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Indoor Condensate Drain Piping
PIPING INSTALLATION
12
Observe all local sanitary codes when installing condensate drains.
WARNING
The drain piping should be as short as possible with a constant downward slope. It is recommended
to install the condensate drain system with hard polyvinyl chloride (PVC) pipe and matching
connectors. Use piping of the same or greater diameter as the unit connection.
The Floor/Ceiling drainage port diameter is 11/16-in
(17-mm) OD.
Pitch the condensate drain pipe at a gradual 2.5% pitch
(Example: ΒΌ-in drop over a 10-in length) without
obstructions. Use pipe hanger/brackets to support
the condensate drain pipe from dropping.
If a gradual pitch from the drainage port is not obtainable, use an auxiliary condensate pump with
float valve. A float valve is recommended to shut off the system if auxiliary pump fails.
NOTE: Insulate condensate hose and/or pipes to prevent sweating which may cause
water stains or wall damage.
Ceiling
H
Hangers
Wall
Typical Drainage System
Outdoor Unit Pipe Connections
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