York YCAL0014SC Pre-Startupchecklist, Installation, Job Name: ______________________________

Installation

PRE-STARTUP CHECKLIST

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

G1. Inspect the unit for shipping or installation damage.

G2. Assure that all piping has been completed.

G3. Visually check for refrigerant piping leaks.

G4. Open suction line ball valve, discharge line ballvalve, and liquid line valve for each system.

G5.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 compressor is running in stabilized conditions, guaranteeing that there is no liquid refrigerant in the lower shell of the compressor. In this case, the oil should be between 1/4 and 3/4 in the sight glass. At shut- down, the oil level can fall to the bottom limit of the oil sight glass.

G6. Assure water pumps are on. Check and adjust water pump flow rate and pressure drop across the cooler (see LIMITATIONS). Verify flow switch operation.

Excessive flow may cause catastrophic damage to the evaporator.

G7. Check the control panel to assure it is free of foreign material (wires, metal chips, etc.).

G8. Visually inspect wiring (power and control). Wir- ing MUST meet N.E.C. and local codes. See Fig- ures 2- 5, pages 14 - 17.

G9. Check tightness of power wiring inside the power panel on both sides of the motor contactors and overloads.

G10. Check for proper size fuses in main and control circuits, and verify overload setting corresponds with RLA and FLA values in electrical tables.

G11. Assure 120VAC Control Power to CTB2 has 15 AMP minimum capacity. See Table 1, page 20.

G12. Be certain all water temp sensors are inserted completely in their respective wells and are

coated with heat conduc-

tive compound.

G13. Assure that evaporator TXV bulbs are strapped onto the suction lines at 4 or 8 o’clock positions.

PANEL CHECKS

(POWER ON – BOTH UNIT SWITCH OFF)

G1. Apply 3-phase power and verify its value. Volt- age imbalance should be no more than 2% of the average voltage.

G2. Apply 120VAC 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 120VAC +/- 10%.

TABLE 25 – 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 Differential Off-Pressure

Total # of Compressors

54 YORK INTERNATIONAL