Series 20 Air Cooled Condensing Units - Titan Air

Series 20 

Air Cooled Condensing Units 

Standard Features 

Unit Configuration 

• Low Profile 

• Base Rail Configuration 

• Multiple Rigging Points 

• Removable Access Panels 

• Hinged Control Panel Access 

• ETL Certified Unit 

Refrigerant Circuit 

• Liquid Line Shut Off Valve with Charging Port 

• Oil Failure Switch on each Compressor 

(CS, CD, & CM units) 

• High Pressure Safety Control 

• Low Pressure Operating Control 

• Shipped With Dry Nitrogen Holding Charge 

Condenser 

• Direct Drive Condenser Fans 

• Epoxy Powder Coated Fan Guards 

• Three-Phase Motors with Permanently 

Lubricated Ball Bearings 

• Fan Staging Heads Pressure Control to +20°F 

• Sub-Circuit Fan Motor fusing with Internal 

Overload Motor Protector 

• Fan Motor Contactor 

• Plate Fin / Full Tube Collar Condenser Coils 

• Baffled Condenser Plenum 

• "True" Subcooling 

Electrical Components 

• Fused Control Circuit 

• Prewired Controls 

• Auto / Demand Pumpdown Switch 

• UL 508 Certified & Labeled 

Compressors 

• Energy Efficient Copeland ® Compressors 

• Compressor Service Valves 

• Internal Compressor Overload Protection 

• Compressor Fusing (LD, CD & CM units) 

• Compressor Contactors 

• Compressor Time Delay (LD, CD, & CM units) 

• Compressor Isolator Pads 

• Oil Equalization System each Circuit (CM units) 

We reserve the right to change or revise specifications and product design in connection with 

any feature of our products. Such changes do not entitle the buyer to corresponding changes, 

improvements, additions or replacement for equipment previously sold or shipped.

Technical Systems’ Series 20 condensing units have 

been designed to satisfy the requirements of the most 

discerning customer. Whatever the concern; versatility, 

efficiency, serviceability… Technical Systems Series 20 

condensing units apply sound engineering principles to 

satisfy even the most demanding applications. 

All Series 20 condensing units are designed and 

rated in accordance with ARI standard 520. All refrigerant 

containing vessels are constructed in accordance with 

ANSI B9.1. Electrical components are UL approved 

and applied in accordance with their approved usage. 

All wiring and electrical construction are in accordance 

with the National Electric Code. Units are ETL listed and 

labeled. The control panels are UL 508 listed and labeled. 

The Series 20 product line offers a total of 50 units 

making it one of the most comprehensive offering of air 

cooled condensing units available today. 

“LS” and “LD” condensing units are designed with 

full hermetic scroll compressors for single circuit and 

dual circuit applications. Capacities ranging from 3 to 

32 tons make the “LS” and “LD” series condensing units 

perfect for commercial applications. Unit configuration 

is a base rail design for structural integrity. All “LS” and 

“LD” condensing units incorporate independent refrigerant 

circuits. Each circuit has independent safeties for proper 

system protection. 

“CS” condensing units offer a tonnage range of 6 to 

57 tons with unmatched versatility in design. Technical 

Systems’ Series 20 condensing units make it possible 

to design a system with smaller tonnage requirements 

and know that a condensing unit with such features as 

semi-hermetic compressors, single circuit simplicity, and 

base rail design is available. These units are available 

with a full compliment of accessories ranging from gauge 

Series Designation 

for Condensing Units 

Standard Construction 

Air Cooled 

Unit Design Vintage 

panels to service indication lights; phase failure monitors 

to unit disconnects; and copper fin condenser coils to 

special surface coatings. If versatility and quality are job 

requirements, Technical Systems’ “CS” condensing units 

can meet the specification. 

“CD” condensing units combine many of the features 

and benefits of the “CS” condensing units with capacities 

from 13 to 115 tons, offering one of the finest midrange 

dual circuit air cooled condensing units available. 

Independent circuits offer redundancy in operation and 

allow for a more dependable condensing unit. Each 

circuit is protected by an independent set of safeties 

which assures proper circuit protection. Each compressor 

is protected by an inherent thermistor embedded in 

each of the three windings providing proper thermal 

protection. Oil failure safety switches are provided for 

each compressor, thus monitoring the oil pressure for that 

specific compressor. CD10 through CD80 condensing 

units are fabricated on a formed steel base, and CD90 

and up are fabricated on a structural steel base. Series 

20 “CD” condensing units are designed to offer mid-range 

capacities with the advantages previously reserved only 

for large tonnage condensing units. 

“CM” condensing units offer a capacity range of 92 

to 168 tons with a unit EER as high as 13.72. These 

excellent efficiencies are accomplished with dependable 

components such as high efficiency Discus compressors 

and condensers with 1/2” copper tubes and a maximum 

fin spacing of 14 fins per inch. Add to the excellent 

efficiencies and dependable components the structural 

integrity of a welded steel base and the accessibility of 

removable side screens and you have a condensing unit 

designed to operate with reliability not only for the first 

year, but for years to come. 

Nomenclature 

20 A O C M 120 

Nominal Horsepower 

Number of Compressors 

S - Single 

D - Dual 

M - Multiple 

Compressor Type 

L - Scroll 

C - Reciprocating 

S - Screw 

When Ordering Please Specify: 

• Complete Model Number • Room Temperature 

• Saturated Suction Temperature • Accessories 

• Electrical Characteristics Unit Voltage & Control Voltage

TOTALLY ENCLOSED FAN MOTOR - Totally 

enclosed non-ventilated motors are available for 

corrosive or hazardous environments. 

GAUGES* - Oil, high, and low pressure liquid 

filled gauges are optional on all Technical Systems’ 

condensing units. We recommend the gauges be 

supplied with manual shut off valves. 

CYLINDER UNLOADING** - Additional steps of 

cylinder unloading are available to meet today’s part 

load design requirement. 

HOT GAS BYPASS - Standard hot gas bypass, 

includes hand isolation valve, regulator and solenoid 

mounted, wired, and piped. 

CONTROL CIRCUIT TRANSFORMER - A factory 

mounted transformer provides 115-volt or 24-volt control 

where a separate power source is not available. 115- 

volt convenience outlet is also available upon request. 

ALARM CIRCUIT WITH HORN - Allows for audible 

alarm on oil, high, or low pressure failure. Dry contacts 

for remote indication are available. 

GUARANTEED OFF TIMER - 3 to 30 minute timers 

are available to prevent compressor short cycling. 

PART WINDING START*** - Factory wired part 

winding start is available to reduce electrical inrush. 

Available Options 

3 VALVE BYPASS - May be factory installed to allow 

for drier bypass and change-out during unit operation. 

DISCONNECT SWITCH - Fused and non-fused 

disconnects may be factory installed for single point 

connections. 

REFRIGERATION SPECIALTIES - A full line of 

refrigeration specialties such as suction accumulators, 

suction/discharge vibrasorbers, hot gas mufflers, etc. 

are optional for factory mounting and piping. 

DOOR INTERLOCK - May be installed on control 

panel if desired. A positive latching solenoid will insure 

that control panel doors may not be opened until power 

is disconnected from the unit. Additionally, a throughthe-door 

panel mounted disconnect with door interlock 

is available up to 200 amps. 

LOW AMBIENT LOCKOUT - Available as an option 

to prevent unit operation below an adjustable set point. 

This protects a system from being inadvertently started 

in ambients for which it was not designed. 

AUTOMATIC LEAD/LAG - Automatic lead/lag switch 

available to sequence starting of compressors on every 

system cycle. 

CIRCUIT BREAKER - Optional on all condensing 

units. Circuit breakers may be installed in lieu of system 

fusing. 

INDICATING LIGHTS - When required, indicating 

lights can be factory installed for visual confirmation of 

system operation. 

PHASE FAILURE / UNDER VOLTAGE 

PROTECTION - Optional factory mounted in control 

panel to protect against “brown out” and phase failure 

conditions. 

LOW AMBIENT HEAD PRESSURE CONTROL - 

Low ambient head pressure control by fan cycling is 

standard to 20°F. on all condensing units. However, 

additional control by condenser flooding to -20°F. is 

available. 

PRESSURE RELIEF - Pressure relief valves and 

bull’s eye sight glasses are available for factory 

mounting when receives are specified. 

PAINT - Standard paint systems are available. Gray 

color is standard; however, color selection to match 

surrounding decor is available. 

COPPER FIN CONDENSER COILS - Available as 

an option for corrosion environments. Features dieformed 

configured fins. 

KILOWATT AND AMP METERS - Available as a 

factory option for continuous monitoring of the unit 

kilowatt and/or amperage consumption. Meters are 

available with analog or digital readout. 

ELAPSED TIME METERS - Meters give a visual 

display of the accumulative hours that a compressor 

has operated. Allows for easier scheduling of preventive 

maintenance. 

LIQUID LINE TRIM - Replaceable core driers, liquid 

line solenoids and moisture indicating sight glasses are 

all available factory mounted or shipped loose for field 

installation. 

* High and Low Pressure Gauges are available on all 

units. Oil Pressure Gauge not available on “L” Series 

compressors. 

** This option is available only on units with type “C” 

compressors (CS5 and CS8 are not available with 

unloading). 

