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System Design
5. Outdoor unit positioning requirements
D-23
2) Calculate the area of air inflow from surroundings
Calculate the effective inflow area, considering the effect of
surrounding walls.
a) Calculate effective inflow height Hwe
The calculation method depends on the type of wall. The two
types to consider are louvers, which allow air to pass, and
sound barrier walls, which do not.
i). Walls the permit air passage (including the case of no wall)
•
Use the following formula to calculate the height of inflow,
Ha
1
to Ha
4
(m) for each wall.
Ha = L
W
+ Hu + 1.5Ht + U
H
where
Ha = inflow height (m)
L
W
= Distance from wall to nearest outdoor unit (m)
However, when there is no wall, L
W
= 6.
(Refer to item (5) -[1]-1) for details of U
H
.)
•
Calculate effective inflow height Hwe (m) for each wall. Depending upon wall height and inflow
height Ha, apply one of the following formulae.
For Hw
≥
Ha, Hwe =(Ha – (H
U
+ H
H
+ Ht)) × Xw + (H
U
+ H
H
+ Ht) × Xw × 2
For Hw < Ha, Hwe =(Ha – Hw + [Hw – (H
U
+ H
H
+ Ht)] × Xw + (H
U
+ H
H
+ Ht) × Xw × 2
where Hw = Wall height (m)
Xw = Wall opening fraction
•
The wall height below the exhaust part (H
U
+ H
H
+ Ht) has twice the weighting of other parts
(inflow wind speed is doubled from 0.5 to 1 m/s).
•
When there is no wall, Hwe = Ha.
ii). Walls that block air passage
•
Use the following formula to calculate apparent heights Hb
1
to Hb
4
(m) for each wall.
Hb = Hw – H
U
– 1.5Ht
where Hb = Apparent height (m) of wall
Hw = Wall height (m)
•
For each wall, use the diagram at the right to obtain the effective inflow heights Hwe
1
to Hwe
4
(m)
for each wall.
b) Calculate effective inflow length Le
From the effective inflow height Hwe calculated for each wall, calculate effective inflow lengths Le
1
to Le
4
.
•
Calculate the effective distance from each boundary surface (wall) to the nearest unit, Lwei (m).
With no wall: Lwei = 6
If Lwi
≥
6m, then Lwei = 6
If Lwi < 6m, then Lwei = Lwei
•
Calculate effective inflow lengths Le
1
to Le
4
(m) for each wall.
Le
1
=L
N
+Lwe
4
+Lwe
2
Le
2
=L
M
+Lwe
3
+Lwe
1
Le
3
=Le
1
Le
4
=Le
2
c) Calculate effective inflow area
From effective inflow heights Hwe
1
to Hwe
4
and lengths Le
1
to Le
4
, calculate the effective inflow area
for each wall.
i) Calculate effective inflow area Se
1
to Se
4
(m) for each wall.
Se
1
=Hwe
1
×Le
1
Se
2
=Hwe
2
×Le
2
Se
3
=Hwe
3
×Le
3
Se
4
=Hwe
4
×Le
4
ii) Calculate the overall effective inflow area, Set (m
2
).
Set=Se
1
+Se
2
+Se
3
+Se
4
iii) Calculate the areas of adjoining surfaces.
Se
12
=Se
1
+Se
2
Se
23
=Se
2
+Se
3
Se
34
=Se
3
+Se
4
Se
41
=Se
4
+Se
1
Summary of Contents for ECO G SGP-EW120M2G2W
Page 3: ...A 1 System Configuration Contents 1 Type Configuration 1 Outdoor unit A 2 ...
Page 12: ...Outdoor Unit 3 External Dimensions B 8 ...
Page 13: ...Outdoor Unit 4 Wiring Diagram B 9 ...
Page 14: ...Outdoor Unit 5 Performance Characteristics B 10 Cooling Heating SGP EW120M2G2W ...
Page 15: ...Outdoor Unit 5 Performance Characteristics B 11 Cooling Heating SGP EW150M2G2W ...
Page 16: ...Outdoor Unit 5 Performance Characteristics B 12 Cooling Heating SGP EW190M2G2W ...
Page 17: ...Outdoor Unit 5 Performance Characteristics B 13 Cooling Heating SGP EW240M2G2W ...
Page 18: ...Outdoor Unit 6 Operating Sound Level Characteristics B 14 1 Standard Mode ...
Page 19: ...Outdoor Unit 6 Operating Sound Level Characteristics B 15 ...
Page 20: ...Outdoor Unit 6 Operating Sound Level Characteristics B 16 ...
Page 21: ...Outdoor Unit 6 Operating Sound Level Characteristics B 17 ...
Page 22: ...Outdoor Unit 6 Operating Sound Level Characteristics B 18 2 Quiet Mode ...
Page 23: ...Outdoor Unit 6 Operating Sound Level Characteristics B 19 ...
Page 24: ...Outdoor Unit 6 Operating Sound Level Characteristics B 20 ...
Page 25: ...Outdoor Unit 6 Operating Sound Level Characteristics B 21 ...
Page 28: ...Control Related 1 System Block Diagram C 2 ...
Page 29: ...Control Related 2 Remote Control Warning List C 3 ...
Page 30: ...Control Related 2 Remote Control Warning List C 4 ...
Page 31: ...Control Related 2 Remote Control Warning List C 5 ...
Page 76: ...Installation Work 1 Points regarding refrigerant pipe work E 3 APR P680BG ...
Page 77: ...Installation Work 1 Points regarding refrigerant pipe work E 4 APR P1350BG ...
Page 78: ...Installation Work 1 Points regarding refrigerant pipe work E 5 APR CHP680BG APR CHP1350BG ...
Page 86: ...Installation Work 2 Points regarding electrical work outdoor unit E 13 ...
Page 87: ...Installation Work 3 Outdoor unit installation work E 14 ...
Page 88: ...Installation Work 3 Outdoor unit installation work E 15 ...
Page 89: ...Installation Work 3 Outdoor unit installation work E 16 ...
Page 90: ...Installation Work 3 Outdoor unit installation work E 17 ...
Page 91: ...Installation Work 3 Outdoor unit installation work E 18 ...
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Page 93: ...Installation Work 3 Outdoor unit installation work E 20 ...
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Page 95: ...Installation Work 3 Outdoor unit installation work E 22 ...
Page 96: ...Installation Work 3 Outdoor unit installation work E 23 ...
Page 97: ...Installation Work 3 Outdoor unit installation work E 24 ...
Page 98: ...Installation Work 3 Outdoor unit installation work E 25 ...
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Page 103: ...Installation Work 3 Outdoor unit installation work E 30 ...
Page 104: ...Installation Work 3 Outdoor unit installation work E 31 ...
Page 105: ...Installation Work 3 Outdoor unit installation work E 32 ...
Page 106: ...Installation Work 3 Outdoor unit installation work E 33 ...