Trane SS-PRC005 User Manual
Split System Condensing
Units and Remote Chillers
20 to 120 Tons
50 and 60 Hz
November 2001
SS-PRC005-EN
Introduction
©American Standard Inc. 2001
T rane 20 through 120-ton air-cooled
condensing units are the leaders in the
split system marketplace. Designed for
efficiency , reliability and flexibility , the
T rane units have the most advanced
design in the industry.
Twenty through 120-ton units feature
the Trane 3-D™ Scroll compressor, solidstate controls and Trane’s exclusive
Pac ked Stock Plus availability for quick
shipment. These inno vations make an
already proven product even better!
SS-PRC005-EN
Contents
Introduction
Featur es and Benefits
Application Considerations
Selection Procedur e
Model Number Description
General Data
P erformance Data
Performance Adjustment Factors
Controls
Electric P o wer
Dimension and Weights
Mechanical Specifications
2
4
6
7
8
10
12
11
25
27
29
46
SS-PRC005-EN
3
Trane 3-D Scr oll Compressor
Simple Design with 70% Fewer Par ts
Fewer parts than an equal capacity
reciprocating compressor means
significant reliability and efficiency
benefits. The single orbiting scroll
eliminates the need for pistons,
connecting rods, wrist pins and valves.
Fewer parts lead to increased reliability .
Fewer moving parts, less rotating mass
and less internal friction means greater
efficiency than reciprocating
compressors.
The Trane 3-D Scroll pro vides important
reliability and efficiency benefits. The 3-D
Scroll allows the orbiting scrolls to touch
in all three dimensions, forming a
completely enclosed compression
chamber whic h leads to increased
efficiency . In addition, the orbiting scrolls
only touch with enough force to create a
seal; there is no wear between the scroll
plates. The fixed and orbiting scrolls are
made of high strength cast iron which
results in less thermal distortion, less
leakage, and higher efficiencies. The
most outstanding feature of the 3-D
Scroll compressor is that slugging will
not cause failure. In a reciprocating
compressor, however , the liquid or dir t
can cause serious damage.
Low T orque Variation
The 3-D Scroll compressor has a very
smooth compression cycle; torque
variations are only 30 percent of that
produced by a reciprocating compressor.
This means that the scroll compressor
imposes very little stress on the motor
resulting in greater reliability. Low torque
variation reduces noise and vibration.
Suction Gas Cooled Motor
Compressor motor efficiency and
reliability is further optimized with the
latest scroll design. Cool suction gas
keeps the motor cooler for longer life
and better efficiency.
Proven Design Through T esting and
Research
With over twenty years of development
and testing, Trane 3-D Scroll
compressors have undergone more
than 400,000 hours of laboratory testing
and field operation. This work combined
with over 25 patents makes Trane the
Features and Benefits
worldwide leader in air conditioning
scroll compressor technology .
V oltage P o wer Supply
20 through 120-ton units have four
voltage options in 200, 230, 460 and
575, resulting in improved stock
coverage.
Passive Manif olding
T rane of fers a parallel manifolding
scheme that uses no moving
mechanical parts. This feature assures
continuous oil return, again providing
greater system reliability. And greater
reliability means optimal performance
over the life of the unit.
System Control Options
T rane of fers four system control
options on 20 through 60-ton units and
three system control options on the 80
through 120-ton units, each using
solid- state electronics. These options
allow the unit to be ordered only with
the controls needed. In addition, they
come factory installed, saving field
installation costs.
Coil Frost Pr otection
T rane of fers FROSTA T™ with the V A V
system control option on the 20
through 120-ton units. FROST AT is the
industry’s most reliable method of coil
frost protection and assures that your
system will provide energy efficient
comfort at part load conditions.
Remote Evapor ative Liquid Chiller
(EVP) Control Option
This option allows chilled water to be
generated remotely from the
condensing section.
SS-PRC005-EN4
Features and
Benefits
20 Through 60-T on Units
Standard Featur es
• Trane 3-D™ Scroll compressors
• Factory-installed Discharge and Liquid
Line Service V alves
• Passive manifolding for 3-D Scroll
compressors
• Standard ambient operating range
40°F to 115°F
• 14-gauge galvaniz ed steel frame
• Louvered panels for coil protection
• Slate gray air -dry paint finish (exceeds
672 hour salt spray test in accordance
with ASTM B1 17)
Optional Features
• Non-fused disconnect
• Low ambient option
• Hot gas bypass to the evaporator inlet
• Suction service valve
• Pressure gauges
• Return air sensor
• Copper finned condenser coil
• Flow switch
• Unit spring isolators
• Neoprene-in-shear isolators
• UL/CSA approval (not available for 50
Hz)
• Pac ked Stock Plus program
• Extended Compressor W ar ranty
• Special coil coating for corrosion
resistance
• Four systems control options
80 Through 120-T on Units
Standard Featur es
• Trane 3-D Scroll compressors
• Factory-installed discharge and liquid
line service valves
• Standard ambient operating range 40°F
to 115°F
• Independent refrigerant circuits
• 14-gauge g alvanized steel frame
• Louvered panels for coil protection
• Slate gray air -dry paint finish (exceeds
672 hour salt spray test in accordance
with ASTM B1 1 7)
Optional Features
• Low ambient option
• Hot gas bypass to the evaporator inlet
• Suction service valve
• Pressure gauges
• Copper finned condenser coil
• Spring isolators
• Flow switch
• UL/CSA approval
• Pac ked Stoc k Plus A vailability
• Extended Compressor W ar ranty
• Special coil coating for corrosion
resistance
• Three system control options
Pac ked St oc k Plus
T rane 20 through 120-ton air-cooled
condensing units are available through
the most flexible packed stoc k program
in the industry. T rane knows that you
want your units on the job site, on time,
with the options you need.
