McQuay MDS080BR Installation Guide Page 89
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Design & installation Guide For McQuay MDS Multi System
Outer diameter size
Unit: mm
Outer diameter size
Outer diameter
Outer diameter
Metric system British measurement
6.35 1/4 9.0
9.52 3/8 13.0
12.7 1/2 16.2
15.88 5/8 19.4
19.05 3/4 23.3
The following table shows the dimension of the nut of the flare fitting nut. Unit: mm
When connecting the liquid pipe and liquid stop valve, align the center of the flare fitting of the liquid pipe to
that of the stop valve, and then tighten with a moment wrench. Whether tightened with the wrench depends
on the setting of the wrench range and the tightening angle. The following table shows the external pipe
diameter, the corresponding tightening moment and the tightening angle.
Outer diameter (mm) Tightening moment (N
.
m) Tightening angle(
o
)
6.35 14 18 60 90
9.52 35 42 60 90
12.7 50 57.5 30 60
15.88 75 80 30 60
19.05 100 140 20 35
The following table shows the dimension of the copper flare fitting.
A
o
so
s
B
C
D
M
K
L
F
G
EE
H
Ball valve (liquid side)
Ball valve (gas side)
A Valve handle
(Before pipe connection, vacuum pumping and additional refriger-
ant filling for delivery, make sure this valve is closed completely.
After the above operations, please fully open it.)
B Stop pin (prevent the valve handle from turning over 90 degrees)
C Sealing plate (annex)
D Connection pipe (annex)
Install the pipe firmly to the valve flange with the sealing plate to
avoid gas leakage.
E Open (slow operation)
F Cap and copper spacer
Remove the cap and operate the handle. After the operation,
reinstall the cap. The moment to tighten the valve handle cap is 23
Nm to 72 Nm.
G Access opening
Pump vacuum for the refrigerant pipe through this access opening,
and fill additional refrigerant on the site. Open and close the access
opening with a double-end wrench. After the operation, reinstall the
cap. The moment to tighten the access opening cap is 12 N m to 15 N m.
H Flare fitting
For the tightening moment, refer to the figure in next page. Loosen and screw up the screw with a double-end
wrench. Coat refrigerant oil on the contact surface of the flare fitting (Type R22 mineral oil is applicable).
K Field connection pipe
Braze to the connection pipe. (Please use non-oxidative brazing materials)
Outer diameter
Outer diameter
Metric system British measurement
6.35 1/4 17.0
9.52 3/8 22.0
12.7 1/2 24.0
15.88 5/8 27.0
19.05 3/4 36.0
- 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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