Trane RTAD-SVX01E, RTAD-SVX01E4 User Manual

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Installation Operation Maintenance

RTAD-SVX01E-E4

Series R™ Air-Cooled Helical Rotary Liquid Chiller

RTAD 085 - 180 (50Hz) Standard, Free Cooling and Heat Recovery models

RTAD-SVX01E-E4

©American Standard Inc. 2006

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-damageonly 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.

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 deli

very and immediately

treated as visible damage.

General information

RTAD-SVX01E-E4 3

General information

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.

Contents

4 RTAD-SVX01E-E4

General Information 2

Unit Inspection 7 Loose Parts Inventory 7 General Data - Standard cooling unit 8 General Data - Free-cooling unit 16 General Data - Heat Recovery unit 18 Unit Dimensions 23

Installation - Mechanical 24

Installation Responsibilities 24 Nameplates 24 Storage 26 Location Requirements 26

Isolation and Sound Emission 26 Neoprene Isolator Installation 26 Noise Considerations 26 Foundation 27 Clearances 27

Drainage 28 Unit Water Piping 28 Unit Piping 28 Entering Chilled Water Piping 29 Leaving Chilled Water Piping 29 Heat Recovery Water Piping 29 Evaporator Drain 29 Evaporator Flow Switch 29 Water Treatment 30 Water Pressure Gauges 41 Water Pressure Relief Valves 41 Freeze Protection 41

Installation - Electrical 42

General Recommendations 43 Installer-Supplied Components 48 Power Supply Wiring 48

Control Power Supply 48

Heater Power Supply 48

Water Pump Power Supply 48 Interconnecting Wiring 49

Chilled Water Flow (Pump) Interlock 49

Chilled Water Pump Control 49

Alarm and Status Relay Outputs

(Programmable Relays) 52 Low Voltage Wiring 54 External Emergency Stop 54 External Auto/Stop 54 External Circuit Lockout - Circuit 1 and Circuit 2 54 Ice Making Option 55 External Chilled Water Setpoint (CWS) 55 External Current Limit Setpoint (CLS) 56 Outdoor Air Temperature Sensor 56 Communication Card CSR 57 Communication link connection procedure 57 LonTalk communication interface 58

Operating Principles 64

System schematics 64

Pre-Start Checkout 67

Installation Checklist 67 Receiving 67 Unit Location and Mounting 67 Unit Piping 67 Electrical Wiring 67 General 68 Unit Voltage Power Supply 69 Unit Voltage Imbalance 69 Unit Voltage Phasing 69 Water System Flow Rates 70 Water System Pressure Drop 70

Contents

RTAD-SVX01E-E4 5

6 RTAD-SVX01E-E4

Contents

Unit Start-up Procedures 71

Daily Unit Start-Up 71 General 72 Seasonal Unit Start-Up Procedure 73 System Restart After Extended Shutdown 73

Unit Shutdown Procedures 74

Temporary Shutdown And Restart 74 Extended Shutdown Procedure 74

Maintenance 75

General 75 Weekly Maintenance 75 Monthly Maintenance 75 Annual Maintenance 75

Maintenance Procedures 76

Refrigerant Emission Control 76 Refrigerant and Oil Charge Management 77 R134a Field Charging Procedure 77 Refrigerant Charging 77 Isolating the Refrigerant in the High Pressure Side 78 Isolating the Refrigerant in the Low Pressure Side 78 Adding Refrigerant 79 Refrigerant Filter Changing Procedure 79 Lubrication System 80 Oil Charging Procedure 80 Factory (initial) Oil Charging Procedure 81 Field Oil Charging Procedure 82 Evaporator Heat Tape Checkout Procedure 83 Safety recommendations 83

RTAD-SVX01E-E4 7

General Information

Unit Inspection

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.

Loose Parts Inventory

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.

Figure 1 - Typical Unit Nameplate

8 RTAD-SVX01E-E4

General Information

General Data - SI Units

Table 1 - General Data RTAD Standard

Size 085 100 115 125 145 150 165 180

Compressor Quantity 22222222 Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85 100/85 100/100

Evaporator

Evaporator Model EG120 EG140 EG170 EG200 EG200 EG200 EG250 EG250 Water Storage (l) 106 270 222 204 204 204 415 415 Minimum Flow (l/s) 4.1 6.0 7.3 8.8 8.8 8.8 11.6 11.6 Maximum Flow (l/s) 17.3 20.8 24.8 30.7 30.7 30.7 38.0 38.0

Condenser

Qty of Coils 22222222 Coil Length (mm) 2743 3658 3658 3658 4572 4572 5486 5486 Coil Height (mm) 1626 1626 1626 1626 1626 1626 1626 1626 Fin series (Fins/ft) 192 192 192 192 192 192 192 192 Number of Rows 3/3 2/2 3/3 3/3 3/3 3/3 3/3 3/3

Condenser Fans

Quantity (1) 3/3 3/3 3/3 3/3 5/4 5/5 6/5 6/6 Diameter (mm) 762 762 762 762 762 762 762 762 Total Air Flow (m3/s) 23.4 28.5 27.0 27.0 37.0 39.0 44.9 46.8 Nominal RPM 915 915 915 915 915 915 915 915 Tip Speed (m/s) 36.5 36.5 36.5 36.5 36.5 36.5 36.5 36.5 Motor kW (kW) 2.05 2.05 2.05 2.05 2.05 2.05 2.05 2.05

Min Starting/Oper Ambient (2)

Standard Unit (°C) 00000000 Low Ambient Unit (°C) -18 -18 -18 -18 -18 -18 -18 -18

General Unit

Operating Weight (4) (kg) 2660 3105 3555 3570 4260 4520 5440 5525

Shipping Weight (4) (kg) 2554 2838 3333 3368 4057 4317 5023 5108

Table 2 - General Data RTAD High Efficiency

Size 085 100 115 125 145 150

Compressor Quantity 222222 Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85

Evaporator

Evaporator Model EG140 EG170 EG200 EG200 EG250 EG250 Water Storage (l) 270 222 204 204 415 415 Minimum Flow (l/s) 6.0 7.3 8.8 8.8 11.6 11.6 Maximum Flow (l/s) 20.8 24.8 30.7 30.7 38.0 38.0

Condenser

Qty of Coils 222222 Coil Length (mm) 3658 3658 4572 4572 5486 5486 Coil Height (mm) 1626 1626 1626 1626 1626 1626 Fin series (Fins/ft) 192 192 192 192 192 192 Number of Rows 3/3 3/3 3/3 3/3 3/3 3/3

Condenser Fans

Quantity (1) 3/3 4/4 4/4 5/5 6/5 6/6 Diameter (mm) 762 762 762 762 762 762 Total Air Flow (m3/s) 27.0 31.2 35.0 39.0 44.8 46.8 Nominal RPM 915 915 915 915 915 915 Tip Speed (m/s) 36.5 36.5 36.5 36.5 36.5 36.5 Motor kW (kW) 2.05 2.05 2.05 2.05 2.05 2.05

Min Starting/Oper Ambient (2)

Standard Unit (°C) 000000 Low Ambient Unit (°C) -18 -18 -18 -18 -18 -18

General Unit

Refrigerant HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a No. Of independent 222222 Refrigerant Circuits % Min. Load (3) 17 17 17 17 17 17 Refrigerant Charge (1) (kg) 32/34 35/36 42/45 42/45 59/61 59/61 Oil Charge (1) (l) 6/6 7/7 10/10 10/10 11/11 11/11 Operating Weight (4) (kg) 3240 3370 3905 4000 5390 5445 Shipping Weight (4) (kg) 2973 3148 3702 3797 4973 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-SVX01E-E4 9

General Information

Table 3 - General Data RTAD Standard Low Noise

Size 085 100 115 125 145 150 165 180

Compressor Quantity 22222222 Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85 100/85 100/100

Evaporator

Condenser

Condenser Fans

Quantity (1) 3/3 3/3 3/3 3/3 5/4 5/5 6/5 6/6 Diameter (mm) 762 762 762 762 762 762 762 762 Total Air Flow (m3/s) 18.1 22.4 21.0 21.0 28.7 30.1 34.7 36.2 Nominal RPM 730 730 730 730 730 730 730 730 Tip Speed (m/s) 29.1 29.1 29.1 29.1 29.1 29.1 29.1 29.1 Motor kW (kW) 1.30 1.30 1.30 1.30 1.30 1.30 1.30 1.30

Min Starting/Oper Ambient (2)

Standard Unit (°C) 00000000 Low Ambient Unit (°C) -18 -18 -18 -18 -18 -18 -18 -18

General Unit

Refrigerant HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a No. Of independent 22222222 Refrigerant Circuits % Min. Load (3) 17 17 17 17 17 17 17 17 Refrigerant Charge (1) (kg) 24/24 30/32 35/36 36/37 44/48 44/48 61/59 61/61 Oil Charge (1) (l) 6/6 7/7 9/9 10/10 10/10 10/10 15/11 15/15 Operating Weight (4) (kg) 2760 3205 3655 3670 4360 4620 5540 5625 Shipping Weight (4) (kg) 2654 2938 3433 3468 4157 4417 5123 5208

Table 4 - General Data RTAD High Efficiency Low Noise

Size 085 100 115 125 145 150

Compressor Quantity 222222 Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85

Evaporator

Evaporator Model EG140 EG170 EG200 EG200 EG250 EG250 Water Storage (l) 270 222 204 204 415 415 Minimum Flow (l/s) 6.0 7.3 8.8 8.8 11.6 11.6 Maximum Flow (l/s) 20.8 24.8 30.7 30.7 38.0 38.0

Condenser

Qty of Coils 222222 Coil Length (mm) 3658 3658 4572 4572 5486 5486 Coil Height (mm) 1626 1626 1626 1626 1626 1626 Fin series (Fins/ft) 192 192 192 192 192 192 Number of Rows 3/3 3/3 3/3 3/3 3/3 3/3

Condenser Fans

Quantity (1) 3/3 4/4 4/4 5/5 6/5 6/6 Diameter (mm) 762 762 762 762 762 762 Total Air Flow (m3/s) 21.0 24.1 27.2 30.1 34.7 36.1 Nominal RPM 690 690 690 690 690 690 Tip Speed (m/s) 27.5 27.5 27.5 27.5 27.5 27.5 Motor kW (kW) 1.30 1.30 1.30 1.30 1.30 1.30

Min Starting/Oper Ambient (2)

Standard Unit (°C) 000000 Low Ambient Unit (°C) -18 -18 -18 -18 -18 -18

General Unit

Refrigerant HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a No. Of independent 222222 Refrigerant Circuits % Min. Load (3) 17 17 17 17 17 17 Refrigerant Charge (1) (kg) 32/34 35/36 42/45 42/45 59/61 59/61 Oil Charge (1) (l) 6/6 7/7 10/10 10/10 11/11 11/11 Operating Weight (4) (kg) 3340 3470 40 05 4100 5490 5545 Shipping Weight (4) (kg) 3073 3248 3802 3897 5073 5128

10 RTAD-SVX01E-E4

General Information

Table 5 - General Data RTAD Standard Low Noise with Night Noise Set Back option

Size 085 100 115 125 145 150 165 180

Compressor Quantity 22222222 Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85 100/85 100/100

Evaporator

Condenser

Condenser Fans

Quantity (1) 2/2 3/3 3/3 3/3 4/4 4/4 5/5 5/5 Diameter (mm) 762 762 762 762 762 762 762 762 Total Air Flow (m3/s) 13.4 20.5 19.3 19.3 25.0 25.0 30.7 30.7 Nominal RPM 550 550 550 550 550 550 550 550 Tip Speed (m/s) 21.9 21.9 21.9 21.9 21.9 21.9 21.9 21.9 Motor kW (kW) 1.05 1.05 1.05 1.05 1.05 1.05 1.05 1.05

Min Starting/Oper Ambient (2)

Standard Unit (°C) 00000000 Low Ambient Unit (°C) -18 -18 -18 -18 -18 -18 -18 -18

