Name: York ECO2 YPAL 050
Brand: York
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JOHNSON CONTROLS

FORM 100.50-NOM6 (1207)

FIG. 2-12 – ATMOSPHERIC SENSOR PROBE

LD13127

Economizer

Compartment

Economizer

Compartment

Filter

Compartment

Filter

Compartment

The atmospheric probe should be mounted on the support post on the control side

of the unit between the Economizer and the Filter compartment.

Safety Symbols2
Base Model Number3
Changeability of this Document3
Nomenclature3
Table of Contents4
List of Tables11
List of Figures12
Fig. 1-1 - Packaged Rooftop Air Conditioning Unit13
- Heating Section14
- Air Management15
- Controls15
- Indoor Air Quality15
- Electrical16
- Service and Installation16
Section 1 - Introduction13
- Ecological and Economical Design13
  - Condensing Section13
Section 2 - Installation17
- Approvals17
- Limitations17
- Unit Inspection17
- Locations and Clearances17
- Table 2-1 - Voltage Limitations17
Fig. 2-1 - Unit Clearances18
- Rigging and Handling19
Fig. 2-2 - Lifting Lug Locations19
Fig. 2-3 - Unit Rigging19
- Unit Weights20
- Physical Data23
- Table 2-5 - Physical Data - 050-061 Models23
- Table 2-6 - Physical Data - Compressors24
- General Arrangement Drawing - 050-061 Models25
  - Bottom Supply / Bottom Return25
Fig. 2-4 - General Arrangement Drawing25
- Bottom Supply / Side Return26
- Bottom Supply / Rear Return27
- Curb Layout Drawing / 050-061 Models28
Fig. 2-5 - General Arrangement Drawing28
- Electrical Data29
- Filters32
- Condensate Drain32
  - Condensate Drain Piping32
  - Condensate Drain Trap32
Fig. 2-6 Drain Trap Showing Water Location During Draw through Operation Stages32
Fig. 2-7 - Trap Detail for Draw through Application32
- Air Hoods for Economizer33
- Air Hoods for Fixed Outside Air (Units Without Economizer)33
- Air Hoods for Exhaust Air33
- Field Wiring33
- Communication35
- Dirty Filter Switch35
- Field Control Wiring Connections36
Fig. 2-8 - Field Control Wiring Connections36
- Power Wiring37
- Electrical Service Sizing37
- Single-Point Power Supply Wiring38
Fig. 2-9 - Single-Point Power Supply Wiring38
- Single-Point Power Supply Wiring with Non-Fused Disconnect Switch39
Fig. 2-10 - Single-Point Power Supply Wiring with Non-Fused Disconnect39
- Dual-Point Power Supply Wiring40
Fig. 2-11 - Dual-Point Power Supply Wiring40
- Controls41
- Table 2-16 - Three Phase Power Supply Conductor Size Range41
- Transducer Pneumatic Tubing42
Fig. 2-12 - Atmospheric Sensor Probe43
- Duct System44
  - Duct Connection Guidelines44
- Sound and Vibration Transmission44
- Table 2-17 - Supply Air Duct Connection Configurations44
- Table 2-18 - Return Air Duct Connection Configurations44
- Gas Heating45
- Gas Piping45
- Gas Connection45
  - Gas Piping Recommendations45
  - Table 2-19 - Pipe Sizes45
Fig. 2-13 - Typical Gas Piping Connection45
- Combustion Vent46
Fig. 2-14 - Combustion Vent46
Section 3 - Start-Up47
- Crankcase Heaters47
- Checking the System Prior to Initial Start (no Power)47
  - Unit Checks47
Fig. 3-1 - Fan Hold down Brackets48
- Unit Checks - Power Applied49
  - Verifying Compressor Rotation49
  - Compressor Oil Level Check49
- Initial Start-Up50
- Gas Heat Models53
Fig. 3-2 - Manifold Gas Pressure Adjustment54
Section 4 - Maintenance55
- General55
- Periodic Maintenance - Monthly55
- Periodic Maintenance - Three to Six Months56
  - Motor Bearing Lubrication56
  - Belt Tension56
- Periodic Maintenance - Yearly56
Fig. 4-1 - Sheave Alignment56
- Belt Replacement57
- Belt Tensioning57
Fig. 4-2 - Fan Data Plate - Belt Tension57
Fig. 4-3 - Belt Tensioning Gauge57
- Filter Drier Replacement58
- Forward Curved Fans58
Fig. 4-4 - Example of Fc Fan Shaft/Wheel Marking58
- Fan Motor59
- Fan Shaft Bearings59
- Bearing Lock Devices60
- Eccentric Type60
Fig. 4-5 - Bearing with Setscrew Type Locking Device60
Fig. 4-6 - Bearing with Eccentric Cam60
- Torquing of Set-Screws61
- Table 4-2 - Set Screw Torque61
Fig. 4-7 - Eccentric Cam Locking Collar Bearing Installation61
Fig. 4-8 - Split Bearing61
Section 5 - Sequence of Operation63
- Unit Type63
- Occupied / Unoccupied Mode63
- Constant Volume Mode (CV)63
  - Thermostat Input64
