Sanyo SPW-CR485GXH8 - Additional Refrigerant Charge; System Limitations; Tubing Length

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Design of Mini ECO-i SYSTEM
2. System Design
2-7. Additional Refrigerant Charge
Additional refrigerant charge amount is calculated from the liquid tubing total length as follows.
Table 2-7 Amount of Refrigerant Charge Per Meter, According to Liquid Tubing Size
Liquid tubing size Amount of refrigerant
charge/m (g/m)
ø6.35 26
ø9.52 56
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 2-8 Refrigerant Charge Amount at Shipment (for outdoor unit)
2-8. System Limitations
Table 2-9 System Limitations
Number of max. connectable indoor units
Outdoor units (Type)
365
6
485
8
605
9
Max. allowable indoor/outdoor capacity ratio
50 130%
Heat pump unit
SPW-CR365GXH56
3.5
SPW-CR365GX56
3.5
SPW-CR485GXH56
3.5
SPW-CR485GX56
3.5
SPW-CR605GXH56
3.5
SPW-CR605GX56
3.5
(kg)
(kg)
Cooling only unit
2-9. Tubing Length
R410A distribution joint
APR-RP160AG (for indoor unit)
Note: Do not use commercially available T-joints for the liquid tubing.
H2
LD
L1
L2
LCLB
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.
06-405 Mini-ECOi_TD2 11/6/06 5:14 PM Page 15