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REFRIGERANT DESIGN | 61
Refrigerant Piping Design & Layout Best Practices
REFRIGERANT PIPING DESIGN
Figure 20: Single Zone Wall Mounted Art Cool Premier System Layout.
Outdoor unit
Indoor unit
A
B
Outdoor unit
Indoor unit
A
B
Max Length = A
Max Elevation = B
Unit = Feet
Design Guideline Summary/Selecting Field-Supplied Copper Tubing
Device Connection Limitations
Single-zone systems consist of one outdoor unit and one indoor
unit. One of the most critical elements of a single zone system is the
refrigerant piping. The table below lists pipe length limits that must
be followed in the design of a Single Zone Wall Mounted Art Cool
Premier refrigerant pipe system. Refer to the figure for maximum
length and elevation of piping.
Table 31: Single Zone Wall Mounted Art Cool Premier Refrigerant Piping System Limitations.
Pipe Length
(ELF = Equivalent Length of
pipe in Feet)
Longest total equivalent piping
length
LA090HYV3 LA120HYV3 LA150HYV3 LA180HYV3 LA240HYV3
65.6 feet 65.6 feet 164 feet 164 feet 164 feet
Shortest total equivalent piping
length
9.8 feet 9.8 feet 9.8 feet 9.8 feet 9.8 feet
Distance between fittings and
indoor units or outdoor units
≥20 inches ≥20 inches ≥20 inches ≥20 inches ≥20 inches
No Additional Refrigerant
24.6 feet 24.6 feet 24.6 feet 24.6 feet 24.6 feet
Elevation
(All Elevation Limitations are
Measured in Actual Feet)
If outdoor unit is above indoor
unit
39.4 feet 39.4 feet 98.4 feet 98.4 feet 98.4 feet
If outdoor unit is below indoor
unit
39.4 feet 39.4 feet 98.4 feet 98.4 feet 98.4 feet
Additional Refrigerant Needed (oz/ft)
0.22 0.22 0.38 0.38 0.38
Model Refrigerant Piping Length (feet)
Indoor Unit Outdoor Unit 16.4 24.6 32.8 41 49.2 65.6 82 98.4 114.8 131.2 147.6 164.0
LAN090HYV3 LAU090HYV3 0 0 1.8 3.6 5.4 9.0 - - - - - -
LAN120HYV3 LAU120HYV3 0 0 1.8 3.6 5.4 9.0 - - - - - -
LAN150HYV3 LAU150HYV3 0 0 3.1 6.2 9.3 15.6 21.8 28.0 34.3 40.5 46.7 53
LAN180HYV3 LAU180HYV3 0 0 3.1 6.2 9.3 15.6 21.8 28.0 34.3 40.5 46.7 53
LAN240HVY3 LAU240HVY3 0 0 3.1 6.2 9.3 15.6 21.8 28.0 34.3 40.5 46.7 53
• Values are in ounces (oz.).
• Capacity is based on standard length; maximum allowance length is based on reliability.
• Equivalent pipe length = actual pipe length + number of bends x 0.3.
• Calculation: X oz. = ([Refrigerant Piping Length] - [(Chargeless Length]) × Additional Refrigerant.
Table 32: Single Zone Wall Mounted Art Cool Premier Additional Refrigerant by Piping Length (oz.).
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