Fujitsu AIRSTAGE J-IIIL Design & Technical Manual page 597

¢ Central drain process
When conveying multiple drain pipes, install according to the procedure shown below.
• For Compact cassette type, and Circular flow cassette type, and Cassette type
A
• For High static pressure duct type
• For Mini duct type and Slim duct type
Select converging drain pipes whose diameter is suitable for the operating capacity of the unit.
5-2. Indoor unit
VP30 (O.D. 1-1/2 [38 mm]) or more
Downward gradient 1/100 to 1/50
Compact cassette type
Circular flow cassette type
type
Cassette type
- (06-75) -
T-joint converging drain pipes
28 in (700 mm) or less
34 in (850 mm) or less
5. Drain connection