OPERATIONS & MAINTENANCE MANUAL - McCormick PCS Info
OPERATIONS & MAINTENANCE MANUAL - McCormick PCS Info OPERATIONS & MAINTENANCE MANUAL - McCormick PCS Info
MAINTENANCE MANAGEMENTOPERATIONS & MAINTENANCE MANUALC • 2/Page 3 of 8No. C • 2Overtime HVACThis calculation has been structured to assure fair and equitable billing of overtime HVAC in thoseinstance where numerous tenants request overtime HVAC. On the following work sheets enteryour cost values only in the “green cells,” or unprotected cells where information values arerequired.The following data will be required to conduct the OTAC calculations:1. Project Name 15. Cooling Tower Run-time2. Chiller Unit 16. O.A. & T.E. Fan Amperage3. Chiller Tonnage Capacity 17. Air Compressor Amperage4. Chiller Design KW per Ton 18. Air Compressor Run-time5. Min. Load # AHUs & VAV Boxes 19. Equipment Cost for Plant6. Average Amperage per AHU 20. Equipment Estimated Life7. Building Average Voltage 21. Annual Run-time8. Average Cost per KW 22. Maintenance Cost:9. # Condenser Pumps a. Air filters10. Total Condenser GPM Rate b. Water treatment11. Cycles of Concentration c. HVAC Supplies12. Chill water pump Amperage d. Misc. Supplies13. Condenser pump Amperage e. Man-power14. Cooling Tower Amperage 23. Water & Sewage Cost© 1992 - 1997, Michael Robert McCormickAll Rights Reserved
MAINTENANCE MANAGEMENTOPERATIONS & MAINTENANCE MANUALC • 2/Page 4 of 8No. C • 2Overtime HVACCalculation ExampleStep One -- Electrical CostsA. Water Chilling Unit(1) Condition #1 -- Minimum Load (4 AHUs):Design KW per Ton x minimum load = Total Ch.71 x 30% of 300 Tons = Total Chiller KW at condition #1.71 x 90 = 63.90 KW(2) Condition #2 -- Other Load (5 AHUs):Design KW per Ton x load = Total Chiller KW at condition #2.71 x (min. load in tons : number of AHUs run at min. load)x 5 = Total Chiller KW at condition #2.71 x (90 : 4) x 5 = 79.9 KW at condition #2(3) Condition #3 -- Other Load (6 AHUs):Design KW per Ton x load = Total Chiller KW at condition #3.71 x (min. load in tons: number of AHUs run at min. load)x 6 = Total Chiller KW at condition #3.71 x (90 : 4) x 6 = 95.85% KW at condition #3NOTE: Carry out the calculation to the extent necessary.© 1992 - 1997, Michael Robert McCormickAll Rights Reserved
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<strong>MAINTENANCE</strong> MANAGEMENT<strong>OPERATIONS</strong> & <strong>MAINTENANCE</strong> <strong>MANUAL</strong>C • 2/Page 3 of 8No. C • 2Overtime HVACThis calculation has been structured to assure fair and equitable billing of overtime HVAC in thoseinstance where numerous tenants request overtime HVAC. On the following work sheets enteryour cost values only in the “green cells,” or unprotected cells where information values arerequired.The following data will be required to conduct the OTAC calculations:1. Project Name 15. Cooling Tower Run-time2. Chiller Unit 16. O.A. & T.E. Fan Amperage3. Chiller Tonnage Capacity 17. Air Compressor Amperage4. Chiller Design KW per Ton 18. Air Compressor Run-time5. Min. Load # AHUs & VAV Boxes 19. Equipment Cost for Plant6. Average Amperage per AHU 20. Equipment Estimated Life7. Building Average Voltage 21. Annual Run-time8. Average Cost per KW 22. Maintenance Cost:9. # Condenser Pumps a. Air filters10. Total Condenser GPM Rate b. Water treatment11. Cycles of Concentration c. HVAC Supplies12. Chill water pump Amperage d. Misc. Supplies13. Condenser pump Amperage e. Man-power14. Cooling Tower Amperage 23. Water & Sewage Cost© 1992 - 1997, Michael Robert <strong>McCormick</strong>All Rights Reserved
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