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Indoor Drain Piping
The indoor wall unit uses a gravity drain system. There is no internal condensate pump. The drain
hose must slope downward with no kinks, raises or fluctuations.
PIPING INSTALLATION
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1. Connect the field supplied drain hose to the outlet
pipe of indoor wall unit. A field supplied transition or
adapter may be required. Secure connection with a
field supplied hose clamp.
2. On the interior portion, apply pipe insulation to the
entire drain line and joints to prevent sweating.
3. The through-wall hole for the drain hose must be lower than
the indoor wall unit drain outlet for a functional gravity drain system.
4. Install field supplied drain hose with a downward slope from the Indoor wall unit
drain outlet to the drain hose outlet.
5. Route the condensate drain hose in the safety location to
dispose of the condensate water.
The drain hose
cannot raise upward.
The drain hose
slopes downward.
The drain hose
cannot raise upward.
Correct Incorrect Incorrect
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NOTE: A condensate pump accessory (sold separately) is recommended for the
indoor unit when adequate line pitch cannot be provided for gravity drainage.
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