Screw Compressor

R
Form No: MES0446A
Products That Perform...By People Who Care
Screw Compressor
Air Cooled Flooded Chillers
AFHX Series
(High Ambient)
90 to 636 Tons
50Hz
TABLE OF CONTENT
DESCRIPTION
PAGE NO
Nomenclature.................................................................................................................................... 2
Advantages of Flooded Chiller............................................................................................................ 3
Unit Features .................................................................................................................................... 5
Operating Benefits............................................................................................................................. 8
Typical Sequence of Operation........................................................................................................... 9
Physical Data...................................................................................................................................10
Performance Data ............................................................................................................................12
Dimensional Data.............................................................................................................................14
Typical Wiring Schematic..................................................................................................................19
Sound Data......................................................................................................................................24
NOMENCLATURE
A F HX 110 T - 5 S R
Air Cooled Chiller
Blank = R22
R
= R134a
Flooded Evaporator
Horizontal Screw Compressor
Nominal Tons
Single Compressor = 90, 120, 140, 160,
180
Two Compressors = 90T, 110T, 125T,
160T, 190, 220,
250, 295, 315,
340, 375, 435,490
Three Compressors = 545, 595, 635
S
Q
= Standard
= Special
5
6
= 50Hz
= 60Hz
T
= Optional Two
Compressors
Blank = Standard
-2-
ADVANTAGES OF FLOODED CHILLER
In a flooded cooler the refrigerant surrounds
the tubes in the shell and the water to be
cooled flows through the tubes. The level of
liquid refrigerant in the shell is maintained by
the combined action of an electronic level
controller and a mod-motor actuated ball valve
which modulates the subcooled
liquid
refrigerant into the cooler. This ensures that all
the cooler tubes are completely immersed in
the liquid refrigerant for better heat transfer
efficiency.
For a Direct Expansion (DX) cooler the
refrigerant is expanded into the tubes while the
chilled water is circulated through the shell.
Thermostatic expansion valve is used to
throttle the refrigerant in maintaining constant
superheat of suction gas to the compressor.
input curve over the same conditions. It can
be noted that the same compressor when
operating with a flooded cooler will generate
approximately 8% more cooling capacity
while kw input increases negligibly by about
1.8%. Therefore, the same compressor
when coupled to a flooded cooler will
typically achieved higher cooling capacity
performance with correspondingly higher
Energy Efficiency Ratio (EER) i.e. (Btu/watt)
or lower kw/Ton.
FIGURE 1
The following are the advantages of using
flooded chiller:
1. Higher Capacity and Higher EER
Achievable with the Same Compressor
The flooded cooler with all the copper tubes
immersed in the “boiling” liquid refrigerant
enables a small approach temperature
between the “boiling” liquid refrigerant
temperature in the shell and the outlet
chilled water temperature in the cooler tubes
to be achieved. This approach temperature
or temperature difference between the
evaporating temperature of the boiling liquid
refrigerant and the chilled water outlet
temperature, for a flooded cooler, is typically
less than 3°F.
On the contrary, for a DX or Direct
Expansion Cooler, the typical approach
temperature is between 8°F to 10°F. This
simply means that the same compressor in
a flooded cooler system will operate at a
higher saturated evaporating temperature
when compared to the same compressor in
a DX-Cooler system, when outlet chilled
water temperatures in both cases are set at
the same temperature.
Figure 1 shows the typical screw
compressor capacity performance curve at a
particular condensing temperature over
saturated evaporating temperature of
between 30°F to 50°F, and the typical power
-3-
A DX cooler uses TXV throttling to maintain
about 10 to 15°F suction superheat to
prevent liquid flood back to the compressor.
In a flooded cooler, the refrigerant boils off in
the shell and gas can be sucked out from
the top of cooler back to compressor. The
suction superheat is usually about 2 to 3°F.
Reduction in suction superheat will further
increase the capacity performance of the
compressor.
ADVANTAGES OF FLOODED CHILLER
DX coolers are typically designed with
higher tube velocities to ensure proper oil
return to compressor both at full load and at
reduced load. This will contribute to higher
refrigerant pressure drop through the cooler.
On the contrary, there is very little shell side
pressure losses for a flooded cooler.
Therefore, lower suction pressure drop in
the flooded design will impose less capacity
penalty on the compressor and this will
further enable the compressor in a flooded
cooler to generate more capacity than one
with a DX Cooler.
2. Better Part Load Performance
The Dunham-Bush Air Cooled Flooded
Chiller with its sophisticated microcomputer
control and patented oil management
system has all cooler tubes completely
immersed in the “boiling” liquid refrigerant to
achieve superior heat transfer efficiency
while ensuring adequate oil return to the
compressor(s). This ensures superior fullload efficiency and even better part-load
efficiency as the full heat transfer surface
areas of the cooler tubes are utilized even at
part-load conditions. On the contrary, in the
Direct Expansion Cooler, because of the
need to maintain adequate refrigerant gas
velocities in the cooler tubes for proper oil
return, it is typical for certain bundle of
cooler tubes to be “blocked” or “baffled off”
at part-load conditions. Thus not utilizing the
full heat transfer surface areas of the cooler
tubes and therefore have a lower efficiency
when compared with a flooded cooler chiller
at part-load conditions.
3. Excellent Capacity Modulation in
Response to Building Loads
Dunham-Bush utilizes its state-of-the-art
NC25-4
microcomputer
controller
in
combination with the electronic level
controller and mod-motor actuated ball valve
to ensure instantaneous and precise feeding
of liquid refrigerant to the flooded cooler in
response to changes in building demand;
-4-
and maintains precise (±1/2°F) preset outlet
chilled water temperatures even at very low
load conditions; whereas most of DunhamBush’s competitors, in screw chillers, still
utilizes the conventional “centrifugal chiller”
method of using orifice plates to modulate
refrigerant feed to the cooler; and as such
their machines do not function efficiently at
low-load conditions and can encounter oil
return problem!
