McQuay ALR 110F, ALR 120F, ALR 140F, ALR 130F, ALR 135F Product Manual
...
Product Manual
Air-Cooled Reciprocating Water Chillers
ALR 110F through 150F
110 to 150 Tons, 380 to 525 kW
R-22
60 Hertz
PM ALR2-3
Group: Chiller
Date: August 2000
Supersedes: PM ALR2-2
© 2000 McQuay International
Table of Contents
Introduction...................................................................................................................3
Design Advantages.........................................................................................................4
Selection Procedure.......................................................................................................9
Performance Adjustment Factors..................................................................................10
Performance Data........................................................................................................12
Part Load Data............................................................................................................14
Pressure Drops............................................................................................................15
Sound Data..................................................................................................................16
Electrical Data..............................................................................................................20
Physical Data...............................................................................................................27
Dimensional Data.........................................................................................................29
Installation and Application...........................................................................................30
Remote Evaporator......................................................................................................40
Dimensions, Remote Evaporator...................................................................................42
Optional Features.........................................................................................................43
Specifications...............................................................................................................45
Remote evaporator arrangement
is not in ARI certification
Our facility is ISO Certified
"McQuay" is a registered trademark of McQuay International
"Information covers McQuay International products at the time of publication and we reserve the right to make changes in
design and construction at anytime without notice"
2 ALR 110F – 150F Product Manual ALR2-3
1997 McQuay International
Introduction
McQuay International offers a complete line of air-cooled chillers from 10 to 425 tons (35 to
1500 kW) utilizing scroll, reciprocating, and rotary screw compressors.
The McQuay ALR reciprocating compressor, air-cooled chiller is a product of the McQuay
commitment to offer reliable, energy efficient equipment design. A design approach
incorporating high quality compressors and uncompromised operating efficiency. McQuay
International will provide its customers with products and services that meet or exceed their
expectations in terms of quality, availability and competitiveness.
Efficiency
• Cross-circuit compressor unloading
• Copeland DISCUS compressors
• High efficiency lanced fin condenser coils
ARI 550/590-98 Certified
FEATURES-BENEFITS
Reliability
• Rugged compressor design
• Factory installed operating and safety controls
• Factory run tested with water hookup
• Code and agency approval
Flexibility
• Complete factory assembly
• Large size availability in small capacity increments
• A wide variety of field and factory installed options
• Available with remote evaporator (R-22 only)
Serviceability
• Semi-hermetic compressors
• Suction and discharge service valves
• Dual refrigerant circuits
Product Manual ALR2-3 ALR 110F – 150F 3
Design Advantages
Construction
The ALR 110F through 150F are factory assembled and mounted on a rugged steel channel base. The
channel base distributes the unit weight for low roof loading. Lifting holes in the base simplify
rigging. Optional wire mesh base guards are available to prevent intrusion to the area under the coils.
The units pass the ASTM B117 500 hour salt spray test.
Compressors
ALR 110F through 150F chillers use Copeland DISCUS semi-hermetic compressors. These
compressors are designed for Refrigerant 22 and the high loading associated with air-cooled
applications.
Semi-hermetic, 1750 rpm induction type motors are used. The motors are refrigerant-gas cooled.
Solid-state modules in the motor terminal box respond to temperature sensors imbedded in all three
motor windings, providing inherent thermal overload protection for all run and start conditions.
The compressor housing is constructed from closed grained, high nickel content, alloy cast-iron with
no bolted joint between the motor and compressor. The housing includes a cast-iron cylinder head
and stator cover, and a crankcase oil sightglass. A suction strainer built into the compressor in the gas
stream between the suction service valve and the motor, filters out foreign and abrasive particles. An
internal relief valve relieves discharge pressure to the suction side for safety protection at high
compression ratios as required by ANSI/ASHRAE 15 Safety Code.
Main bearings are solid cast bronze insert type with oversized bearing area that result in ultra-low
bearing loading.
The crankshaft is die-forged, high strength iron alloy with integral counterweights, statically and
dynamically balanced for smooth operation.
Connecting rods are lightweight aluminum with integral bearing surfaces on the crankshaft and piston
ends. Pistons are close grain cast iron with oil and compression rings. Piston pins are full floating
type for long life.
Compressors have a forced-feed lubrication system with positive oil displacement, a reversible oil
pump, and an operating oil charge. The pump feeds oil through rifle drilled passages in the crankshaft
to all bearing surfaces. Magnetic plugs trap magnetic particles that enter the crankcase. The oil
supply filters through a large area oil strainer. A crankcase heater minimizes oil dilution by refrigerant
at start-up.
Condenser Coils
Condenser coils have internally enhanced seamless copper tubes arranged in a staggered row pattern.
The tubes are mechanically expanded into McQuay lanced and rippled aluminum fins with full fin
collars. See the Application Section of this manual for optional corrosive resistant fin material and
coatings. An integral subcooler circuit provides subcooling to effectively eliminate the possibility of
liquid flashing. Vinyl coated wire mesh coil guards for fin protection are supplied as standard.
Condenser Fans and Motors
Multiple direct drive propeller fans operate in formed bell shaped orifices at low tip speeds for
maximum efficiency and minimum noise and vibration. A heavy-gauge close mesh fan guard protects
each fan.
Each condenser fan motor is heavy-duty, 3-phase with permanently lubricated ball bearings and
inherent overload protection.
