Q A.pdf

Information Technology (IT) Server Room Air Conditioner Replacement Hopi Health Care Center (HHCC)

Polacca, AZ Requisition IHS1247960

QUESTIONS AND ANSWERS, December 19, 2014 No. Date Vendor Question Government Response 1 12/9/2014 What is the Serial Number of the existing unit? 993200110598

2 12/11/2014 Is there any low voltage cable work in the server room (computer and telephone cables to desks or specific areas, as well as security cameras and access control cables for building and doors access)?

There is a 24 volt cable feeding the existing thermostat and there are miscellaneous data cables used by IT.

3 12/16/2014 Will HHCC be providing the backup cooling during construction?

One cooling floor unit is available from the government.

More units may need to be provided by the contractor to keep the room at 70° degrees Fahrenheit

4 12/16/2014 Will HHCC provide an open path of 36" (door width) to transport unit through the building into the computer room?

Yes, upon notification.

5 12/16/2014 Will HHCC be responsible for putting the fire system into test during hot work?

Yes, upon notification.

6 12/16/2014 What is the Breaker Mfg., Style, (bolt or screw on) type? See attached picture.

7 12/16/2014 The existing unit is a plenum unit which does not allow for drain pan to be under the unit. It is also a disadvantage to have a unit that is not ducted to cold aisles with in the computer room. The existing unit style (integrated plenum) is ideal for center room applications with server equipment on the outer edges. The current layout of the room will be such that the new unit will have to be installed directly above the

The exiting unit has a drain pan and a drain line.

Contractor may make recommendations in his proposal for the Gov’t to consider. In the future, it is likely that the existing servers will be upgraded to smaller units and may be moved within the room to take full advantage of the cooling capacity of the unit.

existing racks and also creates a greater risk for those who service the A/C equipment. A different location for the unit within the room would be ideal but has not been investigated by Vendor. QUESTION? Would HHCC be open to installing a ducted A/C which will provide for better distribution of the supply and return air, allow for a drain pan under the unit, and provide better access to the unit for service and maintenance?

8 12/16/2014 Is there a valve on the water supply for the disconnect of the humidifier piping?

HHCC will shut the water off as needed. Contractor will be required to install an end cap on the pipe.

9 12/16/2014 Who will be responsible for roofing the penetrations and roof caps where the new refrigerant piping will be routed to the roof?

Contractor is completely responsible for all roof work that is needed for a complete and functional cooling system.

Roof shall be completely sealed to prevent any leaks.

10 12/16/2014 During the site visit it was stated that the evaporator section was on "critical power" and the condenser was on main power. Who would you like to be responsible to move all new equipment to Critical Power? Or will this power condition remain the same?

The contractor may use the existing critical electrical circuit that is currently powering the existing unit and use it to power the new unit (both the evaporator and condenser sides). The existing power is 208V, single phase with a 50 amp fuse.

11 12/16/2014 Will the installing contractor be responsible for ceiling grid removal and re-installation of new?

Contractor is completely responsible for all drop-down ceiling work. Old ceiling tiles shall be reused.

12 12/16/2014 Is there a requirement to provide plans/drawings or shop drawings after work is completed?

No

13 12/16/2014 Will there be any State or Government permits or inspections required for the project?

Contractor should call the Hopi Tribal Office at 928-734- 3000 and the Tribal TERO office at 928-734-3000 for more information. Contractor may need to use some local resources. The Hopi Tribe will have additional and updated information.

14 12/16/2014 During the site visit we were informed that HHCC will provide temporary cooling 70 degrees or less. Is this still correct?

See answer number 3.

15 12/16/2014 According to the Liebert rep, the Liebert Mini Mate EER calculates to 9.39 and the specifications document for the bid requires an EER = 12.2. Will the EER of 9.39 meet HHCC’s requirements?

The minimum requirement is EER-12.2.