4. Cleanable Cooler
For a single pass cooler, the end plates at
both ends of the water boxes (2 pass only at
return end) can be removed easily without
dismantling the chilled water piping
connections, for inspection and for
mechanical tubes cleaning with brushes or
auto-brush. This will enable low tube fouling
factor in the cooler to be ensured, thus
maintaining system efficiency.
5. Lower Water Side Pressure Drop
In a DX cooler, the water flows transversely
over the outside of the tubes. The water flow
is guided with vertical baffles. This will have
a higher-pressure drop as compared with
the water flow in the tubes of a flooded
cooler. In other words, the equivalent
flooded chiller will require smaller water
pump to operate at lower power
consumption.
6. Commonly Used In Large Tonnage
Chillers Where Efficiency Is Critical
As a general rule, DX-cooler are typically
used in small and medium tonnage chillers
where efficiency is not important and the low
initial cost is the main consideration!
However, with increasing energy cost and
the drive to reduce global warming,
flooded cooler chillers will increasingly
become more popular not only in the
large tonnage but also in the small and
medium tonnage chillers. Dunham-Bush,
again, leads the industry in this respect!
UNIT FEATURES
Microcomputer Control
]
Advanced Microcomputer control is a standard
feature for all Dunham-Bush rotary screw air
cooled chillers monitoring analog and digital
inputs to achieve precise control of the major
operational and protective functions of the unit.
Optional entering chilled water temperature is
available. With this option the operator can
quickly and accurately read all significant water
temperatures and eliminate the need for ofteninaccurate thermometers.
External start/ stop command status.
Direct Digital Control (DDC) allows fingertip
user interaction. Its simple-to-use push button
keyboard and menu-driven software provide
access to operating conditions, control
setpoints and alarm history clearly displayed on
a
prominent
multi-line
80
character
alphanumeric display.
An easy-to-install, inexpensive modem option
allows remote reading of operating parameter
updates. The Dunham-Bush microcomputer
insures its owner state-of-the-art efficiency and
reliability.
Display Information
The 80 character alphanumeric liquid crystal
display utilizes easy to understand menu-driven
software. Inexperienced operators can quickly
work through these menus to obtain the
information they require or to modify control
parameters. More experienced operators can
bypass the menu systems, if desired, and
move directly to their requested control
function. At all times, assistance is available to
the operator by simply pressing the help key.
Easily accessible measurements include:
]
Leaving chilled water temperature.
] Evaporator pressure.
] Condenser pressure.
Capacity Control
]
System voltage.
] Compressor
amp
compressor.
draw
of
each
]
Compressor elapsed run time of each
compressor.
] Compressor starts status.
]
Oil level switch status.
] Water temperature reset value.
]
Water flow switch status.
-5-
Leaving chilled water temperature control is
accomplished
by
entering
the
water
temperature setpoint
and
placing
the
microcomputer in automatic control. The unit
will monitor all control functions and move the
slide valve to the required operating position.
The compressor ramp (loading) cycle is
programmable and may be set for specific
building requirements. Remote adjustment of
the leaving chilled water setpoint is
UNIT FEATURES
accomplished through either direct connection
of other DB control packages to the
microcomputer through either the RS485 long
distance differential communications port, via
terminal or modem connected to the RS232
communication port, or from an external
Building Automation System supplying a simple
0 to 5VDC signal. Remote reset of compressor
current limit may be accomplished in a similar
fashion.
System Control
The unit may be started or stopped manually,
or through the use of an external signal from a
Building Automation System. In addition, the
microcomputer may be programmed with
seven-day operating cycle or other DB control
packages may start and stop the system
through inter-connecting wiring.
System Protection
communications port and all hardware or
software necessary for remote monitoring and
controlled from a simple terminal and optional
phone modem. This sophisticated feature
makes servicing easier and more convenient to
the system. The microcomputer as standard is
additionally equipped with history files which
may be used to take logs which may be
retrieved via the phone modem periodically.
Now owners of multiple buildings have a simple
and inexpensive method of investigating
potential problems quickly and in a highly cost
effective manner. Dunham-Bush has an open
protocol on its microcomputer to allow direct
interface with Building Management Systems.
Refrigerating Cycle
The refrigerant management system, is very
similar to centrifugal water chillers and is
shown in the refrigerant cycle diagram below.
Liquid refrigerant enters the flooded evaporator
uniformly where it absorbs heat from water
flowing through the evaporator tubes. The
vaporized refrigerant is then drawn into the
suction port of the compressor where the
compression begins.
The following system protection controls will
automatically act to insure system reliability:
] Low suction pressure
] High discharge pressure
] Freeze protection
] Low differential pressure
] Low oil level
] Compressor run error
] Power loss
] Chilled water flow loss
] Sensor error
] Compressor over current
] Anti-recycle
This partially compressed gas is then joined by
additional gas from the flash economizer as the
rotors rotate past the vapor injection port at an
intermediate pressure. Compressed gaseous
refrigerant is then discharged into the integral
oil separator where oil, which is contained in
the refrigerant vapor, is removed and returned
to the oil sump.
The microcomputer will retain the latest eight
alarm conditions complete with time of failure in
an alarm history. This tool will aid service
technicians in troubleshooting tasks enabling
downtime and nuisance trip-outs to be
minimized.
Remote Monitoring
Fully compressed and superheated refrigerant
is then discharged into the condenser, where
air is being drawn through the condenser tube
by the propeller fan cools and condenses the
refrigerant. Liquid refrigerant then passes
through the first expansion device and into the
flash economizer where flash gas and liquid
refrigerant are separated.
