York D2CG300 User Manuals

Table of Contents

• General

  1
• Inspection

  1
• Reference

  1
• Normal Maintenance

  20
• Approvals

  1
• Cleaning Flue Passages and Heating Elements

  20
• Nomenclature

  2
• Troubleshooting

  21
• Replacement Parts

  23
• Limitations

  3
• Location

  3
• Rigging and Handling

  3
• Unit Application Data

  3
• Clearances

  3
• Gas Heat Application Data

  6
• Ductwork

  3
• Pipe Sizing

  6
• Fixed Outdoor Air Intake Damper

  4
• Physical Data

  10
• Condensate Drain

  4
• Electrical Data - Basic Units

  10
• Compressors

  4
• Filters

  4
• Electrical Data - Units With Elec. Heat

  10
• Service Access

  4
• Four and Six Point Loads

  13
• Thermostat

  5
• Supply Air Blower Performance

  13
• Power and Control Wiring

  5
• Static Resistances

  14
• Optional Electric Heaters (DCE Models)

  5
• Power Exhaust Performance

  14
• Combustion Discharge (DCG Models)

  5
• Blower Motor and Drive Data

  14
• Gas Piping (DCG Models)

  6
• Gas Connection (DCG Models)

  6
• Heat Anticipator Setpoint

  16
• L.P. Units, Tanks and Piping (DCG Models)

  6
• Limit Control Setting

  17
• Vent and Combustion Air Hoods (DCG Models)

  7
• Gas Rate - Cubic Feet Per Hour

  19
• Econ. / Mot. Damper Rain Hood Accy. (1EH0401)

  7
• Econ. / Power Rain Hood Accy. (1EH0402)

  9
• Typical Rigging

  3
• Cooling System

  15
• Center of Gravity

  3
• Preliminary Operation Cooling

  15
• Fixed Outdoor Air Damper

  4
• Cooling Sequence of Operation

  15
• Recommended Drain Piping

  4
• Safety Controls (Cooling)

  15
• Electric Heating - Sequence of Operation

  15
• Typical Field Wiring

  5
• Heating Anticipator Setpoints

  16
• External Supply Connection

  6
• Gas Heating - Sequence of Operation

  16
• Bottom Supply Connection

  7
• Safety Controls (Heating)

  16
• Vent and Combustion Air Hoods

  8
• Heat Anticipator Setpoints

  17
• Adjusting Enthalpy Setpoint

  9
• Pre-Start Check List

  17
• Dimensions and Clearances

  11
• Dimensions and Clearances (cont’d)

  12
• Four and Six Point Loads

  13
• Operating Instructions

  17
• Gas Valve Piping

  16
• Post-Start Check List

  17
• Manifold Gas Pressure Adjustment

  17
• Gas Valve and Controls

  17
• Pilot Checkout

  18
• Typical Gas Valve

  17
• Burner Instructions

  18
• Proper Flame Adjustment

  18
• Burner Air Shutter Adjustment

  18
• Typical Flame Appearance

  18
• Checking Supply Air CFM

  18
• Belt Adjustment

  18
• Adjustment of Temperature Rise

  19
• Pressure Drop versus Supply Air CFM

  19
• Checking Gas Input

  19
• Typical Flue Baffle Installation

  20
• Secure Owner’s Approval

  19