Heat pump 50Hz/R410A
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14
2. Guideline for each installation process
Part 3 Design and installation
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. : 26C DB
Indoor humidity RH : 85%
Outlet temp. :14C DB
Outlet temp. RH: 50%
400 (0.4)
700
Ø32/25mm
-
Duct
Ceiling and floor
-
-
-
Wall Mounted
-
-
-
-
-
ART COOL
400 (0.4)
700
Ø32/25mm
1 way
400 (0.4)
700
Ø32/25mm
4 way
Multi F
cm
3
/min (lpm)
Drain amount
(at 10mm height)
Drain pump
discharge
head (mm)
By gravity
slope
-
-
-
Console
By gravity
slope
By gravity
Standard
Standard
Accessory
slope
By gravity
slope
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)
8
8.5
10.5
11.5
17
19
21
23
25
34
kW
2.04
2.33
2.91
4.36
5.82
7.28
8.73
10.2
11.6
14.6
[Reference Table] Drain amount per capacity