*** The part winding start option is available only on units 

with type “C” compressors (CS20 and larger).

General Specifications 

Series 20 air cooled condensing units are 

designed for easy handling and reduced installation 

costs. All Series 20 condensing units are pressure 

tested prior to shipment. Internal power and control 

wiring are ready for field connection to utilities. 

CABINET 

All Series 20 condensing units are constructed of 

heavy duty mill galvanized steel panels. Units are 

base rail configured for distributed roof loadings, 

convenient handling and easier installation. Lifting 

points and mounting holes are provided on each 

unit. 

COMPRESSORS 

Series 20 condensing units with type “C” 

compressors are equipped with Copeland Discus® 

semi-hermetic compressors. These high efficiency, 

industrial grade semi-hermetic compressors are 

designed to provide field serviceability for easier 

maintenance and optimum system performance. 

Copeland compressors utilize blocked suction 

unloading which allows for reduced power 

consumption during unloaded conditions and 

reduces total yearly power usage. Suction and 

discharge service valves, suction strainer, charging 

port and oil pumps are all standard with type “C” 

compressor. 

CONDENSER 

The casing is heavy duty, corrosion resistant 

steel. Each fan section is separated by baffles to 

prevent air bypass. 

The condenser coils are constructed with 

seamless copper tubes arranged in a staggered 

row pattern and mechanically expanded into plated 

type configured aluminum fins with full fin collars. 

A separate subcooling coil, integral with the 

condenser, is provided on each circuit to eliminate 

the possibility of liquid flashing and to increase unit 

efficiency. 

Quiet and efficient direct driven, multiple 

propeller fans with steel hubs and aluminum 

blades discharge vertically from formed venturis 

to provide maximum static efficiency and minimize 

noise generation. Condenser fans are driven by 

three-phase motors that are specifically designed 

for vertical shaft direct drive applications. Motors 

feature permanently lubricated ball bearings and 

have inherent thermal protection. Fan guards are of 

heavy gauge, close meshed steel wire construction 

with an epoxy powder coating. 

ELECTRICAL CONTROL CENTER 

The Technical Systems air cooled condensing 

units are shipped with operating and safety controls 

including: 

• Circuit Pump Down Switch 

• Oil Pressure Control-Manual Reset 

(“C” type compressor only) 

• High Pressure Control - Manual Reset 

• Pumpdown Pressure Control - Auto Reset 

• Fan Staging Controls - Pressure Actuated 

Type “L” compressors are the reliable Copeland 

Scroll compressors. The Copeland Compliant 

Scroll® is a welded hermetic compressor. This 

design provides a rotary compressor action for 

smooth and quiet operation. 

POWER CONTROLS INCLUDE: 

• Compressor Motor Contactors 

• Fan Motor Contactors 

• Compressor Motor Fuses* 

• Fan Motor Fuses 

• Control Circuit Fuses 

• Power Terminal Blocks 

• Separate 115-Volt Control Circuit 

Terminal Blocks 

• Control Relays 

• Compressors Crankcase Heater Relays 

• Field Auxiliary Control Terminals 

• Fuses are not provided on “LS” and “CS” units.

Model 

20AO 

LS 3 

LS 5 

LS 8 

LS 9 

LS 10 


* Based on ARI Standard 520 (95°F Ambient and 45°F Saturated Suction Temperature) 

** Based on 80% of the coil volume at 90°F ambient. 

Saturated 

Suction 

Temperature 

85° Ambient 95° Ambient 105° Ambient 

Capacity KW 1 EER 1 Capacity KW 1 EER 1 Capacity KW 1 EER 1 

35° 2.76 2.89 11.44 2.60 3.19 9.81 2.44 3.49 8.39 

40° 3.04 2.95 12.34 2.86 3.25 10.56 2.68 3.57 9.03 

45° 3.33 3.02 13.23 3.14 3.33 11.32 2.94 3.65 9.68 

50° 3.64 3.09 14.13 3.43 3.41 12.06 3.21 3.74 10.29 

35° 4.94 4.83 12.26 4.64 5.38 10.36 4.32 5.96 8.71 

40° 5.42 4.96 13.10 5.09 5.52 11.07 4.73 6.11 9.29 

45° 4.92 5.12 13.87 5.55 5.69 11.72 5.16 6.29 9.85 

50° 6.44 5.38 14.59 6.04 5.88 12.33 2 2 2 

35° 7.25 7.51 11.58 6.88 8.25 10.00 6.48 9.03 8.61 

40° 7.96 7.68 12.45 7.56 8.43 10.75 7.12 9.23 9.26 

45° 8.72 7.87 13.31 8.27 8.64 11.49 7.79 9.45 9.90 

50° 9.53 8.08 14.15 9.03 8.87 12.22 8.51 9.69 10.53 

35° 8.59 9.24 11.16 8.13 10.14 9.61 7.63 11.10 8.25 

40° 9.43 9.48 11.93 8.91 10.41 10.28 2 2 2 

45° 10.32 9.76 12.68 9.75 10.70 10.93 2 2 2 

50° 11.25 10.07 13.41 10.63 11.04 11.56 2 2 2 

35° 9.89 10.62 11.63 9.40 11.72 9.62 2 2 2 

40° 10.83 10.92 11.90 10.26 12.02 10.25 2 2 2 

45° 11.83 11.25 12.61 11.19 12.37 10.85 2 2 2 

50° 12.88 11.64 13.28 12.16 12.76 11.43 2 2 2 

1 KW and EER ratings are for the entire unit. 2 Consult factory. 

Unit Model Numbers 

LS 3 LS 5 LS 8 LS 9 LS 10 

Nominal Tons* 3.1 5.4 8.1 9.4 10.8 

L" x W" x H" 76" x 34" x 46" 76" x 34" x 46" 87" x 34" x 46" 87" x 34" x 46" 87" x 34" x 46" 

Shipping Weight 711 lb. 759 lb. 977 lb. 1,005 lb. 1,029 lb. 

Refrigerant Circuits 1 1 1 1 1 

Refrigerant Charge (R-22) 3.5 lbs. 6 lbs. 10 lbs. 11 lbs. 13 lbs. 

Coil Pumpdown Capacity** 7.3 lbs. 14.3 lbs. 23.8 lbs. 23.8 lbs. 24.7 lbs. 

COMPRESSOR(s) 

Nominal Horsepower 3 5 7.5 9 10 

Oil Charge 55 oz. 65 oz. 128 oz. 128 oz. 128 oz. 

Crankcase Heater Watts 40 40 70 70 70 

Suction Connection - ODS 7/8" 1 1/8" 1 3/8" 1 3/8" 1 3/8" 

Liquid Line Connection - ODS 1/2" 1/2" 5/8" 5/8" 5/8" 

CONDENSER 

Face Area - Sq. Ft. 5 6.5 10.8 10.8 10.8 

Rows / Fins Per Inch (FPI) 2 / 14 3 / 14 3 / 14 3 / 14 4 / 14 

Total CFM 4,410 5,100 7,500 7,500 7,200 

CONDENSER FANS(s) 

Physical Data 

Qty. / Diameter 1 / 24" 1 / 24" 1 / 28" 1 / 28" 1 / 28" 

Horsepower - Each 1/2 1/2 1 1 1 

RPM 1,100 1,100 1,100 1,100 1,100 

Tip Speed (FPM) 6,900 6,900 8,060 8,060 8,060 

Capacity Data

Model 


LS 13 

LS 15 

LD 10 

LD 15 

LD 18 




Saturated 

Suction 

Temperature 



35° 12.31 14.08 10.49 11.64 15.42 9.06 2 2 2 

40° 13.51 14.47 11.20 12.77 15.83 9.68 2 2 2 

45° 14.78 14.93 11.88 13.97 16.30 10.28 2 2 2 

50° 16.12 15.44 12.52 15.23 16.85 10.84 2 2 2 

35° 14.80 15.79 11.25 13.96 17.33 9.67 13.06 18.95 8.27 

40° 16.27 16.19 12.05 15.34 17.75 10.37 2 2 2 

45° 17.80 16.67 12.82 16.79 18.25 11.04 2 2 2 

50° 19.43 17.18 13.57 18.32 18.80 11.70 2 2 2 

35° 9.89 9.62 12.35 9.30 10.71 10.42 8.66 11.87 8.76 

40° 10.85 9.88 13.18 10.19 10.99 11.13 9.49 12.16 9.36 

45° 11.85 10.18 13.96 11.13 11.31 11.80 10.35 12.51 9.93 

50° 12.91 10.53 14.71 12.11 11.69 12.43 2 2 2 

35° 14.50 15.01 11.59 13.75 16.50 10.01 12.96 18.06 8.61 

40° 15.93 15.35 12.46 15.11 16.86 10.75 14.24 18.45 9.27 

45° 17.45 15.72 13.32 16.55 17.27 11.49 15.59 18.88 9.9 

50° 19.06 16.15 14.16 18.07 17.74 12.22 17.02 19.39 10.53 

35° 17.18 18.48 11.16 16.25 20.29 9.61 15.26 22.19 8.26 

40° 18.86 18.96 11.94 17.83 20.81 10.29 2 2 2 

45° 20.64 19.52 12.69 19.50 21.39 10.94 2 2 2 

50° 22.51 20.13 13.42 21.26 22.06 11.56 2 2 2 



LS 13 LS 15 LD 10 LD 15 LD 18 

Nominal Tons* 13.6 16.4 10.9 16.2 18.8 

L" x W" x H" 120" x 34" x 46" 120" x 34" x 46" 76" x 68" x 63" 87" x 68" x 63" 87" x 68" x 63" 

Shipping Weight 1,199 lbs. 1,288 lbs. 1,604 lbs. 2,056 lbs. 2,080 lbs. 


