12 Technical data
Installer reference guide
30
RZAG71~Y1
Sky Air Alpha-series
4P486046-1A – 2017.08
Multiple rows of units (
)
b (mm)
H
B
≤½H
U
b≥250
½H
U
<H
B
≤H
U
b≥300
H
B
>H
U
H
B
H
U
≥1000
≥200
≥2000
≥100
≥3000
≥600
≥1500
b
≥100
≥100
≥100
≥100
≥100
≥100
H
B
H
U
Stacked units (max. 2 levels) (
)
A1
B1
A2
B2
A2
≥1000
A2
≥300
≥100
≥100
≥100
≥300
≥100
≥100
B2
≥100
≥1000
B2
A1=>A2
(A1) If there is danger of drainage dripping and freezing between the upper and lower units…
(A2) Then install a
roof
between the upper and lower units. Install the upper unit high enough above the lower unit to prevent ice buildup at the
upper unit's bottom plate.
B1=>B2
(B1) If there is no danger of drainage dripping and freezing between the upper and lower units…
(B2) Then it is not required to install a roof, but
seal the gap
between the upper and lower units to prevent discharged air from flowing back to the
suction side through the bottom of the unit.
12.3
Piping diagram: Outdoor unit
LPS
HPS
sv
A
B
Charge port / Service port (with 5/16" flare)
Stop valve
Filter
Check valve
Pressure relief valve
Solenoid valve
Heat sink (PCB)
Capillary tube
Electronic expansion valve
4‑way valve
High pressure switch
LPS
Low pressure switch
Compressor accumulator
Heat exchanger