Sanyo SPW-CR605GXH8 - Outdoor Unit Changes; Preliminary Selection; Selection Conditions; System Example

2
2 - 17
Design of Mini ECO-i SYSTEM
2-11. System Example
(1) Below are the tables created using the “Sanyo PAC/GHP System Diagram Software.”
Details of the calculations are shown in (2).
Selection conditions
Assumes that installation is in a 50 Hz region.
Outdoor unit
Room 1
(indoor unit 1)
Room 2
(indoor unit 2)
Room 3
(indoor unit 3)
Room 4
(indoor unit 4)
Air condition
(DB/WB)
Cooling
Max. load (kW)
Air condition
(DB/WB)
Heating
Max. load (kW)
Actual tubing length
Equivalent length (with
consideration for curves,
etc.)
Preliminary selection
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-CR485GXH56 Type 18 Type 7 Type 7 Type 7
Type 18 Type 7 Type 7 Type 7
Load (cooling/heating) (kW)
Rated capacity
(cooling/heating) (kW)
(5) Corrected capacity
(cooling/heating) (kW)
(7) Actual capacity
(cooling/heating) (kW)
Total corrected capacity of indoor units (cooling/heating) = 11.96 / 12.91
Ruc = 11.96 / 11.17 = 1.071 > 1 Ruh = 12.91 / 13.20 = 0.978 < 1
33.0 / 22.5
14.0 / 16.0
16.0 / 18.0
11.17 / 13.20
12.77 / 14.85
5.60 / 5.96
5.60 / 5.96
5.60 / 5.96
5.32 / 5.96 2.09 / 2.35 2.00 / 2.31
2.20 / 2.35
2.20 / 2.35
2.20 / 2.35
2.11 / 2.31
2.11 / 2.31
2.11 / 2.31
2.05 / 2.29
2.05 / 2.29
2.05 / 2.29
1.95 / 2.29
3.0 / 2.0 21.0 / 13.0 21.0 / 13.0 21.0 / 13.0 21.0 / 13.0
26.0 / 18.0
5.6 / 6.3
5.6 / 6.3
2.2 / 2.5
2.2 / 2.5
2.2 / 2.5
2.2 / 2.5
2.2 / 2.5
2.2 / 2.5
26.0 / 18.0 26.0 / 18.0 26.0 / 18.0
5.4 1.8 2.1 2.1
5.4 / 5.6 1.8 / 2.3 2.1 / 2.3 2.1 / 2.3
5.4 / 5.6 1.8 / 2.3 2.1 / 2.3 2.1 / 2.3
2.32.32.35.6
100 m
120 m 72 m 84 m 108 m 120 m
100 m90 m70 m60 m
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)
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) = 11.96 / 12.91
Ruc = 11.96 / 12.77 = 0.937 < 1 Ruh = 12.91 / 14.85 = 0.869 < 1
Outdoor unit changes
Selected model SPW-CR485GXH56 Type 18 Type 7 Type 7 Type 7
During heating, the corrected outdoor unit capacity is less than the total corrected capacity of all indoor units
in the system. As a result, the actual capacity of each indoor unit is less than the maximum load. Therefore
the outdoor unit is increased by one rank.
Indoor
unit 1
10 m
10 m
Indoor
unit 2
10 m
Indoor
unit 3
10 m
Indoor
unit 4
50 m
20 m 20 m
Outdoor
unit
Elevation
difference: 10 m
2. System Design
06-405 Mini-ECOi_TD2 11/6/06 5:14 PM Page 17