McQuay ALR 035E Installation Manual
Installation Manual
SeasonPak
Packaged Air-Cooled Water Chiller
Models ALR 032E Through 185E
IM 676
Group: Chiller
Part Number: 594920Y
Date: July 1996
Supersedes: None
© 1996 McQuay International
Table of Contents
Introduction........................................................................................................... 3
General Description .........................................................................................................................3
Inspection........................................................................................................................................3
Installation ......................................................................................................................................3
Handling .........................................................................................................................................3
Location ..........................................................................................................................................4
Service Access.................................................................................................................................5
Vibration Isolators ........................................................................................................................... 6
Water Piping....................................................................................................................................7
Flow Switch.....................................................................................................................................8
Water Connections...........................................................................................................................8
Refrigerant Charge .......................................................................................................................... 9
Glycol Solutions ..............................................................................................................................9
Evaporator Water Flow and Pressure Drop.....................................................................................10
Physical Data........................................................................................................12
Electrical Data......................................................................................................18
Field Wiring.................................................................................................................................. 18
Dimensional Data.................................................................................................36
Unit Layout and Principles of Operation............................................................38
Control Center ...............................................................................................................................38
Start-up and Shutdown.......................................................................................40
Pre Start-up ...................................................................................................................................40
Start-up .........................................................................................................................................40
Sequence of Operation...................................................................................................................41
2 IM 676
Introduction
General Description
McQuay SeasonPak air-cooled water chillers are complete, self-contained automatic refrigerating
units. Every unit is completely assembled, factory wired, charged, and tested. Each unit consists of
twin air-cooled condensers with integral subcooler sections, multiple accessible hermetic
compressors, replaceable tube dual circuit shell-and-tube evaporator, and complete refrigerant
piping. Liquid line components include manual liquid line shutoff valves, sight-glass/moisture
indicators, solenoid valves, and double diaphragm hydraulic element thermal expansion valves.
Other features include compressor crankcase heaters, an evaporator heater for chilled water freeze
protection, limited pumpdown during “on” or “off” periods, compressor lead-lag switch to alternate
the compressor starting sequence, and sequenced starting of compressors.
automatic operation. Condenser fan motors are fused in all three phases and started by their own
three-pole contactors. Compressors are not fused but may be protected by optional circuit breakers,
or by a field installed fused disconnect.
Inspection
Check all items carefully against the bill of lading. Inspect all units for damage upon arrival.
Report shipping damage and file a claim with the carrier. Check the unit name plate before
unloading, making certain it agrees with the power supply available. McQuay is not responsible for
physical damage after unit leaves the factory.
The electrical control center includes all safety and operating controls necessary for dependable
Note: Unit shipping and operating weights are available in the Physical Data tables
beginning on page 12.
Installation
Note: Installation is to be performed by qualified personnel who are familiar with local
codes and regulations.
WARNING
Sharp edges and coil surfaces are a potential hazard. Avoid contact with them.
Handling
Be careful to avoid rough handling of the unit. Do not push or pull the unit from anything other
than the base. Block the pushing vehicle away from the unit to prevent damage to the sheet metal
cabinet and end frame (see Figure 1).
To lift the unit, 2 1/2" (64mm) diameter lifting holes are provided in the base of the unit.
Arrange spreader bars and cables to prevent damage to the condenser coils or cabinet (see Figure 2).
IM 676 3
Figure 1, Suggested pushing arrangement
control box location)
Figure 2, Suggested lifting arrangement
Spreader bars
recommended (Use
Caution)
Blocking required
across full width
NOTE: Number of fans can vary
from this diagram. Lifting method
remains the same.
Must use these rigging
holes. (Be aware of
Location
Unit Placement
ALR units are for outdoor applications and can be mounted on a roof or ground level. Set units on a
solid and level foundation. For roof mounted applications, install the unit on a steel channel or Ibeam frame to support the unit above the roof. For ground level applications, install the unit on a
substantial base that will not settle. A one piece concrete slab with footings extended below the frost
line is recommended. Be sure the foundation is level (within 1/2” [13 mm] over its length and
width). The foundation must support the operating weights listed in the Physical Data tables
beginning on page 12.
On ground level applications protect fins against vandalism using the optional coil guards or by
erecting a screen fence. The fence must allow free flow of air to the condenser coil for proper unit
operation.
4 IM 676
Clearances
air inlet
The flow of air to and from the condenser coil must not be limited. Restricting air flow or allowing
air recirculation will result in a decrease in unit performance and efficiency. There must be no
obstruction above the unit that would deflect discharge air downward where it could be recirculated
back to the inlet of the condenser coil. The condenser fans are propeller type and will not operate
with ductwork on the fan outlet.
Install the unit with enough side clearance for air entrance to the coil and for servicing.
Provide service access to the evaporator, compressors, electrical control panel and piping
components as shown in Figure 3.
Do not allow debris to accumulate near the unit. Air movement may draw debris into the
condenser coil causing air starvation. Give special consideration to low ambient operation where
snow can accumulate. Keep condenser coils and fan discharge free of snow or other obstructions to
permit adequate airflow.
