RTAD 085
Installation
Operation
Maintenance
Series R™ Air-Cooled Helical Rotary
Liquid Chiller
RTAD 085 - 180 (50Hz)
Standard, Free Cooling and Heat
Recovery models
RTAD-SVX01D-E4
General information
Foreword
These instructions are given as a
guide to good practice in the
installation, start-up, operation, and
maintenance by the user, of Trane
RTAD chillers. They do not contain
full service procedures
necessary for the continued
successful operation of this
equipment. The services of a qualified
technician should be employed
through the medium of a
maintenance contract with a
reputable service company. Read
this manual thoroughly before unit
start-up.
Units are assembled, pressure tested,
dehydrated, charged and run tested
before shipment.
Warnings and cautions
Warnings and Cautions appear at
appropriate sections throughout this
manual. Your personal safety and the
proper operation of this machine
require that you follow them
carefully. The constructor assumes no
liability for installations or servicing
performed by unqualified personnel.
WARNING! Indicates a potentially
hazardous situation which, if not
avoided, could result in death or
serious injury.
CAUTION! Indicates a potentially
hazardous situation which, if not
avoided, may result in minor or
moderate injury. It may also be used
to alert against unsafe practices or for
equipment or property-damage-only
accidents.
Safety recommendations
To avoid death, injury, equipment or
property damage, the following
recommendations should be
observed during maintenance and
service visits:
1. The maximum allowable pressures
for system leak testing on low and
high pressure side are given in the
chapter "Installation". Always
provide a pressure regulator.
2. Disconnect the main power supply
before any servicing on the unit.
©American Standard Inc. 2005
3. Service work on the refrigeration
system and the electrical system
should be carried out only by
qualified and experienced
personnel.
Reception
On arrival, inspect the unit before
signing the delivery note.
Reception in France only:
In case of visible damage: The
consignee (or the site representative)
must specify any damage on the
delivery note, legibly sign and date
the delivery note, and the truck driver
must countersign it. The consignee
(or the site representative) must
notify Trane Epinal Operations Claims team and send a copy of the
delivery note. The customer (or the
site representative) should send a
registered letter to the last carrier
within 3 days of delivery.
Note: for deliveries in France, even
concealed damage must be looked
for at delivery and immediately
treated as visible damage.
Reception in all countries except
France:
In case of concealed damage: The
consignee (or the site representative)
must send a registered letter to the last
carrier within 7 days of delivery,
claiming for the described damage. A
copy of this letter must be sent to
Trane Epinal Operations - Claims team.
Warranty
Warranty is based on the general
terms and conditions of the
manufacturer. The warranty is void if
the equipment is repaired or
modified without the written
approval of the manufacturer, if the
operating limits are exceeded or if
the control system or the electrical
wiring is modified. Damage due to
misuse, lack of maintenance or
failure to comply with the
manufacturer's instructions or
recommendations is not covered by
the warranty obligation. If the user
does not conform to the rules of this
manual, it may entail cancellation of
warranty and liabilities by the
manufacturer.
Refrigerant
The refrigerant provided by the
manufacturer meets all the
requirements of our units. When
using recycled or reprocessed
refrigerant, it is advisable to ensure
its quality is equivalent to that of a
new refrigerant. For this, it is
necessary to have a precise analysis
made by a specialized laboratory. If
this condition is not respected, the
manufacturer warranty could be
cancelled.
Maintenance contract
It is strongly recommended that you
sign a maintenance contract with
your local Service Agency. This
contract provides regular
maintenance of your installation by a
specialist in our equipment. Regular
maintenance ensures that any
malfunction is detected and corrected
in good time and minimizes the
possibility that serious damage will
occur. Finally, regular maintenance
ensures the maximum operating life
of your equipment. We would remind
you that failure to respect these
installation and maintenance
instructions may result in immediate
cancellation of the warranty.
Training
To assist you in obtaining the best
use of it and maintaining it in perfect
operating condition over a long
period of time, the manufacturer has
at your disposal a refrigeration and
air conditioning service school. The
principal aim of this is to give
operators and technicians a better
knowledge of the equipment they are
using, or that is under their charge.
Emphasis is particularly given to the
importance of periodic checks on the
unit operating parameters as well as
on preventive maintenance, which
reduces the cost of owning the unit
by avoiding serious and costly
breakdown.
RTAD-SVX01D-E4
Contents
General Information
RTAD-SVX01D-E4
2
Unit Inspection
Loose Parts Inventory
General Data - Standard cooling unit
General Data - Free-cooling unit
General Data - Heat Recovery unit
Unit Dimensions
6
6
7
15
17
21
Installation - Mechanical
22
Installation Responsibilities
Nameplates
Storage
Location Requirements
Isolation and Sound Emission
Neoprene Isolator Installation
Noise Considerations
Foundation
Clearances
Drainage
Unit Water Piping
Unit Piping
Entering Chilled Water Piping
Leaving Chilled Water Piping
Heat Recovery Water Piping
Evaporator Drain
Evaporator Flow Switch
Water Treatment
Water Pressure Gauges
Water Pressure Relief Valves
Freeze Protection
22
22
24
24
24
24
24
25
25
26
26
26
27
27
27
27
27
28
34
34
34
3
Contents
4
Installation - Electrical
35
General Recommendations
Installer-Supplied Components
Power Supply Wiring
Control Power Supply
Heater Power Supply
Water Pump Power Supply
Interconnecting Wiring
Chilled Water Flow (Pump) Interlock
Chilled Water Pump Control
Alarm and Status Relay Outputs (Programmable Relays)
Low Voltage Wiring
External Emergency Stop
External Auto/Stop
External Circuit Lockout - Circuit 1 and Circuit 2
Ice Making Option
External Chilled Water Setpoint (CWS)
External Current Limit Setpoint (CLS)
Outdoor Air Temperature Sensor
Communication Card CSR
Communication link connection procedure
LonTalk communication interface
35
40
40
40
40
40
41
41
41
44
46
46
46
46
47
47
48
48
49
49
50
Operating Principles
56
System schematics
56
Pre-Start Checkout
59
Installation Checklist
Receiving
Unit Location and Mounting
Unit Piping
Electrical Wiring
General
Unit Voltage Power Supply
Unit Voltage Imbalance
Unit Voltage Phasing
Water System Flow Rates
Water System Pressure Drop
59
59
59
59
59
60
61
61
61
62
62
RTAD-SVX01D-E4
Contents
RTAD-SVX01D-E4
Unit Start-up Procedures
63
Daily Unit Start-Up
General
Seasonal Unit Start-Up Procedure
System Restart After Extended Shutdown
63
64
65
65
Unit Shutdown Procedures
66
Temporary Shutdown And Restart
Extended Shutdown Procedure
66
66
Maintenance
67
General
Weekly Maintenance
Monthly Maintenance
Annual Maintenance
67
67
67
67
Maintenance Procedures
68
Refrigerant Emission Control
Refrigerant and Oil Charge Management
R134a Field Charging Procedure
Refrigerant Charging
Isolating the Refrigerant in the High Pressure Side
Isolating the Refrigerant in the Low Pressure Side
Adding Refrigerant
Refrigerant Filter Changing Procedure
Lubrication System
Oil Charging Procedure
Factory (initial) Oil Charging Procedure
Field Oil Charging Procedure
Evaporator Heat Tape Checkout Procedure
Safety recommendations
68
68
69
69
70
70
71
71
72
72
73
74
75
75
5
General Information
Figure 1 - Typical Unit Nameplate
6
Unit Inspection
Loose Parts Inventory
When the unit is delivered, verify
that it is the correct unit and that it is
properly equipped. Compare the
information which appears on the
unit nameplate with the ordering and
submittal information. A typical unit
nameplate is shown in Figure 1.
Check all the accessories and loose
parts which are shipped with the unit
against the shipping list. Included in
these items will be water vessel
drain plugs, rigging and electrical
diagrams, and service literature,
which are placed inside the control
panel and/or starter panel for
shipment.
RTAD-SVX01D-E4
General Information
General Data - SI Units
Table 1 - General Data RTAD Standard
Size
Compressor Quantity
Nominal Size (1)
(Tons)
Evaporator
Evaporator Model
Water Storage
(l)
Minimum Flow
(l/s)
Maximum Flow
(l/s)
Condenser
Qty of Coils
Coil Length
(mm)
Coil Height
(mm)
Fin series
(Fins/ft)
Number of Rows
Condenser Fans
Quantity (1)
Diameter
(mm)
Total Air Flow
(m3/s)
Nominal RPM
Tip Speed
(m/s)
Motor kW
(kW)
Min Starting/Oper Ambient (2)
Standard Unit
(°C)
Low Ambient Unit
(°C)
General Unit
Refrigerant
No. Of independent Refrigerant Circuits
% Min. Load (3)
Refrigerant Charge (1)
(kg)
Oil Charge (1)
(l)
Operating Weight (4)
(kg)
Shipping Weight (4)
(kg)
085
2
40/40
100
2
50/50
115
2
60/60
125
2
70/70
145
2
85/70
150
2
85/85
165
2
100/85
180
2
100/100
EG120
106
4.1
17.3
EG140
270
6.0
20.8
EG170
222
7.3
24.8
EG200
204
8.8
30.7
EG200
204
8.8
30.7
EG200
204
8.8
30.7
EG250
415
11.6
38.0
EG250
415
11.6
38.0
2
2743
1626
192
3/3
2
3658
1626
192
2/2
2
3658
1626
192
3/3
2
3658
1626
192
3/3
2
4572
1626
192
3/3
2
4572
1626
192
3/3
2
5486
1626
192
3/3
2
5486
1626
192
3/3
3/3
762
23.4
915
36.5
2.05
3/3
762
28.5
915
36.5
2.05
3/3
762
27.0
915
36.5
2.05
3/3
762
27.0
915
36.5
2.05
5/4
762
37.0
915
36.5
2.05
5/5
762
39.0
915
36.5
2.05
6/5
762
44.9
915
36.5
2.05
6/6
762
46.8
915
36.5
2.05
0
-18
0
-18
0
-18
0
-18
0
-18
0
-18
0
-18
0
-18
HFC 134a
2
17
24/24
6/6
2660
2554
HFC 134a
2
17
30/32
7/7
3105
2838
HFC 134a
2
17
35/36
9/9
3555
3333
HFC 134a
2
17
36/37
10/10
3570
3368
HFC 134a
2
17
44/48
10/10
4260
4057
HFC 134a
2
17
44/48
10/10
4520
4317
HFC 134a
2
17
61/59
15/11
5440
5023
HFC 134a
2
17
61/61
15/15
5525
5108
Table 2 - General Data RTAD High Efficiency
Size
Compressor Quantity
Nominal Size (1)
(Tons)
Evaporator
Evaporator Model
Water Storage
(l)
Minimum Flow
(l/s)
Maximum Flow
(l/s)
Condenser
Qty of Coils
Coil Length
(mm)
Coil Height
(mm)
Fin series
(Fins/ft)
Number of Rows
Condenser Fans
Quantity (1)
Diameter
(mm)
Total Air Flow
(m3/s)
Nominal RPM
Tip Speed
(m/s)
Motor kW
(kW)
Min Starting/Oper Ambient (2)
Standard Unit
(°C)
Low Ambient Unit
(°C)
General Unit
Refrigerant
No. Of independent Refrigerant Circuits
% Min. Load (3)
Refrigerant Charge (1)
(kg)
Oil Charge (1)
(l)
Operating Weight (4)
(kg)
Shipping Weight (4)
(kg)
085
2
40/40
100
2
50/50
115
2
60/60
125
2
70/70
145
2
85/70
150
2
85/85
EG140
270
6.0
20.8
EG170
222
7.3
24.8
EG200
204
8.8
30.7
EG200
204
8.8
30.7
EG250
415
11.6
38.0
EG250
415
11.6
38.0
2
3658
1626
192
3/3
2
3658
1626
192
3/3
2
4572
1626
192
3/3
2
4572
1626
192
3/3
2
5486
1626
192
3/3
2
5486
1626
192
3/3
3/3
762
27.0
915
36.5
2.05
4/4
762
31.2
915
36.5
2.05
4/4
762
35.0
915
36.5
2.05
5/5
762
39.0
915
36.5
2.05
6/5
762
44.8
915
36.5
2.05
6/6
762
46.8
915
36.5
2.05
0
-18
0
-18
0
-18
0
-18
0
-18
0
-18
HFC 134a
2
17
32/34
6/6
3240
2973
HFC 134a
2
17
35/36
7/7
3370
3148
HFC 134a
2
17
42/45
10/10
3905
3702
HFC 134a
2
17
42/45
10/10
4000
3797
HFC 134a
2
17
59/61
11/11
5390
4973
HFC 134a
2
17
59/61
11/11
5445
5028
Notes:
(1) Data containing information on two circuits shown as follows: ckt1/ckt2
(2) Minimum start-up/operation ambient based on a 2.22 m/s (5mph) wind across the condenser.
(3) Percent minimum load is for total machine at 10°C (50F) ambient and 7°C (44F) leaving chilled water temp. Not each individual circuit
(4) Weights with aluminium fins, power disconnect switch, isolators and pressure gauges
RTAD-SVX01D-E4
7
General Information
Table 3 - General Data RTAD Standard Low Noise
Size
Compressor Quantity
Nominal Size (1)
(Tons)
Evaporator
Evaporator Model
Water Storage
(l)
Minimum Flow
(l/s)
Maximum Flow
(l/s)
Condenser
Qty of Coils
Coil Length
(mm)
Coil Height
(mm)
Fin series
(Fins/ft)
Number of Rows
Condenser Fans
Quantity (1)
Diameter
(mm)
Total Air Flow
(m3/s)
Nominal RPM
Tip Speed
(m/s)
Motor kW
(kW)
Min Starting/Oper Ambient (2)
Standard Unit
(°C)
Low Ambient Unit
(°C)
General Unit
Refrigerant
No. Of independent Refrigerant Circuits
% Min. Load (3)
Refrigerant Charge (1)
(kg)
Oil Charge (1)
(l)
Operating Weight (4)
(kg)
Shipping Weight (4)
(kg)
085
2
40/40
100
2
50/50
115
2
60/60
125
2
70/70
145
2
85/70
150
2
85/85
165
2
100/85
180
2
100/100
EG120
106
4.1
17.3
EG140
270
6.0
20.8
EG170
222
7.3
24.8
EG200
204
8.8
30.7
EG200
204
8.8
30.7
EG200
204
8.8
30.7
EG250
415
11.6
38.0
EG250
415
11.6
38.0
2
2743
1626
192
3/3
2
3658
1626
192
2/2
2
3658
1626
192
3/3
2
3658
1626
192
3/3
2
4572
1626
192
3/3
2
4572
1626
192
3/3
2
5486
1626
192
3/3
2
5486
1626
192
3/3
3/3
762
18.1
730
29.1
1.30
3/3
762
22.4
730
29.1
1.30
3/3
762
21.0
730
29.1
1.30
3/3
762
21.0
730
29.1
1.30
5/4
762
28.7
730
29.1
1.30
5/5
762
30.1
730
29.1
1.30
6/5
762
34.7
730
29.1
1.30
6/6
762
36.2
730
29.1
1.30
0
-18
0
-18
0
-18
0
-18
0
-18
0
-18
0
-18
0
-18
HFC 134a
2
17
24/24
6/6
2760
2654
HFC 134a
2
17
30/32
7/7
3205
2938
HFC 134a
2
17
35/36
9/9
3655
3433
HFC 134a
2
17
36/37
10/10
3670
3468
HFC 134a
2
17
44/48
10/10
4360
4157
HFC 134a
2
17
44/48
10/10
4620
4417
HFC 134a
2
17
61/59
15/11
5540
5123
HFC 134a
2
17
61/61
15/15
5625
5208
Table 4 - General Data RTAD High Efficiency Low Noise
Size
Compressor Quantity
Nominal Size (1)
(Tons)
Evaporator
Evaporator Model
Water Storage
(l)
Minimum Flow
(l/s)
Maximum Flow
(l/s)
Condenser
Qty of Coils
Coil Length
(mm)
Coil Height
(mm)
Fin series
(Fins/ft)
Number of Rows
Condenser Fans
Quantity (1)
Diameter
(mm)
Total Air Flow
(m3/s)
Nominal RPM
Tip Speed
(m/s)
Motor kW
(kW)
Min Starting/Oper Ambient (2)
Standard Unit
(°C)
Low Ambient Unit
(°C)
General Unit
Refrigerant
No. Of independent Refrigerant Circuits
% Min. Load (3)
Refrigerant Charge (1)
(kg)
Oil Charge (1)
(l)
Operating Weight (4)
(kg)
Shipping Weight (4)
(kg)
085
2
40/40
100
2
50/50
115
2
60/60
125
2
70/70
145
2
85/70
150
2
85/85
EG140
270
6.0
20.8
EG170
222
7.3
24.8
EG200
204
8.8
30.7
EG200
204
8.8
30.7
EG250
415
11.6
38.0
EG250
415
11.6
38.0
2
3658
1626
192
3/3
2
3658
1626
192
3/3
2
4572
1626
192
3/3
2
4572
1626
192
3/3
2
5486
1626
192
3/3
2
5486
1626
192
3/3
3/3
762
21.0
690
27.5
1.30
4/4
762
24.1
690
27.5
1.30
4/4
762
27.2
690
27.5
1.30
5/5
762
30.1
690
27.5
1.30
6/5
762
34.7
690
27.5
1.30
6/6
762
36.1
690
27.5
1.30
0
-18
0
-18
0
-18
0
-18
0
-18
0
-18
HFC 134a
2
17
32/34
6/6
3340
3073
HFC 134a
2
17
35/36
7/7
3470
3248
HFC 134a
2
17
42/45
10/10
4005
3802
HFC 134a
2
17
42/45
10/10
4100
3897
HFC 134a
2
17
59/61
11/11
5490
5073
HFC 134a
2
17
59/61
11/11
5545
5128
Notes:
(1) Data containing information on two circuits shown as follows: ckt1/ckt2
(2) Minimum start-up/operation ambient based on a 2.22 m/s (5mph) wind across the condenser.
(3) Percent minimum load is for total machine at 10°C (50F) ambient and 7°C (44F) leaving chilled water temp. Not each individual circuit
(4) Weights with aluminium fins, power disconnect switch, isolators and pressure gauges
8
RTAD-SVX01D-E4
General Information
Table 5 - General Data RTAD Standard Low Noise with Night Noise Set Back option
Size
Compressor Quantity
Nominal Size (1)
(Tons)
Evaporator
Evaporator Model
Water Storage
(l)
Minimum Flow
(l/s)
Maximum Flow
(l/s)
Condenser
Qty of Coils
Coil Length
(mm)
Coil Height
(mm)
Fin series
(Fins/ft)
Number of Rows
Condenser Fans
Quantity (1)
Diameter
(mm)
Total Air Flow
(m3/s)
Nominal RPM
Tip Speed
(m/s)
Motor kW
(kW)
Min Starting/Oper Ambient (2)
Standard Unit
(°C)
Low Ambient Unit
(°C)
General Unit
Refrigerant
No. Of independent Refrigerant Circuits
% Min. Load (3)
Refrigerant Charge (1)
(kg)
Oil Charge (1)
(l)
Operating Weight (4)
(kg)
Shipping Weight (4)
(kg)
085
2
40/40
100
2
50/50
115
2
60/60
125
2
70/70
145
2
85/70
150
2
85/85
165
2
100/85
180
2
100/100
EG120
106
4.1
17.3
EG140
270
6.0
20.8
EG170
222
7.3
24.8
EG200
204
8.8
30.7
EG200
204
8.8
30.7
EG200
204
8.8
30.7
EG250
415
11.6
38.0
EG250
415
11.6
38.0
2
2743
1626
192
3/3
2
3658
1626
192
2/2
2
3658
1626
192
3/3
2
3658
1626
192
3/3
2
4572
1626
192
3/3
2
4572
1626
192
3/3
2
5486
1626
192
3/3
2
5486
1626
192
3/3
2/2
762
13.4
550
21.9
1.05
3/3
762
20.5
550
21.9
1.05
3/3
762
19.3
550
21.9
1.05
3/3
762
19.3
550
21.9
1.05
4/4
762
25.0
550
21.9
1.05
4/4
762
25.0
550
21.9
1.05
5/5
762
30.7
550
21.9
1.05
5/5
762
30.7
550
21.9
1.05
0
-18
0
-18
0
-18
0
-18
0
-18
0
-18
0
-18
0
-18
HFC 134a
2
17
24/24
6/6
2660
2554
HFC 134a
2
17
30/32
7/7
3205
2938
HFC 134a
2
17
35/36
9/9
3655
3433
HFC 134a
2
17
36/37
10/10
3670
3468
HFC 134a
2
17
44/48
10/10
4310
4107
HFC 134a
2
17
44/48
10/10
4520
4317
HFC 134a
2
17
61/59
15/11
5490
5073
HFC 134a
2
17
61/61
15/15
5525
5108
Table 6 - General Data RTAD High Efficiency Low Noise with Night Noise Set Back option
Size
Compressor Quantity
Nominal Size (1)
(Tons)
Evaporator
Evaporator Model
Water Storage
(l)
Minimum Flow
(l/s)
Maximum Flow
(l/s)
Condenser
Qty of Coils
Coil Length
(mm)
Coil Height
(mm)
Fin series
(Fins/ft)
Number of Rows
Condenser Fans
Quantity (1)
Diameter
(mm)
Total Air Flow
(m3/s)
Nominal RPM
Tip Speed
(m/s)
Motor kW
(kW)
Min Starting/Oper Ambient (2)
Standard Unit
(°C)
Low Ambient Unit
(°C)
General Unit
Refrigerant
No. Of independent Refrigerant Circuits
% Min. Load (3)
Refrigerant Charge (1)
(kg)
Oil Charge (1)
(l)
Operating Weight (4)
(kg)
Shipping Weight (4)
(kg)
085
2
40/40
100
2
50/50
115
2
60/60
125
2
70/70
145
2
85/70
150
2
85/85
EG140
270
6.0
20.8
EG170
222
7.3
24.8
EG200
204
8.8
30.7
EG200
204
8.8
30.7
EG250
415
11.6
38.0
EG250
415
11.6
38.0
2
3658
1626
192
3/3
2
3658
1626
192
3/3
2
4572
1626
192
3/3
2
4572
1626
192
3/3
2
5486
1626
192
3/3
2
5486
1626
192
3/3
3/3
762
19.2
550
21.9
1.05
3/3
762
19.2
550
21.9
1.05
4/4
762
24.9
550
21.9
1.05
4/4
762
25.0
550
21.9
1.05
5/5
762
30.6
550
21.9
1.05
5/5
762
30.6
550
21.9
1.05
0
-18
0
-18
0
-18
0
-18
0
-18
0
-18
HFC 134a
2
17
32/34
6/6
3340
3073
HFC 134a
2
17
35/36
7/7
3370
3148
HFC 134a
2
17
42/45
10/10
4005
3802
HFC 134a
2
17
42/45
10/10
4000
3797
HFC 134a
2
17
59/61
11/11
5440
5023
HFC 134a
2
17
59/61
11/11
5445
5028
Notes:
(1) Data containing information on two circuits shown as follows: ckt1/ckt2
(2) Minimum start-up/operation ambient based on a 2.22 m/s (5mph) wind across the condenser.
