Specifications

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FORM 160.80-NOM1
YORK INTERNATIONAL
SECTION 2 – START-UP
YS CHILLER COMMISSIONING CHECKLIST
This checklist is provided as a guide to the service tech-
nician to ensure the YS Chiller is properly commissioned.
c This symbol indicates that the feature described is
programmable or selectable from Graphic Control
Center. Refer to Operational Form 160.80-O1 and
the Service Manual Form 160.80-M1 for more in-
formation concerning the Graphic Control Center.
The specific Graphic Control Center screen is listed
in bold capital text, followed by the setpoints or op-
erating parameters that can be configured in that
screen.
* An asterisk following one of the Graphic Control
Center programmable or selectable features indi-
cates that the default value has been pre-pro-
grammed into Graphics Control center at one of the
YORK factories.
YS CHILLERS PRE-STARTUP CHECKLIST
Installation
% Check all utility interconnections to the chiller: wa-
ter piping, electrical and control wiring to the chiller.
% Verify that the chiller is level.
% Check the mounting spring isolators or vibration
isolators for equal loading.
% Check the relief valve piping for excessive load
on the relief devices.
Form 2, Form 3 and Form 7 Shipments
% A Vacuum Dehydration Unit is required for all field
re-assembled YS Chillers; Form 3 and Form 7. In
addition, Form 2 YS Chillers shipped without re-
frigerant require a Vacuum Dehydration proce-
dure prior to commissioning. Refer to the Vacuum
Dehydration procedure detailed in YORK Form
160.80-N1, Field Re-Assembly for Form 3 &
Form 7 Shipments (Style E).
Evaporator and Condenser Flow Rates
% Check for properly installed and clean strainers in
the water supply lines to the evaporator and con-
denser. Clean and properly installed water strain-
ers is a YORK warranty requirement.
c Refer to the Sales Order screen for the Evapora-
tor and Condenser design flow rates and pressure
drops. Use the pressure drops to establish the cor-
rect flow rates.
EVAPORATOR SCREEN
Enter the following setpoints:
c Leaving Chilled Liquid Temperature (except ISN
Remote Mode)
c Remote Leaving Chilled Liquid Temperature
Setpoint Range (except ISN Remote mode)
c Low Chilled Liquid Temperature, Cycling
Shutdown Temperature
c Low Chilled Liquid Temperature, Cycling
Shutdown Restart Temperature
c Leaving Chilled Liquid Temperature Control
Sensitivity
c Brine Low Evaporator Pressure Cutout
Threshold*
c Ice Storage Mode ON/OFF
c Smart Freeze Protection ON/OFF
c Refrigerant Temperature Sensor ENABLE/
DISABLE
CONDENSER SCREEN
Enter the following setpoints:
c Enter the High Pressure Limit/Warning
Threshold setpoint.
c Freeze Warning (standby chiller freeze
protection) ENABLE/DISABLE
c Freeze Warning time delay
Flow Safety Devices
% Locate the flow safety devices and confirm their
interconnection to the Graphic Control center.
% Verify the operation of the flow safety devices.
Simulate the low flow condition and make certain
the switch is opening under the low flow condition.
Removing a wire connection will simulate only the
electrical connection, not the functional operation
of the flow safety device.
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