Pac ked Stock Plus pro vides you with the
controls and options you need — options
like hot gas bypass, isolators and
refrigerant gauges. You no longer have to
settle for a basic unit requiring many field
installed options to meet your job
schedule. Now , you can get a customiz ed
unit from the factory in record time.
The Trane Pa c ked Stoc k Plus program
provides more control over unit selection
and scheduling than ever before. T rane
wants to make it easy for you to do
business with them.
5SS-PRC005-EN
Application Considerations
Certain application constraints should be
considered when sizing, selecting and
installing Trane air-cooled condensing
units. Unit reliability is dependent upon
these considerations. Where your
application varies from the guidelines
presented, it should be reviewed with the
local Trane sales engineer .
Unit Sizing
Unit capacities are listed in the
performance data section on pages 11 to
24. Intentionally oversizing a unit to
assure adequate capacity is not
recommended. Erratic system operation
and excessive compressor cycling are
often a direct result of an oversized
condensing unit. In addition, an
oversized unit is usually more expensive
to purchase, install and operate. If
oversizing is desired, consider using two
units.
Unit Placement
A base or foundation is not required if
the selected unit location is level and
strong enough to support the unit’s
operating weight (as listed on page 45).
Isolation and Sound Emission
The most effective form of isolation is to
locate the unit away from any sound
sensitive area. Structurally transmitted
sound can be reduced by using spring or
rubber isolators. The isolators are
effective in reducing the low frequency
sound generated by compressors and,
therefore, are recommended for sound
sensitive installations. An acoustical
engineer should always be consulted on
critical applications.
For maximum isolation effect, the
refrigeration lines and electrical conduit
should also be isolated. Use flexible
electrical conduit. State and local codes
on sound emissions should always be
considered. Since the environment in
which a sound source is located affects
sound pressure, unit placement must be
carefully evaluated.
Servicing
Adequate clearance for compressor
servicing should be provided.
Recommended minimum space
envelopes for servicing are located in the
dimensional data section of this catalog
and can serve as guidelines for providing
adequate clearance. The minimum space
envelopes also allow for control panel
door swing and rountine maintenance
requirements. Local code requirements
may take precedence.
Unit Location
Unobstructed flow of condenser air is
essential for maintaining condensing
unit capacity and operating efficiency .
When determining unit placement,
careful consideration must be given to
assure proper air flow across the
condenser heat transfer surface. Failure
to heed these considerations will result
in warm air recirculatioin and coil air
flow starvation.
Warm air recirculation occurs when
discharge air from the condenser fans is
recycled back at the condenser coil inlet.
Coil starvation occurs when free air flow
to the condenser is restricted.
Both warm air recirculation and coil
starvation cause reductions in unit
efficiency and capacity . In addition, in
more severe cases, nuisance unit
shutdowns will result from exessive
head pressures. Accurate estimates of
the degree of efficiency and capacity
reduction are not possible due to the
unpredictable effect of varying winds.
When hot gas bypass is used, reduced
head pressure increases the minimum
ambient condition for proper operation.
In addition, wind tends to further reduce
head pressure. Therefore, it is advisable
to protect the air -cooled condensing unit
from continuous direct winds exceeding
10 miles per hour.
Debris, trash, supplies, etc., should not
be allowed to accumulate in the vicinity
of the air -cooled condensing unit. Supply
air movement may draw debris between
coil fins and cause coil starvation.
Special consideration should be given to
units operating in low ambient
temperatures. Condenser coils and fan
discharge must be kept free of snow and
other obstructions to permit adequate air
flow for satisfactory unit operation.
Effect of Altitude on Capacity
Condensing unit capacities given in the
performance data tables on pages 11 to
24 are at sea level. At elevations
substantially above sea level, the
decreased air density will decrease
condenser capacity and, therefore, unit
capacity and efficiency. The adjustment
factors in Table PAF -1 can be applied
directly to the catalog performance data
to determine the unit’s adjusted
performance.
Ambient Considerations
Start-up and operation at lower
ambients requires sufficient head
pressure be maintained for proper
expansion valve operation. At higher
ambients, excessive head pressure may
result. Standard operating conditions are
40°F to 115°F. With a low ambient
damper, operation down to 0°F is
possible. Minimum ambient
temperatures are based on still
conditions (winds not exceeding five
mph). Greater wind velocities will result
in increased minimum operating
ambients. Units with hot gas bypass
have a minimum operating ambient
temperature of 10°F. For proper
operation outside these
recommendations, contact the local
T rane sales of fice.
Coil Frost Pr otection
FROST AT™ is standard on condensing
units when the VAV option is ordered.
FROST AT consists of a ship-with
thermostat for field installation on the
suction line. A timer is also factoryinstalled to avoid short cycling. FROSTAT
cycles the compressor off when the
suction line is below 30°F. Refer to
S/S-EB-43 for more detail.
When hot gas valves must be used on 20
to 120-ton units, they can be ordered as
a miscellaneous option. 20 to 30-ton
units require one valve; 40 to 60-ton
units also require one valve except when
no system control option is selected; this
option requires two valves. 80 to 120-ton
units require one valve when Supply Air
VAV control is selected. Two valves are
required on all other 80 to 120-ton
control options.
Refriger ant Piping
Special consideration must always be
given to oil return. Minimum suction gas
velocities must always be maintained for
proper oil return. Utilize appropriate
piping tools for line sizing such as the
CDS Refrigerant Piping Program. Fo r
special applications, call Clarksville
Product Support.
