York Floor Ceiling R-410A 50Hz Service Manual download pdf (Page 256)

Installation

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4.5.5 Refrigerant fastness, the Refrigerant fastness, the distance between the supports of

the cross direction tube (copper tube):

Nominal diameter Below 16 16—25 Above 32

Max. Distance (m) 1.0 1.5 2.0

4.5.6 Calculation of the pipe length

(1) Available length of pipe =pipe length + the amounts of branch × branch equivalent length

+the amounts of elbow × elbow equivalent length.

(2) Conversion of the branch equivalent length: Convert into the direct pipe length according to

branch part 0.5m/l

(3) Conversion of elbow equivalent length.

Liquid pipe

dimension

Φ6.35 Φ9.5 Φ12.7 Φ15.9 Φ19.0 Φ22.0 Φ25.0 Φ28.6 Φ38.0 Φ45.0 Φ54.0 Φ67

Junction(90°elbow) 0.1 0.15 0.2 0.25 0.3 0.4 0.45 0.5 0.55 0.6 0.65 0.7

4.6) Installation work of Refrigerant pipe

4.6.1 Protection of Refrigerant pipe material

1) Transportation and storing of refrigerant pipe

When transporting the pipes, please protect the pipes from wending and distortion. Please

place a cap at the open end of the pipe in order to prevent water and mud entering, and store in

the appointed site.

3) All the open tips of the pipes need to be protected. The best feasible means is Enveloping

End, and you can select the easy means of Wrapping. Refer to the following table to select

the means used in different sites.

Site Period Maintenance Means

Above three months Envelop End

Outdoor

Below three months Envelop End or Wrapping

Indoor No limit Envelop End or Wrapping

1 2 ... 251 252 253 254 255 256 257 258 259 260 261 ... 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
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- 107 108
3. Capacity table 109
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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 256

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