Technical data

2
2 - 15
Design of Mini Multiset
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 AES 04 MMIH
3.5
AES 04 MMIH
3.5
AES 05 MMIH
3.5
AES 05 MMIH
3.5
AES 06 MMIH
3.5
AES 06 MMIH
3.5
(kg)
(kg)
Cooling only unit
2-9. Tubing Length
R410A distribution joint
DDVI 16 (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 (DDVI: 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.