SS-PRC005-EN6
Selection Pr ocedure
RAUC/AIR HANDLER
Selection Procedure
Net capacity curves for the RAUC
condensing units are given on pages 14
through 23. These graphs can be used to
cross plot an evaporator (EVP)
performance curve. The resultant point
of intersection will be the system design
balance point. The design operating
suction temperature and capacity can
then be read directly from the graph.
(Note: It is usually necessary to account
for suction and liquid line losses in the
performance accordingly. The actual
losses are determined by the
interconnecting piping.)
To plot the evaporator performance
curve it is only necessary to obtain gross
evaporator capacities for the given
entering air conditions and cfm at two
different saturated suction temperatures.
The Trane Refrigeration Coil Computer
Selection Program can be used to
conveniently provide the necessary
evaporator capacity values at the
selected suction temperatures.
RAUC/EVP Selection
Procedure
Preselected RAUC/EVP capacities are
provided on pages 12 and 13. To select
for other RAUC/EVP combinations or
conditions, four quantities must be
known. They are:
a.
Entering (EWT) or leaving (L WT) water
temperature.
b.
Net cooling load (T).
c.
Water temperature drop (dt).
d.
Waterflow rate in g allons per minute
(gpm). Knowing any two of the last three
variables (T, dt, and gpm) will determine
the third since
T = (Gpm x dt)/24.
Standard Selection Procedur e
1.
Determine: EWT, T, dt, gpm.
2.
Select an evaporator (EBP) and split
condensing unit (RAUC) to mix -matc h.
3.
Enter Charts PD-18, PD-20, and PD-21 to
find ITD/dt.
4.
From Step 3 calculate the saturated
suction temperature (SST) of the chiller
at the given load using the formula
SST = EWT - [(ITD/dt) x dt].
5.
Enter the appropriate RAUC capacity
char t on pages 1 4-23 with the result on
SST and given load, T. If this point is
below or on the proper condensing unit
performance curve at the same suction
temperature, the RAUC/EVP
combination will meet the desired load.
If above, try a larger chiller and/or
condensing unit. Repeat Steps 2 through
5 until the most economical mix-matc h
has been achieved.
Example
Given:
Ambient Air = 95°F
Supply Water T emperature = 45°F
Waterflow = 230 Gpm
Water Temperature Drop = 10°F
Step 1:
EWT = L WT + dt = 45°F + 1 0°F =
55°F
Gpm = 230 gpm (given)
dt = 10°F (given)
Step 2:
Choose a nominal RAUC and EVP:
RAUC-D1 0 and 1 00-ton EVP
Step 3:
Gpm/nominal tonnage = 230/100 = 2.30
ITD/dt is read from Chart PD-21 as 1.70,
assuming .0005 fouling factor.
Step 4:
SST =
EWT - [(ITD/dt) x dt] =
[55 - (1 .70 x 10)] = 38.0°F = SST
Enter Chart PD-14 at 38.0°F SST and 95
ambient air. The condensing unit will
produce 1182 MBh at 38.0°F SST,
therefore the 100-ton EVP/RAUC-D1 0 is
the proper selection.
Alternative Selection Pr ocedur e
Given: The same information as in the
standard selection procedure plus a
predetermined condensing unit.
Enter the specified RAUC condensing
unit performance curve with the
appropriate cooling load T, to determine
the minimum required suction
temperature.
Enter Chart PD-14 with ITD/dt (EWTsaturated suction temperature/dt) to
determine a gpm/nominal tonnage.
Since the gpm is known, the smallest
nominal size EVP can therefore be
calculated.
Example:
Given:
Ambient Air = 95°F
Condensing Unit - RAUC-C80
Supply Water T emperature - 45°F
dt = 10°F
T = 80.0 Tons
Step 1:
EWT = L WT + dt = 45°F + 1 0°F =
55°F
dt = 10°F
T = 80.0 Tons (960 MBh)
Gpm = 152
Step 2:
Enter Chart PD-13 at 95°F and 80.0 tons
to read the saturated suction
temperature (SST) as 39.7.
Step 3:
Enter Chart PD-21 at an ITD/dt = (EWT SST)/dt = (55 - 39.7)/1 0 = 1.53
Then read the maximum gpm/nominal
tons as 1 .87 (assume .0005 fouling
factor). Therefore since 1.87 = Gpm/
Nominal T on = 152/1.87 = 81.4 T ons. An
80-ton EVP is the optimum selection.
7SS-PRC005-EN
Model
Number
20 - 60 Ton
Description
Air-Cooled Condensing Units
20 TO 60-T ON AIR-COOLED CONDENSING UNITS
R A U C C20 E B A 1 0 A 0 0 0 0 0 0 0 0
1 2 3 4 5,6,7 8 9 10 1 1 12 13 14 15 16 17 18 1 9 20 21
DIGIT 1 — UNIT TYPE
R = Condensing Unit
DIGIT 2 — CONDENSER
A = Air Cooled
DIGIT 3 — AIRFLOW
U = Upflow
DIGIT 4 — DEVELOPMENT SEQUENCE
C = Third
DIGITS 5,6,7 — NOMINAL CAP ACIT Y
C20 = 20 Tons
C25 = 25 Tons
C30 = 30 Tons
C40 = 40 Tons
C50 = 50 Tons
C60 = 60 Tons
Remote Chillers
20 TO 60-TON REMOTE CHILLERS
EVP B C20 A 1 *
1,2,3 4 5,6,7 8 9 1 0
DIGIT 1,2,3 — UNIT TYPE
EVP = Evaporative Liquid Chiller
DIGIT 4 — DEVELOPMENT SEQUENCE
(Factory Assigned)
A = First
B = Second
Etc.
