Daikin Sky Air Advance RZA200D7Y1B, Installer'S Reference Manual

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5 Preparation
Installer reference guide
12
250D7Y1B
Sky Air Advance-series
4P573383-1 – 2019.04
Requirement Limit
4 Maximum difference between branch piping
length
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
5 Maximum height between indoor and outdoor Pair, twin, triple and double twin: H1≤limit 30 m
6 Maximum height between indoors Twin, triple and double twin: H2≤limit 0.5 m
(a) When piping length is <5 m, a complete recharge of the unit is required. If the distance between indoor and outdoor unit is less than 5 m, make
sure that the piping length is more than 5 m by additional bending of the pipes.
Example
If the system layout is as follows… Then the requirements are…
▪ Triple:
L2
L3
L4
H1
H2
L1
▪ Ø standard
1 5 m≤L1+L4
2 L1+L2+L3+L4≤100 m
3 L2≤20 m
4 L2–L4≤10 m
5 H1≤30 m
6 H2≤0.5 m
If size-up of liquid pipes is used, the indoor unit must be installed on
a lower location than the outdoor unit.
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 "6.8.5 Specifications of standard wiring
components" [
4
24].
WARNING
▪ If the power supply has a missing or wrong N-phase,
equipment might break down.
▪ Establish proper earthing. Do NOT earth the unit to a
utility pipe, surge absorber, or telephone earth.
Incomplete earthing may cause electrical shock.
▪ Install the required fuses or circuit breakers.
▪ Secure the electrical wiring with cable ties so that the
cables do NOT come in contact with sharp edges or
piping, particularly on the high-pressure side.
▪ Do NOT use taped wires, stranded conductor wires,
extension cords, or connections from a star system.
They can cause overheating, electrical shock or fire.
▪ Do NOT install a phase advancing capacitor, because
this unit is equipped with an inverter. A phase
advancing capacitor will reduce performance and may
cause accidents.
WARNING
▪ All wiring MUST be performed by an authorised
electrician and MUST comply with the applicable
legislation.
▪ Make electrical connections to the fixed wiring.
▪ All components procured on-site and all electrical
construction MUST comply with the applicable
legislation.
WARNING
ALWAYS use multicore cable for power supply cables.