User Manuals: Daikin DCH120 Series Rooftop Heat Pump

Manuals and User Guides for Daikin DCH120 Series Rooftop Heat Pump. We have 1 Daikin DCH120 Series Rooftop Heat Pump manual available for free PDF download: Service Instructions Manual

Daikin DCH120 Series Service Instructions Manual (139 pages)

Cooling/Heat Pumps Commercial Package Units with R-410A Refrigerant 4 - 25 Tons & Accessories

Brand: Daikin | Category: Heat Pump | Size: 3 MB

Table of Contents

2
- Important Information
  3
- Product Design
  7
- System Operation
  11
  - System Operation
    16
- Scheduled Maintenance
  17
Servicing

19
- Servicing
  20
  - Checking Voltage
    20
  - Checking Wiring
    21
  - Checking Thermostat, Wiring & Anticipator
    21
  - S-3A Thermostat & Wiring
    21
  - S-3B Cooling Anticipator
    21
  - Checking Transformer & Control Circuit
    21
  - Checking Contactor And/Or Relays
    22
  - Checking Contactor Contacts
    22
  - Checking Fan Relay Contact
    23
  - Checking Loss of Charge Protection
    24
  - Checking High Pressure Control
    24
  - Checking Low Pressure Control
    25
  - Checking Capacitor
    25
  - S-15A Resistance Check
    25
  - S-15B Capacitance Check
    26
  - Checking Motors
    26
  - S-16A Checking Fan & Blower Motor
    26
  - Windings (PSC Motors)
    26
  - S-16D Checking EEM Motors
    26
  - Checking Compressor Windings
    27
  - S-17A Resistance Test
    27
  - S-17B Ground Test
    27
  - S-17D Operation Test
    28
  - Testing Crankcase Heater (Optional Item)
    28
  - S-18A Crankcase Heater Thermostat
    29
  - Checking Reversing Valve & Solenoid
    29
  - Testing Defrost Control
    29
  - Testing Defrost Thermostat
    29
  - Checking Heater Limit Control(S)
    30
  - Refrigeration Repair Practice
    30
  - Leak Testing
    30
  - Evacuation
    31
  - Charging
    32
  - Overfeeding
    33
  - Checking Superheat
    33
  - S-104 Checking Compressor Efficiency
    33
  - Fixed Orifice Restriction Devices
    36
  - Checking Restricted Liquid Line
    36
  - Non-Condensables
    36
  - Compressor Burnout
    36
  - Checking External Static Pressure
    37
  - Checking Temperature Rise
    38
  - Checking Belt Tension
    38
  - Indoor Fan Rotation Check
    39
  - Motor Sheave Adjustment
    39
  - Servicing
    39
- Unit Wiring Diagrams
  40
Section 3

65
- Checking Voltage
  66
- Checking Wiring
  67
- S-3B Cooling Anticipator
  67
- Checking Contactor And/Or Relays
  68
- Checking Contactor Contacts
  68
- Checking Capacitor
  70
- Checking High Pressure Control
  70
- Checking Low Pressure Control
  70
- S-15A Resistance Check
  71
- S-15B Capacitance Check
  71
- Checking Compressor Windings
  72
- Checking Motors
  72
- S-16A Checking Fan & Blower Motor
  72
- S-17A Resistance Test
  72
- Windings (PSC Motors)
  72
- S-17B Ground Test
  73
- S-17D Operation Test
  73
- Testing Crankcase Heater (Optional Item)
  73
- Testing Defrost Control
  74
- Testing Defrost Thermostat
  74
- Checking Heater Elements
  75
- Checking Heater Limit Control(S)
  75
- Evacuation
  76
- Leak Testing
  76
- Refrigeration Repair Practice
  76
- Charging
  77
- Checking Compressor Efficiency
  77
- Checking Superheat
  78
- Fixed Orifice Restriction Devices
  78
- Overfeeding
  78
- Checking Restricted Liquid Line
  81
- Compressor Burnout
  81
- Non-Condensables
  81
- Checking Temperature Rise
  82
- Checking Belt Tension
  83
- Indoor Fan Rotation Check
  84
Section 4

111
- Checking Voltage
  112
- Checking Wiring
  113
- S-3B Cooling Anticipator
  113
- Checking Contactor And/Or Relays
  114
- Checking Contactor Contacts
  114
- Checking Fan Relay Contact
  114
- Checking Capacitor
  116
- Checking High Pressure Control
  116
- Checking Low Pressure Control
  116
- S-15A Resistance Check
  117
- S-15B Capacitance Check
  117
- (PSC Motors)
  118
- Checking Compressor Windings
  118
- Checking Motors
  118
- S-16A Checking Fan Motor Windings
  118
- S-17A Resistance Test
  118
- S-17B Ground Test
  119
- S-17D Operation Test
  119
- Testing Crankcase Heater (Optional Item)
  119
- Checking Heater Limit Control(S)
  120
- Leak Testing
  120
- Refrigeration Repair Practice
  120
- Charging
  121
- Evacuation
  121
- Checking Compressor Efficiency
  122
- Overfeeding
  122
- Checking Expansion Valve
  123
- Checking Restricted Liquid Line
  123
- Checking Subcooling
  123
- Non-Condensables
  123
- Checking Belt Tension
  126
- Checking External Static Pressure
  126
- Compressor Burnout
  126
- Indoor Fan Rotation Check
  127
- Motor Sheave Adjustment
  127

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User Manuals: Daikin DCH120 Series Rooftop Heat Pump

Daikin DCH120 Series Service Instructions Manual (139 pages)

Table of Contents

Table of Contents

Servicing

Section 3

Section 4

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