York YVAA Style A, Installation Operation & Maintenance

Page: 8 / 184

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 flow rate less than the evaporator minimum
allowable flow rate ................................................................................................................................41
Figure 11
- Suggested layout for applications with a flow rate greater than the evaporator maximum
allowable flow 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 flow 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