Panasonic U-16GE2E5, Procedures And Technical Points For System Installation

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EN - 8
Table 2-2 Main tubing size after distriburion (D2, D3, Dn)
Outdoor
unit
Outdoor tubing (mm)
Post-branch main tubing
Total capacity for connected indoor units (kW)
35.6 to 142.0 28.1 to 35.5 16.1 to 28.0 9.0 to 16.0 Under 9.0
45.0 kW
Suction tube
Ø28.58
(Ø31.75)
Ø28.58
(Ø31.75)
Ø28.58 Ø25.4 Ø19.05 Ø15.88
Discharge tube Ø22.22 Ø22.22 Ø22.22 Ø19.05 Ø15.88 Ø12.7
Liquid tube Ø19.05 Ø15.88 Ø15.88 Ø12.7 Ø9.52 Ø9.52
56.0 kW
Suction tube
Ø28.58
(Ø31.75)
Ø28.58
(Ø31.75)
Ø28.58 Ø25.4 Ø19.05 Ø15.88
Discharge tube Ø25.4 Ø25.4 Ø22.22 Ø19.05 Ø15.88 Ø12.7
Liquid tube Ø19.05 Ø19.05 Ø15.88 Ø12.7 Ø9.52 Ø9.52
71.0 kW
Suction tube
Ø28.58
(Ø31.75)
Ø28.58
(Ø31.75)
Ø28.58 Ø25.4 Ø19.05 Ø15.88
Discharge tube Ø25.4 Ø25.4 Ø22.22 Ø19.05 Ø15.88 Ø12.7
Liquid tube Ø19.05 Ø19.05 Ø15.88 Ø12.7 Ø9.52 Ø9.52
*1
If anticipating future expansion, select tube diameters according to total capacity after expansion.
*2
If the maximum tubing length exceeds 90 m (equivalent length), increase the diameter of the main tubing to the size
in ( ) for both liquid and gas tubes. However, gas tube diameter should not exceed 31.75 mm. (Reducers are available
locally.)
*3 “–* *” in the table above means “** kW or less”
Table 2-3 Branching
⇔
solenoid valve kit tubes<3-tube side>
Tubing size (mm)
Suction tube Ø15.88
Discharge tube Ø12.7
Liquid tube Ø9.52
Table 2-4 Solenoid valve kit
⇔
indoor unit tubes <2-tube side>
Indoor unit
Unit Type 22-56 kW 71-160 kW
Equivalent Horsepower 0.8-2.0 2.5-6.0
Tubing size (mm)
Gas tube Ø12.7 Ø15.88
Liquid tube Ø6.35 Ø9.52
Tubing anchor
Gas Cut-off Valve Kit
SGP-VK32K (sold separately)
Gas tube (largest tube)
Liquid tube (small tube)
Main tube
Line anchor point
Fig. 7
Fig. 8
Room
Hallway Hallway
Indoor unit Indoor unit
Solenoid valve kit
Solenoid valve kit
Indoor unit Indoor unit
Room Room Room
(7) Plumbing separately purchased goods
● Gas Cut-off Valve Kit (for 2-WAY multi)
・
SGP-VK32K
The gas cut-off valve kit is installed in the refrigerant
gas tubes (largest tube) between the main tube and
outdoor units, as shown in Fig. 7.
* If a vibration-resistant frame is to be used, refer to
the chapter, using a Vibration-Resistant Frame.
● Solenoid Valve Kit (for 3-WAY multi)
・
ATK-RZP56BGB
・
ATK-RZP160BGB
①
Install the solenoid valve kit at a point within 30 m
of the indoor unit.
②
For places where quiet is an important
consideration, such as hospitals, libraries, hotels,
etc., we recommend installing the solenoid valve
kit away from rooms, such as in the ceilings of
hallways, to avoid annoyance due to refrigerant
noise.
③
Install an inspection port near the solenoid valve
kit so it can be serviced.
00-Installation̲All.indb 8 00-Installation̲All.indb 8 2012/09/07 9:32:39 2012/09/07 9:32:39