Panasonic S-15MK2E5A - Page 8

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Table 2-2 : Values of indoor unit
Type
Rated Capacity
15 22 28 36 45 56 60 71/73 90 106 140 160 180 224 280
D1–– 0.117 –0.145–––––––
L1– 0.129 –0.193–––––––
U1 – 0.175 0.197 0.263 – – –
Y2 0.130 0.134 ––––––––– K1–––– 0.153 –0.216–0.216––––– K2 0.097 –––––––––––
T2 – – – 0.161 – 0.231 – 0.301 – – – – F2 0.154 0.205 0.308 – – –
M1 0.098 –––––––––
P1 – 0.122 0.195 0.197 – 0.197 – – – – – – –
R1 – 0.122 0.195 0.197 – 0.197 – – – – – – –
E2–––––––––––– 0.4780.637
Table 2-3 : Liquid tube size-up condition of main tube (LM)
Total value of indoor unit
 1.200 1.200 <
Main tube (LM)
Liquid tubing size
No need to rank up. Need to increase by 1 rank.
1-6. Tubing Size ■
Table 3 : Main Tubing Size (LA)
kW 22.4 28.0
Outdoor unit horsepower 8 HP 10 HP
Gas tube
ø19.05 ø22.22
Flare connection Brazing connection
Liquid tube
ø9.52
Flare connection
* If future extension is planned, select the tubing diameter based on the total horsepower
after extension.
* The refrigerant tubing should be used with R410A refrigerant. * If the length of the longest tube (L1) exceeds 90 m (equivalent length), increase the main tubing (LM) size by 1 rank for the
gas and liquid tubes. Select from Table 3 and Table 7. Use field-supply reducers.
* If the longest main tubing length (LM) exceeds 50 m, increase the main tubing size at the portion before 50 m by 1 rank for the
gas tubes.
For the portion that exceeds 50 m, set based on the main tubing size (LA) listed in the table above.
■ Table 4 : Main Tubing Size After Distribution (LB, LC...)
Total capacity
after distribution
Below kW
7.1
(2.5 HP)
16.0
(6 HP)
22.5
(8.1 HP)
–
Over kW –
7.1
(2.5 HP)
16.0
(6 HP)
22.5
(8.1 HP)
Tubing size
Gas tube ø12.7 ø15.88 ø19.05 ø22.22
Liquid tube
ø9.52 ø9.52 ø9.52 ø9.52
Note: In case the total capacity of indoor units connected after distribution exceeds the capacity of the outdoor unit, select the main
tubing size for the capacity of the outdoor unit.
■ Table 5 : Indoor Unit Tubing Connection Size
Indoor unit type 15 22 28 36 45 56 60 73 90 106 140 160 180 224 280 Gas tube (mm) ø12.7 ø15.88 ø19.05 ø22.22 Liquid tube (mm) ø6.35 ø9.52
Unit: mm
Unit: mm
Gas tube
Liquid tube
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1-7. Straight Equivalent Length of Joints Design the tubing system by referring to the following table for the straight equivalent length of joints. Table 6 : Straight Equivalent Length of Joints
Gas tubing size (mm) 12.7 15.88 19.05 22.22 25.4 90° elbow 0.30 0.35 0.42 0.48 0.52 45° elbow 0.23 0.26 0.32 0.36 0.39 U-shape tube bent (R60-100 mm) 0.90 1.05 1.26 1.44 1.56 Trap bend 2.30 2.80 3.20 3.80 4.30 Y-branch distribution joint Equivalent length conversion not needed. Ball valve for service Equivalent length conversion not needed.
Table 7 : Refrigerant Tubing
Tubing size (mm)
Material Temper - O Material Temper - 1/2 H • H
ø6.35 t0.8 ø22.22 t1.0 ø9.52 t0.8 ø25.4 t1.0 ø12.7 t0.8
ø15.88 t1.0 ø19.05 t1.2
1-8. Additional Refrigerant Charge Additional refrigerant charge amount is calculated below.
Required amount of additional refrigerant charge = [ (Amount of additional refrigerant charge per meter of each size of liquid tube × its tube length) + (...) + (...) ]
*Always charge accurately using a scale for weighing. * If the total amount of refrigerant for the system exceeds 24 kg, change the size of the tubing to reduce the amount of refrigerant.
Table 8 : Amount of Additional Refrigerant Charge Per Meter, According to Liquid Tubing Size
Liquid tubing size (mm) 6.35 9.52 12.7 Amount of additional refrigerant charge/m (g/m)
26 56 128
Table 9 : Refrigerant Charge Amount at Shipment (for Outdoor Unit)
8 HP 10 HP
6.3 k
g
6.6 k
g
* When bending the tubes, use a bending
radius that is at least 4 times the outer diameter of the tubes. In addition, take sufficient care to avoid crushing or damaging the tubes when bending them.
* Use the material of temper - 1/2 H or - H
for tubing ø22.22 or more.
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