,700 254,400 278,700 305,200
(23.9°C DB, 16.1°C WB) (kW) (20.4) (29.5) (35.6) (37.9) (42.7) (59.1) (74.5) (81.6) (89.4)
45% RH Sensible (BTUH) 69,597 94,400 121,600 129,294 145,700 193,600 216,500 278,700 305,200
72° F DB, 60° F WB Total (BTUH) 69,000 97,300 116,100 127,500 139,300 197,200 237,700 266,400 285,400
(22.2°C DB, 15.5°C WB) (kW) (20.2) (28.5) (34.0) (37.3) (40.8) (57.7) (69.6) (78.0) (83.6)
50% RH Sensible (BTUH) 69,000 85,300 116,100 125,500 139,300 175,500 230,600 251,800 265,100
72° F DB, 58.6° F WB Total (BTUH) 68,310 96,200 116,100 124,245 139,300 193,000 241,600 268,600 292,500
(22.2°C DB, 14.8°C WB) (kW) (20.0) (28.2) (34.0) (36.4) (40.8) (56.5) (70.7) (78.6) (85.6)
45% RH Sensible (BTUH) 68,310 91,200 116,100 124,245 139,300 188,500 241,600 268,600 292,500
70° F DB, 58.5° F WB Total (BTUH) 66,900 94,400 112,500 125,200 135,100 191,100 230,600 259,300 278,600
(22.2°C DB, 14.8°C WB) (kW) (19.6) (27.6) (32.9) (36.7) (39.6) (56.0) (67.5) (75.9) (81.6)
50% RH Sensible (BTUH) 66,900 83,500 112,500 125,200 135,100 171,900 225,300 247,100 265,100
70° F DB, 57.2° F WB Total (BTUH) 66,900 93,300 112,500 125,100 135,000 187,300 234,600 261,900 284,100
(22.2°C DB, 14.8°C WB) (kW) (19.6) (27.3) (32.9) (36.6) (39.5) (54.8) (68.7) (76.7) (83.2)
45% RH Sensible (BTUH) 66,900 89,400 112,500 125,100 135,000 183,800 234,600 261,900 284,100
Total (BTUH) 77,700 110,700 130,200 145,800 155,300 225,100 270,000 296,400 328,700
(kW) (21.2) (26.0) (36.1) (39.1) (44.0) (53.9) (70.6) (75.5) (82.8)
(kW) (20.6) (25.6) (35.6) (38.2) (42.7) (52.7) (61.7) (73.7) (81.3)
(kW) (20.4) (27.6) (35.6) (37.9) (42.7) (56.7) (63.4) (81.6) (89.4)
(kW) (20.2) (25.0) (34.0) (36.7) (40.8) (51.4) (67.5) (73.7) (77.6)
(kW) (20.0) (26.7) (34.0) (36.4) (40.8) (55.2) (70.7) (78.6) (85.6)
(kW) (19.6) (24.4) (32.9) (36.7) (39.6) (50.3) (66.0) (72.4) (77.6)
(kW) (19.6) (26.2) (32.9) (36.6) (39.5) (53.8) (68.7) (76.7) (83.2)
*Performance Specifications @ 95° F Ambient (AIR/GLYCOL/RC) or @ 105° F Condensing (WATER)
APC NetworkAIR AFX Series: Performance Specifications 19
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