McQuay MDS300B Guía de instalación Pagina 55
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Design & installation Guide For McQuay MDS Multi System
■ If we know the heat performance index q
v
[W/(m
3
. ℃)] and outside volume V (m
3
), we can calculate the
heating load
as follows:
Q
total
= aq
v
V( t
n
– t
w
)
Where,
a is the correction factor. For details, see the table.
qv is the heat performance index of the building. It is the heating load when the difference between the
indoor temperature and the outdoor temperature is 1℃. For details, see the table.
V is the outside volume of the building. Its unit is m2.
(t
n
– t
w
) is the calculated difference between the indoor and outdoor temperatures. Its unit is℃.
Heating correction factor a:
Heating outdoor temperature（℃） a Heating outdoor temperature（℃） a
0 2.05 -25 1.08
-5 1.67 -30 1.00
-10 1.45 -35 0.95
-15 1.29 -40 0.9
-20 1.17
【Notes】
■ During selection, you must consider the attenuation of the following factors to the cooling and heating effects: 1)
the length of the pipe connecting the indoor unit and outdoor unit; 2) the difference between the actual
temperatures of the indoor and outdoor units and the rated working temperatures of the MDS for cooling/heating.
■ If the heating pump system is selected according to the cooling load, you must verify its heating capacity. Especially
for areas north to Yellow River, inadequate heating capacity must be compensated
with a model with an auxiliary electric heater or hot-water heater.
■ The MDS unit is designed following GB/T 18837-2002. There is a negative difference between the actual cooling
capacity and the rated capacity, about 5%. Therefore, you must pay enough attention to this factor and keep the cooling
capacity a certain security level.
Heat performance index of the building
Building type V (10
3
m
3
) q
v
W/m
3
℃ t
n
（℃）
Building type
V(10
3
m
3
) q
v
W/m
3
℃ t
n
（℃）
≤5 0.6 5～10 3.38
Office 5～10 0.53 18 Workshop 11～20 2.73 14
building 11～15 0.49 21～30 2.04
＞15 0.56 ＞31 1.45
≤5 0.72 ≤0.5 2.30
Club 5～10 0.65 16 Equipment 0.6～1.0 0.82 12
＞11 0.58 room 1.1～2.0 0.71
＞2.1 0.50
≤5 0.81 ≤0.5 0.83
Hospital 6～10 0.75 20 0.6～1.0 0.72 18
11～15 0.67
Auxiliary room
1.1～2.0 0.56
＞16 0.64 ＞2.1 0.51
≤5 0.92
6
～10 0.82 ≤2.0 0.72
Cinema 11～15 0.79 14 Engine 2.1～5.1 0.63 15
16～20 0.70 house
＞5.1 0.60
21～30 0.65
＞31 0.61
≤5 1.22 ≤5.0 1.49
Public area 6～10 1.14 14 Bathroom 5.1～10.0 1.38 25
＞11 1.05 ＞10 1.25
- CONTENTS 3
- Overview 4
- 1.2.3 System principle 6
- MDS080R、 MDS100BR、MDS120BR 7
- MDS150BR 7
- MDS200BR、MDS220BR、MDS240BR 8
- MDS180BR 8
- MDS280BR、MDS300BR 9
- MDS260BR 9
- 1.3 Main features 10
- 1.4 Nomenclature 12
- 1.5 Products Series 14
- 1.6 Performance Parameter 15
- 1.6.3 Ceiling cassette 16
- 1.6.5 Specification 17
- 1.6.6 Specification 18
- 1.7 Operating Range 19
- 1.8 Refnet 19
- 1.8.2 Distributor kit 20
- 1.9 Outline of Indoor Units 21
- 1.9.2 MDB050T 22
- 1.9.3 MDB060T 22
- 1.9.5 MCM020T、MCM030T、MCM050T 23
- 1.9.6 Auxiliary heating coil 24
- 1.10 Outline of Outdoor Units 25
- 1.10.3 MDS060A(R) 26
- 1.10.5 MDS150B(R) 27
- 1.10.8 MDS280B(R)、MDS300B(R) 28
- 1.10.7 MDS260B(R) 28
- Units Control 29
- 2.3.3 Wire control panel 33
- 2.3.4 Outline dimension 33
- 2.3.5 Installation type 33
- ■ concealed installation 33
- 2.5 Network Central Control 36
- 2.6 Wiring Diagram 37
- ■ Model MCK025/030/040/050T 38
- ■ MCM020/030T 38
- ■ Model MCM050T 39
- ■ Model MDB050/060T 39
- ■ Model MDS030A 40
- ■ Model MDS030AR 40
- ■ Model MDS040AR 41
- ■ Model MDS040A 41
- ■ Model MDS050A 42
- ■ Model MDS050AR 42
- ■ Model MDS060A 43
- ■ Model MDS060AR 44
- ■ Model MDS080/100/120B 45
- ■ Model MDS080/100/120BR 45
- ■ Model MDS150B 46
- ■ Model MDS150BR 46
- ■ Model MDS180B 47
- ■ Model MDS180BR 47
- ■ Model MDS200/220/240B 48
- ■ MDS200/220/240BR 48
- ■ Model MDS260BR 49
- ■ Model MDS260/280/300BR 49
- ■ Model MDS280/300BR 50
- 2.7 Wiring Diagram 51
- 2.7.3 MDS080～240B/BR 52
- 2.7.4 MDS260～300B/BR 52
- 2.8 Electrical Date 53
- Selection 54
- 3.2 Indoor unit selection 56
- 3.4 Design of Air System 60
- 3.5 Refnet joint selection 65
- For MDS-A series 66
- For MDS-B series 66
- Y type 67
- Type: MDS-Y5 67
- Type：MDS-C2、MDS-C3 68
- Type : MDS-C1 68
- Installation 69
- 4.2 Outdoor unit installation 76
- ■ MDS030～060A/AR Units 77
- ■ MDS080～300B/BR 77
- The gas must be Nitrogen 85
- 6.4mm~25.4mm 10mm or more 90
- 28.6mm~38.1mm 15mm or more 90
- （Unit: mm） 91
- 5.1.1 MDS series indoor units 100
- Address settings (SW2.1 101
- Power setting（SW3.1 —— SW3.4） 102
- Reserve 102
- ( Figure 3 ) 104
- 5.2 Trial Run 107
- Servicing and Maintenance 108
- 6.2 Servicing and Maintenance 109
- C H A P T E R 113
- WWW.MCQUAY.COM 120
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