System Design; Selection Conditions; Preliminary Selection; Outdoor Unit Changes - Sanyo SPW-C0705DZH8 Technical Data Manual

2. System Design

2-1. System Example
(1) Below are the tables created using the "Sanyo PAC/GHP System Diagram Software."
Details of the calculations are shown in (2).
Outdoor
unit 1
Elevation
difference: 10 m

Selection conditions

Assumes that installation is in a 50 Hz region.
Air condition
(DB/WB)
Cooling
Max. load (kW)
1
Air condition
(DB/WB)
Heating
Max. load (kW)
Actual tubing length
Equivalent length (with
consideration for curves, etc.)
2

Preliminary selection

Selected model
3
Load (cooling/heating) (kW)
Rated capacity
(cooling/heating) (kW)
[5] Corrected capacity
(cooling/heating) (kW)
[7] Actual capacity
4
(cooling/heating) (kW)
Total corrected capacity of indoor units (cooling/heating) = 48.65/55.76
Ruc = 48.65/55.3 = 0.880 < 1

Outdoor unit changes

During heating, the corrected outdoor unit capacity is less than the total corrected capacity of all indoor units
5
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.
Selected model
Maximum load
6
(cooling/heating) (kW)
Rated capacity
(cooling/heating) (kW)
(5) Corrected capacity
(cooling/heating) (kW)
7
(7) Actual capacity
(cooling/heating) (kW)
Total corrected capacity of all indoor units (cooling/heating) = 48.65/55.76
Ruc = 48.65/59.36 = 0.820 < 1
8
Outdoor
unit 2
50 m
10 m
10 m
Indoor Indoor
unit 1 unit 2
Room 1
Outdoor unit
(indoor unit 1) (indoor unit 2) (indoor unit 3 ) (indoor unit 4)
33.0 / 22.5 26.0 / 18.0
15.0
3.0 / 2.0 21.0 / 13.0
16.0
100 m 60 m
120 m 72 m
Room 1
Outdoor unit (indoor unit 1) (indoor unit 2)
Type 220 Type 60
15.0
68.0 / 76.5
16.0 / 18.0
55.3 / 54.86 16.00 / 18.00
16.00 / 17.74
Ruh = 55.76/54.86 = 1.164 > 1
Room 1
Outdoor unit
(indoor unit 1) (indoor unit 2) (indoor unit 3) (indoor unit 4)
Type 60
Type 230
15.0
73.0 / 81.5 16.0 / 18.0
59.36 / 58.45
16.00 / 18.00
16.00 / 18.00
Ruh = 55.76/58.45 = 0.954 < 1
20 m 20 m
10 m 10 m
Indoor Indoor
unit 3 unit 4
Room 2 Room 3
26.0 / 18.0 26.0 / 18.0
13.0 13.0
21.0 / 13.0 21.0 / 13.0
14.5 14.5
70 m 90 m
84 m 108 m
Room 2 Room 3
(indoor unit 3
Type 48 Type 48
13.0 13.0
14.0 / 16.0 14.0 / 16.0
14.00 / 16.00 13.42 / 15.69
14.00 / 15.77 13.42 / 15.46
Room 2 Room 3
Type 48 Type 48
13.0 13.0
14.0 / 16.0 14.0 / 16.0
14.00 / 16.00 13.42 / 15.69
13.42 / 15.69
14.00 / 16.00
2-18
Design of 3-WAY ECO-i SYSTEM
Solenoid valve kit
Room 4
26.0 / 18.0
5.5
21.0 / 13.0
6.2
100 m
120 m
Room 4
) (indoor unit 4)
Type 18
5.5
5.6 / 6.3
5.23 / 6.07
5.23 / 5.98
Room 4
Type 18
5.5
5.6 / 6.3
5.23 / 6.07
5.23 / 6.07