Straight Equivalent Length Of Joints; Additional Refrigerant Charge; System Limitations - Sanyo 85464359982001 Installation Instructions Manual

07-007 W-2WAY_II_NA 1/23/07

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 1-13 Straight Equivalent Length of Joints
Gas tubing size (in. (mm))
90° elbow
45° elbow
U-shape tube bent (R2-3/8" – 4" (60 – 100))
Trap bend
Y-branch distribution joint
Ball valve for service
Table 1-14 Refrigerant tubing (Existing tubing can be used.)
Material O
ø1/4" (ø6.35)
ø3/8" (ø9.52)
ø1/2" (ø12.7)
ø5/8" (ø15.88)
ø3/4" (ø19.05) over t5/128" (1.0)

1-8. Additional Refrigerant Charge

Additional refrigerant charge amount is calculated from the liquid tubing total length as follows.
Table 1-15 Amount of Refrigerant Charge Per Meter, According to Liquid Tubing Size
Liquid tubing size
(in. (mm))
ø1/4" (ø6.35)
ø3/8" (ø9.52)
ø1/2" (ø12.7)
ø5/8" (ø15.88)
ø3/4" (ø19.05)
ø7/8" (ø22.22)
Table 1-16 Refrigerant Charge Amount at Shipment (for outdoor unit)
CHDX09053
DC
(oz)

1-9. System Limitations

Table 1-17 System Limitations
Max. No. allowable connected outdoor units
Max. capacity allowable connected outdoor units
Max. connectable indoor units
Max. allowable indoor/outdoor capacity ratio
*1: Up to 2 units can be connected if the system has been extended.
6:09 PM Page 13
1/2"
(12.7)
1
0.8
3
7.5
Tubing size (in. (mm))
Material 1/2H • H
t1/32" (0.8) ø7/8" (ø22.22)
t1/32" (0.8) ø1" (ø25.40)
t1/32" (0.8) ø1-1/8" (ø28.58)
t5/128" (1.0) ø1-1/4" (ø31.75)
ø1-1/2" (ø38.10)
ø1-5/8" (ø41.28)
Amount of refrigerant
charge (oz/ft.)
0.279
0.602
1.38
1.99
2.78
3.93
CHDX14053
423
5/8" 3/4" 7/8" 1"
(15.88) (19.05) (22.22) (25.4)
1.1 1.4 1.6 1.7
0.9 1 1.2 1.3
3.4 4.1 4.7 5.1
9.2 10.5 12.5 14.1
Equivalent length conversion not needed.
Equivalent length conversion not needed.
* When bending the tubes, use a bending
radius that is at least 4 times the outer
diameter of the tubes.
t5/128" (1.0)
In addition, take sufficient care to avoid
t5/128" (1.0)
crushing or damaging the tubes when
t5/128" (1.0)
bending them.
t3/64" (1.1)
over t3/64" (1.15)
over t3/64" (1.20)
Required amount of charge = (Amount of refrigerant charge per
meter of each size of liquid tube × its tube length) + (...) + (...)
* Always charge accurately using a scale for weighing.
* If the existing tubing is used, and the amount of on-site additional
refrigerant charge exceeds the value listed below, then change the
size of the tubing to reduce the amount of refrigerant.
Max. additional charge for 1 outdoor unit
Max. additional charge for 2 outdoor units : 111 lbs
Max. additional charge for 3 outdoor units : 133 lbs
458
2
*1
307,100 BTU/h (32 hp, 90 kW)
40
50 – 130 %
13
Unit: ft.
1-1/8" 1-1/4" 1-1/2"
(28.58) (31.8) (38.1)
1.9 2.3 2.6
1.4 1.7 1.9
5.6 6.9 7.8
15.4 16.4 14.0
: 62 lbs