4 ALR 110F – 150F Product Manual ALR2-3
Hot Gas Mufflers
Hot gas discharge line mufflers are installed in each refrigerant circuit to reduce the overall sound
levels.
Evaporator
The evaporator is direct expansion, shell-and-tube type with water flowing in the baffled shell side and
refrigerant flowing through the tubes. Two independent refrigerant circuits within the evaporator
serve the unit's dual refrigerant circuits.
The evaporator has a carbon steel shell and seamless high efficiency copper tubes roller expanded
into a carbon steel tube sheet.
Refrigerant heads are carbon steel with multi-pass baffles to ensure oil return and are removable to
permit access to the tubes from either end. For water removal and venting, 1/2" (12.7mm) vent and
drain plugs are provided on the top and bottom of the shell.
The evaporator is wrapped with an electric resistance heater cable and insulated with 3/4" (19mm)
thick vinyl nitrate polymer sheet insulation, protecting against water freeze-up at ambient air
temperatures to -20°F (-29°C). An ambient thermostat controls the heater cable.
The insulation has a K factor of 0.28 at 75°F (23°C). The fitted and cemented in place insulation is
painted with a resilient vinyl base paint to resist cracking.
The tube side maximum working pressure is 315 psig (2170 kPa). The water side working pressure is
152 psig (1047 kPa). Each evaporator is designed, constructed, inspected, and stamped according to
the requirements of the ASME Boiler and Pressure Vessel Code.
NOTE : A chilled water pump starter interlock, water flow switch or both, must be field installed to
protect against evaporator freeze-up under low water flow conditions.
Electrical Control Center
Operating controls, safety controls, control transformer, and motor starting equipment is factory wired,
operationally tested, and ready for service. All centrally located controls are in a weatherproof,
hinged control center with key-locked doors. Panel access doors include steel rod door retainers to
secure the doors when open.
A fixed 5-minute, solid-state lockout timer delays compressor restart after a safety cutout, power
interruption, or thermostat cycling.
Power connection to the unit can be single-point or multiple-point. Single point is usually more
economical. Multiple point provides separate power for each of two compressor circuits plus a third
circuit for the fans and control power.
Part winding start is standard on 208 and 230 volt compressor motors. Across-the-line start is
standard on 380, 460 and 575 volts.
Circuit Breakers
Circuit breakers are factory installed, providing unit compressor short circuit protection.
Standard UNT Controller
This microprocessor based control accomplishes unit capacity control by staging compressors and by
cylinder unloading based on leaving chilled water temperature. Setpoint and control band are easily
field adjusted. Anti-cycling and stage delay timers are included. Safety controls include low
refrigerant pressure, low evaporator flow (field installed flow switch), low oil pressure, and sensor
failures. Outside air temperature sensor is standard. Reset options are; outside air, return water,
remote reset, demand limit, zone temperature reset. The optional Zone Terminal and Display control is
required to adjust the reset setpoints.
Product Manual ALR2-3 ALR 110F – 150F 5
Thirty feet of sensor cable is included, rolled up in the control panel, on remote evaporator models.
The cable can be field spliced for a total run not to exceed 75 feet.
Figure 1, Standard UNT Controller
UNT with Optional Zone Terminal and Display
The optional Zone Terminal and Display can be mounted in the chiller control panel or remotely
located providing monitoring and adjusting of certain functions.
• Monitoring
• Monitor up to three setting or sensed values
• Monitor 18 different on/off inputs
• Monitor alarm status via a flashing alarm light and flashing symbol
• Adjusting allows adjustment of any flashing set points, three at a time, typically set up so that the
relationship between values can be viewed simultaneously. For example:
• Display 1 = Lvg Water temp, Display 2 = Lvg Water SP, Display 3 = % Unit Load
6 ALR 110F – 150F Product Manual ALR2-3
Figure 2, Zone Terminal Configuration
Display Item List
Display Indicator Dot
Warning Signal
On/Off Status
Display
Button 1
Mode
Selector
Button
Mode
Selector
Panel
Door
2
3
Mc Quay AGZ/AG R Global Chiller
Lvg Water Temp
Evap Pres #1
Evap Pres #2
OA/AI3 Input
OA/AI3 HiLimSP
OA/AI3 ResetSP
Lvg Water SP
LvgWtr RBnd SP
Contrl Band SP
Actual Lvg SP
Unoccpd Lvg SP
OA Lockout SP
% Unit Load
Lvg Low Lim SP
SoftSta Capcty
SoftStart Time
Cir #1 Starts
Cir #2 Starts
Operating Mode Indicator
MONI TOR
ADJU ST
TIME SCH EDU LE
PASS WORD
ENTER
INSERT 10
Display Area 11
Display Area 21
Display Area 31
Up/Down Arrow Keys
ON OFF
Occupied
Flow Failure
OA Lockout
Cir#2Lead=On
Pmp/Stp #1=0
Pmp/Stp #2=0
Solenoid #1
Solenoid #2
Frzstat#1Alm
Frzstat#2Alm
MinLowPres#1
MinLowPres#2
Compressor 1
Compressor 2
Stage 3
Stage 4
Stage 5 Opt.
Stage 6 Opt.