The gaseous refrigerant is then drawn out of
the flash economizer and into the vapor
The microcomputer is complete with an RS232
-6-
UNIT FEATURES
injection port of the compressor. The remaining
liquid refrigerant then passes through a second
expansion device which reduces refrigerant
pressure to evaporator levels where it is then
distributed evenly into the evaporator.
By removing the flash gas from the flash
economizer at an intermediate pressure, the
enthalpy of the refrigerant flowing into the
evaporator is reduced. This increases the
refrigeration effect and improves the efficiency
of the refrigeration cycle.
Refrigerant flow into and out of the flash
economizer is controlled by modulating valves
which eliminate the energy wasting hot gas
bypass effect inherent with fixed orifices.
Part-Load Performance
Through the use of flash economizer
modulating
flow
control
and
multiple
compressors, Dunham-Bush air-cooled chillers
-7-
have
best
part-load
performance
characteristics in the industry when measured
in accordance with ARI Standard 550/590-98.
In most cases, actual building system loads are
significantly less than full load design
conditions, therefore chillers operate at part
load most of the time.
Dunham-Bush air-cooled chillers combine the
efficient operation of multiple compressors with
an economizer cycle and microprocessor
control to yield the best total energy efficiency
and significant operating saving under any
load.
When specifying air conditioning equipment, it
is important to consider the system load
characteristics for the building application. In a
typical city, the air conditioning load will vary
according to changes in the ambient
temperature. Weather data compiled over
many years will predict the number of hours
that equipment will operate at various load
percentages.
OPERATING BENEFITS
Efficiency and Reliability
] ASHRAE
Standard 15 Safety Code for
Mechanical Refrigeration.
] IEEE.
ENERGY EFFICIENCY
] Designed to provide the greatest amount of
REFRIGERANT COMPATIBILITY
cooling for the least kilowatt input over the
entire operating range of your building.
] Designed to operate with environmentally
] Delivers
outstanding efficiency and total
energy savings through the utilization of
economizer cycle and microcomputercontrolled
staging
producing
greater
capacity with fewer compressors.
safe and economically smart HCFC-22 with
proven efficiency and reliability.
] Consult
Factory for use of other HFC
refrigerants.
] Maximized performance through computer-
matched
components
and
multiple
compressors on a single refrigerant circuit.
CONTROL FLEXIBILITY
] Microcomputer-based
with DDC (direct
digital control) features precise push button
control over every aspect of operation with
built-in standard features that allow extra
energy savings on start-up and throughout
the life of your equipment.
] High
efficiency oil recovery system
guarantees removal of oil carried over in the
refrigerant
and
maintains
the
heat
exchangers at their maximum efficiency at
both full and part load.
] Insured uniform compressor loading and
optimal
energy
efficiency
through
microcomputer
controls
which
utilize
pressure transducers to measure evaporator
and condenser pressure.
INSTALLATION EASE
] Dramatic payback in reduced maintenance
and overhaul costs both in down time and in
labor expenditures.
] Ease
of
troubleshooting
microprocessor retention of
functions.
] Lower energy costs resulting from automatic
through
monitored
load monitoring and increased accuracy and
efficiency in compressor staging.
] Monitor your chiller's key functions from a
] Factory run tested.
remote location with a simple, low cost,
phone modem option.
] Proactive
control by microcomputer that
anticipates problems and takes corrective
action before they occur. Controls will
unload compressor(s) if head or suction
pressure approach limits. This will enable
unit to stay on the line while warning
operator of potential problems.
SAFETY CODE
] ASME Boiler and Pressure Vessel Code,
Section VIII Division 1 "Unfired Pressure
Vessels".
] JKKP Code.
] ASME Standard B31.5 Refrigeration Piping.
-8-
TYPICAL SEQUENCE OF OPERATION
The Dunham-Bush air-cooled water chiller
depends mainly on its on-board microcomputer
for control. Operation described is for a twocompressor units and is very similar for single,
four-compressor units.
and hold leaving chilled water temperature at
setpoint.
If the applied load is greater than one
compressor can handle, it will load fully and
then the microcomputer will call for a second
compressor. After one minute, the second
compressor will start in the same manner as
the first. Then both compressors will be
commanded to adjust load to 50%. They are
gradually loaded up together until the applied
load is satisfied. In this way the two
compressors share the load equally.
For initial start-up, the following conditions must
be met:
] Power supply to unit energized.
] Unit circuit breakers in the "on" position.
] Control power switch on for at least 15
minutes. Compressor switches on.
] Reset pressed on microcomputer keypad.
If the applied load decreases to the point that
both compressors are running at about 40%
capacity, the computer shuts down the lag
compressor
and
loads
the
remaining
compressor to about 80%. If applied load
decreases further, the remaining compressor
unloads proportionately. If applied load
decreases to less than the minimum capacity of
one compressor, the leaving chilled water
temperature will decline to 2°F below setpoint,
at which time the lead compressor will shut
down. It will restart automatically if leaving
chilled water temperature rises to 2°F above
setpoint and both 15 minute anti-recycle and
one minute start delay timers are satisfied.
] Chilled water pump running and chilled
water flow switch made.
] Leaving chilled water temperature at least
2°F above setpoint.
] All safety conditions satisfied.
After all above conditions are met, the
microcomputer will call for the lead compressor
to start. The compressor 15-minute anti-recycle
timer is initiated at compressor start.
The microcomputer monitors compressor
amps, volts, leaving water temperature and
suction and discharge pressures. The
compressor and cooling capacity is controlled
by pulsed signals to load and unload solenoid
valves on the compressor. When the
compressor starts, it is fully unloaded, yielding
about 25% of its full load capacity. As the
computer gives it load signals, capacity
gradually increases. The rate of compressor
loading is governed by ramp control which is
adjustable in the computer.
