System Design - Sanyo ECO-i AHX0752 Technical Data Manual

2. System Design

2-1. System Example
(1) Below are the tables created using the "Sanyo PAC System Diagram Software." Details of the calculations are shown in (2).
Elevation
difference: 33 ft
Selection conditions
Assumes that installation is in a 60 Hz region.
Air condition (DB/WB)
Cooling
Max. load (BTU/h)
Air condition (DB/WB)
Heating
Max. load (BTU/h)
1
Actual tubing length
Equivalent length (with consideration
for curves, etc.)
Preliminary selection
2
Selected model
Load (cooling/heating) (BTU/h)
Rated capacity
3
(cooling/heating) (BTU/h)
(5) Corrected capacity (cooling/
heating) (BTU/h)
(7) Actual capacity
(cooling/heating) (BTU/h)
4
Total corrected capacity of indoor units (cooling/heating) = 145,200/168,700
Ruc = 145,200/159,600 = 0.910 < 1 Ruh = 168,700/156,100 = 1.081 > 1
Outdoor unit changes
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.
5
Selected model
Maximum load
(cooling/heating) (BTU/h)
6
Rated capacity
(cooling/heating) (BTU/h)
(5) Corrected capacity (cooling/
heating) (BTU/h)
(7) Actual capacity
(cooling/heating) (BTU/h)
7
Total corrected capacity of all indoor units (cooling/heating) = 145,200/163,700
Ruc = 145,200/208,100 = 0.698 < 1 Ruh = 168,700/201,900 = 0.835 < 1
8
Outdoor Outdoor
unit 1 unit 2
164 ft
33 ft
33 ft
Indoor
unit 1
Outdoor unit
91.0 / 72.0
37.0 / 35.0
296 ft
365 ft
Outdoor unit
Type
09053+09053
191,000 /
215,000
159,600 /
156,100
Outdoor unit
Type
14053+09035
249,100 /
278,100
208,100 /
201,900
Design of W-3WAY ECO-i SYSTEM Unit Specifi cations
33 ft 66 ft
33 ft 33 ft
Indoor Indoor
unit 2 unit 3
Room 1 Room 2
(indoor unit 1) (indoor unit 2)
78.0 / 64.0 78.0 / 64.0
40,000 40,000
69.0 / 55.0 69.0 / 55.0
46,000 46,000
197 ft 230 ft
236 ft 276 ft
Room 1 Room 2
(indoor unit 1) (indoor unit 2)
Type 4852 Type 4852
40,000 40,000
47,800 / 47,800 /
54,600 54,600
47,400 / 46,300 /
54,600 54,600
47,400 / 46,300 /
50,900 50,900
Room 1 Room 2
(indoor unit 1) (indoor unit 2)
Type 4852 Type 4852
40,000 40,000
47,800 / 47,800 /
54,600 54,600
47,400 / 46,300 /
54,600 54,600
47,400 / 46,300 /
54,600 54,600
2-18
Solenoid valve kit
Indoor
unit 4
Room 3 Room 4
(indoor unit 3) (indoor unit 4)
78.0 / 64.0 78.0 / 64.0
30,000 18,000
69.0 / 55.0 69.0 / 55.0
35,000 23,000
263 ft 296 ft
316 ft 365 ft
Room 3 Room 4
(indoor unit 3) (indoor unit 4)
Type 3652 Type 1852
30,000 18,000
36,000 / 19,000 /
39,000 21,000
34,000 / 17,500 /
38,900 20,600
34,000 / 17,500 /
36,300 19,200
Room 3 Room 4
(indoor unit 3) (indoor unit 4)
Type 3652 Type 1852
30,000 18,000
36,000 / 19,000 /
39,000 21,000
34,000 / 17,500 /
38,900 20,600
34,000 / 17,500 /
38,900 20,600