York R-407C manual Field Control Wiring

Page 34

Field Control Wiring

Wiring Notes:

1.Wiring shown indicates typical wiring.

2.All wiring is Class 2, low voltage.

3.Maximum power available from the 24 VAC terminal is 40 VA.

4.Use shielded wire where shown.

7 Wire Thermostat

COMMON

R (24VAC)

Y1 (Cool Stage 1)

Y2 (Cool Stage 2)

 

G (Fan)

 

 

Space Sensor

 

 

 

* Use Shielded Wire

1K Nickel

Signal

 

 

 

RTD Sensor

Common

 

 

1.5K Adjust

Signal

 

* Use Shielded Wire

 

 

Potentiometer

Common

 

 

 

 

 

CO2 Sensor

 

Signal

 

* Use Shielded Wire

 

 

0-5V Output

 

 

Common

 

 

 

 

 

 

 

 

 

COM

R (24 VAC)

Y1

Y2

 

 

G

 

SS+ SS- SSA+ SSA- IAQ+ IAQ-

R (24 VAC)

OCC SD SMK HR COM

1

2

3

4

5

6

7

8

9 10 11 12 13 14 15 16

17 18 19 20 21

 

 

 

 

 

 

 

SHIELD

 

SHIELD

 

Note, 24VAC switch voltage must be sourced from the unit. Use of another power source external of the unit may cause equipment damage.

Occupied /

Unoccupied Input

Shutdown Input

Smoke Purge Input

VAV Heat

24 VAC Signal

Relay Output

Common

Closed = Occupied

Open = Unoccupied

Closed = Shutdown

Open = Normal

Closed = Smoke Purge

Open = Normal

Note: VAV Heat Relay output shall be used to

command the VAV boxesLD06158 to open full.

FIG. 5 – FIELD CONTROL WIRING

34

YORK INTERNATIONAL

Image 34
Contents Packaged Rooftop Air Conditioning Units 407C Optimized Through 65 TonsTable of Contents Nomenclature Basic Model NumberIntroduction FEATURES/BENEFITSEcological and Economical Design Install with Ease and Safety ServiceabilityReliable Scroll Compressor Technology Introduction Physical Data Physical DataPhysical Data Cont’d Rigging Application DataLocation EconomizerBuilding Exhaust Systems Harsh Environments Condenser and Evaporator Coil ProtectionRoof Curb Given Selection ProcedureAcoustical Considerations Select UnitCooling Performance Data 50 Ton Model Cooling Performance Data 50 TON ModelCooling Performance Data 50 TON Model CONT’D Cooling Performance Data 55 Ton Model Cooling Performance Data 55 TON ModelCooling Performance Data 55 TON Model CONT’D Cooling Performance Data 60 Ton Model Cooling Performance Data 60 TON ModelCooling Performance Data 60 TON Model CONT’D Cooling Performance Data 65 Ton Model Cooling Performance Data 65 TON ModelCooling Performance Data 65 TON Model CONT’D 50 Through 65 TON Supply FAN Data Fan Performance50 Through 65 TON Supply FAN Data CONT’D 50 Through 65 TON Exhaust FAN Data Component Static Pressure Drops Inches of Water Column Filters Economizer Economizer Dampers Rigid Filter Manual or Load Definitions Electrical Service SizingElectrical Data CompressorsPremium Efficiency Supply and Exhaust FAN Motor ODP or TefcHigh Efficiency Condenser FAN Motors / EachControl Sequences for ALL Units Unoccupied / Occupied SwitchingControls GeneralVentilation Control Sequences Exhaust Control SequencesLOW Ambient Operation Smoke Purge SequencesVAV Specific Sequences Cooling OperationCooling Operation Thermostat Control Stand Alone ControlCV Specific Sequences Stage 1 Y1 CallPower Wiring SINGLE-POINT Power Supply WiringSINGLE-POINT Power Supply Wiring With NON-FUSED Disconnect SINGLE-POINT Power Supply Wiring with NON-FUSED DisconnectDUAL-POINT Power Supply Wiring DUAL-POINT Power Supply WiringField Control Wiring Field Control WiringDrawing General ArrangementBottom Supply Bottom Return Left or Right Rear Return Supply General Arrangement DrawingCurb Layout Drawing Curb Layout DrawingSupply AIR System Guide SpecificationsConstruction Bearings and DrivesAIR Inlet System Power SupplyAIR Filtering System Refrigeration SystemControls Accessories and OptionsEconomizers Condenser Coil Protection Relief SystemEvaporator Coil Protection Suction and Discharge Pressure Transducers moniYork International York International Proud Sponsor Olympic Team