Johnson Controls R SERIES Installation And Maintenance Manual page 14

Supporter
(5) Use a suitable condensate hose, and see Table 3-3-3 for its size.
(6) There is a drain port on both the left and right sides. Select the drain port to match the local
conditions (Figure 3-1-10).
(7) When the unit is shipped from the factory, the drain port is defaulted to be the one on the left side
(electric box side). The port on right side has been plugged.
(8) When using the drain port on the right side of the unit, reinstall the drain cap to the left side drain
port (Figure 3-1-12).
Always check that the drain cap is installed to the unused drain port and is fastened with the nylon fastener. If the drain
cap is not installed, or is not sufficiently fastened by the nylon fastener, water may drip during the cooling operation.
(9) Be sure to insulate where the drain port and the condensate hose is connected (Figure
3-1-13).(10) The unused drain port also should be insulated properly (Figure 3-1-14).
1~1.5m(3-2/7~5feet)
Figure 3-1-9
Condensate Pipe
negative pressure status, it is required
to set up a backwater elbow. The
requirement is:
Enlarged View
Condensate Pipe
unit. The unit of the pressure is psig.
Figure 3-1-11
Drain port
Fastener
Figure 3-1-12
Condensate hose
Figure 3-1-10
As the inside of the unit is in the
A=B≥(0.145P/10000+20)/25.4(inch)
P is the absolute pressure inside the
Drain cap
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