36C25719Q0990-002.docx

500 Tons Mobile Air Cooled Chiller Unit

Scope of Work:

The Department of Veterans Affairs (VA), Central Texas Veterans Health Care System plans to acquire 500 tons mobile air cooled chiller unit.

Visit site prior to bid in order to be fully acquainted with existing site conditions and scope of work. It is contractor responsibility to field verify all existing devices, chilled water piping, pump, equipment, electrical connection, measurements, equipment room, equipment connection and areas provided in scope of work. All chiller unit, pump, breaker, wires conduits, electrical and control panel and installation shall meet the NFPA 70, VA Specification and also for outdoor use unit. It is a turnkey project including startup testing, connection, reconnection power and piping, fill water in the line and son on.

1. Submit an air unit design package on DOT rated flatbed trailer with safety side/back rails (two aluminum rails approximately 4 ft high and 2 ft high)

2. Provide new DOT 53 ft L x 102 in W, flatbed trailer with new wheel for chiller unit to be mounted

3. Provide all aluminum construction floor, removal aluminum side/back rails, widespread air ride with a California/Canada legal rear axle slide, (17) pair of pop up chain ties in floor, LED lights with 5 marker lights per side, 4 way plug in rear, two side tool boxes, Hendrickson HLX5 grease hubs with a 5year warranty

4. Provide high efficiency, two stage 500 tons rust prove out door air cooled UL Listed chiller unit with control unit to supply 44 deg leaving water temp or lower. Evaporator max flow continuous rate 1400 gpm and min 400 gpm.

5. The air cooled chiller packaged on the trailer shall be suitable for the DOT road transportation with pump, bypass, single point electrical connection and pipping connections

6. Provide direct expansion evaporator

7. Provide fin tube condensing coil to prevent coil damage during transportation (Note: No micro channel condensing coils)

8. Provide refrigerant – R134a and 460V/3/60 unit with UL Listed control transformer, lockable breaker handle and TEAO fan motors

9. The condenser unit designed for outdoor air up to the 95 deg F

10. Provide a pump with chiller

11. Provide supply and return valves for connection

12. Provide supply and return grooved customer connections

13. Provide piping, pump, and evaporator drain and vents with isolation valves

14. Provide NERMA 3R pump motor starter panel and unit control panel

15. Provide thermal dispersion flow protection device

16. Provide over and under voltage and phase protection relay and indicator light

17. Provide VFD/VSD with the unit

18. 3 -120V and 2 - 208V GFCI power outlet connections and a transformer

19. 8 - 6”x 50ft section discharge and supply hose and fittings

20. 10 – 4/0 X 100ft color cam-lock cables and cam-lock to bare end female cables tails

21. ¾ in thick isolation of evaporator

22. Provide neoprene vibration isolator pads and evap connection to be grooved

23. Provide connection valves and flanges at the chilled water piping in Building 203 and 163

24. Provide filed installation, connection valves and flanges to the lines, testing and connection, reconnection of power and chilled water pipe at Building 163 and 203.

25. Provide moving the flatbed chiller unit to four locations (designated parking space, Building 63, Building 203 and designated parking space)

26. Freight the flatbed unit to VA Temple

27. Provide factory testing data and document such as electrical, cooling, pressure testing and etc.)

28. Warranty shall start after all two locations field testing

29. Warranty shall be one year from complete testing

Duration of this design/build will be 180 calendar days.