Sanyo SPW-CR605GXH8 - Page 26

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Design of Mini ECO-i SYSTEM
Outdoor unit
Room 1
(indoor unit 1)
Room 2
(indoor unit 2)
Room 3
(indoor unit 3)
Room 4
(indoor unit 4)
Selected model
SPW-CR605GXH56
Maximum load
(cooling/heating) (kW)
(cooling/heating) (kW)
Rated capacity
(cooling/heating) (kW)
(5) Corrected capacity
(cooling/heating) (kW)
(7) Actual capacity
(cooling/heating) (kW)
Total corrected capacity of all indoor units (cooling/heating) = 12.53 / 13.55
Ruc = 12.53 / 12.77 = 0.981 < 1 Ruh = 13.55 / 14.85 = 0.913 < 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 18 Type 7 Type 9Type 7
5.6 / 6.316.0 / 18.0
5.4 / 5.6 1.8 / 2.3 2.1 / 2.3 2.1 / 2.3
2.2 / 2.5 2.2 / 2.5
5.6 / 6.3
5.60 / 5.96
5.60 / 5.96
16.0 / 18.0
12.77 / 14.85
1.00 / 1.00
1.00 / 1.00 0.934 / 0.917
0.798 / 0.927 0.798 / 0.9270.882 / 0.956
0.944 / 1.198
1.032 / 0.964 1.008 / 0.940 0.959 / 0.924 0.934 / 0.917
0.922 / 1.190 0.877 / 1.170 1.000 / 1.000
1.000 / 0.946 1.000 / 0.940
1.00 / 1.00
0.959 / 0.924 0.934 / 0.917
0.819 / 0.9340.861 / 0.950
0.934 / 0.917 0.934 / 0.917 0.934 / 0.917
2.2 / 2.5
2.20 / 2.35
2.11 / 2.31 2.62 / 2.93
2.20 / 2.35 2.11 / 2.31 2.62 / 2.93
2.2 / 2.5
2.8 / 3.2
2.8 / 3.2
12.77 / 14.85
5.60 / 5.96
2.20 / 2.35 2.11 / 2.31 2.62 / 2.93
5.60 / 5.96
2.20 / 2.35 2.11 / 2.31 2.62 / 2.93
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
Distribution ratio
Correction coefficient
(4) Frosting • defrosting
Result of (2) × (3)
Correction coefficient
applied to indoor unit *1
(5)
Corrected capacity (kW) *2
(6) Correction coefficient
for corrected capacity
ratio
(7) Actual capacity (kW)
*1: This varies depending on the values of (2) and (2) × (Distribution ratio in (3)).
*2: Corrected outdoor unit capacity = Rated outdoor unit capacity × (1) × (2) × (3) × (4)
— / 0.89
(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 = (5.60 + 2.20 + 2.11 + 2.62) / 12.77 = 0.981 < 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 = (5.96 + 2.35 + 2.31 + 2.93) / 14.85 = 0.913 < 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
06-405 Mini-ECOi_TD2 11/6/06 5:14 PM Page 18