SS-APG008-EN 3
Overview
Equipment Placement
Minimize Distance Between Components
For a split air-conditioning system to perform as reliably and inexpensively as possible, the
refrigerant charge must be kept to a minimum. To help accomplish this design goal:
• Site the outdoor unit (cooling-only condensing unit or heat pump) as close to the indoor unit
as possible.
• Route each interconnecting refrigerant line by the shortest and most direct path so that line
lengths and riser heights are no longer than absolutely necessary.
• Use only horizontal and vertical piping configurations.
• Determine whether the total length of each refrigerant line requires Trane review. Be sure to
account for the difference in elevations of the indoor and outdoor units when calculating the
total line length.
Interconnecting lines of 150 lineal ft (45.7 m) or less do not require Trane review, but only a
limited amount may be in a riser (see Figure 2, Figure 3, and Figure 4).
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