York D2CG300 Bottom Supply Connection, External Shut-Off, L.P. UNITS, TANKS AND PIPING DCG Models

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FIG. 7 - BOTTOM SUPPLY CONNECTION

FIG. 7 - BOTTOM SUPPLY CONNECTION

EXTERNAL SHUT-OFF

WARNING: Natural gas may contain some propane. Propane,

being an excellent solvent, will quickly dissolve white lead or most standard commercial compounds. Therefore, a special pipe compound must be applied when wrought iron or steel pipe is used. Shellac base compounds such as Gaskolac or Stalastic, and compounds such as Rectorseal #5, Cyde’s or John Crane may be used.

4.All piping should be cleaned of dirt and scale by hammering on the outside of the pipe and blowing out the loose dirt and scale. Before initial start-up, be sure that all of the gas lines external to the unit have been purged of air.

5.The gas supply should be a separate line and installed in accordance with all safety codes as prescribed under “Limitations”. After the gas connections have been completed, open the main shut-off valve admitting normal gas pressure to the mains. Check all joints for leaks with soap solution or other material suitable for the purpose.

NEVER USE A FLAME.

6.The furnace and its individual manual shut-off valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1/2 psig (3.48kPa).

The furnace must be isolated from the gas supply piping system by closing its individual manual shut-off valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 psig (3.48kPa).

7.A 1/8 inch NPT plugged tapping, accessible for test gage connection, must be installed immediately upstream of the gas supply connection to the furnace.

530.18-N11Y

L.P. UNITS, TANKS AND PIPING (DCG Models)

All gas heat units are shipped from the factory equipped for natural gas use only. The unit may be converted in the field for use with L.P./propane gas with accessory kit model number 1NP0418.

All L.P./propane gas equipment must conform to the safety standards of the National Fire Protection Association.

For satisfactory operation, L.P./propane gas pressure must be

8.8inch W.C at the unit under full load. Maintaining proper gas pressure depends on three main factors:

1.The vaporization rate which depends on (a) the tempera- ture of the liquid and (b) the “wetted surface” area of the container or containers.

2.The proper pressure regulation. (Two-stage regulation is recommended from the standpoint of both cost and effi- ciency.)

3.The pressure drop in the lines between regulators and between the second stage regulator and the appliance. Pipe size required will depend on the length of the pipe run and the total load of all appliances.

Complete information regarding tank sizing for vaporization, recommended regulator settings, and pipe sizing is available from most regulator manufacturers and L.P./propane gas suppliers.

L.P./propane gas is an excellent solvent and special pipe compound must be used when assembling piping for this gas as it will quickly dissolve white lead or most standard commercial compounds. Shellac base compounds such as Rectorseal #5 are satisfactory for this type of gas.

Check all connections for leaks when piping is completed, using a soap solution. NEVER USE A FLAME.

Unitary Products Group

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Contents FOR YOUR SAFETY INSTALLATION INSTRUCTIONSAFETY CONSIDERATIONS FOR YOUR SAFETY If you smell gas 1.Open windowsOPERATION TABLE OF CONTENTSINSTALLATION MAINTENANCE & TROUBLESHOOTINGLOCATION INSTALLATIONLIMITATIONS TABLE 1 - UNIT APPLICATION DATAFIG. 3 - FIXED OUTDOOR AIR DAMPER SERVICE ACCESSDUCTWORK FIXED OUTDOOR AIR INTAKE DAMPERFIG. 5 - TYPICAL FIELD WIRING CONTROL WIRE SIZESTABLE 2 - GAS HEAT APPLICATION DATA POWER AND CONTROL WIRINGTHERMOSTAT OPTIONAL ELECTRIC HEATERS DCE ModelsEXTERNAL SHUT-OFF FIG. 7 - BOTTOM SUPPLY CONNECTIONL.P. UNITS, TANKS AND PIPING DCG Models FIG. 8 - VENT AND COMBUSTION AIR HOODS VENT AND COMBUSTION AIR HOODS DCG ModelsOPTIONAL ECONOMIZER/MOTORIZED DAMPER RAIN HOOD 530.18-N11Y FIG. 9 - ENTHALPY SETPOINT ADJUSTMENTUnitary Products Group TABLE 5 - ELECTRICAL DATA - BASIC UNITS TABLE 4 - PHYSICAL DATATABLE 6 - ELECTRICAL DATA - UNITS w/ELECTRIC HEAT UTILITIES ENTRY DATA FIG. 10 - DIMENSIONS & CLEARANCES - DCE & DCGCont’d DETAIL “Y” UNIT WITH RAIN HOODS ACCESSORY SIDE SUPPLY AND RETURN AIR OPENINGSREAR VIEW DETAIL “X”TABLE 7 - FOUR AND SIX POINT LOADS 4 POINT LOADS6 POINT LOADS FIG. 11- FOUR AND SIX POINT LOADSTABLE 10 - STATIC RESISTANCES TABLE 11 - POWER EXHAUST PERFORMANCETABLE 12 - BLOWER MOTOR AND DRIVE DATA PRELIMINARY OPERATION COOLING SAFETY CONTROLSOPERATION COOLING SYSTEMFIG. 12 - GAS VALVE PIPING TABLE 9 - HEAT ANTICIPATOR SETTINGHEAT ANTICIPATOR SETPOINTS GAS HEATING SEQUENCE OF OPERATIONPRE-STARTCHECK LIST TABLE 10 - LIMIT CONTROL SETTINGMANIFOLD GAS PRESSURE ADJUSTMENT START-UPPILOT CHECKOUT FIG. 15 - PROPER FLAME ADJUSTMENTBURNER AIR SHUTTER ADJUSTMENT FIG.17 - BELT ADJUSTMENTCHECKING GAS INPUT ADJUSTMENT OF TEMPERATURE RISETABLE 11 - GAS RATE - CUBIC FEET PER HOUR NORMAL MAINTENANCE MAINTENANCEFIG. 19 - TYPICAL FLUE BAFFLE INSTALLATION TROUBLESHOOTING TROUBLESHOOTING - Cont’d REPLACEMENT PARTS Code SBY Unitary Products Group530.18-N11Y
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D2CG300, D2CE specifications

The York D2CE and D2CG series represent cutting-edge advancements in energy-efficient chiller technology, specifically designed to optimize performance in a variety of commercial and industrial applications. These chillers are known for their ability to deliver reliable cooling while minimizing energy consumption, making them a preferred choice for businesses aiming to reduce their carbon footprint and operational costs.

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In summary, the York D2CE and D2CG chillers are leading examples of modern HVAC engineering, combining efficiency, flexibility, and sustainability. Their innovative technologies and thoughtful design make them an excellent addition to any facility looking to enhance its cooling systems while adhering to environmental standards.
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