York YVAA Style A - Page 8

JOHNSON CONTROLS
8
Form 201.28-NM1.1
Issue date: 08/06/2021
List of figures
Figure 1 - YVAA air-cooled screw liquid chiller with variable speed drives .............................................................15
Figure 2 - Chiller control system .............................................................................................................................16
Figure 3 - View of YORK control center user interface ...........................................................................................18
Figure 4 - Lifting using lugs ....................................................................................................................................24
Figure 5 - Acceptable minimum clearances around and between units .................................................................36
Figure 6 - Two pass water pressure drop, English units .........................................................................................39
Figure 7 - Three pass water pressure drop, English units ...................................................................................... 39
Figure 8 - Pipework arrangement ........................................................................................................................... 40
Figure 9 - Leaving water temperature out of range suggested layout .................................................................... 40
Figure 10 - Suggested layout for applications with a ow rate less than the evaporator minimum
allowable ow rate ................................................................................................................................41
Figure 11 - Suggested layout for applications with a ow rate greater than the evaporator maximum
allowable ow rate ................................................................................................................................ 41
Figure 12 - Grooved nozzle .................................................................................................................................... 41
Figure 13 - Flange for GB vessels ..........................................................................................................................43
Figure 14 - Flange attachment ...............................................................................................................................43
Figure 15 - Single point power wiring .....................................................................................................................46
Figure 16 - Dual point power wiring ........................................................................................................................47
Figure 17 - Customer control connections .............................................................................................................48
Figure 18 - Thermal dispersion ow switch connections ........................................................................................49
Figure 19 - Reserved customer wiring entry ..........................................................................................................50
Figure 20 - Water box heater wiring box.................................................................................................................50
Figure 21 - YVAA dimensions .................................................................................................................................82
Figure 22 - LED indicator buttons ...........................................................................................................................98
Figure 23 - Flow switch set .....................................................................................................................................99
Figure 24 - Flow below the representation range ...................................................................................................99
Figure 25 - Flow exceeds the representation range ...............................................................................................99
Figure 26 - Keyboard and display .........................................................................................................................103
Figure 27 - New 331-03478-xxx microboard ........................................................................................................108
Figure 28 - LON E-Link gateway option ............................................................................................................... 113