Refrigerant Charge (R-22) 16 lbs. 18 lbs. 12 lbs. 19 lbs. 24 lbs. 


COMPRESSOR(s) 

Nominal Horsepower 13 15 5 5 7.5 7.5 9 9 

Oil Charge 140 oz. 140 oz. 65 oz. 65 oz. 128 oz. 128 oz. 128 oz. 128 oz. 

Crankcase Heater Watts 70 70 40 40 70 70 70 70 

Suction Connection - ODS 1 3/8" 1 3/8" 1 1/8" 1 1/8" 1 3/8" 1 3/8" 1 3/8" 1 3/8" 

Liquid Line Connection - ODS 7/8" 7/8" 1/2" 1/2" 5/8" 5/8" 5/8" 5/8" 

CONDENSER 

Face Area - Sq. Ft. 18.9 18.9 13 21.7 21.7 


Total CFM 13,100 12,400 10,200 15,000 15,000 


Physical Data 

Qty. / Diameter 2 / 28" 2 / 28" 2 / 24" 2 / 28" 2 / 28" 

Horsepower - Each 1 1 1/2 1 1 

RPM 1,100 1,100 1,100 1,100 1,100 

Tip Speed (FPM) 8,060 8,060 6,900 8,060 8,060 

Capacity Data

Model 


LD 20 

LD 26 

LD 30 

CS 5 

CS 8 




Saturated 

Suction 

Temperature 



35° 19.84 20.97 11.35 18.85 23.16 9.77 17.85 25.47 8.41 

40° 21.73 21.54 12.11 20.61 23.74 10.41 2 2 2 

45° 23.75 22.20 12.84 22.47 24.41 11.05 2 2 2 

50° 25.87 22.95 13.53 24.44 25.18 11.65 2 2 2 

35° 24.68 27.92 10.61 23.35 30.57 9.16 21.97 33.37 7.91 

40° 27.09 28.66 11.34 25.62 31.37 9.80 2 2 2 

45° 29.64 29.55 12.04 28.03 32.29 10.42 2 2 2 

50° 32.35 30.54 12.71 30.57 33.36 10.99 2 2 2 

35° 29.68 31.32 11.37 28.00 34.39 9.77 26.22 37.60 8.37 

40° 32.61 32.11 12.19 30.78 35.21 10.49 28.83 38.48 8.99 

45° 35.70 33.02 12.97 33.70 36.17 11.18 2 2 2 

50° 38.96 34.04 13.73 36.77 37.26 11.85 2 2 2 

35° 5.76 5.68 12.18 5.37 6.05 10.65 4.98 6.38 9.36 

40° 6.39 5.90 13.00 5.96 6.31 11.35 5.54 6.68 9.95 

45° 7.06 6.13 13.83 6.60 6.57 12.05 2 2 2 

50° 7.77 6.37 14.63 7.27 6.85 12.73 2 2 2 

35° 8.15 8.38 11.67 7.61 8.92 10.24 7.07 9.41 9.02 

40° 9.02 8.69 12.45 8.43 9.28 10.91 7.84 9.82 9.59 

45° 9.95 9.01 13.25 9.31 9.65 11.57 2 2 2 

50° 10.94 9.36 14.02 10.25 10.04 12.24 2 2 2 



LD 20 LD 26 LD 30 CS 5 CS 8 

Nominal Tons* 21.6 27.1 32.8 6.4 8.9 






COMPRESSOR(s) 

Nominal Horsepower 10 10 13 13 15 15 5 7.5 

Oil Charge 128 oz. 128 oz. 140 oz. 140 oz. 140 oz. 140 oz. 112 oz. 144 oz. 

Crankcase Heater Watts 70 70 70 70 70 70 70 70 

Suction Connection - ODS 1 3/8" 1 3/8" 1 3/8" 1 3/8" 1 3/8" 1 3/8" 1 1/8" 1 1/8" 

Liquid Line Connection - ODS 7/8" 7/8" 7/8" 7/8" 7/8" 7/8" 5/8" 5/8" 

CONDENSER 

Face Area - Sq. Ft. 21.7 37.7 37.7 6.5 10.8 


Total CFM 14,400 26,200 24,800 5,500 7,500 


Physical Data 

Qty. / Diameter 2 / 28" 4 / 28" 4 / 28" 1 / 24" 1 / 28" 

Horsepower - Each 1 1 1 1/2 1 

RPM 1,100 1,100 1,100 1,100 1,100 

Tip Speed (FPM) 8,060 8,060 8,060 6,900 8,060 

Capacity Data

Model 


CS 10 

CS 15 

CS 20 

CS 25 

CS 30 




Saturated 

Suction 

Temperature 



35° 11.78 12.87 10.98 11.01 13.69 9.65 10.22 14.44 8.49 

40° 12.90 13.29 11.65 12.06 14.17 10.21 2 2 2 

45° 14.10 13.72 12.33 13.16 14.66 10.78 2 2 2 

50° 15.36 14.16 13.01 14.34 15.17 11.34 2 2 2 

35° 15.62 17.08 10.97 14.64 18.17 9.67 13.64 19.16 8.54 

40° 17.10 17.68 11.61 16.01 18.83 10.20 2 2 2 

45° 18.68 18.28 12.26 17.46 19.51 10.74 2 2 2 

50° 20.34 18.91 12.91 18.99 20.19 11.29 2 2 2 

35° 16.73 18.18 11.04 15.46 19.20 9.66 2 2 2 

40° 18.40 18.95 11.65 16.99 20.04 10.17 2 2 2 

45° 20.13 19.76 12.23 18.57 20.91 10.66 2 2 2 

50° 21.95 20.58 12.80 20.23 21.80 11.13 2 2 2 

35° 21.72 22.74 11.46 20.32 24.18 11.46 18.88 25.50 8.88 

40° 23.86 23.70 12.08 22.33 25.26 10.61 2 2 2 

45° 26.15 24.69 12.71 24.45 26.36 11.13 2 2 2 

50° 28.53 25.74 13.30 26.65 27.52 11.62 2 2 2 

35° 25.06 28.85 10.42 23.38 30.49 9.20 2 2 2 

40° 2.49 30.14 10.94 25.65 31.92 9.64 2 2 2 

45° 30.07 31.49 11.46 28.04 33.42 10.07 2 2 2 

50° 32.77 32.92 11.95 2 2 2 2 2 2 



CS 10 CS 15 CS 20 CS 25 CS 30 

Nominal Tons* 13.2 17.5 18.7 24.5 28.9 

L" x W" x H" 120" x 34" x 46" 120" x 34" x 46" 120" x 34" x 46" 143" x 34" x 53" 143" x 34" x 53" 

Shipping Weight 1,388 lbs. 1,441 lbs. 1,520 lbs. 1,754 lbs. 1,849 lbs. 




COMPRESSOR(s) 

Nominal Horsepower 10 15 20 25 30 

Oil Charge 144 oz. 144 oz. 136 oz. 136 oz. 152 oz. 

Crankcase Heater Watts 70 70 100 100 100 

Suction Connection - ODS 1 3/8" 1 3/8" 1 5/8" 1 5/8" 2 1/8" 

Liquid Line Connection - ODS 7/8" 7/8" 7/8" 1 1/8" 1 1/8" 

CONDENSER 

Face Area - Sq. Ft. 19 19 19 24.2 24.2 


Total CFM 15,400 15,400 15,400 14,500 19,500 


Physical Data 

Qty. / Diameter 2 / 28" 2 / 28" 2 / 28" 2 / 28" 3 / 28" 

Horsepower - Each 1 1 1 1 1 

RPM 1,100 1,100 1,100 1,100 1,100 

Tip Speed (FPM) 8,060 8,060 8,060 8,060 8,060 

Capacity Data

Model 


CS 35 

CS 40 

CS 50 

CS 60 

CD 10 

10 




Saturated 

Suction 

Temperature 



35° 31.27 33.02 11.36 29.18 35.20 9.95 27.07 37.25 8.72 

40° 34.32 34.38 11.98 32.00 36.71 10.46 29.65 38.89 9.15 

45° 37.57 35.78 12.60 35.02 38.25 10.99 2 2 2 

50° 41.01 37.27 13.20 38.18 39.90 11.49 2 2 2 

35° 37.24 41.48 10.77 34.82 44.08 9.48 2 2 2 

40° 40.83 43.30 11.32 38.16 46.07 9.94 2 2 2 

45° 44.60 45.24 11.83 41.67 48.20 10.37 2 2 2 

50° 48.59 47.31 12.32 45.38 50.47 10.79 2 2 2 

35° 43.66 48.74 10.75 40.85 51.75 9.47 2 2 2 

40° 47.90 50.98 11.28 44.75 54.24 9.90 2 2 2 

45° 52.36 53.38 11.77 48.91 56.84 10.33 2 2 2 

50° 57.06 55.93 12.24 2 2 2 2 2 2 

35° 51.96 59.98 10.40 48.65 64.03 9.12 2 2 2 

40° 56.93 63.82 10.71 53.25 68.38 9.34 2 2 2 

45° 62.10 68.31 10.91 2 2 2 2 2 2 

50° 67.47 73.55 11.01 2 2 2 2 2 2 

35° 11.47 11.45 12.02 10.68 12.19 10.52 9.89 12.84 9.24 

40° 12.71 11.92 12.80 11.86 12.72 11.19 11.00 13.45 9.81 

45° 14.04 12.40 13.59 13.11 13.27 11.86 2 2 2 

50° 15.45 12.91 14.37 14.44 13.86 12.50 2 2 2 



CS 35 CS 40 CS 50 CS 60 CD 10 

Nominal Tons* 34.7 42 49.8 57.4 13 






COMPRESSOR(s) 

Nominal Horsepower 35 40 50 60 5 5 

Oil Charge 160 oz. 242 oz. 260 oz. 260 oz. 112 oz. 112 oz. 

