Sanyo CHDZ09053 - Manual (Page 15)

2-5
Design of W-3WAY ECO-i SYSTEM Unit Specifi cations
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1. Model Selecting and Capacity Calculator
Refrigerant Charge Amount at Shipment (for outdoor unit)
CHDZ09053 CHDZ14053
DC CHDZR09053 CHDZR14053
(oz)
416 416
System Limitations
Max. No. allowable connected outdoor units 2 *1
Max. capacity allowable connected outdoor units 307,200 BTU/h (32 hp, 90 kW)
Max. connectable indoor units 40
Max. allowable indoor/outdoor capacity ratio 50 – 130 %
*1: Up to 2 units can be connected if the system has been extended.
Additional Refrigerant Charge
Additional refrigerant charge amount is calculated from the liquid tubing total length as follows.
Amount of Refrigerant Charge Per Meter, According to Liquid Tubing Size
Liquid tubing size Amount of refrigerant
(in. (mm)) charge (oz/ft.)
ш1/4" (ш6.35) 0.279
ш3/8" (ш9.52) 0.602
ш1/2" (ш12.7) 1.38
ш5/8" (ш15.88) 1.99
ш3/4" (ш19.05) 2.78
ш7/8" (ш22.22) 3.93
Required amount of charge = Necessary Amount of Refrigerant
Charge Per Unit + (Amount of refrigerant charge per meter of
each size of liquid tube × its tube length) + (...) + (...)
* Always charge accurately using a scale for weighing.
Table 2-1-1 Necessary Amount of Refrigerant Charge Per Unit
CHDZ09053
CHDZR09053
CHDZ14053
CHDZR14053
— 113 oz/unit