York Floor Ceiling R-410A 50Hz Service Manual download pdf (Page 291)

Controller

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1. Control system

1.1) Brief introduction about controlling system

The control system adopts modular design, that is, all indoor units communicate with

outdoor units, refer to the following figures for the control structure between indoor units and

outdoor units. In the structure, the indoor control board receives the information from users (for

exam. set temp., fan speed etc.) and environment (ex, indoor coil temp., indoor temp. etc.) ,and

organize it to control the action of relevant parts such as EXV, four-way valve etc , then

transmits the signals to outdoor control board through the following communication circuit.

Outdoor main control board can deal with the information from indoor unit and figure out the

best running mode, and then transfer the instruction to the outdoor Slave units and indoor units

to carry out it.

1 2 ... 286 287 288 289 290 291 292 293 294 295 296 ... 384 385

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
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- 150 151
Part 4.4 Medium ESP Duct 152
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Part 5 Installation 240
- 240 241
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- 278 279
- 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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- 295 296
- 298 299
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- 383 384
Form No. 035M00457-000 385
2009 Johnson Controls, Inc 385

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York Floor Ceiling R-410A 50Hz Service Manual Page 291

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