Installation and Maintenance Manual
Table Of Contents
- Warnings, Cautions and Notices
- Model Number Description
- General Information
- Pre-Installation
- Unit Dimensions/Weights
- Installation - Mechanical
- Location Requirements
- Rigging
- Evaporator Piping
- Condenser Water Piping (RTWD Units Only)
- Refrigerant Relief Valve Venting
- RTUD Installation
- System Configuration
- Equivalent Line Length
- Liquid Line Sizing
- Discharge (Hot Gas) Line Sizing
- Example
- Refrigerant Charge Determination
- RTUD Chilled Water Flow Control
- Oil Charge Determination
- Outdoor Air Temperature Sensor Installation Requirements
- Fan Control for the Remote Air Cooled Condenser
- RTUD Condenser Elevation Setting
- Shipping Spacers
- Installation - Electrical
- RTWD/RTUD Operating Principles
- Controls Interface
- Pre-Start Checkout
- Unit Start-Up Procedures
- Unit Shutdown
- Service and Maintenance
- Diagnostics
- Wiring Schematics

Installation - Electrical
RLC-SVX09H-EN 105
Installer-Supplied Components
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. (See RLC-PRB023-
EN)
Table 88. Customer Wire Selection - RTWD - 50 Hz - premium efficiency - standard condensing temperature
Size
Rated
Voltage
#
Conn
Wire Selection
Main Terminal Block Disconnect Circuit Breaker Hi-Fault Panel Ckt Brkr
Size Wire Range Size Wire Range Size Wire Range Size Wire Range
Amp XL YD Amp XL YD Amp XL YD Amp XL YD
160 400
1 380 #4–500 #4–500 250 #6-350 #6-350 300 3/0-500
(a)
3/0-500
(a)
300 3/0-500
(a)
3/0-500
(a)
2 175 #14-2/0 #14-2/0 250 #6-350 #6-350 200 #6-350 #6-350 200 #6-350 #6-350
180 400
1 380 #4–500 #4–500 250 #6-350 #6-350 350 3/0-500
(a)
3/0-500
(a)
350 3/0-500
(a)
3/0-500
(a)
2
XL 175/
380
YD 175
#14-2/0
#4–500
#14-2/0 250 #6-350 #6-350
200
250
#6-350 #6-350
200
250
#6-350 #6-350
200 400
1 380 #4–500 #4–500 400 3/0-500
(a)
3/0-500
(a)
350 3/0-500
(a)
3/0-500
(a)
350 3/0-500
(a)
3/0-500
(a)
2
XL 380
YD 175
#4–500 #14-2/0 250 #6-350 #6-350 250 #6-350 #6-350 250 #6-350 #6-350
Notes:
1. Optional non-fused disconnect and circuit breaker.
2. Copper wire only, based on nameplate minimum circuit ampacity (MCA).
3. Standard condensing temperature option refers to entering condenser water temperatures 95°F (35°C) and below.
4. Circuit two information is the same as circuit one unless listed on a separate line below circuit one values.
5. XL - across-the-line starter and YD - wye-delta starter.
(a) Will accept 2 conduits per phase in this size.
Table 89. Customer Wire Selection - RTWD - 50 Hz - premium efficiency - high condensing temperature
Size
Rated
Voltage
#
Conn
Wire Selection
Main Terminal Block Disconnect Circuit Breaker Hi-Fault Panel Ckt Brkr
Size Wire Range Size Wire Range Size Wire Range Size Wire Range
Amp XL YD Amp XL YD Amp XL YD Amp XL YD
160 400
1 380 #4–500 #4–500 400 3/0-500
(a)
3/0-500
(a)
350 3/0-500
(a)
3/0-500
(a)
350 3/0-500
(a)
3/0-500
(a)
2
XL 380
YD 175
#4–500 #14-2/0 250 #6-350 #6-350 250 #6-350 #6-350 250 #6-350 #6-350
180 400
1 380 #4–500 #4–500 400 3/0-500
(a)
3/0-500
(a)
400 3/0-500
(a)
3/0-500
(a)
400 3/0-500
(a)
3/0-500
(a)
2
XL 380
YD
175/
380
#4–500
#14-2/0
#4–500
250 #6-350 #6-350
250
300
#6-350
3/0-500
(a)
#6-350
3/0-500
(a)
250
300
#6-350
3/0-500
(a)
#6-350
3/0-500
(a)
200 400
1 380 #4–500 #4–500 400 3/0-500
(a)
3/0-500
(a)
450 3/0-500
(a)
3/0-500
(a)
450 3/0-500
(a)
3/0-500
(a)
2 380 #4–500 #4–500 250 #6-350 #6-350 300 3/0-500
(a)
3/0-500
(a)
300 3/0-500
(a)
3/0-500
(a)
Notes:
1. Optional non-fused disconnect and circuit breaker.
2. Copper wire only, based on nameplate minimum circuit ampacity (MCA).
3. Standard condensing temperature option refers to entering condenser water temperatures 95°F (35°C) and below.
4. Circuit two information is the same as circuit one unless listed on a separate line below circuit one values.
5. XL - across-the-line starter and YD - wye-delta starter.
(a) Will accept 2 conduits per phase in this size.