During start-up operation, the computer
monitors the difference between discharge and
suction pressures to ensure that minimum of 30
psi differential is available for compressor
lubrication. If the difference falls below a
minimum of 30psi, the computer closes
refrigerant flow control valves, starving the
evaporator, causing evaporator pressure to
drop, increasing differential pressure. This is
especially helpful at startup, when warm chilled
water and low ambient temperature would
cause a low head situation. This feature is
called EPCAS: Evaporator Pressure Control at
Startup. It is one of several proactive control
features of the microcomputer which overcome
potential problems while continuing operation.
The computer responds to leaving chilled water
temperature and its rate of change which is
proportional and derivative control. If leaving
chilled water temperature is within the
deadband (+/-0.8°F from setpoint), no load or
unload commands are given. If chilled water
temperature is above deadband, the computer
will continue loading the compressor until a
satisfactory rate of decline is observed. If
leaving chilled water temperature is below the
deadband, the compressor is commanded to
unload. Thus the compressor capacity is
continuously modulated to match applied load
Two additional proactive features are low
suction and high discharge pressure override. If
operating pressures approach trip level,
compressors are unloaded as necessary to
continue operation.
-9-
PHYSICAL SPECIFICATIONS
MODEL AFHX
90-5
90T-5
120-5
110T-5
140-5
125T-5
160-5
160T-5
180-5
190-5
220-5
COMPRESSOR
MODEL (QTY)
HISC 1512 HISC 1309 HISC 1709 HISC 1311 HISC 1711 HISC 1311 HISC 1811 HISC 1509 HISC 1813 HISC 1512 HISC 1512
x1
x2
x1
x2
x1
x 1,
x1
x1
x1
x2
x 1,
HISC 1509
HISC 1512
HISC 1709
x1
x1
x1
RPM
NOMINAL CAPACITY
TR
MIN. % UNIT CAPACITY
REDUCTION
2950
2950
2950
2950
2950
2950
2950
2950
2950
2950
2950
90.0
90.0
120.0
110.0
140.0
125.0
160.0
160.0
180.0
190.0
220.0
25%
12.5%
25%
12.5%
25%
12.5%
25%
12.5%
25%
12.5%
12.5%
EVAPORATOR
MODEL (QTY)
WATER CONNECTOR
INCH
NOM. WATER FLOW / P D
GPM / FT IN WG
MIN/ MAX WATER FLOW
GPM
MIN/ MAX WATER PD
FT IN WG
B1(1)
B1(1)
C1(1)
C1(1)
D1(1)
D1(1)
D2(1)
D2(1)
D2(1)
B1(2)
C1(2)
5
5
5
5
6
6
6
6
6
6
6
216/9.92
216/9.92
288/10.8
264/9.2
336/8.7
300/7.1
384/9.0
384/9.0
432/11.2
456/11.8
528/10.38
74/372
74/372
96/480
96/480
125/577
125/577
140/703
140/703
140/703
148/743
193/958
1.5/26.5
1.5/26.5
1.5/27.0
1.5/27.0
1.5/23.1
1.5/23.1
1.5/27.0
1.5/27.0
1.5/27.0
1.6/28.8
1.7/30.9
CONDENSER
COIL ROWS DEEP/ TOTAL FA
(SQ.FT)
3/141.2
3/141.2
4/141.2
4/141.2
4/188.2
3/94.1,
4/94.1
4/188.2
4/188.2
3/235.3
3/282.3
3/282.3
6
6
6
6
8
8
8
8
8
12
12
800
800
800
800
800
800
800
800,860
860
800
800,860
MOTOR HP (QTY)
1.5(6)
1.5(6)
1.5(6)
1.5(6)
1.5(8)
1.5(8)
1.5(8)
15.(8)
1.5(8)
1.5(12)
1.5(12)
FLA, AMP (QTY)
3.2(6)
3.2(6)
3.2(6)
3.2(6)
3.2(8)
3.2(8)
3.2(8)
3.2(8)
3.2(8)
3.2(12)
3.2(12)
TOTAL CFM
77175
77175
72765
72765
98700
94710
94500
99960
101220
153405
157185
45
45
45
45
45
45
45
45
45
45
45
NO. OF FAN
FAN DIA.
MM
MIN. AMBIENT TEMP. (F) AT
MIN. LOAD
ELECTRICAL
NOM. VOLTAGE
415/3/50
415/3/50
415/3/50
415/3/50
415/3/50
415/3/50
415/3/50
415/3/50
415/3/50
415/3/50
415/3/50
UNIT RLA
A
152
84(2)
204
96(2)
233
96(1),
127(1)
272
127(1),
159(1)
304
151(1),
152(1)
151(1),
198(1)
UNIT MAX. INRUSH
A
171
205
223
254
259
291
298
351
330
414
459
GENERAL
UNIT LENGTH
INCH
149.5
149.5
149.5
149.5
191.5
191.5
191.5
191.5
210
275.5
275.5
UNIT WIDTH
INCH
88
88
88
88
88
88
88
88
88
88
88
UNIT HEIGHT
INCH
94
94
94
94
94
94
94
94
96
96
96
SHIPPING WEIGHT
LBS
8217
8637
9268
9647
10928
11290
11388
12077
12111
15661
16555
OPERATING WEIGHT
LBS
8313
8732
9391
9770
11088
11451
11568
12257
12291
15847
16795
199
199
265
243
309
276
354
354
398
420
486
OPERATING CHARGE R-22
LBS
- 10 -
PHYSICAL SPECIFICATIONS
MODEL AFHX
250-5
275-5
295-5
315-5
340-5
375-5
435-5
490-5
545-5
595-5
635-5
COMPRESSOR
MODEL (QTY)
HISC 1709 HISC 1709 HISC 1711 HISC 1711 HISC 1811 HISC 1813 HISC 1813 HISC 1816 HISC 1813 HISC 1813 HISC 1813
x2
x 1,
x2
x 1,
x2
x2
x 1,
x2
x3
x2,
x1
HISC 1711
HISC 1811
HISC 1816
HISC 1816 HISC 1816
x1
x1
x1
x1
x2
RPM
NOMINAL CAPACITY
TR
MIN. % UNIT CAPACITY
REDUCTION
2950
2950
2950
2950
2950
2950
2950
2950
2950
2950
2950
250.0
275.0
295.0
315.0
340.0
375.0
435.0
490.0
545.0
595.0
635.0
12.5%
12.5%
12.5%
12.5%
12.5%
12.5%
12.5%
12.5%
8.33%
8.33%
8.33%
EVAPORATOR
MODEL (QTY)
WATER CONNECTOR
INCH
NOM. WATER FLOW / PD
GPM / FT IN WG
MIN/ MAX WATER FLOW
GPM
MIN/ MAX WATER PD
FT IN WG.
