YORK INTERNATIONAL
6
FORM 100.50-NOM1 (604)
Passwords.................................................................................................................................112
SECTION
8
SERVICE
Binary Input Operation ............................................................................................................119
Analog Input Operation............................................................................................................122
Low Ambient Operation - Condenser Fan Motor VSD ...........................................................124
Input/Output Table ...................................................................................................................129
Fault Descriptions ....................................................................................................................131
Wiring Diagrams ......................................................................................................................136
Table 17 – VAV Modes of Operation............................62
Table 18 – Area and K Factor.......................................66
Table 19 – History Function Text .................................99
Table 20 – History Points Data List..............................99
Table 21 – Setpoints and Values ................................. 113
Table 22 – Temperature Sensor Resistance ...............122
Table 23 – Duct Pressure Transducer Output ............122
Table 24 – Building Pressure Transducer Output.......123
Table 25 – AMS Pressure Trans duc er Output ............123
Table 26 – Discharge Pressure Transducer Output.....123
Table 27 – Suction Pressure Transducer Output.........124
Table 28 – Monitor & Control I/O for Primary Unit
Controller.................................................125
Table 29 – Humidity Sensor Output ...........................126
Table 30 – CO2 Sensor Output...................................126
Table 31 – T’stat Interface Board Voltage Outputs ....127
Table 32 – T’stat Interface Board Connections ..........128
Table 33 – Input/Output Table....................................129
Table 34 – Fault Description Table.............................132
Table 1 – Voltage Limitations .................................... 11
Table 2 – Physical Data ..............................................13
Table 3 – Electrical Data ............................................21
Table 4 – Air Flow & Entering Amb. Limitations......23
Table 5 – R-22 Temperature/Pressure Chart...............39
Table 6 – 407C Temperature/Pressure Chart ..............40
Table 7 – Gas Heat Performance Data........................42
Table 8 – Fan Bearing Lubrication Intervals ..............44
Table 9 – Set Screw Torque ........................................50
Table 10 – CV 4 or 6 Compressor Logic - Staging Up 51
Table 11 – CV 4 or 6 Compressor Logic - Staging
Down...........................................................51
Table 12 – VAV Four or Six Compressor Logic -
Staging Up ..................................................51
Table 13 – VAV Four or Six Compressor Logic -
Staging Down .............................................52
Table 14 – Timeouts and Delays ..................................53
Table 15 – Staged Heating Steps ..................................54
Table 16 – Modes of Operation ....................................57
LIST OF TABLES
LIST OF FIGURES
Fig. 1 – Packaged Rooftop Air Con di tion ing Unit ....8
Fig. 2 – Unit Rigging ...............................................12
Fig. 3 – Unit Clearances...........................................12
Fig. 4 – Drain Trap Water Location-Draw Through 24
Fig. 5 – Trap Detail-draw Through Application ......24
Fig. 6 – Network Communication Board.................27
Fig. 7 – Field Control Wiring...................................28
Fig. 8 – FlexSys CTB2 Wiring.................................29
Fig. 9 – Single-point Power Supply Wiring.............31
Fig. 10 – Single-point Power Supply Wiring With
Non-fused Disconnect ................................32
Fig. 11 – Dual-point Power Supply Wiring ...............33
Fig. 12 – Static Pressure Probe Location ...................35
Fig. 13 – Supply Fan Isolator Spring Bolts................37
Fig. 14 – Sheave Alignment.......................................45
Fig. 15 – Fan Data Plate - Belt Tension .....................46
Fig. 16 – Belt Tensioning Gauge................................46
Fig. 17 – Example of FC Fan Shaft/Wheel Marking .47
Fig. 18 – Bearing With Setscrew Type Locking ........49
Fig. 19 – Bearing With Eccentric Cam ......................49
Fig. 20 – Eccentric Cam Locking Collar ...................50
Fig. 21 – Split Bearing ...............................................50
Fig. 22 – CV Space Sensor Cooling Al go rithm -
Economizer Not Suitable............................55
Fig. 23 – CV Space Sensor Cooling Algorithm -
Economizer Suitable...................................55
Fig. 24 – CV Space Sensor Stepped Heat Algorithm 56
Fig. 25 – CV Space Sensor Hydronic Heat Algorithm56
Fig. 26 – VAV Occupied Heating To Maintain RAT
Morning Warm Up .....................................59
Fig. 27 – VAV Unoccupied Stepped Heating
Temperature Control ...................................59
Fig. 28 – VAV Unoccupied Cooling Tem per a ture
Control ........................................................60
Fig. 29 – Compressor Staging For VAV Cooling.......60
Fig. 30 – Occupied Heating And Cooling Setpoint
Selection Algorithm ....................................61
Fig. 31 – OAD Minimum Position Reset...................65
Fig. 32 – Minimum Flow Measurement
Arrangement ...............................................67
Fig. 33 – Control For Minimum AMS – Economizer
Not Available ..............................................67
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