York B3CH 048 and 060 User Manuals

Table of Contents

• General

  1
• Inspection

  1
• Reference

  1
• Normal Maintenance

  14
• Approvals

  1
• Nomenclature

  2
• 1 Unit Application Data

  3
• Limitations

  3
• Air Flow Limitations

  5
• Location

  3
• Physical Data

  7
• Condensate Drainage Precaution

  3
• Supply Air Perferformance — BCH048

  10
• Rigging and Handling

  3
• Supply Air Performance — BCH060

  10
• Clearances

  3
• Ductwork

  3
• Filters

  4
• Static Resistances

  10
• Condensate Drain

  4
• Electrical Data — Basic Unit

  11
• Service Access

  4
• Electrical Data — Heat Pump

  11
• Blower Speed Selection

  4
• Belt-Drive Supply Air Motor Pulley Adj

  13
• Disconnect Switch Bracket For Optional Belt-Drive

  4
• Compressors

  4
• Thermostat

  4
• Power and Control Wiring

  4
• Electric Heaters

  4
• Center of Gravity

  3
• Optional Economizer Rain Hood

  6
• Recommended Drain Piping

  4
• Typical Field Wiring

  5
• Economizer Rain Hood Assembly

  6
• Cooling System

  12
• Adjusting Enthalpy Setpoint

  7
• Preliminary Operation Cooling

  12
• Cooling Sequence of Operation

  12
• Defrost Initiation Times

  12
• Heating Sequence of Operation

  12
• Ambient Modified Time/Temp. Control

  12
• Defrost Sequence of Operation

  12
• Lockout Control

  13
• Belt Adjusment

  13
• Checking Supply Airflow

  13
• Hole Loc. for Press. Drop Readings

  13
• Secure Owner's Approval

  14
• Press. Drop versus Supply Airflow

  13