General Unit

Refrigerant HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a No. Of independent 22222222 Refrigerant Circuits % Min. Load (3) 17 17 17 17 17 17 17 17 Refrigerant Charge (1) (kg) 24/24 30/32 35/36 36/37 44/48 44/48 61/59 61/61 Oil Charge (1) (l) 6/6 7/7 9/9 10/10 10/10 10/10 15/11 15/15 Operating Weight (4) (kg) 2660 3205 3655 3670 4310 4520 5490 5525 Shipping Weight (4) (kg) 2554 2938 3433 3468 4107 4317 5073 5108

Table 6 - General Data RTAD High Efficiency Low Noise with Night Noise Set Back option

Size 085 100 115 125 145 150

Compressor Quantity 222222 Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85

Evaporator

Evaporator Model EG140 EG170 EG200 EG200 EG250 EG250 Water Storage (l) 270 222 204 204 415 415 Minimum Flow (l/s) 6.0 7.3 8.8 8.8 11.6 11.6 Maximum Flow (l/s) 20.8 24.8 30.7 30.7 38.0 38.0

Condenser

Qty of Coils 222222 Coil Length (mm) 3658 3658 4572 4572 5486 5486 Coil Height (mm) 1626 1626 1626 1626 1626 1626 Fin series (Fins/ft) 192 192 192 192 192 192 Number of Rows 3/3 3/3 3/3 3/3 3/3 3/3

Condenser Fans

Quantity (1) 3/3 3/3 4/4 4/4 5/5 5/5 Diameter (mm) 762 762 762 762 762 762 Total Air Flow (m3/s) 19.2 19.2 24.9 25.0 30.6 30.6 Nominal RPM 550 550 550 550 550 550 Tip Speed (m/s) 21.9 21.9 21.9 21.9 21.9 21.9 Motor kW (kW) 1.05 1.05 1.05 1.05 1.05 1.05

Min Starting/Oper Ambient (2)

Standard Unit (°C) 000000 Low Ambient Unit (°C) -18 -18 -18 -18 -18 -18

General Unit

Refrigerant HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a No. Of independent 222222 Refrigerant Circuits % Min. Load (3) 17 17 17 17 17 17 Refrigerant Charge (1) (kg) 32/34 35/36 42/45 42/45 59/61 59/61 Oil Charge (1) (l) 6/6 7/7 10/10 10/10 11/11 11/11 Operating Weight (4) (kg) 3340 3370 40 05 4000 5440 5445 Shipping Weight (4) (kg) 3073 3148 3802 3797 5023 5028

RTAD-SVX01E-E4 11

General Information

Table 7 - General Data RTAD Standard High External Static Pressure

Size 085 100 115 125 145 150 165 180

Compressor Quantity 22222222 Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85 100/85 100/100

Evaporator

Condenser

Condenser Fans

Quantity (1) 3/3 3/3 3/3 3/3 5/4 5/5 6/5 6/6 Diameter (mm) 762 762 762 762 762 762 762 762 Total Air Flow (m3/s) 23.7 29.5 27.6 27.6 37.6 39.5 45.5 47.4 Nominal RPM 935 935 935 935 935 935 935 935 Tip Speed (m/s) 37.3 37.3 37.3 37.3 37.3 37.3 37.3 37.3 Motor kW (kW) 2.21 2.21 2.21 2.21 2.21 2.21 2.21 2.21

Min Starting/Oper Ambient (2)

Standard Unit (°C) 00000000 Low Ambient Unit (°C) -18 -18 -18 -18 -18 -18 -18 -18

General Unit

Refrigerant R134a R134a R134a R134a R134a R134a R134a R134a No. Of independent 22222222 Refrigerant Circuits % Min. Load (3) 17 17 17 17 17 17 17 17 Refrigerant Charge (1) (kg) 24/24 30/32 35/36 36/37 44/48 44/48 61/59 61/61 Oil Charge (1) (l) 6/6 7/7 9/9 10/10 10/10 10/10 15/11 15/15 Operating Weight (4) (kg) 2660 3105 3555 3570 4260 4520 5440 5525 Shipping Weight (4) (kg) 2554 2838 3333 3368 4057 4317 5023 5108

Table 8 - General Data RTAD High Efficiency High External Static Pressure

Size 085 100 115 125 145 150

Compressor Quantity 222222 Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85

Evaporator

Evaporator Model EG140 EG170 EG200 EG200 EG250 EG250 Water Storage (l) 270 222 204 204 415 415 Minimum Flow (l/s) 6.0 7.3 8.8 8.8 11.6 11.6 Maximum Flow (l/s) 20.8 24.8 30.7 30.7 38.0 38.0

Condenser

Qty of Coils 222222 Coil Length (mm) 3658 3658 4572 4572 5486 5486 Coil Height (mm) 1626 1626 1626 1626 1626 1626 Fin series (Fins/ft) 192 192 192 192 192 192 Number of Rows 3/3 3/3 3/3 3/3 3/3 3/3

Condenser Fans

Quantity (1) 3/3 4/4 4/4 5/5 6/5 6/6 Diameter (mm) 762 762 762 762 762 762 Total Air Flow (m3/s) 27.6 31.5 35.6 39.4 45.4 47.3 Nominal RPM 935 935 935 935 935 935 Tip Speed (m/s) 37.3 37.3 37.3 37.3 37.3 37.3 Motor kW (kW) 2.21 2.21 2.21 2.21 2.21 2.21

Min Starting/Oper Ambient (2)

Standard Unit (°C) 000000 Low Ambient Unit (°C) -18 -18 -18 -18 -18 -18

General Unit

Refrigerant R134a R134a R134a R134a R134a R134a No. Of independent 222222 Refrigerant Circuits % Min. Load (3) 17 17 17 17 17 17 Refrigerant Charge (1) (kg) 32/34 35/36 42/45 42/45 59/61 59/61 Oil Charge (1) (l) 6/6 7/7 10/10 10/10 11/11 11/11 Operating Weight (4) (kg) 3240 3370 3905 4000 5390 5445 Shipping Weight (4) (kg) 2973 3148 3702 3797 4973 5028

12 RTAD-SVX01E-E4

General Information

English Units

Table 9 - General Data RTAD Standard

Size 085 100 115 125 145 150 165 180

Compressor Quantity 22222222 Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85 100/85 100/100

Evaporator

Evaporator Model EG120 EG140 EG170 EG200 EG200 EG200 EG250 EG250 Water Storage (Gallon) 28.0 71.3 58.7 53.9 53.9 53.9 109.6 109.6 Minimum Flow (GPM) 65.2 95.1 115.0 139.2 139.2 139.2 184.0 184.0 Maximum Flow (GPM) 274.6 329.9 393.1 486.4 486.4 486.4 603.0 603.0

Condenser

Qty of Coils 22222222 Coil Length (inch) 108 144 144 144 180 180 216 216 Coil Height (inch) 64 64 64 64 64 64 64 64 Fin series (Fins/ft) 192 192 192 192 192 192 192 192 Number of Rows 3/3 2/2 3/3 3/3 3/3 3/3 3/3 3/3

Condenser Fans

Quantity (1) 3/3 3/3 3/3 3/3 5/4 5/5 6/5 6/6 Diameter (inch) 30 30 30 30 30 30 30 30 Total Air Flow (CFM) 49556 60460 57194 57248 78439 82716 95103 99250 Nominal RPM 915 915 915 915 915 915 915 915 Tip Speed (Ft/s) 119.8 119.8 119.8 119.8 119.8 119.8 119.8 119.8 Motor kW (kW) 2.05 2.05 2.05 2.05 2.05 2.05 2.05 2.05

Min Starting/Oper Ambient (2)

Standard Unit (°F) 32 32 32 32 32 32 32 32 Low Ambient Unit (°F) 00000000

General Unit

Refrigerant HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a No. Of independent 22222222 Refrigerant Circuits % Min. Load (3) 17 17 17 17 17 17 17 17 Refrigerant Charge (1) (lbs.) 52.9/52.9 66.1/70.5 77.2/79.4 79.4/81.6 97/105.8 97/105.8 134.5/130.1 134.5/134.5 Oil Charge (1) (Gallon) 1.59/1.59 1.85/1.85 2.38/2.38 2.64/2.64 2.64/2.64 2.64/2.64 3.96/2.91 3.96/3.96 Operating Weight (4) (lbs.) 5864 6845 7837 7871 9392 9965 11993 12181 Shipping Weight (4) (lbs.) 5631 6257 7348 7425 8944 9517 11074 11261

Table 10 - General Data RTAD High Efficiency

Size 085 100 115 125 145 150

Compressor Quantity 222222 Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85

Evaporator

Evaporator Model EG140 EG170 EG200 EG200 EG250 EG250 Water Storage (Gallon) 71.3 58.7 53.9 53.9 109.6 109.6 Minimum Flow (GPM) 95.1 115.0 139.2 139.2 184.0 184.0 Maximum Flow (GPM) 329.9 393.1 486.4 486.4 603.0 603.0

Condenser

Qty of Coils 222222 Coil Length (inch) 144 144 180 180 216 216 Coil Height (inch) 64 64 64 64 64 64 Fin series (Fins/ft) 192 192 192 192 192 192 Number of Rows 3/3 3/3 3/3 3/3 3/3 3/3

Condenser Fans

Quantity (1) 3/3 4/4 4/4 5/5 6/5 6/6 Diameter (inch) 30 30 30 30 30 30 Total Air Flow (CFM) 57108 66046 74100 82628 95008 99132 Nominal RPM 915 915 915 915 915 915 Tip Speed (Ft/s) 119.8 119.8 119.8 119.8 119.8 119.8 Motor kW (kW) 2.05 2.05 2.05 2.05 2.05 2.05

Min Starting/Oper Ambient (2)

Standard Unit (°F) 32 32 32 32 32 32 Low Ambient Unit (°F) 000000

General Unit

Refrigerant HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a No. Of independent 222222 Refrigerant Circuits % Min. Load (3) 17 17 17 17 17 17 Refrigerant Charge (1) (lbs.) 70.5/75.0 77.2/79.4 92.6/99.2 92.6/99.2 130.1/134.5 130.1/134.5 Oil Charge (1) (Gallon) 1.59/1.59 1.85/1.85 2.64/2.64 2.64/2.64 2.91/2.91 2.91/2.91 Operating Weight (4) (lbs.) 7143 7430 8609 8818 11883 120 04 Shipping Weight (4) (lbs.) 6554 6940 8162 8371 10964 11085

RTAD-SVX01E-E4 13

General Information

Table 11 - General Data RTAD Standard Low Noise

Size 085 100 115 125 145 150 165 180

Compressor Quantity 22222222 Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85 100/85 100/100

Evaporator

Condenser

Condenser Fans

Quantity (1) 3/3 3/3 3/3 3/3 5/4 5/5 6/5 6/6 Diameter (inch) 30 30 30 30 30 30 30 30 Total Air Flow (CFM) 38246 47434 44514 44568 60751 63878 73628 76644 Nominal RPM 730 730 730 730 730 730 730 730 Tip Speed (Ft/s) 95.6 95.6 95.6 95.6 95.6 95.6 95.6 95.6 Motor kW (kW) 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3

Min Starting/Oper Ambient (2)

Standard Unit (°F) 32 32 32 32 32 32 32 32 Low Ambient Unit (°F) 00000000

General Unit

Refrigerant HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a No. Of independent 22222222 Refrigerant Circuits % Min. Load (3) 17 17 17 17 17 17 17 17 Refrigerant Charge (1) (Lbs.) 52.9/52.9 66.1/70.5 77.2/79.4 79.4/81.6 97/105.8 97/105.8 134.5/130.1 134.5/134.5 Oil Charge (1) (Gallon) 1.59/1.59 1.85/1.85 2.38/2.38 2.64/2.64 2.64/2.64 2.64/2.64 3.96/2.91 3.96/3.96 Operating Weight (4) (Lbs.) 6085 7066 8058 8091 9612 10185 12214 12401 Shipping Weight (4) (Lbs.) 5851 6477 7568 7646 9165 9738 11294 11482

Table 12 - General Data RTAD High Efficiency Low Noise

Size 085 100 115 125 145 150

Compressor Quantity 222222 Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85

Evaporator

Condenser

Qty of Coils 222222 Coil Length (inch) 144 144 180 180 216 216 Coil Height (inch) 64 64 64 64 64 64 Fin series (Fins/ft) 192 192 192 192 192 192 Number of Rows 3/3 3/3 3/3 3/3 3/3 3/3

