Trane Rtaaiom3 Manual

							11RTAA-IOM-3
Figure 1
Typical RTAA Packaged Unit
130 - 200 Ton
(Front/Side Exterior View)
Condenser
Coils
Connection Access
for Control Voltage
and InterlocksStarter and Power Panel
Nameplate
Control PanelLine
Voltage
Connection
Access 
						

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Figure 2
Typical RTAA Packaged Unit
130 - 200 Ton
(Rear/Side Exterior View)
Chilled Water OutletChilled Water Inlet 
						

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Figure 3
Typical RTAA Packaged Unit
240-400 Tons
Control
PanelEvaporator
Outlet
Inlet 
						

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Figure 4
Typical RTAA Unit
(Rear Exterior View)
Condenser Fans/Motors
Condenser
Liquid Line Filter Electronic Expansion Valves
Liquid Line Filter Condenser 
						

							15RTAA-IOM-3
Figure 5
Typical RTAA Unit
(with Remote Evaporator Option)
(Rear Exterior View)
Condenser
Fans/Motors
Circuit #1Condenser
Fans/Motors
Circuit #2
Condenser
Circuit #1Condenser
Circuit #2
Circuit #1
Field Refrigerant
Piping ConnectionsCircuit #2
Field Refrigerant
Piping Connections 
						

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Table 1
General RTAA Mechanical Specifications
Size130 140 155 170 185 200Compressor
Quantity 2 2 2 2 2 2
Nominal Size(1)(Tons) 70/70 70/70 85/70 100/70 100/85 100/100
Evaporator
Water Storage (Gallons) 49 46 73 69 62 61
(Liters) 184 175 277 261 234 231
Min. Flow (GPM) 156 156 186 186 222 222
(L/Sec) 9.8 9.8 11.7 11.7 14.0 14.0
Max. Flow (GPM) 504 504 612 612 720 720
(L/Sec) 31.8 31.8 38.6 38.6 45.4 45.4
Condenser
Oty of Coils 4 4 4 4 4 4
Coil Length (In) 214/214 214/214 240/214 240/214 240/240 240/240
Coil Height (In) 42 42 42 42 42 42
Number of Rows 3 3 3 3 3 3
Condenser Fans
Quantity 5/5 5/5 6/5 7/5 7/6 7/7
Diameter (In) 30 30 30 30 30 30
Total Airflow  (CFM) 105,860 105,860 114,610 120,160 128,910 134,460
Nominal RPM 1140 1140 1140 1140 1140 1140
Tip Speed (Ft/Min) 8954 8954 8954 8954 8954 8954
Motor HP (Ea) 1.5 1.5 1.5 1.5 1.5 1.5
Min Starting/Oper. Ambient (2)
Std Unit (Deg. F) 15 15 15 15 15 15
Low Amb. (Deg. F) 0 0 0 0 0 0
General Unit
Refrigerant HCFC-22 HCFC-22 HCFC-22 HCFC-22 HCFC-22 HCFC-22
No. of Independent
Refrigerant Circuits 2 2 2 2 2 2
% Min. Load (3) 10 10 10 10 10 10
Refrig. Charge(1)(Lb) 130/130 130/130 165/130 170/130 170/165 170/170
(Kg) 59/59 59/59 75/59 77/59 77/75 77/77
Oil Charge (Gal) 7/7 7/7 8/7 8/7 8/8 8/8
(1,4,5) (L)27127 27/27 31/27 31/27 31/31 31/31 
						

							17RTAA-IOM-3
Table 1 (Continued from previous page)
General RTAA Mechanical Specifications
Size240 270 300 340 370 400Compressor
Quantity (1) 2/1 1-1/1 2/1 2/2 1-1/2 2/2
Nominal Size (1)(Tons) 70/100 100-70/100 100/100 70/100 100-70/100 100/100
Evaporator
Water Storage (Gallons) 151 143 135 124 116 108
(Liters) 572 523 511 470 439 407
Min. Flow (GPM) 288 288 288 408 408 408
(L/Sec) 18.2 18.2 18.2 25.7 25.7 25.7
Max. Flow (GPM) 1080 1080 1080 1440 1440 1440
(L/Sec) 68.1 68.1 68.1 90.8 90.8 90.8
Condenser
Qty. of Coils 4/4 2-2/4 4/4 4/4 2-2/4 4/4
Coil Length (In) 214/120 240-214/120 240/120 214/240240-214/240 240/240
Coil Height (In) 42 42 42 42 42 42
Number of Rows 3 3 3 3 3 3
Condenser Fans
Quantity (1) 10/7 12/7 14/7 10/14 12/14 14/14
Diameter (In) 30 30 30 30 1 30 30
Total Airflow (CFM) 173,090 187,390 201,690 240,320 254,620 268,920
Nominal RPM 1140 1140 1140 1140 1140 1140
Tip Speed (Ft/Min) 8954 8954 8954 8954 8954 8954
Motor HP (Ea) 1.5 1.5 1.5 1.5 1.5 1.5
Min Starting/Oper. Ambient (2) 0 0 0 0 0 0
(Deg. F)
General Unit
Refrigerant HCFC-22 HCFC-22 HCFC-22 HCFC-22 HCFC-22 HCFC-22
No. of Independent
Refrigerant Circuits 2 2 2 2 2 2
% Min. Load (3) 10 10 10 10 10 10
Refrig  Charge(1)(Lb) 276/180 318/180 360/180 276/360 318/360 360/360
(Kg) 125/82 144/82 163/82 125/163 144/163 163/163
Oil Charge) (Gal) 15/8 16/8 17/8 15/17 16/17 17117
(1.4,5) (L) 57/31 61/31 65/31 57/65 61/65 65/65
Notes:
(1) Data containing information on two circuits shown as follows: ckt1/ckt2
(2) Minimum start-up/operating ambient based on a 5 mph wind across the condenser.
(3) Percent minimum load is for total machine, not each individual circuit.
(4) Trane Part# OIL-15
(5) Add 6 gal./circuit for domestic water heater. 
						