Crankcase Heater Watts 100 100 200 200 70 70 

Suction Connection - ODS 2 1/8" 2 1/8" 2 5/8" 3 1/8" 1 1/8" 1 1/8" 

Liquid Line Connection - ODS 1 1/8" 1 1/8" 1 5/8" 1 5/8" 5/8" 5/8" 

CONDENSER 

Face Area - Sq. Ft. 40.7 40.7 48.3 48.3 21.7 


Total CFM 22,500 26,000 28,500 40,800 12,000 


Physical Data 

Qty. / Diameter 3 / 28" 4 / 28" 4 / 28" 6 / 28" 2 / 24" 

Horsepower - Each 1 1 1 1 1/2 

RPM 1,100 1,100 1,100 1,100 1,100 

Tip Speed (FPM) 8,060 8,060 8,060 8,060 6,900 

Capacity Data

Model 


CD 15 

CD 20 

CD 30 

CD 40 

CD 45 


Saturated 

Suction 

Temperature 


CD 15 CD 20 CD 30 CD40 CD 45 

Nominal Tons* 17.8 25.9 35.0 39.0 43.5 


Shipping Weight 2,263 lb. 2,632 lb. 2,863 lb. 3,245 lb. 3,280 lb. 




COMPRESSOR(s) 

Nominal Horsepower 7.5 7.5 10 10 15 15 20 20 25 25 

Oil Charge 144 oz. 144 oz. 144 oz. 144 oz. 144 oz. 144 oz. 136 oz. 136 oz. 136 oz. 136 oz. 

Crankcase Heater Watts 70 70 70 70 70 70 100 100 100 100 

Suction Connection - ODS 1 1/8" 1 1/8 1 3/8" 1 3/8" 1 3/8" 1 3/8" 1 5/8" 1 5/8" 1 5/8" 1 5/8" 

Liquid Line Connection - ODS 5/8" 5/8" 7/8" 7/8" 7/8" 7/8" 7/8" 7/8" 7/8" 1 1/8" 

CONDENSER 

Face Area - Sq. Ft. 21.7 37.7 37.7 48.3 48.3 


Total CFM 15,000 26,200 24,800 27,000 31,000 


Qty. / Diameter 2 / 28" 4 / 24" 4 / 28" 4 / 28" 4 / 28" 

Horsepower - Each 1 1/2 1 1 1 

RPM 1,100 1,100 1,100 1,100 1,100 

Tip Speed (FPM) 8,060 6,900 8,060 8,060 8,060 





35° 16.29 16.76 11.67 15.21 17.84 10.24 14.13 18.81 9.02 

40° 18.04 17.38 12.45 16.86 18.55 10.91 15.68 19.63 9.59 

45° 19.90 18.03 13.25 18.62 19.31 11.57 2 2 2 

50° 21.88 18.72 14.02 20.50 20.09 12.24 2 2 2 

35° 23.27 24.07 11.60 21.72 25.65 10.16 2 2 2 

40° 25.47 24.96 12.25 23.76 26.68 10.69 2 2 2 

45° 27.80 25.91 12.88 25.92 27.73 11.22 2 2 2 

50° 30.24 26.89 13.49 28.18 28.85 11.72 2 2 2 

35° 31.34 33.95 11.08 29.38 36.16 9.75 27.6 36.3 9.1 

40° 34.32 35.12 11.73 32.14 37.46 10.30 2 2 2 

45° 37.51 36.31 12.40 35.07 38.77 10.86 2 2 2 

50° 40.87 37.53 13.07 38.18 40.08 11.43 2 2 2 

35° 33.96 35.68 11.42 31.42 37.83 9.97 28.83 39.71 8.71 

40° 37.37 37.15 12.07 34.59 39.41 10.53 31.37 41.47 9.18 

45° 41.00 38.62 12.74 37.89 41.03 11.08 2 2 2 

50° 44.75 40.16 13.37 41.34 42.69 11.62 2 2 2 

35° 38.10 41.64 11.04 35.40 44.03 9.69 2 2 2 

40° 41.84 43.47 11.62 38.86 46.04 10.18 2 2 2 

45° 45.78 45.39 12.19 42.47 48.14 10.65 2 2 2 

50° 49.87 47.40 12.72 2 2 2 2 2 2 


Physical Data 

Capacity Data 

11

Model 


CD 50 

CD 55 

CD 60 

CD 65 

CD 70 

12 


Saturated 

Suction 

Temperature 


CD 50 CD 55 CD 60 CD 65 CD 70 

Nominal Tons* 49.0 54.1 57.9 66.4 73.8 




Refrigerant Charge (R-22) 63 lbs. 71 lbs. 71 78 lbs. 86 lbs. 


COMPRESSOR(s) 

Nominal Horsepower 25 25 25 30 30 30 30 35 35 35 



Suction Connection - ODS 1 5/8" 1 5/8" 1 5/8" 2 1/8" 2 1/8" 2 1/8" 2 1/8" 2 1/8" 2 1/8" 2 1/8" 

Liquid Line Connection - ODS 1 1/8" 1 1/8" 1 1/8" 1 1/8" 1 1/8" 1 1/8" 1 1/8" 1 1/8" 1 1/8" 1 1/8" 

CONDENSER 

Face Area - Sq. Ft. 48.3 48.3 48.3 81.4 81.4 


Total CFM 28,500 40,800 40,800 49,000 46,000 


Qty. / Diameter 4 / 28" 6 / 28" 6 / 28" 6 / 28" 6 / 28" 


RPM 1,100 1,100 1,100 1,100 1,100 

Tip Speed (FPM) 8,060 8,060 8,060 8,060 8,060 





35° 43.18 45.94 11.28 40.40 48.77 9.94 2 2 2 

40° 47.46 47.91 11.89 44.34 50.99 10.44 2 2 2 

45° 51.94 50.00 12.47 48.52 53.26 10.93 2 2 2 

50° 56.65 52.15 13.04 2 2 2 2 2 2 

35° 46.71 52.76 10.66 43.64 55.83 9.40 2 2 2 

40° 51.31 55.01 11.24 47.92 58.35 9.90 2 2 2 

45° 56.14 57.38 11.80 52.41 60.98 10.37 2 2 2 

50° 61.22 59.87 12.35 2 2 2 2 2 2 

35° 49.76 58.24 10.26 46.41 61.47 9.06 2 2 2 

40° 54.60 60.92 10.76 50.88 64.43 9.48 2 2 2 

45° 59.69 63.72 11.24 2 2 2 2 2 2 

50° 65.02 66.68 11.70 2 2 2 2 2 2 

35° 56.67 61.18 11.13 52.92 65.11 9.77 49.11 68.73 8.59 

40° 62.22 63.68 11.74 58.08 67.90 10.29 53.87 71.84 9.02 

45° 68.11 66.29 12.36 63.56 70.80 10.80 2 2 2 

50° 74.34 69.05 12.96 69.36 73.84 11.30 2 2 2 

35° 62.54 66.04 11.36 58.36 70.40 9.95 54.13 74.50 8.72 

40° 68.65 68.77 11.98 64.00 73.41 10.46 59.31 77.79 9.15 

45° 75.15 71.56 12.60 70.03 76.50 10.99 2 2 2 

50° 82.02 74.55 13.20 76.37 79.79 11.49 2 2 2 


Physical Data 

Capacity Data

Model 


CD 75 

CD 80 

CD 90 

CD 100 

CD 110 




Saturated 

Suction 

Temperature 



35° 68.13 74.11 11.06 63.62 78.82 9.71 2 2 2 

40° 74.69 77.40 11.62 69.68 82.44 10.18 2 2 2 

45° 81.61 80.87 12.16 76.10 86.25 10.63 2 2 2 

50° 88.92 84.58 12.68 82.88 90.27 11.07 2 2 2 

35° 74.48 82.97 10.77 69.64 88.15 9.48 2 2 2 

40° 81.66 86.59 11.32 76.33 92.14 9.94 2 2 2 

45° 89.20 90.48 11.83 83.33 96.41 10.37 2 2 2 

50° 97.18 94.62 12.32 90.76 100.94 10.79 2 2 2 

35° 81.98 88.16 11.18 76.77 93.94 9.82 71.45 99.37 8.64 

40° 89.98 91.91 11.78 84.23 98.10 10.33 2 2 2 

45° 98.45 95.91 12.36 92.16 102.51 10.82 2 2 2 

50° 107.39 100.18 12.90 100.46 107.21 11.28 2 2 2 

35° 87.86 96.51 10.92 82.21 102.63 9.61 2 2 2 

40° 96.43 100.83 11.48 90.18 107.40 10.08 2 2 2 

45° 105.45 105.46 12.00 98.59 112.50 10.52 2 2 2 

50° 114.97 110.38 12.50 107.40 117.90 10.93 2 2 2 

35° 97.73 102.20 11.48 91.76 109.26 10.09 85.52 116.66 8.81 

40° 107.35 107.50 12.01 100.76 115.27 10.52 93.90 123.38 9.16 

45° 117.51 113.42 12.48 110.27 121.95 10.90 2 2 2 

50° 128.16 120.15 12.89 120.23 129.46 11.22 2 2 2 



CD 75 CD 80 CD 90 CD 100 CD 110 

Nominal Tons* 78.2 84 93.5 99.2 109.6 






COMPRESSOR(s) 

