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Operating Principles
Table 2.
Legend
No
Description
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
Shutoff Valve
10
Filter Drier
Table 3.
Device designators
Device
3BL1
Level Sensor; Oil Loss - Ckt 1
3BP1
Pressure Transducer; Suction Pressure - Ckt 1A
3BP2
Pressure Transducer; Discharge Pressure - Ckt 1
3BP3
Pressure Transducer; Oil Pressure - Ckt 1A
Pressure Transducer; Liquid Pressure Microchannel Evap -
3BP4
3BP5
Economizer Pressure Sensor Circuit 1A
3BP6
Economizer Pressure Sensor Circuit 1B
3BP11
Pressure Transducer; Suction Pressure - Ckt 1B
3BP13
Pressure Transducer; Oil Pressure - Ckt 1B
3BT1
Temperature Sensor; Oil Temperature - Ckt 1A
3BT2
Temperature Sensor; Discharge Temperature - Ckt 1A
Temperature Sensor; Liquid Line Temperature
3BT3
Microchannel Evap - Ckt 1A
3BT4
Temperature Sensor; Evap Pool Temperature - Ckt 1A
3BT5
Economizer Fast-acting Temperature Sensor - Ckt 1A
3BT6
Economizer Fast-acting Temperature Sensor - Ckt 1B
3BT11
Temperature Sensor; Oil Temperature - Ckt 1B
3BT12
Temperature Sensor; Discharge Temperature - Ckt 1B
3K1
Electronic Expansion Valve - Ckt 1A
3K2
Economizer Expansion Valve - Ckt 1A
3K3
Economizer Expansion Valve - Ckt 1B
3M1
Motor; Compressor 1A
3M2
Motor; Compressor 1B
3M7
Solenoid; Oil - Compressor 1A
3M9
Solenoid; Oil - Compressor 1B
6B1
Switch; Evaporator Water Flow
6BT2
Temperature Sensor; Evaporator Leaving Water Temperature 6E50-2
6BT3
Temperature Sensor; Evaporator Entering Water Temperature 6E50-3
8
No
11
Electronic Expansion Valve
12
13
14
15
16
17
Suction Service Valve
18
19
Description
Ckt 1
Description
Sight Glass
PSH
Relief Valve
Service Valve
PZH
Solenoid Valve
Oil Filter
TCE
Schrader Valve
Refrigerant Tank
Device
4BL1
4BP1
Pressure Transducer; Suction Pressure - Ckt 2A
4BP2
Pressure Transducer; Discharge Pressure - Ckt 2
4BP3
Pressure Transducer; Oil Pressure - Ckt 2A
Pressure Transducer; Liquid Pressure Microchannel Evap -
4BP4
4BP5
Economizer Pressure Sensor Circuit 2A
4BP6
Economizer Pressure Sensor Circuit 2B
4BP11
Pressure Transducer; Suction Pressure - Ckt 2B
4BP13
Pressure Transducer; Oil Pressure - Ckt 2B
4BT1
Temperature Sensor; Oil Temperature - Ckt 2A
4BT2
Temperature Sensor; Discharge Temperature - Ckt 2A
Temperature Sensor; Liquid Line Temperature
4BT3
4BT4
Temperature Sensor; Evap Pool Temperature - Ckt 2A
4BT5
Economizer Fast-acting Temperature Sensor - Ckt 2A
4BT6
Economizer Fast-acting Temperature Sensor - Ckt 2B
4BT11
Temperature Sensor; Oil Temperature - Ckt 2B
4BT12
Temperature Sensor; Discharge Temperature - Ckt 2B
4K1
Electronic Expansion Valve - Ckt 2A
4K2
Economizer Expansion Valve - Ckt 2A
4K3
Economizer Expansion Valve - Ckt 2B
4M1
4M2
4M7
4M9
6E50-1
Submersion Heater; Evaporator Shell Antifreeze Heater
Submersion Heater; Evaporator Shell Antifreeze Heater
Submersion Heater; Evaporator Shell Antifreeze Heater
6E50-4
Submersion Heater; Evaporator Shell Antifreeze Heater
6E50-5
Heat Tape; Evaporator Shell Antifreeze Heater
6E50-6
Heat Tape; Evaporator Shell Antifreeze Heater
No
Description
PT
Pressure Transducer
High Pressure Relief Valve
PSL
Low Pressure Relief Valve
High Pressure Switch
TT
Temperature Sensor
Electronic Expansion Valve
TC
Expansion Valve
OS
Optical Sensor
FS
Flow Switch
H
Heater
Description
Level Sensor; Oil Loss - Ckt 2
Ckt 2
Microchannel Evap - Ckt 2A
Motor; Compressor 2A
Motor; Compressor 2B
Solenoid; Oil - Compressor 2A
Solenoid; Oil - Compressor 2B
RTAF-SVX002D-EN
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