(3) Percent minimum load is for total machine at 10°C (50F) ambient and 7°C (44F) leaving chilled water temp. Not each individual circuit
(4) Weights with aluminium fins, power disconnect switch, isolators and pressure gauges
RTAD-SVX01D-E4
9
General Information
Table 7 - General Data RTAD Standard High External Static Pressure
Size
Compressor Quantity
Nominal Size (1)
(Tons)
Evaporator
Evaporator Model
Water Storage
(l)
Minimum Flow
(l/s)
Maximum Flow
(l/s)
Condenser
Qty of Coils
Coil Length
(mm)
Coil Height
(mm)
Fin series
(Fins/ft)
Number of Rows
Condenser Fans
Quantity (1)
Diameter
(mm)
Total Air Flow
(m3/s)
Nominal RPM
Tip Speed
(m/s)
Motor kW
(kW)
Min Starting/Oper Ambient (2)
Standard Unit
(°C)
Low Ambient Unit
(°C)
General Unit
Refrigerant
No. Of independent Refrigerant Circuits
% Min. Load (3)
Refrigerant Charge (1)
(kg)
Oil Charge (1)
(l)
Operating Weight (4)
(kg)
Shipping Weight (4)
(kg)
085
2
40/40
100
2
50/50
115
2
60/60
125
2
70/70
145
2
85/70
150
2
85/85
165
2
100/85
180
2
100/100
EG120
106
4.1
17.3
EG140
270
6.0
20.8
EG170
222
7.3
24.8
EG200
204
8.8
30.7
EG200
204
8.8
30.7
EG200
204
8.8
30.7
EG250
415
11.6
38.0
EG250
415
11.6
38.0
2
2743
1626
192
3/3
2
3658
1626
192
2/2
2
3658
1626
192
3/3
2
3658
1626
192
3/3
2
4572
1626
192
3/3
2
4572
1626
192
3/3
2
5486
1626
192
3/3
2
5486
1626
192
3/3
3/3
762
23.7
935
37.3
2.21
3/3
762
29.5
935
37.3
2.21
3/3
762
27.6
935
37.3
2.21
3/3
762
27.6
935
37.3
2.21
5/4
762
37.6
935
37.3
2.21
5/5
762
39.5
935
37.3
2.21
6/5
762
45.5
935
37.3
2.21
6/6
762
47.4
935
37.3
2.21
0
-18
0
-18
0
-18
0
-18
0
-18
0
-18
0
-18
0
-18
R134a
2
17
24/24
6/6
2660
2554
R134a
2
17
30/32
7/7
3105
2838
R134a
2
17
35/36
9/9
3555
3333
R134a
2
17
36/37
10/10
3570
3368
R134a
2
17
44/48
10/10
4260
4057
R134a
2
17
44/48
10/10
4520
4317
R134a
2
17
61/59
15/11
5440
5023
R134a
2
17
61/61
15/15
5525
5108
Table 8 - General Data RTAD High Efficiency High External Static Pressure
Size
Compressor Quantity
Nominal Size (1)
(Tons)
Evaporator
Evaporator Model
Water Storage
(l)
Minimum Flow
(l/s)
Maximum Flow
(l/s)
Condenser
Qty of Coils
Coil Length
(mm)
Coil Height
(mm)
Fin series
(Fins/ft)
Number of Rows
Condenser Fans
Quantity (1)
Diameter
(mm)
Total Air Flow
(m3/s)
Nominal RPM
Tip Speed
(m/s)
Motor kW
(kW)
Min Starting/Oper Ambient (2)
Standard Unit
(°C)
Low Ambient Unit
(°C)
General Unit
Refrigerant
No. Of independent Refrigerant Circuits
% Min. Load (3)
Refrigerant Charge (1)
(kg)
Oil Charge (1)
(l)
Operating Weight (4)
(kg)
Shipping Weight (4)
(kg)
085
2
40/40
100
2
50/50
115
2
60/60
125
2
70/70
145
2
85/70
150
2
85/85
EG140
270
6.0
20.8
EG170
222
7.3
24.8
EG200
204
8.8
30.7
EG200
204
8.8
30.7
EG250
415
11.6
38.0
EG250
415
11.6
38.0
2
3658
1626
192
3/3
2
3658
1626
192
3/3
2
4572
1626
192
3/3
2
4572
1626
192
3/3
2
5486
1626
192
3/3
2
5486
1626
192
3/3
3/3
762
27.6
935
37.3
2.21
4/4
762
31.5
935
37.3
2.21
4/4
762
35.6
935
37.3
2.21
5/5
762
39.4
935
37.3
2.21
6/5
762
45.4
935
37.3
2.21
6/6
762
47.3
935
37.3
2.21
0
-18
0
-18
0
-18
0
-18
0
-18
0
-18
R134a
2
17
32/34
6/6
3240
2973
R134a
2
17
35/36
7/7
3370
3148
R134a
2
17
42/45
10/10
3905
3702
R134a
2
17
42/45
10/10
4000
3797
R134a
2
17
59/61
11/11
5390
4973
R134a
2
17
59/61
11/11
5445
5028
Notes:
(1) Data containing information on two circuits shown as follows: ckt1/ckt2
(2) Minimum start-up/operation ambient based on a 2.22 m/s (5mph) wind across the condenser.
(3) Percent minimum load is for total machine at 10°C (50F) ambient and 7°C (44F) leaving chilled water temp. Not each individual circuit
(4) Weights with aluminium fins, power disconnect switch, isolators and pressure gauges
10
RTAD-SVX01D-E4
General Information
English Units
Table 9 - General Data RTAD Standard
Size
Compressor Quantity
Nominal Size (1)
(Tons)
Evaporator
Evaporator Model
Water Storage
(Gallon)
Minimum Flow
(GPM)
Maximum Flow
(GPM)
Condenser
Qty of Coils
Coil Length
(inch)
Coil Height
(inch)
Fin series
(Fins/ft)
Number of Rows
Condenser Fans
Quantity (1)
Diameter
(inch)
Total Air Flow
(CFM)
Nominal RPM
Tip Speed
(Ft/s)
Motor kW
(kW)
Min Starting/Oper Ambient (2)
Standard Unit
(°C)
Low Ambient Unit
(°C)
General Unit
Refrigerant
No. Of independent Refrigerant Circuits
% Min. Load (3)
Refrigerant Charge (1)
(lbs.)
Oil Charge (1)
(Gallon)
Operating Weight (4)
(lbs.)
Shipping Weight (4)
(lbs.)
085
2
40/40
100
2
50/50
115
2
60/60
125
2
70/70
145
2
85/70
150
2
85/85
165
2
100/85
180
2
100/100
EG120
28.0
65.2
274.6
EG140
71.3
95.1
329.9
EG170
58.7
115.0
393.1
EG200
53.9
139.2
486.4
EG200
53.9
139.2
486.4
EG200
53.9
139.2
486.4
EG250
109.6
184.0
603.0
EG250
109.6
184.0
603.0
2
108
64
192
3/3
2
144
64
192
2/2
2
144
64
192
3/3
2
144
64
192
3/3
2
180
64
192
3/3
2
180
64
192
3/3
2
216
64
192
3/3
2
216
64
192
3/3
3/3
30
49556
915
119.8
2.05
3/3
30
60460
915
119.8
2.05
3/3
30
57194
915
119.8
2.05
3/3
30
57248
915
119.8
2.05
5/4
30
78439
915
119.8
2.05
5/5
30
82716
915
119.8
2.05
6/5
30
95103
915
119.8
2.05
6/6
30
99250
915
119.8
2.05
32
0
32
0
32
0
32
0
32
0
32
0
32
0
32
0
HFC 134a
2
17
52.9/52.9
1.59/1.59
5864
5631
HFC 134a
2
17
66.1/70.5
1.85/1.85
6845
6257
HFC 134a
2
17
77.2/79.4
2.38/2.38
7837
7348
HFC 134a
2
17
79.4/81.6
2.64/2.64
7871
7425
HFC 134a
2
17
97/105.8
2.64/2.64
9392
8944
HFC 134a
2
17
97/105.8
2.64/2.64
9965
9517
HFC 134a
HFC 134a
2
2
17
17
134.5/130.1 134.5/134.5
3.96/2.91
3.96/3.96
11993
12181
11074
11261
Table 10 - General Data RTAD High Efficiency
Size
Compressor Quantity
Nominal Size (1)
(Tons)
Evaporator
Evaporator Model
Water Storage
(Gallon)
Minimum Flow
(GPM)
Maximum Flow
(GPM)
Condenser
Qty of Coils
Coil Length
(inch)
Coil Height
(inch)
Fin series
(Fins/ft)
Number of Rows
Condenser Fans
Quantity (1)
Diameter
(inch)
Total Air Flow
(CFM)
Nominal RPM
Tip Speed
(Ft/s)
Motor kW
(kW)
Min Starting/Oper Ambient (2)
Standard Unit
(°C)
Low Ambient Unit
(°C)
General Unit
Refrigerant
No. Of independent Refrigerant Circuits
% Min. Load (3)
Refrigerant Charge (1)
(lbs.)
Oil Charge (1)
(Gallon)
Operating Weight (4)
(lbs.)
Shipping Weight (4)
(lbs.)
085
2
40/40
100
2
50/50
115
2
60/60
125
2
70/70
145
2
85/70
150
2
85/85
EG140
71.3
95.1
329.9
EG170
58.7
115.0
393.1
EG200
53.9
139.2
486.4
EG200
53.9
139.2
486.4
EG250
109.6
184.0
603.0
EG250
109.6
184.0
603.0
2
144
64
192
3/3
2
144
64
192
3/3
2
180
64
192
3/3
2
180
64
192
3/3
2
216
64
192
3/3
2
216
64
192
3/3
3/3
30
57108
915
119.8
2.05
4/4
30
66046
915
119.8
2.05
4/4
30
74100
915
119.8
2.05
5/5
30
82628
915
119.8
2.05
6/5
30
95008
915
119.8
2.05
6/6
30
99132
915
119.8
2.05
32
0
32
0
32
0
32
0
32
0
32
0
HFC 134a
2
17
70.5/75.0
1.59/1.59
7143
6554
HFC 134a
2
17
77.2/79.4
1.85/1.85
7430
6940
HFC 134a
2
17
92.6/99.2
2.64/2.64
8609
8162
HFC 134a
2
17
92.6/99.2
2.64/2.64
8818
8371
HFC 134a
2
17
130.1/134.5
2.91/2.91
11883
10964
HFC 134a
2
17
130.1/134.5
2.91/2.91
12004
11085
Notes:
(1) Data containing information on two circuits shown as follows: ckt1/ckt2
(2) Minimum start-up/operation ambient based on a 2.22 m/s (5mph) wind across the condenser.
(3) Percent minimum load is for total machine at 10°C (50F) ambient and 7°C (44F) leaving chilled water temp. Not each individual circuit
(4) Weights with aluminium fins, power disconnect switch, isolators and pressure gauges
RTAD-SVX01D-E4
11
General Information
Table 11 - General Data RTAD Standard Low Noise
Size
Compressor Quantity
Nominal Size (1)
(Tons)
Evaporator
Evaporator Model
Water Storage
(Gallon)
Minimum Flow
(GPM)
Maximum Flow
(GPM)
Condenser
Qty of Coils
Coil Length
(inch)
Coil Height
(inch)
Fin series
(Fins/ft)
Number of Rows
Condenser Fans
Quantity (1)
Diameter
(inch)
Total Air Flow
(CFM)
Nominal RPM
Tip Speed
(Ft/s)
Motor kW
(kW)
Min Starting/Oper Ambient (2)
Standard Unit
(°C)
Low Ambient Unit
(°C)
General Unit
Refrigerant
No. Of independent Refrigerant Circuits
% Min. Load (3)
Refrigerant Charge (1)
(Lbs.)
Oil Charge (1)
(Gallon)
Operating Weight (4)
(Lbs.)
Shipping Weight (4)
(Lbs.)
085
2
40/40
100
2
50/50
115
2
60/60
125
2
70/70
145
2
85/70
150
2
85/85
165
2
100/85
180
2
100/100
EG120
28.0
65.2
274.6
EG140
71.3
95.1
329.9
EG170
58.7
115.0
393.1
EG200
53.9
139.2
486.4
EG200
53.9
139.2
486.4
EG200
53.9
139.2
486.4
EG250
109.6
184.0
603.0
EG250
109.6
184.0
603.0
2
108
64
192
3/3
2
144
64
192
2/2
2
144
64
192
3/3
2
144
64
192
3/3
2
180
64
192
3/3
2
180
64
192
3/3
2
216
64
192
3/3
2
216
64
192
3/3
3/3
30
38246
730
95.6
1.3
3/3
30
47434
730
95.6
1.3
3/3
30
44514
730
95.6
1.3
3/3
30
44568
730
95.6
1.3
5/4
30
60751
730
95.6
1.3
5/5
30
63878
730
95.6
1.3
6/5
30
73628
730
95.6
1.3
6/6
30
76644
730
95.6
1.3
32
0
32
0
32
0
32
0
32
0
32
0
32
0
32
0
HFC 134a
2
17
52.9/52.9
1.59/1.59
6085
5851
HFC 134a
2
17
66.1/70.5
1.85/1.85
7066
6477
HFC 134a
2
17
77.2/79.4
2.38/2.38
8058
7568
HFC 134a
2
17
79.4/81.6
2.64/2.64
8091
7646
HFC 134a
2
17
97/105.8
2.64/2.64
9612
9165
HFC 134a
2
17
97/105.8
2.64/2.64
10185
9738
HFC 134a
HFC 134a
2
2
17
17
134.5/130.1 134.5/134.5
3.96/2.91
3.96/3.96
12214
12401
11294
11482
Table 12 - General Data RTAD High Efficiency Low Noise
Size
Compressor Quantity
Nominal Size (1)
(Tons)
Evaporator
Evaporator Model
Water Storage
(Gallon)
Minimum Flow
(GPM)
Maximum Flow
(GPM)
Condenser
Qty of Coils
Coil Length
(inch)
Coil Height
(inch)
Fin series
(Fins/ft)
Number of Rows
Condenser Fans
Quantity (1)
Diameter
(inch)
Total Air Flow
(CFM)
Nominal RPM
Tip Speed
(Ft/s)
Motor kW
(kW)
Min Starting/Oper Ambient (2)
Standard Unit
(°C)
Low Ambient Unit
(°C)
General Unit
Refrigerant
No. Of independent Refrigerant Circuits
% Min. Load (3)
Refrigerant Charge (1)
(Lbs.)
Oil Charge (1)
(Gallon)
Operating Weight (4)
(Lbs.)
Shipping Weight (4)
(Lbs.)
085
2
40/40
100
2
50/50
115
2
60/60
125
2
70/70
145
2
85/70
150
2
85/85
EG140
71.3
95.1
329.9
EG170
58.7
115.0
393.1
EG200
53.9
139.2
486.4
EG200
53.9
139.2
486.4
EG250
109.6
184.0
603.0
EG250
109.6
184.0
603.0
2
144
64
192
3/3
2
144
64
192
3/3
2
180
64
192
3/3
2
180
64
192
3/3
2
216
64
192
3/3
2
216
64
192
3/3
3/3
30
44426
690
90.3
1.3
4/4
30
50964
690
90.3
1.3
4/4
30
57562
690
90.3
1.3
5/5
30
63784
690
90.3
1.3
6/5
30
73521
690
90.3
1.3
6/6
30
76510
690
90.3
1.3
32
0
32
0
32
0
32
0
32
0
32
0
HFC 134a
2
17
70.5/75.0
1.59/1.59
7363
6775
HFC 134a
2
17
77.2/79.4
1.85/1.85
7650
7161
HFC 134a
2
17
92.6/99.2
2.64/2.64
8830
8382
HFC 134a
2
17
92.6/99.2
2.64/2.64
9039
8591
HFC 134a
2
17
130.1/134.5
2.91/2.91
12103
11184
HFC 134a
2
17
130.1/134.5
2.91/2.91
12225
11305
Notes:
(1) Data containing information on two circuits shown as follows: ckt1/ckt2
(2) Minimum start-up/operation ambient based on a 2.22 m/s (5mph) wind across the condenser.
(3) Percent minimum load is for total machine at 10°C (50F) ambient and 7°C (44F) leaving chilled water temp. Not each individual circuit
(4) Weights with aluminium fins, power disconnect switch, isolators and pressure gauges
12
RTAD-SVX01D-E4
General Information
Table 13 - General Data RTAD Standard Low Noise with Night Noise Set Back option
Size
Compressor Quantity
Nominal Size (1)
(Tons)
Evaporator
Evaporator Model
Water Storage
(Gallon)
Minimum Flow
(GPM)
Maximum Flow
(GPM)
Condenser
Qty of Coils
Coil Length
(inch)
Coil Height
(inch)
Fin series
(Fins/ft)
Number of Rows
Condenser Fans
Quantity (1)
Diameter
(inch)
Total Air Flow
(CFM)
Nominal RPM
Tip Speed
(Ft/s)
Motor kW
(kW)
Min Starting/Oper Ambient (2)
Standard Unit
(°C)
Low Ambient Unit
(°C)
General Unit
Refrigerant
No. Of independent Refrigerant Circuits
% Min. Load (3)
Refrigerant Charge (1)
(lbs.)
Oil Charge (1)
(Gallon)
Operating Weight (4)
(lbs.)
Shipping Weight (4)
(lbs.)
085
2
40/40
100
2
50/50
115
2
60/60
125
2
70/70
145
2
85/70
150
2
85/85
165
2
100/85
180
2
100/100
EG120
28.0
65.2
274.6
EG140
71.3
95.1
329.9
EG170
58.7
115.0
393.1
EG200
53.9
139.2
486.4
EG200
53.9
139.2
486.4
EG200
53.9
139.2
486.4
EG250
109.6
184.0
603.0
EG250
109.6
184.0
603.0
2
108
64
192
37318
2
144
64
192
37289
2
144
64
192
37318
2
144
64
192
37318
2
180
64
192
37318
2
180
64
192
37318
2
216
64
192
37318
2
216
64
192
37318
2/2
30
28479
550
72.0
1.05
3/3
30
43376
550
72.0
1.05
3/3
30
40791
550
72.0
1.05
3/3
30
40842
550
72.0
1.05
4/4
30
52929
550
72.0
1.05
4/4
30
52962
550
72.0
1.05
5/5
30
64956
550
72.0
1.05
5/5
30
65000
550
72.0
1.05
32
0
32
0
32
0
32
0
32
0
32
0
32
0
32
0
HFC 134a
2
17
52.9/52.9
1.59/1.59
5864
5631
HFC 134a
2
17
66.1/70.5
1.85/1.85
7066
6477
HFC 134a
2
17
77.2/79.4
2.38/2.38
8058
7568
HFC 134a
2
17
79.4/81.6
2.64/2.64
8091
7646
HFC 134a
2
17
97/105.8
2.64/2.64
9502
9054
HFC 134a
2
17
97/105.8
2.64/2.64
9965
9517
HFC 134a
HFC 134a
2
2
17
17
134.5/130.1 134.5/134.5
3.96/2.91
3.96/3.96
12103
12181
11184
11261
Table 14 - General Data RTAD High Efficiency Low Noise with with Night Noise Set Back option
Size
Compressor Quantity
Nominal Size (1)
(Tons)
Evaporator
Evaporator Model
Water Storage
(Gallon)
Minimum Flow
(GPM)
Maximum Flow
(GPM)
Condenser
Qty of Coils
Coil Length
(inch)
Coil Height
(inch)
Fin series
(Fins/ft)
Number of Rows
Condenser Fans
Quantity (1)
Diameter
(inch)
Total Air Flow
(CFM)
Nominal RPM
Tip Speed
(Ft/s)
Motor kW
(kW)
Min Starting/Oper Ambient (2)
Standard Unit
(°C)
Low Ambient Unit
(°C)
General Unit
Refrigerant
No. Of independent Refrigerant Circuits
% Min. Load (3)
Refrigerant Charge (1)
(lbs.)
Oil Charge (1)
(Gallon)
Operating Weight (4)
(lbs.)
Shipping Weight (4)
(lbs.)
085
2
40/40
100
2
50/50
115
2
60/60
125
2
70/70
145
2
85/70
150
2
85/85
EG140
71.3
95.1
329.9
EG170
58.7
115.0
393.1
EG200
53.9
139.2
486.4
EG200
53.9
139.2
486.4
EG250
109.6
184.0
603.0
EG250
109.6
184.0
603.0
2
144
64
192
37318
2
144
64
192
37318
2
180
64
192
37318
2
180
64
192
37318
2
216
64
192
37318
2
216
64
192
37318
3/3
30
40710
550
72.0
1.05
3/3
30
40746
550
72.0
1.05
4/4
30
52846
550
72.0
1.05
4/4
30
52904
550
72.0
1.05
5/5
30
64872
550
72.0
1.05
5/5
30
64906
550
72.0
1.05
32
0
32
0
32
0
32
0
32
0
32
0
HFC 134a
2
17
70.5/75.0
1.59/1.59
7363
6775
HFC 134a
2
17
77.2/79.4
1.85/1.85
7430
6940
HFC 134a
2
17
92.6/99.2
2.64/2.64
8830
8382
HFC 134a
2
17
92.6/99.2
2.64/2.64
8818
8371
HFC 134a
2
17
130.1/134.5
2.91/2.91
11993
11074
HFC 134a
2
17
130.1/134.5
2.91/2.91
12004
11085
Notes:
(1) Data containing information on two circuits shown as follows: ckt1/ckt2
(2) Minimum start-up/operation ambient based on a 2.22 m/s (5mph) wind across the condenser.
(3) Percent minimum load is for total machine at 10°C (50F) ambient and 7°C (44F) leaving chilled water temp. Not each individual circuit
(4) Weights with aluminium fins, power disconnect switch, isolators and pressure gauges
RTAD-SVX01D-E4
13
General Information
Table 15 - General Data RTAD Standard High External Static Pressure
Size
Compressor Quantity
Nominal Size (1)
(Tons)
Evaporator
Evaporator Model
Water Storage
(Gallon)
Minimum Flow
(GPM)
Maximum Flow
(GPM)
Condenser
Qty of Coils
Coil Length
(inch)
Coil Height
(inch)
Fin series
(Fins/ft)
Number of Rows
Condenser Fans
Quantity (1)
Diameter
(inch)
Total Air Flow
(CFM)
Nominal RPM
Tip Speed
(Ft/s)
Motor kW
(kW)
Min Starting/Oper Ambient (2)
Standard Unit
(°C)
Low Ambient Unit
(°C)
General Unit
Refrigerant
No. Of independent Refrigerant Circuits
% Min. Load (3)
Refrigerant Charge (1)
(lbs.)
Oil Charge (1)
(Gallon)
Operating Weight (4)
(lbs.)
Shipping Weight (4)
(lbs.)
085
2
40/40
100
2
50/50
115
2
60/60
125
2
70/70
145
2
85/70
150
2
85/85
165
2
100/85
180
2
100/100
EG120
28.0
65.2
274.6
EG140
71.3
95.1
329.9
EG170
58.7
115.0
393.1
EG200
53.9
139.2
486.4
EG200
53.9
139.2
486.4
EG200
53.9
139.2
486.4
EG250
109.6
184.0
603.0
EG250
109.6
184.0
603.0
2
108
64
192
37683
2
144
64
192
37654
2
144
64
192
37683
2
144
64
192
37683
2
180
64
192
37683
2
180
64
192
37683
2
216
64
192
37683
2
216
64
192
37683
3/3
30
50118
935
122.4
2.21
3/3
30
62540
935
122.4
2.21
3/3
30
58514
935
122.4
2.21
3/3
30
58578
935
122.4
2.21
5/4
30
79569
935
122.4
2.21
5/5
30
83640
935
122.4
2.21
6/5
30
96363
935
122.4
2.21
6/6
30
100368
935
122.4
2.21
32
0
32
0
32
0
32
0
32
0
32
0
32
0
32
0
R134a
2
17
52.9/52.9
1.59/1.59
5864
5631
R134a
2
17
66.1/70.5
1.85/1.85
6845
6257
R134a
2
17
77.2/79.4
2.38/2.38
7837
7348
R134a
2
17
79.4/81.6
2.64/2.64
7871
7425
R134a
2
17
97/105.8
2.64/2.64
9392
8944
R134a
2
17
97/105.8
2.64/2.64
9965
9517
R134a
R134a
2
2
17
17
134.5/130.1 134.5/134.5
3.96/2.91
3.96/3.96
11993
12181
11074
11261
Table 16 - General Data RTAD High Efficiency High External Static Pressure
Size
Compressor Quantity
Nominal Size (1)
(Tons)
Evaporator
Evaporator Model
Water Storage
(Gallon)
Minimum Flow
(GPM)
Maximum Flow
(GPM)
Condenser
Qty of Coils
Coil Length
(inch)
Coil Height
(inch)
Fin series
(Fins/ft)
Number of Rows
Condenser Fans
Quantity (1)
Diameter
(inch)
Total Air Flow
(CFM)
Nominal RPM
Tip Speed
(Ft/s)
Motor kW
(kW)
Min Starting/Oper Ambient (2)
Standard Unit
(°C)
Low Ambient Unit
(°C)
General Unit
Refrigerant
No. Of independent Refrigerant Circuits
% Min. Load (3)
Refrigerant Charge (1)
(Lbs.)