Definition of Abbr eviations Used in This Catalog
AL — Aluminum
ASTM — American Society of Testing and Materials
CFM — Cubic Feet Per Minute
Conn. — Connection
CSA — Canadian Standards Association
CU — Copper
DIA. — Diameter
dt — T emperature Dif ference
EER — Energy Efficiency Ratio (Btu/W at t-Hour)
1. The service digit for each model number contains 21 digits; all 21 digits must be referenced.
1
DIGIT 8 — VOL TAGE AND START
CHARACTERISTICS
E = 200/60/3 XL
D = 415/50/3 XL
F = 230/60/3 XL
4 = 460/60/3 XL
5 = 575/60/3 XL
9 = 380/50/3 XL
DIGIT 9 — SY STEM CONTROL
B = No System Control
C = Constant Volume Control
E = Supply Air V A V Control
P = EVP Control
DIGIT 10 — DESIGN SEQUENCE
(Factory Assigned)
A = First
B = Second
Etc.
DIGITS 5,6,7 — NOMINAL CAP ACIT Y
C20 = 20 Tons
C25 = 25 Tons
C30 = 30 Tons
C40 = 40 Tons
C50 = 50 Tons
C60 = 60 Tons
EWT — Entering Water (Solution) T emperature
(F) — Units of Temperature in Degrees F ahrenheit
GPM — Gallons Per Minute
ID — Inside Diameter
(INT) — Internal
IPLV — Integrated Part Load Value
ITD — Initial Temperature Dif ference
k — Thermal Conductivity
KO — Knock Out
DIGIT 1 1 — AMBIENT CONTROL
0 = Standard
1 = 0°F (Low Ambient Dampers)
DIGIT 12 — AGENC Y APPROVAL
0 = None
3 = UL/CSA (not available for 50 Hz)
DIGIT 13-21 — MISCELLANEOUS
A = Unit Disconnect Switch
B = Hot Gas Bypass
D = Suction Service V alve
F = Pressure Gauges
G = Return Air S ensor
H = Copper Fins
T = Flow Switch (EVP Control Option
Only)
1 = Spring Isolators
2 = Rubber Isolators
4 = 5-Y ear Compressor Warranty
9 = Pac ked Stoc k Designator
DIGIT 8 — NUMBER OF CIRCUITS
A = Single (20-30 Ton Units)
D = Dual (40-60 Ton Units)
DIGIT 9 — TUBE MATERIAL
1 = Copper
DIGIT 10 — DESIGN SEQUENCE
(Factory Assigned)
A = First
B = Second
Etc.
SS-PRC005-EN8
Model
Number
80 - 120 Ton
Description
Air-Cooled Condensing Units
80 TO 120-TON AIR-COOLED CONDENSING UNIT
R A U C C80 4 B A 0 0 2 B 0 0 0 0 0
1 2 3 4 5,6,7 8 9 10 11 12 13 14 15 16 17 18 19
DIGIT 1 — UNIT TYPE
R = Remote Condensing Unit
DIGIT 2 — CONDENSER
A = Air-Cooled
DIGIT 3 — AIRFL OW
U = Upflow
DIGIT 4 — DEVELOPMENT SEQUENCE
C = Third
DIGITS 5,6,7 — NOMINAL CAP ACIT Y
C80 = 80 Tons
D10 = 1 00 T ons
D12 = 120 T ons
1
DIGIT 8 — VOLTAGE AND S TART
CHARACTERISTICS
E = 200/60/3 XL
D = 415/50/3 XL
F = 230/60/3 XL
4 = 460/60/3 XL
5 = 575/60/3 XL
9 = 380/50/3 XL
DIGIT 9 — SY STEM CONTR OL
B = No System Control
E = Supply Air V A V Control
P = EVP Control
DIGIT 10 — DESIGN SEQUENCE
(Factory Assigned)
A = First
B = Second
Etc.
DIGIT 1 1 — AMBIENT CONTROL
0 = Standard
1 = 0°F (Low Ambient Dampers)
DIGIT 12 — AGENC Y APPROVAL
0 = None
3 = UL/CSA (not available for 50 Hz)
DIGIT 13 — NUMBER OF CIRCUITS
2 = Dual (All 80-120 T on)
DIGIT 14-19 — MISCELLANEOUS
B = Hot Gas Bypass Valve
D = Suction Service V alve
F = Pressure Gauges
H = Copper Fins
1 = Spring Isolators
3 = Flow Switch (EVP Control Option
Only)
Remote Chillers
80 TO 120-TON REMOTE CHILLERS
EVP B C80 D 1 A
1,2,3 4 5,6,7 8 9 10
DIGIT 1,2,3 — UNIT TYPE
EVP = Evaporator Liquid Chiller
DIGIT 4 — DEVELOPMENT SEQUENCE
(Factory Assigned)
A = First
B = Second
Etc.
Definition of Abbreviations Used in This Catalog
KW – Kilowatt (Unit of Power)
lbs. – Pounds (Unit of W eight)
Loc. – Location
LRA –Loc ked Rotor Amps
L WT – Leaving Water (Solution) Temperature
(MBH) – 1 x 10
MTG. – Mounting
NPS – Nominal Pipe Size
1. The service digit for each model number contains 19 digits; all 19 digits must be referenced.
3
Btuh
DIGITS 5,6,7 — NOMINAL CAP A CITY
C80 = 80 Tons
D10 = 1 00Tons
D12 = 120 T ons
DIGIT 8 — NUMBER OF CIRCUITS
D = Dual (80-120 T on Units)
DIGIT 9 — TUBE MATERIAL
1 = Copper
DIGIT 10 — DESIGN SEQUENCE
(Factory Assigned)
A = First
B = Second
Etc.
OD – Outside Diameter
PD – Pressure Drop (Units are Feet of Water)
RLA – Rated Load Amps
SST – Saturated Suction Temperature
UL – Underwriters Laboratories Inc.
VA V – Variable Air Volume
W/ – With
W/O – Without
XL – Across-the-Line-Star t
9SS-PRC005-EN
General Data
Table GD-1 — General Data — 20-120 Ton Condensing Units
Nominal Tonnage 20 25 30 40 50 60 80 100 120
Model Number RAUC-C20 RAUC-C25 RAUC-C30 RAUC-C40 RAUC-C50 RAUC-C60 RAUC-C80 RAUC-D10 RAUC-D12
Compressor Data
Type Scroll Scroll Scroll Scroll Scroll Scroll Scroll Scroll Scroll
Manifolded Sets
Circuit #1 10T + 10T 10T + 15T 15T + 15T 10T + 10T 10T + 15T 15T + 15T 10T + 15T + 15T 10T + 10T 15T + 15T
Circuit # 2 N/A N/A N/A 10T + 10T 10T + 15T 15T + 15T 10T + 15T + 15T 10T + 10T 15T +15T
Unit Capacity Steps (%) 100-50 100-40 100-50 100-75-50-25 100-80-60-30 100-75-50-25
No Control & *19-38-50- *20-40-55 *25-50-63
VAV Option 63-81-100 70-85-100 75-88-100
EVP Option *19-38-50 *20-40-55 *25-50-63
Condenser Fan Data
Quantity/Fan Dia./Type 2/26”/Prop. 3/26”/Prop. 3/26”/Prop. 4/26”/Prop. 6/26”/Prop. 6/26”/Prop. 8/26”/Prop. 12/26”/Prop. 12/26”/Prop.
Fan Drive Type Direct Direct Direct Direct Direct Direct Direct Direct Direct
No. of Motors/Hp Each 2/1.0 3/1.0 3/1.0 4/1.0 6/1.0 6/1.0 8/1.0 12/1.0 12/1.0
Nominal Total Cfm 1400 0 18300 20900 28200 35600 4080 0 49600 6680 0 76000
Condenser Coil Data
Number of Coils/Size 1/71x71 1/71x71 1/45x71 2/65x70 2/51x96 2/66x96 4/65x70 4/51x96 4/66x96
(Inches) 1/49x71
Face Area (Sq. Ft.) 35.0 35.0 46.1 63.2 67.1 88.0 126.4 134.2 176.0
Rows/Fins Per Ft. 3/144 3/144 3/144 3/144 3/144 3/144 3/144 3/144 3/144
Condenser Storage 76 76 96 136 142 184 272 284 368
Capacity (Lbs.) (2)
Refrigerant Data (3)
No. Refrigerant Circuits1 11222 222
Refrigerant Type R-22 R-22 R-22 R-22 R-22 R-22 R-22 R-22 R-22
Refrigerant Operating 28 31 40 58 62 80 116 124 160
Charge (Lbs) (1) (4) See note 4 See note 4 See note 4 See note 4 See note 4 See note 4 See note 4 See note 4 See note 4
Minimum Outdoor Air Temperature for Mechanical Cooling
Standard Ambient 40-115 40-115 40-115 40-115 40-115 40-115 40-115 40-115 40-115
Operating Range (F)
Low Ambient Option (F)0 00000 000
Notes:
1. Operating charge is approxmate for condensing unit only, and does not include charge for low side or interconnecting lines.
2. Condenser storage capacity is given at conditions of 95°F outdoor temperature, and 95% full.
3. Refer to Refrigerant Piping under Application Considerations on Page 6.
4. Condensing units are shipped with a nitrogen holding charge only.
Table GD-3 — EER Data — Condensing Unit Only (1)
Nominal Model Capacity Compressor KW Control Condensing Unit
Tonnage Number (MBH) KW Each/Total KW Total KW EER IPLV
20 RAUC-C20 239 19.8 0.9/1.8 0.25 21.9 10.9 15.5
25 RAUC-C25 314 25.3 0.9/2.7 0.25 28.3 11.1 15.2
30 RAUC-C30 376 30.4 0.9/2.7 0.25 33.3 11.3 16.2
40 RAUC-C40 507 40.3 0.9/3.6 0.40 44.3 11.5 16.4
50 RAUC-C50 626 51.2 0.9/5.4 0.40 57.0 11.0 15.7
60 RAUC-C60 748 61.2 0.9/5.4 0.40 67.0 11.2 16.2
80 RAUC-C80 1045 87.9 0.9/7.2 0.50 95.6 10.9 16.1
100 RAUC-D10 1300 110.9 0.9/10.8 0.50 122.1 10.7 15.3
120 RAUC-D12 1560 131.5 0.9/10.8 0.50 142.6 10.9 16.2
Notes:
1. Condensing unit only ratings are in accordance with ARI standard 365. Full load ratings are at 95°F entering air temperature, and refrigerant conditions entering the
condensing unit of 45°F saturated and 60°F actual temperature. Part load ratings are at 80°F entering air temperature and refrigerant conditions entering the condensing
unit of 50°F saturated suction and 65°F actual temperature.