ALARM
Alarm Light
AGZ-AGR
Optional MicroTech Control
The exclusive MicroTech microprocessor control is common throughout McQuay equipment. The
interface is a 12 key keypad and 2-line, 32 character backlit liquid crystal display. The MicroTech
continuously performs self-diagnostic checks on all system temperatures, pressures, and safeties, and
will automatically shut down a circuit or the entire unit if a fault condition occurs. The cause, time,
and date of the occurrence is recorded and can be displayed. The seven previous incidents are kept
in memory for service reference.
If a fault occurs, the controller takes preventive measures in an effort to keep the unit operating;
staging down capacity, activating a pre-alarm signal, and automatically switching to the alarm menu on
the display. Pre-alarms are self-clearing when the fault condition is no longer present.
Critical shutdown alarms such as high condenser pressure (with mechanical back up), freeze
protection, oil pressure (with mechanical back up), and low evaporator pressure are manual reset and
must be cleared at the keypad to resume operation.
Choose the MicroTech control and Open Protocol options to interface with virtually any building
management system and perform remote monitoring and control by hard wiring or modem. A nominal
site license fee is required for a Building Automation System (BAS) interface.
A single chiller can connect directly to the BAS. Two or more units will require an Open Protocol
Panel (OPM) for connection.
Thirty feet of sensor cable is included, rolled up in the control panel, on remote evaporator models.
The cable can be field spliced for a total run not to exceed 75 feet.
Product Manual ALR2-3 ALR 110F – 150F 7
Figure 3, Optional MicroTech Control Panel
Figure 4, MicroTech Control
8 ALR 110F – 150F Product Manual ALR2-3
Selection Procedure
Selection Procedure
Table 4 (R-22) covers the range of leaving evaporator water temperatures and ambient air temperatures
encompassed under ARI 550/590-98. Table 5 covers SI units. The tables are based on a 10 degree F
temperature drop through the evaporator (2.4 gpm/ton). Adjustment factors for applications having
other than a 10 degree F drop can be found in Table 3. The minimum leaving chilled water temperature
setpoint without glycol is 40°F. For brine selections, see Table 1 for ethylene glycol or Table 2 for
propylene glycol adjustment factors. Ratings are based on a 0.0001 fouling factor in the evaporator at
sea level operation. See Table 3 for other fouling factors, derates for different delta-Ts, or altitude
correction factors. For applications outside the catalog ratings contact your local McQuay sales
representative.
Selection example
Given:
R-22, 110 tons minimum.
95°F ambient temperature
264 gpm, 54°F - 44°F chilled water
0.0001 evaporator fouling factor
1. From Performance Table 4, an ALR 110F at the given conditions will produce 110.9 tons with a
compressor kW input of 120.6 and a unit EER of 9.8
2. Use the following formula (for water) to calculate missing elements:
tons°∆×
= gpm
24
FT
3. Determine the evaporator pressure drop. Using Figure 5, enter at 264 gpm and follow up to the
ALR 110 line intersect. Read horizontally to obtain an evaporator pressure drop of 14.3 feet of
water.
Selection example using ethylene glycol
Given:
R-22, 105 tons minimum
95°F ambient air temperature
54°F - 44°F chilled water temperature
0.0001 evaporator fouling factor
Protect from freezing down to 0°F
1. From Table 1, select an ethylene glycol concentration of 40% to protect against freezing at 0°F.
2. At 40% glycol: Capacity = 0.961, kW = 0.976,
flow = 1.121, pressure drop = 1.263
3. Consider the ALR 110F and correct with 40% ethylene glycol factors.
4. Correct capacity = 0.961 x 110.9 tons = 106.6 tons
5. Correct compressor kW = 0.976 x 120.6 kW = 119.5 kW
6. Correct chilled water flow for flow required for the glycol solution:
246.106
tons°∆×
= capacity) corrected(at flowWater
10
FT
Glycol flow (at 40% solution) = 1.121 x 256 gpm = 286.8 gpm
gpm 256 =
Determine the evaporator pressure drop. Using Figure 5, enter at 256 gpm (water flow rate) and follow
up to the ALR 110F line intersect. Read horizontally to obtain an evaporator pressure drop of 13.6
feet. The pressure drop for 40% solution = 1.263 x 13.6 feet = 17.2 feet of water
Product Manual ALR2-3 ALR 110F – 150F 9
Performance Adjustment Factors
Ethylene and Propylene Glycol Factors
ALR units can operate with a leaving chilled fluid temperature range of 20°F (-6°C) to 60°F (10°C). A
glycol solution is required when leaving chilled fluid temperature is below 40°F (4.6°C). The use of
glycol will reduce the performance of the unit depending on concentration. Manufacturers do not
recommend the use of solutions of less than 25 percent due to the possibility of insufficient corrosion
protection.
Altitude Correction Factors
Performance tables are based at sea level. Elevations other than sea level affect the performance of the
unit. The decreased air density will reduce condenser capacity, consequently reducing the unit's
performance. For performance at elevations other than sea level refer to Table 3.
Evaporator Temperature Drop Factors
Performance tables are based on a 10 degree F (5.5 degree C) temperature drop through the evaporator.
Adjustment factors for applications having temperature drops from 6 degree F to 16 degree F (3.3
degree C to 8.9 degree C) are in Table 3. Temperature drops outside this range may affect the control
system's capability to maintain acceptable control and are not recommended.
The maximum water temperature that can be circulated through the evaporator in a non-operating
mode is 100°F (37.8°C).
Table 1, Ethylene Glycol
Freeze Point%
E.G.
