System Configuration And Interconnecting Refrigerant Piping; Installation - Remote Evaporator - Trane RTAA-70 Installation & Maintenance Manual

Installation — Remote Evaporator
The RTAA outdoor unit with the remote evaporator option is shipped as two
pieces: the outdoor unit (condenser) and the evaporator. Short suction line
connections are provided with the outdoor condensing unit. The liquid line
connections are at the end opposite the control panel.
The remote evaporator is shipped complete with factory-mounted
refrigeration specialties (electronic expansion valves, sight-glasses and
removable core filter-dryers). All evaporator refrigerant line connections are at
one end of the evaporator. The installing contractor need only provide and
install the inter-connecting refrigerant piping between the remote evaporator
and the outdoor condensing unit and liquid line isolation valves. In some
instances, the installing contractor may also need to lengthen the factory
installed suction accumulator.
System Configuration and Interconnecting Refrigerant
Piping
The system may be configured in any of the four arrangements shown in
Figure 17 through Figure 20. The configurations and their associated
elevations, along with the total distance between the remote evaporator and
the compressor/condenser section, play a critical role in determining suction
and liquid line sizes. This will also affect field refrigerant and oil charges.
Consequently, there are physical limits which must not be violated if the
system is to operate as designed. Please note the following requirements for
field installation:
RTAA-SVX01A-EN 31