Nominal Horsepower 35 40 40 40 40 50 50 50 50 60 


Crankcase Heater Watts 100 100 100 100 100 200 200 200 200 200 



CONDENSER 

Face Area - Sq. Ft. 81.4 81.4 96 96 162 


Total CFM 46,000 56,000 61,600 61,000 70,400 


Physical Data 

Qty. / Diameter 6 / 28" 8 / 28" 8 / 28" 8 / 28" 8 / 28" 


RPM 1,100 1,100 1,100 1,100 1,100 

Tip Speed (FPM) 8,060 8,060 8,060 8,060 8,060 

Capacity Data 

13

Model 


CD 120 

CM 90 

CM 100 

CM 110 

CM 120 

14 




Saturated 

Suction 

Temperature 



35° 105.77 111.71 11.36 99.38 119.39 9.99 2 2 2 

40° 116.08 118.52 11.75 109.00 127.16 10.29 2 2 2 

45° 126.89 126.47 12.04 119.17 136.09 10.51 2 2 2 

50° 134.19 135.73 12.22 129.69 146.44 10.63 2 2 2 

35° 81.54 85.28 11.47 76.37 90.90 10.08 71.05 96.11 8.87 

40° 89.58 88.76 12.11 83.86 94.81 10.62 77.98 100.50 9.31 

45° 98.08 92.44 12.73 91.83 98.86 11.14 2 2 2 

50° 107.06 96.30 13.34 100.19 103.15 11.65 2 2 2 

35° 86.97 90.76 11.50 81.42 96.55 10.12 75.63 101.84 8.91 

40° 95.63 94.53 12.14 89.46 100.83 10.65 2 2 2 

45° 104.71 98.52 12.75 97.94 105.20 11.17 2 2 2 

50° 114.32 102.63 13.37 106.84 109.77 11.68 2 2 2 

35° 95.30 97.62 11.72 89.29 104.17 10.29 83.00 110.21 9.04 

40° 104.84 101.56 12.39 98.20 108.69 10.84 91.33 115.24 9.51 

45° 114.98 105.64 13.06 107.62 113.30 11.40 2 2 2 

50° 125.64 109.91 13.72 117.60 118.10 11.95 2 2 2 

35° 101.74 108.27 11.28 95.10 115.16 9.91 88.24 121.50 8.71 

40° 111.76 113.02 11.87 104.46 120.48 10.04 2 2 2 

45° 122.43 117.87 12.46 114.38 126.01 10.89 2 2 2 

50° 133.62 123.06 13.03 124.83 131.82 11.36 2 2 2 



CD 120 CM 90 CM 100 CM 110 CM 120 

Nominal Tons* 115.2 92.6 98.5 108.9 116.3 


Shipping Weight 6,866 lbs. 5,788 lbs. 6,205 lbs. 7,346 lbs. 7,358 lbs. 




COMPRESSOR(s) 

Nominal Horsepower 60 60 (1) 40 (2) 25 (2) 25 (2) 25 25/30 25/30 (2) 30 (2) 30 


Crankcase Heater Watts 200 200 100 100 100 100 100 100 



CONDENSER 

Face Area - Sq. Ft. 162 96 96 162 162 

Rows / Fins Per Inch (FPI) 3 /14 4 / 14 4 / 14 3 /14 3 / 14 

Total CFM 70,400 61,600 61,600 70.400 70,400 


Physical Data 

Qty. / Diameter 8 / 28" 8 / 28" 8 / 28" 8 / 28" 8 /28" 


RPM 1,100 1,100 1,100 1,100 1,100 

Tip Speed (FPM) 8,060 8,060 8,060 8,060 8,060 

Capacity Data

Model 


CM 122 

CM 130 

CM 140 

CM 150 

CM 160 




Saturated 

Suction 

Temperature 



35° 107.28 110.79 11.62 100.48 118.42 10.18 93.46 125.45 8.94 

40° 117.87 114.95 12.30 110.35 123.09 10.76 102.60 130.69 9.42 

45° 129.11 119.25 12.99 120.85 127.91 11.34 112.27 136.09 9.90 

50° 141.05 123.64 13.69 131.93 132.83 11.92 2 2 2 

35° 112.78 120.98 11.19 105.35 129.12 9.79 98.03 136.81 8.60 

40° 124.29 125.89 11.85 116.16 134.59 10.36 108.08 142.89 9.08 

45° 136.65 131.03 12.51 127.72 140.30 10.92 2 2 2 

50° 149.88 136.46 13.18 140.04 146.43 11.48 2 2 2 

35° 123.95 134.06 11.09 115.51 142.67 9.72 107.04 150.65 8.53 

40° 135.97 139.77 11.67 126.63 148.86 10.21 2 2 2 

45° 148.65 145.73 12.24 138.35 155.41 10.68 2 2 2 

50° 162.13 152.02 12.80 150.73 162.30 11.14 2 2 2 

35° 135.53 147.14 11.05 126.77 156.85 9.70 118.06 166.12 8.53 

40° 148.81 153.55 11.63 139.21 163.89 10.19 2 2 2 

45° 162.95 160.31 12.20 152.39 171.44 10.67 2 2 2 

50° 177.93 167.64 12.74 166.31 179.46 11.12 2 2 2 

35° 149.66 164.63 10.90 140.03 175.06 9.60 130.25 184.93 8.46 

40° 164.05 171.72 11.46 153.46 182.93 10.07 2 2 2 

45° 179.35 179.26 12.01 167.76 191.15 10.53 2 2 2 

50° 195.45 187.34 12.52 182.71 200.01 10.96 2 2 2 



CM 122 CM 130 CM 140 CM 150 CM 160 

Nominal Tons* 125.3 132.4 144 156.4 167.9 




Refrigerant Charge (R-22) 161 lbs. 167 lbs. 183 lbs. 209 lbs. 225 lbs. 


COMPRESSOR(s) 

Nominal Horsepower 25/35 25/35 30/35 30/35 (2) 35 (2) 35 35/40 35/40 (2) 40 (2) 40 

Oil Charge 296 oz. 296 oz. 312 oz. 312 oz. 320 oz. 320 oz. 402 oz. 402 oz. 484 oz. 484 oz. 



Liquid Line Connection - ODS 1 5/8" 1 5/8" 1 5/8" 1 5/8" 1 5/8" 1 5/8" 1 5/8" 1 5/8" 1 5/8" 

CONDENSER 

Face Area - Sq. Ft. 162 162 162 162 162 


Total CFM 97,200 97,200 97,200 90,000 105,000 


Physical Data 

Qty. / Diameter 12 / 28" 12 / 28" 12 / 28" 12 / 28" 16 / 28" 


