York Floor Ceiling R-410A 50Hz Service Manual download pdf (Page 270)

Installation

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5.2) Drainpipe Trap

5.2.1 If the pressure at the connection of the drainpipe is negative, it needs to design

drainpipe trap.

5.2.2 Every indoor unit needs one drainpipe trap.

5.2.3 A plug should be designed to do cleaning.

Pl u g

5.3) Upward drainage (drain pump)

To ensure the gradient 1/100, the drainpipe can be lifted to 340mm. After upwards, place

downwards, or it will cause malfunction to drain pump.

5.4) Convergent drainage

5.4.1 The number of indoor units should be as small as possible to prevent the traverse main

pipe overlong.

5.4.2 Indoor unit with drain pump and indoor unit without drain pump should be in different

drainage system.

5.4.3 Selection the diameter

Number of connecting indoor units→Calculate drainage volume→Select the diameter

Calculate allowed volume =Total cooling capacity of indoor units (HP) ×2 (l/ hr)

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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
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- 117 118
YDS-45-56EC/HC 119
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Part 4.4 Medium ESP Duct 152
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Part 5 Installation 240
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Gr ounded wi r e 281
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Part 6 Control System 289
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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 270

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