10 26 -3 0.991 0.996 1.013 1.070
20 18 -8 0.982 0.992 1.040 1.129
30 7 -14 0.972 0.986 1.074 1.181
40 -7 -22 0.961 0.976 1.121 1.263
50 -28 -33 0.946 0.966 1.178 1.308
Table 2, Propylene Glycol
P.G.
10 26 -3 0.987 0.992 1.010 1.068
20 19 -7 0.975 0.985 1.028 1.147
30 9 -13 0.962 0.978 1.050 1.248
40 -5 -21 0.946 0.971 1.078 1.366
50 -27 -33 0.929 0.965 1.116 1.481
Units operating with glycol solutions are not included in the ARI
Certification Program.
°F °C
Freeze Point%
°F °C
Capacity Power Flow PD
Capacity Power Flow PD
Fouling factor
Performance tables are based on a fouling factor of 0.0001 ft2 x hr x °F/Btu (0.0176 m2 x °C/kW) per
ARI Standard 550/590-98. As fouling is increased, performance decreases. Refer to Table 3 for
performance at other than 0.0001 (.0176) fouling factor.
Foreign matter in the chilled water system will adversely affect the heat transfer capability of the
evaporator, and could increase the pressure drop and reduce the water flow. To ensure optimum unit
operation, proper water treatment must be maintained.
10 ALR 110F – 150F Product Manual ALR2-3
Table 3, Capacity and Power Derates
Chilled Water
SEA
LEVEL
2000 feet
(610 m)
4000 feet
(1220 m)
6000 feet
(1830 m)
Delta-T
°F °C Cap. Power Cap. Power Cap. Power Cap. Power
6 3.3 0.992 0.995 0.985 0.993 0.962 0.986 0.919 0.972
8 4.4 0.995 0.997 0.988 0.995 0.965 0.988 0.922 0.974
10 5.6 1.000 1.000 0.993 0.998 0.970 0.991 0.927 0.977
12 6.7 1.005 1.002 0.998 1.000 0.975 0.993 0.932 0.979
14 6.8 1.010 1.005 1.003 1.003 0.980 0.996 0.936 0.982
16 8.9 1.014 1.007 1.007 1.005 0.984 0.998 0.940 0.984
6 3.3 0.978 1.005 0.971 1.003 0.949 0.996 0.906 0.982
8 4.4 0.982 1.007 0.975 1.005 0.953 0.998 0.910 0.984
10 5.6 0.986 1.009 0.979 1.007 0.956 1.000 0.914 0.986
12 6.7 0.992 1.011 0.985 1.009 0.962 1.002 0.919 0.988
14 6.8 0.997 1.014 0.990 1.012 0.967 1.005 0.924 0.991
16 8.9 1.000 1.016 0.993 1.014 0.970 1.007 0.927 0.993
6 3.3 0.966 1.016 0.959 1.014 0.937 1.007 0.895 0.993
8 4.4 0.969 1.018 0.962 1.016 0.940 1.009 0.898 0.995
10 5.6 0.973 1.021 0.966 1.019 0.944 1.012 0.902 0.998
12 6.7 0.978 1.025 0.971 1.023 0.949 1.016 0.906 1.002
14 6.8 0.982 1.027 0.975 1.025 0.953 1.018 0.910 1.004
16 8.9 0.986 1.028 0.979 1.026 0.956 1.019 0.914 1.005
6 3.3 0.953 1.025 0.946 1.023 0.924 1.016 0.883 1.002
8 4.4 0.955 1.028 0.948 1.026 0.926 1.019 0.885 1.005
10 5.6 0.959 1.031 0.952 1.029 0.930 1.022 0.889 1.008
12 6.7 0.963 1.034 0.956 1.032 0.934 1.024 0.893 1.011
14 6.8 0.968 1.036 0.961 1.034 0.939 1.026 0.897 1.013
16 8.9 0.972 1.037 0.965 1.035 0.943 1.027 0.901 1.014
0.0001 (0.0176) 0.00025 (0.044) 0.00075 (0.132) 0.00175 (0.308)ALTITUDE
NOTE: Contact McQuay sales office for applications above 6,000 feet.
Fouling Factor
Product Manual ALR2-3 ALR 110F – 150F 11
Performance Data
Table 4, ALR 110F - 150F, R-22, I-P Units
ALR
LWT
SIZE
110F
120F
130F
135F
140F
145F
150F
NOTES:
1. Bold box areas certified in accordance with ARI Standard 550/590-98.
2. Ratings based on HCFC-22, evaporator fouling of 0.0001, evaporator temperature drop of 10°F and sea level altitude.
3. For 208V units multiply capacity and EER by 0.98. For units with SpeedTrol option multiply capacity and EER by 0.99.
4. Interpolation is allowed; extrapolation is not permitted. Consult McQuay for performance outside the cataloged ratings.
5. kWi input is for compressors only. EER is for the entire unit, including compressors, fan motors and control power.
6. For LWT of 40°F and below please refer to application considerations for reciprocating chillers located in this manual.
