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Use the following checklist during commissioning to as-
sure all Setpoints have been programmed to the de sired
value and all calibrations have been performed. The
pro gram ming of some of the Setpoints require a SER-
VICE access level. To assure access to all Setpoints,
login at SERVICE access level before beginning. The
Setpoints are grouped under the Display Screen in which
they ap pear. The indented screens are subscreens of the
num bered screens and are accessed from the numbered
screens. An explanation of each setpoint or Calibration
Procedure below is contained in the reference doc u ment
listed in parenthesis adjacent to each item. If any of the
Setpoints have to be changed, use the standard pro gram -
ming procedures in Operation Manual Form 160.54-O1.
Thresholds, values and calibrations of items marked with
an asterisk "*" have been determined and entered/set at
the YORK Factory at the time of man u fac ture.
1. PROGRAM JUMPERS/SWITCHES:
(160.54-M1)
____ Verify Microboard Program Jumpers and
Pro gram Switches are confi gured appropriately.
2. EVAPORATOR Screen: (160.54-O1)
Enter the following Setpoints:
____ Leaving Chilled Liquid Temp (except ISN
Re mote mode)
____ Remote Leaving Chilled Liq uid Temp
Setpoint Range (except ISN Remote mode)
____ Low Chilled Liquid Temp cycling shutdown
tem per a ture
____ Low Chilled Liquid Temp cycling shutdown
Re start temperature
____ Leaving Chilled Liquid Temp control Sen si -
tiv i ty (160.54-M1)
____ Brine Low Evaporator Pressure Cutout thresh-
old* (160.54-M1)
____ Smart Freeze Protection On/Off (160.54-
M1)
____ Refrigerant Temp sensor Enable/Disable
(160.54-M1)
3. CONDENSER Screen: (160.54-M1)
____ Enter the High Pressure Limit/Warning
thresh old Setpoint
____ Drop Leg refrigerant Temp Sensor Enable/
Dis able
REFRIGERANT LEVEL CONTROL/
TUNING Screen: (160.54-M1)
YORK INTERNATIONAL
SECTION 25
SYSTEM COMMISSIONING CHECKLIST
Verify the following Setpoints:
____ Level Setpoint*
____ Control Period*
____ Proportional Limit Open*
____ Proportional Limit Close*
____ Rate Limit Open*
____ Rate Limit Close*
____ Manual or Auto control (as desired)
____ Verify Refrigerant Level Sensor cal i bra tion
4. COMPRESSOR Screen: (160.54-M1)
____ Select Pre-rotation Vanes Manual or Auto
con trol.
PROXIMITY PROBE CALIBRATION Screen
(except "P" Compressors):
____ Verify that a Proximity Probe Reference
Position* had been entered.
PRE-ROTATION VANES CALIBRATE
Screen:
____ Perform Pre-rotation Vanes calibration
(com pres sor motor VSD and Hot Gas Bypass ap-
pli ca tions only)
VSD TUNING Screen:
____ Select Auto or Manual compressor mo tor
fre quen cy control (compressor motor VSD ap pli -
ca tions only)
5. HOT GAS BYPASS Screen: (160.54-M1)
If chiller is equipped with optional Hot Gas By pass,
enable operation on the OPERATIONS screen and
enter the following setpoints:
____ Maximum Open (Flash Memory Card ver-
sion C.MLM.01.05.xxx and later)
____ Surge Sensitivity (moved to Surge Pro-
tec tion Screen in Flash Memory Card version
C.MLM.01.05.xxx and later)
____ Hold Period
____ Close Percentage
____ Minimum Load
____ Manual or Auto Control, as desired
6. SURGE PROTECTION Screen: (160.54-M1)
( Flash Memory Card version C.MLM.01.05.xxx
and lat er)
FORM 160.54-M1(503)
25
165
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