Net Total Unit Condenser Fan
Table GD-2 — Evaporator Chillers — 20-120 Tons
Nominal Tonnage 20 25 30 40 50 60 80 100 120
No. Of Circuits 111222222
Volume Shell (Gal) (1) 11.7 10.7 16.3 13.8 21.0 18.5 43.1 35.0 47.9
Tube Pull (In.) (2) 73 73 74 74 96 96 95 95 95
Refrigerant Operating Charge 8 10 12 16 20 24 26.8 33.4 40.4
Notes:
1. Shell volume is for waterside only.
2. Tube pull given is length of the evaporator.
3. Operating charge is approximate and for the evaporator chiller only.
63-81-100 70-85-100 75-88-100
+15T +15T +15T +15T
+15T +15T +15T +15T
SS-PRC005-EN10
P erformance Adjustment Factors
Table P AF -1 — Altitude Corr ection Multiplier f or Capacity
Altitude (Ft.) 2,000 4,000 6,000 8,000 10,000
Condensing Unit Only 0.982 0.960 0.933 0.902 0.866
Condensing Unit / Air Handling Unit Combination 0.983 0.963 0.939 0.911 0.881
Condensing Unit With Evap. 0.986 0.968 0.947 0.921 0.891
Table P AF -2 — Glycol Adjustment Factor for 20-60 Ton Split Condensing Units with the Remote Chiller (EVP) Option
Leaving 0% 10% 20% 30% 40% 50%
Solution Freezing Point = 32°F Freezing Point = 24°F Freezing Point = 1 5°F Freezing Point = 5°F Freezing P oint = -12°F Freezing Point = -33°F
T emp. CAP GPM KW CAP GPM KW CAP GPM KW CAP GPM KW CAP GPM KW CAP GPM KW
10°F — — — — — — .833 .875 .952 .822 .912 .952 .811 .954 .945 .800 1.005 .945
15°F — — — — — — .850 .904 .959 .850 .937 .959 .840 .983 .959 .830 1.029 .953
20°F — — — — — — .882 .928 .971 .873 .962 .965 .864 1.008 .965 .855 1.057 .960
25°F — — — .909 .924 .977 .901 .952 .977 .901 .990 .972 .893 1.031 .972 .876 1.083 .972
30°F — — — .925 .947 .983 .925 .972 .983 .917 1.009 .978 .910 1.053 .978 .895 1.1 01 .978
35°F — — — .945 .963 .989 .938 .989 .989 .931 1.023 .984 .924 1.066 .984 .917 1.115 .978
40°F 1.000 1.000 1.000 .956 .974 .984 .949 1.000 .984 .943 1.034 .984 .937 1.077 .984 .930 1 .124 .979
45°F 1.000 1.000 1.000 .965 .981 .990 .959 1.005 .990 .953 1.039 .985 .947 1.080 .985 .936 1 .1 29 .979
50°F 1.000 1.000 1.000 .962 .982 .990 .957 1.007 .990 .951 1.038 .990 .946 1.079 .985 .935 1 .1 24 .985
Table P AF -3 — Glycol Adjustment Factor for 80-120 Ton Split Condensing Units with the Remote Chiller (EVP) Option
Leaving 0% 10% 20% 30% 40% 50%
Solution Freezing Point = 32°F Freezing Point = 24°F Freezing Point = 15°F Freezing Point = 5°F Freezing P oint = -12°F Freezing Point = -33°F
T emp. CAP GPM KW CAP GPM KW CAP GPM KW CAP GPM KW CAP GPM KW CAP GPM KW
10°F — — — — — — .931 .980 .959 .924 1 .023 .954 .916 1.075 .949 .907 1.131 .944
15°F — — — — — — .943 .991 .967 .936 1 .035 .962 .928 1.085 .957 .919 1.140 .952
20°F — — — .998 1.010 1.000 .955 1.003 .973 .948 1.044 .973 .941 1.094 .969 .933 1 .1 49 .964
25°F — — — .998 1.01 4 1.000 .967 1 .016 .979 .961 1.056 .979 .954 1.106 .975 .946 1.160 .970
30°F — — — .998 1.015 .996 .978 1.030 .984 .973 1.068 .984 .966 1.117 .980 .958 1 .173 .976
35°F — — — .998 1.016 1.000 .987 1.039 .992 .982 1.078 .992 .975 1.124 .989 .968 1 .1 78 .981
40°F 1.000 1.000 1.000 .998 1 .0 1 6 1.000 .994 1.042 .996 .988 1.081 .993 .982 1.127 .989 .974 1.178 .986
45°F 1.000 1.000 1.000 .997 1 .0 1 6 .997 .996 1.045 .997 .991 1.083 .993 .985 1.126 .990 .977 1 .1 78 .986
50°F 1.000 1.000 1.000 .997 1 .0 1 6 1.000 .997 1.046 1.000 .992 1.082 .997 .985 1.124 .990 .978 1.175 .987
Percent of Ethylene Glycol by Weight
Percent of Ethylene Glycol by Weight
11SS-PRC005-EN
P erformance Data
20 - 60 Tons
Table PD-1 — Gross Syst em Capacity D ata — 20-60 T on Condensing Unit with Ev aporator Chiller
