McQuay MDS300B Guida di Installazione Scaricare il pdf (Pagina 85)

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Design & installation Guide For McQuay MDS Multi System

4.3.３ exchange way of Nitrogen gas (when welding copper tube)

Suppose no nitrogen gas is injected into refrigerant pipe when welding, the oxide air bubble will

come into being in the internal surface of tube. This will result in some damage to the system. In

order to avoid these, nitrogen gas should be injected into refrigerant pipe when welding, this

process is called nitrogen gas exchange method. This is the standard operation process of

welding.

Note:

The gas must be Nitrogen.

Pressure adjustor must be used.

1 2 ... 80 81 82 83 84 85 86 87 88 89 90 ... 119 120

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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McQuay MDS300B Guida di Installazione Pagina 85

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