Daikin RZQ71B7V3B, Руководство по установке

Страница: 8 / 18

Installation manual
5
RZQ71~125B7V3B
Split System air conditioners
4PW16864-1A
Selection of piping material
■
Construction material: phosphoric acid deoxidized seamless
copper for refrigerant.
■
Temper grade: use piping with temper grade in function of the
pipe diameter as listed in table below.
■
The pipe thickness of the refrigerant piping should comply with
relevant local and national regulations. The minimal pipe
thickness for R-410A piping must be in accordance with the
table below.
O = Annealed
1/2H = Half hard
Refrigerant pipe size
■
Pair system (See figure 2)
■
Simultaneous operation system (twin: see figure 3 , triple: see
figure 4 , double twin: see figure 5 )
The pipes between the outdoor unit and the branch (L1) should have
the same size as the outdoor connections. The pipes between the
branch and the indoor units (L2~L5) should have the same size as
the indoor connections. Branch: see marking '
■
' on figures 3 , 4
and 5 .
Allowable pipe length and height difference
See the table below concerning lengths and heights. Refer to figures
2 , 3 , 4 and 5 . Assume that the longest line in the figure corresponds
with the actual longest pipe, and the highest unit in the figure
corresponds with the actual highest unit.
Pipe Ø
Temper grade of piping
material Minimal thickness t(mm)
6.4 / 9.5 / 12.7 O 0.80
15.9 O 1
19.1 1/2H 1
Refrigerant pipe size
(*)
(*) In case of twin, triple and double twin applications, the listed refrigerant pipe
sizes relate to the main pipes only. (L1 = the pipes between the outdoor unit and
the branch in figures
3 ~ 5 ).
Gas pipe
Model Size-down Standard size Size-up
RZQ71 Ø12.7
Ø15.9
—
125 — Ø19.1
Liquid pipe
Model Size-down Standard size Size-up
RZQ71~125 Ø6.4 Ø9.5 Ø12.7
NOTE Not using the standard pipe size may result in capacity
decrease. It is up to the installer to judge on this
phenomena carefully in function of the complete
installation.
Allowable pipe length
Liquid pipe
size
Model RZQ
71 100 125
Maximum allowable piping length
(*)
(*) Parenthesized figure represents the equivalent length.
Pair L1 size-down 10 m (15 m)
standard
50 m
(70 m)
75 m
(95 m)
75 m
(95 m)
size-up
25 m
(35 m)
35 m
(45 m)
35 m
(45 m)
• Twin and triple
• Double twin • L1+L2
• L1+L2+
L4
size-down 10 m (15 m)
standard
50 m
(70 m)
75 m
(95 m)
75 m
(95 m)
size-up
25 m
(35 m)
35 m
(45 m)
35 m
(45 m)
Maximum total one-way piping length
Twin L1+L2+L3
—
60 m
75 m
75 m
Triple L1+L2+L3
+L4
—
Double twin L1+L2+L3
+L4+L5+
L6+L7
—
Maximum branch piping length
• Twin and triple
• Double twin • L2
• L2+L4
— 20 m
Maximum difference between branch lengths
Twin L2–L3
—
10 m
10 m
10 m
Triple L2–L4 —
Double twin • L2–L3
• L4–L5
• L6–L7
• (L2+L4)–
(L3+L7)
—
Maximum height between indoor and outdoor
All H1 — 30 m
Maximum height between indoors
Twin, triple and
double twin H2
— 0.5 m
Chargeless length
All L1+L2+L3
+L4+L5+
L6+L7 size-down
≤
10 m
standard
≤
30 m
size-up
≤
15 m