Sanyo CHX03652 - Manual (Page 26)

2-18
Design of Mini ECO-i SYSTEM
1
2
3
4
5
6
7
8
Outdoor unit
Room 1
(indoor unit 1)
Room 2
(indoor unit 2)
Room 3
(indoor unit 3)
Room 4
(indoor unit 4)
Selected model CHX06052
Maximum load
(cooling/heating) (BTU/h)
(cooling/heating) (BTU/h)
Rated capacity
(cooling/heating) (BTU/h)
(5) Corrected capacity
(cooling/heating) (BTU/h)
(7) Actual capacity
(cooling/heating) (BTU/h)
Total corrected capacity of all indoor units (cooling/heating) = 36,900 / 44,500
Ruc = 36,900 / 45,900 = 0.804 < 1 Ruh = 44,500 / 47,300 = 0.941 < 1
•For both cooling and heating in all rooms, actual capacity is now greater than or equal to the maximum
load. Selection is completed.
Indoor unit changes
Type 1252 Type 0752 Type 1252 Type 0752
12,000 / 14,000 52,900 / 60,000
10,000 / 12,000 7,000 / 8,400 7,000 / 8,400 7,000 / 8,400
7,500 / 8,500 7,500 / 8,500
12,000 / 14,000 52,900 / 60,000
1.00 / 1.00
1.020 / 0.937 0.920 / 0.980
0.851 / 0.946 1.000 / 1.000 1.062 / 1.020 1.012 / 1.004 1.037 / 1.012
0.920 / 0.980 0.920 / 0.980 0.920 / 0.980
7,500 / 8,500 7,500 / 8,500
12,000 / 14,000
12,000 / 14,000
45,900 / 47,300 11,700 / 14,000 7,200 / 8,400 7,000 / 8,400 11,000 / 13,700
11,700 / 14,000 7,200 / 8,400 7,000 / 8,400 11,000 / 13,700
Outdoor unit
Room 1
(indoor unit 1)
Room 2
(indoor unit 2)
Room 3
(indoor unit 3)
Room 4
(indoor unit 4)
Rated capacity
(1) Model
(2) Temp. condition
(3) Tubing length,
elevation difference
Correction coefficient
*1: This varies depending on the values of (2) and (2) × (Distribution ratio in (3)).
*2: Corrected outdoor unit capacity = Rated outdoor unit capacity Ч (1) Ч (2) Ч (3) Ч (4)
11,700 / 14,000
11,700 / 14,000
45,900 / 47,300
0.977 / 1.000 0.954 / 0.992 0.992 / 0.984 0.920 / 0.980
0.977 / 1.000 0.954 / 0.992
1.00 / 1.00
0.992 / 0.984 0.920 / 0.980
7,200 / 8,400 7,000 / 8,400 11,000 / 13,700
7,200 / 8,400 7,000 / 8,400 11,000 / 13,700
(4) Frosting • defrosting
Result of (2) × (3)
Correction coefficient
applied to indoor unit *1
(5) Corrected capacity (BTU/h) *2
(6) Correction coefficient
for corrected capacity
ratio
(7) Actual capacity (BTU/h)
— / 0.890
(2) Calculate the final selection results according to the capacity calculation procedure.
[From calculation of the correction coefficient to calculation of actual capacity] (Cooling/heating)
The indoor unit in room 4, where the corrected indoor unit capacity is less than the maximum load, is
increased by one rank.
The actual capacity is calculated as shown below.
Cooling: Ruc = (11,700 + 7,200 + 7,000 + 11,000) / 45,900 = 0.804 < 1
Therefore,
Actual cooling capacity of each indoor unit = Corrected cooling capacity of each indoor unit
(In other words, the correction coefficient [6] for the corrected capacity ratio is 1.)
Heating: Ruh = (14,000 + 8,400 + 8,400 + 13,700) / 47,300 = 0.941 < 1
Therefore,
Actual heating capacity of each indoor unit = Corrected heating capacity of each indoor unit
(In other words, the correction coefficient (6) for the corrected capacity ratio is 1.)
2. System Design