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Figure 6
Remote Evaporator
Refrigerant
Suction Line
Circuit #1Refrigerant
Suction Line
Circuit #2
Entering Chilled
Water Temp. SensorsLeaving Chilled Water
Temperature Sensor
Evaporator
Refrigerant
Temperature
Sensors
Electronic
Expansion
Valve Sight
Glass Filter/Dryer Terminal Box Refrigerant
Liquid Line
Circuit #1 
						

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RTAA Model Circuit/Tons Compressor/Tons130 1 70 A 70
270 B70
140 1 70 A 70
270 B70
155 1 85 A 85
270 B70
170 1 100 A 100
270 B70
185 1 100 A 100
285 B85
200 1 100 A 1012 100 B 100
RTAA Model Circuit/Tons Compressor/Tons240 1 140 A 70
B70
2 100 C 100
270 1 170 A 100
B70
2 100 C 100
300 1 200 A 100
B 100
2 100 C 100
340 1 140 A 70
B70
2 200 C 100
D 100
370 1 170 A 100
B70
2 200 C 100
D 100
400 1 200 A 100
B 100
2 200 C 100
D 100
Table 2
RTAA Refrigerant Circuit Designations and Capacities
Package Unit 130-200
Remote Evaporator Unit 130-200
P
N
LCOND 1 A
COND 2 B
Electronic
Expansion
Valves
P
N
LCOND 1
EVAP 1A
COND 2EVAP 2
B
EVAP 1
EVAP 2
240-300
P
N
L COND 2EVAP 2
EVAP 1COND 1
CA
B
340-400
P
N
L COND 2EVAP 2
EVAP 1COND 1
CA
DB 
						

							20RTAA-IOM-3
Warnings and Cautions
Warnings and Cautions appear in
boldface type at appropriate points in
this manual.
Warnings are provided to alert
personnel to potential hazards that can
result in personal injury or death; they
do not replace the manufacturer’s
recommendations.
Cautions alert personnel to conditions
that could result in equipment damage.
Your personal safety and reliable
operation of this machine depend upon
strict observance of these precautions.
The Trane Company assumes noliability for installation or serviceprocedures performed by unqualified
personnel,
Installation
Responsibilities
Generally, the contractor must do the
following when installing an RTAA unit:
[ ] Install unit on a flat foundation, level
(within 1/4 [6.4 mm]), and strong
enough to support unit loading.
[ ] Install unit per the instructions
contained in the Installation
Mechanical and Installation
Electrical sections of this manual.
[ ] Install any optional sensors and
make electrical connections at the
UCM.
Note: The standard leaving chilled
water sensor is factory installed in the
evaporator leaving water outlet.
[ ] Where specified, provide and install
valves in water piping upstream and
downstream of evaporator water
connections to isolate the
evaporator for maintenance, and to
balance/trim system.[ ] If desired, supply and install flow
switches in the chilled water piping;
interlock each switch with proper
pump starter to ensure unit can only
operate if water flow is established.
Chilled water flow protection is
provided by the UCM without the
need for a chilled water flow switch.
A flow switch for chilled water is
strictly discretionary.
[] For Remote Evaporator units only,
furnish and install refrigerant piping,
refrigerant and oil, per the
instructions outlined in this manual.
[ ] Furnish and install pressure gauges
in inlet and outlet piping of the
evaporator.
[ ] Furnish and install a drain valve to
the bottom of the evaporator.
[ ] Supply and install a vent cock to the
top of the evaporator.
[ ] Where specified, furnish and install
strainers ahead of all pumps and
automatic modulating valves.
[ ] Provide and install field wiring.
[ ] Start unit under supervision of a
qualified service technician.
[ ] Install heat tape and insulate the
chilled water lines and any other
portions of the system, as required,
to prevent sweating under normal
operating conditions or freezing
during low ambient temperature
conditions.