Daikin RZASG100M7V1B, Installer'S Reference Manual

Page: 10 / 32

5 Preparation
Installer reference guide
10
RZASG71~Y1
Sky Air Advance-series
4P486047-1 – 2017.04
Refrigerant piping length and height difference
The piping lengths and height differences must comply with the following requirements:
Requirement Limit
71+100 125+140
1 Minimum total one‑way piping length Pair: Limit≤L1
Twin: Limit≤L1+L3
Triple: Limit≤L1+L4
Double twin: Limit≤L1+L3+L7
5 m
2 Maximum total one‑way piping length Pair: L1≤Limit 50 m (70 m)
(a)
Twin and triple: L1+L2≤Limit
Double twin: L1+L2+L4≤Limit
50 m (70 m)
(a)
3 Maximum allowable piping length Pair: N/A —
Twin: L1+L2+L3≤Limit 50 m
Triple: L1+L2+L3+L4≤Limit 50 m
Double twin: L1+L2+L3+L4+L5+L6+L7≤Limit — 50 m
4 Maximum branch piping length Pair: N/A
Twin and triple: L2≤Limit
Double twin: L2+L4≤Limit
20 m
5 Maximum difference between branch lengths Pair: N/A —
Twin: L2–L3≤Limit 10 m
Triple: L2–L4≤Limit 10 m
Double twin:
▪ L2–L3≤Limit
▪ L4–L5≤Limit
▪ L6–L7≤Limit
▪ (L2+L4)–(L3+L7)≤Limit
— 10 m
6 Maximum height between indoor and outdoor Pair, twin, triple and double twin: H1≤Limit 30 m
7 Maximum height between indoors Pair: N/A
Twin, triple and double twin: H2≤Limit
0.5 m
(a) Parenthesised figure represents the equivalent length.
Example
If the system layout is as follows… Then the requirements are…
▪ RZASG125
▪ Triple:
L2
L3
L4
H1
H2
L1
▪ Ø standard
1 5 m≤L1+L4
2 L1+L2≤50 m (70 m)
3 L1+L2+L3+L4≤50 m
4 L2≤20 m
5 L2–L4≤10 m
6 H1≤30 m
7 H2≤0.5 m
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
temperature
Humidity Minimum thickness
≤30°C 75% to 80% RH 15 mm
>30°C ≥80% RH 20 mm
5.4 Preparing electrical wiring
5.4.1 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 .