Refrigerant Piping Insulation; Preparing Electrical Wiring; About Preparing Electrical Wiring - Daikin RZASG100M7V1B RZASG125M7V1B RZASG140M7V1B Installer's Reference Manual

5 Preparation
Refrigerant piping length and height difference
The piping lengths and height differences must comply with the following requirements:
1 Minimum total one‑way piping length
2 Maximum total one‑way piping length
3 Maximum allowable piping length
4 Maximum branch piping length
5 Maximum difference between branch lengths
6 Maximum height between indoor and outdoor
7 Maximum height between indoors
(a) Parenthesised figure represents the equivalent length.
Example
If the system layout is as follows...
▪ RZASG125
▪ Triple:
L2
L3
L4
L1
▪ Ø standard
5.3.2

Refrigerant piping insulation

▪ Use polyethylene foam as insulation material:
▪ with a heat transfer rate between 0.041 and 0.052 W/mK (0.035
and 0.045 kcal/mh°C)
▪ with a heat resistance of at least 120°C
▪ Insulation thickness
Ambient Humidity
temperature
≤30°C 75% to 80% RH
>30°C ≥80% RH
Installer reference guide
10
Requirement
Pair: Limit≤L1
Twin: Limit≤L1+L3
Triple: Limit≤L1+L4
Double twin: Limit≤L1+L3+L7
Pair: L1≤Limit
Twin and triple: L1+L2≤Limit
Double twin: L1+L2+L4≤Limit
Pair: N/A
Twin: L1+L2+L3≤Limit
Triple: L1+L2+L3+L4≤Limit
Double twin: L1+L2+L3+L4+L5+L6+L7≤Limit
Pair: N/A
Twin and triple: L2≤Limit
Double twin: L2+L4≤Limit
Pair: N/A
Twin: L2–L3≤Limit
Triple: L2–L4≤Limit
Double twin:
▪ L2–L3≤Limit
▪ L4–L5≤Limit
▪ L6–L7≤Limit
▪ (L2+L4)–(L3+L7)≤Limit
Pair, twin, triple and double twin: H1≤Limit
Pair: N/A
Twin, triple and double twin: H2≤Limit
1
2
3
4
5
6
7
5.4
5.4.1
Minimum thickness
15 mm
20 mm
Then the requirements are...
5 m≤L1+L4
L1+L2≤50 m (70 m)
L1+L2+L3+L4≤50 m
L2≤20 m
L2–L4≤10 m
H1≤30 m
H2≤0.5 m

Preparing electrical wiring

About preparing electrical wiring

INFORMATION
Also read the precautions and requirements in the
"General safety precautions" chapter.
INFORMATION
Also read "6.7.5 Specifications of standard wiring
components" on page 21.
Limit
71+100 125+140
5 m
(a)
50 m (70 m)
(a)
50 m (70 m)
—
50 m
50 m
— 50 m
20 m
—
10 m
10 m
— 10 m
30 m
0.5 m
RZASG71~140M_V1+Y1
Sky Air Advance-series
4P486047-1 – 2017.04