RPM 1,100 1,100 1,100 1,100 1,100 

Tip Speed (FPM) 8,060 8,060 8,060 8,060 8,060 

Capacity Data 

15

Model 


16 

LS 3 

LS 5 

LS 8 

LS 9 

LS 10 

LS 13 

LS 15 

LD 10 

LD 15 

LD 18 

LD 20 

LD 26 

LD 30 

CS 5 

CS 8 

CS 10 

CS 15 

CS 20 

CS 25 

CS 30 

CS 35 

CS 40 

CS 50 

CS 60 

CD 10 

CD 15 

Compressor Fan Motors Single Power Supply Dual Power Supply Control 

Electrical 

RLA 

LRA 

HP Amps Unit Rec. Max. Unit Rec. Max. Amps 

Supply 

Qty 

#1 #2 #3 #4 #1 #2 #3 #4 (ea) (ea) MCA Fuse Fuse MCA Fuse Fuse 115 V 

230/1 17.9 — — — 88 — — — 

3.3 26 30 40 — — — 0.5 

208-230/3 11.4 — — — 77 — — — 1 0.5 2.2 17 20 25 — — — 0.5 

460-3 5.7 — — — 39 — — — 1 9 10 15 — — — 0.5 

230/1 32.1 — — — 169 — — — 

3.3 44 50 75 — — — 0.5 

208-230/3 19.3 — — — 123 — — — 1 .05 2.2 27 30 45 — — — 0.5 

460-3 10.0 — — — 62 — — — 1 14 15 20 — — — 0.5 

208-230/3 27.2 — — — 189 — — — 4.6 39 45 60 — — — 0.5 

1 1 

460-3 14.3 — — — 99 — — — 2.3 21 25 35 — — — 0.5 

208-230/3 34.3 — — — 232 — — — 4.6 48 60 80 — — — 0.5 

1 1 

460-3 17.5 — — — 125 — — — 2.3 25 30 40 — — — 0.5 

208-230/3 38.6 — — — 278 — — — 4.6 53 60 90 — — — 0.5 

1 1 

460-3 18.9 — — — 127 — — — 2.3 26 30 40 — — — 0.5 

208-230/3 47.1 — — — 350 — — — 4.6 69 80 110 — — — 0.5 

2 1 

460-3 25,0 — — — 158 — — — 2.3 36 45 60 — — — 0.5 

208-230/3 55.2 — — — 425 — — — 4.6 79 100 125 — — — 0.5 

2 1 

460-3 27.2 — — — 187 — — — 2.3 39 45 60 — — — 0.5 

230/1 32.1 32.1 — — 169 169 — — 

3.3 79 90 110 — — — 0.8 

208-230/3 19.3 19.3 — — 123 123 — — 2 .05 2.2 48 50 60 — — — 0.8 

460-3 10.0 10.0 — — 62 62 — — 1 25 30 35 — — — 0.8 

208-230/3 27.2 27.2 — — 189 189 — — 4.6 71 75 90 — — — 0.8 

2 1 

460-3 14.3 14.3 — — 99 99 — — 2.3 37 40 50 — — — 0.8 

208-230/3 34.3 34.3 — — 232 232 — — 4.6 87 100 110 — — — 0.8 

2 1 

460-3 17.5 17.5 — — 125 125 — — 2.3 44 50 60 — — — 0.8 

208-230/3 38.6 38.6 — — 278 278 — — 4.6 97 110 125 — — — 0.8 

2 1 

460-3 18.9 18.9 — — 127 127 — — 2.3 48 50 60 — — — 0.8 

208-230/3 47.1 47.1 — — 350 350 — — 4.6 125 150 150 — — — 0.8 

4 1 

460-3 25.0 25.0 — — 158 158 — — 2.3 66 75 90 — — — 0.8 

208-230/3 55.2 55.2 — — 425 425 — — 4.6 143 150 200 — — — 0.8 

4 1 

460-3 27.2 27.2 — — 187 187 — — 2.3 71 75 90 — — — 0.8 

208-230/3 22.3 — — — 120 — — — 2.2 31 35 50 — — — 0.5 

1 0.5 

460-3 10.5 — — — 60 — — — 1 15 20 25 — — — 0.5 

208-230/3 32.0 — — — 169 — — — 4.6 45 60 75 — — — 0.5 

1 1 

460-3 14.1 — — — 85 — — — 2.3 20 25 30 — — — 0.5 

208-230/3 43.6 — — — 215 — — — 4.6 64 75 100 — — — 0.5 

2 1 

460-3 20.0 — — — 106 — — — 2.3 30 35 50 — — — 0.5 

208-230/3 59.6 — — — 275 — — — 4.6 84 100 125 — — — 0.5 

2 1 

460-3 29.0 — — — 138 — — — 2.3 41 50 60 — — — 0.5 

208-230/3 66.0 — — — 308 — — — 4.6 92 110 150 — — — 0.9 

2 1 

460-3 33.0 — — — 154 — — — 2.3 46 60 75 — — — 0.9 

208-230/3 82.2 — — — 428 — — — 4.6 112 150 175 — — — 0.9 

2 1 

460-3 41.1 — — — 214 — — — 2.3 56 70 90 — — — 0.9 

208-230/3 94.0 — — — 470 — — — 4.6 132 175 225 — — — 0.9 

3 1 

460-3 47.0 — — — 235 — — — 2.3 66 80 110 — — — 0.9 

208-230/3 125.1 — — — 565 — — — 4.6 171 200 300 — — — 0.9 

3 1 

460-3 62.6 — — — 283 — — — 2.3 86 100 150 — — — 0.9 

208/3 150.0 — — — 754 — — — 

4.6 206 250 350 — — — 2 

208-230/3 142.0 — — — 594 — — — 4 1 4.6 196 250 300 — — — 2 

460-3 71.0 — — — 297 — — — 2.3 98 125 150 — — — 2 

208-230/3 180.0 — — — 1070 — — — 4.6 244 300 400 — — — 2 

4 1 

460-3 90.0 — — — 535 — — — 2.3 122 150 200 — — — 2 

208-230/3 224.0 — — — 1070 — — — 4.6 308 400 500 — — — 2 

6 1 

460-3 112.0 — — — 535 — — — 2.3 154 200 250 — — — 2 

208-230/3 22.3 22.3 

120 120 — — 2.2 55 60 75 — — — 2 

2 0.5 

460-3 10.5 10.5 

60 60 — — 1 26 30 35 — — — 2 

208-230/3 32.0 32.0 

169 169 — — 4.6 82 90 110 — — — 2 

2 1 

460-3 14.1 14.1 

85 85 — — 2.3 37 40 50 — — — 2 

— 

— 

— 

— 

— 

— 

— 

— 

Electrical Data 

NOTES: 1 - Voltage limits are as follows: Normal Voltage Min. Max. 

208 187 229 

230 208 253 

460 414 506 

2 - MCA (Minimum Circuit Ampacity) is calculated based on all concurrent loads applied 

to the circuit. (Largest load x 1.25 + 100% of all other loads excluding the control 

circuit.) Use copper conductors only. 

3 - “Max Fuse” refers to the maximum size dual element fuse allowed. Fuse clips 

should be provided based on this rating. (Largest load x 2.25 + 100% of all other loads.)

