Install Instructions

2.3 Drain piping work
The purpose of drain piping is to prevent damage of products and ceiling materials by proper draining of dew condensation
which is generated from the evaporator of indoor unit when the hot vapors come in contact with the evaporator.
1. Application
Pipes for draining water generated from indoor unit on cooling operation
Specification for drain piping
Remark
Indoor temp. : 26℃(78.8℉)
Indoor humidity RH : 85%
Outlet temp. :14℃(57.2℉)
Outlet temp. RH: 50%
400 (0.4)800(31-1/2)
32(1-1/4) / 25(31/32) mm(inch)
Cassette 4 way
cm
3
/min (lpm)
Drain amount
(at 10mm height)
Drain pump
discharge head
[mm(inch)]
Standard
Drain
pump
Drain pipe
diameter
(External/
Internal)
Type
Drain amount
(lpm)
0.128
0.137
0.169
0.185
0.273
0.305
0.337
0.369
0.402
0.546
Air flow rate
CMH CFM
4.7
5.0
6.2
6.8
10.0
11.2
12.4
13.5
14.7
20.0
8.0
8.5
10.5
11.5
17.0
19.0
21.0
23.0
25.0
34.0
kW
2.04
2.33
2.91
4.36
5.82
7.28
8.73
10.2
11.6
14.6
SINGLE ZONE
[Reference Table] Drain amount per capacity
2. Guideline for each installation process
14 _ Heat pump 60Hz/R410A
Installation of
Outdoor Units
SINGLE ZONE