York YR TB TB T0 - Page 7

JOHNSON CONTROLS
7
FORM 160.81-NOM1
ISSUE DATE: 10/3/2020
LIST OF FIGURES
LIST OF TABLES
FIGURE 1 - Unit Rigging ........................................................................................................................................ 11
FIGURE 2 - Compressors – Evaporator, Condenser and Waterboxes Dimensions ............................................... 14
FIGURE 3 - Standard Neoprene Vibration Isolator Pad Mounts (English) .............................................................16
FIGURE 4 - Standard Neoprene Vibration Isolator Pad Mounts (Metric) ...............................................................17
FIGURE 5 - Spring Isolators (Optional) (English) ................................................................................................... 18
FIGURE 6 - Spring Isolators (Optional) (Metric) ..................................................................................................... 19
FIGURE 7 - Model YR – Front View of Assembled Unit .........................................................................................20
FIGURE 8 - Rigging Compressor Assembly ........................................................................................................... 21
FIGURE 9 - Form 3 Field Assembly – Exploded View ...........................................................................................23
FIGURE 10 - Form 7 Shipment ..............................................................................................................................24
FIGURE 11 - Form 7 Field Assembly – Exploded View ......................................................................................... 26
FIGURE 12 - Form 8 Field Assembly – Exploded View .........................................................................................28
FIGURE 13 - Saturation Curve ...............................................................................................................................29
FIGURE 14 - Schematic of a Typical Piping Arrangement .....................................................................................33
FIGURE 15 - Cooling Tower Piping with 3 Port By-Pass Valve ..............................................................................34
FIGURE 16 - Typical Refrigerant Vent Piping from Relief Valves ........................................................................... 35
FIGURE 17 - YR Motor Connections (Electro-Mechanical Starter) ........................................................................37
FIGURE 18 - YR Screw Chiller Component Layout Drawing – Design Level “A” ...................................................46
FIGURE 19 - YR Screw Chiller System Schematic – Design Level “A” ................................................................47
FIGURE 20 - Oil Filter System ................................................................................................................................49
FIGURE 21 - Oil Solenoid Valve Assembly ............................................................................................................51
FIGURE 22 - Variable Orice ..................................................................................................................................51
FIGURE 23 - Charging Oil ......................................................................................................................................59
FIGURE 24 - Oil Filters ........................................................................................................................................... 60
FIGURE 25 - Dual Oil Filter Isolation Valve ............................................................................................................61
FIGURE 26 - Diagram, Megohm Motor Windings ..................................................................................................65
FIGURE 27 - Evacuation of the Chiller ...................................................................................................................70
TABLE 1 - Construction Drawings (Product Drawings) Issued by the Johnson Control Service Office ................... 9
TABLE 2 - Service Clearance Requirements ........................................................................................................ 10
TABLE 3 - Unit Weights ......................................................................................................................................... 12
TABLE 4 - Overall Dimensions .............................................................................................................................. 15
TABLE 5 - Form 3 Field Assembly Parts ............................................................................................................... 22
TABLE 6 - Form 7 Field Assembly Parts ............................................................................................................... 25
TABLE 7 - Form 8 Field Assembly Parts ............................................................................................................... 27
TABLE 8 - Oil Quantities ....................................................................................................................................... 27
TABLE 9 - System Pressures ................................................................................................................................ 30
TABLE 10 - Water Flow Rate Limits – GPM (L/S) ................................................................................................. 32
TABLE 11 - Refrigerant Relief Characteristics ...................................................................................................... 36
TABLE 12 - Variable Orifice Pressure Differential Setpoints ................................................................................. 51
TABLE 13 - Operation / Inspection / Maintenance Requirements for York YR Chillers ......................................... 57
TABLE 14 - Maintenance Schedule ...................................................................................................................... 57
TABLE 15 - Compressor Oil Limits ........................................................................................................................ 58
TABLE 16 - York Oil Type for R-134a .................................................................................................................... 58
TABLE 17 - Refrigerant Charge Level ................................................................................................................... 62
TABLE 18 - Troubleshooting ................................................................................................................................. 71
TABLE 19 - SI Metric Conversion .......................................................................................................................... 75