Sanyo CHX03652 - Manual (Page 23)

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Design of Mini ECO-i SYSTEM
2-7. Additional Refrigerant Charge
Additional refrigerant charge amount is calculated from the liquid tubing total length as follows.
Table 2-8 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
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.
Table 2-9 Refrigerant Charge Amount at Shipment (for outdoor unit)
2-8. System Limitations
Table 2-10 System Limitations
Number of max. connectable indoor units
Outdoor units (Type) CHX03652
6
CHX06052
9
Max. allowable indoor/outdoor capacity ratio 50 130%
Heat pump unit
(Single-phase)(oz)
CHX03652
123
CHX06052
123
2-9. Tubing Length
R410A distribution joint
APR-P160BA (for indoor unit)
Note: Do not use commercially available T-joints for the liquid tubing.
H2
LD
L1
L2
LC LB
LA
* Be sure to use special R410A distribution joints (APR: purchased separately) for outdoor
unit connections and tubing branches.
Main tube of unit
1st branch
Unit distribution tube
1 2 3 n-1
n
L3
H1
Select the installation location so that the length and size of refrigerant tubing are within the allowable range shown
in the figure below.
2. System Design