(°F)
40.0 115.8 99.7 12.1 109.6 108.3 10.8 103.4 116.7 9.4 96.8 125.1 8.4 90.9 133.5 7.3
42.0 118.9 101.0 12.4 113.3 110.0 10.9 106.9 118.6 9.6 100.3 127.4 8.5 94.0 136.1 7.5
44.0 123.4 102.4 12.6 116.9 111.6 11.1
46.0 127.5 103.7 12.9 120.8 113.2 11.3 114.5 122.5 10.0 107.2 131.8 8.8 100.3 141.2 7.7
48.0 130.8 104.9 13.2 123.9 114.8 11.6 117.5 124.4 10.1 110.0 133.9 8.9 103.0 143.8 7.9
50.0 136.0 106.2 13.5 129.1 116.5 11.8 122.0 126.2 10.4 114.7 136.2 9.1 107.5 146.4 8.0
40.0 127.7 106.9 11.8 120.9 116.1 10.5 114.1 125.1 9.2 106.7 134.1 8.2 100.2 143.1 7.2
42.0 131.2 108.3 12.1 124.9 117.9 10.7 117.8 127.2 9.4 110.6 136.6 8.3 103.7 145.9 7.3
44.0 136.1 109.7 12.3 129.0 119.7 10.9
46.0 140.6 111.1 12.6 133.2 121.3 11.1 126.3 131.3 9.8 118.2 141.3 8.6 110.6 151.3 7.6
48.0 144.2 112.4 12.9 136.7 123.0 11.3 129.6 133.4 9.9 121.3 143.6 8.7 113.6 154.2 7.7
50.0 150.0 113.9 13.2 142.4 124.8 11.6 134.6 135.3 10.1 126.5 146.0 8.9 118.6 156.9 7.8
40.0 135.4 117.1 12.2 128.2 127.2 10.8 120.9 137.1 9.5 113.1 147.0 8.4 106.3 156.8 7.4
42.0 139.1 118.7 12.4 132.5 129.1 11.0 124.9 139.3 9.6 117.3 149.7 8.5 109.9 159.9 7.5
44.0 144.2 120.2 12.5 136.7 131.1 11.0
46.0 149.0 121.8 12.8 141.3 133.0 11.2 133.9 143.9 9.9 125.3 154.8 8.7 117.3 165.8 7.6
48.0 152.9 123.2 13.0 144.9 134.8 11.4 137.4 146.1 10.0 128.6 157.3 8.8 120.4 168.9 7.8
50.0 159.0 124.7 13.3 151.0 136.8 11.7 142.7 148.3 10.2 134.1 160.0 9.0 125.7 171.9 7.9
40.0 139.7 123.8 11.8 132.2 134.4 10.5 124.7 144.9 9.2 116.7 155.4 8.2 109.6 165.7 7.2
42.0 143.5 125.4 12.1 136.6 136.5 10.7 128.9 147.3 9.4 121.0 158.2 8.3 113.4 169.0 7.3
44.0 148.8 127.1 12.3 141.1 138.6 10.8
46.0 153.8 128.7 12.6 145.7 140.6 11.1 138.1 152.1 9.8 129.3 163.6 8.6 121.0 175.3 7.6
48.0 157.8 130.2 12.9 149.5 142.5 11.3 141.7 154.5 9.9 132.6 166.3 8.7 124.2 178.6 7.7
50.0 164.0 131.9 13.2 155.8 144.6 11.5 147.2 156.7 10.1 138.4 169.2 8.9 129.7 181.7 7.8
40.0 145.9 129.9 11.6 138.1 141.1 10.3 130.3 152.1 9.0 121.9 163.1 8.0 114.5 173.9 7.0
42.0 149.9 131.7 11.8 142.7 143.3 10.5 134.6 154.6 9.2 126.4 166.1 8.1 118.4 177.4 7.1
44.0 155.4 133.4 12.3 147.3 145.5 10.8
46.0 160.6 135.1 12.6 152.2 147.5 11.1 144.3 159.6 9.8 135.1 171.7 8.6 126.4 184.0 7.6
48.0 164.8 136.7 12.9 156.1 149.6 11.3 148.0 162.1 9.9 138.5 174.5 8.7 129.7 187.4 7.7
50.0 171.4 138.4 13.2 162.7 151.8 11.5 153.8 164.5 10.1 144.6 177.5 8.9 135.5 190.7 7.8
40.0 149.7 132.5 11.9 141.6 143.9 10.6 133.6 155.1 9.3 125.0 166.3 8.2 117.4 177.3 7.2
42.0 153.7 134.2 12.2 146.4 146.1 10.7 138.1 157.6 9.4 129.6 169.3 8.4 121.4 180.9 7.3
44.0 159.4 136.0 12.4 151.1 148.3 10.9
46.0 164.7 137.8 12.7 156.1 150.4 11.1 147.9 162.8 9.8 138.5 175.1 8.6 129.6 187.6 7.6
48.0 169.0 139.4 13.0 160.1 152.5 11.4 151.8 165.3 9.9 142.1 178.0 8.8 133.0 191.1 7.7
50.0 175.7 141.1 13.2 166.8 154.7 11.6 157.7 167.7 10.2 148.2 181.0 8.9 138.9 194.5 7.9
40.0 156.2 138.7 11.9 147.8 150.6 10.6 139.5 162.3 9.3 130.5 174.0 8.2 122.6 185.6 7.2
42.0 160.4 140.5 12.2 152.8 152.9 10.7 144.1 165.0 9.4 135.3 177.2 8.4 126.8 189.3 7.3
44.0 166.4 142.3 12.4 157.7 155.3 10.9
46.0 171.9 144.2 12.7 162.9 157.4 11.1 154.4 170.3 9.8 144.5 183.2 8.6 135.3 196.3 7.6
48.0 176.4 145.9 13.0 167.1 159.6 11.4 158.4 173.0 9.9 148.3 186.3 8.8 138.9 200.0 7.7
50.0 183.4 147.7 13.2 174.1 162.0 11.6 164.6 175.5 10.2 154.7 189.5 8.9 145.0 203.5 7.9
Capac.
