McQuay MDS080BR Guide d'installation Page 88
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Design & installation Guide For McQuay MDS Multi System
Pipe size Thickness of the insulation material
6.4mm~25.4mm 10mm or more
28.6mm~38.1mm 15mm or more
In case the environment is hot and damp, increase the recommended thickness (1 inch for the
main pipe, and half inch for the refnet joint) in the table above.
For the cooling only unit, if it is predicted that the system might run in the ambient temperature
of less than 10
degrees Celsius, the liquid pipe should also be insulated.
The thickness of insulation materials depends on the pipe size.
Control
cable
Control
cable
Control cable
Copper pipe
Heat preservation
Metal support
Camber pad
Surface
binding
Surface
binding
Surface binding
Moisture preservation support
Connecting
port is not
heat-insulated
Heat
preservation
Heat
preservation
Heat
preservation
Heat
preservation
Only the gas pip e is heat-
insulated
The gas and liquid pipe are heat-
insulated
Liquid pipe
Liquid pipe
Gas pipe
Liquid
pipe
Gas
pipe
The connecting port should
be heat-insulated completely
4.3.10 Ball Valve Operation
Ball valve operation procedures
Make sure the pipes are connected and the valves are
operated correctly. Please install and operate the valves
as follows:
Gas side ball valve operation
1) Remove the connection pipe with flange: Remove
the connection pipe with flange from the gas side
ball valve and braze it to the outside of the unit.
2) Stick the sealing material: When removing the
connection pipe and flange, remove the sealing
material on the ball valve label and stick it on the
flange of the ball valve to prevent dusts into the ball
valve.
3) Replace the hollow gasket: Before delivery, seal the refrigerant circulation loop with
a round solid sealing plate to avoid gas leakage between flanges. In such status, the
system cannot run. So, please replace with the hollow gasket on the ball valve.
Before installing the hollow gasket, clean the flange surface and the sealing plate.
4) Fix the connection pipe welded with gas pipe, hollow gasket and gas ball valve with screws.
Connection of the liquid side stop valve: Expand the flare fitting of the copper pipe. Then,
connect it with the threaded stop valve.
After pumping vacuum and fill refrigerant, make sure the valve is fully open. If the system
runs when the valve is closed, the unit pressure will be abnormal, damaging the
compressor and four-way valve.
Calculate the refrigerant amount to be added with the formula (refer to Section 9.3), and
fill the amount through the access opening when the pipe connection work is complete.
After the work is finished, firmly fix the access opening and cap to avoid gas leakage.
o
s
- CONTENTS 3
- Overview 4
- MDS080BR MDS100BR MDS120BR 7
- MDS150BR 7
- MDS200BR MDS220BR MDS240BR 8
- MDS180BR 8
- MDS280BR MDS300BR 9
- MDS260BR 9
- 1.3 Main Features 10
- Nominal capacity 11
- 100% operating 11
- 1.4 Nomenclature 12
- 1.5 Products Series 14
- 1.6 Performance Parameter 15
- 1.6.3 Ceiling Cassette 16
- 1.7 Operating Range 19
- 1.8 Refnet 19
- 1.8.2 C Type 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
- Unit Control 27
- Te m perature 28
- 2.3.3 Wire Control Panel 31
- 2.3.4 Outline and Dimension 31
- 2.3.5 Installation Type 31
- concealed installation 31
- 2.5 Network Central Control 34
- 2.6 Wiring Diagram 35
- Model MCK025/030/040/050T 36
- MCM020/030T 36
- Model MCM050T 37
- Model MDB050/060T 37
- Model MDS030A 38
- Model MDS030AR 38
- Model MDS040AR 39
- Model MDS040A 39
- Model MDS050A 40
- Model MDS050AR(220V~/50Hz) 40
- Model MDS060A 41
- Model MDS060AR(220V~/50Hz) 42
- Model MDS080/100/120B 43
- Model MDS080/100/120BR 43
- Model MDS150B 44
- Model MDS150BR 44
- Model MDS180B 45
- Model MDS180BR 45
- Model MDS200/220/240B 46
- Model MDS200/220/240BR 46
- Model MDS260BR(Master Unit) 47
- Connecting the master unit 48
- 2.7 Electric Connection 49
- 2.7.3 MDS080 240B/BR 50
- 2.7.4 MDS260 300B/BR 50
- 2.8 Electric Data 51
- Selection 52
- 3.2 Selection of Indoor Units 54
- Correction factor 57
- 3.4 Design of Air System 58
- 3.5 Slection of Refnet Joint 63
- For MDS-A series 64
- For MDS-B series 64
- Y type 65
- Type: MDS-Y5 65
- 3.6 Selection of E-EXV Box 66
- Installation 67
- Suspension ropes 68
- Protective pads 68
- (2 ropes) 68
- 4.2 Indoor Unit Installation 70
- (machine dimension) 820mm 73
- PULL PULL PULL PULL 76
- Height between indoor 78
- Refnet joint 80
- Outdoor unit 80
- Distributor kit 80
- Controller 81
- Indoor unit 81
- To indoor unit 82
- To outdoor unit 82
- Moisture 83
- Blind plug(copper) 84
- Flare fitting 84
- Avoid wielding too often 85
- Work flow 86
- NO.1 NO.2 87
- 6.4mm~25.4mm 10mm or more 88
- 28.6mm~38.1mm 15mm or more 88
- Unit: mm 89
- Absolute pressure 91
- Surface pressure (kg/cm 91
- Ordinary vacuum drying 92
- Special vacuum drying 93
- 30 or more 96
- Pipe mouth facing downward 96
- Air vent pipe 96
- Air vent device 97
- 5.1.1 MDS Series Indoor Units 98
- Model 1 setting (SW1.1 SW1.6) 98
- Address settings (SW2.1 99
- Model 2 setting 100
- SW3.5 SW3.8 100
- Power setting SW3.1 SW3.4 100
- Reserve 100
- Digital control 102
- 5.2 Trial Run 105
- Servicing and Maintenance 106
- 6.2 Servicing and Maintenance 107
- For example: 112
- WWW.MCQUAY.COM 116
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