Condensing Leaving Outside Ambient Temperature Entering Condenser (F)
Unit-Nominal Chilled 85 95 105 115
Tons Model Water T emp. Tons Kw T ons Kw Tons Kw Tons Kw
RAUC C20 40 16.3 17.1 15.5 18.8 14.6 20.9 13.7 23.2
With 42 16.8 17.2 16.0 19.0 15.1 21.1 14.2 23.4
20 T on 45 17 .6 17 .4 16.8 19.2 15.9 21.3 14.9 23.7
20 50 19.0 17.8 18.1 19.6 17.2 21.7 16.2 24.1
25 50 24.6 22.8 23.4 25.2 22.2 27.9 20.9 31 .0
30 30 T on 45 27 .5 26.7 26.2 29.6 24.8 32.9 23.4 36.5
40 50 40.1 35.4 38.2 39.2 36.2 43.4 34.2 48.4
50 50 49.1 46.0 46.7 50.8 44.3 56.4 41.7 62.6
60 50 58.5 54.8 55.7 60.8 52.8 67.4 49.8 75.0
Chiller 48 18.5 17.6 17.6 19.5 16.7 21.6 15.7 24.0
RAUC C20 40 16.8 17.2 16.0 19.0 15.1 21.0 14.1 23.4
With 42 17.4 17.4 16.5 19.2 15.6 21.2 14.6 23.6
25 T on 45 18.2 17 .6 17 .3 19.4 16.4 21 .5 15.4 23.8
Chiller 48 19.1 17.8 18.2 19.6 17 .2 21.8 16.2 24.1
RAUC C25 40 21.0 21.8 20.0 24.1 18.9 26.8 17.8 29.8
With 42 21.7 22.0 20.7 24.4 19.5 27.0 18.4 30.1
25 T on 45 22.8 22.3 21.7 24.7 20.5 27 .4 1 9.3 30.4
Chiller 48 23.9 22.6 22.7 25.0 21.5 27.7 20.3 30.8
RAUC C25 40 21.9 22.1 20.8 24.4 19.7 27.1 18.4 30.1
With 42 22.7 22.3 21.5 24.6 20.3 27.3 19.1 30.3
30 T on 45 23.8 22.6 22.6 24.9 21 .4 27 .6 20.1 30.7
Chiller 48 24.9 22.9 23.7 25.3 22.4 28.0 21.1 31.1
RAUC C30 40 25.4 26.1 24.2 28.9 22.9 32.2 21.5 35.8
With 42 26.3 26.3 25.0 29.2 23.6 32.5 22.3 36.1
Chiller 48 28.9 27.1 27.5 30.0 26.0 33.3 24.5 37.0
RAUC C40 40 34.3 34.2 32.6 37.6 30.8 41.8 28.9 46.4
With 42 35.4 34.4 33.7 38.0 31.8 42.2 29.9 46.8
40 T on 45 37 .1 34.8 35.3 38.4 33.5 42.6 31 .5 47 .4
Chiller 48 38.9 35.2 37.0 39.0 35.1 43.2 33.1 48.0
RAUC C40 40 35.4 34.4 33.6 38.0 31.8 42.0 29.8 46.8
With 42 36.6 34.6 34.8 38.2 32.8 42.4 30.9 47.2
50 T on 45 38.4 35.0 36.5 38.8 33.5 43.0 32.5 47 .8
Chiller 48 40.7 35.6 38.3 39.2 36.2 43.4 34.1 48.4
RAUC C50 40 42.1 44.0 40.0 48.8 37.8 54.0 35.5 60.2
With 42 43.4 44.4 41.3 49.2 39.0 54.6 36.7 60.6
50 T on 45 45.5 45.0 43.3 49.8 40.9 55.2 38.5 61 .4
Chiller 48 47.6 45.6 45.3 50.4 42.9 55.8 40.4 62.0
RAUC C50 40 43.3 44.4 41.1 49.0 38.8 54.4 36.4 60.6
With 42 44.7 44.8 42.4 49.6 40.1 54.8 37.6 61.0
60 T on 45 46.9 45.4 44.5 50.2 42.1 55.6 39.6 61 .8
Chiller 48 49.1 46.0 46.7 50.8 44.2 56.4 41.5 62.4
RAUC C60 40 50.0 52.2 47.6 58.0 45.0 64.6 42.4 71.8
With 42 51.7 52.8 49.2 58.6 46.5 65.2 43.8 72.4
60 T on 45 54.2 53.4 51.6 59.4 48.8 66.0 46.0 73.4
Chiller 48 56.7 54.2 54.0 60.2 51.2 67.0 48.3 74.4
RAUC C60 40 55.1 53.8 52.2 59.6 49.2 66.2 46.1 73.4
With 42 56.9 54.2 54.0 60.2 50.9 66.8 47.8 74.2
80 T on 45 59.8 55.2 56.7 61 .0 53.5 67 .8 50.3 75.2
Chiller 48 62.7 56.0 59.5 62.0 56.2 68.8 52.8 76.2
50 1 9.7 17.9 18.8 19.8 17.8 21 .9 16.7 24.3
50 25.7 23.1 24.4 25.5 23.1 28.2 21.8 31.3
50 29.8 27.3 28.3 30.3 26.9 33.6 25.3 37.3
50 41 .5 35.8 39.5 39.6 37.4 43.8 35.2 48.6
50 50.6 46.4 48.1 51.2 45.6 56.8 42.9 63.0
50 64.7 56.6 61.4 62.6 58.0 69.4 54.6 77.0
SS-PRC005-EN12
P erformance
Data
80 - 120 Tons
Table PD-2 — Gross System Capacity D ata — 80-120 T on Condensing Unit with Ev aporator Chiller
Condensing Leaving Outside Ambient Temperature Entering Condenser (F)
Unit-Nominal Chilled 85 95 105 115
T ons Model Water T emp. T ons Kw Tons Kw Tons Kw T ons Kw
RAUC C80 40 65.1 73.9 61.8 81.9 58.3 90.9 54.6 100.9
With 42 67.5 74.7 64.1 82.7 60.5 91.8 56.7 101.8
60 T on 45 71.3 75.8 67 .7 84.0 63.9 93.1 59.8 103.2
Chiller 48 75.1 77.0 71.3 85.2 67.3 94.4 63.1 104.6
RAUC C80 40 70.5 75.6 66.8 83.7 62.9 92.7 58.8 102.8
80 80 T on 45 77 .1 77 .6 73.1 85.8 68.8 95.0 64.4 105.2
100 100 T on 45 96.9 99.7 91.8 1 10.0 86.5 121.6 80.9 134.3
120 50 122.2 120.7 115.9 133.5 109.2 147.8 102.1 163.4
With 42 73.1 76.4 69.3 84.5 65.3 93.6 61.0 103.7
Chiller 48 81.2 78.9 77.0 87.2 72.5 96.4 67.9 106.6
RAUC C80 40 71.4 75.9 67.7 84.0 63.7 93.1 59.5 103.1
With 42 74.1 76.7 70.2 84.9 66.1 94.0 61.8 104.0
100 T on 45 78.2 77 .9 74.1 86.2 69.7 95.4 65.2 105.5
Chiller 48 82.4 79.2 78.0 87.5 73.5 96.8 68.7 107.0
RAUC D10 40 87.1 96.4 82.6 106.6 77.8 118.0 72.7 130.6
With 42 90.3 97.5 85.6 107.7 80.6 11 9.1 75.4 131.8
80 T on 45 95.2 99.1 90.3 109.4 85.0 121.0 79.6 133.7
Chiller 48 100.2 100.8 95.0 111.2 89.6 122.8 83.8 135.6
RAUC D10 40 88.6 96.9 83.9 107.1 79.0 119.7 73.9 131.1
With 42 91.9 98.0 87.1 108.2 73.9 118.5 76.6 132.4
Chiller 48 102.1 101.4 96.7 111.8 91.1 123.5 85.2 136.3
RAUC D10 40 89.4 97.2 84.7 107.4 79.7 118.8 74.5 131.4
With 42 92.7 98.3 87.9 108.5 82.7 120.0 77.3 132.7
120 T on 45 97 .9 100.0 92.7 11 0.4 87 .3 121.9 81 .6 134.6
Chiller 48 103.1 101.8 97.7 112.2 92.0 123.8 86.0 136.6
RAUC D12 40 102.8 114.5 97.4 126.9 91.7 140.8 85.7 156.1
With 42 106.5 115.7 101.0 128.2 95.1 142.1 88.9 157.5
100 T on 45 112.3 11 7 .6 106.4 130.2 100.3 144.2 93.8 159.7
Chiller 48 118.2 119.4 112.0 132.2 105.6 146.3 98.8 161.9
RAUC D12 40 104.1 114.9 98.6 127.3 92.9 141.2 86.8 156.6
With 42 108.0 116.2 102.3 128.7 96.3 142.6 90.0 158.0
120 T on 45 113.9 118.1 107 .9 130.7 101 .6 144.7 95.0 160.3
Chiller 48 120.0 120.0 113.7 132.7 107.1 146.9 100.1 162.5
50 77.7 77.8 73.8 86.1 69.6 95.3 65.3 105.6
50 84.0 79.7 79.6 88.1 75.0 97.4 70.2 107.6
50 85.2 80.1 80.7 88.5 76.0 97.8 71.1 108.0
50 103.7 10 1.9 98.3 1 12.4 92.6 124.1 86.7 136.9
50 105.6 102.6 100.0 11 3.1 94.3 124.7 88.2 137.6
50 106.7 102.9 101 .1 113.5 95.2 125.1 89.1 138.0
50 124.1 121.3 1 1 7.6 134.1 11 0.8 148.4 103.6 164.1
Table PD-3 – Evaporator Chiller Water Pressur e Drop
20 Ton 25 Ton 30 Ton 40 Ton 50 Ton
GPM PD GPM PD GPM PD GPM PD GPM PD
25.0 3.8 30.0 3.7 35.0 2.1 50.0 4.1 60.0 4.0
30.0 5.4 35.0 5.0 40.0 2.7 60.0 5.8 70.0 5.4
35.0 7 .2 40.0 6.4 45.0 3.4 70.0 7.7 80.0 6.9
40.0 9.2 45.0 7.9 50.0 4.1 80.0 9.9 90.0 8.6
45.0 11.5 50.0 9.6 60.0 5.8 90.0 12.3 100.0 10.4
50.0 14.0 60.0 13.5 70.0 7.7 100.0 15.0 120.0 14.7
60.0 19.6 70.0 18.1 80.0 9.9 120.0 21.1 140.0 19.6
70.0 26.1 80.0 23.2 90.0 12.3 140.0 28.1 160.0 25.1
––––100.015.0––––
60 T on 80 T on 100 T on 120 Ton
GPM PD GPM PD GPM PD GPM PD
80.0 5.6 100.0 4.5 120.0 3.2 140.0 3.2
90.0 7.0 120.0 6.5 140.0 4.3 160.0 4.1
100.0 8.5 140.0 8.7 160.0 5.6 180.0 5.2
120.0 12.0 160.0 11.2 180.0 7.0 200.0 6.3
140.0 15.9 180.0 14.1 200.0 8.5 240.0 9.0
160.0 20.5 200.0 17.2 240.0 12.2 280.0 12.0
180.0 25.5 240.0 24.8 280.0 16.3 320.0 15.8
200.0 31.0 – – 320.0 21.0 360.0 19. 7
– – – – 360.0 26.0 400.0 24.0
Notes:
— All capacites are at 10°F Delta water temp. Kw is
total of all compressors, but does not include
condenser fan, water pump and control power.
— 25’ line loss is included.
GPM = Gallons Per Minute
PD = Pressure Drop (Feet of Water)
13SS-PRC005-EN
P erformance
20 & 25 Ton
Data — 60 Hz
Chart PD-1 — 20 Ton Condensing Unit Performance — RAUC-C20 (60 HZ)
Condensing Units
Chart PD-2 — 25 Ton Condensing Unit Performance — RAUC-C25 (60 HZ)
SS-PRC005-EN14
P erformance
RA UC-C20 & C25
Data — 50 Hz
Chart PD-3 — 20 Ton Condensing Unit P erfor mance — RA UC-C20 (50 HZ)
Condensing Units
Chart PD-4 — 25 Ton Condensing Unit P erfor mance — RA UC-C25 (50 HZ)
15SS-PRC005-EN
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