York Floor Ceiling R-410A 50Hz Service Manual download pdf (Page 260)

Installation

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Main pipe of the branch part is vertical to the horizontal plane, which can avoid bad

effect due to uneven distribution of gas and liquid.

2) Protection of outdoors refrigerant pipes

Sudden dandification also should be considered except heat-insulated layer. If the length

of bare part is over 1m, a buckle-board must be added to the bare part.

3) Laying principle of YDS refrigerant pipes

♦ Centralized laying, lying along the wall, and trying to make full of use of corridor.

♦ After finishing lying, binding up the refrigerant pipes with white binding-strap. After

finishing winding-up every pipe separately, please try to binding up all pipes

together according to the diameters and the degree of tightness should be based on

no feeling of flexible.

♦ When installing the connection pipes and electric wires (power wire, control wire),

they should be laid along the wall, turn the corner logically, flat and straight, parallel

with each other and packed together. And try to avoid striding over and blocking

the traffic.

♦ The connection pipes and electric wires should be as short as possible.

♦ Try to bind up all pipes and no bareness is allowed at the connecting part.

4) Precautions about laying refrigerant pipes

♦ Pulling pipe: mark the system No. in the pipes to prevent wrong connection.

♦ Make sure the support of the pipes is firm enough.

4.6.5 Refrigerant pipe flushing

Refrigerant pipe flushing is a method to eliminate filter. It has three main functions:

 When nitrogen is insufficient, flushing can eliminate oxide air bubble.

 When the end of the pipe can’t seal well, flushing can eliminate filter and humidity.

 Flushing can check the indoor/outdoor pipe connection.

Main procedure is as the following:

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TECHNICAL SERVICE MANUAL 1
Part I General Information 5
Contents 18
Part 3 Outdoor 27
YDS-100WC15/35 50
YDS-140WC15/35 50
A 624 1030 52
B 55 52
C 1030 52
Part 4.1 Four-way cassette 72
Piping: 8m (horizontal) 79
Notes: 80
YDS-28-80KC 230 170 89
YDS-90-140KC 300 190 89
Indoor unit H(mm) 90
YDS-28-80KC ≥260 90
YDS-90-140KC ≥300 90
YDS-22-56GC ≥280 90
- 100 101
- 101 102
Part 4.2 Wall Mounted 103
- 103 104
- 104 105
- 105 106
- 106 107
- 107 108
3. Capacity table 109
- 109 110
- 110 111
- 111 112
- 112 113
- 114 115
- 115 116
- 116 117
- 117 118
YDS-45-56EC/HC 119
- 119 120
- 120 121
- 121 122
- 122 123
- 123 124
- 124 125
- 125 126
- 126 127
- 127 128
- 128 129
- 129 130
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- 149 150
- 150 151
Part 4.4 Medium ESP Duct 152
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Part 5 Installation 240
- 240 241
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- 279 280
Gr ounded wi r e 281
- 281 282
- 282 283
- 283 284
- 284 285
- 285 286
- 286 287
- 287 288
Part 6 Control System 289
- 289 290
- 290 291
- 292 293
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- 298 299
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Form No. 035M00457-000 385
2009 Johnson Controls, Inc 385

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York Floor Ceiling R-410A 50Hz Service Manual Page 260

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