Tons
75.0°F 85.0°F 95.0°F 105.0°F 115.0°F
PWR
kWi
EER
Capac.
Tons
PWR
kWi
Capac.
EER
Tons
110.9 120.6 9.8
122.2 129.2 9.6
129.6 141.6 9.7
133.7 149.7 9.6
139.7 157.1 9.6
143.2 160.2 9.6
149.5 167.7 9.6
PWR
kWi
Capac.
EER
Tons
103.8 129.6 8.5 97.1 138.6 7.6
114.4 138.9 8.3 107.1 148.6 7.4
121.3 152.2 8.4 113.5 162.8 7.5
125.1 160.9 8.3 117.1 172.2 7.4
130.7 168.9 8.3 122.3 180.7 7.4
134.1 172.2 8.4 125.5 184.2 7.5
139.9 180.2 8.4 130.9 192.8 7.5
PWR
kWi
EER
Capac.
Tons
PWR
kWi
EER
12 ALR 110F – 150F Product Manual ALR2-3
Table 5, ALR 110F - 150F, R-22, SI Units
AMBIENT AIR TEMPERATURE
ALR
SIZE
110F
120F
130F
135F
140F
145F
150F
NOTES:
1. Ratings based on HCFC-22, evaporator fouling of 0.0176, evaporator temperature drop of 5.6°C and sea level altitude.
2. For 208V units multiply capacity and COP by 0.98.
3. For units with SpeedTrol option multiply capacity and COP by 0.99.
4. Interpolation is allowed; extrapolation is not permitted. Consult McQuay for performance outside the cataloged ratings.
5. kWi input is for compressors only. COP is for the entire unit, including compressors, fan motors and control power.
6. For LWT of 5°C and below please refer to application considerations for reciprocating chillers.
LWT
(°C)
5.0 (41.0°F) 412.8 100.4 3.6 392.0 109.1 3.2 369.8 117.7 2.8 346.6 126.3 2.5 325.1 134.8 2.2
6.0 (42.8°F) 424.5 101.6 3.7 403.6 110.6 3.2 381.4 119.4 2.8 357.6 128.3 2.5 335.0 137.1 2.2
7.0 (44.6°F) 438.2 102.8 3.7 415.4 112.1 3.3 393.7 121.1 2.9 368.5 130.3 2.5 344.9 139.4 2.2
8.0 (46.4°F) 450.7 103.9 3.8 427.1 113.5 3.3 404.8 122.9 2.9 378.9 132.2 2.6 354.7 141.7 2.3
9.0 (48.2°F) 461.9 105.0 3.9 437.7 114.9 3.4 414.8 124.6 3.0 388.4 134.2 2.6 363.8 144.1 2.3
10.0 (50.0°F) 478.3 106.2 3.9 454.2 116.5 3.5 429.2 126.2 3.0 403.5 136.2 2.7 378.2 146.4 2.3
5.0 (41.0°F) 455.3 107.6 3.5 432.3 117.0 3.1 407.8 126.1 2.7 382.2 135.4 2.4 358.5 144.5 2.1
6.0 (42.8°F) 468.2 108.9 3.6 445.0 118.6 3.2 420.6 128.0 2.8 394.4 137.5 2.4 369.4 147.0 2.2
7.0 (44.6°F) 483.3 110.1 3.6 458.1 120.2 3.2 434.2 129.9 2.8 406.4 139.6 2.5 380.3 149.4 2.2
8.0 (46.4°F) 497.0 111.4 3.7 471.0 121.7 3.3 446.4 131.7 2.9 417.9 141.7 2.5 391.1 151.9 2.2
9.0 (48.2°F) 509.3 112.6 3.8 482.7 123.2 3.3 457.5 133.6 2.9 428.3 143.8 2.6 401.1 154.4 2.3
10.0 (50.0°F) 527.5 113.9 3.9 500.8 124.8 3.4 473.3 135.3 3.0 445.0 146.0 2.6 417.0 156.9 2.3
5.0 (41.0°F) 482.7 117.9 3.6 458.3 128.1 3.2 432.3 138.2 2.8 405.2 148.3 2.5 380.1 158.3 2.2
6.0 (42.8°F) 496.3 119.3 3.6 471.8 129.9 3.2 445.9 140.2 2.8 418.1 150.7 2.5 391.6 161.1 2.2
7.0 (44.6°F) 512.3 120.7 3.7 485.6 131.7 3.2 460.3 142.3 2.9 430.8 153.0 2.5 403.2 163.7 2.2
8.0 (46.4°F) 526.9 122.1 3.8 499.3 133.3 3.3 473.3 144.3 2.9 443.0 155.3 2.6 414.7 166.4 2.2
9.0 (48.2°F) 540.0 123.3 3.8 511.7 135.0 3.4 485.0 146.3 2.9 454.1 157.6 2.6 425.3 169.2 2.3
10.0 (50.0°F) 559.2 124.7 3.9 531.0 136.8 3.4 501.8 148.3 3.0 471.7 160.0 2.6 442.1 171.9 2.3
5.0 (41.0°F) 497.9 124.6 3.5 472.8 135.5 3.1 446.0 146.1 2.7 418.0 156.8 2.4 392.1 167.4 2.1
6.0 (42.8°F) 512.0 126.1 3.6 486.7 137.4 3.2 460.0 148.3 2.8 431.4 159.3 2.4 404.0 170.3 2.2
7.0 (44.6°F) 528.5 127.6 3.6 501.0 139.2 3.2 474.9 150.4 2.8 444.5 161.7 2.5 416.0 173.1 2.2
8.0 (46.4°F) 543.5 129.0 3.7 515.1 141.0 3.3 488.3 152.6 2.9 457.0 164.2 2.5 427.8 176.0 2.2
