York YPAL 050 User Manual
5
JOHNSON CONTROLS
FORM 100.50-NOM6 (1207)
TABLE OF CONTENTS
FIELD WIRING ............................................................................................................................................33
Thermostat ............................................................................................................................33
Fan input ................................................................................................................................33
Space Sensor ........................................................................................................................33
CO2 Sensor ...........................................................................................................................34
Occupied / Unoccupied Input ..............................................................................................34
Shutdown Input .....................................................................................................................34
Smoke Purge Input ...............................................................................................................34
BAS Economizer Input .........................................................................................................34
Fault Output ..........................................................................................................................34
VAV Heat Relay Output .........................................................................................................35
Supply Air Temperature Reset .............................................................................................35
COMMUNICATION ......................................................................................................................................35
DIRTY FILTER SWITCH ..............................................................................................................................35
FIELD CONTROL WIRING CONNECTIONS ..............................................................................................36
POWER WIRING .........................................................................................................................................37
ELECTRICAL SERVICE SIZING .................................................................................................................37
SINGLE-POINT POWER SUPPLY WIRING ...............................................................................................38
SINGLE-POINT POWER SUPPLY WIRING WITH NON-FUSED DISCONNECT SWITCH .......................39
DUAL-POINT POWER SUPPLY WIRING ...................................................................................................40
CONTROLS .................................................................................................................................................41
TRANSDUCER PNEUMATIC TUBING .......................................................................................................42
Static Pressure Control Plastic Tubing .............................................................................42
Duct Static Transducer .........................................................................................................42
Building Pressure Transducer .............................................................................................42
Static Pressure Probe Installation ......................................................................................42
DUCT SYSTEM ...........................................................................................................................................44
Duct Connection Guidelines ................................................................................................44
SOUND AND VIBRATION TRANSMISSION ..............................................................................................44
GAS HEATING ............................................................................................................................................45
GAS PIPING ................................................................................................................................................45
GAS CONNECTION ....................................................................................................................................45
Gas Piping Recommendations ............................................................................................45
COMBUSTION VENT ..................................................................................................................................46
SECTION 3 – START-UP ...................................................................................................................47
CRANKCASE HEATERS ............................................................................................................................47
CHECKING THE SYSTEM PRIOR TO INITIAL START (NO POWER) ......................................................47
Unit Checks ...........................................................................................................................47
UNIT CHECKS – POWER APPLIED ..........................................................................................................49
Verifying Compressor Rotation ...........................................................................................49
Compressor Oil Level Check ...............................................................................................49