Installation - Mechanical Remote Evaporator Interconnecting Refrigerant Piping; General - Trane RTAA-130 Installation, Operation And Maintenance Manual

Figure 26
Remote Evaporator Installation –
No Elevation Difference
Installation - Mechanical
Remote Evaporator Interconnecting
Refrigerant Piping.

General

The RTAA outdoor unit with the
Remote Evaporator option is shipped
as two pieces: the outdoor unit
(condensing) and the evaporator. The
outdoor unit includes a suction
accumulator line on each circuit and
has the field connections for the
refrigerant at the end opposite the
control panel.
The 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 refrigerant piping between
the evaporator and the outdoor unit.
47
System Configuration
The system may be configured in
either of the two primary arrangements
as shown in Figures 26 and 27. The
configuration and its associated
elevation, 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
restrictions:
RTAA-IOM-3