Panasonic ECOi 3 Way Manual de instalación descargar pdf (Pagina 10)

* 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.

Required amount of additional refrigerant charge =

[ (Amount of additional refrigerant charge per ft. of

each size of liquid tube × its tube length) + (...) + (...)]

+ [(Necessary amount of additional refrigerant charge

per outdoor unit + (...) + (...)]

* Always charge accurately using a scale for weighing.

Table 1-6 Refrigerant Charge Amount at Shipment (for outdoor unit)

(oz)

U-72MF1U9

U-72MF1U9E

U-96MF1U9

U-96MF1U9E

416 416

Table 1-7 Indoor Unit Tubing Connection Size ( 1 – 40)

Unit: in. (mm)

Indoor unit type 7 9 12 15 18 19 24 36 48 54

Distribution

joint-solenoid

valve kit tubing

Suction tubing ø5/8" (ø15.88)

Discharge tubing ø1/2" (ø12.7)

Liquid tubing ø3/8" (ø9.52)

Solenoid valve

kit-Indoor unit

tubing

connection

Gas tubing ø1/2" (ø12.7) ø5/8" (ø15.88)

Liquid tubing ø1/4" (ø6.35) ø3/8" (ø9.52)

*1: For the solenoid valve kits, use type 160 with parallel speciﬁ cations. Branch the tubing before and after the solenoid valve kits.

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 1-8 Straight Equivalent Length of Joints

Gas tubing size (in.(mm))

1/2"

(12.7)

5/8"

(15.88)

3/4"

(19.05)

7/8"

(22.22)

(25.4)

1-1/8"

(28.58)

1-1/4"

(31.8)

1-1/2"

(38.1)

90° elbow

1 ft.

(0.30 m)

1.1 ft.

(0.35 m)

1.4 ft.

(0.42 m)

1.6 ft.

(0.48 m)

1.7 ft.

(0.52 m)

1.9 ft.

(0.57 m)

2.3 ft.

(0.70m)

2.6 ft.

(0.79 m)

45° elbow

0.8 ft.

(0.23 m)

0.9 ft.

(0.26 m)

1 ft.

(0.32 m)

1.2 ft.

(0.36 m)

1.3 ft.

(0.39 m)

1.4 ft.

(0.43 m)

1.7 ft.

(0.53 m)

1.9 ft.

(0.59 m)

U-shape tube bent

(R2–23/64–3–15/16 in.)

3 ft.

(0.90 m)

3.4 ft.

(1.05 m)

4.1 ft.

(1.26 m)

4.7 ft.

(1.44 m)

5.1 ft.

(1.56 m)

5.6 ft.

(1.71 m)

6.9 ft.

(2.10 m)

7.8 ft.

(2.37 m)

Trap bend

7.5 ft.

(2.30 m)

9.2 ft.

(2.80 m)

10.5 ft.

(3.20 m)

12.5 ft.

(3.80 m)

14.1 ft.

(4.30 m)

15.4 ft.

(4.70 m)

16.4 ft.

(5.00 m)

14.0 ft.

(5.80 m)

Y-branch distribution joint

Equivalent length conversion not needed.

Ball valve for service Equivalent length conversion not needed.

Table 1-9 Refrigerant tubing (Existing tubing can be used.)

Tubing size (in. (mm))

Material O Material 1/2H • H

ø1/4" (ø6.35) t1/32 (t0.8)

ø3/8" (ø9.52) t1/32 (t0.8) ø1-1/8" (ø28.58) t5/128 (t1.0)

ø1/2" (ø12.7) t1/32 (t0.8) ø1-1/4" (ø31.75) t3/64 (t1.1)

ø5/8" (ø15.88) t5/128 (t1.0) ø1-1/2" (ø38.10) over t3/64 (t1.15)

ø3/4" (ø19.05) over t5/128 (t1.0) ø1-5/8" (ø41.28) over t3/64 (t1.20)

ø7/8" (ø22.22) t5/128 (t1.0)

1-8. Additional Refrigerant Charge

Additional refrigerant charge amount is calculated from the liquid tubing total length and a type of outdoor unit as

follows.

Table 1-10-1 Amount of Refrigerant Charge Per ft.,

According to Liquid Tubing Size

Liquid tubing

size

ø1/4"

(ø6.35)

ø3/8"

(ø9.52)

ø1/2"

(ø12.7)

ø5/8"

(ø15.88)

ø3/4"

(ø19.05)

ø7/ 8"

(ø22.22)

Amount of

refrigerant

charge (oz/ft.)

0.279 0.602 1.38 1.99 2.78 3.93

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Panasonic ECOi 3 Way Manual de instalación Pagina 10

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