Panasonic U-16GE2E5 Test Run Manual page 6

Selecting ball valves
Valve connection tube diameter (mm)
Model Type No.
SGP-BV710K
SGP-BV450K
SGP-BV355K
SGP-BV450M
BV-RXP335AGB
BV-RXP280AGB
BV-RXP224AGB
BV-RXP160AGB
BU-RXP56AGB
BV-RP3GB
Note 1. The ID of these valves is about the same as that of the connecting copper tube, so no correction for pressure
loss is necessary.
Note 2. Leakage pressure rating must be at least 4.15 MPa.
*1. Select a size that does not exceed header size.
*2. Even for 5.6 kW or less, if the indoor unit tubing branches, use 15.88 mm diameter gas tube.
(3) Selecting header tubing
[Anticipating additional indoor units]
1) Ball valve installation position: Install on main tubing after branching.
2) Installation guidelines
• Slope main tubes after branches so as to prevent oil buildup.
• Locate ball valves as close as possible to (within 40 cm) of their branch points.
• If the tube diameter at the ball valve is smaller than that of the main tube after branching, install reducers only at
the ball valve connections.
• Locate the equipment where it will be easy to operate and inspect in the future.
Caution
When installing indoor tubing (including that for future indoor expansion) along a main tube after a branch, be
sure to position service ports to face in the direction of their units (see dashed lines in the example above).
*1
Gas Liquid
φ 31.75 φ 19.05
φ 28.58 φ 19.05
φ 28.58 φ 15.88
φ 28.58 φ 12.7
φ 25.4 φ 12.7
φ 22.22 φ 9.52
φ 19.05 φ 9.52
φ 15.88 φ 9.52
φ 12.7 *2 φ 6.35
Applicable outdoor
unit
Balance
Type 710
-
(over 90 m)
- -
- Type 710 or 560
- Type 450
- Type 355
- -
- -
- -
- -
φ 9.52
For balance tube
I - 4
Applicable indoor unit
Total indoor unit capacity through
valve
Over 72.8 kW to 101.0 kW
Over 35.5 kW to 72.8 kW
Over 45.0 kW to 72.8 kW
Over 35.5 kW to 45.0 kW
Over 28.0 kW to 35.5 kW
Over 22.4 kW to 28.0 kW
Over 16.0 kW to 22.4 kW
Over 5.6 kW to 16.0 kW
5.6 kW or less