York Floor Ceiling R-410A 50Hz Service Manual download pdf (Page 54)

Outdoor

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4. Piping Diagrams

4.1) 10kw, 14 kW

Instruction of temperature sensor:

T1: Ambient temperature sensor is used to compare to the setting temperature and judge and

decide the open degree of EXV and decide the output capacity (for indoor units every indoor

unit has a T2 temperature sensor).

T2: Middle temperature sensor of evaporator, is used to modify the open degree of indoor unit

EXV compared to the average temperature of T2 (for indoor units every indoor unit have a T2

temperature sensor) Available in cooling mode

T2B: outlet temperature of evaporator, is used to modify the open degree of indoor unit

EXV compared to the average temperature of T2B (for indoor units every indoor unit have a T2B

temperature sensor) Available in heating mode

T3: outlet temperature of condenser (in cooling mode), is used to judge whether the system

should to operate defrosting program and judge whether should be stop the defrosting program.

T4: Outdoor ambient temperature, it has two functions: a. to adjust the speed of outdoor fan

motor; b. to modify the output of system.

T5: discharge temperature of compressor, is used to protect the compressor avoid damage

because of superheating

Instruction of other important components:

A. Compressor: Adopts the Copeland (In USA) Digital scroll compressor and controls the output

capacity range from 10% to 100% step less capacity modulation.

B. High-pressure accumulator: In the partial load, the excrescent refrigerant will be storage in

this equipment and decrease the load and power input.

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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
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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 54

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