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Drain pipe installation
The air handler "A" coil drain pan has two ¾" NPT (Φ19.05mm) female primary and two secondary connections (left or right
hand). The horizontal pan has two ¾" NPT (Φ19.05mm) female, one primary and one secondary. Piping from each fitting
used is to have 2 inch (50.8mm) minimum trap and each run in such a manner as to provide enough slope for adequate
drainage to a visible area. Do not pipe these two fittings together into a common drain. Prime drain with water before
operating the unit by pouring water into the condensate pan. Cap unused connections.
2" minimum
(50.8mm minimum)
2" minimum
(50.8mm minimum)
Typical Condensate Traps
• Make sure to keep the drain hose from getting tangled or loosened (on the connection part).
• Insulate all condensate pipes connected to the indoor unit to prevent condensation formation.
CAUTION
Condensate formation on condensate pipes can lead to property damage and unsafe environment
conditions.
When passing the drain hose through the hole drilled in the wall, make sure to avoid following cases.
• Since the draining is of natural drain type, install the drain hose in downward direction.
• If you do not tie the drain hose with a cable tie, leakage may occur
CAUTION
• Drain pipe may get clogged if there is any foreign substances within the drain pan, so you must remove
any foreign substances after completing the installation.
18 English
DB68-11271A-02_IM_CAC Universal AHU Indoor_AA_EN_.indd 18
2" minimum
(50.8mm minimum)
Anti-syphon air vent
Refrigerant pipe
conections
Horizontal left
(right to left) drain
connections
Horizontal right
(left to right)
drain pan
opening
2022-09-15 오전 9:53:17
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