Name: Carrier 30GT080-420
Brand: Carrier
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LEGEND

EXV — Electronic Expansion Valve

T—Thermistor

TXV — Thermostatic Expansion Valve

Fig. 21 — Typical Thermistor Locations

SIZE 080-110*

SIZE 130-210*

*And associated modular units (see Table 1).

Fig. 22 — Thermistor T3 and T4 Locations

Safety Considerations1
- Table of Contents1
Introduction2
Installation2
- Unit Sizes and Modular Combinations2
Step 1 - Rig and Place the Unit2
- Dimensions; 30GT080,090,230B,245B3
- Center of Gravity3
- Dimensions; 30GT100,110,255B-315B4
- Dimensions; 30GT130-170, 230A-270A, 330A/B, 360B (50 Hz)5
- Location of Optional Non-Fused Disconnect7
- Unit Mounting Weights (Approximate)8
- Rigging Center of Gravity8
- Compressor Mounting Bolts27
Step 2 - Join Modules a and B (230-420 Units Only)27
Step 3 - Check Compressor Mounting27
Step 4 - Cooler Fluid and Drain Piping Connections27
- Preparation for Year-Round Operation27
- Preparation for Winter Shutdown27
- Field Power Wiring28
Step 5 - Make Electrical Connections28
- Field Power Wiring; Unit Sizes 130-21029
- Field Control Power Connections30
Step 6 - Install Accessories43
- Low-Ambient Operation43
- Hot Gas Bypass43
- Miscellaneous Accessories43
Pre-Start-Up43
System Check43
- Installation43
Quick Test44
- Compressor Connections44
- Center of Flotronic Control System45
- A. Quick Test Steps 1 - 15: Unit Configuration46
- C. Quick Test Steps 31 - 42: Output Relays46
- Condenser Fan Sequence46
- Quick Test Steps 16-30: Thermistors46
Start-Up and Operation50
- DIP Switch Functions50
- Potentiometer Locations50
Digital Display Action50
Actual Start-Up50
- Temperatures50
- Voltage51
  - Minimum Fluid Loop Volume51
  - Flow Rate Requirements51
Operating Limitations50
Operation Sequence51
- Load Shed52
- Temperature Reset52
- Head Pressure Control52
- Units with Electronic Expansion Valve (Exv)52
- 30Gt080-110 Units with Optional Thermostatic Expansion Valve (Txv)52
- Remote On-Off52
- Remote Alarm52
Service57
Diagnostics and Troubleshooting57
- 30Gt080-110 and 230B-315B Unit Control Box57
Refrigerant Circuit57
Electronic Components57
Compressors57
- Cooler Removal58
- Cooler Thermistor Locations58
- Replacing Cooler59
- Servicing Cooler59

Brand	Carrier
Model	30GT080-420
Category	Chiller
Language	English

Carrier 30GT080-420 User Manual

Table of Contents

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Carrier 30GT080-420 Specifications

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