- Space Sensor - Hard Wired or Communicated65
  - Cooling Operation - Occupied or Unoccupied65
  - Heating Operation - Occupied or Unoccupied66
- Stand Alone66
  - Cooling Operation - Occupied or Unoccupied67
  - Heating Operation - Occupied or Unoccupied67
Variable Air Volume (Vav)68
- Cooling - Occupied with Thermostat68
- Cooling - Unoccupied with Thermostat69
- Occupied or Unoccupied Heating with a Thermostat69
- Occupied Cooling with Hard Wired or Communicated Space Sensor69
- Cooling - Unoccupied with a Hard Wired or Communicated Space Sensor70
- Heating - Occupied with a Hard Wired or Communicated Space Sensor70
- Heating - Unoccupied with a Hard Wired or Communicated Space Sensor70
- Occupied Cooling - Stand Alone71
- Cooling - Unoccupied Stand Alone72
- Heating - Occupied Stand Alone72
- Heating - Unoccupied Stand Alone72
Condenser Fan Operation72
Cooling Compressor Lockout72
- Sequence of Operation72
Fig. 5-1 - Condenser Fan Vfd Potentiometer Settings73
Low Ambient Operation73
- Operation and Pressure Control Range73
- Conﬁ Guration (Jumpers and Potentiometers)73
- Table 5-1 - Binary Outputs73
- Table 5-2 - Vfd Jumpers73
- Table 5-3 - Potentiometer Settings73
Supply Fan Operation74
- Constant Volume (CV)74
- Variable Air Volume (VAV)75
- VAV Supply Fan Speed Control76
Economizer76
- Dry Bulb76
- Single Enthalpy77
- Dual Enthalpy77
Bas Economizer Operation77
- Sequence of Operation78
- Constant Volume Economizer Set Point78
- Variable Air Volume Economizer Set Point78
- Economizer / Compressor Operation79
- Economizer PI Loop (Proportional and Integral)79
Economizer Loading79
- Constant Volume80
- Variable Air Volume80
- Comfort Ventilation81
  - Table 5-4 Operation During off Cycle81
  - Table 5-5 Compressor on When Space Input Satisfied81
  - Conditions of Operation82
  - Sequence of Operation82
- Excessive Sat (Supply Air Temperature) Control82
  - Cooling82
  - Table 5-6 Heat Stage on When Space Input Satisfied82
  - Heating83
- Space Sensor with Set Point Adjustment84
  - Sequence of Operation84
- Space Sensor Fault Override Enable85
  - Sequence of Operation85
- Remote Control85
- Redline85
- Loadshed86
  - Sequence of Operation86
- Dirty Filter86
- Metric Operation86
- Intelli-Start86
  - Sequence of Operation87
  - Subsequent Operation87
- Morning Warm-Up88
  - Sequence of Operation88
- Hydronic Heat89
  - Sequence of Operation89
- Hydronic Heat Freeze Stat89
- Ventilation89
  - Manual90
  - Fixed Minimum90
  - Sequence of Operation90
  - Demand Ventilation90
    - Deﬁ Nitions91
    - Sequence of Operation91
- Ventilation Low Ambient Minimum Position Reset91
- Exhaust Fan Operation92
  - On/Off Control Based on Outdoor Damper Position92
    - Sequence of Operation92
  - On/Off Control Based on Building Pressure92
    - Sequence of Operation93
  - Modulating Damper with Fixed Speed Exhaust93
  - Modulating Exhaust with a VFD93
    - Sequence of Operation94
- Pre-Occupancy Purge94
  - Criteria for Operation94
- Energy Recovery Ventilator95
  - Sequence of Operation95
- Low Voltage Protection95
- Outdoor Air Heating Lockout95
- Hot Gas Bypass95
- Space Temperature Alarm95
  - Sequence of Operation96
- Sat Alarm for Heating96
- Supply Air Temp Alarm Setpoint for Heating" Alarm96
- Economizer Minimum Position" Alarm97
- Sat Alarm for Cooling97
  - Sequence of Operation97
  - Supply Air Temp Alarm Setpoint for Cooling" Alarm97
  - Economizer Minimum Position" Alarm98
- Alarm History98
Fig. 6-1 - Unit Controller Interface99
- Test/Up Button100
- Address/Down Button100
- Alarm/Change100
- Character Display Addresses & Codes100
- Table 6-1 - Parameter Points List101
- Communication Using Simplicity Pc104
Section 6 - User Interface99
- Unit Controller Interface99
- Program Button99
Section 7 - Parameter Descriptions and Options141
Table 7-1 - Definitions141
Section 8 - Service153
- Analog Input Operation153
Fig. 8-1 - Connector Locations157
- Faults and Lockouts160

York ECO2 YPAL 050 User Manual

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York ECO2 YPAL 050 Specifications

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Brand	York
Model	ECO2 YPAL 050
Category	Air Conditioner
Language	English