Condenser Fans

Quantity (1) 3/3 4/4 4/4 5/5 6/5 6/6 Diameter (inch) 30 30 30 30 30 30 Total Air Flow (CFM) 44426 50964 57562 63784 73521 76510 Nominal RPM 690 690 690 690 690 690 Tip Speed (Ft/s) 90.3 90.3 90.3 90.3 90.3 90.3 Motor kW (kW) 1.3 1.3 1.3 1.3 1.3 1.3

Min Starting/Oper Ambient (2)

Standard Unit (°F) 32 32 32 32 32 32 Low Ambient Unit (°F) 000000

General Unit

Refrigerant HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a No. Of independent 222222 Refrigerant Circuits % Min. Load (3) 17 17 17 17 17 17 Refrigerant Charge (1) (Lbs.) 70.5/75.0 77.2/79.4 92.6/99.2 92.6/99.2 130.1/134.5 130.1/134.5 Oil Charge (1) (Gallon) 1.59/1.59 1.85/1.85 2.64/2.64 2.64/2.64 2.91/2.91 2.91/2.91 Operating Weight (4) (Lbs.) 7363 7650 8830 9039 12103 12225 Shipping Weight (4) (Lbs.) 6775 7161 8382 8591 11184 11305

14 RTAD-SVX01E-E4

General Information

Table 13 - General Data RTAD Standard Low Noise with Night Noise Set Back option

Size 085 100 115 125 145 150 165 180

Compressor Quantity 22222222 Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85 100/85 100/100

Evaporator

Condenser

Qty of Coils 22222222 Coil Length (inch) 108 144 144 144 180 180 216 216 Coil Height (inch) 64 64 64 64 64 64 64 64 Fin series (Fins/ft) 192 192 192 192 192 192 192 192 Number of Rows 37318 37289 37318 37318 37318 37318 37318 37318

Condenser Fans

Quantity (1) 2/2 3/3 3/3 3/3 4/4 4/4 5/5 5/5 Diameter (inch) 30 30 30 30 30 30 30 30 Total Air Flow (CFM) 28479 43376 40791 40842 52929 52962 64956 65000 Nominal RPM 550 550 550 550 550 550 550 550 Tip Speed (Ft/s) 72.0 72.0 72.0 72.0 72.0 72.0 72.0 72.0 Motor kW (kW) 1.05 1.05 1.05 1.05 1.05 1.05 1.05 1.05

Min Starting/Oper Ambient (2)

Standard Unit (°F) 32 32 32 32 32 32 32 32 Low Ambient Unit (°F) 00000000

General Unit

Refrigerant HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a No. Of independent 22222222 Refrigerant Circuits % Min. Load (3) 17 17 17 17 17 17 17 17 Refrigerant Charge (1) (lbs.) 52.9/52.9 66.1/70.5 77.2/79.4 79.4/81.6 97/105.8 97/105.8 134.5/130.1 134.5/134.5 Oil Charge (1) (Gallon) 1.59/1.59 1.85/1.85 2.38/2.38 2.64/2.64 2.64/2.64 2.64/2.64 3.96/2.91 3.96/3.96 Operating Weight (4) (lbs.) 5864 7066 8058 8091 9502 9965 12103 12181 Shipping Weight (4) (lbs.) 5631 6477 7568 7646 9054 9517 11184 11261

Table 14 - General Data RTAD High Efficiency Low Noise with with Night Noise Set Back option

Size 085 100 115 125 145 150

Compressor Quantity 222222 Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85

Evaporator

Condenser

Qty of Coils 222222 Coil Length (inch) 144 144 180 180 216 216 Coil Height (inch) 64 64 64 64 64 64 Fin series (Fins/ft) 192 192 192 192 192 192 Number of Rows 37318 37318 37318 37318 37318 37318

Condenser Fans

Quantity (1) 3/3 3/3 4/4 4/4 5/5 5/5 Diameter (inch) 30 30 30 30 30 30 Total Air Flow (CFM) 40710 40746 52846 52904 64872 64906 Nominal RPM 550 550 550 550 550 550 Tip Speed (Ft/s) 72.0 72.0 72.0 72.0 72.0 72.0 Motor kW (kW) 1.05 1.05 1.05 1.05 1.05 1.05

Min Starting/Oper Ambient (2)

Standard Unit (°F) 32 32 32 32 32 32 Low Ambient Unit (°F) 000000

General Unit

Refrigerant HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a No. Of independent 222222 Refrigerant Circuits % Min. Load (3) 17 17 17 17 17 17 Refrigerant Charge (1) (lbs.) 70.5/75.0 77.2/79.4 92.6/99.2 92.6/99.2 130.1/134.5 130.1/134.5 Oil Charge (1) (Gallon) 1.59/1.59 1.85/1.85 2.64/2.64 2.64/2.64 2.91/2.91 2.91/2.91 Operating Weight (4) (lbs.) 7363 7430 8830 8818 11993 12004 Shipping Weight (4) (lbs.) 6775 6940 8382 8371 11074 11085

Table 15 - General Data RTAD Standard High External Static Pressure

Size 085 100 115 125 145 150 165 180

Compressor Quantity 22222222 Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85 100/85 100/100

Evaporator

Condenser

Qty of Coils 22222222 Coil Length (inch) 108 144 144 144 180 180 216 216 Coil Height (inch) 64 64 64 64 64 64 64 64 Fin series (Fins/ft) 192 192 192 192 192 192 192 192 Number of Rows 37683 37654 37683 37683 37683 37683 37683 37683

Condenser Fans

Quantity (1) 3/3 3/3 3/3 3/3 5/4 5/5 6/5 6/6 Diameter (inch) 30 30 30 30 30 30 30 30 Total Air Flow (CFM) 50118 62540 58514 58578 79569 83640 96363 100368 Nominal RPM 935 935 935 935 935 935 935 935 Tip Speed (Ft/s) 122.4 122.4 122.4 122.4 122.4 122.4 122.4 122.4 Motor kW (kW) 2.21 2.21 2.21 2.21 2.21 2.21 2.21 2.21

Min Starting/Oper Ambient (2)

Standard Unit (°F) 32 32 32 32 32 32 32 32 Low Ambient Unit (°F) 00000000

General Unit

Refrigerant R134a R134a R134a R134a R134a R134a R134a R134a No. Of independent 22222222 Refrigerant Circuits % Min. Load (3) 17 17 17 17 17 17 17 17 Refrigerant Charge (1) (lbs.) 52.9/52.9 66.1/70.5 77.2/79.4 79.4/81.6 97/105.8 97/105.8 134.5/130.1 134.5/134.5 Oil Charge (1) (Gallon) 1.59/1.59 1.85/1.85 2.38/2.38 2.64/2.64 2.64/2.64 2.64/2.64 3.96/2.91 3.96/3.96 Operating Weight (4) (lbs.) 5864 6845 7837 7871 9392 9965 11993 12181 Shipping Weight (4) (lbs.) 5631 6257 7348 7425 8944 9517 11074 11261

Table 16 - General Data RTAD High Efficiency High External Static Pressure

Size 085 100 115 125 145 150

Compressor Quantity 222222 Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85

Evaporator

Condenser

Qty of Coils 222222 Coil Length (inch) 144 144 180 180 216 216 Coil Height (inch) 64 64 64 64 64 64 Fin series (Fins/ft) 192 192 192 192 192 192 Number of Rows 37683 37683 37683 37683 37683 37683

Condenser Fans

Quantity (1) 3/3 4/4 4/4 5/5 6/5 6/6 Diameter (inch) 30 30 30 30 30 30 Total Air Flow (CFM) 58412 66796 75432 83562 96257 100248 Nominal RPM 935 935 935 935 935 935 Tip Speed (Ft/s) 122.4 122.4 122.4 122.4 122.4 122.4 Motor kW (kW) 2.21 2.21 2.21 2.21 2.21 2.21

Min Starting/Oper Ambient (2)

Standard Unit (°F) 32 32 32 32 32 32 Low Ambient Unit (°F) 000000

General Unit

Refrigerant R134a R134a R134a R134a R134a R134a No. Of independent 222222 Refrigerant Circuits % Min. Load (3) 17 17 17 17 17 17 Refrigerant Charge (1) (Lbs.) 70.5/75.0 77.2/79.4 92.6/99.2 92.6/99.2 130.1/134.5 130.1/134.5 Oil Charge (1) (Gallon) 1.59/1.59 1.85/1.85 2.64/2.64 2.64/2.64 2.91/2.91 2.91/2.91 Operating Weight (4) (Lbs.) 7143 7430 8609 8818 11883 120 04 Shipping Weight (4) (Lbs.) 6554 6940 8162 8371 10964 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-SVX01E-E4 15

General Information

16 RTAD-SVX01E-E4

General Information

Table 17 - General Data RTAD FC Standard

Unit Size 085 100 115 125 145 150 165 180

Number of Compressors 22222222 Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85 100/85 100/100

Evaporator

Evaporator Model EG120 EG140 EG170 EG200 EG200 EG200 EG250 EG250 Water Storage (l) 106 270 222 204 204 204 415 415 Minimum Flow (l/s) 4.1 6 7.3 8.8 8.8 8.8 11.6 11.6 Maximum Flow (l/s) 17.3 20.8 24.8 30.7 30.7 30.7 38 38

Free-Cooler

Number of Coils 11111111 Fin series (Fins/ft) 152 152 122 122 152 152 152 152 Number of Rows 44665555 Water Storage (l) 265 481 538 520 531 531 806 806

(Evap+Free-Cooler)

Condenser

Number of Coils 22222222 Fin series (Fins/ft) 192 192 192 192 192 192 192 192 Number of Rows 3/3 2/2 3/3 3/3 3/3 3/3 3/3 3/3

Condenser Fans

Quantity (1) 3/3 3/3 3/3 4/4 5/4 5/5 6/5 6/6 Diameter (mm) 762 762 762 762 762 762 762 762 Total Air Flow (m3/s) 17.9/13.0 21.6/15.7 20.4/14.7 23.5/17.2 28.4/20.6 29/21.2 34.2/24.8 34.7/25.4 Nominal Speed (rpm) 935/740 935/740 935/740 935/740 935/740 935/740 935/740 935/740 Motor kW (kW) 1.7/0.85 1.7/0.85 1.7/0.85 1.7/0.85 1.7/0.85 1.7/0.85 1.7/0.85 1.7/0.85

Min Starting/ (°C) -18 -18 -18 -18 -18 -18 -18 -18 Oper Ambient(2)

General Unit

Refrigerant HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a No. Of independent 22222222

Refrigerant Circuits % Min. Load (3) 17 17 17 17 17 17 17 17

Weight. Capacities & Dimensions

Refrigerant Charge (1) (kg) 24/24 30/32 35/36 36/37 44/48 44/48 61/59 61/61 Oil Charge (1) (l) 6/6 7/7 9/9 10/10 10/10 10/10 15/11 15/15 Operating Weight (4) (kg) 3685 4492 5291 5446 6296 6241 7884 7969 Shipping Weight (4) (kg) 3300 3740 4530 4720 5560 5505 6665 6750 Length (mm) 3900 4850 4850 4850 5770 5770 6810 6810 Width (mm) 2420 2420 2420 2420 2420 2420 2460 2460 Height (mm) 2605 2605 2605 2605 2645 2645 2745 2745 Water Connection (mm) 139.7 139.7 139.7 139.7 139.7 139.7 168.3 168.3

Diameter Water Connection Type Victaulic Victaulic Victaulic Victaulic Victaulic Victaulic Victaulic 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

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.

