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Installation
JOB NAME: ______________________________
SALES ORDER #: _________________________
LOCATION: _______________________________
SOLD BY: ________________________________
INSTALLING
CONTRACTOR: ___________________________
START-UP
TECHNICIAN/
COMPANY: _______________________________
START-UP DATE : _________________________
CHILLER MODEL #: _______________________
SERIAL #: ________________________________
CHECKING THE SYSTEM
PRIOR TO INITIAL START (No Power)
Unit Checks
θ
1. Inspect the unit for shipping or installation
damage.
θ
2. Assure that all piping has been completed.
θ
3. Visually check for refrigerant piping leaks.
θ
4. Open suction line ball valve, discharge line ball
valve, and liquid line valve for each system.
θ
5. The compressor oil level should be maintained
so that an oil level is visible in the sight glass.
The oil level can only be tested when the com-
pressor is running in stabilized conditions, guar-
anteeing that there is no liquid refrigerant in the
lower shell of the compressor. In this case, the
oil must be between 1/2 and 3/4 in the sight glass.
At shutdown, the oil level can fall to the bottom
limit of the oil sight glass.
θ
6. Assure water pumps are on. Check and adjust
water pump flow rate and pressure drop across
the cooler (see LIMITATIONS). Verify flow switch
operation.
NOTE: Excessive flow may cause catastrophic
damage to the evaporator.
θ
7. Check the control panel to assure it is free of
foreign material (wires, metal chips, etc.).
θ
8. Visually inspect wiring (power and control). Wir-
ing MUST meet local codes. See Figures 2 - 5.
48
PRE-STARTUP CHECKLIST
θ
θ 10. Check for proper size fuses in main and control
θ 11. Assure 115 VAC Control Power to CTB2 has 15
θ 12. Be certain all water temp sensors are inserted
θ 13. Assure that evaporator TXV bulbs are strapped
PANEL CHECKS
(Power ON – Both Unit Switch OFF)
θ
θ
TABLE 22 – SETPOINTS
OPTIONS
Display Language
Sys 1 Switch
Sys 2 Switch
Unit Type
Chilled Liquid
Ambient Control
Local/ Remote Mode
Control Mode
Display Units
Lead/Lag Control
Fan Control
Manual Override
COOLING SETPOINTS
Cooling Setpoint
Range
EMS-PWM Max. Setpoint
PROGRAM
Discharge Pressure Cutout
Suct. Pressure Cutout
Low Amb. Temp. Cutout
Leaving Liquid Temp. Cutout
Anti-Recycle Time
Fan Control On-Pressure
Fan Differencial Off-Pressure
Total # of Compressors
9. Check tightness of power wiring inside the power
panel on both sides of the motor contactors and
overloads.
circuits, and verify overload setting corresponds
with RLA and FLA values in electrical tables.
AMP minimum capacity. See Table 1, page 19.
completely in their respective wells and are coated
with heat conductive compound.
onto the suction lines at 4 or 8 o'clock positions.
1. Apply 3-phase power and verify its value. Volt-
age imbalance should be no more than 2% of the
average voltage.
2. Apply 115 VAC and verify its value on the termi-
nal block in the Power Panel. Make the measure-
ment between terminals 5 and 2 of CTB2. The
voltage should be 115VAC +/- 10%.
YORK INTERNATIONAL
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