York YHAU-CW Manual page 100

SECTION 5 - COMMISSIONING
Form 155.31-CL1.EN.UL
ISSUE DATE: 12/21/2018
F. Evacuate Nitrogen Charge
1. Remove the plug in the purge line. ..........................
2. Release the Nitrogen gas until the high-tempera-
ture generator compound gas reads approximately
0.005 MPa.G (0.725 PSI) .........................................
3. Reinstall the plug in the purge line. ..........................
4. Navigate to the Control Panel Setting screen. .........
5. Press the Purge Pump ON button ...........................
6. Check the oil level in the purge pump ......................
7. Using the vacuum pump, evacuate the Nitrogen
gas until the high-temperature generator compound
gauge indicates almost -0.1 MPa.G (-14.5 PSI) ......
8. Close all open manual valves ..................................
9. Press the Purge Pump OFF button. .........................
10. Turn the power switch (MCB) off. .............................
11. Replace or add oil to the purge pump ......................
G. Panel Checks
1. The thermal relays conform to the factory inspec-
tion sheet ................................................................
2. The interlock and answerback signals for the fol-
lowing work properly:
a. Chilled water pump ..............................................
b. Cooling water pump .............................................
3. The indicators on the control panel are correct ........
4. The temperature setting parameters for capac-
ity control are correct ...............................................
5. Date and time reflect the local time zone .................
6. The rotation direction is correct for the following:
a. Solution circulation pump ....................................
b. Solution spray pump ............................................
7. The water flow suspension switch works properly ...
NOTES:
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JOHNSON CONTROLS
100
START UP CHECKLIST
A. Operation Check
1. Manually start each water pump. ............................
2. Confirm the water box covers do not leak during
water pump operation. .............................................
3. Stop each water pump manually. .............................
4. Set each water pump operation mode to automatic
mode ........................................................................
5. Navigate to the Setting screen. ................................
6. Press the Manual Purge ON button. ........................
7. Purge non-condensable gas from the absorber
continuously. Use the procedure detailed in SEC-
TION 7 - MAINTENANCE of the manual ................
8. Open the refrigerant manual blow valve. .................
9. Navigate to the Control Panel Setting screen. ........
10. Press the Control Valve Mode Manual button. ........
11. Make sure that the Refrigerant Pump Auto button
is pressed. ................................................................
12. Verify that the steam control valve is closed. ...........
13. Press the OPER. button on the Control Panel Set-
ting screen. ..............................................................
14. Check that the
a. Solution circulation pump ....................................
b. Solution spray pump ............................................
c. Refrigerant pump .................................................
15. Check for abnormal noise or vibration .....................
16. Gradually open the steam control valve or
steam drain control valve.....
17. Press the Control Valve Mode Auto button. ............
18. Check that the steam control valve or steam drain
control valve works automatically according to the
chilled water outlet temperature ............................
FORM 155.31-ICOM2.EN.UL
ISSUE DATE: 12/21/2018
following start properly:
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3
JOHNSON CONTROLS