140
Wall thickness and size: select proper sizes according to Selection of piping dimensions
• For the permissible maximum length, permissible elevation difference and permissible length after branching,
please refer to the installation instructions or technical data attached to the outdoor unit.
• The branching pipe for the pipe must have refrigerant branching suite. For selection of refrigerant branching suite,
please refer to the installation instructions or technical data attached to the outdoor unit.
Piping maintenance
During installation, provide maintenance as specified in the table in order to prevent water,
foreign matter and dust from entering the pipes.
Location
Work period
Maintenance method
Outdoors
More than 1 month
Screw
Less than 1 month
Screw or strap
Indoors
——
Note
Particularly when a pipe is to penetrate through a wall or extend to outdoors, make sure foreign matter and dust
etc cannot enter the pipe.
Attention item for piping connection
• To connect a pipe to or remove it from the valve box, do use pliers for screws and torque spanner;
• When installing the valve box, please fix the box and connecting pipes in an efficient way to avoid shaking when
changing valve box.
• For the sizes of the flares, please refer to <Table-1>.
<Note>
• For connection at a flare, apply ester or ether oil to the flare (both inner surface and outer surface). Apply such oil
for 3 to 4 times and insert the screw in the first use
• The tightening torque for the flare is given in <Table-1>.
If no torque wrench is available, act as the follows.
Use a spanner to tighten the nut of the flare to a position where the tightening torque sharply increases.
The tightening angle for the position where the tightening torque sharply increases <Table -2>.
After the work, make sure there is no air leakage.
Tube size
Tightening torque (N.m)
Machined flare size A (mm)
Flare shape
Ø6.35
14.2~17.2
8.7~9.1
R0.4
A
90°
Ø9.52
32.7~39.9
12.8~13.2
Ø12.7
49.5~60.3
16.2~16.6
Ø15.88
61.8~75.4
19.3~19.7
Ø19.05
97.2~118.8
23.7—23.9
Ø22.22
117.2~138.8
28.2-28.5
<Table-1>
Содержание MRV 5-RC AB052MAERA
Страница 1: ...MRV 5 RC Service Manual SYJS 03 2019REV A Edition 2019 03 ...
Страница 3: ......
Страница 55: ...52 AV08 10 12 14IMVURA 4 Center of gravity x X 347 9587 y 471 5454 z 725 6683 y z ...
Страница 56: ...53 AV16 18 20 22IMVURA x X 650 5962 y 380 7255 z 706 5342 y z ...
Страница 106: ...103 2 Dimension 4 19 200 60 25 25 25 249 108 232 84 69 388 73 82 65 103 177 4 44 4 35 277 ...
Страница 116: ...113 2 Preparation before installation ...
Страница 130: ...127 2 Dimension 290 67 410 220 567 137 160 189 57 144 109 159 159 212 393 4 22 65 65 65 65 65 44 65 76 4 52 67 156 830 ...
Страница 162: ...159 One by one valve box PCB code 0151800186A 2 Valve box PCB photo and dip switch setting ...
Страница 165: ...162 One by four valve box PCB code 0151800466 ...