Johnson Controls R SERIES Installation And Maintenance Manual page 22

2.2.5 Dimension Data
Model
DHR18NCB21S
DHR24NCB21S
DHR30NCB21S
DHR36NCB21S 1420(55-7/8)
DHR42NCB21S
1700(66-7/8)
DHR48NCB21S
2.2.6 Condensate Piping Work
2.2.6.1 Precautions When Doing the Piping Work
(1) Keep piping as short as possible and slope it downwards at a gradient of at least 1/100 so that air
may not remain trapped inside the pipe.
(2) Keep pipe size equal to or greater than that of the connecting pipe.
(3) Install the condensate piping as shown and take measures against condensation. Improperly
rigged piping could lead to leaks and eventually property damage.
Extension condensate
piping (commercially
available)
Figure 3-1-30
Table 3-1-6
A B
1220(48) 225(8-7/8)
245(9-5/8)
245(9-5/8)
Insulating tube
(commercially
available)
Figure 3-1-31
C
1158(45-5/8)
1354(53-1/4)
1634(64-3/8)
Insulating tape
(accessory)
14
Unit: mm (inch)
D H
280(11) 700(27-1/2)
280(11) 700(27-1/2)
280(11) 700(27-1/2)
Indoor unit
condensate hose