Oil Charge (1)
(Gallon)
Operating Weight (4)
(Lbs.)
Shipping Weight (4)
(Lbs.)
085
2
40/40
100
2
50/50
115
2
60/60
125
2
70/70
145
2
85/70
150
2
85/85
EG140
71.3
95.1
329.9
EG170
58.7
115.0
393.1
EG200
53.9
139.2
486.4
EG200
53.9
139.2
486.4
EG250
109.6
184.0
603.0
EG250
109.6
184.0
603.0
2
144
64
192
37683
2
144
64
192
37683
2
180
64
192
37683
2
180
64
192
37683
2
216
64
192
37683
2
216
64
192
37683
3/3
30
58412
935
122.4
2.21
4/4
30
66796
935
122.4
2.21
4/4
30
75432
935
122.4
2.21
5/5
30
83562
935
122.4
2.21
6/5
30
96257
935
122.4
2.21
6/6
30
100248
935
122.4
2.21
32
0
32
0
32
0
32
0
32
0
32
0
R134a
2
17
70.5/75.0
1.59/1.59
7143
6554
R134a
2
17
77.2/79.4
1.85/1.85
7430
6940
R134a
2
17
92.6/99.2
2.64/2.64
8609
8162
R134a
2
17
92.6/99.2
2.64/2.64
8818
8371
R134a
2
17
130.1/134.5
2.91/2.91
11883
10964
R134a
2
17
130.1/134.5
2.91/2.91
12004
11085
Notes:
(1) Data containing information on two circuits shown as follows: ckt1/ckt2
(2) Minimum start-up/operation ambient based on a 2.22 m/s (5mph) wind across the condenser.
(3) Percent minimum load is for total machine at 10°C (50F) ambient and 7°C (44F) leaving chilled water temp. Not each individual circuit.
(4) Weights with aluminium fins, power disconnect switch, isolators and pressure gauges
14
RTAD-SVX01D-E4
General Information
Note:
All Free Cooling units must be freeze protected with 30% Ethylene Glycol in the cooling loop circuit which is the most convenient percentage in order to
protect the unit against freezing.
Protection coverage with 30% Ethylene Glycol:
- freezing point without burst effect = -13°C;
- freezing point with burst effect = -50°C.
Table 17 - General Data RTAD FC Standard
Unit Size
Number of Compressors
Nominal Size (1)
(Tons)
Evaporator
Evaporator Model
Water Storage
(l)
Minimum Flow
(l/s)
Maximum Flow
(l/s)
Free-Cooler
Number of Coils
Fin series
(Fins/ft)
Number of Rows
Water Storage (Evap+Free-Cooler)
(l)
Condenser
Number of Coils
Fin series
(Fins/ft)
Number of Rows
Condenser Fans
Quantity (1)
Diameter
(mm)
Total Air Flow
(m3/s)
Nominal Speed
(rpm)
Motor kW
(kW)
Min Starting/Oper Ambient(2)
(°C)
General Unit
Refrigerant
No. Of independent Refrigerant Circuits
% Min. Load (3)
Weight. Capacities & Dimensions
Refrigerant Charge (1)
(kg)
Oil Charge (1)
(l)
Operating Weight (4)
(kg)
Shipping Weight (4)
(kg)
Length
(mm)
Width
(mm)
Height
(mm)
Water Connection Diameter
(mm)
Water Connection Type
085
2
40/40
100
2
50/50
115
2
60/60
125
2
70/70
145
2
85/70
150
2
85/85
165
2
100/85
180
2
100/100
EG120
106
4.1
17.3
EG140
270
6
20.8
EG170
222
7.3
24.8
EG200
204
8.8
30.7
EG200
204
8.8
30.7
EG200
204
8.8
30.7
EG250
415
11.6
38
EG250
415
11.6
38
1
152
4
265
1
152
4
481
1
122
6
538
1
122
6
520
1
152
5
531
1
152
5
531
1
152
5
806
1
152
5
806
2
192
3/3
2
192
2/2
2
192
3/3
2
192
3/3
2
192
3/3
2
192
3/3
2
192
3/3
2
192
3/3
3/3
762
17.9/13.0
935/740
1.7/0.85
-18
3/3
762
21.6/15.7
935/740
1.7/0.85
-18
3/3
762
20.4/14.7
935/740
1.7/0.85
-18
4/4
762
23.5/17.2
935/740
1.7/0.85
-18
5/4
762
28.4/20.6
935/740
1.7/0.85
-18
5/5
762
29/21.2
935/740
1.7/0.85
-18
6/5
762
34.2/24.8
935/740
1.7/0.85
-18
6/6
762
34.7/25.4
935/740
1.7/0.85
-18
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
24/24
6/6
3685
3300
3900
2420
2605
139.7
Victaulic
30/32
7/7
4492
3740
4850
2420
2605
139.7
Victaulic
35/36
9/9
5291
4530
4850
2420
2605
139.7
Victaulic
36/37
10/10
5446
4720
4850
2420
2605
139.7
Victaulic
44/48
10/10
6296
5560
5770
2420
2645
139.7
Victaulic
44/48
10/10
6241
5505
5770
2420
2645
139.7
Victaulic
61/59
15/11
7884
6665
6810
2460
2745
168.3
Victaulic
61/61
15/15
7969
6750
6810
2460
2745
168.3
Victaulic
(1) Data containing information on two circuits shown as follows: ckt1/ckt2
(2) Minimum start-up/operation ambient based on a 2.22 m/s wind across the condenser
(3) Percent minimum load is for total machine at 10°C ambient and 7°C leaving chilled water temp. Not each individual circuit.
(4) Weights with aluminium fins, power disconnect switch, isolators and pressure gauges
RTAD-SVX01D-E4
15
General Information
Table 18 - General Data RTAD FC High Efficiency
Unit Size
Number of Compressors
Nominal Size (1)
(Tons)
Evaporator
Evaporator Model
Water Storage
(l)
Minimum Flow
(l/s)
Maximum Flow
(l/s)
Free-Cooler
Number of Coils
Fin series
(Fins/ft)
Number of Rows
Water Storage (Evap+Free-Cooler)
(l)
Condenser
Number of Coils
Fin series
(Fins/ft)
Number of Rows
Condenser Fans
Quantity (1)
Diameter
(mm)
Total Air Flow
(m3/s)
Nominal Speed
(rpm)
Motor kW
(kW)
Min Starting/Oper Ambient (2)
(°C)
General Unit
Refrigerant
No. Of independent Refrigerant Circuits
% Min. Load (3)
Weight. Capacities & Dimensions
Refrigerant Charge (1)
(kg)
Oil Charge (1)
(l)
Operating Weight (4)
(kg)
Shipping Weight (4)
(kg)
Length
(mm)
Width
(mm)
Height
(mm)
Water Connection Diameter
(mm)
Water Connection Type
085
2
40/40
100
2
50/50
115
2
60/60
125
2
70/70
145
2
85/70
150
2
85/85
EG 140
270
6
20.8
EG 170
222
7.3
24.8
EG 200
204
8.8
30.7
EG 200
204
8.8
30.7
EG 250
415
11.6
38
EG 250
415
11.6
38
1
152
4
481
1
122
6
538
1
152
5
531
1
152
5
531
1
152
5
806
1
152
5
806
2
192
3/3
2
192
3/3
2
192
3/3
2
192
3/3
2
192
3/3
2
192
3/3
3/3
762
20.8/15.1
935/740
1.7/0.85
-18
4/4
762
23.5/17.2
935/740
1.7/0.85
-18
4/4
762
26/18.9
935/740
1.7/0.85
-18
5/5
762
28.9/21.2
935/740
1.7/0.85
-18
6/5
762
34.1/24.8
935/740
1.7/0.85
-18
6/6
762
34.7/25.4
935/740
1.7/0.85
-18
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
32/34
6/6
4627
3875
4850
2420
2605
139.7
Victaulic
35/36
7/7
5106
4345
4850
2420
2605
139.7
Victaulic
42/45
10/10
5905
5170
5770
2420
2645
139.7
Victaulic
42/45
10/10
6000
5265
5770
2420
2645
139.7
Victaulic
59/61
11/11
7834
6615
6810
2460
2745
168.3
Victaulic
59/61
11/11
7889
6670
6810
2460
2745
168.3
Victaulic
(1) Data containing information on two circuits shown as follows: ckt1/ckt2
(2) Minimum start-up/operation ambient based on a 2.22 m/s wind across the condenser
(3) Percent minimum load is for total machine at 10°C ambient and 7°C leaving chilled water temp. Not each individual circuit.
(4) Weights with aluminium fins, power disconnect switch, isolators and pressure gauges
16
RTAD-SVX01D-E4
General Information
Table 19 - General Data RTAD Heat Recovery Standard
Unit Size
Number of Compressors
Nominal Size (1)
Evaporator
Evaporator Model
Water Storage
Minimum Flow
Maximum Flow
Water Connection Type
Water Connection Diameter
Heat Recovery Heat-Exchanger
Type
Water connection type
PHR
Connection diameter
Water Storage capacity
THR
Connection diameter
(Tons)
085
2
40/40
100
2
50/50
115
2
60/60
125
2
70/70
145
2
85/70
150
2
85/85
165
2
100/85
180
2
100/100
(l)
(l/s)
(l/s)
EG120
106
4.1
17.3
EG140
269
6
20.8
EG170
223
7.3
24.8
EG200
EG200
204
204
8.8
8.8
30.7
30.7
Victaulic
EG200
204
8.8
30.7
EG250
415
11.6
38.0
EG250
415
11.6
38.0
(inch-mm)
5"1/2 O.D.139.7
6" - 168.3
6" - 168.3
6" - 168.3
6" - 168.3
6" - 168.3
6" - 168.3
6" - 168.3
Brazed Plates
Victaulic
(inch-mm)
(l)
2" - 60.3
8
2" - 60.3
8
2" - 60.3
9
2" - 60.3
9
2" - 60.3
11
2" - 60.3
11
2" - 60.3
12
2" - 60.3
12
(inch-mm)
-
2" - 60.3
2" - 60.3
2" - 60.3
-
10
14
14
3" O.D. 76.1
16
3" O.D. 76.1
16
3" O.D. 76.1
19
3" O.D. 76.1
19
2
192
3/3
2
192
2/2
2
192
3/3
2
192
3/3
2
192
3/3
2
192
3/3
2
192
3/3
2
192
3/3
3/3
762
23.4
930
1.72
3/3
762
28.5
930
1.72
3/3
762
27.0
930
1.72
3/3
762
27.0
930
1.72
5/4
762
37.0
930
1.72
5/5
762
39.0
930
1.72
6/5
762
44.9
930
1.72
6/6
762
46.8
930
1.72
0
-18
0
-18
0
-18
0
-18
0
-18
0
-18
0
-18
0
-18
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
26/26
6/6
2736
2622
33/35
7/7
3176
2899
38/39
9/9
3635
3403
39/40
10/10
3650
3437
47/51
10/10
4345
4130
47/51
10/10
4605
4390
65/63
15/11
5535
5108
65/65
15/15
5622
5195
-
55 / 52
5/4
3347
3061
67 / 64
8/7
3833
3589
68 / 64
8/7
3848
3623
86 / 84
8/7
4615
4382
86 / 84
8/7
4875
4642
100 / 95
13 / 7
5806
5359
100 / 98
13 / 12
5891
5444
3507
2260
2095
4426
2260
2095
4426
2260
2095
4426
2260
2095
5351
2260
2115
5351
2260
2115
6370
2260
2215
6370
2260
2215
Water Storage capacity
(l)
Condenser
Number of Coils
Fin series
(Fins/ft)
Number of Rows
Condenser Fans
Quantity (1)
Diameter
(mm)
Total Air Flow
(m3/s)
Nominal Speed
(rpm)
Motor kW
(kW)
Min Starting/Oper Ambient (2)
PHR
(°C)
THR
(°C)
General Unit
Refrigerant
No. Of independent Refrigerant Circuits
% Min. Load (3)
Weight. Capacities & Dimensions
PHR
Refrigerant Charge (1)
(kg)
Oil Charge (1)
(l)
Operating Weight (4)
(kg)
Shipping Weight (4)
(kg)
THR
Refrigerant Charge (1)
(kg)
Oil Charge (1)
(l)
Operating Weight (4)
(kg)
Shipping Weight (4)
(kg)
Dimensions
Length
(mm)
Width
(mm)
Height
(mm)
(1) Data containing information on two circuits shown as follows: ckt1/ckt2
(2) Minimum start-up/operation ambient based on a 2.22 m/s wind across the condenser.
(3) Percent minimum load is for total machine at 10°C ambient and 7°C leaving chilled water temp. Not each individual circuit.
(4) With aluminum fins
RTAD-SVX01D-E4
17
General Information
Table 20 - General Data RTAD Heat Recovery High Efficiency
Unit Size
Number of Compressors
Nominal Size (1)
(Tons)
Evaporator
Evaporator Model
Water Storage
(l)
Minimum Flow
(l/s)
Maximum Flow
l/s)
Water Connection Type
Water Connection Diameter
(inch-mm)
Heat Recovery Heat-Exchanger
Type
Water connection type
PHR
Connection diameter
(inch-mm)
Water Storage capacity
(l)
THR
Connection diameter
(inch-mm)
Water Storage capacity
(l)
Condenser
Number of Coils
Fin series
(Fins/ft)
Number of Rows
Condenser Fans
Quantity (1)
Diameter
(mm)
Total Air Flow
(m3/s)
Nominal Speed
(rpm)
Motor kW
(kW)
Min Starting/Oper Ambient (2)
PHR
(°C)
THR
(°C)
General Unit
Refrigerant
No. Of independent Refrigerant Circuits
% Min. Load (3)
Weight. Capacities & Dimensions
PHR
Refrigerant Charge (1)
(kg)
Oil Charge (1)
(l)
Operating Weight (4)
(kg)
Shipping Weight (4)
(kg)
THR
Refrigerant Charge (1)
(kg)
Oil Charge (1)
(l)
Operating Weight (4)
(kg)
Shipping Weight (4)
(kg)
Dimensions
Length
(mm)
Width
(mm)
Height
(mm)
085
2
40/40
100
2
50/50
115
2
60/60
EG140
269
6
20.8
EG170
223
7.3
24.8
EG200
204
8.8
30.7
6" - 168.3
6" - 168.3
125
2
70/70
EG200
204
8.8
30.7
Victaulic
6" - 168.3
6" - 168.3
145
2
85/70
150
2
85/85
EG250
415
11.6
38.0
EG250
415
11.6
38.0
6" - 168.3
6" - 168.3
Brazed Plates
Victaulic
2" - 60.3
8
2" - 60.3
8
2" - 60.3
9
2" - 60.3
9
2" - 60.3
11
2" - 60.3
11
2" - 60.3
10
2" - 60.3
10
2" - 60.3
14
2" - 60.3
14
3" O.D. - 76.1
16
3" O.D. - 76.1
16
2
192
3/3
2
192
3/3
2
192
3/3
2
192
3/3
2
192
3/3
2
192
3/3
3/3
762
27.0
930
1.72
4/4
762
31.2
930
1.72
4/4
762
35.0
930
1.72
5/5
762
39.0
930
1.72
6/5
762
44.9
930
1.72
6/6
762
46.8
930
1.72
0
-18
0
-18
0
-18
0
-18
0
-18
0
-18
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
35/37
6/6
3311
2375
38/39
7/7
3441
2504
45/48
10/10
3984
3045
45/48
10/10
4079
3140
63/65
11/11
5474
4532
63/65
11/11
5529
4587
63 / 60
5/4
3494
3208
65 / 62
5/4
3624
3384
86 / 84
8/7
4238
4013
86 / 84
8/7
4333
4108
97 / 95
8/7
5731
5287
97 / 95
8/7
5786
5342
4426
2260
2095
4426
2260
2095
5351
2260
2115
5351
2260
2115
6370
2260
2215
6370
2260
2215
(1) Data containing information on two circuits shown as follows: ckt1/ckt2
(2) Minimum start-up/operation ambient based on a 2.22 m/s wind across the condenser.
(3) Percent minimum load is for total machine at 10°C ambient and 7°C leaving chilled water temp. Not each individual circuit.
(4) With aluminum fins
18
RTAD-SVX01D-E4
General Information
Table 21 - General Data RTAD Heat Recovery Standard Low Noise
Unit Size
Number of Compressors
Nominal Size (1)
Evaporator
Evaporator Model
Water Storage
Minimum Flow
Maximum Flow
Water Connection Type
Water Connection Diameter
Heat Recovery Heat-Exchanger
Type
Water connection type
PHR
Connection diameter
Water Storage capacity
THR
Connection diameter
(Tons)
085
2
40/40
100
2
50/50
115
2
60/60
125
2
70/70
145
2
85/70
150
2
85/85
165
2
100/85
180
2
100/100
(l)
(l/s)
(l/s)
EG120
106
4.1
17.3
EG140
269
6
20.8
EG170
223
7.3
24.8
EG200
EG200
204
204
8.8
8.8
30.7
30.7
Victaulic
EG200
204
8.8
30.7
EG250
415
11.6
38.0
EG250
415
11.6
38.0
(inch-mm)
5"1/2 O.D.139.7
6" - 168.3
6" - 168.3
6" - 168.3
6" - 168.3
6" - 168.3
6" - 168.3
6" - 168.3
Brazed Plates
Victaulic
(inch-mm)
(l)
2" - 60.3
8
2" - 60.3
8
2" - 60.3
9
2" - 60.3
9
2" - 60.3
11
2" - 60.3
11
2" - 60.3
12
2" - 60.3
12
(inch-mm)
-
2" - 60.3
2" - 60.3
2" - 60.3
-
10
14
14
3" O.D. 76.1
16
3" O.D. 76.1
16
3" O.D. 76.1
19
3" O.D. 76.1
19
2
192
3/3
2
192
2/2
2
192
3/3
2
192
3/3
2
192
3/3
2
192
3/3
2
192
3/3
2
192
3/3
3/3
762
18.1
750
1.23
3/3
762
22.4
750
1.23
3/3
762
21.0
750
1.23
3/3
762
21.0
750
1.23
5/4
762
28.7
750
1.23
5/5
762
30.1
750
1.23
6/5
762
34.7
750
1.23
6/6
762
36.2
750
1.23
0
-18
0
-18
0
-18
0
-18
0
-18
0
-18
0
-18
0
-18
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
26/26
6/6
2836
2082
33/35
7/7
3276
2520
38/39
9/9
3735
2978
39/40
10/10
3750
2991
47/51
10/10
4445
3686
47/51
10/10
4705
3946
65/63
15/11
5635
4873
65/65
15/15
5722
4960
-
55 / 52
5/4
3447
3161
67 / 64
8/7
3933
3689
68 / 64
8/7
3948
3723
86 / 84
8/7
4715
4482
86 / 84
8/7
4975
4742
100 / 95
13 / 7
5906
5459
100 / 98
13 / 12
5991
5544
3507
2260
2095
4426
2260
2095
4426
2260
2095
4426
2260
2095
5351
2260
2115
5351
2260
2115
6370
2260
2215
6370
2260
2215
Water Storage capacity
(l)
Condenser
Number of Coils
Fin series
(Fins/ft)
Number of Rows
Condenser Fans
Quantity (1)
Diameter
(mm)
Total Air Flow
(m3/s)
Nominal Speed
(rpm)
Motor kW
(kW)
Min Starting/Oper Ambient (2)
PHR
(°C)
THR
(°C)
General Unit
Refrigerant
No. Of independent Refrigerant Circuits
% Min. Load (3)
Weight. Capacities & Dimensions
PHR
Refrigerant Charge (1)
(kg)
Oil Charge (1)
(l)
Operating Weight (4)
(kg)
Shipping Weight (4)
(kg)
THR
Refrigerant Charge (1)
(kg)
Oil Charge (1)
(l)
Operating Weight (4)
(kg)
Shipping Weight (4)
(kg)
Dimensions
Length
(mm)
Width
(mm)
Height
(mm)
(1) Data containing information on two circuits shown as follows: ckt1/ckt2
(2) Minimum start-up/operation ambient based on a 2.22 m/s wind across the condenser.
(3) Percent minimum load is for total machine at 10°C ambient and 7°C leaving chilled water temp. Not each individual circuit.
(4) With aluminum fins
RTAD-SVX01D-E4
19
General Information
Table 22 - General Data RTAD Heat Recovery High Efficiency Low Noise
Unit Size
Number of Compressors
Nominal Size (1)
(Tons)
Evaporator
Evaporator Model
Water Storage
(l)
Minimum Flow
(l/s)
Maximum Flow
l/s)
Water Connection Type
Water Connection Diameter
(inch-mm)
Heat Recovery Heat-Exchanger
Type
Water connection type
PHR
Connection diameter
Water Storage capacity
(l)
THR
Connection diameter
(inch-mm)
Water Storage capacity
(l)
Condenser
Number of Coils
Fin series
(Fins/ft)
Number of Rows
Condenser Fans
Quantity (1)
Diameter
(mm)
Total Air Flow
(m3/s)
Nominal Speed
(rpm)
Motor kW
(kW)
Min Starting/Oper Ambient (2)
PHR
(°C)
THR
(°C)
General Unit
Refrigerant
No. Of independent Refrigerant Circuits
% Min. Load (3)
Weight. Capacities & Dimensions
PHR
Refrigerant Charge (1)
(kg)
Oil Charge (1)
(l)
Operating Weight (4)
(kg)
Shipping Weight (4)
(kg)
THR
Refrigerant Charge (1)
(kg)
Oil Charge (1)
(l)
Operating Weight (4)
(kg)
Shipping Weight (4)
(kg)
Dimensions
Length
(mm)
Width
(mm)
Height
(mm)
085
2
40/40
100
2
50/50
115
2
60/60
EG140
269
6
20.8
EG170
223
7.3
24.8
EG200
204
8.8
30.7
6" - 168.3
6" - 168.3
125
2
70/70
EG200
204
8.8
30.7
Victaulic
6" - 168.3
6" - 168.3
145
2
85/70
150
2
85/85
EG250
415
11.6
38
EG250
415
11.6
38
6" - 168.3
6" - 168.3
Brazed Plates
Victaulic
2" - 60.3
8
2" - 60.3
8
2" - 60.3
9
2" - 60.3
9
2" - 60.3
11
2" - 60.3
11
2" - 60.3
10
2" - 60.3
10
2" - 60.3
14
2" - 60.3
14
3" O.D. - 76.1
16
3" O.D. - 76.1
16
2
192
3/3
2
192
3/3
2
192
3/3
2
192
3/3
2
192
3/3
2
192
3/3
3/3
762
21.0
750
1.23
4/4
762
24.1
750
1.23
4/4
762
27.2
750
1.23
5/5
762
30.1
750
1.23
6/5
762
34.7
750
1.23
6/6
762
36.2
750
1.23
0
-18
0
-18
0
-18
0
-18
0
-18
0
-18
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
HFC 134a
2
17
35/37
6/6
3411
2655
38/39
7/7
3541
2784
45/48
10/10
4084
3325
45/48
10/10
4179
3420
63/65
11/11
5574
4812
63/65
11/11
5629
4867
63 / 60
5/4
3594
3308
65 / 62
5/4
3724
3484
86 / 84
8/7
4338
4113
86 / 84
8/7
4433
4208
97 / 95
8/7
5831
5387
97 / 95
8/7
5886
5442
4426
2260
2095
4426
2260
2095
5351
2260
2115
5351
2260
2115
6370
2260
2215
6370
2260
2215
(1) Data containing information on two circuits shown as follows: ckt1/ckt2
(2) Minimum start-up/operation ambient based on a 2.22 m/s wind across the condenser.
(3) Percent minimum load is for total machine at 10°C ambient and 7°C leaving chilled water temp. Not each individual circuit.
(4) With aluminum fins
20
RTAD-SVX01D-E4
General Information
Unit Dimensions
Figure 2 - Unit Dimensions and Minimum Recommended Clearances
Table 23
Unit Dimensions (mm)
Minimum clearances (mm)
Length
Width
Height
A
B
C
RTAD 085
3507
2260
2095
1200
1000
1000
RTAD 100-115-125
4426
2260
2095
1200
1000
1000
RTAD 145-150
5351
2260
2115
1200
1000
1000
RTAD 165-180
6370
2260
2215
1200
1000
1000
RTAD 085-100 HE
4426
2260
2095
1200
1000
1000
RTAD 115-125 HE
5351
2260
2115
1200
1000
1000
RTAD 145-150 HE
6370
2260
2215
1200
1000
1000
RTAD 085
3900
2420
2605
1200
1000
1000
RTAD 100-115-125
4850
2420
2605
1200
1000
1000
RTAD 145-150
5770
2420
2645
1200
1000
1000
RTAD 165-180
6810
2460
2745
1200
1000
1000
RTAD 085-100 HE
4850
2420
2605
1200
1000
1000
RTAD 115-125 HE
5770
2420
2645
1200
1000
1000
RTAD 145-150 HE
6810
2460
2745
1200
1000
1000
Unit Size
Standard, Partial Heat Recovery, and Total Heat Recovery
Free Cooling
Note: Size 085 does not exist for Total Heat Recovery option but HE version is available
RTAD-SVX01D-E4
21
Installation - Mechanical
Installation Responsibilities
Generally, the contractor must do the
following when installing an RTAD
unit:
❏ Install unit on a flat foundation,
level (within 1/4" [6 mm] across
the length of the unit), and strong
enough to support unit loading.
❏ Install unit per the instructions
contained in this manual.
❏ Install any optional sensors and
make electrical connections at the
UCM-CLD.
❏ 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.
❏ Furnish and install flow switch
and/or auxiliary contacts to prove
chilled water flow.
❏ Furnish and install pressure
gauges in inlet and outlet piping of
the evaporator.
22
❏ Furnish and install a drain valve to
the bottom of the evaporator shell.
❏ Supply and install a vent cock to
the top of the evaporator shell.
❏ Furnish and install strainers ahead
of all pumps and automatic
modulating valves.
❏ Provide and install field wiring.
❏ 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.
❏ Start unit under supervision of a
qualified service technician.
Nameplates
The RTAD outdoor unit nameplates
(Figure 1) are applied to the exterior
of the control panel. A compressor
nameplate is located on each
compressor.
Outdoor Unit Nameplate
The outdoor unit nameplate provides
the following information:
• Unit model and size description
• Unit serial number
• Identifies unit electrical
requirements
• Lists correct operating charges of
R-134a and refrigerant oil (Trane
OIL00048)
• Lists unit test pressures
Compressor Nameplate
The compressor nameplate provides
following information:
• Compressor model number.
• Compressor serial number.
• Compressor electrical
characteristics.
• Utilization range
• Recommended refrigerant
RTAD-SVX01D-E4
Installation - Mechanical
Figure 3 - Rigging the Unit
B
H
A
L
W
Table 24
Unit Size
Lengths (mm)
Maximum weight (kg)(1)
A
B
L
H max
W
Aluminium
Copper
RTAD 085
4000
2400
3507
2215
2260
2740
3070
RTAD 100-115-125
4000
2400
4426
2215
2260
3565
4005
RTAD 145-150
4000
2400
5351
2215
2260
4530
4940
RTAD 165-180
4000
2400
6370
2215
2260
5345
5855
RTAD 085-100 HE
4000
2400
4426
2215
2260
3345
3785
RTAD 115-125 HE
4000
2400
5351
2215
2260
4010
4560
RTAD 145-150 HE
4000
2400
6370
2215
2260
5265
5775
RTAD 085
4000
2400
3507
2215
2260
2810
3140
RTAD 100-115-125
4000
2400
4426
2215
2260
3635
4075
RTAD 145-150
4000
2400
5351
2215
2260
4605
5015
RTAD 165-180
4000
2400
6370
2215
2260
5430
5940
RTAD 085-100 HE
4000
2400
4426
2215
2260
3405
3845
RTAD 115-125 HE
4000
2400
5351
2215
2260
4080
4630
RTAD 145-150 HE
4000
2400
6370
2215
2260
5340
5850
RTAD 100
4000
2400
4426
2215
2260
3260
3540
RTAD 115-125
4000
2400
4426
2215
2260
3820
4260
RTAD 145-150
4000
2400
5351
2215
2260
4855
5265
RTAD 165-180
4000
2400
6370
2215
2260
5680
6190
RTAD 085-100 HE
4000
2400
4426
2215
2260
3580
3845
RTAD 115-125 HE
4000
2400
5351
2215
2260
4320
4870
RTAD 145-150 HE
4000
2400
6370
2215
2260
5580
6090
RTAD 085
4600
2600
3900
2605
2420
3485
-
RTAD 100-115-125
4600
2600
4850
2605
2420
4920
-
RTAD 145-150
4600
2600
5770
2645
2420
5720
-
RTAD 165-180
4600
2600
6810
2745
2460
6985
-
RTAD 085-100 HE
4600
2600
4850
2605
2420
4540
-
RTAD 115-125 HE
4600
2600
5770
2645
2420
5480
-
RTAD 145-150 HE
4600
2600
6810
2745
2460
6905
-
Standard
Partial Heat Recovery
Total Heat Recovery
Free Cooling
Note: Size 085 does not exist for Total Heat Recovery option but HE version is available
(1) Maximum weight with all options
RTAD-SVX01D-E4
23
Installation - Mechanical
Storage
Location Requirements
Extended storage of the outdoor unit
prior to installation requires the
following precautionary measures:
• Store the outdoor unit in a secure
area.
• At least every three months
(quarterly), check the pressure in
the refrigerant circuits to verify that
the refrigerant charge is intact. If it
is not, contact a qualified service
organization and the appropriate
Trane sales office.
• Close the discharge and liquid line
isolation valves.
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
elastomeric vibration eliminators.
Spring isolators are not
recommended. Consult an acoustical
engineer in critical sound
applications. For maximum isolation
effect, isolate water lines and
electrical conduit. Wall sleeves and
rubber isolated piping hangers can
be used to reduce the sound
transmitted through water piping. To
reduce the sound transmitted
through electrical conduit, 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. Sound power
levels for Trane air-cooled RTAD
chillers are available on request.
For additional reduction of sound
and vibration, install the optional
neoprene isolators. Construct an
isolated concrete pad for the unit or
provide concrete footings at the unit
mounting points. Mount the unit
directly to the concrete pads or
footings. Level the unit using the
base rail as a reference. Use shims
as necessary to level the unit.
CAUTION! Refer to nameplate for
unit weight and additional
installation instructions contained
inside the control panel. Other lifting
arrangements may cause equipment
damage or serious personal injury.
24
Neoprene Isolator (optional)
Installation
Refer to submittals for diagrams.
1 Secure the isolators to the
mounting surface using the
mounting slots in the isolator base
plate. DO NOT fully tighten the
isolator mounting bolts at this
time.
2 Align the mounting holes in the
base of the unit with the threaded
positioning pins on the top of the
isolators.
3 Lower the unit onto the isolators
and secure the isolator to the unit
with a nut. Maximum isolator
deflection should be 1/4 inch
(6 mm).
4 Level the unit carefully. Fully
tighten the isolator mounting bolts.
Noise Considerations
Locate the outdoor unit away from
sound sensitive areas. If required,
install rubber vibration isolators in
all water piping and use flexible
electrical conduit. Consult an
acoustical engineer for critical
applications. Also refer to Trane
Engineering Bulletins for application
information on RTAD chillers.
Important note for Free-cooling
units:
To reduce sound levels, a sound
enclosure can be mounted around
the compressors. For further sound
level reduction, the fan speed
should be forced onto low speed
(e.g. 740 rpm). This can be done
using the control panel. Make sure
that option 20, shown on the wiring
diagram, is correctly wired.
RTAD-SVX01D-E4
Installation - Mechanical
Foundation
Provide rigid, non-warping mounting
pads or a concrete foundation of
sufficient strength and mass to
support the outdoor unit operating
weight (i.e., including completed
piping, and full operating charges of
refrigerant, oil and water). Refer to
Tables 1-18 for unit operating
weights. Once in place, the outdoor
unit must be level within 1/4" (6 mm)
over its length and width. A base or
foundation is not required if the
selected unit location is level and
strong enough to support the unit's
operating weight. Trane is not
responsible for equipment problems
resulting from an improperly
designed or constructed foundation.
Note: To allow for cleaning under the
condensing coil, it is recommended
that an opening be left between the
unit base and the concrete pad.
Clearances
Refer to Figure 2 for minimum
clearances. Provide enough space
around the outdoor unit to allow the
installation and maintenance
personnel unrestricted access to all
service points. Refer to submittal
drawings for the unit dimensions. A
minimum of four feet is
recommended for compressor
service. Provide sufficient clearance
for the opening of control panel
doors. In all cases, local codes which
require additional clearances will
take precedence over these
recommendations.
RTAD-SVX01D-E4
Unobstructed flow of condenser air
is essential to maintain chiller
capacity and operating efficiency.
When determining unit placement,
give careful consideration to
assuring a sufficient flow of air
across the condenser heat transfer
surface. Two detrimental conditions
are possible and must be avoided if
optimum performance is to be
achieved: warm air recirculation and
coil starvation. Warm air recirculation
occurs when discharge air from the
condenser fans is recycled back to
the condenser coil inlet. Coil
starvation occurs when free airflow
to (or from) the condenser is
restricted. Both warm air
recirculation and coil starvation
cause reduction in unit efficiency and
capacity due to the increased head
pressures. Debris, trash, supplies etc.
should not be allowed to accumulate
in the vicinity of the unit. Supply air
movement may draw debris into the
condenser coil, blocking spaces
between coil fins and causing coil
starvation. Special consideration
should be given to low ambient
units. Condenser coils and fan
discharge must be kept free of snow
or other obstructions to permit
adequate airflow for satisfactory unit
operation.
25
Installation - Mechanical
In situations where equipment must
be installed with less clearance than
recommended, such as frequently
occurs in retrofit and rooftop
applications, restricted airflow is
common. The Main Processor will
direct the unit to make as much
chilled water as possible given the
actual installed conditions. Consult
your Trane sales engineer for more
details.
Note: If the outdoor unit
configuration requires a variance to
the clearance dimensions, contact
your Trane Sales Office
Representative. Also refer to Trane
Engineering Bulletins for application
information on RTAD chillers.
Drainage
Provide a large capacity drain for
water vessel drain-down during
shutdown or repair. The evaporator
is provided with a drain connection.
All local and national codes apply.
The vent on the top of the
evaporator shell is provided to
prevent a vacuum by allowing air
into the evaporator for complete
drainage.
26
Unit Water Piping
Unit Piping
Thoroughly flush all water piping to
the unit before making the final
piping connections to the unit.
CAUTION! If using an acidic
commercial flushing solution,
construct a temporary bypass
around the unit to prevent damage
to internal components of the
evaporator. To avoid possible
equipment damage, do not use
untreated or improperly treated
system water.
CAUTION! As the unit contains
pressure approved vessels and
sensitive electronic equipment, do
not use arc welding directly on the
unit or even close to the unit. Do not
weld near the Victaulic connections.
Components and layout will vary
slightly, depending on the location of
connections and the water source.
Note: The chilled water piping to the
evaporator is to be Victaulic type
connections. For Free Cooling units,
Free Cooling coil connections are
also to be VictaulicTM type
connections.
To prevent damage to chilled water
components, do not allow
evaporator pressure (maximum
working pressure) to exceed 16 bar.
Provide shutoff valves in lines to the
gauges to isolate them from the
system when they are not in use.
Use rubber vibration eliminators to
prevent vibration transmission
through the water lines. If desired,
install thermometers in the lines to
monitor entering and leaving water
temperatures. Install a balancing
valve in the leaving water line to
control water flow balance. Install
shutoff valves on both the entering
and leaving water lines so that the
evaporator can be isolated for
service.
CAUTION! A pipe strainer must be
installed in the entering water line.
Failure to do so can allow
waterborne debris to enter the
evaporator.
"Piping components" include all
devices and controls used to provide
proper water system operation and
unit operating safety. These
components and their general
locations are given below.
RTAD-SVX01D-E4
Installation - Mechanical
Entering Chilled Water
Piping
Leaving Chilled Water
Piping
❏ Air vents (to bleed air from
system).
❏ Water pressure gauges with
shutoff valves.
❏ Vibration eliminators.
❏ Shutoff (isolation) valves.
Thermometers (if desired).
❏ Clean-out tees.
❏ Pipe strainer.
CAUTION! Install strainer in
evaporator water inlet piping. Failure
to do so can result in evaporator
tube damage.
❏ Air vents (to bleed air from
system).
❏ Water pressure gauges with
shutoff valves.
❏ Vibration eliminators.
❏ Shutoff (isolation) valves.
❏Thermometers.
❏ Clean-out tees.
❏ Balancing valve.
❏ Flow Switch
CAUTION! To prevent evaporator
damage, do not exceed 16 bar
evaporator water pressure.
Heat Recovery Water Piping
Entering:
❏ Air vents
❏ Water pressure gauges
❏ Vibration eliminator / expansion
compensator
❏ Shutoff valve
❏Thermometers
❏ Pipe strainer
❏ Clean-out tees
Leaving:
❏ Air vents
❏ Water pressure gauges
❏ Vibration eliminator / expansion
compensator
❏ Shutoff valve
❏Thermometers
❏ Balancing valve
❏ Clean-out tees
RTAD-SVX01D-E4
Evaporator Drain
A 3/4" drain connection is located
under the evaporator shell. This may
be connected to a suitable drain to
permit evaporator drainage during
unit servicing. A shutoff valve must
be installed on the drain line.
Evaporator Flow Switch
Specific connection and schematic
wiring diagrams are shipped with
the unit. Some piping and control
schemes, particularly those using a
single water pump for both chilled
and hot water must be analyzed to
determine how and or if a flowsensing device will provide desired
operation.
Follow the manufacturer's
recommendations for selection and
installation procedures. General
guidelines for flow switch installation
are outlined below
1. Mount the switch upright, with a
minimum of 5 pipe diameters of
straight horizontal run on each
side. Do not install close to
elbows, orifices or valves.
Note: The arrow on the switch must
point in the direction of flow.
2. To prevent switch fluttering,
remove all air from the water
system.
Note: The UCM-CLD provides a
6-second time delay after a "loss-offlow" diagnostic before shutting the
unit down. Contact a qualified
service representative if nuisance
machine shutdowns persist.
3. Adjust the switch to open when
water flow falls below nominal.
Evaporator data is given in
Tables 1-22. Flow switch contacts are
closed on proof of water flow.
4. Install a pipe strainer in the
entering evaporator water line to
protect components from
waterborne debris.
27
Installation - Mechanical
Water Treatment
CAUTION! If calcium chloride is used
for water treatment, an applicable
corrosion inhibitor must also be
used. Failure to do so may result in
damage to system components.
Dirt, scale, products of corrosion and
other foreign material will adversely
affect heat transfer between the
water and system components.
Foreign matter in the chilled water
system can also increase pressure
drop and, consequently, reduce
water flow.
Figure 4 - Evaporator Water Pressure Drop RTAD
Proper water treatment must be
determined locally, depending on the
type of system and local water
characteristics. Neither salt nor
brackish water is recommended for
use in Trane air-cooled Series R™
chillers. Use of either will lead to a
shortened life to an indeterminable
degree. Trane encourages the
employment of a reputable water
treatment specialist, familiar with
local water conditions, to assist in
this determination and in the
establishment of a proper water
treatment program.
Using untreated or improperly
treated water in these units may
result in inefficient operation and
possible tube damage. Consult a
qualified water treatment specialist
to determine whether treatment is
needed. The following disclamatory
label is provided on each RTAD unit:
Note: The use of improperly treated
or untreated water in this equipment
may result in scaling, erosion,
corrosion, algae or slime. The
services of a qualified water
treatment specialist should be
engaged to determine what
treatment, if any, is advisable. Trane
warranty specifically excludes
liability for corrosion, erosion or
deterioration of Trane equipment.
CAUTION! Do not use untreated or
improperly treated water. Equipment
damage may occur.
1 = 085 STD
2 = 115 STD, 100 HE
3 = 100 STD, 085 HE
4 = 125 STD, 145 STD, 150 STD, 115 HE, 125 HE
5 = 165 STD, 180 STD, 145 HE, 150 HE
Note: Valid for standard, Free-cooling and Heat Recovery versions
28
RTAD-SVX01D-E4
Installation - Mechanical
Figure 5 - Water Pressure Drop RTAD Free Cooling - Compressor Mode
Figure 6 - Water Pressure Drop RTAD Free Cooling - Free Cooling Mode
1 = 085 STD
2 = 085 HE, 100 STD
3 = 100 HE, 115 STD
4 = 115 HE, 125 HE, 145 STD, 150 STD
5 = 125 STD
6 = 145 HE, 150 HE, 165 STD, 180 STD
RTAD-SVX01D-E4
29
Installation - Mechanical
Figure 7 - Condenser Water Pressure Drop RTAD Partial Heat Recovery - Heating Mode
1 = 085-100
2 = 115-125
3 = 145-150
4 = 165-180
Figure 8 - Condenser Water Pressure Drop RTAD Total Heat Recovery - Heating Mode
1 = 085-100
2 = 115-125
3 = 145-150
4 = 165-180
30
RTAD-SVX01D-E4
Installation - Mechanical
Figure 9 - 3-way Valve Pressure Drop RTAD Total Heat Recovery - Heating mode
1 = 085-100-115-125
2 = 145-150-165-180
Figure 10- Suggested piping for typical RTAD Standard and Heat Recovery evaporator
5
7
6
3
4
1
2
8
4
9
3
1
10
1.
2.
3.
4.
5.
RTAD-SVX01D-E4
Gate valve
Water strainer
Thermometer (user option)
Vibration eliminator
Relief valve
6. Valved pressure gauge
7. Vent
8. Drain
9. Flow switch (chilled water flow)
10. Balancing valve
31
Installation - Mechanical
Figure 11- Suggested piping for typical RTAD Free Cooling evaporator
1.
2.
3.
4.
5.
6.
Gate valve
Water strainer
Thermometer (user option)
Vibration eliminator
Relief valve
Valved pressure gauge
7. Vent
8. Drain
9. Flow switch (chilled water flow)
10. Balancing valve
Figure 12- Suggested condenser piping for typical RTAD PHR
A.
1.
2.
3.
4.
5.
32
Trane-supplied
Gate valve
Water strainer
Thermometer (user option)
Vibration eliminator
Relief valve
6. Valved pressure gauge
7. Vent
8. Drain
9. Flow switch (warm water flow)
10. Balancing valve
11. Clean out tee
RTAD-SVX01D-E4
Installation - Mechanical
Figure 13 - Suggested condenser piping for typical RTAD THR with 3-way valve
A. Trane-supplied with 3-way valve
option
1. Gate valve
2. Water strainer
3. Thermometer (user option)
4. Vibration eliminator
5. Relief valve
6. Valved pressure gauge
7. Vent
8. Drain
9. Flow switch (warm water flow)
10. Balancing valve
11. Clean out tee
Figure 14 - Suggested condenser piping for typical RTAD THR without 3-way valve
A. Trane-supplied without 3-way valve
option
1. Gate valve
2. Water strainer
3. Thermometer (user option)
4. Vibration eliminator
5. Relief valve
6. Valved pressure gauge
RTAD-SVX01D-E4
7. Vent
8. Drain
9. Flow switch (warm water flow)
10. Balancing valve
11. Clean out tee
33
Installation - Mechanical
Water Pressure Gauges
Freeze Protection
Install field-supplied pressure
components as shown in
Figure 10-14. Locate pressure gauges
or taps in a straight run of pipe;
avoid placement near elbows, etc. Be
sure to install the gauges at the
same elevation on each shell if the
shells have opposite-end water
connections.
To read manifolded pressure gauges,
open one valve and close the other
(depending upon the reading
desired). This eliminates errors
resulting from differently calibrated
gauges installed at unmatched
elevations.
If the unit will remain operational at
subfreezing ambient temperatures,
the chilled water system must be
protected from freezing, following
the steps listed below
1 Heaters are factory-installed on the
packaged unit evaporator and will
protect it from freezing in ambient
temperatures down to -18°C (0°F).
2 Install heat tape on all water
piping, pumps, and other
components that may be damaged
if exposed to freezing
temperatures. Heat tape must be
designed for low ambient
temperature applications. Heat
tape selection should be based on
the lowest expected ambient
temperature.
3 Add a non-freezing, low
temperature, corrosion inhibiting,
heat transfer fluid to the chilled
water system. The solution must be
strong enough to provide
protection against ice formation at
the lowest anticipated ambient
temperature. Refer to Tables 1-22
for evaporator water storage
capacities.
Note: Use of glycol type antifreeze
reduces the cooling capacity of the
unit and must be considered in the
design of the system specifications.
Water Pressure Relief
Valves
CAUTION! To prevent shell damage,
install pressure relief valves in the
evaporator water system.
Install a water pressure relief valve in
the evaporator inlet piping between
the evaporator and the inlet shutoff
valve, as shown in Figures 10 and 11.
Water vessels with close-coupled
shutoff valves have a high potential
for hydrostatic pressure buildup on a
water temperature increase. Refer to
applicable codes for relief valve
installation guidelines.
Protection coverage with 30%
Ethylene Glycol:
- freezing point without burst effect
= - 13°C;
- freezing point with burst effect
= - 50°C.
In ambient temperatures below
-18°C, the water circuit must be
protected against freezing by the one
of the following methods:
- purge the water circuit or add an an
anti-freeze fluid.
- Activate the heat tapes on the unit
and do not shut the unit down.
Heat Recovery Units
The heat recovery condenser(s) is
(are) insulated and a heater is
factory-installed and will protect
from freezing in ambient
temperatures down to -18°C.
Note: The inlet and outlet tubes and
the optional 3-way valve (Total Heat
Recovery units) should be protected
against freezing by one of the
following methods:
- install heat tape on all water piping
and around the 3-way valve
- add ethylene glycol or equivalent
anti-freeze fluid.
Note: All Free Cooling units must be
freeze protected with 30% Ethylene
Glycol in the cooling loop circuit
which is the most convenient
percentage in order to protect the
unit against freezing.
34
RTAD-SVX01D-E4
Installation - Electrical
General Recommendations
WARNING! The warning label shown
in Figure 15 is displayed on the
equipment. Strict adherence to these
warnings must be observed. Failure
to do so may result in personal
injury or death.
All wiring must comply with CE codes.
Typical field wiring diagrams are
included in the unit control panel.
Minimum circuit ampacities and other
unit electrical data are on the unit
nameplate and in the general data
tables. See the unit order specifications
for actual electrical data. Specific
electrical schematics and connection
diagrams are shipped with the unit.
CAUTION! To avoid corrosion and
overheating at terminal connections,
use copper conductors only. Failure
to do so may result in damage to the
equipment.
Do not allow conduit to interfere
with other components, structural
members or equipment. Control
voltage (115V) wiring in conduit
must be separate from conduit
carrying low voltage (<30V) wiring.
CAUTION! To prevent control
malfunctions, do not run low voltage
wiring (<30V) in conduit with
conductors carrying more than
30 volts.
Figure 15 - Warning Label
RTAD-SVX01D-E4
35
Installation - Electrical
Table 25 - Unit Wiring 400/3/50 - Standard cooling unit / Partial Heat Recovery and Total Heat Recovery units
Nbr of Power
Maximum
Starting
Connections
Amps (1)
Amps (2)
Unit Size
Standard
085
1
242
255
100
1
282
306
115
1
323
359
125
1
387
425
145
1
437
471
150
1
477
502
165
1
527
570
180
1
576
608
High Efficiency
085
1
242
255
100
1
291
315
115
1
332
368
125
1
405
443
145
1
446
480
150
1
486
511
High Ambient
085
1
242
255
100
1
291
315
115
1
332
368
125
1
405
443
145
1
446
480
150
1
486
511
165
1
527
570
180
1
576
608
Standard Low Noise
085
1
230
243
100
1
270
294
115
1
311
347
125
1
375
413
145
1
419
453
150
1
457
482
165
1
505
548
180
1
552
584
High Efficiency Low Noise
085
1
230
243
100
1
275
299
115
1
316
352
125
1
385
423
145
1
424
458
150
1
462
487
Standard Low Noise with Night Noise Set Back option
085
1
226
238
100
1
270
295
115
1
312
348
125
1
376
414
145
1
417
451
150
1
453
478
165
1
503
546
180
1
548
580
High Efficiency Low Noise with Night Noise Set Back option
085
1
231
244
100
1
270
295
115
1
317
353
125
1
381
419
145
1
381
456
150
1
381
483
36
Power
Factor (5)
Disconnect
Switch Size (A)
Compressor
Fuse Size (A)
Evaporator
heater (kW)
0.90
0.88
0.89
0.90
0.90
0.89
0.89
0.89
250
400
400
500
500
630
630
630
6 x 125
6 x 160
6 x 200
6 x 250
6 x 250
6 x 250
315 + 250
6 x 315
0.217
0.217
0.217
0.217
0.217
0.217
0.217
0.217
0.90
0.88
0.89
0.90
0.90
0.89
250
400
400
500
500
630
6 x 125
6 x 160
6 x 200
6 x 250
6 x 250
6 x 250
0.217
0.217
0.217
0.217
0.217
0.217
0.90
0.88
0.89
0.90
0.90
0.89
0.89
0.89
400
400
400
500
630
630
630
800
6 x 160
6 x 200
6 x 250
6 x 250
6 x 250
6 x 315
400 + 315
6 x 400
0.217
0.217
0.217
0.217
0.217
0.217
0.217
0.217
0.90
0.88
0.89
0.90
0.90
0.89
0.89
0.89
250
400
400
500
500
630
630
630
6 x 125
6 x 160
6 x 200
6 x 250
6 x 250
6 x 250
315 + 250
6 x 315
0.217
0.217
0.217
0.217
0.217
0.217
0.217
0.217
0.90
0.88
0.89
0.90
0.90
0.89
250
400
400
500
500
630
6 x 125
6 x 160
6 x 200
6 x 250
6 x 250
6 x 250
0.217
0.217
0.217
0.217
0.217
0.217
0.90
0.88
0.89
0.90
0.90
0.89
0.89
0.89
250
400
400
500
500
630
630
630
6 x 125
6 x 160
6 x 200
6 x 250
6 x 250
6 x 250
315 + 250
6 x 315
0.217
0.217
0.217
0.217
0.217
0.217
0.217
0.217
0.90
0.88
0.89
0.90
0.90
0.89
250
400
400
500
500
630
6 x 125
6 x 160
6 x 200
6 x 250
6 x 250
6 x 250
0.217
0.217
0.217
0.217
0.217
0.217
RTAD-SVX01D-E4
Installation - Electrical
Table 25 - Unit Wiring 400/3/50/ cont - Standard cooling unit / Partial Heat Recovery and Total Heat Recovery units
Nbr of Power
Maximum
Connections
Amps (1)
Unit Size
Standard with High External Static Pressure
085
1
231
100
1
278
115
1
319
125
1
383
145
1
427
150
1
463
165
1
516
180
1
561
High Efficiency with High External Static Pressure
085
1
239
100
1
278
115
1
327
125
1
391
145
1
435
150
1
471
Starting
Amps (2)
Power
Factor (5)
Disconnect
Switch Size (A)
Compressor
Fuse Size (A)
Evaporator
heater (kW)
244
302
355
421
461
488
559
593
0.90
0.88
0.89
0.90
0.90
0.89
0.89
0.89
250
400
400
500
500
630
630
630
6 x 125
6 x 160
6 x 200
6 x 250
6 x 250
6 x 250
315 + 250
6 x 315
0.217
0.217
0.217
0.217
0.217
0.217
0.217
0.217
251
302
363
429
469
496
0.90
0.88
0.89
0.90
0.90
0.89
250
400
400
500
500
630
6 x 125
6 x 160
6 x 200
6 x 250
6 x 250
6 x 250
0.217
0.217
0.217
0.217
0.217
0.217
Table 26 - Motor Data 400/3/50 - Standard cooling unit / Partial Heat Recovery and Total Heat Recovery units
Compressor (Each)
RLA Amps
Max Amps (3)
Unit Size
Qty
Ckt 1
Ckt 2
Ckt 1
Standard
085
2
80
80
106
100
2
95
95
125
115
2
111
111
146
125
2
135
135
178
145
2
162
135
214
150
2
162
162
214
165
2
196
162
259
180
2
196
196
259
High Efficiency
085
2
80
80
106
100
2
95
95
125
115
2
111
111
146
125
2
135
135
178
145
2
162
135
214
150
2
162
162
214
Standard Low Noise
085
2
80
80
106
100
2
95
95
125
115
2
111
111
146
125
2
135
135
178
145
2
162
135
214
150
2
162
162
214
165
2
196
162
259
180
2
196
196
259
High Efficiency Low Noise option
085
2
80
80
106
100
2
95
95
125
115
2
111
111
146
125
2
135
135
178
145
2
162
135
214
150
2
162
162
214
Standard Low Noise with Night Noise Set Back option
085
2
80
80
106
100
2
95
95
125
115
2
111
111
146
125
2
135
135
178
145
2
162
135
214
150
2
162
162
214
165
2
196
162
259
180
2
196
196
259
RTAD-SVX01D-E4
Fans (Each)
Starting Amps (4)
Control
Fans fuse
Ckt 2
Ckt 1
Ckt 2
Qty
kW
FLA
size (A)
VA
(400V)
A
106
125
146
178
178
214
214
259
144
180
217
259
291
291
354
354
144
180
217
259
259
291
291
354
6
6
6
6
9
10
11
12
2.05
2.05
2.05
2.05
2.05
2.05
2.05
2.05
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
3 x 50
3 x 50
3 x 50
3 x 50
3 x 63
3 x 63
3 x 63
3 x 63
1600
1600
1600
1600
1600
1600
1600
1600
4
4
4
4
4
4
4
4
106
125
146
178
178
214
144
180
217
259
291
291
144
180
217
259
259
291
6
8
8
10
11
12
2.05
2.05
2.05
2.05
2.05
2.05
4.5
4.5
4.5
4.5
4.5
4.5
3 x 50
3 x 50
3 x 50
3 x 50
3 x 63
3 x 63
1600
1600
1600
1600
1600
1600
4
4
4
4
4
4
106
125
146
178
178
214
214
259
144
180
217
259
291
291
354
354
144
180
217
259
259
291
291
354
6
6
6
6
9
10
11
12
1.30
1.30
1.30
1.30
1.30
1.30
1.30
1.30
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
3 x 50
3 x 50
3 x 50
3 x 50
3 x 63
3 x 63
3 x 63
3 x 63
1600
1600
1600
1600
1600
1600
1600
1600
4
4
4
4
4
4
4
4
106
125
146
178
178
214
144
180
217
259
291
291
144
180
217
259
259
291
6
8
8
10
11
12
1.30
1.30
1.30
1.30
1.30
1.30
2.5
2.5
2.5
2.5
2.5
2.5
3 x 50
3 x 50
3 x 50
3 x 50
3 x 63
3 x 63
1600
1600
1600
1600
1600
1600
4
4
4
4
4
4
106
125
146
178
178
214
214
259
144
180
217
259
291
291
354
354
144
180
217
259
259
291
291
354
4
6
6
6
8
8
10
10
1.05
1.05
1.05
1.05
1.05
1.05
1.05
1.05
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
3 x 50
3 x 50
3 x 50
3 x 50
3 x 63
3 x 63
3 x 63
3 x 63
1600
1600
1600
1600
1600
1600
1600
1600
4
4
4
4
4
4
4
4
37
Installation - Electrical
Table 26 - Motor Data 400/3/50/ cont - Standard cooling unit / Partial Heat Recovery and Total Heat Recovery units
Compressor (Each)
RLA Amps
Max Amps (3)
Unit Size
Qty
Ckt 1
Ckt 2
Ckt 1
High Efficiency Low Noise with Night Noise Set Back option
085
2
80
80
106
100
2
95
95
125
115
2
111
111
146
125
2
135
135
178
145
2
162
135
214
150
2
162
162
214
Standard with High External Static Pressure
085
2
80
80
106
100
2
95
95
125
115
2
111
111
146
125
2
135
135
178
145
2
162
135
214
150
2
162
162
214
165
2
196
162
259
180
2
196
196
259
High Efficiency with High External Static Pressure
085
2
80
80
106
100
2
95
95
125
115
2
111
111
146
125
2
135
135
178
145
2
162
135
214
150
2
162
162
214
Fans (Each)
Control
Starting Amps (4)
Fans fuse
Ckt 2
Ckt 1
Ckt 2
Qty
kW
FLA
size (A)
VA
(400V)
106
125
146
178
178
214
144
180
217
259
291
291
144
180
217
259
259
291
6
6
8
8
10
10
1.05
1.05
1.05
1.05
1.05
1.05
2.6
2.6
2.6
2.6
2.6
2.6
3 x 50
3 x 50
3 x 50
3 x 50
3 x 63
3 x 63
1600
1600
1600
1600
1600
1600
4
4
4
4
4
4
106
125
146
178
178
214
214
259
144
180
217
259
291
291
354
354
144
180
217
259
259
291
291
354
4
6
6
6
8
8
10
10
2.21
2.21
2.21
2.21
2.21
2.21
2.21
2.21
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3 x 50
3 x 50
3 x 50
3 x 50
3 x 63
3 x 63
3 x 63
3 x 63
1600
1600
1600
1600
1600
1600
1600
1600
4
4
4
4
4
4
4
4
106
125
146
178
178
214
144
180
217
259
291
291
144
180
217
259
259
291
6
6
8
8
10
10
2.21
2.21
2.21
2.21
2.21
2.21
3.9
3.9
3.9
3.9
3.9
3.9
3 x 50
3 x 50
3 x 50
3 x 50
3 x 63
3 x 63
1600
1600
1600
1600
1600
1600
4
4
4
4
4
4
Notes:
1. Maximum Compressors FLA + all fans FLA + control Amps
2. Starting Amps of the circuit with the largest compressor circuit including fans plus RLA of the second circuit including fans + control Amps
3. Maximum FLA per compressor.
4. Compressors starting Amps, Star delta start.
5. Compressor Power Factor
Table 27 - Compressor motor electrical data - 50 Hz - Free Cooling unit
Unit Size
RTAD 085 FC STD
RTAD 085 FC STD
RTAD 100 FC STD
RTAD 115 FC STD
RTAD 125 FC STD
RTAD 145 FC STD
RTAD 150 FC STD
RTAD 165 FC STD
RTAD 180 FC STD
RTAD 085 FC HE
RTAD 100 FC HE
RTAD 115 FC HE
RTAD 125 FC HE
RTAD 145 FC HE
RTAD 150 FC HE
Nominal voltage
(V/Ph/Hz)
400/3/50
400/3/50
400/3/50
400/3/50
400/3/50
400/3/50
400/3/50
400/3/50
400/3/50
400/3/50
400/3/50
400/3/50
400/3/50
400/3/50
400/3/50
Maximum unit kW
(kW)
149
149
169
199
244
268
291
294
352
149
174
204
249
273
296
Maximum RLA (1)
(A)
239
239
278
319
391
431
471
520
569
239
286
327
399
439
479
Starting amps
(A)
251
251
302
355
429
465
496
563
601
251
310
363
437
473
504
Power factor
0.90
0.90
0.88
0.89
0.90
0.90
0.89
0.89
0.89
0.90
0.88
0.89
0.90
0.90
0.89
(1) To take in account for the sizing of power cables
38
RTAD-SVX01D-E4
Installation - Electrical
Table 28 - General electrical data
Unit Size
RTAD 085 FC STD
RTAD 100 FC STD
RTAD 115 FC STD
RTAD 125 FC STD
RTAD 145 FC STD
RTAD 150 FC STD
RTAD 165 FC STD
RTAD 180 FC STD
RTAD 085 FC HE
RTAD 100 FC HE
RTAD 115 FC HE
RTAD 125 FC HE
RTAD 145 FC HE
RTAD 150 FC HE
Nominal voltage
(V/Ph/Hz)
400/3/50
400/3/50
400/3/50
400/3/50
400/3/50
400/3/50
400/3/50
400/3/50
400/3/50
400/3/50
400/3/50
400/3/50
400/3/50
400/3/50
Crankcase heater Compressor
(W)
150
150
150
150
150
150
150
150
150
150
150
150
150
150
Control circuit
(VA)
1600
1600
1600
1600
1600
1600
1600
1600
1600
1600
1600
1600
1600
1600
Short circuit intensity
(kA)
35
35
35
35
35
35
35
35
35
35
35
35
35
35
Table 29 - Electrical connections
Unit Size
RTAD 085 FC STD
RTAD 100 FC STD
RTAD 115 FC STD
RTAD 125 FC STD
RTAD 145 FC STD
RTAD 150 FC STD
RTAD 165 FC STD
RTAD 180 FC STD
RTAD 085 FC HE
RTAD 100 FC HE
RTAD 115 FC HE
RTAD 125 FC HE
RTAD 145 FC HE
RTAD 150 FC HE
Compressor fuse size (1)
(A)
6 x 125
6 x 160
6 x 200
6 x 250
6 x 250
6 x 250
315 + 250
6 x 315
6 x 125
6 x 160
6 x 200
6 x 250
6 x 250
6 x 250
Disconnect switch size (1)
(A)
250
400
400
500
500
630
630
630
250
400
400
500
500
630
Minimum connecting wire (1) Maximum connecting wire (1)
(mm²)
(mm²)
95
150
185
240
185
240
240
240
240
240
2 x 150
2 x 300
2 x 150
2 x 300
2 x 150
2 x 300
95
150
185
240
185
240
240
240
240
240
2 x 150
2 x 300
(1) To take in account for the sizing of power cables
RTAD-SVX01D-E4
39
Installation - Electrical
1. As standard, all units have single
point power connection.
2. LRA (Locked Rotor Amps) - based
on full winding (x-line) start units.
LRA for wye-delta starters is 1/3 of
LRA of x-line units.
3. VOLTAGE UTILIZATION RANGE:
Rated Voltage
400/50/3
Utilization Range
340-460
For the RTAD 100 only, the Utilization
Range is 360 - 460 Volts
Installer-Supplied
Components
CAUTION! Customer wiring interface
connections are shown in the
electrical schematics and connection
diagrams that are shipped with the
unit. The installer must provide the
following components if not ordered
with the unit:
❏ Power supply wiring (in conduit)
for all field-wired connections.
❏ All control (interconnecting) wiring
(in conduit) for field supplied
devices.
❏ Fused-disconnect switches or
circuit breakers.
❏ Power factor correction capacitors.
40
Power Supply Wiring
All power supply wiring must be
sized and selected accordingly by the
project engineer in accordance with
EN 60204.
WARNING! To prevent injury or
death, disconnect all electrical power
sources before completing wiring
connections to the unit.
All wiring must comply with CE
electrical codes. The installing (or
electrical) contractor must provide
and install the system
interconnecting wiring and the
power supply wiring. It must be
properly sized and equipped with the
appropriate fused disconnect
switches. The type and installation
location(s) of the fused disconnects
must comply with all applicable
codes.
CAUTION! Use only copper
conductors for terminal connections
to avoid corrosion or overheating.
Cut holes into the sides of the
control panel for the appropriately
sized power wiring conduits.
The wiring is passed through these
conduits and connected to the
terminal blocks, optional unitmounted disconnects, or circuit
breakers.
To provide proper phasing of 3-phase
input, make connections as shown in
field wiring diagrams and as stated
on the Warning label in the starter
panel. For additional information on
proper phasing, refer to "Unit Voltage
Phasing." Proper equipment ground
must be provided to each ground
connection in the panel (one for each
customer-supplied conductor per
phase).
Control Power Supply
The unit is equipped with a control
power transformer; it is not
necessary to provide additional
control power voltage to the unit. The
RTAD units are factory-connected for
400V/3/50 with a factory-installed
control power transformer.
Heater Power Supply
The evaporator shell is insulated
from ambient air and protected from
freezing temperatures by electric
heaters. A heater also protects the
heat recovery condenser(s).
Whenever the air temperature drops
to approximately 37°F (2.8°C), the
thermostat energizes the heaters.
The heaters will provide protection
from ambient temperatures down to
-18°C (0°F). The heaters are factorywired back to the unit control panel.
As an option, the heater will be
energized by a thermostat when the
temperature drops to approximately
3°C.
CAUTION! Control panel main
processor does not check for loss of
power to the heat tape nor does it
verify thermostat operation. A
qualified technician must verify
power to the heat tape and confirm
operation of the heat tape
thermostat to avoid catastrophic
damage to the evaporator.
Water Pump Power Supply
Provide power supply wiring with
fused disconnect for the chilled
water pump(s).
RTAD-SVX01D-E4
Installation - Electrical
Interconnecting Wiring
Chilled Water Flow (Pump) Interlock
The model RTAD chiller requires a
field-supplied control voltage contact
input through a flow proving switch
6S56 and an auxilary contact 6K51 of
the chilled water pump contactor.
IMPORTANT: Do not turn the chiller
on or off using the chilled-water
interlocks.
When making field connections,
refer to the appropriate field layout,
wiring schematics, and control
diagrams that ship with the unit.
Chilled-water pump control
CAUTION! The chilled-water pump
must operate for a minimum of one
minute after the UCM-CLD receives a
command, through the external
Auto/Stop input, to shut down the
chilled-water system.
On the RTAD units, the controller will
initiate the "Run:Unload" mode to
terminate a cycle from any of the
following:
• Stop key pressed
• Loss of load
• External Auto/Stop input opened
The "Run:Unload" operating mode
commands the compressor to
completely unload, which takes
about ½ minute. This will allow the
compressors to be totally unloaded
for the next start-up. If only the
proof-of-chilled-water-flow interlock
is used, the chiller will shut down
with an immediate (non-friendly)
shutdown and initiate an automatic
reset diagnostic.
RTAD-SVX01D-E4
1. External Auto/Stop (terminals
A1TB3-3 and -4). This input is
supplied by the field. A contact
closure will start the chiller water
pump and chiller, via the UCM-CLD
pump control contacts. Opening
the contact will put the operating
compressors into "Run:Unload"
mode and initiate a timing period
(1 to 30 minutes, adjustable
through the Clear Language
Display). This will delay
termination of the chilled-water
pump operation via the UCM
pump control contacts. Examples
of the input terminals 1UTB3-3
and -4 would be a time clock,
ambient thermostat, building
automation system, etc.
2. UCM-CLD Pump Control Contacts
(Terminals A1 TB4-8 and -9)
This output is a set of contacts that
will close, starting the chilled-water
pump when the external Auto/Stop
contacts are closed. When the
contacts are opened, 1 to 30 minutes
later (adjustable through the Clear
Language Display), the UCM-CLD
pump control contacts open.
3. Proof-of-Chilled-Water-Flow
Interlock (Terminals A1 TB3-1
and -2)
This terminal must be field-installed.
Contact closure between the
terminals indicates proof of chilledwater flow. Examples of this are a
pump starter auxiliary contact, flow
switch, differential pressure switch,
or a contact from a building
automation system. Opening of this
contact will immediately shut down
the chiller and initiate an automatic
reset diagnostic, indicating loss of
chilled-water flow.
41
Installation - Electrical
Specification for Free Cooling units:
1. External Auto/Stop (terminals A70
J8-IDH14 and 6X2-1).
This input is supplied by the field. A
contact closure will start the chiller
water pump and chiller, via the UCMCLD and A70 (regulation for Free
Cooling mode) pump control
contacts. Opening the contact will
put the operating compressors into
"Run:Unload" mode and initiate a
timing period (1 to 30 minutes,
adjustable through the Clear
Language Display). This will delay
termination of the chilled-water
pump operation via the UCM pump
control contacts. Examples of the
input terminals 1UTB3-3 and -4
would be a time clock, ambient
thermostat, building automation
system, etc.
2. UCM-CLD and A 70 Pump Control
Contacts (Terminals A70 J14-C7
and -NO7)
This output is a set of contacts that
will close, starting the chilledwater pump when the external
Auto/Stop contacts are closed.
When the contacts are opened,
1 to 30 minutes later (adjustable
through the Clear Language
Display), the UCM-CLD and A70
pump control contacts open.
42
3. Proof-of-Chilled-Water-Flow
Interlock (Terminals A70 J18-IDC13
and -ID13H)
This terminal must be fieldinstalled. Contact closure between
the terminals indicates proof of
chilledwater flow. Examples of this
are a pump starter auxiliary
contact, flow switch, differential
pressure switch, or a contact from
a building automation system.
Opening of this contact will
immediately shut down the chiller
and initiate an automatic reset
diagnostic, indicating loss of
chilled-water flow.
4. Free Cooling enable input
(terminals A70 J5-IDI and 6X2-4).
This input is supplied by the field.
This is a digital input that indicates
if the Free Cooling mode is
validated, or if only the
Compressor mode must run. If this
input is open, then only the
Compressor mode will be
available. If this input is close,
then the control will select the best
mode (Free Cooling mode or
Compressor mode).
RTAD-SVX01D-E4
Installation - Electrical
Specification for Total Heat Recovery
units
The heat recovery mode should be
validated by a dry contact supplied
by the field. The chiller will run in
heat recovery mode if the dry
contact is closed and if there is a
need for cooling. A 3-way valve will
protect the operation of the chiller
when the return hot water
temperature is too low. This 3-way
valve will not be used if a variable
speed pump is used. In this case,
the control module for Heat
Recovery (A70) will provide a 2-10V
output proportional to the water
flow.
Note: the hot water pump should run
at least 3 minutes after heat recovery
mode is off. During these 3 minutes,
the water flow through the heat
recovery condenser will gradually be
reduced to switch smoothly to the
conventional cooling mode. See
Figure 16 for details.
Figure 13 - Control wiring for pump
RTAD-SVX01D-E4
43
Installation - Electrical
Alarm and Status Relay Output
(Programmable Relays)
Alarm/Running/Maximum Capacity
Outputs Terminals 1 to 7 on terminal
strip TB4 of the A1 board provide a
variety of contact outputs on the
RTAD. These are dependent on the
setting of Programmable Relay Setup
(Service Setting Menu) and its
relationship to diagnostics,
compressors operating, and the
system operating at full
capacity. As shown in Figure 17, there
are three relays.
Notes: For Free Cooling units a
programmable relay output
(terminals A70 J17-C12-NO12 and
-NC12) is available. It provides a
normally close contact. Following
functions are available:
❏ A70 ready to work, or working: the
normally open contact will close as
soon as the controller is powered
and run, without any sensor(s) or
sequence(s) failure.
❏ A70 failure: the normally open
contact will close as long as there
is a failure detect on sensor(s) or in
sequence(s).
❏ Free cooling on: the normally open
contact will close as long as the
unit is making cold water with free
cooling.
Figure 17 - Alarm / Running / Maximum capacity relay output for the RTAD unit.
44
RTAD-SVX01D-E4
Installation - Electrical
Table 30 - Alarm / Running / Maximum capacity relay output configuration
Relay output configuration
1
Relay 1
Relay 2
Relay 3
Alarm
Compressor running
Maximum capacity
2
Relay 1
Relay 2
Relay 3
Circuit 1 alarm
Circuit 2 alarm
Maximum capacity
3
Relay 1
Relay 2
Relay 3
Alarm
Circuit 1 running
Circuit 2 running
Table 31 - Alarm / Running / Maximum capacity menu setting
Programmable Relay
Setup Setting
(service setting menu)
1
2
3
4
5
6
7
8
9
10
11
12
Relay Output
Configuration
(Table 26)
1
1
1
1
2
2
2
2
3
3
3
3
Diagnostic that the
Alarm relay(s) is active
MMR / CMR
diag.
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
MAR / CAR
diag.
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
IFW
diag.
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
YES
Notes:
MMR: Machine Manual Reset
CMR: Circuit Manual Reset
MAR: Machine Auto Reset
CAR: Circuit Auto Reset
IFW: Informational Warnings
RTAD-SVX01D-E4
45
Installation - Electrical
Low-voltage wiring
The remote devices described below
require low-voltage wiring. All wiring
to and from these remote analog
devices to the UCM-CLD (and A70 for
Free cooling/Heat Recovery units), as
described in this paragraph, must be
made with shielded, twisted-pair
conductors. Be sure to ground the
shielding only at the Clear Language
Display.
CAUTION! To prevent control
malfunction, do not run low-voltage
wiring (<30V) in conduits with
conductors carrying more than 30 V.
External Emergency stop
(normal trip)
External circuit lockout Circuit 1
The Clear Language Display provides
auxiliary control for a customerspecified or -installed latching
tripout. When this remote contact
6S2 (furnished by the customer) is
provided, the chiller will run
normally when the contact is closed.
When the contact opens, the unit will
trip off on a manually resettable
diagnostic. This condition requires
manual reset at the chiller switch on
the front of the Clear Language
Display. To connect, first remove the
jumper located between terminal 3
and 4 of A1 TB1. Refer to the field
diagrams that are shipped with the
unit.
The UCM provides auxiliary control
of a customer-specified or -installed
contact closure, for individual
operation of circuit number 1. If the
contact is closed, the refrigerant
circuit will not operate. The
refrigerant circuit will run normally
when the contact is opened. External
circuit lockout will only function if
External Circuit Lockout (service
setting Menu) is enabled.
Connections are shown in the field
diagrams that are shipped with the
unit.
External Auto/Stop
If the unit requires the external
Auto/Stop function, the installer
must provide leads from the
remote contacts 6S1 to the proper
terminals of the module A1 (to A70
for Free-cooling units) terminals
TB3-3 and TB3-4 (J8-IDH14 and 6X2-1
for Free cooling/Heat Recovery
units), in the control panel.
The chiller will run normally when
the contact is closed. When the
contact opens, the compressor(s), if
operating, will go to the
RUN:UNLOAD operating mode and
cycle off. Unit operation will be
inhibited. Re-closure of the contacts
will permit the unit to automatically
return to normal operation. Fieldsupplied contacts for all low voltage
connections must be compatible
with dry circuit 24VDC for a 12 mA
resistive load. Refer to the field
diagrams that are shipped with the
unit.
46
External circuit lockout Circuit 2
The UCM provides auxiliary control
of a customer-specified or -installed
contact closure, for individual
operation of circuit number 2. If the
contact is closed, the refrigerant
circuit will not operate. The
refrigerant circuit will run normally
when the contact is opened. External
circuit lockout will only function if
External Circuit Lockout (service
setting Menu) is enabled.
Connections are shown in the field
diagrams that are shipped with the
unit.
RTAD-SVX01D-E4
Installation - Electrical
Ice-making option
Ice-machine control (Operator
Setting Menu) must be enabled. The
UCM provides auxiliary control for a
customer-specified or installed
contact closure for ice making. When
the remote contact connected to the
module A9, terminals TB1 1 and 2, is
provided, the chiller will run
normally when the contact is open.
Upon contact closure, the UCM will
initiate an ice-building mode, in
which the unit runs fully loaded at all
times. In ice-building, the current
setpoint will be set at 120%. For
example, if the front panel or
external current limit setpoint is set
to 80%, in ice-building the active
current limit is 120%.
If, while in ice-building mode, the
unit gets down to the freezestat
setting (water or refrigerant), the unit
will shut down on a manually
resettable diagnostic, just as in
normal operation.
External chilled-water
setpoint: voltage source
2-10 V (dc), or current
source 4-20 mA
Isolated 2-10 V (dc) voltage source
input
Set dipswitch SW1-1 of the option
module A9 to "OFF." Connect the
voltage source to terminals 4 (+) and
5 (-) on option module A9 TB1. CWS
is now based on the following
equation:
CWS °C = (V (dc) * 4.88) - 27.56
Sample values for CWS vs. V (dc)
signals are shown in Table 32
Table 32 - Input values vs. External
chilled-water setpoint
Voltage
(V (dc))
Current
(mA)
3.6
4.6
5.6
6.7
7. 7
7.2
9.2
11.3
13.3
15.4
Resulting
chilled-water
setpoint (°C)
-10
-5
0
5
10
Isolated 4-20 mA current source
input
Set dipswitch SW1-1 of the option
module A9 to "ON."
Connect the current source terminals
4 (+) and 5 (-).
CWS is now based on the following
equation:
Setpoint (°C) = (mA * 2.44) - 27.56
This option allows the external
setting of the chilled-water setpoint
(CWS), independent of the front
panel chilled-water setpoint, by one
of two means:
1 - An isolated voltage input 2-10 V
(dc)
2 - An isolated current loop input
4-20 mA
Note: For Free-Cooling units, this
option will be available only in
Compressor mode.
RTAD-SVX01D-E4
47
Installation - Electrical
External current limit
setpoint: voltage source
2-10 V (dc) or current source
4-20 mA.
This option allows the external
setting of the current limit setpoint
(CLS), independent of the front panel
current-limit setpoint, by one of the
two means:
1 - an isolated voltage input 2-10 V
(dc)
2 - an isolated voltage input 4-20 mA
To enable external current-limit
setpoint operation, external currentlimit setpoint (operator setting
menu) should be set to "E" using the
clear language display.
1- 2-10 V (dc) voltage source input
Set dipswitch SW1-2 of the option
module A9 to "OFF."
Connect the voltage source to
terminals 7 (+) and 8 (-) of the option
module A9. CLS is now based on the
following equation:
CLS % = (V (dc)*10) + 20
Sample values for CLS vs.
V(dc)signals are shown in Table 33.
48
Minimum setpoint: 40% (2.0 V
(dc)input)
Maximum setpoint: 120% (10.0 V
(dc)input)
4-20 mA Current source input
Set dipswitch SW1-2 of the option
module A9 to "ON." Connect the
current source to terminal 7 (+) and
8 (-) of option module A9. CLS is now
based on the following equation:
CLS % = (mA * 5) + 20
Sample values for CLS versus mA
signals are shown in Table 29.
Minimum setpoint = 40% (4.0 mA)
Maximum setpoint = 120% (20.0 mA)
Table 33 - Input values vs. external
current-limit setpoint
Voltage
(V (dc))
Current
(mA)
2.0
3.0
4.0
5.0
6.0
7. 0
8.0
9.0
10.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
18.0
20.0
Resulting
chilled-water
setpoint (°C)
40
50
60
70
80
90
100
110
120
Outdoor air-temperature
sensor
This sensor is used for low ambient
lockout and chilled-water reset by
outdoor air temperature. This sensor
is optional on the RTAD units.
Remove the sensor from its shipping
location in the control panel and
install it in the fresh-air intake on the
north wall of the building. Protect the
sensor from direct sunlight and
shelter it from the elements. Connect
leads to terminals 1 and 2 from
module A9 TB1. All wiring to and
from the remote sensor must be
made with shielded, twisted-pair
conductors.
Be sure to ground the shielding only
at the UCM-CLD. Apply tape to the
sensor end of the shielding to
prevent it from contacting the
surface.
WARNING! To prevent injury or
death, disconnect the electrical
power source before completing
wiring connections to the unit.
Note: Not available for Free-Cooling
units.
RTAD-SVX01D-E4
Installation - Electrical
CAUTION! To prevent overheating at
the terminal connections, use copper
conductors only.
Communication card CSR
This option allows the Clear
Language Display in the control
panel on RTAD units to exchange
information (operating setpoints and
Auto/Standby commands) with a
higher-level control device, such as
Tracer. A shielded, twisted-pair
connection establishes the
bidirectional communications link
between the unit control panel and
the Tracer.
Note: The shielded, twisted-pair
conductors must run in a separate
conduit.
CAUTION! To prevent control
malfunction, do not run low-voltage
wiring (<30V) in conduits with
conductors carrying more than
30 volts.
Field wiring for the communication
link must meet the following
requirements:
1. All wiring must be in accordance
with local codes.
2. Communication link wiring must
be shielded, twisted-pair wiring.
3. The maximum total length for
each communication link is
1,500 meters.
4. The communication link cannot
pass between buildings.
5. All UCM-CLD on the
communication link can be
connected in a "daisy chain"
configuration.
RTAD-SVX01D-E4
Communication-link
connection procedure
1. Refer to the Tracer installation
literature to determine proper
communication-link termination
connections at the Tracer module.
2. Connect the shield of the
communication-link wiring to the
designated shield terminal at the
Tracer module.
3. Connect leads to terminals 1 to 4
of TB2 of the module A9 of the
UCM-CLD to the Tracer. There is no
polarity requirement for the
connection.
4. At the UCM-CLD, the shield should
be cut and taped to prevent any
contact between the shield and
ground.
Note: On multiple-unit installations,
splice the shielding of the twisted
pairs that come into each UCM-CLD
in the "daisy chain" system. Tape the
spliced connections to prevent any
contact between the shield and
ground. At the last Clear Language
Display in the chain, the shield
should be cut and taped off.
5. To get the chiller to communicate
with a Tracer on a multiple-unit
controller, the ICS address under
the "service settings" menu must
be set and the optional A9 module
must be installed. Contact your
local Trane representative for this
matter.
49
Installation - Electrical
LonTalk® Communications
Interface for Chillers (LCI-C)
The unit controller provides an
optional LonTalk Communication
Interface (LCI-C) between the chiller
and a Building Automation System
(BAS). An LCI-C LLID shall be used to
provide "gateway" functionality
between a LonTalk compatible
device and the chiller. The
inputs/outputs include both
mandatory and optional network
variables as established by the
LonMark Functional Chiller Profile
8040.
This section introduces the LCI-C
device for RTAD. For further
information please refer to the
manual ACC-SVN32A-EN.
If you are connecting the LCI-C to a
Tracer Summit™ system, you will
not need the network variable
information given in this part.
If you are connecting the LCI-C to a
non-Trane building automation
system using LonTalk™, Appendixes
A through B will provide you with
the system integration information
you will need regarding network
variables.
LonMark certification
The LonMark organization promotes
LonTalk as an industry standard for
control communication. The LCI-C is
certified to the LonMark Chiller
Functional Profile 8040 Version 1.0,
and follows LonTalk FTT-10A
communications system technology.
Compliance with this technology
means that the LCI-C can provide an
interface for non-Trane LonTalk
networks.
50
Network variables
LonTalk uses network variables to
communicate points on a
communication link. LonMark has
defined a list of standard network
variables.
Chiller Functional Profile
LonMark calls their standard list of
variables for chiller control the
Chiller Functional Profile. This profile
is meant to allow interoperability
between control systems and
chillers, regardless of chiller type or
manufacturer.
The LCI-C Extension
The LCI-C Extension is a list of
additional network variables Trane
created that are over and above the
ones defined by the Chiller
Functional Profile. The LCI-C
Extension is considered "open"
because the network variables are
not proprietary. The network
variables in the LCI-C Extension are
defined in the "User defined types"
section.
LCI-C shipment and inspection
The LCI-C is either factory-installed
with the chiller controller or shipped
as an individual part for field
installation.
Storage
If the LCI-C is stored for a period of
time prior to being installed, it must
be protected from the elements. The
temperature of the storage location
should be between -40 °C and 70 °C
and the relative humidity should be
0-95%, non-condensing.
Communications
The Tracer LCI-C controller
communicates via Trane's LonTalk
protocol. Typically, a communication
link is applied between unit
controllers and a building
automation system. Communication
also is possible via Rover service
tool. Peer-to-peer communication
across controllers is possible even
when a building automation system
is not present.
You do not need to observe polarity
for LonTalk communication links.
The LonTalk communications
protocol allows peer to peer
communications between
controllers, which allows controllers
to share information or data. A
communicated variable input such as
setpoint, space temperature, or
outdoor air temperature has priority
over a locally wired input to the
controller.
Example: if the LCI-C controller has a
wired outdoor air temperature
sensor and Tracer Summit or another
LonTalk controller sends it a
communicated outdoor air
temperature, the communicated
value is used by the LCI-C controller.
If a communicated input value is
lost, the LCI-C controller reverts to
using the locally wired sensor input.
Device Addressing
LonTalk devices are given a unique
address by the manufacturer. This
address is called a Neuron ID. Each
LCI-C controller can be identified by
its unique Neuron ID, which is
printed on a label on the controller.
The Neuron ID is also displayed
when communication is established
using Tracer Summit or Rover service
tool. The Neuron ID format is 00-0164-1C- 2B-00.
RTAD-SVX01D-E4
Installation - Electrical
LonTalk Communication Link Wiring
Requirements
The LonTalk communications link is
for connection to a Building LonTalk
Network. The Communications link
wiring is dependent on the network
architecture. It is recommended that
a System Integrator refer to
"LonWorks FTT-10A Free Topology
Transceiver User's Guide" by the
Echelon Corporation for proper wire
selection.
The physical limits are defined in
Chapter 4, Network Cabling and
Connection. This User's Guide is
available on the Echelon Web page.
A typical wire recommendation is
Belden 85102, single twisted pair,
stranded 19/29, unshielded, 150 C.
For additional wiring information,
refer to Trane's "LonTalk Wiring
Installation guide" (BAS-SVN01AEN.)
Table 34 - Glossary
Comm5
Tranes implementation of the LonTalk protocol.
IPC
Acronym for interprocessor communications.
LonMark International
LonMark International is a global membership organization created to promote and advance the business of
efficient and effective integration of open, multi-vendor control systems utilizing ANSI/EIA/CEA 709.1 (LonTalk)
and related standards.
LonMark Chiller Functional profile
A standard list of network variables, mandatory and optional, that LonMark defines for chiller controller
communications on a LonTalk network.
LonMark communications interface
(LCI)
An interface developed by Trane to allow unit controllers to communicate using LonTalk protocol.
LCI-C Extension software
Trane LCI-C software that implements network variables from both the LonMark Chiller Functional Profile and
Trane Chiller Extension.
LonTalk Protocol
An interoperable protocol developed by the Echelon Corporation and named as a standard by the Electronics
Industries Alliance (EIA-709.1). It is packaged on a Neuron processor that is on the LCI-C LLID.
LonTalk network
A collection of LonTalk devices that communicate and interact with one another.
network variable input (nvi)
A controller's input data item that enables it to exchange data values with other devices on the LonTalk network.
This type of data item can be changed and controlled.
network variable output (nvo)
A controller's output data item that enables it to exchange data values with other devices on the LonTalk network.
This type of data item is for status only.
network variable type
A pre-defined structure for a network variable. A network variable type can be either a standard network variable
type (SNVT) or a user-defined network variable type (UNVT).
Neuron ID
A unique 48-bit digital identifying number assigned by Echelon to every Neuron processor produced. This number
is printed on a label that is attached to the LCI-C. Neuron IDs eliminate the need to set addresses with DIP
switches.
Neuron software
Software within the LCI-C Neuron processor that defines its program ID and network variables.
Program ID
An identifier stored in the LCI-C Neuron processor that identifies the application program that is running. All
controllers with the same Program ID have the same network variable list.
Rover service tool
A Trane software program used as a service tool to configure Trane LonTalk controllers, flash download Neuron
software, make LonTalk bindings between network variables, and otherwise install devices on a LonTalk network.
Rover can also be described as a LonTalk network management tool.
SCPT
Acronym for standard configuration parameter type. A pre-defined structure for communicating configuration
information.
SNVT
Acronym for standard network variable type. See network variable type.
System integration
Generally, the ability for products designed independently to communicate with each other by using the same
communications protocol. Specifically in relation to Trane products, the ability for them to monitor and/or control
another vendors equipment by using an open, standard protocol.
Trane Chiller Extension
The network variables that Trane provides in addition to the network variables provided by the LonMark Chiller
Functional Profile, 8040 Version 1. (Not all network variables in the Trane Chiller Extension are available for every
chiller type.)
UCPT
Acronym for user-defined configuration parameter type. A pre-defined structure for communicating configuration
information.
UNVT
Acronym for user-defined network variable type. See network variable type.
RTAD-SVX01D-E4
51
Installation - Electrical
Table 35 - Network Variable List
Index Network Variable
SNVT Type
Index Network Variable
SNVT Type
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
SNVT_str_asc(36)
SNVT_switch(95)
SNVT_time_sec(107)
SNVT_time_sec(107)
SNVT_lev_percent(81)
SNVT_temp_p(105)
SNVT_hvac_mode(108)
SNVT_temp_p(105)
SNVT_switch(95)
SCPTmaxRcvTime(48)
UCPT_refrig_type
UCPT_manufacturing_location
UCPT_chiller_type
SCPTdevMajVer(165)
SCPTdevMinVer(166)
SNVT_switch(95)
SNVT_temp_p(105)
SNVT_switch(95)
SNVT_temp_p(105)
SNVT_lev_percent(81)
SNVT_hvac_mode(108)
SNVT_temp_p(105)
SNVT_lev_percent(81)
SNVT_lev_percent(81)
SNVT_temp_p(105)
SNVT_temp_p(105)
SNVT_temp_p(105)
SNVT_temp_p(105)
SNVT_str_asc(36)
SNVT_chlr_status(127)
SNVT_obj_request(92)
SNVT_obj_status(93)
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
UNVT
UNVT
SNVT_state(83)
SNVT_state(83)
SNVT_state(83)
SNVT_switch(95)
SNVT_switch(95)
SNVT_switch(95)
SNVT_switch(95)
SNVT_temp_p(105)
UNVT_3phase_volt
SNVT_press_f(59)
SNVT_press_f(59)
SNVT_temp_p(105)
SNVT_temp_p(105)
SNVT_press_f(59)
SNVT_press_f(59)
SNVT_temp_p(105)
SNVT_temp_p(105)
SNVT_lev_percent(81)
SNVT_lev_percent(81)
SNVT_temp_p(105)
SNVT_temp_p(105)
SNVT_temp_p(105)
SNVT_temp_p(105)
UNVT_3phase_current
UNVT_3phase_current
UNVT_3phase_current
UNVT_3phase_current
UNVT_starts_runtime
UNVT_starts_runtime
UNVT_starts_runtime
UNVT_starts_runtime
52
nciLocation
nciChillerEnable
nciMinOutTm
nciSndHrtBt
nciCapacityLim
nciCoolSetpt
nciMode
nciHeatSetpt
nciDefaults
nciRcvHrtBt
nciRefrigerant
nciMfgLocation
nciChillerType
nciDevMajVer
nciDevMinVer
nviChillerEnable
nviCoolSetpt
nvoOnOff
nvoActiveSetpt
nviCapacityLim
nviMode
nviHeatSetpt
nvoActualCap
nvoCapacityLim
nvoLvgChWTemp
nvoEntChWTemp
nvoEntCndWTemp
nvoLvgCndWTemp
nvoAlarmDescr
nvoChillerStat
nviRequest
nvoStatus
nviTraneVar2
nvoTraneVar9
nvoStatusOutputs
nvoCprsrsRunning
nvoCondFans
nvoEvapWtrPump
nvoEvapWtrFlow
nvoCondWtrPump
nvoCondWtrFlow
nvoOutdoorTemp
nvoUnitVoltage
nvoEvapRfgtPrsC1
nvoEvapRfgtPrsC2
nvoEvapRfgtTmpC1
nvoEvapRfgtTmpC2
nvoCondRfgtPrsC1
nvoCondRfgtPrsC2
nvoCondRfgtTmpC1
nvoCondRfgtTmpC2
nvoAirFlowPctC1
nvoAirFlowPctC2
nvoOilTempA
nvoOilTempB
nvoOilTempC
nvoOilTempD
nvoCurrentA
nvoCurrentB
nvoCurrentC
nvoCurrentD
nvoStartsRunTmA
nvoStartsRunTmB
nvoStartsRunTmC
nvoStartsRunTmD
RTAD-SVX01D-E4
Installation - Electrical
User defined types
This appendix includes
❏ User-defined network variable
types
❏ User-defined configuration
property types
These user-defined types have been
created by Trane for use by Trane
controllers.
In many cases, the Trane user-defined
types contain standard network
variable types (SNVTs) to make them
easy to understand.
User-defined network variable types
(UNVTs)
UNVT_purge_information
Structure definition
Field in structure
SNVT_state
Byte
Byte 0 (MSB)
SNVT_time_f
Byte 1-2 (LSB)
Bit definition
Bits 0-7 (MSB)
Bit 8
Bit 9
Bit 10
Bits 11-15(LSB)
Description
Validity of bits 8-15 (1=Valid)
Refrigeration Circuit On (1)
Pumping Out (1)
Regenerating (1)
Not Used
Purge 24 Hour
Pumpout Average
UNVT_starts_runtime
Structure definition
Field in structure
SNVT_count_f
SNVT_time_f
Definition
Compressor Starts
Compressor Run Time
SUNVT_3phase_current
Structure definition
Field in structure
SNVT_amp_ac
SNVT_amp_ac
SNVT_amp_ac
SNVT_lev_percent
SNVT_lev_percent
SNVT_lev_percent
Definition
L1 Current (Amps)
L2 Current (Amps)
L3 Current (Amps)
L1 Current (%RLA)
L2 Current (%RLA)
L3 Current (%RLA)
UNVT_3phase_volt
Structure definition
Field in structure
SNVT_volt_ac
SNVT_volt_ac
SNVT_volt_ac
RTAD-SVX01D-E4
Definition
AB Voltage
BC Voltage
CA Voltage
53
Installation - Electrical
UNVT_refrig
Range of enumeration values
Enumeration
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44-254
0xFF
54
Definition
RT_R11
RT_R12
RT_R13
RT_R13B1
RT_R14
RT_R21
RT_R22
RT_R23
RT_R32
RT_R40
RT_R112
RT_R113
RT_R114
RT_R115
RT_R116
RT_R123
RT_R124
RT_R125
RT_R134a
RT_R141B
RT_R142B
RT_R143A
RT_R152A
RT_R401A
Description (reference: ARI guideline K)
R-11 (Trichlorofluoromethane)
R-12 (Dichlorodifluoromethane)
R-13 (Chlorotrifluoromethane)
R-13B1 (Bromotrifluoromethane)
R-14
R-21
R-22 (Chlorodifluoromethane)
R-23 (Trifluoromethane)
R-32
R-40
R-112
R-113 (Trichlorotrifluoroethane)
R-114 (Dichlorotetrafluoroethane)
R-115
R-116
R-123 (Dichlorotrifluoroethane)
R-124 (Chlorotetrafluoroethane)
R-125
R-134a (Tetrafluoroethane)
R-141B
R-142B
R-143A
R-152A
R-401A (Chlorodifluoromethane, Difluoroethane,
Chlorotetrafluoroethane)
RT_R401B
R-401B (Chlorodifluoromethane, Difluoroethane,
Chlorotetrafluoroethane)
RT_R402A
R-402A (Chlorodifluoromethane, Pentafluoro-ethane, Propane)
RT_R402B
R-402B (Chlorodifluoromethane, Pentafluoro-ethane, Propane)
RT_R403B
R-403B (Chlorodifluoromethane, Octafluoro-propane, Propane)
RT_R404A
R-404A (Pentafluoroethane, Trifluoroethane, Tetrafluoroethane)
RT_R406A
R-406A (Chlorodifluoroethane, Isobutane, Chlorodifluoroethane)
RT_R407A
R-407A (Difluoromethane, Pentafluoroethane, Tetrafluoroethane)
RT_R407B
R-407B (Difluoromethane, Pentafluoroethane, Tetrafluoroethane)
RT_R407C
R-407C (Difluoromethane, Pentafluoroethane, Tetrafluoroethane)
RT_R408A
R-408A (Chlorodifluoromethane, Trifluoroethane,
Pentafluoroethane)
RT_R409A
R-409A (Chlorodifluoromethane, Chlorotetrafluo-roethane,
Chlorodifluoroethane)
RT_R410A
R-410A (Difluoromethane, Pentafluoroethane)
RT_R414B
R-414B (Chlorodifluoromethane, Chlorotetrafluo-roethane,
Chlorodifluoroethane, Isobutane)
RT_R416A
R-416A (Tetrafluoroethane, Chlorotetrafluore-thane, Butane)
RT_R500
R-500 (Dichlorodifluoromethane, Difluoroethane)
RT_R502
R-502 (Chlorodifluoromethane, Chloropentafluo-roethane)
RT_R503
R-503 (Chlorotrifluoromethane, Trifluoromethane)
RT_R507
R-507 (Pentafluoroethane, Trifluoroethane)
RT_R508B
R-508B (Trifluoromethane, Hexafluoroethane)
RT_R717
R-717
RT_RESERVED Reserved for future use
RT_INVALID
Invalid (default)
RTAD-SVX01D-E4
Installation - Electrical
User-defined configuration property types
UCPT_chiller_type
Structure definition
Item
Model information (See enumeration
definitions table below.)
Unit capacity
Cooling type
Type
Unsigned 8-bit (enum)
Bytes
1
SNVT_power_f
Unsigned 8-bit (enum)
4
1
Number of circuits
Unsigned 8-bit
1
Number of compressors on circuit 1
Unsigned 8-bit
1
Number of compressors on circuit 2
Unsigned 8-bit
1
Total length
Range and meaning
Range of enum values in
UCPT_chiller_type
Capacity of unit (in watts)
0 = water-cooled 1 = aircooled 2-254 = unused
0-2; number of circuits on
unit
0-3; number of
compressors on circuit 1
0-3; number of
compressors on circuit 2
9
Enumeration definitions for UCPT_chiller_type
Enumeration
0
1
2
3
4
5
6
7
8
9
10
11
12-254
255
um n (Trane chiller model
designators)
RTA
CVH
CVG
CVR
CDH
RTH
CGW
CGA
CCA
RTW
RTX
RTU
Unused
Invalid (unknown)
UCPT_manufacturing_location
Range of enumeration values
Enumeration
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15 to 254
255
RTAD-SVX01D-E4
Enumeration definition
Field applied (unknown
location)
La Crosse, Wisconsin
Pueblo, Colorado
Charmes, France
Rushville, Indiana
Macon, Georgia
Waco, Texas
Lexington, Kentucky
Forsyth, Georgia
Clarksville, Tennessee
Ft. Smith, Arkansas
Penang, China
Colchester, UK
Curitiba, Brazil
Taicang, China
Unused
Invalid (unknown location)
55
Operating Principles
Figure 18 - System/Oil system schematic for Standard
cooling /Partial Heat Recovery units
1 = Screw compressor
2 = Evaporator
3 = Air-cooled condenser
4 = Evaporator water inlet connection
5 = Evaporator water outlet connection
6 = Oil service valve
7 = Oil separator
8 = Discharge service valve
9 = Liquid shutoff valve
10 = Filter drier
11 = Electric expansion valve
12 = Relief valve
13 = Service valve
PI = Gauge
PT = Pressure transducer
PSH = High pressure relief valve
PSL = Low pressure relief valve
56
PZH = High pressure switch
PZL = Low pressure switch
TT = Temperature sensor
TCE = Electric expansion valve
OPT = Option
DL = Discharge line
SL = Suction line
LL = Liquid line
A = Circuit A
B = Circuit B
LA only = Low or wide ambient
temperature only
FSL = Flow switch
(supplied by Trane - option)
PHR = Partial Heat Recovery option
CW = Chilled water
WW = Warm water
RTAD-SVX01D-E4
Operating Principles
Figure 19 - System schematic for Free-Cooling units
B
A
LA only
DL
OL
OL
OL
LL
OL
DL
DL
LL
LL
1 = Screw compressor
2 = Evaporator
3 = Air-cooled condenser
4 = Evaporator water inlet connection
5 = Evaporator water outlet connection
6 = Oil service valve
7 = Oil separator
8 = Discharge service valve
9 = Liquid shutoff valve
10 = Filter drier
11 = Electric expansion valve
12 = Relief valve
13 = Service valve
14 = 3-way valve
PI = Gauge
PT = Pressure transducer
PSH = High pressure relief valve
PSL = Low pressure relief valve
RTAD-SVX01D-E4
LA only
DL
SL
PZH = High pressure switch
PZL = Low pressure switch
TT = Temperature sensor
TCE = Electric expansion valve
OPT = Option
DL = Discharge line
SL = Suction line
LL = Liquid line
A = Circuit A
B = Circuit B
LA only = Low or wide ambient
temperature only
FSL = Flow switch
57
Operating Principles
Figure 20 - System schematic for Total Heat Recovery units
LL
1 = Screw compressor
2 = Evaporator
3 = Air-cooled condenser
4 = Evaporator water inlet connection
5 = Evaporator water outlet connection
6 = Oil service valve
7 = Oil separator
8 = Discharge service valve
9 = Liquid shutoff valve
10 = Filter drier
11 = Electric expansion valve
12 = Relief valve
13 = Service valve
14 = 3-way valve
PI = Gauge
PT = Pressure transducer
58
PSH = High pressure relief valve
PSL = Low pressure relief valve
PZH = High pressure switch
PZL = Low pressure switch
TT = Temperature sensor
TCE = Electric expansion valve
OPT = Option
DL = Discharge line
SL = Suction line
LL = Liquid line
RL = Auxiliary oil cooler refrigerant line
A = Circuit A
B = Circuit B
LA only = Low or wide ambient
temperature only
FSL = Flow switch
RTAD-SVX01D-E4
Pre-Start Checkout
Installation Checklist
Unit Piping
Electrical Wiring
Complete this checklist as the unit is
installed and verify that all
recommended procedures are
accomplished before the unit is
started. This checklist does not
replace the detailed Instructions
given in the "Installation Mechanical" and "Installation Electrical" sections of this manual.
Read both sections completely, to
become familiar with the installation
procedures, prior to beginning the
work.
❏ Flush all unit water piping before
making final connections to the
unit.
CAUTION! If using an acidic
commercial flushing solution,
construct a temporary bypass
around the unit to prevent damage
to internal components of the
evaporator. To avoid possible
equipment damage, do not use
untreated or improperly treated
system water.
❏ Connect the chilled water piping to
the evaporator.
Note: On Free-Cooling units, the
chilled water piping will be
connected to the evaporator on one
side and to the 3-way valve on the
other side (see Figure 19)
❏ Install pressure gauges and shutoff
valves on the chilled water inlet
and outlet to the evaporator.
❏ Install a water strainer in the
entering chilled water line.
❏ Install a balancing valve and flow
switch (recommended) in the
leaving chilled water line.
❏ Install a drain with shutoff valve or
a drain plug on the evaporator
waterbox.
❏ Vent the chilled water system at
high points in the system piping.
❏ Apply heat tape and insulation, as
necessary, to protect all exposed
piping from freeze-up.
WARNING! To prevent injury or
death, disconnect electrical power
source before completing wiring
connections to the unit.
CAUTION! To avoid corrosion and
overheating at terminal connections,
use copper conductors only.
❏ Connect the unit power supply
wiring with fused-disconnect to
the terminal block or lugs (or unitmounted disconnect) in the power
section of the control panel.
❏ Connect power supply wiring to
the evaporator heater.
❏ Connect power supply wiring to
the chilled water pump.
❏ Connect power supply wiring to
any auxiliary heat tapes.
❏ Connect the auxiliary contact of
the chilled water pump (6K51) in
series with the flow switch, if
installed, and then connect to the
proper terminals.
❏ For the External Auto/Stop
function, install wiring from
remote contact (6S1) to the proper
terminals on the circuit board.
Note: On Free-Cooling units, for free
cooling enable output, install wiring
from remote contact (6S3) to the
proper terminals on the circuit
board.
CAUTION! Information in
Interconnecting Wiring: Chilled Water
Pump Interlock and External
Auto/Stop must be adhered to or
equipment damage may occur.
Receiving
❏ Verify that the unit nameplate data
corresponds to the ordering
information.
❏ Inspect the unit for shipping
damage and any shortages of
materials. Report any damage or
shortage to the carrier.
Unit Location and
Mounting
❏ Inspect the location desired for
installation and verify adequate
service access clearances.
❏ Provide drainage for evaporator
water.
❏ Remove and discard all shipping
materials (cartons, etc.)
❏ Install optional rubber isolators, if
required.
❏ Level the unit and secure it to the
mounting surface.
RTAD-SVX01D-E4
PHR/THR units
❏ Ensure that the heat recovery
water piping is ready to operate,
filled with water and air purged.
❏ Ensure that a water strainer is
installed.
❏ Check the position of
thermometers and manometers.
Heat Recovery units
❏ Ensure that the Heat Recovery
mode input is correctly wired (dry
contact)
❏ Check that the hot water pump has
a 3 minute time delay after the
Heat Recovery mode is switched
off.
59
Pre-Start Checkout
❏ If alarm and status relay outputs
are used, install leads from the
panel to the proper terminals on
circuit board.
❏ If the emergency stop function is
used, install low voltage leads to
terminals on circuit board.
❏ Connect separate power for the
External Emergency Stop option, if
applicable.
❏ If the ice making-option is used,
install leads on terminals TB1-1
and 2 on module A9.
General
When installation is complete, but
prior to putting the unit into service,
the following pre-start
procedures must be reviewed and
verified correct:
WARNING! Disconnect all electric
power including remote disconnects
before servicing. Failure to
disconnect power before servicing
can cause severe personal injury or
death.
1 Inspect all wiring connections in
the compressor power circuits
(disconnects, terminal block,
contactors, compressor junction
box terminals, etc.). to be sure they
are clean and tight.
CAUTION! Verify all connections are
made. Loose connections can cause
overheating and undervoltage
conditions at the compressor motor.
2 Open all refrigerant valves in the
discharge, liquid, oil and oil return
lines.
CAUTION! Do not operate the unit
with the compressor, oil discharge,
liquid line service valves and the
manual shutoff on the refrigerant
supply to the coolers "CLOSED".
Failure to have these "OPEN" may
cause serious compressor damage.
60
3 Check the power supply voltage to
the unit at the main power fuseddisconnect switch. Voltage must be
within the voltage utilization range
and also stamped on the unit
nameplate. Voltage imbalance
must not exceed 3%.
4 Check the unit power phasing L1L2-L3 in the starter to be sure that
it has been installed in an "ABC"
phase sequence.
CAUTION! Improper power phasing
can result in equipment damage due
to reverse rotation.
CAUTION! Do not use untreated or
improperly treated water.
Equipment damage may occur.
5 Fill the evaporator chilled water
circuit. Vent the system while it is
being filled. Open the vents on the
top of the evaporator shell while
filling and close when filling is
completed.
Important: The use of improperly
treated or untreated water in this
equipment may result in scaling,
erosion, corrosion, algae or slime.
The services of a qualified water
treatment specialist should be
engaged to determine what
treatment, if any, is advisable. Trane
warranty specifically excludes
liability of corrosion, erosion or
deterioration of Trane equipment.
Trane assumes no responsibilities for
the results of the use of untreated or
improperly treated water or saline or
brackish water.
6 Close the fused-disconnect
switch(es) that supplies power to
the chilled water pump starter.
7 Start the chilled water pump to
begin circulation of the water.
Inspect all piping for leakage and
make any necessary repairs.
8 With water circulating through the
system, adjust water flow and
check water pressure drop through
the evaporator.
9 Adjust the chilled water flow switch
for proper operation.
WARNING! Use extreme caution
when performing the following
procedure with power applied.
Failure to do so can result in
personal injury or death.
10 Reapply power to complete
procedures.
11 Prove all Interlock and
Interconnecting Wiring Interlock
and External as described in the
Electrical Installation section.
12 Check and set, as required, all
UCM-CLD menu items.
Note: On Total Heat Recovery and
Free-Cooling units, also check and
set the A70 module.
13 Stop the chilled water pump.
14 Energize compressor and oil
separators 24 hours prior to unit
start-up.
RTAD-SVX01D-E4
Pre-Start Checkout
Unit Voltage Power Supply
Voltage to the unit must meet the
criteria given in the InstallationElectrical Section. Measure each leg
of the supply voltage at the unit's
main power fused- disconnect. If the
measured voltage on any leg is not
within specified range, notify the
supplier of the power and correct the
situation before operating the unit.
CAUTION! Provide adequate voltage
to the unit. Failure to do so can
cause control components to
malfunction and shorten the life of
relay contact, compressor motors
and contactors.
CAUTION! Power supply with TT or
TN earthing arrangement is not
compatible with IT (Insulated
Neutral) earthing arrangement.
Unit Voltage Imbalance
Excessive voltage imbalance
between the phases of three-phase
system can cause motors to
overheat and eventually fail. The
maximum allowable imbalance is
3 percent. Voltage imbalance is
determined using the following
calculations:
% Imbalance = [(Vx - V ave) x
100]/Vave
V ave = (V1 + V2 + V3)/3
Vx = phase with the greatest
difference from V ave (without
regard to the sign)
For example, if the three measured
voltages are 221, 230, and 227 volts,
the average would be:
(221+230+227)/3 = 226
The percentage of the imbalance is
then:
[100 * (221-226)] / 226 = 2.2%
This exceeds the maximum
allowable (2%) by 0.2 percent.
RTAD-SVX01D-E4
Unit Voltage Phasing
WARNING! It is imperative that L1,
L2, L3 in the starter be connected in
the A-B-C phase sequence to prevent
equipment damage due to reverse
rotation.
It is important that proper rotation of
the compressors be established
before the unit is started.
Proper motor rotation requires
confirmation of the electrical phase
sequence of the power supply. The
motor is internally connected for
clockwise rotation with the incoming
power supply phased A, B, C.
Basically, voltages generated in each
phase of a polyphase alternator or
circuit are called phase voltages. In
a three-phase circuit, three sine wave
voltages are generated, differing in
phase by 120 electrical degrees. The
order in which the three voltages of a
three-phase system succeed one
another is called phase sequence or
phase rotation. This is determined by
the direction of rotation of the
alternator. When rotation is
clockwise, phase sequence is usually
called "ABC," when counterclockwise, "CBA."
This direction may be reversed
outside the alternator by
interchanging any two of the line
wires. It is this possible interchange
of wiring that makes a phase
sequence indicator necessary if the
operator is to quickly determine the
phase rotation of the motor.
61
Pre-Start Checkout
Proper compressor motor electrical
phasing can be quickly determined
and corrected before starting the
unit. Use a quality instrument, such
as the Associated Research Model 45
Phase Sequence Indicator, and
follow this procedure.
1 Press the STOP key on the UCMCLD.
2 Open the electrical disconnect or
circuit protection switch that
provides line power to the line
power terminal block(s) in the
starter panel (or to the unitmounted disconnect).
3 Connect the phase sequence
indicator leads to the line Power
terminal block, as follows:
Phase Sequence Lead
Terminal
Black (Phase A)
L1
Red (Phase B)
L2
Yellow (Phase C)
L3
4 Turn power on by closing the unit
supply power fused-disconnect
switch.
5 Read the phase sequence on the
indicator. The "ABC" LED on the
face of the phase indicator will
glow if phase is "ABC."
WARNING! To prevent injury or
death due to electrocution, take
extreme care when performing
service procedures with electrical
power energized.
6 If the "CBA" indicator glows
instead, open the unit main power
disconnect and switch two line
leads on the line power terminal
block(s) (or the unit mounted
disconnect). Reclose the main
power disconnect and recheck the
phasing.
CAUTION! Do not interchange any
load leads that are from the unit
contactors or the motor terminals.
Doing so may damage the
equipment.
7 Reopen the unit disconnect and
disconnect the phase indicator.
62
Water System Flow Rates
Establish a balanced chilled water
flow through the evaporator. The
flow rates should fall between the
minimum and maximum values
given on the pressure drop curves.
Chilled water flow rates below the
minimum values will result in
laminar flow, which reduces heat
transfer and causes either loss of
EXV control or repeated nuisance,
low temperature, cutouts. Flow rates
that are too high can cause tube
damage in the evaporator.
Water System Pressure
Drop
Measure water pressure drop
through the evaporator at the fieldinstalled pressure taps on the system
water piping. Use the same gauge
for each measurement. Do not
include valves, strainers fittings in
the pressure drop readings.
Pressure drop readings should be
approximately those shown in the
pressure drop charts in the
Installation - Mechanical section.
RTAD-SVX01D-E4
Unit Start-up Procedures
Daily Unit Start-Up
The time line for sequence of
operation is shown at the end of this
section and depicts the nominal
delays and sequences that a chiller
would experience during a typical
operational cycle. The time line
begins with a power up of the main
power to the chiller. The sequence
assumes a RTAD chiller with no
diagnostics or malfunctioning
components. External events such as
the operator placing the chiller in
Auto or Stop, chilled water flow
through the evaporator, and
application of load to the chilled
water loop causing loop water
temperature increases are depicted
and the chillers responses to those
events are shown, with appropriate
delays noted. The effects of
diagnostics, and other external
interlocks other than evaporator
water flow proving, are not
considered. The response of the CLD
Display is also depicted on the time
line.
RTAD-SVX01D-E4
For Free Cooling units only:
At power up, the unit will choose
either if it should start in FreeCooling mode or in Compressor
mode through the CarelTM module:
• If only Free-Cooling is available,
then Free-Cooling mode will be
entered immediately at this time.
• If only Compressor mode is
available, then Compressor mode
will be entered immediately at this
time.
• If both modes are available, then
the mode to enter will depend on a
few conditions. If ( (Leaving Water
Temperature) - (Active Chilled
Water Setpoint) > 2 * (Dead band) ),
or if Free-Cooling coil cannot
generate more than 5% of its delta T
at current conditions, then the
Compressor mode will be entered
immediately. If these conditions are
false for at least 15 minutes, then
the Free-Cooling mode will be
entered immediately.
To allow the system to operate even
in case of failure on chiller or on free
cooling side, a menu allows the
service technician to choose between
the following modes:
❏ Auto mode:This is the default
mode. If enable by external FreeCooling Enable input (FCE), the
software will choose between FreeCooling mode or Compressor
mode. If disable by FCE, the
Compressor mode will always be
enabled. In auto mode the RTAD
Free-Cooling unit will always startup in Compressor mode and then
if conditions to pass in FreeCooling mode are verified for at
least 15 minutes, the Free-Cooling
mode will be enabled.
❏ Compressor mode only:
Compressor mode will always be
enabled.
❏ Free-cooling mode only: FreeCooling will always be enabled.
This will allow service on
compressor side of the unit.
WARNING! This menu will enable
function made by the software, but
service technician must remove all
power supply before servicing parts,
especially on moving dangerous
devices.
63
Unit Start-up Procedures
General
If the pre-start checkout, as discussed
above, has been completed, the unit
is ready to start.
1 Press the STOP key on the CLD
module.
2 As necessary, adjust the setpoint
values in the UCM-CLD « Operator
Settings » menu.
3 Close the fused-disconnect switch
for the chilled water pump.
Energize the pump(s) to start water
circulation.
4 Check the service valves on the
discharge line, oil line and liquid
line for each circuit. These valves
must be open (backseated) before
starting the compressors.
64
CAUTION! To prevent compressor
damage, do not operate the unit
until all refrigerant and oil line
service valves are opened.
5 Verify that the chilled water pump
runs for at least one minute after
the chiller is commanded to stop
(for normal chilled water systems).
6 Press the AUTO key. If the chiller
control calls for cooling and all
safety interlocks are closed, the
unit will start. The compressor(s)
will load and unload in response to
the leaving chilled water
temperature.
Once the system has been operating
for approximately 30 minutes and
has become stabilized, complete the
remaining start-up procedures, as
follows:
1 Check the evaporator refrigerant
pressure and the condenser
refrigerant pressure under
Refrigerant Report on the CLD
Module. The pressures are
referenced to sea level (1013 mbar 14.7 psia).
2 Measure the system discharge
superheat.
3 Measure the system subcooling.
4 A shortage of refrigerant is
indicated if operating pressures are
low and subcooling is also low. If
the operating pressures, sight
glass, superheat and subcooling
readings indicate a refrigerant
shortage, gas-charge refrigerant
into each circuit, as required. With
the unit running, add refrigerant
vapor by connecting the charging
line to the suction charging service
valve port until operating
conditions become normal.
CAUTION! If both suction and
discharge pressures are low but
subcooling is normal, a problem
other than refrigerant shortage
exists. Do not add refrigerant, as this
may result in overcharging the
circuit. Use only refrigerants
specified on the unit nameplate (HFC
134a) and Trane Oil 00048. Failure to
do so may cause compressor
damage and improper unit
operation.
Note: On Free-Cooling units, in
Compressor mode, the procedure
will remain the same. In Free
Cooling mode, only point 1 needs to
be checked, as the compressors are
not running. To release more cooling
capacity and reduce pressure drop,
Trane recommends using 50%
nominal water flow while in Free
Cooling mode.
RTAD-SVX01D-E4
Unit Start-up Procedures
RTAD-SVX01D-E4
Seasonal Unit Start-Up
Procedure
System Restart After
Extended Shutdown
1 Close all valves and re-install the
drain plugs in the evaporator.
2 Service the auxiliary equipment
according to the startup/maintenance instructions
provided by the respective
equipment manufacturers.
3 Close the vents in the evaporator
chilled water circuits.
4 Open all the valves in the
evaporator chilled water circuits.
5 Open all refrigerant valves to verify
they are in the open condition.
6 If the evaporator was previously
drained, vent and fill the
evaporator and chilled water
circuit. When all air is removed
from the system , re-install the vent
plugs on top of the evaporator
shell.
CAUTION! Ensure that the
compressor and oil separator
heaters have been operating for a
minimum of 24 hours before
starting. Failure to do so may result
in equipment damage.
7 Check the adjustment and
operation of each safety and
operating control.
8 Close all disconnect switches.
9 Refer to the sequence for daily unit
startup for the remainder of the
seasonal startup.
Follow the procedures below to
restart the unit after extended
shutdown:
1 Verify that the liquid line service
valves, oil line, compressor
discharge service valves (when
supplied) are open (backseated).
CAUTION! To prevent damage to the
compressor, be sure that all
refrigerant valves are open before
starting the unit.
2 Check the oil separator oil level
(see Maintenance Procedures
section).
3 Fill the evaporator water circuit.
Vent the system while it is being
filled. Open the vent on the top of
the evaporator while filling and
close when filling is completed.
CAUTION! Do not used untreated or
improperly treated water.
Equipment damage may occur.
4 Close the fused-disconnect
switches that provides power to
the chilled water pump.
5 Start the evaporator water pump
and, while water is circulating,
inspect all piping for leakage. Make
any necessary repairs before
starting the unit.
6 While the water is circulating,
adjust the water flows and check
the water pressure drops through
the evaporator. Refer to "Water
System Flow Rates" and "Water
System Pressure Drop".
7 Adjust the flow switch on the
evaporator piping for proper
operation.
8 Stop the water pump. The unit is
now ready for start-up as described
in "Start-Up Procedures".
65
Unit Shutdown Procedures
66
Temporary Shutdown And
Restart
Extended Shutdown
Procedure
To shut the unit down for a short
time, use the following procedure:
1 Press the STOP key on the UCMCLD. The compressors will
continue to operate and, after
unloading for 20 seconds, will stop
when the compressor contactors
de-energize.
Note: On Free-Cooling units in Free
Cooling mode, only the fans will
stop. In Compressor mode, there is
no change.
2 Stop the water circulation by
turning off the chilled water pump.
To restart the unit after a temporary
shutdown, enable the chilled water
pump and press the AUTO key. The
unit will start normally, provided
the following conditions exist:
❏ The control module receives a call
for cooling and the differential-tostart is above the setpoint.
❏ All system operating interlocks
and safety circuits are satisfied.
The following procedure is to be
followed if the system is to be taken
out of service for an
extended period of time, e.g.
seasonal shutdown:
1 Test the unit for refrigerant leaks
and repair as necessary.
2 Open the electrical disconnect
switches for the chilled water
pump. Lock the switches in the
"OPEN" position.
CAUTION! Lock the chilled water
pump disconnect Switch in the
"OPEN" position, to prevent pump
damage.
3 Close all chilled water supply
valves. Drain the water from the
evaporator.
4 Open the unit main electrical
disconnect and unit-mounted
disconnect (if installed) and lock on
the "OPEN" position.
CAUTION! Lock the disconnects in
the "OPEN" position to prevent
accidental start-up and damage to
the system when it has been setup
for extended shutdown.
5 At least every three months
(quarterly), check the refrigerant
pressure in the unit to verify that
the refrigerant charge is intact.
Note: For Free-Cooling units, check
the percentage of ethylene glycol in
the water circuit in order to protect
against freeze-up.
RTAD-SVX01D-E4
Maintenance
General
Weekly Maintenance
Annual Maintenance
Perform all maintenance procedures
and inspections at the recommended
intervals. This will prolong the life of
the chiller and minimize the
possibility of costly failures. Record
an operating history for the unit,
which will serve as a valuable
diagnostic tool for service personnel.
By observing trends in operating
conditions, an operator can
anticipate and prevent problem
situations before they occur. After
the unit has been operating for
approximately 30 minutes and the
system has stabilized, check the
operating conditions and complete
the procedures below:
While unit is running in stable
conditions.
1 Check UCM-CLD pressure for
Evaporator, Condenser and Oil.
2 The subcooling should never be
less than 3°C (5.4°F) under any
circumstances.
CAUTION! A clear sightglass alone
does not mean that the system is
properly charged. Also check rest of
system operating conditions.
3 Inspect the entire system for
unusual conditions and inspect the
condenser coils for dirt and debris.
If the coils are dirty, refer to coil
cleaning.
Note: On Free-Cooling units, the Free
Cooling coil has to be checked too.
1 Perform all weekly and monthly
procedures.
2 Check oil sump oil level while unit
is off.
Note: Routine changing of the oil is
not required. Use an oil analysis to
determine the condition of the oil.
3 Have a qualified laboratory
perform a compressor oil analysis
to determine system moisture
content and acid level. This
analysis is a valuable diagnostic
tool.
4 Contact a qualified service
organization to leak test the chiller,
to check operating and safety
controls, and to inspect electrical
components for deficiencies.
5 Inspect all piping components for
leakage and damage. Clean out
any inline strainers.
6 Clean and repaint any areas that
show signs of corrosion.
7 Clean the condenser coils.
WARNING! Position all electrical
disconnects in the "Open" position
and lock them to prevent injury or
death due to electrical shock.
Note: On Free-Cooling units, the Free
Cooling coil has to be checked too.
8 Check and tighten all electrical
connections as necessary.
Monthly Maintenance
1 Perform all weekly maintenance
procedures.
2 Record the system subcooling.
3 Record the system superheat.
4 Make any repairs necessary.
RTAD-SVX01D-E4
67
Maintenance Procedures
All the air-cooled RTAD chillers are
given a complete functional test at
the factory covering sensors, wiring,
electrical components,
microprocessor function,
communication capability, expansion
valve performance and fans. Where
applicable, each unit is factory preset
to the customer's design conditions,
including leaving water temperature
setpoint, current limit, and reset
temperature setpoint.
Note: Free-Cooling units are freezeprotected with 30% ethylene glycol
in the cooling loop circuit which is
the most convenient percentage to
protect the unit against freeze-up.
Protection coverage with 30%
ethylene glycol:
- freezing point without burst effect =
-13°C
- freezing point with burst effect =
- 50°C
It is necessary to regularly check the
percentage of ethylene glycol in the
water circuit (at least every three
months).
68
Refrigerant Emission
Control
Conservation and emission
reduction can be accomplished by
following recommended Trane
operation, maintenance and service
procedures, with specific attention to
the following:
1 Refrigerant used in any type of air
conditioning or refrigerating
equipment should be recovered for
reuse, recovered and/or recycled
for reuse, or reprocessed
(reclaimed). Never release
refrigerant into the atmosphere.
2 Always determine possible recycle
or reclaim requirements of the
recovered refrigerant before
beginning recovery by any method.
3 Use approved containment vessels
and safety standards. Comply with
all applicable transportation
standards when shipping
refrigerant containers.
4 To minimize emissions while
recovering refrigerant, use
recycling equipment. Always
attempt to use methods which will
pull the lowest possible vacuum
while recovering and condensing
refrigerant into containment.
5 Refrigeration-system cleanup
methods that use filters and dryers
are preferred. Do not use solvents
that have ozone depletion factors.
Properly dispose of used materials.
6 Take extra care to properly
maintain all service equipment that
directly supports refrigeration
service work, such as gauges,
hoses, vacuum pumps and
recycling equipment.
7 Stay aware of unit enhancements,
conversion refrigerants,
compatible parts and
manufacturer's recommendations
which will reduce refrigerant
emissions and increase equipment
operating efficiencies. Follow
manufacturer's specific guidelines
for conversion of existing systems.
8 In order to assist in reducing
power-generation emissions,
always attempt to improve
equipment performance with
improved maintenance and
operations that will help conserve
energy resources.
RTAD-SVX01D-E4
Maintenance Procedures
Refrigerant and Oil Charge
Management
Proper oil and refrigerant charge is
essential for proper unit operation,
unit performance, and
environmental protection. Only
trained and licensed service personal
should service the chiller.
Some symptoms of a refrigerant
under charged unit:
- Low Subcooling
- Larger than normal evaporator
approach temperatures (Leaving
Water Temperature Saturated Evaporator Temperature)
- Low Evaporator Refrigerant
Temperature Limit
- Low Refrigerant Temperature
Cutout diagnostic
- Fully open expansion valve
- Possible whistling sound coming
from liquid line (due to high vapor
velocity)
- Possible low discharge superheat at
high loads
- High Condenser + Subcooler
Pressure drop
RTAD-SVX01D-E4
Some symptoms of a refrigerant
over charged unit:
- High Subcooling
- Larger than normal condenser
approach temperatures (Entering
Condenser Saturated Temperature Entering Air Temperature)
- Condenser Pressure Limit
- High Pressure Cutout diagnostic
- More than normal number of fans
running
- Erratic Fan Control
- Higher than normal compressor
power
- Very low discharge superheat at
startup
- Compressor rattle or grinding
sound at startup
Some symptoms of an oil over
charged unit:
- Larger than normal evaporator
approach temperatures (Leaving
Water Temperature Saturated Evaporator Temperature)
- Low Evaporator Refrigerant
Temperature Limit
- Low Refrigerant Temperature
Cutout diagnostic
- Very erratic liquid level control
- Low unit capacity
- Low discharge superheat
(especially at high loads)
- Compressor rattle or grinding
sound
- High oil sump level after normal
shut down
Some symptoms of an oil under
charged unit:
- Compressor rattle or grinding
sound
- Lower than normal pressure drop
through oil system
- Seized or Welded Compressors
- Low oil sump level after normal
shut down
- Lower than normal oil
concentrations in evaporator
R134a Field Charging
Procedure
Be certain that the electrical power to
the unit is disconnected before
performing this procedure.
WARNING! Position all electrical
disconnects in the "OPEN" position
and lock them to prevent injury or
death due to electrocution.
Refrigerant Charging
If the refrigerant charge needs to be
adjusted, be certain to monitor the
subcooling and superheat
measurements. The subcooling
needs to be between 6°C (10°F) and
12°C (20°F) when the unit is running
fully loaded. The ambient
temperature is between 24°C (75°F)
and 38°C (100°F) and the leaving
water temperature is between 5°C
(41°F) and 13°C (55°F).
69
Maintenance Procedures
Isolating the refrigerant
charge in the high pressure
side for Low Side Repairs.
To perform this operation the unit
must be equipped with the optional
discharge service valve
If the refrigerant charge needs to be
isolated in the high side of the unit,
perform the following procedures:
1 Press the STOP key and send the
unit to a stopping mode.
2 Place a manifold gauge set on the
backseat port of the liquid line
servive valve before actually
closing the valve.
3 Close the liquid line service valve.
4 While the unit is in the STOP mode,
enable Service Pumpdown for the
specific compressor. Service
Pumpdown is found under the
Service Tests menu of the UCMCLD.
Note: Service Pumpdown can only
be enabled for one compressor at a
time. Only one pumpdown per
compressor can be performed, until
the unit has been reset.
With Service Pumpdown enabled,
the Restart inhibit will be ignored,
the EXV will be prepositioned and
the selected compressor will start
and run for one minute.
70
5 Once the compressor stops, close
the discharge service valve on the
compressor (this valve is optional
on RTAD).
6 The remaining refrigerant needs to
be recovered from the suction line
service valve. Attach the inlet of a
recovery system to the port of the
charging valve. Attach the outlet of
the recovery system to the
manifold gauge set that is already
attached to the access port on the
liquid line service valve. The
condenser will be used as a
storage vessel.
7 Complete all necessary repairs.
8 Evacuate out of the suction line
service charging valve.
9 Break the vaccum by adding
refrigerant in the suction line
through the service valve.
10 Open all valves, start the unit and
verify the refrigerant charge by
measuring the subcooling.
Isolating the refrigerant
charge in the low pressure
side for High Side Repairs
If the refrigerant charge needs to be
isolated in the low side of the unit,
perform the following procedures:
1 Press the STOP key and send the
unit to a stopping mode.
2 Close the discharge service valve
(optional on RTAD).
3 Before closing the liquid line
service valve, attach a manifold
gauge set to the liquid line
backseat port.
4 Close the liquid line service valve.
5 Attach the inlet of a liquid transfer
pump to the manifold gauge set
and the outlet of the service valve
mounted on the suction line.
This will transfer the liquid
refrigerant. As the low pressure side
cannot contain all the charge, the
remaining refrigerant will be
transferred to a separate vessel.
6 Remove all of the vapor from the
high side of the system.
7 Complete all necessary repairs.
8 Evacuate the high side through the
access port on the liquid line
service valve.
9 Open all the valves and run the
unit. Verify the refrigerant charge
by measuring the subcooling.
RTAD-SVX01D-E4
Maintenance Procedures
Adding Refrigerant
If the entire charge has been
removed, perform the following
procedures to recharge the unit.
1 Open all service valves
2 Establish water flow through the
evaporator. Connect a hose from
the refrigerant bottle to the
backseat port on the liquid line
shutoff valve. Midseat the valve.
CAUTION! The evaporator water
flow needs to be established and
maintained while adjusting the
charge to avoid freezing and
rupturing the tubes.
3 It may not be possible to put the
entire amount of refrigerant charge
required using step 2. If so, start
the unit and add liquid refrigerant
through the liquid line service
valve.
4 Once the unit has been charged
with refrigerant, start the unit.
Measure the subcooling and verify
that the refrigerant charge is
correct.
Table 36 - Refrigerant Charge
per Circuit (kg).
Unit Size
Standard
Free Cooling
RTAD 085
RTAD 100
RTAD 115
RTAD 125
RTAD 145
RTAD 150
RTAD 165
RTAD 180
RTAD 085 HE
RTAD 100 HE
RTAD 115 HE
RTAD 125 HE
RTAD 145 HE
RTAD 150 HE
Partial Heat Recovery
RTAD 085
RTAD 100
RTAD 115
RTAD 125
RTAD 145
RTAD 150
RTAD 165
RTAD 180
RTAD 085 HE
RTAD 100 HE
RTAD 115 HE
RTAD 125 HE
RTAD 145 HE
RTAD 150 HE
Total Heat Recovery
RTAD 100
RTAD 115
RTAD 125
RTAD 145
RTAD 150
RTAD 165
RTAD 180
RTAD 085 HE
RTAD 100 HE
RTAD 115 HE
RTAD 125 HE
RTAD 145 HE
RTAD 150 HE
Circuit A
Circuit B
24
30
35
36
44
44
61
61
32
35
42
42
59
59
24
32
36
37
48
48
59
61
34
36
45
45
61
61
26
33
38
39
47
47
65
65
35
38
45
45
63
63
26
35
39
40
51
51
63
65
37
39
48
48
65
65
55
67
68
86
86
100
100
63
65
86
86
97
97
52
64
64
84
84
95
98
60
62
84
84
95
95
Note: Size 085 does not exist for Total Heat
Recovery option but HE version is
available
RTAD-SVX01D-E4
Refrigerant Filter Changing
Procedure
A dirty filter is indicated by a
temperature gradient across the
filter, corresponding to a pressure
drop. If the temperature downstream
of the filter is 4.4°C (8°F) lower than
the upstream temperature, the filter
should be replaced. A temperature
drop can also indicate that the unit is
undercharged. Ensure proper
subcooling before taking
temperature readings.
1 With the unit off, verify that the
EXV is closed. Close liquid line
isolation valve. On units with
remote evaporators or oil cooling
circuits, close ball valve on oil
cooler liquid line.
2 Attach vacuum hose to service port
on liquid line filter flange.
3 Evacuate refrigerant from liquid
line and store.
4 Remove vacuum hose.
5 Depress schrader valve to equalize
pressure in liquid line with
atmospheric pressure.
6 Remove bolts that retain filter
flange.
7 Remove old filter element.
8 Inspect replacement filter element
and lubricate o-ring with Trane
OIL00048.
Note: do not use mineral oil. It will
contaminate the system.
9 Install new filter element in filter
housing.
10 Inspect flange gasket and replace
if damaged.
11 Install flange and torque bolts to
19-22 mN (14-16 lb-ft).
12 Attach vacuum hose and evacuate
liquid line.
13 Remove vacuum hose from liquid
line and attach charging hose.
14 Replace stored charge in liquid
line.
15 Remove charging hose.
16 Open liquid line isolation valve.
On units with remote evaporators
or oil cooler circuits, open oil
cooler liquid line ball valve.
71
Maintenance Procedures
Lubrication System
Oil Charging Procedure
The lubrication system has been
designed to keep most of the oil
lines filled with oil as long as there is
a proper oil level in the oil sump.
The total oil charge can be removed
by draining the oil system, oil return
line from the evaporator, the
evaporator, and the compressor. Very
small quantities of oil may be found
in other components.
Proper charging of the oil system is
critical to the reliability of the
compressor and chiller.
Too little oil can cause the compressor
to run hot and inefficiently. When
taken to an extreme, low oil level may
result in infant failure of the
compressor. Too much oil will result in
high oil- circulation rates, which will
foul the condenser and evaporator
performance. This will result in
inefficient operation of the chiller.
Taken to an extreme, high oil levels
may result in erratic expansion valve
control or shut down of the chiller due
to low evaporator-refrigerant
temperature. Too much oil may
contribute to long-term bearing wear.
Additionally, excessive compressor
wear is probable when the
compressor is started with the oil lines
dry.
Note: The oil system schematics are
represented in Figures 18-20.
The oil system consists of the
following components:
• Compressor
• Oil separator
• Discharge line with optional service
valve
• Oil line from separator to
compressor
• Oil line drain (lowest point in
system)
• Oil cooler
• Oil temperature sensor
• Oil line shut off valve with flare
service connection
• Oil filter (internal to compressor)
with flare fitting service connection
and schrader valve
• Oil flow control valve (internal to
the compressor after the filter)
72
The standard oil charge for each
circuit size is in Table 31.
Table 37 - Standard oil charge (l) (1)
Unit size
Circuit A
Standard
Partial Heat Recovery
Free Cooling
RTAD 085
6
RTAD 100
7
RTAD 115
9
RTAD 125-145-150
10
RTAD 165
15
RTAD 180
15
RTAD 085 HE
6
RTAD 100 HE
7
RTAD 115-125 HE
10
RTAD 145-150 HE
11
Total Heat Recovery
RTAD 100
5
RTAD 115-125-145-150
8
RTAD 165
13
RTAD 180
13
RTAD 085-100 HE
5
RTAD 115-125-145-150 HE
8
Circuit B
6
7
9
10
11
15
6
7
10
11
4
7
7
12
4
7
Note: Size 085 does not exist for Total Heat
Recovery option but HE version is
available
(1) Including oil charge within compressors.
Recommendation: check the oil level
in the sump using a sight glass
attached to charging hoses.
RTAD-SVX01D-E4
Maintenance Procedures
1 To measure the oil level, use the oil
drain valve on the oil line and a
service valve on the discharge line.
This measurement can only be
made when the circuit is not
running.
Note: the bottom plate of the oil
separator is approximately 25mm
(1'') thick.
2 After the unit has run for a while,
the oil level in the sump can vary
greatly. However, if the unit has
run "normal" conditions for a long
time the level should be between
25 to -100mm (+1" to - 4" )
The field charging procedure
depends on the circumstances that
resulted in the need for oil
charge.
1 Some service procedures may
result in loss of small quantities of
oil that must be replaced (oil
analysis, compressor filter
replacement, re-tubing the
evaporator, and so forth.).
2 Additionally, some maintenance
procedures may result in virtually
all of the oil being removed
(compressor motor burn or total
removal of the charge to trouble
shoot a unit).
3 Finally, leaks may result in a loss of
oil that must be replaced.
RTAD-SVX01D-E4
Factory (initial) OilCharging Procedure
The initial charging procedure
should be followed any time the unit
is new or has had all of the oil
removed.
1 Add 1 liter oil to the motor cavity
or suction line prior to installing
the compressor into the chiller.
2 The oil-line shutoff valve must be
open to allow the oil to pass into
the oil lines and the oil separator.
3 The oil charging port is a ¼" (6mm)
flare fitting with a schrader valve
that is on the side of the oil-filter
housing. This is the port that must
be used to add oil into the
compressor so that the filter and
lines are full at the first start of the
compressor.
4 Oil may be put into the unit using
either of two methods:
CAUTION! Use only Trane Oil 00048
in the RTAD units to avoid any
catastrophic damage to the
compressor or unit.
• Have the unit in vacuum. Hook up
the oil charging hose to oil charging
fitting and submerse the other end
into the oil container. Let the
vacuum draw the required amount
of oil into the unit.
• Have the unit at the same pressure
as the oil. Hook up the oil charging
hose to the oil charging fitting and
the other end to an oil pump. Use
the pump to draw oil out of the oil
container and push the required
amount of oil into the unit.
Note: the compressor filter has an
internal shut off valve that will
prevent oil from entering the
compressor while the compressor is
not running. Therefore, there is no
concern about flooding the
compressor with oil.
73
Maintenance Procedures
Field Oil-Charging
Procedure
Use the initial charging procedure
when virtually all of the oil has been
removed.
Note: this procedure can be followed
even with the refrigerant charge
isolated in the evaporating section of
the unit.
If small quantities of oil were
removed to service refrigeration
components, such as the
evaporator, simply replace the oil
that was removed into the serviced
component prior to vacuum and
recharge of the refrigerant.
If oil was removed to service a
compressor or change the filter
follow this procedure:
1 If the compressor is a new
compressor or has been removed
from the system and reworked,
add 1 liter oil to the motor cavity
prior to installing the compressor
into the chiller.
2 Install the compressor in the
system. Make sure that the filter
shut off valve is closed.
Other compressor isolation valves
may also be closed depending upon
the service that was completed. For
example, changing the oil filter
would require the compressor to be
isolated and pulled into vacuum.
74
Note: Ensure that the compressor is
not pressurized.
3 Open the flare fitting on the oil-line
shut off valve.
4 Open the flare fitting on the filter
housing. This is the port that must
be used to put oil into the
compressor.
5 Install charging hose on oil
charging port (with the Schrader
valve) and the other on the oil
canister.
6 Lift the oil canister, or use a pump,
to pour oil into the filter housing.
7 When oil comes out of the flare
fitting on the oil line shut off valve
the filter is full. Stop adding oil.
8 Put the cap on the flare on the oil
line shut off valve, remove the
charging hose and put the cap back
on the flare on the filter housing.
9 Vacuum the compressor (low side)
and prepare it for inclusion in the
system. There is a service valve on
the suction line. Use these valves
to vacuum the compressor.
10 Open the oil line shut off valve.
Severe damage to the compressor
can result if the oil line shut off
valve is closed when the
compressor is started.
WARNING! Catastrophic damage to
the compressor will occur if the oil
line shut off valve or the isolation
valves are left closed on unit startup.
11 Open the other compressor
isolation valves.
Note: this procedure assumes that
the oil that is put into the filter
housing does not have contaminants
such as non-condensable gases. The
oil forces these gases out of the filter
and oil line shut off valve without the
need to pull a vacuum on this small
volume. If the oil has been in an
open container or is otherwise
contaminated, then this small
volume must be subject to vacuum
as well. However, the filter cavity is
full of oil. Therefore, be sure to use a
flash tank in line with the vacuum
pump to make sure that oil, that is
pulled out of the filter cavity, does
not slug the vacuum pump.
RTAD-SVX01D-E4
Maintenance Procedures
Evaporator Heat Tape
Checkout Procedure
CAUTION! If the heat tapes wrapped
around the evaporator barrel fail, the
evaporator will freeze causing
catastrophic damage to the entire
unit.
To check the heat tapes wrapped
around the barrel follow the
procedures below.
1 Locate the connection under the
evaporator insulation near the
bottom of the barrel.
CAUTION! Do not cut past the
evaporator insulation. Electrical
damage to the heat tape wires will
occur if cutting of the insulation is
done improperly.
The resistance can be checked with
an ohmmeter to determine if there is
an open or a short. If a heater has
failed, replace as follows:
1 Remove the insulation around the
heater.
2 Remove the old heater.
3 The factory installed heaters have
the wire run under the insulation of
the evaporator. This can be copied
by cutting a small strip of
insulation out and replacing it with
tape.
4 Replace any insulation that was
removed.
5 Wire the heaters into the system as
per the wiring diagram.
6 Recheck the resistance to verify
that they are wired correctly.
RTAD-SVX01D-E4
Safety recommendations
To avoid accidents and damage, the
following recommendations should
be observed during maintenance
and service visits:
1. The maximum allowable pressures
for system leak testing on low and
high pressure side are given in the
chapter "Installation". Always
provide a pressure regulator.
2. Disconnect the main supply before
any servicing on the unit.
3. Service work on the refrigeration
system and the electrical system
should be carried out only by
qualified and experienced
personnel.
75
Literature Order Number
www.trane.com
For more information, contact your local
sales office or e-mail us at comfort@trane.com
RTAD-SVX01D-E4
Date
0106
Supersedes
RTAD-SVX01C-E4_0705
Stocking Location
Europe
Trane has a policy of continuous product and product data improvement and reserves the right to change
design and specifications without notice. Only qualified technicians should perform the installation and
servicing of equipment referred to in this publication.
American Standard Europe BVBA
Registered Office: 1789 Chaussée de Wavre, 1160 Brussels - Belgium
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising