Johnson Controls YORK YK MaxE, Operation Manual

Page: 109 / 184

FORM 160.54-O1
109
JOHNSON CONTROLS
2
Standard Extended
“Warning – High Pressure Limit” – Maximum allowable value (PSIG): 162.5 193
“Condenser – High Pressure” – Trip/reset threshold (PSIG): 180/120 200/140
“Condenser – High Pressure Stopped” – Trip/reset threshold (PSIG): 160/160 170/170
PRV Position
(Software version C.OPT.01.21.307 and later)
Access Level Required: SERVICE
New production chillers after June 2009 can be equipped
with an optional Pre-rotation Vanes Potentiometer,
regardless of other options. This setpoint allows the
software to be used in all YK chillers, whether equipped
with the potentiometer or not. The PRV position will be
shown on respective screens when Enabled.
• Enabled – Automatically set to this setting if Hot
Gas Bypass or Variable Geometry Diffuser (VGD)
is enabled on the OPERATIONS Screen or Motor
Drive Type Setpoint is set to VSD or MVVSD. The
actual connection point of the potentiometer is deter-
mined by the equipment configuration: If equipped
with a VSD in YORK protocol configuration, it is
connected to the ACC Board; in MODBUS protocol
configuration, it is connected to the Microboard J7.
If not equipped with VSD, but equipped with Hot
Gas Bypass, the connection point is determined by
which I/O Board is present: with I/O Board 371-
02514-000, it is connected to this board; otherwise,
it is connected to the Microboard J7. If not equipped
with Hot Gas Bypass but equipped with a VGD, it
is connected to the Microboard J7.
• Disabled – Set to this position when not equipped
with a PRV potentiometer. If equipped with a VSD,
MVVSD or the Hot Gas Bypass or Variable Geom-
etry Diffuser is enabled, this setpoint is automati-
cally enabled and cannot be set to disabled.
Heat Recovery
(Software version C.OPT.01.21.307 and later)
Access Level Required: SERVICE
Allows the Service Technician to enable or disable
the Heat Recovery feature. Refer to Service Manual
160.54-M1.
Head Pressure Control
(Software version C.OPT.01.21.307 and later)
Access Level Required:
SERVICE
Allows the Service Technician to enable or disable the
Head Pressure Control feature. Refer to Service Manual
160.54-M1.
NaVigatioN
Home
Access Level Required : VIEW
Causes an instant return to the Home Screen.
Schedule
Access Level Required
: VIEW
Moves to the sub-screen allowing definition of the chiller
operation schedule.
Diagnostics
Access Level Required : SERVICE
Moves to the sub-screen allowing limited diagnostic
capability while operating. Refer to YORK Service
Manual 160.54-M1
Comms
Access Level Required
: VIEW
Moves to the sub-screen allowing configuration of sys -
tem communications.
Printer
Access Level Required
: VIEW
Moves to the sub-screen allowing configuration and
control of printer functions.
Sales Order
Access Level Required
: VIEW
Moves to the sub-screen displaying the Sales Order
information for the chiller system.
Operations
Access Level Required
: VIEW
Moves to the sub-screen displaying operating parameters
of the chiller system.
User
Access Level Required
: VIEW
Moves to the sub-screen allowing configuration of user
preferences.