RTAD-SVX01E-E4 17

General Information

Table 18 - General Data RTAD FC High Efficiency

Unit Size 085 100 115 125 145 150

Number of Compressors 222222 Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85

Evaporator

Evaporator Model EG 140 EG 170 EG 200 EG 200 EG 250 EG 250 Water Storage (l) 270 222 204 204 415 415 Minimum Flow (l/s) 6 7.3 8.8 8.8 11.6 11.6 Maximum Flow (l/s) 20.8 24.8 30.7 30.7 38 38

Free-Cooler

Number of Coils 111111 Fin series (Fins/ft) 152 122 152 152 152 152 Number of Rows 465555 Water Storage (l) 481 538 531 531 806 806

(Evap+Free-Cooler)

Condenser

Number of Coils 222222 Fin series (Fins/ft) 192 192 192 192 192 192 Number of Rows 3/3 3/3 3/3 3/3 3/3 3/3

Condenser Fans

Quantity (1) 3/3 4/4 4/4 5/5 6/5 6/6 Diameter (mm) 762 762 762 762 762 762 Total Air Flow (m3/s) 20.8/15.1 23.5/17.2 26/18.9 28.9/21.2 34.1/24.8 34.7/25.4 Nominal Speed (rpm) 935/740 935/740 935/740 935/740 935/740 935/740 Motor kW (kW) 1.7/0.85 1.7/0.85 1.7/0.85 1.7/0.85 1.7/0.85 1.7/0.85

Min Starting/ (°C) -18 -18 -18 -18 -18 -18 Oper Ambient (2)

General Unit Refrigerant HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a No. Of independent 222222

Refrigerant Circuits % Min. Load (3) 17 17 17 17 17 17

Weight. Capacities & Dimensions

Refrigerant Charge (1) (kg) 32/34 35/36 42/45 42/45 59/61 59/61 Oil Charge (1) (l) 6/6 7/7 10/10 10/10 11/11 11/11 Operating Weight (4) (kg) 4627 5106 5905 6000 7834 7889 Shipping Weight (4) (kg) 3875 4345 5170 5265 6615 6670 Length (mm) 4850 4850 5770 5770 6810 6810 Width (mm) 2420 2420 2420 2420 2460 2460 Height (mm) 2605 2605 2645 2645 2745 2745 Water Connection (mm) 139.7 139.7 139.7 139.7 168.3 168.3

Diameter Water Connection Type Victaulic Victaulic Victaulic Victaulic Victaulic Victaulic

18 RTAD-SVX01E-E4

General Information

Table 19 - General Data RTAD Heat Recovery Standard

Unit Size 085 100 115 125 145 150 165 180

Number of Compressors 22222222 Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85 100/85 100/100

Evaporator

Evaporator Model EG120 EG140 EG170 EG200 EG200 EG200 EG250 EG250 Water Storage (l) 106 269 223 204 204 204 415 415 Minimum Flow (l/s) 4.1 6 7.3 8.8 8.8 8.8 11.6 11.6 Maximum Flow (l/s) 17.3 20.8 24.8 30.7 30.7 30.7 38.0 38.0 Water Connection Type Victaulic Water Connection (inch-mm) 6" - 168.3 6" - 168.3 6" - 168.3 6" - 168.3 6" - 168.3 6" - 168.3 6" - 168.3

Diameter

Heat Recovery Heat-Exchanger

Type Brazed Plates Water connection type Victaulic

PHR

Connection diameter (inch-mm) 2" - 60.3 2" - 60.3 2" - 60.3 2" - 60.3 2" - 60.3 2" - 60.3 2" - 60.3 2" - 60.3 Water Storage capacity (l) 8 8 9 9 11 11 12 12

THR

Connection diameter (inch-mm) -

2" - 60.3 2" - 60.3 2" - 60.3 3" O.D. - 3" O.D. - 3" O.D. - 3" O.D. -

76.1 76.1 76.1 76.1

Water Storage capacity (l) - 10 14 14 16 16 19 19

Condenser

Number of Coils 22222222 Fin series (Fins/ft) 192 192 192 192 192 192 192 192 Number of Rows 3/3 2/2 3/3 3/3 3/3 3/3 3/3 3/3

Condenser Fans

Quantity (1) 3/3 3/3 3/3 3/3 5/4 5/5 6/5 6/6 Diameter (mm) 762 762 762 762 762 762 762 762 Total Air Flow (m3/s) 23.4 28.5 27.0 27.0 37.0 39.0 44.9 46.8 Nominal Speed (rpm) 930 930 930 930 930 930 930 930 Motor kW (kW) 1.72 1.72 1.72 1.72 1.72 1.72 1.72 1.72

Min Starting/Oper Ambient (2)

PHR (°C)00000000 THR (°C) -18 -18 -18 -18 -18 -18 -18 -18

General Unit

Refrigerant HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a No. Of independent 22222222

Refrigerant Circuits % Min. Load (3) 17 17 17 17 17 17 17 17

Weight. Capacities & Dimensions

PHR

Refrigerant Charge (1) (kg) 26/26 33/35 38/39 39/40 47/51 47/51 65/63 65/65 Oil Charge (1) (l) 6/6 7/7 9/9 10/10 10/10 10/10 15/11 15/15 Operating Weight (4) (kg) 2736 3176 3635 3650 4345 4605 5535 5622 Shipping Weight (4) (kg) 2622 2899 3403 3437 4130 4390 5108 5195

THR

Refrigerant Charge (1) (kg) - 55 / 52 67 / 64 68 / 64 86 / 84 86 / 84 100 / 95 100 / 98 Oil Charge (1) (l) - 5 / 4 8 / 7 8 / 7 8 / 7 8 / 7 13 / 7 13 / 12 Operating Weight (4) (kg) - 3347 3833 3848 4615 4875 5806 5891 Shipping Weight (4) (kg) - 3061 3589 3623 4382 4642 5359 5444

Dimensions

Length (mm) 3507 4426 4426 4426 5351 5351 6370 6370 Width (mm) 2260 2260 2260 2260 2260 2260 2260 2260 Height (mm) 2095 2095 2095 2095 2115 2115 2215 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

5"1/2 O.D.-

139.7

RTAD-SVX01E-E4 19

General Information

Table 20 - General Data RTAD Heat Recovery High Efficiency

Unit Size 085 100 115 125 145 150

Number of Compressors 222222 Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85

Evaporator

Evaporator Model EG140 EG170 EG200 EG200 EG250 EG250 Water Storage (l) 269 223 204 204 415 415 Minimum Flow (l/s) 6 7.3 8.8 8.8 11.6 11.6 Maximum Flow l/s) 20.8 24.8 30.7 30.7 38.0 38.0 Water Connection Type Victaulic Water Connection (inch-mm) 6" - 168.3 6" - 168.3 6" - 168.3 6" - 168.3 6" - 168.3 6" - 168.3

Diameter

Heat Recovery Heat-Exchanger

Type Brazed Plates Water connection type Victaulic

PHR

Connection diameter (inch-mm) 2" - 60.3 2" - 60.3 2" - 60.3 2" - 60.3 2" - 60.3 2" - 60.3 Water Storage capacity (l) 88991111

THR

Connection diameter (inch-mm) 2" - 60.3 2" - 60.3 2" - 60.3 2" - 60.3 3" O.D. - 76.1 3" O.D. - 76.1 Water Storage capacity (l) 10 10 14 14 16 16

Condenser

Number of Coils 222222 Fin series (Fins/ft) 192 192 192 192 192 192 Number of Rows 3/3 3/3 3/3 3/3 3/3 3/3

Condenser Fans

Quantity (1) 3/3 4/4 4/4 5/5 6/5 6/6 Diameter (mm) 762 762 762 762 762 762 Total Air Flow (m3/s) 27.0 31.2 35.0 39.0 44.9 46.8 Nominal Speed (rpm) 930 930 930 930 930 930 Motor kW (kW) 1.72 1.72 1.72 1.72 1.72 1.72

Min Starting/Oper Ambient (2)

PHR (°C) 000000 THR (°C) -18 -18 -18 -18 -18 -18

General Unit

Refrigerant HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a No. Of independent 222222

Refrigerant Circuits % Min. Load (3) 17 17 17 17 17 17

Weight. Capacities & Dimensions

PHR

Refrigerant Charge (1) (kg) 35/37 38/39 45/48 45/48 63/65 63/65 Oil Charge (1) (l) 6/6 7/7 10/10 10/10 11/11 11/11 Operating Weight (4) (kg) 3311 3441 3984 4079 5474 5529 Shipping Weight (4) (kg) 2375 2504 3045 3140 4532 4587

THR

Refrigerant Charge (1) (kg) 63 / 60 65 / 62 86 / 84 86 / 84 97 / 95 97 / 95 Oil Charge (1) (l) 5 / 4 5 / 4 8 / 7 8 / 7 8 / 7 8 / 7 Operating Weight (4) (kg) 3494 3624 4238 4333 5731 5786 Shipping Weight (4) (kg) 3208 3384 4013 4108 5287 5342

Dimensions

Length (mm) 4426 4426 5351 5351 6370 6370 Width (mm) 2260 2260 2260 2260 2260 2260 Height (mm) 2095 2095 2115 2115 2215 2215

20 RTAD-SVX01E-E4

General Information

Table 21 - General Data RTAD Heat Recovery Standard Low Noise

Unit Size 085 100 115 125 145 150 165 180

Number of Compressors 22222222 Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85 100/85 100/100

Evaporator

Diameter

Heat Recovery Heat-Exchanger

Type Brazed Plates Water connection type Victaulic

PHR

Connection diameter (inch-mm) 2" - 60.3 2" - 60.3 2" - 60.3 2" - 60.3 2" - 60.3 2" - 60.3 2" - 60.3 2" - 60.3 Water Storage capacity (l) 889911111212

THR

Connection diameter (inch-mm) -

2" - 60.3 2" - 60.3 2" - 60.3 3" O.D. - 3" O.D. - 3" O.D. - 3" O.D. -

76.1 76.1 76.1 76.1

Water Storage capacity (l) - 10 14 14 16 16 19 19

Condenser

Number of Coils 22222222 Fin series (Fins/ft) 192 192 192 192 192 192 192 192 Number of Rows 3/3 2/2 3/3 3/3 3/3 3/3 3/3 3/3

Condenser Fans

Quantity (1) 3/3 3/3 3/3 3/3 5/4 5/5 6/5 6/6 Diameter (mm) 762 762 762 762 762 762 762 762 Total Air Flow (m3/s) 18.1 22.4 21.0 21.0 28.7 30.1 34.7 36.2 Nominal Speed (rpm) 750 750 750 750 750 750 750 750 Motor kW (kW) 1.23 1.23 1.23 1.23 1.23 1.23 1.23 1.23

Min Starting/Oper Ambient (2)

PHR (°C)00000000 THR (°C) -18 -18 -18 -18 -18 -18 -18 -18

General Unit

Refrigerant HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a No. Of independent 22222222

Refrigerant Circuits % Min. Load (3) 17 17 17 17 17 17 17 17

Weight. Capacities & Dimensions

PHR

Refrigerant Charge (1) (kg) 26/26 33/35 38/39 39/40 47/51 47/51 65/63 65/65 Oil Charge (1) (l) 6/6 7/7 9/9 10/10 10/10 10/10 15/11 15/15 Operating Weight (4) (kg) 2836 3276 3735 3750 4445 4705 5635 5722 Shipping Weight (4) (kg) 2082 2520 2978 2991 3686 3946 4873 4960

THR

Refrigerant Charge (1) (kg) - 55 / 52 67 / 64 68 / 64 86 / 84 86 / 84 100 / 95 100 / 98 Oil Charge (1) (l) - 5 / 4 8 / 7 8 / 7 8 / 7 8 / 7 13 / 7 13 / 12 Operating Weight (4) (kg) - 3447 3933 3948 4715 4975 5906 5991 Shipping Weight (4) (kg) - 3161 3689 3723 4482 4742 5459 5544

Dimensions

Length (mm) 3507 4426 4426 4426 5351 5351 6370 6370 Width (mm) 2260 2260 2260 2260 2260 2260 2260 2260 Height (mm) 2095 2095 2095 2095 2115 2115 2215 2215

5"1/2 O.D.-

139.7

Table 22 - General Data RTAD Heat Recovery High Efficiency Low Noise

Unit Size 085 100 115 125 145 150

Number of Compressors 222222 Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85

Evaporator

Evaporator Model EG140 EG170 EG200 EG200 EG250 EG250 Water Storage (l) 269 223 204 204 415 415 Minimum Flow (l/s) 6 7.3 8.8 8.8 11.6 11.6 Maximum Flow l/s) 20.8 24.8 30.7 30.7 38 38 Water Connection Type Victaulic Water Connection (inch-mm) 6" - 168.3 6" - 168.3 6" - 168.3 6" - 168.3 6" - 168.3 6" - 168.3

