York 120 User Manuals

Table of Contents

• GENERAL

  5
• SAFETY CONSIDERATIONS

  5
• INSPECTION

  5
• REFERENCE

  5
• APPROVALS

  5
• NOMENCLATURE

  6
• INSTALLATION

  10
  • ELECTRIC HEAT ACCESSORIES

    21
  • ELECTRIC HEAT OPTION

    21
  • motorized outdoor damper

    21
  • economizer

    22
  • power exhaust

    22
  • rain hood

    22
  • minimum position adjustment

    22
  • ENTHALPY SET POINT ADJUSTMENT

    22
  • POWER EXHAUST DAMPER SET POINT (WITH OR WITHOUT POWER EXHAUST)

    22
  • INDOOR AIR QUALITY AQ

    22
  • method one

    31
  • method two

    31
• OPERATION

  33
  • CONTINUOUS BLOWER

    34
  • INTERMITTENT BLOWER

    34
  • NO OUTDOOR AIR OPTIONS

    34
  • ECONOMIZER WITH SINGLE ENTHALPY SENSOR -

    34
  • ECONOMIZER WITH DUAL ENTHALPY SENSORS -

    34
  • ECONOMIZER WITH POWER EXHAUST -

    34
  • MOTORIZED OUTDOOR AIR DAMPERS -

    34
  • COOLING OPERATION ERRORS

    35
  • HIGH-PRESSURE LIMIT SWITCH

    35
  • LOW-PRESSURE LIMIT SWITCH

    35
  • FREEZESTAT

    35
  • LOW AMBIENT COOLING

    35
  • FLASH CODES

    36
  • RESET

    36
  • TEMPERATURE LIMIT

    36
  • SAFETY CONTROLS

    36
  • LIMIT SWITCH (LS)

    36
  • FLASH CODES

    36
  • RESET

    36
• START-UP (COOLING)

  37
• charging the unit

  37
• NORMAL MAINTENANCE

  39
  • FILTERS

    39
  • MOTORS

    39
  • OUTDOOR COIL

    39
• TROUBLESHOOTING

  39