Electrical Data 

Compressor Fan Motors Single Power Supply Dual Power Supply Control 

Model Electrical 

RLA 

LRA 

HP Amps Unit Rec. Max. Unit Rec. Max. Amps 

20AO Supply 

Qty 

#1 #2 #3 #4 #1 #2 #3 #4 (ea) (ea) MCA Fuse Fuse MCA Fuse Fuse 115 V 

CD 20 

208-230/3 43.6 43.6 — — 215 215 — — 2.2 107 125 150 — — — 2 

4 0.5 

460-3 20.0 20.0 — — 106 106 — — 1 49 60 60 — — — 2 

CD 30 

208-230/3 59.6 59.6 — — 275 275 — — 4.6 153 175 200 — — — 2 

4 1 

460-3 29.0 29.0 — — 138 138 — — 2.3 75 80 100 — — — 2 

CD 40 

208-230/3 66.0 66.0 — — 308 308 — — 4.6 167 200 225 — — — 2 

4 1 

460-3 33.0 33.0 — — 154 154 — — 2.3 84 90 110 — — — 2 

CD 45 

208-230/3 82.2 66.0 — — 428 308 — — 4.6 188 225 250 — — — 2 

4 1 

460-3 41.1 33.0 — — 214 154 — — 2.3 94 110 125 — — — 2 

CD 50 

208-230/3 82.2 82.2 — — 428 428 — — 4.6 204 225 250 — — — 2 

4 1 

460-3 41.1 41.1 — — 214 214 — — 2.3 102 110 125 — — — 2 

CD 55 

208-230/3 94.0 82.2 — — 470 428 — — 4.6 228 250 300 — — — 2 

6 1 

460-3 47.0 41.1 — — 235 214 — — 2.3 114 125 150 — — — 2 

CD 60 

208-230/3 94.0 94.0 — — 470 470 — — 4.6 240 300 300 — — — 2 

6 1 

460-3 47.0 47.0 — — 235 235 — — 2.3 120 150 150 — — — 2 

CD 65 

208-230/3 125.1 94.0 — — 565 470 — — 4.6 278 350 400 — — — 2 

6 1 

460-3 62.6 47.0 — — 283 235 — — 2.3 140 150 200 — — — 2 

CD 70 

208-230/3 125.1 125.1 — — 565 565 — — 4.6 310 350 400 — — — 2 

6 1 

460-3 62.6 62.6 — — 283 283 — — 2.3 155 175 200 — — — 2 

208/3 150.0 125.1 — — 754 565 — — 

4.6 341 400 450 — — — 3 

CD 75 230/3 142.0 125.1 — — 594 565 — — 6 1 4.6 331 400 450 — — — 3 

460-3 71.0 62.6 — — 297 283 — — 2.3 166 200 225 — — — 3 

208/3 150.0 150.0 — — 754 754 — — 

4.6 — — — 206 250 350 4 

CD 80 230/3 142.0 142.0 — — 594 594 — — 8 1 4.6 357 400 500 — — — 4 

460-3 71.0 71.0 — — 297 297 — — 2.3 179 200 225 — — — 4 

208/3 180.0 150.0 — — 754 1070 — — 

4.6 — — — 244 300 400 4 

CD 90 208-230/3 180.0 142.0 — — 594 1070 — — 8 1 4.6 — — — 244 300 400 4 

460-3 90.0 71.0 — — 297 535 — — 2.3 202 225 300 — — — 4 

CD 100 208-230/3 180 180 — — 1070 1070 — — 4.6 — — — 244 300 400 4 

8 1 

460-3 90 90 — — 535 535 — — 2.3 221 250 300 — — — 4 

CD 110 208-230/3 224 180 — — 1070 1070 — — 4.6 — — — 299 350 500 4 

8 1 

460-3 112 90 — — 535 535 — — 2.3 249 275 350 — — — 4 

CD 120 208-230/3 224 224 — — 1070 1070 — — 4.6 — — — 299 350 500 4 

8 1 

460-3 112 112 — — 535 535 — — 2.3 271 300 350 — — — 4 

208/3 150.0 82.2 82.2 — 754 428 428 — 

4.6 — — — 206 250 350 4 

CM 90 230/3 142.0 82.2 82.2 — 594 428 428 — 8 1 4.6 379 450 500 — — — 4 

460-3 71.0 41.1 41.1 — 297 214 214 — 2.3 190 200 250 — — — 4 

CM 100 208-230/3 82.2 82.2 82.2 82.2 428 428 428 428 4.6 — — — 204 225 275 4 

8 1 

460-3 41.1 41.1 41.1 41.1 214 214 214 214 2.3 194 200 225 — — — 4 

CM 110 208-230/3 94.0 94.0 82.2 82.2 470 470 428 428 4.6 — — — 219 250 300 4 

8 1 

460-3 47.0 47.0 41.1 41.1 235 235 214 214 2.3 207 225 250 — — — 4 

CM 120 208-230/3 94.0 94.0 94.0 94.0 470 470 470 470 4.6 — — — 230 250 300 4 

8 1 

460-3 47.0 47.0 47.0 47.0 235 235 235 235 2.3 219 225 250 — — — 4 


12 1 

460-3 62.6 62.6 41.1 41.1 283 283 214 214 2.3 251 275 300 — — — 4 


12 1 

460-3 62.6 62.6 47.0 47.0 283 283 235 235 2.3 263 275 300 — — — 4 


12 1 

460-3 62.6 62.6 62.6 62.6 283 283 283 283 2.3 294 350 350 — — — 4 

208/3 150.0 150.0 125.1 125.1 754 754 565 565 

4.6 — — — 341 400 450 6 

CM 150 230/3 142.0 142.0 125.1 125.1 594 594 565 565 12 1 4.6 — — — 331 400 450 6 

460-3 71.0 71.0 62.6 62.6 297 297 283 283 2.3 313 350 350 — — — 6 

208/3 150.0 150.0 150.0 150.0 754 754 754 754 

4.6 — — — 375 400 500 7 

CM 160 230/3 142.0 142.0 142.0 142.0 594 594 594 594 16 1 4.6 — — — 357 400 500 7 

460-3 71.0 71.0 71.0 71.0 297 297 297 297 2.3 339 350 400 — — — 7 

NOTES: 1 - Voltage limits are as follows: Normal Voltage Min. Max. 

208 187 229 

230 208 253 

460 414 506 

2 - MCA (Minimum Circuit Ampacity) is calculated based on all concurrent loads applied to the 

circuit. (Largest load x 1.25 + 100% of all other loads excluding the control circuit.) Use copper 

conductors only. 

3 - “Max Fuse” refers to the maximum size dual element fuse allowed. Fuse clips should be 

provided based on this rating. (Largest load x 2.25 + 100% of all other loads.) 

4 - Dual power supply amperages are shown for circuit with highest amperage where applicable. 

17

Typical Wiring Diagram 

LEGEND 

CD UNITS 

18

Dimensional Data 

B 

L 

B 

C 

W 

C 

Recommended Minimum 

Service Clearance 

Compressor 

Access Panel 

3 3/4" 

Electrical 

Entrance 

Hinged 

Control 

Panel 

H 

1 1/8" 1 1/8" 

W 

2.5"ø Diameter Rigging Holes 

* 5/8"ø Diameter Mounting Holes 

3 1/2" D 

3 1/2" 

L 

MODEL NUMBER 

W L H 

UNIT DIMENSIONS 

Fans 

Qty./Dia. 



20AO LS 3 34" 76" 46" 1 / 24" 60" 34" — 





20AO LS 13 34" 120" 46" 2 / 28" 60" 34" 56.5" 

20AO LS 15 34" 120" 46" 2 / 28" 60" 34" 56.5" 

B 

C 

D 

20AO CS 5 34" 76" 46" 1 / 24" 60" 34" — 

20AO CS 8 34" 87" 46" 1 / 28" 60" 34" — 

20AO CS 10 34" 120" 46" 2 / 28" 60" 34" 56.5" 

20AO CS 15 34" 120" 46" 2 / 28" 60" 34" 56.5" 

20AO CS 20 34" 120" 46" 2 / 28" 60" 34" 56.5" 

20AO CS 25 34" 143" 53" 2 / 28" 60" 34" 68" 


20AO CS 35 44" 180" 53" 3 / 28" 60" 44" 86.5" 

20AO CS 40 44" 180" 53" 4 / 28" 60" 44" 86.5" 



19


B 

L 

B 

C 

W 

W 

C 



Compressor 

Access Panel 

3 3/4" 

Electrical 

Hinged 

Entrance 

Control Panel 

H 

1 1/8" 1 1/8" 3 1/2" D 

3 1/2" 

W 

L 


* 5/8"ø Diameter Mounting Holes 

MODEL NUMBER 

W L H 


Fans 

Qty./Dia. 



20AO LD 10 68" 76" 63" 2 / 24" 60" 68" — 



20AO LD 20 68" 87" 63" 2 / 28" 60" 68" — 

20AO LD 26 68" 123" 63" 4 / 28" 60" 68" 56.5" 

20AO LD 30 68" 123" 63" 4 / 28" 60" 68" 56.5" 

B 

C 

D 

20 

20AO CD 10 68" 87" 63" 2 / 24" 60" 68" — 

20AO CD 15 68" 87" 63" 2 / 28" 60" 68" — 

20AO CD 20 68" 123" 63" 4 / 24" 60" 68" 56.5" 

20AO CD 30 68" 123" 63" 4 / 28" 60" 68" 56.5" 

20AO CD 40 68" 146" 63" 4 / 28" 60" 68" 68" 








20AO CD 80 88" 180" 63" 8 / 28" 60" 88" 86.5"


B 

L 

B 

C 

W 

C 



Compressor 

Access Panel 

3 3/4" 

Hinged 

Control Panel 

H 

1 1/8" 1 1/8" 

W 

3 1/2" D 

D 

3 1/2" 

L 

* 


5/8"ø Diameter Mounting Holes 

MODEL NUMBER 

W L H 


Fans 

Qty./Dia. 






20AO CD 120 96" 264" 63" 8 / 28" 60" 96" 85.67" 

B 

C 

D 

20AO CM 90 88" 180" 63" 8 / 28" 60" 88" 57.67" 



20AO CM 120 96” 264" 63" 8 / 28" 60" 96" 85.67" 






21

Installation and Application 

Units are designed for outdoor installation and 

must be installed to allow unrestricted air flow. 

Unit must be mounted on a level, solid surface to 

minimize vibration and noise. 

The following must be observed: 

1. Wiring to the unit to follow recommendations 

on unit wiring diagram, and in accordance with all 

state and local codes. 

2. Piping to be sized on velocities and pressure 

drop at design conditions, and not be based on 

condensing unit or evaporator connection sizes. 

3. All piping to be type “K” or “L” and installed in 

accordance with good piping practices. Interior 

of all piping to be clean and dry, and a nitrogen 

purge used during soldering. 

4. If units are mounted on vibration isolator bases, 

all lines must have vibrasorbers installed and 

properly secured. 

5. After piping is completed, a good vacuum pump 

must be used to evacuate the refrigerant system 

before charging with refrigerant. 

6. After system charging, a qualified service 

technician should put the system into operation. 

All safety controls should be functioned to insure 

that controls are properly adjusted and functional. 

All operating controls should be cycled to 

determine that control points are correct for design 

requirements. 

NOTE: Consult IOM manuals for further information on 

Condensing Unit Installation and Application. 

Sequence Of Operation 

The Series 20 Air Cooled Condensing Units are 

standard with the following safety and operation 

controls and features: 

A. High Pressure Failure Control (Manual Reset) 

B. Low Pressure Operating Control (Auto Pumpdown) 

C. Oil Failure Control (Manual Reset) - C Series Only 

D. Compressor Crankcase Heater 

E. Compressor and Condenser Fan Motor Contactors 

F. Compressor Fusing 

G. Control Circuit Fusing 

H. Fan Cycling Control for Low Ambient Operation 

The following sequence assumes a single compressor unit. 

On an initial start-up, with the application temperature 

above the temperature control setting, typical 

sequence is as follows: 

When the temperature control (remote thermostat) 

normally open contacts close, the liquid line solenoid 

will be energized, and liquid refrigerant will flow into 

evaporator circuit. As low side pressure builds to 

set point of low pressure control (auto pumpdown) 

the flow pressure control will make and energize 

the compressor and compressor will run. Discharge 

pressure will rise and condenser fans will be energized 

as discharge pressure reaches set point of fan cycle 

control. 

