York YLAA Series Installation Operation & Maintenance page 103

FORM 150.72-ICOM6
ISSUE DATE: 12/29/2017
Supersedes: 150.72-CL1 (817)
CUSTOMER: ____________________________________
ADDRESS: _____________________________________
PHONE: ________________________________________
JCI TEL NO: _____________________
CHILLER MODEL NO: ____________________________
The work (as checked below) is in process and will be completed by:
The following work must be completed in accordance with installation instructions:
A. PRE-STARTUP
Unit Checks (No Power)
The following basic checks should be made with the
customer power to the unit switched OFF.
1. Inspect the unit for shipping or installation
damage ...................................................................
2. Assure that all piping has been completed. ............
3. Visually check for refrigerant piping leaks ...............
4. If available, open suction line ball valve, discharge
line ball valve, and liquid line valve for each
system .....................................................................
5. At shutdown, the oil level should be between
the bottom and middle of the oil equalizing sight
glass. .......................................................................
6. Are water pumps ON?
a. Check and adjust water pump flow rate and
pressure drop across the cooler Refer to Op-
erating Limitations, SECTION 8 - TECHNICAL
DATA (Form 150.72-ICOM6). .............................
b. Is the flow switch in place, wired properly, and
operational? ........................................................
c. Are the chilled water pumps operational? ..........
d. Is the water system filled with water? .................
e. Is ALL air purged from the water system? .......
NOTE: Any air found in the water system
MUST be purged before the chiller can start up.
Excessive flow may cause catastrophic dam-
age to the heat exchanger (evaporator)
7. Is the control panel free of foreign material (wires,
metal chips and so on)? ..........................................
JOHNSON CONTROLS
STARTUP CHECKLIST
JOB NAME: ____________________________________
LOCATION: ____________________________________
CUSTOMER ORDER NO: _________________________
JCI ORDER NO: __________________
UNIT SERIAL NO: _______________________________
_____________ / ____________ /
8. Is ALL power wired to the chiller and meets N.E.C.
and local codes?
a. High voltage ........................................................
b. Low voltage ........................................................
c. Check tightness of power wiring inside the pow-
d. Check to ensure BAS control is wired correctly
9. Check for proper size fuses in main and control
circuits, and verify overload setting corresponds
with RLA and FLA values in electrical tables (see
Table 8 and Table) ...................................................
10. Assure 120VAC (110VAC for 50Hz units) Control
Power to TB1 has 15 amp minimum capacity. .........
11. Are all water temp sensors inserted completely into
their respective wells and are coated with heat con-
ductive compound? .................................................
12. Are the evaporator TXV bulbs strapped onto the
suction lines at 4 or 8 o'clock positions or suction
temp. sensors if EEVs are installed? ......................
13. Do all sides of the unit have the recommended
amount of space for air ventilation? Refer to SEC-
TION 4 - INSTALLATION (Form 150.72-ICOM6). ...
14. Does the cabinet edge clear the insulation of cable
at the power entry to avoid slicing the cable? .........
B. COMPRESSOR HEATER
(Power On - 24 Hours Prior To Start)
Apply 120VAC and verify its value between terminals
5 and 2 of XTBC2. The voltage should be 120VAC
(110VAC for 50Hz units) plus or minus 10% .................
SECTION 6 – COMMISSIONING
Form 150.72-CL1 (1217)
MODEL - YLAA
JCI CONTRACT NO: ______________
___________
Month Day
er panel on both sides of the motor contactors
and overloads. ....................................................
and operational. ...................................................
NOTE: Power must be applied 24 hours prior
to start-up. Each heater should draw approxi-
mately 0.5 to 1A.
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