Figure 3, Clearance requirements
5 ft. (1524mm) Clearance for
air inlet
4 Ft.
(1220mm)
clearance for
5 Ft. (1524mm) clearance for
ALR Unit Size Minimum "X" Dimension
032E -075E 8 ft (2438 mm)
080E - 185E 10 ft (3048 mm)
"X" clearance
for evaporator
tube removal
Sound Isolation
The ultra-low sound levels of the ALR reciprocating
chiller is suitable for most applications. When
additional sound reduction is necessary, locate the
unit away from sound sensitive areas. Avoid
locations beneath windows or between structures
where normal operating sounds may be
objectionable. Reduce structurally transmitted sound
by isolating water lines, electrical conduit and the
unit itself. Use wall sleeves and rubber isolated
piping hangers to reduce transmission of water or
pump noise into occupied spaces. Use flexible
electrical conduit to isolate sound through electrical
conduit. Spring isolators are effective in reducing the low amplitude sound generated by
reciprocating compressors and for unit isolation in sound sensitive areas.
Service Access
Each end of the unit must be accessible after installation for periodic service. Compressors, filterdriers, and manual liquid line shutoff valves are accessible on each side of the unit adjacent to the
control box. High pressure, low pressure, and motor protector controls are on the compressor.
Freezestats and cooler barrel thermostats are near the cooler. Most other operational, safety and
starting controls are located in the unit control box.
The condenser fan and motors can be removed from the top of the unit.
IM 676 5
Vibration Isolators
Vibration isolators are recommended for all roof mounted installations or wherever vibration
transmission is a consideration.
Table 1 lists isolator loads and type. Table 2 lists spring isolator part numbers for all unit sizes. See
Dimensional Data beginning on page 36 for dimensions required to secure each isolator to the
mounting surface.
Table 1, Isolator loads and type
ALR ISOLATOR LOADS AND TYPE FOR EACH MOUNTING LOCATION
UNIT R S T
SIZE TYPE LB. KG TYPE LB. KG TYPE LB. KG
032E CP-1-28 669 303 CP-1-28 677 307 CP-1-28 677 307
035E CP-1-28 673 305 CP-1-28 680 308 CP-1-28 680 308
040E CP-1-28 692 314 CP-1-28 699 317 CP-1-28 699 317
045E CP-1-31 804 365 CP-1-31 794 360 CP-1-31 785 356
050E CP-1-31 822 373 CP-1-31 798 362 CP-1-31 800 363
055E CP-1-31 827 375 CP-1-31 819 371 CP-1-31 809 367
060E CP-1-32 850 386 CP-1-32 841 381 CP-1-32 835 379
065E CP-1-32 868 394 CP-1-32 858 389 CP-1-32 848 385
070E CP-1-32 1040 472 CP-1-32 998 453 CP-1-32 912 414
075E CP-1-32 1042 473 CP-1-32 1019 462 CP-1-32 914 415
080E CP-2-28 1110 503 CP-2-28 1122 509 CP-2-31 1296 588
085E CP-2-28 1180 535 CP-2-28 1186 538 CP-2-31 1474 669
090E CP-2-28 1182 536 CP-2-28 1186 538 CP-2-31 1475 669
100E CP-2-28 1193 541 CP-2-28 1214 551 CP-2-31 1508 684
110E CP-2-28 1339 607 CP-2-28 1364 619 CP-2-31 1697 770
120E CP-2-31 1362 618 CP-2-31 1490 676 CP-2-32 1748 793
130E CP-2-31 1492 677 CP-2-32 1570 712 CP-2-32 1838 834
135E CP-2-31 1506 683 CP-2-32 1670 758 CP-2-32 1904 864
140E CP-2-31 1556 706 CP-2-32 1752 795 CP-2-32 1912 867
145E CP-2-31 1572 713 CP-2-32 1680 762 CP-4-27 2093 949
150E CP-2-32 1601 726 CP-2-32 1704 773 CP-4-27 2120 962
160E CP-4-27 1948 884 CP-2-32 1962 890 CP-2-32 1848 838
170E CP-4-27 2052 931 CP-2-32 2002 908 CP-2-32 1849 839
180E CP-4-27 2052 931 CP-2-32 2002 908 CP-2-32 1849 839
185E CP-4-27 2052 931 CP-2-32 2002 908 CP-2-32 1849 839
NOTE: Two of each isolator type is required for a total of six per unit.
Table 2, Spring flex isolator part numbers
TYPE COLOR McQuay Each
Part No. Lb. KG
CP1-25 Red 477927A-25 450 204
CP1-26 Purple 477927A-26 600 272
CP1-27 Orange 477927A-27 750 340
CP1-28 Green 477927A-28 900 408
CP1-31 Gray 477927A-31 1100 499
CP1-32 White 477927A-32 1300 590
CP2-25 Red 477929A-25 900 408
CP2-26 Purple 477929A-26 1200 544
CP2-27 Orange 477929A-27 1500 681
CP2-28 Green 477929A-28 1800 817
CP2-31 Gray 477929A-31 2200 998
CP2-32 White 477929A-32 2600 1180
CP4-26 Purple 580513A-26 2400 1089
CP4-27 Orange 580513A-27 3000 1361
CP4-28 Green 580513A-28 3600 1633
CP4-31 Gray 580513A-31 4400 1996
CP4-32 White 580513A-32 5200 2359
6 IM 676
Max. Load
Water Piping
Local authorities can supply the installer with the proper building and safety codes required for safe
and proper installation.
Install piping with minimum bends and changes in elevation to minimize pressure drop.
Consider the following when installing water piping:
1. Vibration eliminators to reduce vibration and noise transmission to the building.
2. Shutoff valves to isolate the unit from the piping system during unit servicing.
3. Manual or automatic air vent valves at the high points of the system. Install drains at the
lowest points in the system.
4. A means of maintaining adequate system water pressure (expansion tank or regulating valve).
5. Temperature and pressure indicators located at the unit to aid in unit servicing.
6. A strainer or other means of removing foreign matter from the water before it enters the pump.
Place the strainer far enough upstream to prevent cavitation at the pump inlet (consult pump
manufacturer for recommendations). The use of a strainer will prolong pump life and keep
system performance up.
7. Place a strainer in the water line just before the inlet of the evaporator. This will help prevent
foreign material from entering and decreasing the performance of the evaporator.
CAUTION
If separate disconnect is used for the 110V supply to the evaporator heating cable, mark
the disconnect clearly to ensure disconnect is not accidentally shut off during cold seasons.
8. The shell-and-tube evaporator has a thermostat and heating cable to prevent freeze-up down to -
20°F (-29°C). It is suggested that the heating cable be wired to a separate 110V supply circuit.
As shipped from the factory, the heating cable is wired to the control circuit. All water piping
to the unit must also be protected to prevent freezing.
9. If the unit is used as a replacement chiller on a previously existing piping system, flush the
system thoroughly before unit installation. Regular water analysis and chemical water
treatment on the evaporator is recommended immediately at equipment start-up.
10. The total water volume in the system should be sufficient to prevent frequent “on-off” cycling.
Turnover rate should not be less than 15 minutes for normal variable cooling loads. Turnover
rate for process cooling or a constant load,should not be less than 6 minutes.
11. When glycol is added to the water system for freeze protection, the refrigerant suction pressure
will be lower, cooling performance less, and water side pressure drop greater. If the percentage
of glycol is high, or if propylene is used instead of ethylene glycol, the added pressure drop and
loss of performance could be substantial. Reset the freezestat and low leaving water alarm
temperatures. The freezestat is factory set to default at 36°F (2.2°C). Reset the freezestat
setting to approximately 4 to 5 degress F (2.3 to 2.8 degress C) below the leaving chilled water
setpoint temperature. See the section titled “Glycol Solutions” for additional information
concerning glycol.
12. Perform a preliminary leak check before insulating the piping and filling the system.
13. Piping insulation should include a vapor barrier to prevent condensation and possible damage
to the building structure.
IM 676 7
Figure 4, Typical field evaporator water piping
Vent
Outlet
Valved
pressure
gauge
Vibration
Eliminator
Flow
Switch
Balancing
valve
Gate valve
Protect all field piping
against freezing
Drain
Vibration
Eliminator
Water
strainer
Gate valve
Flow Switch
Mount a water flow switch in either the entering or leaving water line to shut down the unit when
water flow is interrupted.
A flow switch is available from McQuay (part number 00175033-00). It is a “paddle” type
switch and adaptable to any pipe size from 3” (76mm) to 8” (203mm) nominal. Certain minimum
flow rates are required to close the switch and are listed in Table 3. Installation should be as shown
in Figure 5. Connect the normally open contacts of the flow switch in the unit control center at
terminals 5 and 6. There is also a set of normally closed contacts on the switch that can be used for
an indicator light or an alarm to indicate when a “no flow” condition exists. Freeze protect any flow
switch that is installed outdoors.
NOTE: Differential pressure switches are not recommended for outdoor installation.
Table 3, Flow switch minimum flow rates
NOMINAL PIPE SIZE MINIMUM REQUIRED FLOW TO
INCHES (MM) ACTIVATE SWITCH - GPM (L/S)
1 (25.4) 6.00 (0.38)
11/4 (31.8) 9.80 (0.62)
11/2 (38.1) 12.70 (0.80)
2 (50.8) 18.80 (1.20)
21/2 (63.50 24.30 (1.50)
3 (76.20 30.00 (1.90)
4 (101.6) 39.70 (2.50)
5 (127.0) 58.70 (3.70)
6 (152.4) 79.20 (5.00)
Figure 5, Flow switch installation
Flow direction
marked on switch
1" (25mm) NPT flow
switch connection
Tee
5" (127mm) pipe dia.
Min. after switch
5" (127mm) pipe dia.
Min. before switch
Water Connections
Bring water piping to the cooler from the bottom of the unit or through the side between the vertical
supports.
8 IM 676
Note: The procedure
does not specify the
type of glycol. Use
the derate factors
found in Table 4 for
corrections when
using ethylene glycol
and those in Table 5
for propylene glycol.
Note: On units sizes 160E through 185E there is a diagonal bracket off of a vertical support
which will interfere with the water connection if brought in from the side. This brace can be
removed, but only after the unit is in place.
Refrigerant Charge
All units are designed for use with HCFC-22 and other refrigerants. See nameplate for specific
refrigerant used. Units are shipped with an operating charge. The operating charge
(using HCFC-22) for each unit is shown in the Physical Data tables beginning on page 12.
Glycol Solutions
The system glycol capacity, glycol solution flow rate in GPM, and pressure drop through the cooler
may be calculated using the following formulas and table.
1. Capacity -- Find the reduced capacity by multiplying the chiller’s capacity with water by the
capacity correction factor C.
2. Flow -- To determine evaporator gpm (or Delta-T) knowing Delta-T (or gpm) and capacity:
×
Glycol GPM (from table)=
24 capacity glycol
Delta T
For Metric Applications -- To determine evaporator L/s (or Delta-T) knowing Delta-T (or L/s)
and kW:
Glycol L / s (from table)=
4. 18
kW
× −
Delta T
3. Pressure drop -- To determine pressure drop through the evaporator, when using glycol, enter
the water pressure drop curve on page 11 at the actual glycol GPM. Multiply the water pressure
drop by PD correction factor from Table 4 or Table 5 to obtain corrected glycol pressure drop.
4. To determine the unit's power consumption when using glycol, multiply the water system kW by
factor kW.
Test coolant with a clean, accurate glycol solution hydrometer (similar to that found in service
stations) to determine the freezing point. Obtain percent glycol from the freezing point table below.
On glycol applications it is normally recommended by the supplier that a minimum of 25% solution
by weight be used for protection against corrosion.
( )
−
×
Flow
×
G
IM 676 9
CAUTION
Do not use an automotive grade antifreeze. Industrial grade glycols must be used.
Automotive antifreeze contains inhibitors which will cause plating on the copper tubes
within the chiller evaporator. The type and handling of glycol used must be consistent with
local codes.
Table 4, Ethylene glycol
% Freeze Point
E.G. °F °C Cap. kW GPM PD
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 5, Propylene glycol
% Freeze Point
P.G. °F °C Cap. kW GPM PD
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
Table 6, Capacity and power derates
Chilled Water Fouling Factor
ALTITUDE °F °C Cap. kW Cap. kW Cap. kW
SEA 10 5.6 1.000 1.000 0.975 0.986 0.919 0.939
LEVEL 12 6.7 1.005 1.002 0.980 0.989 0.923 0.941
2000 feet 12 6.7 0.992 1.011 0.970 0.998 0.914 0.949
4000 feet 12 6.7 0.978 1.025 0.956 1.008 0.904 0.958
6000 feet 12 6.7 0.963 1.034 0.942 1.017 0.895 0.966
Delta-T 0.00025 (0.044) 0.00075 (0.132) 0.00175 (0.308)
6 3.3 0.992 0.995 0.996 0.982 0.911 0.935
8 4.4 0.995 0.997 0.969 0.984 0.914 0.937
14 6.8 1.010 1.005 0.985 0.991 0.928 0.943
16 8.9 1.014 1.007 0.989 0.993 0.930 0.944
6 3.3 0.978 1.005 0.957 0.990 0.903 0.943
8 4.4 0.982 1.007 0.961 0.993 0.905 0.945
10 5.6 0.986 1.009 0.965 0.995 0.909 0.947
14 6.8 0.997 1.014 0.973 1.001 0.919 0.952
16 8.9 1.000 1.016 0.975 1.002 0.921 0.953
6 3.3 0.966 1.016 0.944 0.999 0.894 0.951
8 4.4 0.969 1.018 0.947 1.001 0.896 0.953
10 5.6 0.973 1.021 0.952 1.005 0.900 0.956
14 6.8 0.982 1.027 0.959 1.011 0.909 0.960
16 8.9 0.986 1.028 0.961 1.015 0.911 0.961
6 3.3 0.953 1.025 0.930 1.009 0.884 0.961
8 4.4 0.955 1.028 0.934 1.011 0.887 0.962
10 5.6 0.959 1.031 0.939 1.013 0.890 0.964
14 6.8 0.968 1.036 0.946 1.020 0.899 0.968
16 8.9 0.972 1.037 0.949 1.024 0.902 0.969
10 IM 676
Evaporator Water Flow and Pressure Drop
Evaporator flow rate must fall between the minimum and maximum values shown in the evaporator
pressure drop curve. Flow rates below the minimum values will result in laminar flow which will
reduce efficiency, cause erratic operation of the expansion valve and could cause low temperature
cutouts. Flow rates exceeding the maximum values can cause erosion on the evaporator water
connections and tubes.
Measure the chilled water pressure drop through the evaporator at field installed pressure taps.
It is important not to include the effect of valves or strainers in these readings.
Varying chilled water flow through the evaporator while the compressor(s) are operating is not
recommended.
Figure 6, Evaporator water pressure drop curve
IM 676 11
Physical Data
Table 7 , Physical data ALR032E Through 050E
PHYSICAL DATA ALR MODEL NUMBER
BASIC DATA Ckt.1 Ckt.2 Ckt.1 Ckt.2 Ckt.1 Ckt.2 Ckt.1 Ckt.2 Ckt.1 Ckt.2
Unit Capacity @ ARI Conditions (1),
Tons (kW)
Number Of Refrigerant Circuits 2 2 2 2 2
Unit Operating Charge, R-22, lb. 20 20 23 23 30 30 32 32 32 32
Unit Operating Charge, R-22, (kg) (9.1) (9.1) (11.3) (11.3) (13.6) (13.6) (13.6) (13.6) (13.6) (13.6)
Cabinet Dimensions, LxWxH, In. 123 x 83 x 59 123 x 83 x 59 123 x 83 x 59 176 x 83 x 59 176 x 83 x 59
Cabinet Dimensions, LxWxH, (mm) (3124 x 2108 x 1499) (3124 x 2108 x 1499) (3124 x 2108 x 1499) (4470 x 2108 x 1499) (4470 x 2108 x 1499)
Unit Operating Weight, Lb. (kg) 4045 (1835) 4065(1853) 4180 (1896) 4765 (2162) 4840 (2196)
Unit Shipping Weight, Lb. (kg) 3895 (1767) 3915 (1785) 4030 (1828) 4615 (2094) 4690 (2127)
Add'l Weight If Copper Finned Coils, Lb. (kg) 270 (122) 270 (122) 370 (168) 410 (186) 410 (186)
COMPRESSORS
Type Semi-Hermetic Semi-Hermetic Semi-Hermetic Semi-Hermetic Semi-Hermetic
Nominal Horsepower 20 20 20 22 25 25 25 30 30 30
Number Of Cylinders Per Compressor 4 4 4 4 4 4 4 6 4 6
Oil Charge Per Compressor, Oz. 130 130 130 130 130 130 130 140 140 140
Oil Charge Per Compressor, (g) (3686) (3686) (3686) (3686) (3686) (3686) (3686) (3969) (3969) (3969)
CAPACITY REDUCTION STEPS - PERCENT OF COMPRESSOR DISPLACEMENT
Standard Staging - Circuit #1 in Lead
Standard 4 Stages 0-25-50-75-100 0-22-50-72-100 0-25-50-75-100 0-21-60-81-100 0-23-59-82-100
Standard Staging - Circuit #2 in Lead
Standard 4 Stages 0-25-50-75-100 0-28-50-78-100 0-25-50-75-100 0-39-60-79-100 0-36-59-77-100
Optional Staging - Circuit #1 in Lead
Optional 6 Stages N/A N/A N/A N/A N/A
032E 035E 040E 045E 050E
32.5 (114.3) 34.6 (121.7) 40.4 (142.0) 45.9 (161.4) 50.8 (178.6)
Optional Staging - Circuit #2 in Lead
Optional 6 Stages N/A N/A N/A N/A N/A
CONDENSERS - HIGH EFFICIENCY FIN AND TUBE TYPE WITH INTEGRAL SUBCOOLING
Maximum Relief Valve Pressure Setting, psig
CONDENSER FANS - DIRECT DRIVE PROPELLER TYPE
Number Of Fans - Fan Diameter, In. (mm) 4 - 26 (660) 4 - 26 (660) 4 - 26 (660) 6 - 26 (660) 6 - 26 (660)
DIRECT EXPANSION EVAPORATOR - BAFFLED SHELL AND THRU-TUBE
Maximum Refrigerant Working Pressure, psig
Water Inlet / Outlet Victaulic Connections,
NOTE:
1. Nominal capacity based on 95F ambient air and 54F/44F water range.
Coil Face Area,Sq. Ft. 28.3 28.3 28.3 28.3 28.3 28.3 43.1 43.1 43.1 43.1
Coil Face Area, (M2) (2.6) (2.6) (2.6) (2.6) (2.6) (2.6) (4) (4) (4) (4)
Finned Height x Finned Length, In. 40 x 102 40 x 102 40 x 102 40 x 102 40 x 102 40 x 102 40 x 155 40 x 155 40 x 155 40 x 155
Finned Height x Finned Length, (mm) (1016 x
Fins Per Inch x Rows Deep 16 x 2 16 x 2 16 x 2 16 x 2 16 x 3 16 x 3 16 x 2 16 x 2 16 x 2 16 x 2
(kPa)
Number Of Motors - HP (kW) 4 - 1.0 (.7) 4 - 1.0 (.7) 4 - 1.0 (.7) 6 - 1.0 (.7) 6 - 1.0 (.7)
Fan And Motor RPM, 60/50Hz 1100/915 1100/915 1100/915 1100/915 1100/915
60 Hz Fan Tip Speed, FPM 7760 7760 7760 7760 7760
60 Hz Total Unit Airflow, CFM 28400 29840 26980 42000 42000
Diameter, in. - Length, Ft. 10 - 08 10 - 08 10 - 08 10 - 08 12 - 08
Diameter, (mm) - Length, (mm) (254 - 2439) (254 - 2439) (254 - 2439) (254 - 2439) (305 - 2439)
Water Volume, Gallons, (L) 17.90 (67.8) 17.90 (67.8) 17.90 (67.8) 17.90 (67.8) 24.30 (92)
Maximum Water Pressure, psig (kPa) 175 (1207) 175 (1207) 175 (1207) 175 (1207) 175 (1207)
(kPa)
In. (mm)
Drain - NPT int, In. (mm) .375 (9.5) .375 (9.5) .375 (9.5) .375 (9.5) .375 (9.5)
Vent - NPT int, In. (mm) .375 (9.5) .375 (9.5) .375 (9.5) .375 (9.5) .375 (9.5)
2591)
(3103)
(1016 x
2591)
450
(3103)
225 (1552) 225 (1552) 225 (1552) 225 (1552) 225 (1552)
4 (101.6) 4 (101.6) 4 (101.6) 4 (101.6) 5 (127)
450
(1016 x
2591)
450
(3103)
(1016 x
2591)
450
(3103)
(1016 x
2591)
450
(3103)
(1016 x
2591)
450
(3103)
(1016 x
3937)
450
(3103)
(1016 x
3937)
450
(3103)
(1016 x
3937)
450
(3103)
(1016 x
3937)
450
(3103)
12 IM 676
Table 8, Physical data ALR055E Through 075E
PHYSICAL DATA ALR MODEL NUMBER
BASIC DATA Ckt.1 Ckt.2 Ckt.1 Ckt.2 Ckt.1 Ckt.2 Ckt.1 Ckt.2 Ckt.1 Ckt.2
Unit Capacity @ ARI Conditions (1), Tons (kW) 54.6 (192.0) 59.6 (209.6) 64.0 (225.0) 69.0 (242.6) 72.2 (253.9)
Number Of Refrigerant Circuits 2 2 2 2 2
Unit Operating Charge, R-22, Lb. 45 45 45 45 45 45 58 58 60 60
Unit Operating Charge, R-22, (kg) (15.9) (15.9) (15.9) (15.9) (18.1) (18.1) (18.1) (18.1) (20.4) (20.4)
Cabinet Dimensions, LxWxH, In. 176 x 83 x 59 176 x 83 x 59 176 x 83 x 59 229 x 83 x 59 229 x 83 x 59
Cabinet Dimensions, LxWxH, (mm) (4470 x 2108 x 1499) (4470 x 2108 x 1499) (4470 x 2108 x 1499) (5817 x 2108 x 1499) (5817 x 2108 x 1499)
Unit Operating Weight, Lb. (kg) 4910 (2228) 5052 (2292) 5148 (2335) 5900 (2677) 5950 (2700)
Unit Shipping Weight, Lb. (kg) 4760 (2160) 4850 (2200) 4946 (2244) 5635 (2556) 5685 (2579)
Add'l Weight If Copper Finned Coils, Lb. (kg) 410 (186) 615 (279) 615 (279) 825 (374) 825 (374)
COMPRESSORS
Type Semi-Hermetic Semi-Hermetic Semi-Hermetic Semi-Hermetic Semi-Hermetic
Nominal Horsepower 30 30 30 35 35 35 35 40 40 40
Number Of Cylinders Per Compressor 6 6 6 6 6 6 6 6 6 6
Oil Charge Per Compressor, Oz. 140 140 140 140 140 140 140 255 255 255
Oil Charge Per Compressor, (g) (3969) (3969) (3969) (3969) (3969) (3969) (3969) (7229) (7229) (7229)
CAPACITY REDUCTION STEPS - PERCENT OF COMPRESSOR DISPLACEMENT
Standard Staging - Circuit #1 in Lead
Standard 4 Stages 0-33-50-83-100 0-30-67-82-100 0-33-50-83-100 0-32-67-83-100 0-33-50-83-100
Standard Staging - Circuit #2 in Lead
Standard 4 Stages 0-33-50-83-100 0-36-67-85-100 0-33-50-83-100 0-35-67-84-100 0-33-50-83-100
Optional Staging - Circuit #1 in Lead
Optional 6 Stages 0-17-33-50-67-83-
Optional Staging - Circuit #2 in Lead
Optional 6 Stages 0-17-33-50-67-83-
055E 060E 065E 070E 075E
100
100
0-15-33-48-67-82-
100
0-18-33-51-67-85-
100
0-17-33-50-67-83-
100
0-17-33-50-67-83-
100
0-16-33-49-67-83-
100
0-17-33-51-67-84-
100
0-17-33-50-67-83-
100
0-17-33-50-67-83-
100
CONDENSERS - HIGH EFFICIENCY FIN AND TUBE TYPE WITH INTEGRAL SUBCOOLING
Maximum Relief Valve Pressure Setting, psig
CONDENSER FANS - DIRECT DRIVE PROPELLER TYPE
Number Of Fans - Fan Diameter, In. (mm) 6 - 26 (660) 6 - 26 (660) 6 - 26 (660) 8 - 26 (660) 10 - 26 (660)
DIRECT EXPANSION EVAPORATOR - BAFFLED SHELL AND THRU-TUBE
Maximum Refrigerant Working Pressure, psig
Water Inlet / Outlet Victaulic Connections,
NOTE:
1. Nominal capacity based on 95F ambient air and 54F/44F water range.
Coil Face Area,Sq. Ft. 43.1 43.1 43.1 43.1 43.1 43.1 57.8 57.8 57.8 57.8
Coil Face Area, (M2) (4) (4) (4) (4) (4) (4) (5.4) (5.4) (5.4) (5.4)
Finned Height x Finned Length, In. 40 x 155 40 x 155 40 x 155 40 x 155 40 x 155 40 x 155 40 x 208 40 x 208 40 x 208 40 x 208
Finned Height x Finned Length, (mm) (1016 x
Fins Per Inch x Rows Deep 16 x 3 16 x 3 16 x 3 16 x 3 16 x 3 16 x 3 16 x 3 16 x 3 16 x 3 16 x 3
(kPa)
Number Of Motors - HP (kW) 6 - 1.0 (.7) 6 - 1.0 (.7) 6 - 1.0 (.7) 8 - 1.0 (.7) 10 - 1.0 (.7)
Fan And Motor RPM, 60/50Hz 1100/915 1100/915 1100/915 1100/915 1100/915
60 Hz Fan Tip Speed, FPM 7760 7760 7760 7760 7760
60 Hz Total Unit Airflow, CFM 38250 38250 38250 51000
Diameter, in. - Length, Ft. 12 - 08 12 - 08 12 - 08 12 - 08 12 - 08
Diameter, (mm) - Length, (mm) (305 - 2439) (305 - 2439) (305 - 2439) (305 - 2439) (305 - 2439)
Water Volume, Gallons, (L) 24.30 (92) 24.30 (92) 24.30 (92) 24.30 (92) 24.30 (92)
Maximum Water Pressure, psig (kPa) 175 (1207) 175 (1207) 175 (1207) 175 (1207) 175 (1207)
(kPa)
In. (mm)
Drain - NPT int, In. (mm) .375 (9.5) .375 (9.5) .375 (9.5) .375 (9.5) .375 (9.5)
Vent - NPT int, In. (mm) .375 (9.5) .375 (9.5) .375 (9.5) .375 (9.5) .375 (9.5)
3937)
(3103)
(1016 x
3937)
450
(3103)
225 (1552) 225 (1552) 225 (1552) 225 (1552) 225 (1552)
5 (127) 5 (127) 5 (127) 5 (127) 5 (127)
450
(1016 x
3937)
450
(3103)
(1016 x
3937)
450
(3103)
(1016 x
3937)
450
(3103)
(1016 x
3937)
450
(3103)
(1016 x
5283)
450
(3103)
(1016 x
5283)
450
(3103)
(1016 x
5283)
450
(3103)
(1016 x
5283)
450
(3103)
58000
IM 676 13
Table 9, Physical data ALR080E Through 100E
PHYSICAL DATA ALR MODEL NUMBER
080E 085E 090E 100E
BASIC DATA Ckt.1 Ckt.2 Ckt.1 Ckt.2 Ckt.1 Ckt.2 Ckt.1 Ckt.2
Unit Capacity @ ARI Conditions (1), Tons (kW) 81.3 (285.9) 85.3 (300.0) 92.7 (326.0) 99.2 (348.8)
Number Of Refrigerant Circuits 2 2 2 2
Unit Operating Charge, R-22, Lb. 62 62 65 65 65 65 68 68
Unit Operating Charge, R-22, (kg) (22.7) (22.7) (22.7) (22.7) (24.9) (24.9) (24.9) (24.9)
Cabinet Dimensions, LxWxH, In. 229 x 83 x 59 229 x 83 x 59 229 x 83 x 59 229 x 83 x 59
Cabinet Dimensions, LxWxH, (mm) (5817 x 2108 x 1499) (5817 x 2108 x 1499) (5817 x 2108 x 1499) (5817 x 2108 x 1499)
Unit Operating Weight, Lbs. (kg) 7055 (3200) 7680 (3484) 7685 (3486) 7830 (3552)
Unit Shipping Weight, Lbs. (kg) 6685 (3032) 7310 (3316) 7315 (3318) 7535 (3418)
Add'l Weight If Copper Finned Coils, Lb. (kg) 826 (375) 826 (375) 826 (375) 826 (375)
COMPRESSORS
Type Semi-Hermetic Semi-Hermetic Semi-Hermetic Semi-Hermetic
Nominal Horsepower 25-25 25-25 25-25 30-25 30-25 30-25 30-30 30-30
Number Of Cylinders Per Compressor 4 - 4 4 - 4 4 - 4 4 - 4 6 - 4 6 - 4 6 - 4 6 - 4
Oil Charge Per Compressor, Oz. 130 - 130 130 - 130 130 - 130 140 - 130 140 - 130 140 - 130 140 - 140 140 - 140
Oil Charge Per Compressor, (g) (3686 - 3686) (3686 -
3686)
CAPACITY REDUCTION STEPS - PERCENT OF COMPRESSOR DISPLACEMENT
Standard Staging - Circuit #1 in Lead
Standard 6 Stages 0-13-25-38-50-75-100 0-12-24-36-48-72-100 0-19-39-48-58-79-100 0-18-36-45-54-76-100
Standard Staging - Circuit #2 in Lead
Standard 6 Stages 0-13-25-38-50-75-100 0-12-24-36-48-76-100 0-19-39-48-58-79-100 0-18-36-45-54-76-100
Optional Staging - Circuit #1 in Lead
Optional 8 Stages 0-13-25-38-50 0-12-24-36-48 0-19-39-48-58 0-18-36-45-76
-63-75-88-100 -60-76-88-100 -69-81-90-100 -68-82-91-100
Optional Staging - Circuit #2 in Lead
Optional 8 Stages 0-13-25-38-50 0-12-24-36-48 0-19-39-48-58 0-18-36-45-76
-63-75-88-100 -64-76-88-100 -69-81-90-100 -68-82-91-100
CONDENSERS - HIGH EFFICIENCY FIN AND TUBE TYPE WITH INTEGRAL SUBCOOLING
Coil Face Area,Sq. Ft. 57.8 57.8 57.8 57.8 57.8 57.8 57.8 57.8
Coil Face Area, (M2) (5.4) (5.4) (5.4) (5.4) (5.4) (5.4) (5.4) (5.4)
Finned Height x Finned Length, In. 40 x 208 40 x 208 40 x 208 40 x 208 40 x 208 40 x 208 40 x 208 40 x 208
Finned Height x Finned Length, (mm) (1016 x 5283) (1016 x
5283)
Fins Per Inch x Rows Deep 16 x 3 16 x 3 16 x 3 16 x 3 16 x 3 16 x 3 16 x 3 16 x 3
Maximum Relief Valve Pressure Setting, psig (kPa) 450 (3103) 450 (3103) 450 (3103) 450 (3103) 450 (3103) 450 (3103) 450 (3103) 450 (3103)
CONDENSER FANS - DIRECT DRIVE PROPELLER TYPE
Number Of Fans - Fan Diameter, In. (mm) 10 - 26 (660) 10 - 26 (660) 10 - 26 (660) 10 - 26 (660)
Number Of Motors - HP (kW) 10 - 1.0 (.7) 10 - 1.0 (.7) 10 - 1.0 (.7) 10 - 1.0 (.7)
Fan And Motor RPM, 60/50Hz 1100/915 1100/915 1100/915 1100/915
60 Hz Fan Tip Speed, FPM 7760 7760 7760 7760
60 Hz Total Unit Airflow, CFM 58000 58000 58000 58000
DIRECT EXPANSION EVAPORATOR - BAFFLED SHELL AND THRU-TUBE
Diameter, in. - Length, Ft. 12 - 08 14 - 10 14 - 10 14 - 10
Diameter, (mm) - Length, (mm) (305 - 2439) (356 - 3048) (356 - 3048) (356 - 3048)
Water Volume, Gallons, (L) 24.30 (92) 36.10 (136.6) 36.10 (136.6) 36.10 (136.6)
Maximum Water Pressure, psig (kPa) 175 (1207) 175 (1207) 175 (1207) 175 (1207)
Maximum Refrigerant Working Pressure, psig (kPa) 225 (1552) 225 (1552) 225 (1552) 225 (1552)
Water Inlet / Outlet Victaulic Connections, In. (mm) 5 (127) 6 (152.4) 6 (152.4) 6 (152.4)
Drain - NPT int, In. (mm) .375 (9.5) .375 (9.5) .375 (9.5) .375 (9.5)
Vent - NPT int, In. (mm) .375 (9.5) .375 (9.5) .375 (9.5) .375 (9.5)
NOTE:
1. Nominal capacity based on 95F ambient air and 54F/44F water range.
(3686 -
3686)
(1016 x
5283)
(3969 -
3686)
(1016 x
5283)
(3969 -
3686)
(1016 x
5283)
(3969 -
3686)
(1016 x
5283)
(3969 -
3969)
(1016 x
5283)
(3969 -
3969)
(1016 x
5283)
14 IM 676
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