Drainage Pipe Installation - Airwell CDMX-035N-09M25 Technical Manual

Caution
Since the gravity center of the unit is not at its physical
center, so please be careful when lifting it with a sling.
Never hold the inlet of the outdoor unit to prevent it from
deforming.
Do not touch the fan with hands or other objects.
Do not lean it more than 45, and do not lay it sidelong.
Make concrete foundation according to the specifications
of the outdoor units.
Fasten the feet of this unit with bolts firmly to prevent it
from collapsing in case of earthquake or strong wind.

5. Drainage Pipe Installation

Install the drainage pipe as shown below and take
measures against condensation. Improperly installation
could lead to leakage and eventually wet furniture and
belongings.
5.1 Installation principle
•
Ensure at least 1/100 slope of the drainage pipe
•
Adopt suitable pipe diameter
•
Adopt nearby condensate water discharge
5.2 Key points of drainage water pipe
installation
1. Considering the pipeline route and elevation.
•
Before installing condensate water pipeline, deter-
mine its route and elevation to avoid intersection
with other pipelines and ensure slope is straight.
2. Drainage pipe selection
•
The drainage pipe diameter shall not small than the
drain hose of indoor unit
•
According to the water flowrate and drainage pipe
slope to choose the suitable pipe, the water flow-
rate is decided by the capacity of indoor unit.
Relationship between water flowrate and capacity of
indoor unit
Capacity (kBtu/h)
12
18
24
30
36
42
48
60
According to the above table to calculate the total water
flowrate for the confluence pipe selection.
For horizontal drainage pipe (The following table is for
reference)
Reference
PVC value of inner
pipe diameter of
pipe (mm)
PVC25 20
25
PVC32
31
PVC40
PVC50 40
51
PVC63
Attention: Adopt PVC40 or bigger pipe to be the main
pipe.
Water flowrate (l/h)
2.4
4
6
7
8
10
12
14
Allowable
maximum water
flowrate (l/h) Remark
Slope Slope
1/50 1/100
39 27
For branch
pipe
70 50
Could be
125 88
used for
247 175
confluence
473
334
pipe
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