9.0 (48.2°F) 557.0 130.4 3.8 527.9 142.7 3.3 500.3 154.7 2.9 468.5 166.6 2.6 438.7 178.9 2.3
10.0 (50.0°F) 576.9 131.9 3.9 547.8 144.6 3.4 517.7 156.7 3.0 486.7 169.2 2.6 456.1 181.7 2.3
5.0 (41.0°F) 520.1 130.8 3.4 493.9 142.2 3.0 465.9 153.3 2.7 436.7 164.6 2.4 409.6 175.6 2.1
6.0 (42.8°F) 534.9 132.3 3.5 508.5 144.2 3.1 480.6 155.6 2.7 450.6 167.2 2.4 422.0 178.7 2.1
7.0 (44.6°F) 552.1 133.9 3.6 523.3 146.1 3.2 496.0 157.9 2.8 464.3 169.7 2.5 434.5 181.7 2.2
8.0 (46.4°F) 567.8 135.4 3.7 538.1 147.9 3.3 510.0 160.1 2.9 477.4 172.3 2.5 446.9 184.7 2.2
9.0 (48.2°F) 581.9 136.9 3.8 551.4 149.8 3.3 522.7 162.4 2.9 489.4 174.8 2.6 458.3 187.8 2.3
10.0 (50.0°F) 602.7 138.4 3.9 572.2 151.8 3.4 540.8 164.5 3.0 508.4 177.5 2.6 476.4 190.7 2.3
5.0 (41.0°F) 533.4 133.4 3.5 506.4 145.0 3.1 477.7 156.4 2.7 447.8 167.8 2.4 420.1 179.1 2.1
6.0 (42.8°F) 548.5 134.9 3.6 521.4 147.0 3.2 492.8 158.7 2.8 462.1 170.5 2.4 432.8 182.2 2.2
7.0 (44.6°F) 566.2 136.5 3.7 536.7 149.0 3.2 508.7 161.0 2.8 476.1 173.1 2.5 445.6 185.2 2.2
8.0 (46.4°F) 582.2 138.1 3.7 551.8 150.8 3.3 523.0 163.3 2.9 489.6 175.7 2.5 458.2 188.3 2.2
9.0 (48.2°F) 596.7 139.5 3.8 565.5 152.7 3.3 536.0 165.6 2.9 501.8 178.3 2.6 470.0 191.4 2.3
10.0 (50.0°F) 618.0 141.1 3.9 586.8 154.7 3.4 554.5 167.7 3.0 521.3 181.0 2.6 488.6 194.5 2.3
5.0 (41.0°F) 556.7 139.6 3.5 528.6 151.7 3.1 498.6 163.6 2.7 467.3 175.6 2.4 438.4 187.4 2.1
6.0 (42.8°F) 572.5 141.2 3.6 544.2 153.8 3.2 514.3 166.0 2.8 482.3 178.4 2.4 451.7 190.7 2.2
7.0 (44.6°F) 590.9 142.9 3.7 560.1 155.9 3.2 530.9 168.5 2.8 496.9 181.1 2.5 465.1 193.9 2.2
8.0 (46.4°F) 607.7 144.5 3.7 575.9 157.9 3.3 545.9 170.9 2.9 511.0 183.9 2.5 478.3 197.1 2.2
9.0 (48.2°F) 622.8 146.0 3.8 590.2 159.8 3.3 559.4 173.3 2.9 523.7 186.6 2.6 490.5 200.4 2.3
10.0 (50.0°F) 645.0 147.7 3.9 612.4 162.0 3.4 578.8 175.5 3.0 544.1 189.5 2.6 509.9 203.5 2.3
25°C (77°F) 30°C (86°F) 35°C (95°F) 40°C (104°F) 45°C (113°F)
Capac.kWPWR
kWi
COP
Capac.kWPWR
kWi
COP
Capac.kWPWR
kWi
COP
Capac.kWPWR
kWi
COP
Capac.kWPWR
kWi
COP
Product Manual ALR2-3 ALR 110F – 150F 13
Part Load Data
Table 6, Part Load Data R-22,
Unit
% Load
Size
100.00 110.9 135.6 9.8
110F 75.00 83.5 79.9 12.5 14.0
50.00 55.6 44.9 14.9
25.00 27.9 21.1 15.9
100.00 122.2 152.8 9.6
120F 75.00 92.4 89.9 12.3 14.0
50.00 61.6 48.7 15.2
25.00 30.8 24.1 15.3
100.00 129.6 161.0 9.7
130F 75.00 97.2 95.9 12.2 13.6
50.00 64.8 54.0 14.4
25.00 32.4 24.8 15.7
100.00 133.7 168.0 9.6
135F 75.00 100.3 100.3 12.0 13.4
50.00 66.8 55.3 14.5
25.00 33.4 28.2 14.2
100.00 139.7 174.8 9.6
140F 75.00 104.7 102.5 12.3 13.7
50.00 69.8 56.9 14.7
25.00 34.9 27.0 15.5
100.00 143.2 178.2 9.6
145F 75.00 107.5 104.4 12.4 13.5
50.00 71.6 61.3 14.0
25.00 35.9 27.7 15.5
100.00 149.5 186.0 9.6
150F 75.00 112.1 109.4 12.3 13.4
50.00 74.7 64.4 13.9
25.00 37.4 29.4 15.3
Capacity
Tons
Unit Power
kW
EER IPLV
14 ALR 110F – 150F Product Manual ALR2-3
Pressure Drops
Figure 5, 110F through 150F Evaporator Pressure Drop Curve
ALR 110
ALR 145 - 150
ALR 120 - 140
Minimum/Maximum Flow Rates
ALR Unit
Size
110
120
130
135
140
145
150
Minimum Flow
gpm (l/s)
165 (10.4) 6.0 (17.9) 435 (27.4) 39.0 (116.0)
180 (11.4) 4.3 (12.8) 480 (30.3) 30.5 (90.0)
195 (12.3) 5.1 (15.2) 520 (32.8) 37.5 (111.8)
200 (12.6) 5.3 (15.8) 535 (33.8) 40.0 (119.2)
205 (13.0) 5.8 (17.3) 550 (34.7) 42.0 (125.2)
215 (13.6) 4.3 (12.8) 570 (36.0) 29.5 (87.9)
