Samsung Electronics DVM Series - Limitation When Piping Is Installed by Using Only Refnet Joint

. Installation
Λ
8. Piping and refnet joint selection
40
ΛΛ
Outdoor unit
a
bcde
hgijk
f
H1
H2
8-3. Limitation when piping is installed by using only Refnet joint
(during six rooms installation)
Max.
allowable
length
Distance of the
remotest indoor unit
from the outdoor unit
Actual length
(ft.)
Equivalent
length (ft.)
✻
1)
Max.
allowable
height
difference
Height difference between outdoor unit
and indoor unit (ft.) = H1(the figures in the
parenthesis is applied when the outdoor
unit is installed below the indoor unit)
Height difference between indoor unit = H2
Allowable length after branching
The distance from the first refnet joint to the indoor unit :
shorter than 90ft. ex) b+c+d+e+f ≤ 90ft., b+c+i ≤ 90ft.
The distance between the max piping and min piping length
from 1 refnet joint ≤ 60ft.
ex) In case of 10 horse power a+b+c+d+e+f ≤ 300ft.
ex) In case of 10 horse power ≤ 410ft.
45ft.
210
285
90 (90)
300
410
150 (120)
6.0HP5.0HP
Item
Outdoor unit
7.0/7.5HP 8.0/10.0HP
✻ 1) Equivalent length means a calculated value of the actual length plus pressure loss caused by piping curve.
For instance, the equivalent in the case of 10 horse power should be 410ft. (The detailed calculation of
equivalent length should be referenced in page
V-43).
5-2.Installation_TM_E_06890 2/27/03 10:16 AM Page 40