Diameter

Heat Recovery Heat-Exchanger

Type Brazed Plates Water connection type Victaulic

PHR

Connection diameter 2" - 60.3 2" - 60.3 2" - 60.3 2" - 60.3 2" - 60.3 2" - 60.3 Water Storage capacity (l) 88991111

THR

Connection diameter (inch-mm) 2" - 60.3 2" - 60.3 2" - 60.3 2" - 60.3 3" O.D. - 76.1 3" O.D. - 76.1 Water Storage capacity (l) 10 10 14 14 16 16

Condenser

Number of Coils 222222 Fin series (Fins/ft) 192 192 192 192 192 192 Number of Rows 3/3 3/3 3/3 3/3 3/3 3/3

Condenser Fans

Quantity (1) 3/3 4/4 4/4 5/5 6/5 6/6 Diameter (mm) 762 762 762 762 762 762 Total Air Flow (m3/s) 21.0 24.1 27.2 30.1 34.7 36.2 Nominal Speed (rpm) 750 750 750 750 750 750 Motor kW (kW) 1.23 1.23 1.23 1.23 1.23 1.23

Min Starting/Oper Ambient (2)

PHR (°C) 000000 THR (°C) -18 -18 -18 -18 -18 -18

General Unit

Refrigerant HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a HFC 134a No. Of independent 222222

Refrigerant Circuits % Min. Load (3) 17 17 17 17 17 17

Weight. Capacities & Dimensions

PHR

Refrigerant Charge (1) (kg) 35/37 38/39 45/48 45/48 63/65 63/65 Oil Charge (1) (l) 6/6 7/7 10/10 10/10 11/11 11/11 Operating Weight (4) (kg) 3411 3541 4084 4179 5574 5629 Shipping Weight (4) (kg) 2655 2784 3325 3420 4812 4867

THR

Refrigerant Charge (1) (kg) 63 / 60 65 / 62 86 / 84 86 / 84 97 / 95 97 / 95 Oil Charge (1) (l) 5 / 4 5 / 4 8 / 7 8 / 7 8 / 7 8 / 7 Operating Weight (4) (kg) 3594 3724 4338 4433 5831 5886 Shipping Weight (4) (kg) 3308 3484 4113 4208 5387 5442

Dimensions

Length (mm) 4426 4426 5351 5351 6370 6370 Width (mm) 2260 2260 2260 2260 2260 2260 Height (mm) 2095 2095 2115 2115 2215 2215

RTAD-SVX01E-E4 21RTAD-SVX01E-E4 21

General Information

22 RTAD-SVX01E-E4

General Information

The below hydraulic module operating weight must be added to the RTAD operating weight.

Table 23 - Hydraulic module additional operating weight - SI units (kg)

RTAD 115 HE - RTAD 125 HE RTAD 145 SE - RTAD 150 SE Expansion vessel

Pump type Pump model Without 50 litres 80 litres

LRN 208-13/5.5 - LRN 208-14/7.5 400 460 500 SIL 208-16/11 - SIL 208-17/15 455 515 555 JRN 208-13/5.5 - JRN 208-14/7.5 490 550 590 SIL 208-16/11 - SIL 208-17/15 600 660 700

RTAD 145 HE - RTAD 150 HE RTAD 165 SE - RTAD 180 HE Expansion vessel

LRN 208-13/5.5 - LRN 208-14/7.5 510 570 610 SIL 208-16/11 - SIL 208-17/15 565 625 665 JRN 208-13/5.5 - JRN 208-14/7.5 600 660 700 SIL 208-16/11 - SIL 208-17/15 710 770 810

Hydraulic module addtional operating weight - English units (lbs)

RTAD 115 HE - RTAD 125 HE RTAD 145 SE - RTAD 150 SE Expansion vessel

Pump type Pump model Without 50 litres 80 litres

LRN 208-13/5.5 - LRN 208-14/7.5 882 1014 1102 SIL 208-16/11 - SIL 208-17/15 1003 1135 1224 JRN 208-13/5.5 - JRN 208-14/7.5 1080 1213 1301 SIL 208-16/11 - SIL 208-17/15 1323 1455 1543

RTAD 145 HE - RTAD 150 HE RTAD 165 SE - RTAD 180 HE Expansion vessel

LRN 208-13/5.5 - LRN 208-14/7.5 1124 1257 1345 SIL 208-16/11 - SIL 208-17/15 1246 1378 1466 JRN 208-13/5.5 - JRN 208-14/7.5 1323 1455 1543 SIL 208-16/11 - SIL 208-17/15 1565 1698 1786

Single

Dual

Single

Dual

RTAD-SVX01E-E4 23

General Information

Unit Dimensions

Figure 2 - Unit Dimensions and Minimum Recommended Clearances

Table 24

Note: Size 085 does not exist for Total Heat Recovery option but HE version is available

Unit Dimensions (mm) Minimum clearances (mm)

Length Width Height A B C

Unit Size Standard, Partial Heat Recovery, and Total Heat Recovery

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

Free Cooling

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

24 RTAD-SVX01E-E4

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.

❏ 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-SVX01E-E4 25

Installation - Mechanical

Figure 3 - Rigging the Unit

Table 25

Note: Size 085 does not exist for Total Heat Recovery option but HE version is available (1) Maximum weight with all options

Unit Size Lengths (mm) Maximum weight (kg)(1)

A B L H max W Aluminium Copper

Standard

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

Partial Heat Recovery

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

Total Heat Recovery

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

Free Cooling

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 RTAD 145-150 SE 4000 2400 5351 2215 2260 5265 5675 RTAD 165-180 SE 4000 2400 6370 2215 2260 6145 6655 RTAD 115-125 HE 4000 2400 5351 2215 2260 4740 5150 RTAD 145-150 HE 4000 2400 6370 2215 2260 6145 6655

26 RTAD-SVX01E-E4

Installation - Mechanical

Location Requirements

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.

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.

Storage

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.

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.

RTAD-SVX01E-E4 27

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 1-23 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.

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.

Unit Water 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.

Unit Piping

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 Victaulic

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.

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.

28 RTAD-SVX01E-E4

Installation - Mechanical

RTAD-SVX01E-E4 29

Installation - Mechanical

Leaving Chilled Water Piping

❏ 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

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.

Entering 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.

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.

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.

30 RTAD-SVX01E-E4

Installation - Mechanical

Figure 4 - Evaporator Water Pressure Drop RTAD

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

kPa

l/s

Installation - Mechanical

RTAD-SVX01E-E4 31

Figure 5 - RTAD 115HE - 125HE - 145SE - 150SE Single pump available static pressure

1 = LRN 208-13/5.5 2 = LRN 208-14/7.5 3 = SIL 208-16/11 4 = SIL 208-17/15

Figure 6 - RTAD 115HE - 125HE - 145SE - 150SE Dual pump available static pressure

1 = JRN 208-13/5.5 2 = JRN 208-14/7.5 3 = DIL 208-16/11 4 = DIL 208-17/15

kPa

l/s

kPa

l/s

32 RTAD-SVX01E-E4

Installation - Mechanical

Figure 7 - RTAD 145HE - 150HE - 165SE - 180SE Single Pump Available Static Pressure

1 = LRN 208-13/5.5 2 = LRN 208-14/7.5 3 = SIL 208-16/11 4 = SIL 208-17/15

Figure 8 - RTAD 145HE - 150HE - 165SE - 180SE Dual pump Available static pressure

1 = JRN 208-13/5.5 2 = JRN 208-14/7.5 3 = DIL 208-16/11 4 = DIL 208-17/15

kPa

l/s

kPa

l/s

RTAD-SVX01E-E4 33

Installation - Mechanical

Figure 9 - RTAD 115HE - 125HE - 145SE - 150SE Pump Capacity Curve Single Pump

1 = LRN 208-13/5.5 2 = LRN 208-14/7.5 3 = SIL 208-16/11 4 = SIL 208-17/15

Figure 10 - RTAD 115HE - 125HE - 145SE - 150SE Pump Capacity Curve Dual Pump

1 = LRN 208-13/5.5 2 = LRN 208-14/7.5 3 = SIL 208-16/11 4 = SIL 208-17/15

l/s

34 RTAD-SVX01E-E4

Installation - Mechanical

Figure 11 - RTAD 145HE - 150HE - 165SE - 180SE Pump Current Curve Single Pump

1 = JRN 208-13/5.5 2 = JRN 208-14/7.5 3 = DIL 208-16/11 4 = DIL 208-17/15

Figure 12 - RTAD 145HE - 150HE - 165SE - 180SE Pump Current Curve Dual Pump

1 = JRN 208-13/5.5 2 = JRN 208-14/7.5 3 = DIL 208-16/11 4 = DIL 208-17/15

l/s

0 5 10 15 20 25 30 35 40 45

RTAD-SVX01E-E4 35

Installation - Mechanical

Figure 13 - Water Pressure Drop RTAD Free Cooling - Compressor Mode

Figure 14 - 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

kPa

l/s

kPa

l/s

36 RTAD-SVX01E-E4

Installation - Mechanical

Figure 15 - Condenser Water Pressure Drop RTAD Partial Heat Recovery - Heating Mode

1 = 085-100 2 = 115-125 3 = 145-150 4 = 165-180

Figure 16 - Condenser Water Pressure Drop RTAD Total Heat Recovery - Heating Mode

1 = 085-100 2 = 115-125 3 = 145-150 4 = 165-180

l/s

kPa

l/s

kPa

Figure 17 - 3-way Valve Pressure Drop RTAD Total Heat Recovery - Heating mode

1 = 085-100-115-125 2 = 145-150-165-180

Figure 18 - Suggested piping for typical RTAD Standard and Heat Recovery evaporator

without hydraulic module

1. Gate valve

2. Water strainer

3. Thermometer (user option)

4. Vibration eliminator

5. Relief valve

6. Valved pressure gauge

7. Ve n t

8. Drain

9. Flow switch (chilled water flow)

10.Balancing valve

kPa

l/s

RTAD-SVX01E-E4 37

Installation - Mechanical

38 RTAD-SVX01E-E4

Installation - Mechanical

Figure 19 - Suggested piping for typical RTAD with hydraulic module

Figure 20 - Suggested piping for typical RTAD Free Cooling evaporator

1. Gate valve

2. Water strainer

3. Thermometer (user option)

4. Vibration eliminator

5. Relief valve

6. Valved pressure gauge

7. V e n t

8. Drain

9. Flow switch (chilled water flow)

10.Balancing valve

1. Gate valve

2. Water strainer

3. Thermometer (user option)

4. Vibration eliminator

5. Relief valve

6. Pressure gauge

7. Ve n t

8. Drain

9. Flow switch (chilled water flow) Trane-

supplied

10.Balancing valve

11. Pressure port

12. Expansion vessel (option)

RTAD-SVX01E-E4 39

Installation - Mechanical

Figure 21 - Suggested condenser piping for typical RTAD PHR

Figure 22 - 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. Ve n t

8. Drain

9. Flow switch (warm water flow)

10.Balancing valve

11. Clean out tee

A. Trane-supplied

1. Gate valve

2. Water strainer

3. Thermometer (user option)

4. Vibration eliminator

5. Relief valve

6. Valved pressure gauge

7. Ve n t

8. Drain

9. Flow switch (warm water flow)

10.Balancing valve

11. Clean out tee

40 RTAD-SVX01E-E4

Installation - Mechanical

Figure 23 - 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

7. Ve n t

8. Drain

9. Flow switch (warm water flow)

10.Balancing valve

11. Clean out tee

RTAD-SVX01E-E4 41

Installation - Mechanical

Freeze Protection

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.

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.

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.

Freeze protection with hydraulic module and dual pump

To protect the chiller against freezing, there are 5 means of protection:

• Using the proper glycol percentage in the water (no risk of damage due to power failure)

• Draining the unit during the cold season. However, be aware of the corrosion process when drained.

• Using the heat tape protection (protect the unit down to -18°C)

• Using freeze protection by pump activation.

• Using pump activation and heat protection one being a safety for the other.

CAUTION!

When using the freeze protection by pump activation during the cold season, water must be able to circulate freely. Check that no closure valve or other device might block waterflow.

Note: For dual pump hydraulic model,

activation of the heat tape is not done through the thermostat but by the pump controller.