220 (13.9) 4.5 (13.4) 590 (37.2) 31.0 (92.4)
Pressure Drop
ft. (kPa)
Maximum Flow
gpm (l/s)
Pressure Drop
ft. (kPa)
Product Manual ALR2-3 ALR 110F – 150F 15
Sound Data
Table 7, ALR 110F - 150F, Sound Pressure
ALR
Unit Size
110 65 68 69 66 62 60 57 53 68.5
120
130
135
140
145
150
NOTES
1. Based on Uniform Spherical Radiation, Q=1
2. Sound pressure at 30 feet from unit.
63 hz 125 hz 250 hz 500 hz 1000 hz 2000 hz 4000 hz 8000 hz
65 68 69 66 62 60 57 53 68.5
66 69 70 67 63 61 58 54 69.5
66 69 70 67 63 61 58 54 69.5
67 70 71 68 63 61 59 54 70.0
67 70 71 68 63 61 59 54 70.0
68 71 72 69 64 62 59 55 71.0
Octave Band Sound Pressure Levels Per ARI Standard 370 (dB)
Table 8, ALR 110F - 150F, Sound Power
ALR
Unit Size
110 95 98 99 96 92 90 87 83 98.5
120
130
135
140
145
150
Per ARI 370 - Sound Rating of Large Outdoor Refrigerating and Air-Conditioning Equipment
63 hz 125 hz 250 hz 500 hz 1000 hz 2000 hz 4000 hz 8000 hz
95 98 99 96 92 90 87 83 98.5
96 99 100 97 93 91 89 84 99.5
96 99 100 97 93 91 89 84 99.5
97 100 101 98 93 91 89 84 100.0
97 100 101 98 93 91 89 84 100.0
98 101 102 99 94 92 89 85 101.0
Octave Band Sound Power Levels Per ARI Standard 370 (dB)
Overall "A"
Weighted
Overall "A"
Weighted
Sound levels can be as important as unit cost and efficiency, and must be addressed before the start
of any development program. Efforts by McQuay Design Engineers to design chillers that are
sensitive to the sound requirements of the market have paid off.
Background Information
Sound is a vibration in an elastic medium and is essentially a pressure and particle displacement
phenomena. A vibrating body produces compression waves and as the waves are emitted from the
vibrating body, molecules are ultimately compressed. These waves are transmitted through gases,
liquids, or solids-anything that is elastic or viscous.
The sound data provided in this section is presented with both sound pressure (Q=1 and 30 feet from
unit) and sound power levels. Sound power is the total sound energy radiated by a source per unit of
time integrated over the surface through which the sound is radiated. Sound power is a calculated
quantity and cannot be measured directly like sound pressure. Sound power is not dependent on the
surrounding environment or distance from the source, as is sound pressure.
Sound pressure varies with the distance from the source and is dependent on its surroundings. For
example, a brick wall located 10 feet from a unit will affect the sound pressure measurements differently
than a brick wall at 20 feet. Sound pressure is measured in decibels (dB), which is a dimensionless
ratio (on a logarithmic scale) between measured sound pressure and a reference sound pressure level.
Sound Pressure Levels - Full Load
Sound pressure tables give the overall "A" weighted sound pressure levels which are considered
typical of what may be measured in a free field with a hand held sound meter, in the absence of any
nearby reflective surfaces. The sound pressure levels (Table 7) are measured at 30 feet from the side
of the unit at 100% unit load, no reflecting walls Q=1, and ARI conditions, 95°F (35°C) ambient air
temperature and 54/44°F (12/7°C) evaporator water temperatures for air-cooled units.
16 ALR 110F – 150F Product Manual ALR2-3
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