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
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
PROGRAM
Discharge Pressure Cutout
Suct. Pressure Cutout
Low Amb. Temp. Cutout
Leaving Liquid Temp. Cutout
Fan Control
Fan Differential
Total # of Compressors
54 | YORK INTERNATIONAL |