Single pump hydraulic module does not provide protection by pump activation and require the thermostat.

Water Pressure Gauges

Install field-supplied pressure components as shown in Figure 18-23. 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.

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 18-23. 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.

42 RTAD-SVX01E-E4

Installation - Electrical

% = % ethylene glycol °C = Brine temperature 1 = Liquid 2 = Freezing without burst effect 3 = Freezing with burst effect

Leaving water temperature (°C)

Glycol (%)

Using glycol with hydraulic module

If the glycol brine percentage is not at the recommended percentage (greyed area), corrosion inhibitor present in the glycol may not be efficient enough.

For instance, not only a glycol protection of 15% will only provide protection to the unit against freezing down to -5°C but also it might generate additional corrosion that could damage the pumps mechanical seals.

CAUTION!

Some corrosion inhibitors may be harmful to the mechanical seal or to the cast iron of the pump.

In case of application with negative temperature at the evaporator or usage of another type of fluid, please contact your local Trane sales engineer. A relief valve is located at pump suction limiting water circuit pressure at 4 bar. Nitrogen pressure inside of the expansion tank must be equal to the geometric height of the installation + 0.5 bar. In order to avoid air entering in the water circuit, expansion tank must be inflated with nitrogen. Pressure must be checked yearly. For a good pump operation, pump suction pressure must be between 0.5 and 3.5 bar when pump runs.

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.

°C

Installation - Electrical

General Recommendations

WARNING! The warning label shown in Figure 24 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.

Figure 24 - Warning Label

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.

RTAD-SVX01E-E4 43

44 RTAD-SVX01E-E4

Installation - Electrical

Table 26 - Unit Wiring 400/3/50 - Standard cooling unit / Partial Heat Recovery and Total Heat Recovery units

Unit Size Standard

085 1 242 255 0.90 250 6 x 125 0.217 100 1 282 306 0.88 400 6 x 160 0.217 115 1 323 359 0.89 400 6 x 200 0.217 125 1 387 425 0.90 500 6 x 250 0.217 145 1 437 471 0.90 500 6 x 250 0.217 150 1 477 502 0.89 630 6 x 250 0.217 165 1 527 570 0.89 630 315 + 250 0.217 180 1 576 608 0.89 630 6 x 315 0.217

High Efficiency

085 1 242 255 0.90 250 6 x 125 0.217 100 1 291 315 0.88 400 6 x 160 0.217 115 1 332 368 0.89 400 6 x 200 0.217 125 1 405 443 0.90 500 6 x 250 0.217 145 1 446 480 0.90 500 6 x 250 0.217 150 1 486 511 0.89 630 6 x 250 0.217

High Ambient

085 1 242 255 0.90 400 6 x 160 0.217 100 1 291 315 0.88 400 6 x 200 0.217 115 1 332 368 0.89 400 6 x 250 0.217 125 1 405 443 0.90 500 6 x 250 0.217 145 1 446 480 0.90 630 6 x 250 0.217 150 1 486 511 0.89 630 6 x 315 0.217 165 1 527 570 0.89 630 400 + 315 0.217 180 1 576 608 0.89 800 6 x 400 0.217

Standard Low Noise

085 1 230 243 0.90 250 6 x 125 0.217 100 1 270 294 0.88 400 6 x 160 0.217 115 1 311 347 0.89 400 6 x 200 0.217 125 1 375 413 0.90 500 6 x 250 0.217 145 1 419 453 0.90 500 6 x 250 0.217 150 1 457 482 0.89 630 6 x 250 0.217 165 1 505 548 0.89 630 315 + 250 0.217 180 1 552 584 0.89 630 6 x 315 0.217

High Efficiency Low Noise

085 1 230 243 0.90 250 6 x 125 0.217 100 1 275 299 0.88 400 6 x 160 0.217 115 1 316 352 0.89 400 6 x 200 0.217 125 1 385 423 0.90 500 6 x 250 0.217 145 1 424 458 0.90 500 6 x 250 0.217 150 1 462 487 0.89 630 6 x 250 0.217

Standard Low Noise with Night Noise Set Back option

085 1 226 238 0.90 250 6 x 125 0.217 100 1 270 295 0.88 400 6 x 160 0.217 115 1 312 348 0.89 400 6 x 200 0.217 125 1 376 414 0.90 500 6 x 250 0.217 145 1 417 451 0.90 500 6 x 250 0.217 150 1 453 478 0.89 630 6 x 250 0.217 165 1 503 546 0.89 630 315 + 250 0.217 180 1 548 580 0.89 630 6 x 315 0.217

High Efficiency Low Noise with Night Noise Set Back option

085 1 231 244 0.90 250 6 x 125 0.217 100 1 270 295 0.88 400 6 x 160 0.217 115 1 317 353 0.89 400 6 x 200 0.217 125 1 381 419 0.90 500 6 x 250 0.217 145 1 381 456 0.90 500 6 x 250 0.217 150 1 381 483 0.89 630 6 x 250 0.217

Nbr of Power

Connections

Maximum

Amps (1)

Starting

Amps (2)

Power

Factor (5)

Disconnect

Switch Size (A)

Compressor

Fuse Size (A)

Evaporator

heater (kW)

Installation - Electrical

Table 27 - Unit Wiring 400/3/50/ cont - Standard cooling unit / Partial Heat Recovery and Total Heat Recovery units

Unit Size Standard with High External Static Pressure

085 1 231 244 0.90 250 6 x 125 0.217 100 1 278 302 0.88 400 6 x 160 0.217 115 1 319 355 0.89 400 6 x 200 0.217 125 1 383 421 0.90 500 6 x 250 0.217 145 1 427 461 0.90 500 6 x 250 0.217 150 1 463 488 0.89 630 6 x 250 0.217 165 1 516 559 0.89 630 315 + 250 0.217 180 1 561 593 0.89 630 6 x 315 0.217

High Efficiency with High External Static Pressure

085 1 239 251 0.90 250 6 x 125 0.217 100 1 278 302 0.88 400 6 x 160 0.217 115 1 327 363 0.89 400 6 x 200 0.217 125 1 391 429 0.90 500 6 x 250 0.217 145 1 435 469 0.90 500 6 x 250 0.217 150 1 471 496 0.89 630 6 x 250 0.217

Table 28 - Motor Data 400/3/50 - Standard cooling unit / Partial Heat Recovery and Total Heat Recovery units

(400V) Unit Size Qty Ckt 1 Ckt 2 Ckt 1 Ckt 2 Ckt 1 Ckt 2 Qty kW FLA size (A) VA A Standard

085 2 80 80 106 106 144 144 6 2.05 4.5 3 x 50 1600 4 100 2 95 95 125 125 180 180 6 2.05 4.5 3 x 50 1600 4 115 2 111 111 14 6 146 2 1 7 217 6 2 . 0 5 4.5 3 x 5 0 1 6 0 0 4 125 2 135 135 178 178 259 259 6 2.05 4.5 3 x 50 1600 4 145 2 162 135 214 178 291 259 9 2.05 4.5 3 x 63 1600 4 150 2 162 162 214 214 291 291 10 2.05 4.5 3 x 63 1600 4 165 2 196 162 259 214 354 291 11 2.05 4.5 3 x 63 1600 4 180 2 196 196 259 259 354 354 12 2.05 4.5 3 x 63 1600 4

High Efficiency

085 2 80 80 106 106 144 144 6 2.05 4.5 3 x 50 1600 4 100 2 95 95 125 125 180 180 8 2.05 4.5 3 x 50 1600 4 115 2 111 111 14 6 146 2 1 7 217 8 2 . 0 5 4.5 3 x 5 0 1 6 0 0 4 125 2 135 135 178 178 259 259 10 2.05 4.5 3 x 50 1600 4 145 2 162 135 214 178 291 259 11 2.05 4.5 3 x 63 1600 4 150 2 162 162 214 214 291 291 12 2.05 4.5 3 x 63 1600 4

Standard Low Noise

085 2 80 80 106 106 144 144 6 1.30 2.5 3 x 50 1600 4 100 2 95 95 125 125 180 180 6 1.30 2.5 3 x 50 1600 4 115 2 111 111 14 6 146 2 1 7 217 6 1. 3 0 2 . 5 3 x 5 0 1 6 0 0 4 125 2 135 135 178 178 259 259 6 1.30 2.5 3 x 50 1600 4 145 2 162 135 214 178 291 259 9 1.30 2.5 3 x 63 1600 4 150 2 162 162 214 214 291 291 10 1.30 2.5 3 x 63 1600 4 165 2 196 162 259 214 354 291 11 1.30 2.5 3 x 63 1600 4 180 2 196 196 259 259 354 354 12 1.30 2.5 3 x 63 1600 4

High Efficiency Low Noise option

085 2 80 80 106 106 144 144 6 1.30 2.5 3 x 50 1600 4 100 2 95 95 125 125 180 180 8 1.30 2.5 3 x 50 1600 4 115 2 111 111 14 6 146 2 1 7 217 8 1. 3 0 2 . 5 3 x 5 0 1 6 0 0 4 125 2 135 135 178 178 259 259 10 1.30 2.5 3 x 50 1600 4 145 2 162 135 214 178 291 259 11 1.30 2.5 3 x 63 1600 4 150 2 162 162 214 214 291 291 12 1.30 2.5 3 x 63 1600 4

Standard Low Noise with Night Noise Set Back option

085 2 80 80 106 106 144 144 4 1.05 2.6 3 x 50 1600 4 100 2 95 95 125 125 180 180 6 1.05 2.6 3 x 50 1600 4 115 2 111 111 14 6 146 2 1 7 217 6 1. 0 5 2 . 6 3 x 5 0 1 6 0 0 4 125 2 135 135 178 178 259 259 6 1.05 2.6 3 x 50 1600 4 145 2 162 135 214 178 291 259 8 1.05 2.6 3 x 63 1600 4 150 2 162 162 214 214 291 291 8 1.05 2.6 3 x 63 1600 4 165 2 196 162 259 214 354 291 10 1.05 2.6 3 x 63 1600 4 180 2 196 196 259 259 354 354 10 1.05 2.6 3 x 63 1600 4

Nbr of Power

Connections

Maximum

Amps (1)

Starting

Amps (2)

Power

Factor (5)

Disconnect

Switch Size (A)

Compressor

Fuse Size (A)

Evaporator

heater (kW)

RLA Amps Max Amps (3) Starting Amps (4) Fans fuse

Compressor (Each) Fans (Each) Control

RTAD-SVX01E-E4 45

46 RTAD-SVX01E-E4

Installation - Electrical

Table 29 - Motor Data 400/3/50/ cont - Standard cooling unit / Partial Heat Recovery and Total Heat Recovery units

Unit Size Qty Ckt 1 Ckt 2 Ckt 1 Ckt 2 Ckt 1 Ckt 2 Qty kW FLA size (A) VA (400V) High Efficiency Low Noise with Night Noise Set Back option

085 2 80 80 106 106 144 144 6 1.05 2.6 3 x 50 1600 4 100 2 95 95 125 125 180 180 6 1.05 2.6 3 x 50 1600 4 115 2 111 111 14 6 146 2 1 7 217 8 1. 0 5 2 . 6 3 x 5 0 1 6 0 0 4 125 2 135 135 178 178 259 259 8 1.05 2.6 3 x 50 1600 4 145 2 162 135 214 178 291 259 10 1.05 2.6 3 x 63 1600 4 150 2 162 162 214 214 291 291 10 1.05 2.6 3 x 63 1600 4

Standard with High External Static Pressure

085 2 80 80 106 106 144 144 4 2.21 3.9 3 x 50 1600 4 100 2 95 95 125 125 180 180 6 2.21 3.9 3 x 50 1600 4 115 2 111 111 14 6 146 2 1 7 217 6 2 . 2 1 3.9 3 x 5 0 1 6 0 0 4 125 2 135 135 178 178 259 259 6 2.21 3.9 3 x 50 1600 4 145 2 162 135 214 178 291 259 8 2.21 3.9 3 x 63 1600 4 150 2 162 162 214 214 291 291 8 2.21 3.9 3 x 63 1600 4 165 2 196 162 259 214 354 291 10 2.21 3.9 3 x 63 1600 4 180 2 196 196 259 259 354 354 10 2.21 3.9 3 x 63 1600 4