As the cooling requirements are satisfied, the 

temperature control will open and de-energize the 

liquid line solenoid. The flow of liquid refrigerant 

will stop and compressors will pump the remaining 

refrigerant out of the evaporator circuit. 

When the low side pressure reaches the low set point 

of low pressure control, the control will open and deenergize 

compressor contactor and compressor will 

cycle off. Compressor will remain off until additional 

cooling is required and a repeat of this sequence will 

be followed. 

On dual compressor units, the second compressor 

circuit will follow the same sequence as outlined 

above on call of the second step of temperature 

control. 

On multiple compressor (3 or more) units, two 

independent circuits are utilized and sequence will 

be identical to a dual compressor unit. The only 

difference is that each compressor will be cycled to 

give steps of control equal to number of compressors. 

Lead compressors of a circuit will operate on 

pumpdown control and lag compressor of circuit 

will be controlled directly by step of temperature or 

pressure control. 

Compressor and fan contactors are wired in series 

with all safety controls and a failure of any safety 

control will be de-energize compressor and fans 

without pumpdown. Safety controls require manual 

reset and cause of failure should be determined and 

corrected before returning unit to operation. 

22

Low Ambient Operation 

LOW AMBIENT OPERATION - Air conditioning 

systems utilizing air cooled condensing 

units when operated at ambient temperatures 

well below design, will require some type of 

control to stabilize high side pressure. In order 

to maintain sufficient high side pressure, the 

condenser capacity must be reduced in response 

to decreasing head pressure. This may be 

accomplished by either reducing the air flow across 

the condenser, or reducing the effective condenser 

surface by “flooding” the condenser coil with liquid 

refrigerant. Air reduction by fan staging is standard 

on all air cooled condensing units, with condenser 

flooding available as an option. 

PRESSURE SETTINGS 

R-22 (PSIG) 

CONTROL 

CUT IN CUT OUT 

High Pressure Manual 400 

Low Pressure 50 20 

Freeze Control Manual 54 

Unloader “A” 60 * 

Unloader “B” 55 * 

Fan Cycle/Delay 250 200 

2 Step Step 1 220 200 

Fan Cycle Step 2 250 230 

Step 1 220 200 

3 Step 

Step 2 230 210 

Fan Cycle 

Step 3 250 230 

Step 1 220 200 

4 Step Step 2 230 210 

Fan Cycle Step 3 240 230 

Step 4 250 240 

* Adjusted per application requirements. 

FAN CYCLING +20°F (Standard) - Fan 

cycling operates by staging condenser fans in 

response to decreasing high side pressure. This 

system is normally satisfactory for unit operation 

down to ambients of 20°F. An additional feature of 

this system is the energy savings realized by having 

fans inoperative during low load or low ambient 

conditions. 

The staging arrangement and pressure settings are 

as shown. Numerals indicate the pressure steps at 

which the fans are staged. 

FAN CYCLING 0°F (OPTIONAL) - In 

addition to the cycling controls, a “positive start” 

electrical circuit is added to insure system operation. 

Normal operating sequence is for compressor 

operation to be obtained when the low pressure 

switch closes upon an increase in low side pressure. 

Since low ambients may preclude sufficient pressure 

being obtained, this option momentarily shunts the 

low pressure switch, enabling the compressor to operate. At 

the end of 90 seconds, the timer opens the shunt, returning 

control to the low pressure switch. 

FLOOD CONTROL B20 (Optional) - B20 flood 

control utilizes a valve (or valves) mounted, piped and 

adjusted to regulate condensing pressure by flooding the 

condenser coil with liquid refrigerant. This option does require 

additional refrigerant (flooding charge) in the system and 

liquid receivers. 

During the normal cycle, the valve will prevent flow from the 

discharge line into the receiver, and allow free flow of liquid 

from the condenser. As the receiver pressure drops below 180 

PSIG the valve will modulate allowing discharge gas to enter 

the receiver, and restrict flow from the condenser. The valve 

continues to modulate in this manner, maintaining a constant 

receiver pressure, and coil flooding level to maintain a 

minimum 180 PSIG liquid pressure for proper expansion valve 

operation. In addition, a positive start electrical circuit will 

shunt around the low pressure (pumpdown) control and force 

the compressor to run whenever a call for cooling is initiated. 

A B C 

1 1 2 1 2 3 

D 

1 2 3 4 

E F G 

1 

1 

H 

1 2 3 4 

1 2 3 4 

1 2 

1 2 

J 

1 1 2 2 3 3 4 4 

1 1 2 2 3 3 4 4 

1 2 3 

1 2 3 

I 

1 1 2 2 3 4 

1 1 2 2 3 4 

A B C D E F G H I J 

LS3 LS13 CS30 CS40 LD10 LD26 CS60 CD80 CM122 CM160 

LS5 LS15 CS35 LD15 LD30 CD55 CD90 CM130 

LS8 CS10 LD18 CS50 CD60 CD100 CM140 

LS9 CS15 LD20 CD20 CD65 CD110 CM150 

LS10 CS20 CD10 CD30 CD70 CD120 

CS5 CS25 CD15 CD40 CD75 CM90 

CS8 CD45 CM100 

CD50 CM110 

CM120 

23

Engineering Specifications 

CABINET 

Units shall be constructed of mill galvanized sheet steel 

having formed frame members and removable access 

panels. Units shall have a formed steel perimeter 

base rail, except for CD90 and larger units shall have 

structural steel welded bases. All refrigerant containing 

vessels are to be constructed in accordance with ANSI 

B9.1 code. Each electrical component is to be U.L. 

approved and applied in accordance with its appropriate 

usage. All wiring and electrical construction shall be in 

accordance with the NEC. Units shall be ETL certified 

and labeled. Each unit shall be given a complete factory 

electrical run test. 

COMPRESSOR(S) 

All CS, CD and CM models shall have accessible hermetic 

design motor/compressor unit having all rotating 

parts statically and dynamically balanced, full pressure 

lubrication, automatically reversible oil pump, oil charge, 

suction and oil strainer, and sight glass for visual oil 

check. Compressor to have crankcase heater, suction 

and discharge service valve. Compressor shall be rated 

in accordance with ASHRAE 23. Motor shall be suction 

gas cooled. Compressor shall contain inherent overload 

and overheat protector, consisting of winding embedded 

sensors. Four and six cylinder compressors shall 

be connected to a solid state protection module. Protection 

module shall open all three phases in the event of 

overload in one phase. External thermal protection shall 

not be acceptable. 

All LS and LD models shall incorporate hermetic 

sealed scroll compressors having all rotating parts 

statically and dynamically balance with full pressure 

lubrication and charged with oil. Compressor to have 

crankcase heater, suction and discharge service valve. 

Compressor shall be rated in accordance with ASHRAE 

23. Motor shall be suction gas cooled. Compressor 

shall contain inherent overload and overheat protector 

consisting of winding embedded sensors. 

CONDENSER(S) 

The condenser coil shall be constructed of 1/2” O.D. 

copper tube with die formed tempered aluminum plate 

fins. Fins are formed with full collars and tubes are 

mechanically expanded for full contact and optimum 

heat transfer. Fin collar to completely cover tube 

surface. Condenser coils shall be tested to 400 PSIG. 

Casings are mill galvanized 16-gauge steel. Tube 

sheets are die formed and full collared for the tube 

support. Condenser coils shall be circuited to match 

refrigerant circuits and baffled to prevent crossover 

flow. Headers are constructed of heavy wall 

seamless copper tubing. 

SUB COOLING COIL 

A separate sub cooling coil, integral with the main 

condenser coil, shall be provided for each circuit. 

CONDENSER FANS 

Fans are direct drive propeller type with aluminum 

blades. Air discharge to be vertical to minimize noise 

generation and air recirculation. Fan to rotate within 

a formed (spun) venturi and shall be protected with 

epoxy powder coated fan guard. Condenser plenum 

shall be compartmentalized to prevent air crossover. 

Unit shall be equipped with a fan cycle control to 

allow mechanical cooling operation at ambient as 

low as +20°F. Motors are three-phase, 1140 RPM 

specifically designed for vertical shaft, direct drive 

fan application and utilize permanently lubricated 

ball bearings. Motor to contain inherent, overload 

protection. Fan/motor assembly to be mounted in 

steel rod mounting bracket to reduce air turbulence 

and vibration. 

REFRIGERATION CIRCUIT 

Single or dual compressor models shall have totally 

independent refrigeration circuits with a liquid line 

shut-off and charging connection. On multiple 

compressor machines, an oil equalization system 

utilizing an oil reservoir, oil level regulator, and a 

regulating valve shall be employed. 

CONTROL CIRCUIT AND PANEL 

Shall include all safety and operating controls 

required to meet ARI, UL and NEC requirements. 

Controls to include branch and sub-circuit fusing, 

contactors, relays and pressure controls. Unit to 

operate on demand cycle pumpdown control and 

have low charge protection through a pressure 

sensing device. All safety controls to be manual 

reset. Panel to be constructed to NEMA 3R 

requirements and UL 508 listed and labeled.

Series 20 Air Cooled Condensing Units - Titan Air

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