D1(2)
D1(2)
D1(2)
D1(2)
D2(2)
E1(2)
K1(2)
K2(2)
V2(1)
V3(1)
V4(1)
8
8
8
8
8
8
8
8
12
12
12
552/6.5
660/8.93
708/10.1
756/11.4
816/10.9
900/9.2
1308/18.2
1428/19.8
1524/28.1
250/1127
250/1127
250/1127
250/1127
283/1408
352/1408
311/1392
341/1361.2
369/1849
386/1931
427/2135
1.6/23.6
1.6/23.6
1.6/23.6
1.6/23.6
1.6/29.4
1.7/20.9
2.1/31.1
2.1/25.7
1.9/34.0
1.9/34.0
2.9/51.6
1044/18.44 1176/19.7
CONDENSER
COIL ROWS DEEP/ TOTAL FA
(SQ.FT)
4/141.2,
3/141.2
4/141.2,
3/188.2
3/376.4
4/188.2,
3/188.2
4/376.4
4/188.2,
3/235.3
4/577.5
6/577.5
6/577.5
6/641.7
6/641.7
12
14
16
16
16
18
18
18
18
20
20
860
860,800
800
800
860,800
860
860
860
860
860
860
MOTOR HP (QTY)
1.5(12)
1.5(14)
1.5(16)
1.5(16)
1.5(16)
1.5(18)
1.5(18)
4.0(8),
3.0(10)
4.0(18)
4.0(20)
4.0(20)
FLA, AMP (QTY)
3.2(12)
3.2(14)
3.2(16)
3.2(16)
3.2(16)
3.2(18)
3.2(18)
7.1(8),
5.5(10)
7.1(18)
7.1(20)
7.1(20)
TOTAL CFM
159075
179760
201600
194460
195720
236145
256095
284130
297675
334530
330750
45
45
45
45
45
45
45
45
45
45
45
NO. OF FAN
FAN DIA.
MM
MIN. AMBIENT TEMP. (F) AT
MIN. LOAD
ELECTRICAL
NOM. VOLTAGE
415/3/50
415/3/50
415/3/50
415/3/50
415/3/50
415/3/50
415/3/50
415/3/50
415/3/50
415/3/50
415/3/50
UNIT RLA
A
198(2)
198(1),
231(1)
231(2)
231(1),
272(1)
274(1),
272(1)
297(1),
304(1)
298(1),
382(1)
387(1),
388(1)
301(3)
301(2),
388(1)
301(1),
406(2)
UNIT MAX. INRUSH
A
471
511
572
613
650
775
853
975
1143
1244
1367
GENERAL
UNIT LENGTH
INCH
275.5
317.5
359.5
359.5
359.5
401.5
401.5
401.5
414
456
456
UNIT WIDTH
INCH
88
88
88
88
88
88
88
88
88
88
88
UNIT HEIGHT
INCH
96
96
96
96
96
96
120
120
120
120
120
SHIPPING WEIGHT
LBS
17337
20198
20866
21329
21855
25475
29245
32661
35138
37751
38221
OPERATING WEIGHT
LBS
17689
20510
21179
21641
22207
25915
29719
33182
36378
39017
39453
553
608
652
696
751
829
961
1083
1204
1315
1403
OPERATING CHARGE R-22
LBS
- 11 -
PERFORMANCE DATA
LWT
o
F
40.0
42.0
44.0
AMBIENT TEMPERATURE, oF
MODEL
AFHX
85.0
95.0
105.0
115.0
125.0
TR
kW
TR
kW
TR
kW
TR
kW
TR
kW
90-5
90T-5
120-5
110T-5
140-5
125T-5
160-5
160T-5
180-5
190-5
220-5
250-5
275-5
295-5
315-5
340-5
375-5
435-5
490-5
545-5
595-5
635-5
90-5
90T-5
120-5
110T-5
140-5
125T-5
160-5
160T-5
180-5
190-5
220-5
250-5
275-5
295-5
315-5
340-5
375-5
435-5
490-5
545-5
595-5
635-5
86.7
86.6
113.8
107.2
134.9
122.6
155.4
153.2
174.1
183.9
214.6
242.0
265.9
286.5
307.2
331.9
363.1
423.7
475.3
530.2
576.0
616.9
90.1
90.1
118.4
111.5
140.3
127.5
161.6
159.4
181.1
191.3
223.2
251.7
276.6
298.0
319.5
345.2
377.7
440.7
494.3
551.5
599.2
641.7
87.5
91.6
115.4
107.4
130.6
117.4
156.8
155.0
171.8
168.2
195.9
224.4
237.4
256.7
282.0
307.6
338.0
385.0
435.3
504.9
553.0
618.7
88.0
92.1
116.1
108.1
131.3
118.1
157.7
155.8
172.8
169.1
197.1
225.7
238.8
258.2
283.6
309.4
340.1
387.2
438.0
508.0
556.2
622.3
82.0
82.0
107.7
101.5
127.6
116.0
147.0
145.0
164.7
174.3
203.3
229.4
252.0
271.5
291.0
314.5
344.2
401.5
450.5
501.7
545.0
583.7
85.4
85.4
112.2
105.7
132.9
120.8
153.1
151.0
171.6
181.5
211.7
238.8
262.3
282.7
303.0
327.5
358.3
418.0
469.0
522.5
567.6
608.0
97.4
102.0
128.5
119.6
145.4
130.6
174.6
172.5
191.3
187.1
218.0
249.7
264.3
285.8
313.9
342.4
376.3
428.7
484.7
562.3
615.9
689.1
98.0
102.7
129.2
120.3
146.3
131.4
175.6
173.6
192.4
188.2
219.2
251.1
265.8
287.4
315.6
344.3
378.4
431.0
487.4
565.5
619.3
692.9
78.5
78.5
103.1
97.1
122.2
111.1
140.7
138.8
157.7
167.3
195.1
220.2
241.8
260.6
279.3
301.9
330.4
385.3
432.4
480.2
521.7
558.8
81.9
81.9
107.7
101.4
127.5
116.0
146.9
144.9
164.6
174.5
203.6
229.7
252.3
271.9
291.4
315.0
344.6
401.9
451.1
501.4
544.7
583.3
108.3
113.5
142.8
132.9
161.6
145.3
194.1
191.9
212.8
208.3
242.6
277.9
294.0
317.9
349.2
381.0
418.8
476.9
539.4
625.4
684.9
766.2
109.1
114.2
143.8
133.9
162.7
146.2
195.4
193.1
214.1
209.5
244.1
279.6
295.9
319.9
351.3
383.3
421.2
479.8
542.6
629.2
689.1
771.1
73.9
73.9
97.1
91.5
115.0
104.6
132.5
130.7
148.5
158.2
184.4
208.1
228.5
246.4
264.0
285.4
312.3
364.0
408.8
452.2
491.3
526.2
77.4
77.4
101.7
95.8
120.5
109.5
138.8
136.8
155.5
165.4
192.8
217.6
239.0
257.6
276.1
298.4
326.5
380.7
427.4
473.6
514.5
551.1
118.4
124.0
156.0
145.2
176.6
158.7
212.1
209.6
232.4
227.8
265.3
304.0
321.6
347.8
382.0
416.8
458.1
521.6
590.0
683.1
748.1
836.9
119.3
125.0
157.2
146.4
178.0
159.9
213.7
211.2
234.2
229.5
267.2
306.2
324.0
350.3
384.7
419.8
461.3
525.4
594.2
688.2
753.7
843.3
63.0
62.5
82.8
78.0
98.1
89.2
112.9
106.6
126.5
134.8
156.9
176.0
194.3
209.1
224.4
242.2
266.1
309.3
348.4
385.3
418.7
448.2
65.4
64.9
86.0
81.0
101.9
92.6
117.4
110.8
131.5
140.0
162.9
182.6
201.6
217.0
232.9
251.4
276.3
321.1
361.6
400.6
435.2
465.8
122.6
127.3
161.6
150.4
182.9
164.4
219.7
207.9
240.7
235.4
274.2
314.0
332.4
359.3
394.7
430.6
473.2
539.1
609.5
707.4
774.7
866.5
122.6
127.3
161.6
150.4
182.9
164.4
219.7
207.9
240.7
235.4
274.2
314.0
332.4
359.3
394.7
430.6
473.2
539.1
609.5
707.4
774.7
866.5
90-5
90T-5
115-5
110T-5
140-5
125T-5
160-5
160T-5
180-5
190-5
220-5
250-5
275-5
295-5
315-5
340-5
375-5
435-5
490-5
545-5
595-5
635-5
94.1
94.1
123.6
116.5
146.4
133.2
168.7
166.4
189.0
199.1
232.4
262.0
287.9
310.2
332.6
359.3
393.2
458.9
514.6
575.7
625.5
669.9
88.6
92.9
116.8
108.6
132.2
118.7
158.7
156.9
173.9
170.2
198.2
227.1
240.3
259.9
285.4
311.3
342.1
389.7
440.7
511.1
559.7
626.2
90.1
90.1
115.2
110.5
140.1
125.3
160.0
160.1
180.0
190.1
220.7
250.1
275.2
295.0
315.8
341.3
375.0
435.8
490.1
546.2
595.0
635.5
99.5
104.2
127.7
121.1
148.5
131.2
176.8
177.0
194.4
190.3
220.5
253.8
269.2
289.6
317.5
346.4
382.2
433.5
491.6
569.0
624.9
697.2
85.8
85.8
112.8
106.2
133.6
121.5
153.9
151.8
172.5
182.2
212.6
239.8
263.4
283.8
304.3
328.8
359.8
419.8
470.9
525.3
570.7
611.2
109.8
115.0
144.7
134.7
163.8
147.2
196.8
194.4
215.6
210.8
245.6
281.3
297.7
321.8
353.5
385.7
423.9
482.9
546.0
633.6
694.0
776.5
81.3
81.3
106.9
100.7
126.6
115.1
145.8
143.8
163.4
173.1
201.9
227.7
250.2
269.6
289.0
312.3
341.7
398.6
447.3
497.7
540.7
579.1
120.2
125.9
158.5
147.5
179.4
161.2
215.5
212.9
236.1
231.1
269.2
308.4
326.3
352.8
387.6
422.8
464.7
529.3
598.5
693.8
759.9
850.2
68.2
67.6
89.7
84.4
106.2
96.6
122.3
115.5
137.1
145.4
169.3
189.6
209.5
225.4
241.9
261.1
286.8
333.6
375.5
417.6
453.6
485.5
122.6
127.3
161.6
150.4
182.9
164.4
219.7
207.9
240.7
235.4
274.2
314.0
332.4
359.3
394.7
430.6
473.2
539.1
609.5
707.4
774.7
866.5
NOTE : UNIT IS RUNNING ON PART LOAD FOR AMBIENT TEMPERATURE OF 115oF AND ABOVE DUE TO CURRENT LIMITER.
- 12 -
PERFORMANCE DATA
LWT
o
F
46.0
48.0
50.0
AMBIENT TEMPERATURE, oF
MODEL
AFHX
85.0
95.0
105.0
115.0
125.0
TR
kW
TR
kW
TR
kW
TR
kW
TR
kW
90-5
90T-5
120-5
110T-5
140-5
125T-5
160-5
160T-5
180-5
190-5
220-5
250-5
275-5
295-5
315-5
340-5
375-5
435-5
490-5
545-5
595-5
635-5
90-5
90T-5
120-5
110T-5
140-5
125T-5
160-5
160T-5
180-5
190-5
220-5
250-5
275-5
295-5
315-5
340-5
375-5
435-5
490-5
545-5
595-5
635-5
97.9
97.9
128.6
121.2
152.4
138.6
175.5
173.1
196.7
206.9
241.5
272.2
299.1
322.2
345.6
373.3
408.4
476.8
534.5
599.2
650.9
697.1
101.7
101.7
133.7
125.9
158.4
144.0
182.4
179.9
204.4
214.6
250.6
282.3
310.3
334.2
358.5
387.2
423.6
494.7
554.5
622.6
676.4
724.4
89.1
93.4
117.5
109.3
133.0
119.4
159.7
157.8
175.0
171.2
199.4
228.5
241.8
261.5
287.2
313.3
344.2
392.1
443.4
514.2
563.2
630.1
89.7
93.9
118.2
110.0
133.8
120.2
160.7
158.7
176.0
172.2
200.6
229.9
243.3
263.1
288.9
315.2
346.3
394.5
446.2
517.3
566.6
634.0
93.0
93.0
122.2
115.1
144.7
131.6
166.7
164.4
186.8
196.6
229.5
258.7
284.3
306.2
328.4
354.7
388.1
453.1
508.0
568.9
618.0
661.9
96.7
96.7
127.0
119.6
150.5
136.8
173.3
170.9
194.2
204.1
238.3
268.5
295.1
317.8
340.9
368.2
402.9
470.4
527.3
591.6
642.7
688.3
99.1
103.8
130.7
121.7
148.0
132.9
177.7
175.5
194.7
190.3
221.7
254.0
268.8
290.7
319.3
348.2
382.7
435.9
492.9
572.1
626.6
701.0
99.7
104.4
131.4
122.3
148.8
133.6
178.7
176.5
195.7
191.4
223.0
255.4
270.3
292.2
321.0
350.1
384.7
438.2
495.5
575.2
630.0
704.8
89.5
89.5
117.7
110.8
139.4
126.7
160.5
158.3
179.9
189.7
221.4
249.6
274.3
295.5
316.8
342.3
374.5
437.1
490.2
548.0
595.3
637.5
93.3
93.3
122.5
115.4
145.2
132.0
167.2
164.9
187.4
197.2
230.2
259.4
285.1
307.1
329.3
355.7
389.2
454.4
509.5
570.6
619.9
663.9
110.4
115.7
145.6
135.5
164.7
148.0
197.9
195.5
216.8
212.0
246.9
282.9
299.3
323.6
355.5
387.8
426.2
485.5
548.9
637.1
697.8
780.7
111.0
116.3
146.4
136.2
165.6
148.8
199.0
196.6
218.0
213.1
248.3
284.5
301.0
325.4
357.4
389.9
428.5
488.1
551.9
640.6
701.6
785.0
85.0
85.0
111.7
105.2
132.3
120.3
152.4
149.0
170.8
180.5
210.6
237.5
260.9
281.1
301.4
325.7
356.3
415.8
466.4
520.2
565.2
605.3
88.7
88.7
116.5
109.8
138.1
125.5
159.0
152.7
178.2
187.9
219.3
247.3
271.7
292.7
313.8
339.1
371.0
433.0
485.6
542.7
589.6
631.5
121.0
126.7
159.5
148.5
180.5
162.2
216.9
212.4
237.6
232.6
271.0
310.4
328.4
355.1
390.1
425.6
467.7
532.7
602.4
698.3
764.8
855.7
121.8
127.5
160.6
149.4
181.7
163.3
218.3
210.0
239.1
234.1
272.7
312.4
330.6
357.4
392.5
428.3
470.7
536.1
606.2
702.8
769.7
861.2
70.8
70.2
93.0
87.6
110.2
100.2
126.9
119.8
142.3
150.5
175.3
196.3
216.9
233.4
250.5
270.4
296.9
345.5
388.7
433.3
470.7
503.8
73.3
72.7
96.4
90.7
114.1
103.8
131.5
124.1
147.3
155.5
181.2
203.0
224.2
241.2
259.0
279.5
306.8
357.2
401.7
448.7
487.5
521.8
122.6
127.3
161.6
150.4
182.9
164.4
219.7
207.9
240.7
235.4
274.2
314.0
332.4
359.3
394.7
430.6
473.2
539.1
609.5
707.4
774.7
866.5
122.6
127.3
161.6
150.4
182.9
164.4
219.7
207.9
240.7
235.4
274.2
314.0
332.4
359.3
394.7
430.6
473.2
539.1
609.5
707.4
774.7
866.5
90-5
90T-5
120-5
110T-5
140-5
125T-5
160-5
160T-5
180-5
190-5
220-5
250-5
275-5
295-5
315-5
340-5
375-5
435-5
490-5
545-5
