Johnson Controls R SERIES Installation And Maintenance Manual page 11

Condensate
Pipes
2.1.4 Dimension Data
For the units: 18k
For the units: 24k~42k
Level Instrument
Air Intake
As the inside of the unit is in the negative
Enlarged View
pressure status, it is required to set up a
Condensate Pipe
backwater elbow. The requirement is:
A=B≥(0.145P/10000+20)/25.4(inch)
P is the absolute pressure inside the unit.
The unit of the pressure is psig.
Figure 3-1-5
3
Air Supply