York YLAA0180 - STARTUP CHECKLIST; A. PRE-STARTUP; B. COMPRESSOR HEATER

JOHNSON CONTROLS
102
FORM 150.72-ICOM7
ISSUE DATE: 10/22/2020
SECTION 6 – COMMISSIONING
JOHNSON CONTROLS
1
b. Low voltage .........................................................
c. Check the tightness of the power wiring inside
the power panel on both sides of the motor
contactors and overloads ....................................
d. Check that the BAS control is wired correctly
and operational ....................................................
9. Check for proper size fuses in main and control
circuits, and verify that the overload setting cor-
responds with RLA and FLA values in electrical
tables (see Table 8 and Table) ................................
10. Ensure that the 120 VAC (110 VAC for 50 Hz units)
Control Power to TB1 has 15 A minimum capacity .....
11. Check that all water temperature sensors are in-
serted completely into their respective wells and
are coated with heat conductive compound .............
12. Check that the evaporator TXV bulbs are strapped
onto the suction lines at 4 or 8 o'clock positions or
suction temperature sensors if EEVs are installed ..
13. Check that all sides of the unit have the recom-
mended amount of space for air ventilation. Refer
to SECTION 4 - INSTALLATION (Form 150.72-
ICOM6) ....................................................................
14. Check that the cabinet edge clears the insulation
of the cable at the power entry to avoid slicing the
cable ........................................................................
B. COMPRESSOR HEATER
(Power On - 24 Hours Before Start)
Apply 120 VAC and verify its value between terminals
5 and 2 of XTBC2. The voltage should be 120 VAC
(110 VAC for 50 Hz units) plus or minus 10%. ..............
NOTE: Power must be applied 24 hours before start-up.
Each heater should draw approximately 0.5 A to 1 A.
A. PRE-STARTUP
Unit Checks (No Power)
 Turno󰀨thecustomerpowertotheunitandperformthe
following checks.
1. Inspect the unit for shipping or installation
damage ....................................................................
2. Ensure 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, check that the oil level is between the
bottom and middle of the oil equalizing sight glass ..
6. Are the water pumps ON?
a. Checkandadjustthewaterpumpowrateand
pressure drop across the cooler. Refer to Operat-
ing Limitations, SECTION 8 - TECHNICAL DATA
(Form 150.72-ICOM6). ........................................
b. Istheowswitchinplace,wiredproperly,and
operational? .........................................................
c. Are the chilled water pumps operational? ...........
d. Isthewatersystemlled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. Exces-
siveowmaycausecatastrophicdamagetothe
heat exchanger (evaporator).
7. Check that the control panel is free of foreign mate-
rial (for example, wires and metal chips) .................
8. Check that all power is wired to the chiller and meets
the following NEC and local codes.
a. High voltage .........................................................
STARTUP CHECKLIST
INSTALLATION CHECKLIST
YLAA
Supersedes 150.72-CL1 (818)
Form 150.72-CL1 (320)
The following work must be completed in accordance with installation instructions:
CUSTOMER: ____________________________________
ADDRESS: _____________________________________
PHONE: ________________________________________
JCI TEL NO: _____________________ JCI ORDER NO: __________________ JCI CONTRACT NO: ______________
JOB NAME: ____________________________________
LOCATION: ____________________________________
CUSTOMER ORDER NO: _________________________
CHILLER MODEL NO: ____________________________
The work (as checked below) is in process and will be completed by: _____________ / ____________ / ___________
UNIT SERIAL NO: _______________________________
Month Day Year