System design – Sanyo DHX4852 User Manual
Page 30
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Design of W-2WAY ECO-i SYSTEM Unit Specifications
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Additional refrigerant charge before extension
Liquid tube
diameter
Tubing length (ft)
(A)
Additional refrigerant charge
per 1 ft (oz/ft) (B)
(A) × (B) oz
La
ø1/2
6.6
1.38
9.055
Lb
ø3/8
65.6
0.602
39.501
LA
ø3/4
26.2
2.78
72.966
LB
ø1/2
19.7
1.38
27.165
LC
ø1/2
19.7
1.38
27.165
LD
ø1/2
19.7
1.38
27.165
LE1
ø3/8
16.4
0.602
9.875
LG
ø5/8
26.2
1.99
52.231
LH
ø3/8
13.1
0.602
7.900
L1
ø3/8
9.8
0.602
5.925
L2
ø1/4
9.8
0.279
2.746
L3
ø1/4
9.8
0.279
2.746
L7
ø3/8
9.8
0.602
5.925
L8
ø1/4
9.8
0.279
2.746
L9
ø1/4
13.1
0.279
3.661
Total (oz)
296.775
297 oz
Additional refrigerant charge after extension
Liquid tube
diameter
Tubing length (ft)
(A)
Additional refrigerant charge
per 1 ft (oz/ft) (B)
(A) × (B) oz
LE2
ø3/8
13.1
0.602
7.900
LF
ø3/8
16.4
0.602
9.875
L4
ø3/8
13.1
0.602
7.900
L5
ø3/8
19.7
0.602
11.850
L6
ø1/4
23.0
0.279
6.407
Total (oz)
43.934
44 oz
Calculation of additional refrigerant charge for the entire 2-WAY ECO-i system
(Additional refrigerant charge for entire 2-WAY ECO-i system)
= (Refrigerant charge at outdoor unit) + (Additional refrigerant charge)
= 881 + 341 = 1222 oz (after extension)
[Before extension: 458 + 297 = 755 oz]
2. System Design
TD831138-02_W-2WAY.indb 20
2007/07/26 14:30:43