Manuali utente per York D2EG 048

Sommario

• General

  1
• Inspection

  1
• Reference

  1
• Normal Maintenance

  17
• Approvals

  1
• Cleaning Flue Passages and Heating Elements

  17
• Nomenclature

  2
• Limitations

  3
• Location

  3
• Unit Application Data

  3
• Rigging and Handling

  3
• Gas Heat Application Data

  4
• Clearances

  3
• Pipe Sizing

  5
• Ductwork

  3
• Filters

  4
• Physical Data

  8
• Condensate Drain

  4
• Supply Air Perf. Direct-Drive Units

  8
• Service Access

  4
• Thermostat

  4
• Supply Air Perf.5 Ton Belt-Drive Units

  10
• Power and Control Wiring

  4
• Blower Speed Selection

  4
• Static Resistances

  11
• Compressors

  4
• Motor & Drive Data

  11
• Combustion Discharge

  4
• Electrical Data (Direct-Drive Units)

  11
• Disconnect Switch Bracket For Optional Belt-Drive

  5
• Electrical Data (Belt-Drive Units)

  11
• Gas Piping

  5
• Limit Control Setting

  14
• Gas Connection

  6
• L.P. Units, Tanks and Piping

  6
• Belt-Drive Supply Air Motor Pulley Adj

  15
• Low NOx Application

  6
• Gas Rate - Cubic Feet Per Hour

  16
• Vent and Combustion Air Hoods

  7
• Optional Economizer Rain Hood

  7
• Cooling System

  13
• Center of Gravity

  3
• Preliminary Operation Cooling

  13
• Recommended Drain Piping

  4
• Cooling Sequence of Operation

  13
• Typical Field Wiring

  5
• Safety Controls (Cooling)

  13
• External Supply Connection

  6
• Heating Sequence of Operation

  13
• Bottom Supply Connection

  6
• Safety Controls (Heating)

  14
• Heat Anticipator Setpoints

  14
• Vent and Combustion Air Hoods

  7
• Pre-Start Check List

  14
• Economizer Rain Hood Assembly

  7
• Enthalpy Setpoint Adjustment

  8
• Dimensions and Clearances

  12
• Operating Instructions

  14
• Gas Valve Piping

  13
• Post-Start Check List (Gas)

  14
• Typical Gas Valve

  14
• Manifold Gas Pressure Adjustment

  14
• Pilot Checkout

  15
• Proper Flame Adjustment

  15
• Burner Instructions

  15
• Typical Flame Appearance

  15
• Burner Air Shutter Adjustment

  15
• Belt Adjustment

  15
• Supply Air Blower and Temperature Rise Adj

  15
• Press. Drop versus Supply Air CFM

  16
• Checking Gas Input

  16
• Secure Owner's Approval

  16