595-5
635-5
105.6
105.6
138.7
130.7
164.3
149.4
189.3
186.7
212.1
222.7
260.1
293.0
322.1
346.9
372.1
401.9
439.7
513.5
575.5
646.0
701.8
751.6
90.2
94.4
119.0
110.6
134.6
120.9
161.7
159.7
177.1
173.3
201.9
231.4
244.8
264.7
290.7
317.2
348.5
397.0
449.0
520.5
570.1
637.9
100.4
100.4
131.9
124.2
156.2
142.1
180.0
177.5
201.7
211.9
247.5
278.9
306.5
330.1
354.1
382.4
418.4
488.6
547.6
614.3
667.3
714.7
100.2
105.0
132.1
122.9
149.6
134.3
179.6
177.4
196.8
192.4
224.2
256.8
271.7
293.8
322.7
351.9
386.8
440.6
498.2
578.3
633.4
708.6
97.0
97.0
127.4
120.0
150.9
137.2
173.8
171.4
194.8
204.9
239.2
269.6
296.4
319.2
342.3
369.8
404.6
472.3
529.5
593.3
644.5
690.3
111.6
116.9
147.2
137.0
166.5
149.7
200.0
197.7
219.2
214.2
249.6
285.9
302.5
327.0
359.3
391.9
430.7
490.6
554.7
644.1
705.4
789.2
92.4
91.6
121.4
114.3
143.8
130.7
165.6
156.3
185.6
195.5
228.2
257.2
282.7
304.5
326.6
352.8
386.0
450.6
505.3
565.3
614.1
651.2
122.6
127.3
161.6
150.4
182.9
164.4
219.7
207.9
240.7
235.4
274.2
314.0
332.4
359.3
394.7
430.6
473.2
539.1
609.5
707.4
774.7
866.5
75.8
75.2
99.6
93.8
118.0
107.3
135.9
128.3
152.3
160.9
187.5
210.0
231.9
249.5
267.9
289.1
317.4
369.6
415.6
464.0
504.1
539.6
122.6
127.3
161.6
150.4
182.9
164.4
219.7
207.9
240.7
235.4
274.2
314.0
332.4
359.3
394.7
430.6
473.2
539.1
609.5
707.4
774.7
866.5
o
NOTE : UNIT IS RUNNING ON PART LOAD FOR AMBIENT TEMPERATURE OF 115 F AND ABOVE DUE TO CURRENT LIMITER.
- 13 -
DIMENSIONAL DATA
AFHX 90-5, 90T-5, 120-5, 110T-5
AFHX 140-5, 125T-5, 160-5, 160T-5
NOTE : ALL DIMENSIONS ARE IN INCHES(MM).
- 14 -
DIMENSIONAL DATA
AFHX 180-5
AFHX 190-5, 220-5, 250-5
NOTE : ALL DIMENSIONS ARE IN INCHES(MM).
- 15 -
DIMENSIONAL DATA
AFHX 275-5
AFHX 295-5, 315-5, 340-5
NOTE : ALL DIMENSIONS ARE IN INCHES(MM).
- 16 -
DIMENSIONAL DATA
AFHX 375-5
AFHX 435-5, 490-5
NOTE : ALL DIMENSIONS ARE IN INCHES(MM).
- 17 -
DIMENSIONAL DATA
AFHX 545-5
AFHX 595-5, 635-5
NOTE : ALL DIMENSIONS ARE IN INCHES(MM).
- 18 -
TYPICAL WIRING SCHEMATIC
TWO COMPRESSORS UNIT
- 19 -
TYPICAL WIRING SCHEMATIC
- 20 -
TYPICAL WIRING SCHEMATIC
Ω
Ω
- 21 -
TYPICAL WIRING SCHEMATIC
- 22 -
TYPICAL WIRING SCHEMATIC
- 23 -
SOUND PRESSURE LEVEL AT 10 METER
SPL dBA
Model
BAND (Hz)
63
125
250
500
1K
2K
4K
8K
Total
NC
AFHX 90-5
36
40
50
57
57
54
50
45
62
55
AFHX 90T-5
36
40
50
58
58
54
50
45
62
60
AFHX 120-5
39
43
53
60
60
57
53
48
65
60
AFHX 110T-5
39
43
53
60
60
56
53
48
64
60
AFHX 140-5
40
45
54
61
61
58
54
49
66
60
AFHX 125T-5
42
47
56
62
62
60
57
51
67
60
AFHX 160-5
40
45
54
63
62
58
54
49
67
60
AFHX 160T-5
41
46
55
61
62
59
56
50
67
60
AFHX 180-5
40
45
58
63
62
58
54
49
67
60
AFHX 190-5
41
45
54
61
61
59
55
50
66
60
AFHX 220-5
43
47
57
63
63
61
57
52
68
60
AFHX 250-5
43
48
57
64
64
61
58
52
69
65
AFHX 275-5
43
48
57
64
64
61
57
52
69
65
AFHX 295-5
43
48
57
64
64
61
57
52
69
65
AFHX 315-5
43
48
57
65
65
61
57
52
69
65
AFHX 340-5
43
48
57
66
65
61
57
52
70
65
AFHX 375-5
44
49
61
66
66
62
58
53
71
65
AFHX 435-5
46
50
62
67
67
63
60
55
72
65
AFHX 490-5
44
55
63
68
68
64
61
56
73
70
AFHX 545-5
49
53
64
69
69
66
63
58
74
70
AFHX 595-5
49
53
65
70
70
67
63
58
75
70
AFHX 635-5
49
53
65
70
70
67
63
58
75
70
- 24 -