28
Single Zone
Art Cool™ Mirror W
all Mounted Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
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REFRIGERANT PIPING CONNECTIONS
Drain Hose
Indoor Unit Drain Hose Guidelines
Refer to the diagrams below and follow proper installation and the running of the drain hose along the pipe installation line to avoid leakage. After the
drain hose is set in place, always follow with evacuation and leakage testing of all piping to be sure all piping is properly sealed. Re-check and retest
as necessary.
Drain hose is routed from the indoor unit through the structure (wall)
to the outdoor. It should slope at an angle where it is higher at the
indoor unit and lower toward the outdoor area, thereby letting gravity
push any condensation down and out. See Figure 36 for proper
drainage slope. Avoid piping the drain hose as shown in Figure 37.
These methods are incorrect and can cause leakage at the indoor
unit site.
Downward slope
to outdoor
for proper drainage
Indoor
Unit
Piping
Correct Drainage Slope
Figure 36: Correct Slope Angle for Drain Hose
Upward slope
to outdoor
can cause indoor
leaks.
Water
leakage
Accumulated
drain water
Air
Waving
Water
leakage
Indoor Unit
Indoor Unit
Incorrect Drainage Setup
Tip of drain hose
dipped in water
Water
leakage
Ditch
Less than
2 Inch gap from ground
Indoor Unit
Drain Hose
Figure 37: Correct Slope Angle for Drain Hose
Outdoor Unit Drain Hose Guidelines
Depending on installation site, it may be necessary to install a drain
plug (factory supplied).
1. See Figure 28 for drain plug installation.
2. Connect a field-supplied hose to the drain connection (A). If the
hose is too long, position it carefully to prevent kinks.
LSU090HSV4, LSU120HSV4
LSU180HSV4
B
B
A
C
B
B
A
C
Do not use a drain hose with the outdoor unit in cold climates, oth-
erwise the drain water may freeze and impair heating performance.
Label
Component
A
Drain Connection
B
Drain Cap
C
Drain Washer
Table 15: Outdoor Unit Drain Connection
Legend
Figure 38: Outdoor Unit Drain Connection Components.