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For example
:
outdoor unit 72 + 96, cooling indoor unit (12K x 6) + (18K x 6), T1 = 81
⁰
F, TS=70
⁰
F, T4=82
⁰
F
Max (T2A average, T2B average - 3) = 55
⁰
F.
T1 – TS = 81 – 70 = 11, so B = 3
T4 = 82, so C = 90%
Max (T2A average, T2B average = 55
⁰
F, so E = 3
QCi = ∑ (AxB) x C=
(
1.2 x 3 x 6 + 2.0 x 3 x 6
)
x 90% = 51.84
,
Round number
:
52
72 outdoor unit cooling capacity
:
QCo = QCix D /
∑D = 52 x 8 /
(
8 + 10
)
= 23.1
,
Round number
:
24
96 outdoor unit cooling capacity
:
QCo = QCix D /
∑D = 52 x 10 /
(
8 + 10
)
= 28.8
,
Round number
:
29
72 outdoor unit actual cooling capacity
:
QCr = QCo + E = 24 + 3 = 27
,
From the frequency table
:
70Hz
96 outdoor unit actual cooling capacity
:
QCr = QCo + E = 29 + 3 = 32
,
From the frequency table
:
80Hz
Table 8 -
Heating capacity calculation
Indoor unit
capacity (BTU)
Indoor unit
capacity x 100W
Indoor unit
capacity
(
HP
)
A
Indoor unit
capacity (BTU)
Indoor unit
capacity x 100W
Indoor unit capacity
(
HP
)
A
6000
15, 17
0.5
36000
112
4.0
7000
22, 25
0.8
42000
125
4.5
9000
28
1.0
48000
140
5.0
12000
32, 36
1.2
54000
160
6.0
13000
40
1.4
60000
180
6.5
15000
45, 50
1.7
66000
200
7.0
18000
56
2.0
72000
224, 252
8.0
21000
63
2.2
96000
280
10.0
24000
71
2.5
120000
335
12.0
27000
80
3.0
144000
400
14.0
30000
90
3.2
168000
450
16.0
33000
100
3.6
192000
560, 580
20.0
Ambient temperature T4
T4 < 20
⁰
F
20
⁰
F
≤ T4 < 32
⁰
F
32
⁰
F
≤ T4 < 50
⁰
F
T4 correction factor C
140%
120%
100%
Ambient temperature T4
50
⁰
F
≤ T4 < 63
⁰
F
63
⁰
F
≤ T4 < 77
⁰
F
77
⁰
F
≤ T4
T4 correction factor C
80%
60%
0
QHi: Total heating capacity of indoor units
QHi=∑(AxB) x C (Round number)
Capacity Zone
a
b
c
d
e
f
Factor B
3
2.5
2
1.5
0.5
0
24
Summary of Contents for 38VMA Series
Page 8: ...II Refrigerant Circuit 1 Refrigerant Circuit Diagram Figure 17 38VMA072 096 120HDS 8...
Page 9: ...Figure 18 38VMA144HDS 9...
Page 11: ...2 Functional Parts Layout Figure 19 38VMA072 096 120HDS 11...
Page 12: ...Figure 20 38VMA0144HDS 12...
Page 14: ...Figure 22 Cooling Oil Return 14...
Page 15: ...Figure 23 Heating Oil Return and Defrost 15...
Page 16: ...Figure 24 Heating Operation 16...
Page 17: ...b 38VMA144HDS Figure 25 Cooling Operation 17...
Page 18: ...Figure 26 Cooling Oil Return 18...
Page 19: ...Figure 27 Heating Oil Return and Defrost 19...
Page 20: ...Figure 28 Heating Operation 20...
Page 21: ...III Function and Control 1 Operation Mode Figure 29 Operation Mode 21...
Page 77: ...VIII Appendix 1 Wiring Diagram Figure 36 38VMA072 096 120HDS5 1 77...
Page 78: ...Figure 37 38VMA144HDS5 1 78...
Page 79: ...Figure 38 38VMA072 096 120HDS6 1 79...
Page 80: ...Figure 39 38VMA144HDS6 1 80...
Page 81: ...2 Electronic Control Box Layout Figure 40 38VMA072 096 120HDS5 1 Figure 41 38VMA144HDS5 1 81...
Page 82: ...Figure 42 38VMA072 096 120HDS6 1 Figure 43 38VMA144HDS6 1 82...
Page 83: ...Figure 44 Main control board layout Figure 45 ENC1 Outdoor unit addressing 83...
Page 84: ...Figure 46 ENC4 network addressing Figure 47 ENC3 S12 Indoor unit quantity setting 84...
Page 85: ...Figure 48 S5 Running mode priority setting Figure 49 S6 Auto addressing 85...
Page 86: ...Figure 50 S11 anti snow setting Figure 51 S16 Mode setting 86...
Page 87: ...Figure 52 S17 Heating mode setting Figure 53 S18 Cooling mode setting 87...
Page 93: ...Figure 55 Control Board Views 93...
Page 97: ...2 38VMA144HDS5 1 Figure 56 3 Phase Heat Pump Exploded View 97...
Page 98: ...98...
Page 99: ...Figure 57 Control Board Views 99...
Page 103: ...3 38VMA072HDS6 1 38VMA096HDS6 1 38VMA120HDS6 1 Figure 58 3 Phase Heat Pump Exploded View 103...
Page 104: ...Figure 59 Control Board Views 104...
Page 108: ...4 38VMA144HDS6 1 Figure 60 3 Phase Heat Pump Exploded View 108...
Page 109: ...109...