Kaysun Zen On 2014 Service Manual - page 70
Drainage pipe installation
64
Installation
other pipelines and ensure slope is straight.
6.2.2 Drainage pipe selection
The drainage pipe diameter shall not small than the drain hose of indoor unit
According to the water flow rate and drainage pipe slope to choose the suitable pipe, the water flow rate
is decided by the capacity of indoor unit.
Relationship between water flow rate and capacity of indoor unit
Capacity (x1000Btu)
Water flow rate (l/h)
12
2.4
18
4
24
6
30
7
36
8
42
10
48
12
60
14
According to the above table to calculate the total water flow rate for the confluence pipe selection.
For horizontal drainage pipe (The following table is for reference)
PVC pipe
Reference value of inner
diameter of pipe (mm)
Allowable maximum water flow rate (l/h)
Remark
Slope 1/50
Slope 1/100
PVC25
20
39
27
For branch pipe
PVC32
25
70
50
PVC40
31
125
88
Could be used for confluence pipe
PVC50
40
247
175
PVC63
51
473
334
Attention: Adopt PVC40 or bigger pipe to be the main pipe.
For Vertical drainage pipe (The following table is for reference)
PVC pipe
Reference value of inner
diameter of pipe (mm)
Allowable maximum water flow rate
(l/h)
Remark
PVC25
20
220
For branch pipe
PVC32
25
410
PVC40
31
730
Could be used for confluence pipe
PVC50
40
1440
PVC63
51
2760
PVC75
67
5710
PVC90
77
8280
Attention: Adopt PVC40 or bigger pipe to be the main pipe.
6.2.3 Individual design of drainage pipe system
The drainage pipe of air conditioner shall be installed separately with other sewage pipe, rainwater pipe
and drainage pipe in building.
The drainage pipe of the indoor unit with water pump should be apart from the one without water pump.
6.2.4 Supporter gap of drainage pipe
In general, the supporter gap of the drainage pipe horizontal pipe and vertical pipe is respectively
1m~1.5m and 1.5m~2.0m.
Each vertical pipe shall be equipped with not less than two hangers.
Overlarge hanger gap for horizontal pipe shall create bending, thus leading to air block.
Too long distance
Gas bag