High Efficiency with High External Static Pressure

085 2 80 80 106 106 144 144 6 2.21 3.9 3 x 50 1600 4 100 2 95 95 125 125 180 180 6 2.21 3.9 3 x 50 1600 4 115 2 111 111 14 6 146 2 1 7 217 8 2 . 2 1 3.9 3 x 5 0 1 6 0 0 4 125 2 135 135 178 178 259 259 8 2.21 3.9 3 x 50 1600 4 145 2 162 135 214 178 291 259 10 2.21 3.9 3 x 63 1600 4 150 2 162 162 214 214 291 291 10 2.21 3.9 3 x 63 1600 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 30 - Compressor motor electrical data - 50 Hz - Free Cooling unit

Unit Size Nominal voltage Maximum unit kW Maximum RLA (1) Starting amps Power factor

(V/Ph/Hz) (kW) (A) (A)

RTAD 085 FC STD 400/3/50 149 239 251 0.90 RTAD 085 FC STD 400/3/50 149 239 251 0.90 RTAD 100 FC STD 400/3/50 169 278 302 0.88 RTAD 115 FC STD 400/3/50 199 319 355 0.89 RTAD 125 FC STD 400/3/50 244 391 429 0.90 RTAD 145 FC STD 400/3/50 268 431 465 0.90 RTAD 150 FC STD 400/3/50 291 471 496 0.89 RTAD 165 FC STD 400/3/50 294 520 563 0.89 RTAD 180 FC STD 400/3/50 352 569 601 0.89 RTAD 085 FC HE 400/3/50 149 239 251 0.90 RTAD 100 FC HE 400/3/50 174 286 310 0.88 RTAD 115 FC HE 400/3/50 204 327 363 0.89 RTAD 125 FC HE 400/3/50 249 399 437 0.90 RTAD 145 FC HE 400/3/50 273 439 473 0.90 RTAD 150 FC HE 400/3/50 296 479 504 0.89

(1) To take in account for the sizing of power cables

RLA Amps Max Amps (3) Starting Amps (4) Fans fuse

Compressor (Each) Fans (Each) Control

Installation - Electrical

RTAD-SVX01E-E4 47

Table 31 - General electrical data

Unit Size Nominal voltage Control circuit

(V/Ph/Hz) (VA)

RTAD 085 FC STD 400/3/50 150 1600 35 RTAD 100 FC STD 400/3/50 150 1600 35 RTAD 115 FC STD 400/3/50 150 1600 35 RTAD 125 FC STD 400/3/50 150 1600 35 RTAD 145 FC STD 400/3/50 150 1600 35 RTAD 150 FC STD 400/3/50 150 1600 35 RTAD 165 FC STD 400/3/50 150 1600 35 RTAD 180 FC STD 400/3/50 150 1600 35 RTAD 085 FC HE 400/3/50 150 1600 35 RTAD 100 FC HE 400/3/50 150 1600 35 RTAD 115 FC HE 400/3/50 150 1600 35 RTAD 125 FC HE 400/3/50 150 1600 35 RTAD 145 FC HE 400/3/50 150 1600 35 RTAD 150 FC HE 400/3/50 150 1600 35

Table 32 - Electrical connections

Unit Size

RTAD 085 FC STD 6 x 125 250 95 150 RTAD 100 FC STD 6 x 160 400 185 240 RTAD 115 FC STD 6 x 200 400 185 240 RTAD 125 FC STD 6 x 250 500 240 240 RTAD 145 FC STD 6 x 250 500 240 240 RTAD 150 FC STD 6 x 250 630 2 x 150 2 x 300 RTAD 165 FC STD 315 + 250 630 2 x 150 2 x 300 RTAD 180 FC STD 6 x 315 630 2 x 150 2 x 300 RTAD 085 FC HE 6 x 125 250 95 150 RTAD 100 FC HE 6 x 160 400 185 240 RTAD 115 FC HE 6 x 200 400 185 240 RTAD 125 FC HE 6 x 250 500 240 240 RTAD 145 FC HE 6 x 250 500 240 240 RTAD 150 FC HE 6 x 250 630 2 x 150 2 x 300

(1) To take in account for the sizing of power cables

Table 33 - Hydraulic module electrical data

Single or dual pump

Pump 1 Pump 2 Pump 3 Pump 4

Standard Efficiency unit

145 kW (1) 5.0 6.5 9.2 12.1 150 kW (1) 5.1 6.8 9.7 12.7 165 kW (1) 5.1 7.1 10.1 13.2 180 kW (1) 5.2 7.3 10.5 13.6

High Efficiency unit

115 kW (1) 4.7 5.9 8.3 11.0 125 kW (1) 4.9 6.4 9.1 12.0 145 kW (1) 5.0 6.6 9.3 12.2 150 kW (1) 5.1 6.8 9.7 12.6

All sizes

Maximum amps (A) 10.3 13.8 20 26.5 Power factor 0.89 0.89 0.88 0.88

(1) Power input at Eurovent conditions: Ambient temperature 35°C, water temperature 12/7°C

Crankcase heater

Compressor

(W)

Short circuit intensity

(kA)

Compressor fuse size (1)

(A)

Disconnect

switch size (1)

(A)

Minimum connecting

wire (1)

(mm²)

Maximum connecting

wire (1)

(mm²)

48 RTAD-SVX01E-E4

Installation - Electrical

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 customersupplied 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 factory-wired 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).

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 Utilization Range

400/50/3 340-460

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.

RTAD-SVX01E-E4 49

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.

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 UCMCLD 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.

50 RTAD-SVX01E-E4

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 UCM-CLD 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.

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-SVX01E-E4 51

Installation - Electrical

Figure 25 - Control wiring for pump

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 25 for details.

52 RTAD-SVX01E-E4

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 26, 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 26 - Alarm / Running / Maximum capacity relay output for the RTAD unit.

RTAD-SVX01E-E4 53RTAD-SVX01E-E4 53

Installation - Electrical

Table 34 - Alarm / Running / Maximum capacity relay output configuration

Relay output configuration

1 Relay 1 Alarm

Relay 2 Compressor running Relay 3 Maximum capacity

2 Relay 1 Circuit 1 alarm

Relay 2 Circuit 2 alarm Relay 3 Maximum capacity

3 Relay 1 Alarm

Relay 2 Circuit 1 running Relay 3 Circuit 2 running

Table 35 - Alarm / Running / Maximum capacity menu setting

1 1 YES NO NO 2 1 YES YES NO 3 1 YES YES YES 4 1 YES NO YES 5 2 YES NO NO 6 2 YES YES NO 7 2 YES YES YES 8 2 YES NO YES 9 3 YES NO NO 10 3 YES YES NO 11 3 YES YES YES 12 3 YES NO YES

Notes: MMR: Machine Manual Reset CMR: Circuit Manual Reset MAR: Machine Auto Reset CAR: Circuit Auto Reset IFW: Informational Warnings

Diagnostic that the Alarm relay(s) is active

Programmable Relay Setup Setting (service setting menu)

Relay Output Configuration (Table 26)

MMR / CMR diag.

MAR / CAR diag.

IFW diag.

54 RTAD-SVX01E-E4

Installation - Electrical

External Emergency stop (normal trip)

The Clear Language Display provides auxiliary control for a customer-specified 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.

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 6X21 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.

External circuit lockout Circuit 1

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 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.

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.

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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

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.

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 36

Table 36 - Input values vs. External

chilled-water setpoint

3.6 7.2 -10

4.6 9.2 -5

5.6 11.3 0

6.7 13.3 5

7. 7 1 5 .4 1 0

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

Resulting chilled-water setpoint (°C)

Voltage (V (dc))

Current

(mA)

56 RTAD-SVX01E-E4

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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 37 - Input values vs. external

current-limit setpoint

2.0 4.0 40

3.0 6.0 50

4.0 8.0 60

5.0 10.0 70

6.0 12.0 80

7. 0 1 4 .0 9 0

8.0 16.0 100

9.0 18.0 110

10.0 20.0 120

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.

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.

Resulting chilled-water setpoint (°C)

Voltage (V (dc))

Current

(mA)

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.

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.

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58 RTAD-SVX01E-E4

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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 00-01-64-1C- 2B-00.

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.

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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-SVN01A-EN.)

Table 38 - 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.

60 RTAD-SVX01E-E4

Installation - Electrical

Index Network Variable SNVT Type

0 nciLocation SNVT_str_asc(36) 1 nciChillerEnable SNVT_switch(95) 2 nciMinOutTm SNVT_time_sec(107) 3 nciSndHrtBt SNVT_time_sec(107) 4 nciCapacityLim SNVT_lev_percent(81) 5 nciCoolSetpt SNVT_temp_p(105) 6 nciMode SNVT_hvac_mode(108) 7 nciHeatSetpt SNVT_temp_p(105) 8 nciDefaults SNVT_switch(95) 9 nciRcvHrtBt SCPTmaxRcvTime(48) 10 nciRefrigerant UCPT_refrig_type 11 nciMfgLocation UCPT_manufacturing_location 12 nciChillerType UCPT_chiller_type 13 nciDevMajVer SCPTdevMajVer(165) 14 nciDevMinVer SCPTdevMinVer(166) 17 nviChillerEnable SNVT_switch(95) 18 nviCoolSetpt SNVT_temp_p(105) 19 nvoOnOff SNVT_switch(95) 20 nvoActiveSetpt SNVT_temp_p(105) 21 nviCapacityLim SNVT_lev_percent(81) 22 nviMode SNVT_hvac_mode(108) 23 nviHeatSetpt SNVT_temp_p(105) 24 nvoActualCap SNVT_lev_percent(81) 25 nvoCapacityLim SNVT_lev_percent(81) 26 nvoLvgChWTemp SNVT_temp_p(105) 27 nvoEntChWTemp SNVT_temp_p(105) 28 nvoEntCndWTemp SNVT_temp_p(105) 29 nvoLvgCndWTemp SNVT_temp_p(105) 30 nvoAlarmDescr SNVT_str_asc(36) 31 nvoChillerStat SNVT_chlr_status(127) 32 nviRequest SNVT_obj_request(92) 33 nvoStatus SNVT_obj_status(93)

Index Network Variable SNVT Type

34 nviTraneVar2 UNVT 35 nvoTraneVar9 UNVT 36 nvoStatusOutputs SNVT_state(83) 37 nvoCprsrsRunning SNVT_state(83) 38 nvoCondFans SNVT_state(83) 39 nvoEvapWtrPump SNVT_switch(95) 40 nvoEvapWtrFlow SNVT_switch(95) 41 nvoCondWtrPump SNVT_switch(95) 42 nvoCondWtrFlow SNVT_switch(95) 43 nvoOutdoorTemp SNVT_temp_p(105) 44 nvoUnitVoltage UNVT_3phase_volt 45 nvoEvapRfgtPrsC1 SNVT_press_f(59) 46 nvoEvapRfgtPrsC2 SNVT_press_f(59) 47 nvoEvapRfgtTmpC1 SNVT_temp_p(105) 48 nvoEvapRfgtTmpC2 SNVT_temp_p(105) 49 nvoCondRfgtPrsC1 SNVT_press_f(59) 50 nvoCondRfgtPrsC2 SNVT_press_f(59) 51 nvoCondRfgtTmpC1 SNVT_temp_p(105) 52 nvoCondRfgtTmpC2 SNVT_temp_p(105) 53 nvoAirFlowPctC1 SNVT_lev_percent(81) 54 nvoAirFlowPctC2 SNVT_lev_percent(81) 55 nvoOilTempA SNVT_temp_p(105) 56 nvoOilTempB SNVT_temp_p(105) 57 nvoOilTempC SNVT_temp_p(105) 58 nvoOilTempD SNVT_temp_p(105) 59 nvoCurrentA UNVT_3phase_current 60 nvoCurrentB UNVT_3phase_current 61 nvoCurrentC UNVT_3phase_current 62 nvoCurrentD UNVT_3phase_current 63 nvoStartsRunTmA UNVT_starts_runtime 64 nvoStartsRunTmB UNVT_starts_runtime 65 nvoStartsRunTmC UNVT_starts_runtime 66 nvoStartsRunTmD UNVT_starts_runtime

Table 39 - Network Variable List

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In many cases, the Trane userdefined types contain standard network

variable types (SNVTs) to make them easy to understand.

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.

User-defined network variable types (UNVTs)

UNVT_purge_information

Structure definition

Field in structure Byte Bit definition Description

SNVT_state Byte 0 (MSB) Bits 0-7 (MSB) Validity of bits 8-15 (1=Valid)

Bit 8 Refrigeration Circuit On (1) Bit 9 Pumping Out (1) Bit 10 Regenerating (1) Bits 11-15(LSB) Not Used

SNVT_time_f Byte 1-2 (LSB) Purge 24 Hour

Pumpout Average

UNVT_starts_runtime

Structure definition

Field in structure Definition

SNVT_count_f Compressor Starts SNVT_time_f Compressor Run Time

SUNVT_3phase_current

Structure definition

Field in structure Definition

SNVT_amp_ac L1 Current (Amps) SNVT_amp_ac L2 Current (Amps) SNVT_amp_ac L3 Current (Amps) SNVT_lev_percent L1 Current (%RLA) SNVT_lev_percent L2 Current (%RLA) SNVT_lev_percent L3 Current (%RLA)

UNVT_3phase_volt

Structure definition

Field in structure Definition

SNVT_volt_ac AB Voltage SNVT_volt_ac BC Voltage SNVT_volt_ac CA Voltage

62 RTAD-SVX01E-E4

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UNVT_refrig

Range of enumeration values

Enumeration Definition Description (reference: ARI guideline K)

0 RT_R11 R-11 (Trichlorofluoromethane) 1 RT_R12 R-12 (Dichlorodifluoromethane) 2 RT_R13 R-13 (Chlorotrifluoromethane) 3 RT_R13B1 R-13B1 (Bromotrifluoromethane) 4 RT_R14 R-14 5 RT_R21 R-21 6 RT_R22 R-22 (Chlorodifluoromethane) 7 RT_R23 R-23 (Trifluoromethane) 8 RT_R32 R-32 9 RT_R40 R-40 10 RT_R112 R-112 11 RT_R113 R-113 (Trichlorotrifluoroethane) 12 RT_R114 R-114 (Dichlorotetrafluoroethane) 13 RT_R115 R-115 14 RT_R116 R-116 15 RT_R123 R-123 (Dichlorotrifluoroethane) 16 RT_R124 R-124 (Chlorotetrafluoroethane) 17 RT_R125 R-125 18 RT_R134a R-134a (Tetrafluoroethane) 19 RT_R141B R-141B 20 RT_R142B R-142B 21 RT_R143A R-143A 22 RT_R152A R-152A 23 RT_R401A R-401A (Chlorodifluoromethane, Difluoroethane,

Chlorotetrafluoroethane)

24 RT_R401B R-401B (Chlorodifluoromethane, Difluoroethane,

Chlorotetrafluoroethane) 25 RT_R402A R-402A (Chlorodifluoromethane, Pentafluoro-ethane, Propane) 26 RT_R402B R-402B (Chlorodifluoromethane, Pentafluoro-ethane, Propane) 27 RT_R403B R-403B (Chlorodifluoromethane, Octafluoro-propane, Propane) 28 RT_R404A R-404A (Pentafluoroethane, Trifluoroethane, Tetrafluoroethane) 29 RT_R406A R-406A (Chlorodifluoroethane, Isobutane, Chlorodifluoroethane) 30 RT_R407A R-407A (Difluoromethane, Pentafluoroethane, Tetrafluoroethane) 31 RT_R407B R-407B (Difluoromethane, Pentafluoroethane, Tetrafluoroethane) 32 RT_R407C R-407C (Difluoromethane, Pentafluoroethane, Tetrafluoroethane) 33 RT_R408A R-408A (Chlorodifluoromethane, Trifluoroethane,

Pentafluoroethane) 34 RT_R409A R-409A (Chlorodifluoromethane, Chlorotetrafluo-roethane,

Chlorodifluoroethane) 35 RT_R410A R-410A (Difluoromethane, Pentafluoroethane) 36 RT_R414B R-414B (Chlorodifluoromethane, Chlorotetrafluo-roethane,

Chlorodifluoroethane, Isobutane) 37 RT_R416A R-416A (Tetrafluoroethane, Chlorotetrafluore-thane, Butane) 38 RT_R500 R-500 (Dichlorodifluoromethane, Difluoroethane) 39 RT_R502 R-502 (Chlorodifluoromethane, Chloropentafluo-roethane) 40 RT_R503 R-503 (Chlorotrifluoromethane, Trifluoromethane) 41 RT_R507 R-507 (Pentafluoroethane, Trifluoroethane) 42 RT_R508B R-508B (Trifluoromethane, Hexafluoroethane) 43 RT_R717 R-717 44-254 RT_RESERVED Reserved for future use 0xFF RT_INVALID Invalid (default)

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User-defined configuration property types

UCPT_chiller_type

Structure definition

Item Type Bytes Range and meaning

Unsigned 8-bit (enum) 1 Range of enum values in

UCPT_chiller_type

Unit capacity SNVT_power_f 4 Capacity of unit (in watts) Cooling type Unsigned 8-bit (enum) 1 0 = water-cooled 1 = air-

cooled 2-254 = unused

Number of circuits Unsigned 8-bit 1 0-2; number of circuits on

unit

Number of compressors on circuit 1 Unsigned 8-bit 1 0-3; number of

compressors on circuit 1

Number of compressors on circuit 2 Unsigned 8-bit 1 0-3; number of

compressors on circuit 2

Total length 9

Enumeration definitions for UCPT_chiller_type

Enumeration um n (Trane chiller

model designators)

0 RTA 1 CVH 2 CVG 3 CVR 4 CDH 5 RTH 6 CGW 7 CGA 8 CCA 9 RTW 10 RTX 11 RTU 12-254 Unused 255 Invalid (unknown)

UCPT_manufacturing_location

Range of enumeration values

Enumeration Enumeration definition

0 Field applied

(unknown location) 1 La Crosse, Wisconsin 2 Pueblo, Colorado 3 Charmes, France 4 Rushville, Indiana 5 Macon, Georgia 6 Waco, Texas 7 Lexington, Kentucky 8 Forsyth, Georgia 9 Clarksville, Tennessee 10 Ft. Smith, Arkansas 11 Penang, China 12 Colchester, UK 13 Curitiba, Brazil 14 Taicang, China 15 to 254 Unused 255 Invalid (unknown location)

Model information (

See enumeration definitions

table below.

)

64 RTAD-SVX01E-E4

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

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

Operating Principles

Figure 27 - System/Oil system schematic for Standard cooling /Partial Heat Recovery units

temperature only

FSL = Flow switch

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-SVX01E-E4 65RTAD-SVX01E-E4 65

Operating Principles

Figure 28 - System schematic for Free-Cooling units

LA only

66 RTAD-SVX01E-E4

Operating Principles

Figure 29 - System schematic for Total 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 14 = 3-way valve PI = Gauge PT =Pressure transducer 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-SVX01E-E4 67

Pre-Start Checkout

Unit Piping

❏ Flush all unit water piping before

making final connections to the unit.

❏ 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 28)

❏ 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.

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.

Electrical Wiring

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.

❏ Check chilled water pumps

interconnection to control panel.

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.

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.

Installation Checklist

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.

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.

Units with hydraulic module

CAUTION! ❏ The pump must not be used to fill

the water loop.

❏ The pump must not be activated

until the system is fully filled with water.

❏ Using the pump with absent or

unsufficient water will end up in damaging the mechanical seal.

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 L1-

L2-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.

❏ 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.

68 RTAD-SVX01E-E4

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Pre-Start Checkout

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.

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.

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.

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 UCM-

CLD.

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.

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.

70 RTAD-SVX01E-E4

Pre-Start Checkout

RTAD-SVX01E-E4 71

Unit Start-up Procedures

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 Carel

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 Free-Cooling 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: Free-

Cooling 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.

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.

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.

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.

72 RTAD-SVX01E-E4

Unit Start-up Procedures

RTAD-SVX01E-E4 73

Unit Start-up Procedures

Seasonal Unit Start-Up Procedure

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.

System Restart After Extended Shutdown

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".

Temporary Shutdown And Restart

To shut the unit down for a short time, use the following procedure:

1 Press the STOP key on the UCM-

CLD. 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.

Extended Shutdown Procedure

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.

74 RTAD-SVX01E-E4

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RTAD-SVX01E-E4 75

Maintenance

Weekly Maintenance

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.

Monthly Maintenance

1 Perform all weekly maintenance

procedures. 2 Record the system subcooling. 3 Record the system superheat. 4 Make any repairs necessary. 5 Clean the strainer after 2 hours of

operation.

Annual Maintenance

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.

Pump maintenance

Pumps motor bearings and mechanical seals have a designed life expectancy of 20000-25000 hours of operation. For critical applications it might be necessary to change the components as a preventive measure.

General

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:

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.

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).

76 RTAD-SVX01E-E4

Maintenance Procedures

RTAD-SVX01E-E4 77

Maintenance Procedures

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).

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

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.

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

UCM-CLD.

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.

78 RTAD-SVX01E-E4

Maintenance Procedures

RTAD-SVX01E-E4 79

Maintenance Procedures

Table 40 - Refrigerant Charge

per Circuit (kg).

Unit Size Circuit A Circuit B Standard Free Cooling

RTAD 085 24 24 RTAD 100 30 32 RTAD 115 35 36 RTAD 125 36 37 RTAD 145 44 48 RTAD 150 44 48 RTAD 165 61 59 RTAD 180 61 61 RTAD 085 HE 32 34 RTAD 100 HE 35 36 RTAD 115 HE 42 45 RTAD 125 HE 42 45 RTAD 145 HE 59 61 RTAD 150 HE 59 61

Partial Heat Recovery

RTAD 085 26 26 RTAD 100 33 35 RTAD 115 38 39 RTAD 125 39 40 RTAD 145 47 51 RTAD 150 47 51 RTAD 165 65 63 RTAD 180 65 65 RTAD 085 HE 35 37 RTAD 100 HE 38 39 RTAD 115 HE 45 48 RTAD 125 HE 45 48 RTAD 145 HE 63 65 RTAD 150 HE 63 65

Total Heat Recovery

RTAD 100 55 52 RTAD 115 67 64 RTAD 125 68 64 RTAD 145 86 84 RTAD 150 86 84 RTAD 165 100 95 RTAD 180 100 98 RTAD 085 HE 63 60 RTAD 100 HE 65 62 RTAD 115 HE 86 84 RTAD 125 HE 86 84 RTAD 145 HE 97 95 RTAD 150 HE 97 95

Note: Size 085 does not exist for Total Heat Recovery

option but HE version is available

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.

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.

Oil Charging Procedure

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 27-29.

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)

The standard oil charge for each circuit size is in Table 41.

Table 41 - Standard oil charge (l) (1)

Unit size Circuit A Circuit B Standard Partial Heat Recovery Free Cooling

RTAD 085 6 6 RTAD 100 7 7 RTAD 115 9 9 RTAD 125-145-150 10 10 RTAD 165 15 11 RTAD 180 15 15 RTAD 085 HE 6 6 RTAD 100 HE 7 7 RTAD 115-125 HE 10 10 RTAD 145-150 HE 11 11

Total Heat Recovery

RTAD 100 5 4 RTAD 115-125-145-150 8 7 RTAD 165 13 7 RTAD 180 13 12 RTAD 085-100 HE 5 4 RTAD 115-125-145-150 HE 8 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.

Lubrication System

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.

80 RTAD-SVX01E-E4

Maintenance Procedures

RTAD-SVX01E-E4 81

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.

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 oilfilter 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.

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.

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.

82 RTAD-SVX01E-E4

Maintenance Procedures

RTAD-SVX01E-E4 83

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.

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.

American Standard Europe BVBA Registered Office: 1789 Chaussée de Wavre, 1160 Brussels - Belgium

www.trane.com

For more information, contact your local sales office or e-mail us at comfort@trane.com

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.

Literature Order Number RTAD-SVX01E-E4 Date 1206 Supersedes RTAD-SVX01D-E4_0106 Stocking Location Europe

Trane RTAD-SVX01E, RTAD-SVX01E4 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual