Addendum One .pdf
PDF 2 MB Posted
- Solicitation number
- RFB-785-2500000041-3
- Issued by
- Oldham County, Kentucky
About this file
This document is an Addendum to an Invitation to Bid (ITB) issued by the Commonwealth of Kentucky Department for Facilities and Support Services Division of Engineering and Contract Administration for the Kitchen Rooftop HVAC and Boiler project at the Roederer Correctional Complex, Department of Corrections in LaGrange, Kentucky. The project involves the installation of new rooftop HVAC units, boilers, pumps, and terminal units. The Addendum clarifies and modifies the original drawings and specifications, including changes to HVAC schedules, pump schedules, and terminal unit specifications. It also provides responses to contractor questions regarding the ceiling grid, roof warranty, and acceptable alternate boiler manufacturers. Bids are due under ITB No. RFB-40-25.
The ITB includes a $15,000 allowance for fire alarm system devices and recertification. Pricing terms, set-asides, and funding sources are not specified in the Addendum. The original ITB documents would contain those details.
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Other files
| File | Type | Posted |
|---|---|---|
| Final_RFB_785_2500000041_1_SO_FORM.PDF | ||
| Final_RFB_785_2500000041_3_SO_FORM.PDF | ||
| Addendum Two .pdf | ||
| Final_RFB_785_2500000041_2_SO_FORM.PDF |
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Text version
COMMONWEALTH OF KENTUCKY
DEPARTMENT FOR FACILITIES AND SUPPORT SERVICES
DIVISION OF ENGINEERING AND CONTRACT ADMINISTRATION
INVITATION TO BID NO: RFB-40-25
FOR: Kitchen Rooftop HVAC and Boiler Roederer Correctional Complex Department of Corrections LaGrange, Kentucky
DATE: August 14, 2024
RFB-785-2500000041
ADDENDUM NO. One (1)
BIDDER SHALL CONFORM TO THE FOLLOWING CHANGES AS SAME SHALL BECOME BINDING
UPON THE CONTRACT TO BE ISSUED IN RESPONSE TO THIS INVITATION TO BID.
Item 1: Refer to addendum to be distributed by Lynn Imaging for all additions, deletions, and/or changes to specifications and/or drawings.
END OF ADDENDUM
Invitation to Bid No. RFB-40-25 For: Kitchen Rooftop HVAC and Boiler Roederer Correctional Complex Department of Corrections LaGrange, Kentucky
Susan Ward, Statewide Procurement Analyst II Division of Engineering and Contract Administration
DOC – Roederer Correctional Complex
Kitchen Rooftop HVAC and Boiler
527-CB9T-RD19-00
RFB-40-25
Addendum #1 08/13/2024
This addendum amends Drawings and/or Specifications and/or Addenda for the above title project, as indicated below, and is hereby incorporated into the Contract Documents as part thereof.
Bidders are required to acknowledge receipt of this Addendum in the space provided on the Proposal/Bid form.
Clarifications:
1. Special Conditions:
a. Refer to Special Conditions for the Commonwealth of Kentucky Projects – 1000.
Refer to Article 8, Allowances included in the contract amount. Section shall read as: “Provide a $15,000 allowance for fire alarm system devices and fire alarm system recertification”.
2. Contractor Question: Will the entire ceiling grid in the dining room be replaced. Will existing grid be reused?
a. Response: Ceiling grid and tiles in areas impacted by construction shall be removed and replaced with new ceiling and grid to accommodate MEP modifications above ceiling. Paint grid as required to match existing grid. Existing ceiling and grid outside of areas impacted shall remain.
3. Contractor Question: is there a roof warranty?
a. Response: No, there is no known roof warranty at this time.
Addendum #1
4. Contractor Question: Can Patterson-Kelly fire tube boiler equivalent, model Solis be submitted as an acceptable alternative manufacturer for the boiler?
a. Response: A boiler that meets the design specifications, performance, and fits in the physical space allotted will be considered an acceptable alternate. All configuration and piping modifications necessary shall be provided at no additional cost. BCCLT will review all submittals during the construction phase for final equipment acceptance.
5. Contractor Question: Can Raypak fire-tube boiler equivalent, model XVers L H7-856L be submitted as an acceptable alternative manufacturer for the boiler?
a. Response: A boiler that meets the design specifications, performance, and fits in the physical space allotted will be considered an acceptable alternate. All configuration and piping modifications necessary shall be provided at no additional cost. BCCLT will review all submittals during the construction phase for final equipment acceptance.
6. Contractor Question: Is there an existing model number on the air handler?
a. Response: A visible tag is not present on the unit. Existing Unit is a Governair manufactured unit. Original drawings indicate the unit is a Governair TL 20-3526 model unit.
Drawings:
1. M301 – HVAC Schedules:
a. Refer to Schedule of Pumps for revised GPM values.
b. Refer to Schedule of Rooftop Unit. Note 5, delete reference to 36”.
Specification:
1. Section 237423:
a. Refer to Attached section.
End of Addendum #1
Suite 200
Louisville, KY 40222 ph:(502)708-1860
9100 Marksfield Rd fx:(502)633-2222
₂
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07-01-24
B. PROVIDE WITH BACNET MITIGATION FOR FUTURE CONNECTION TO CAMPUS BMS
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PTB
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DJS
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HVAC SCHEDULES
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COPYRIGHT 2016
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ALL RIGHTS RESERVED
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B.C.C.L.T. INC
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DRAWING NO.
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AS BUILT DATE
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COMMONWEALTH OF KENTUCKY
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FINANCE AND ADMINISTRATION CABINET
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DEPARTMENT FOR FACILITIES AND SUPPORT SERVICES
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DIVISION OF ENGINEERING AND CONTRACT ADMINISTRATION
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FRANKFORT, KENTUCKY
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KITCHEN ROOFTOP HVAC AND BOILER
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DRAWING INFORMATION
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DRAWING DATE
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DRAWN BY
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CHECKED BY
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A&E FILE NO.
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DECA LOG #
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527-CB9T-RD19-00
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ACCOUNT NO.
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RTA DATE
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PHASE
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DATE
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DESCRIPTION OF REVISIONS
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REVISION HISTORY OF THIS DRAWING
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DATE
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DESCRIPTION OF REVISIONS
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ROEDERER CORRECTIONAL COMPLEX
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RTA
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SCHEDULE OF PACKAGED ROOFTOP UNIT
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SYMBOL
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MANUF
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MODEL
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HEATING (GPM)
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SA
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ELECTRICAL
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SENSIBLE
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TOTAL
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DAIKIN
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DPSA040
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CEILING
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ROOF
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ROOF
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KITCHEN HOOD
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CUE
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ROOF
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AutoCAD SHX Text NOTES: 1. PROVIDE WITH BACKDRAFT DAMPER AND DISCONNECT. COORDINATE ROOF CURB WITH SLOPE. 2. SHOP DRAWINGS MUST INCLUDE PERFORMANCE DATA OR THEY WILL BE REJECTED.
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SCHEDULE OF BOILER
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SYMBOL
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MODEL
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TYPE
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INPUT MBH
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OUTPUT MBH
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HOT WF GPM
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PRESSURE DROP (FT.)
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ELECTRICAL
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GAS PRESSURE (IN W.C.)
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LOCHINVAR
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CONDENSING
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AutoCAD SHX Text NOTES: 1. PROVIDE UNIT WITH VFD SUPPLY FAN. 2. PROVIDE UNIT WITH WASHABLE FILTER. 3. PROVIDE UNIT WITH DIRECT MODULATING GAS HEATER. 4. PROVIDE MIN. OF 7" WC AND MAX OF 14" WC GAS PRESSURE AT INLET OF UNIT. 5. PROVIDE UNIT WITH 14" HIGH ROOF CURB 6. PROVIDE UNIT WITH NONFUSED DISCONNECT SWITCH.
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GPM
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HEAD (FT)
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HP
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EFF
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BHP
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OUTLET
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BP-1
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SP
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CUE
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CUE
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SCHEDULE OF TERMINAL UNITS
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LAT
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AutoCAD SHX Text NOTES: 1. THE #'S AFTER THE "TU-" CORRESPOND TO THE ROOM NUMBER IN WHICH THE THERMOSTAT IS LOCATED. 2. UNITS SHALL BE PRESSURE INDEPENDENT. 3. SEE PIPING PLANS FOR LEFT OR RIGHT HAND COIL CONNECTIONS. 4. COIL ENTERING HOT WATER TEMPERATURE SHALL BE 180°F, ENTERING AIR TEMPERATURE SHALL BE 55°F. 5. STANDARD ONE ROW COIL UNLESS MENTIONED OTHERWISE. 6. AIR VALVE PRESSURE DROP SHALL NOT EXCEED 0.3". 7. REHEAT COIL WATER PRESSURE DROP SHALL NOT EXCEED 2". 8. PROVIDE 24V CONTROL TRANSFORMER. ONE TRANSFORMER MAY SERVE UP TO FIVE TERMINAL UNITS.
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GUNNAR WAGONER 38176
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ADDENDUM #1
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PACKAGED, OUTDOOR, CENTRAL-STATION AIR-HANDLING UNITS 237413 - 1
SECTION 237413 - PACKAGED, OUTDOOR, CENTRAL-STATION AIR-HANDLING UNITS
PART 1 - GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections, apply to this Section.
1.2 SUMMARY
A. This Section includes packaged, outdoor, central-station air-handling units (rooftop units) with the following components and accessories:
1. Direct-expansion cooling.
2. Economizer outdoor- and return-air damper section.
3. Roof curbs.
1.3 DEFINITIONS
A. DDC: Direct-digital controls.
B. ECM: Electrically commutated motor.
C. Outdoor-Air Refrigerant Coil: Refrigerant coil in the outdoor-air stream to reject heat during cooling operations and to absorb heat during heating operations. "Outdoor air" is defined as the air outside the building or taken from outdoors and not previously circulated through the system.
D. Outdoor-Air Refrigerant-Coil Fan: The outdoor-air refrigerant-coil fan in RTUs. "Outdoor air" is defined as the air outside the building or taken from outdoors and not previously circulated through the system.
E. RTU: Rooftop unit. As used in this Section, this abbreviation means packaged, outdoor, central-station air-handling units. This abbreviation is used regardless of whether the unit is mounted on the roof or on a concrete base on ground.
F. Supply-Air Fan: The fan providing supply air to conditioned space. "Supply air" is defined as the air entering a space from air-conditioning, heating, or ventilating apparatus.
G. Supply-Air Refrigerant Coil: Refrigerant coil in the supply-air stream to absorb heat (provide cooling) during cooling operations and to reject heat (provide heating) during heating operations. "Supply air" is defined as the air entering a space from air-conditioning, heating, or ventilating apparatus.
PACKAGED, OUTDOOR, CENTRAL-STATION AIR-HANDLING UNITS 237413 - 2
1.4 SUBMITTALS
A. Product Data: Include manufacturer's technical data for each RTU, including rated capacities, dimensions, required clearances, characteristics, furnished specialties, and accessories.
B. Shop Drawings: Detail equipment assemblies and indicate dimensions, weights, loads, required clearances, method of field assembly, components, and location and size of each field connection.
1. Wiring Diagrams: Power, signal, and control wiring.
C. Field quality-control test reports.
D. Operation and Maintenance Data: For RTUs to include in emergency, operation, and maintenance manuals.
E. Warranty: Special warranty specified in this Section.
1.5 QUALITY ASSURANCE
A. ARI Compliance:
1. Comply with ARI 210/240 and ARI 340/360 for testing and rating energy efficiencies for
RTUs.
2. Comply with ARI 270 for testing and rating sound performance for RTUs.
B. ASHRAE Compliance:
1. Comply with ASHRAE 15 for refrigeration system safety.
2. Comply with ASHRAE 33 for methods of testing cooling and heating coils.
3. Comply with applicable requirements in ASHRAE 62.1-2004, Section 5 - "Systems and
Equipment" and Section 7 - "Construction and Startup."
C. ASHRAE/IESNA 90.1-2004 Compliance: Applicable requirements in ASHRAE/IESNA 90.1-
2004, Section 6 - "Heating, Ventilating, and Air-Conditioning."
D. NFPA Compliance: Comply with NFPA 90A and NFPA 90B.
E. UL Compliance: Comply with UL 1995.
F. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for intended use.
1.6 WARRANTY
A. Special Warranty: Manufacturer's standard form in which manufacturer agrees to replace components of RTUs that fail in materials or workmanship within specified warranty period.
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1. Warranty Period for Compressors: Manufacturer's standard, but not less than five years from date of Substantial Completion.
2. Warranty Period for Control Boards: Manufacturer's standard, but not less than three years from date of Substantial Completion.
1.7 EXTRA MATERIALS
A. Furnish extra materials described below that match products installed and that are packaged with protective covering for storage and identified with labels describing contents.
1. Filters: One set of filters for each unit.
PART 2 - PRODUCTS
2.1 MANUFACTURERS
A. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:
1. AAON, Inc.
2. Addison Products Company.
3. Carrier Corporation.
4. Daikin
5. Engineered Air.
6. Lennox Industries Inc.
7. McQuay International.
8. Trane; American Standard Companies, Inc.
9. YORK International Corporation.
2.2 CASING
A. General Fabrication Requirements for Casings: Formed and reinforced double-wall insulated panels, fabricated to allow removal for access to internal parts and components, with joints between sections sealed.
B. Exterior Casing Material: Galvanized steel with factory-painted finish, with pitched roof panels and knockouts with grommet seals for electrical and piping connections and lifting lugs.
1. Exterior Casing Thickness: 0.052 inch thick.
C. Inner Casing Fabrication Requirements:
1. Inside Casing: Galvanized steel, 0.034 inch.
D. Casing Insulation and Adhesive: Comply with NFPA 90A or NFPA 90B.
1. Materials: ASTM C 1071, Type I.
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2. Thickness: 1/2 inch.
E. Condensate Drain Pans: Formed sections of stainless-steel sheet, a minimum of 2 inches (50
mm) deep.
1. Drain Connections: Threaded nipple.
2. Pan-Top Surface Coating: Corrosion-resistant compound.
F. Airstream Surfaces: Surfaces in contact with the airstream shall comply with requirements in
ASHRAE 62.1-2004.
2.3 FANS
A. Direct-Driven Supply-Air Fans: Double width, centrifugal; with permanently lubricated, ECM motor resiliently mounted in the fan inlet. Aluminum or painted-steel wheels, and galvanized-or painted-steel fan scrolls.
B. Condenser-Coil Fan: Propeller, mounted on shaft of permanently lubricated motor.
C. Fan Motor: Comply with requirements in Division 23 Section "Common Motor Requirements for HVAC Equipment."
2.4 COILS
A. Supply-Air Refrigerant Coil:
1. Aluminum or Copper-plate fin and seamless copper tube in steel casing with equalizing-type vertical distributor.
2. Polymer strip shall prevent all copper coil from contacting steel coil frame or condensate pan.
3. Coil Split: Interlaced.
4. Condensate Drain Pan: Stainless steel formed with pitch and drain connections.
B. Outdoor-Air Refrigerant Coil:
1. Aluminum or Copper-plate fin and seamless copper tube in steel casing with equalizing-type vertical distributor.
2. Polymer strip shall prevent all copper coil from contacting steel coil frame or condensate pan.
2.5 REFRIGERANT CIRCUIT COMPONENTS
A. Number of Refrigerant Circuits: Two
B. Compressor: Hermetic, scroll, mounted on vibration isolators; with internal overcurrent and high-temperature protection, internal pressure relief, and crankcase heater.
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C. Refrigeration Specialties:
1. Expansion valve with replaceable thermostatic element.
2. Refrigerant filter/dryer.
3. Manual-reset high-pressure safety switch.
4. Automatic-reset low-pressure safety switch.
5. Minimum off-time relay.
6. Automatic-reset compressor motor thermal overload.
7. Brass service valves installed in compressor suction and liquid lines.
2.6 AIR FILTRATION
A. Minimum arrestance according to ASHRAE 52.1, and a minimum efficiency reporting value
(MERV) according to ASHRAE 52.2.
1. Pleated: Minimum 90 percent arrestance, and MERV 8.
2.7 DAMPERS
A. Outdoor- and Return-Air Mixing Dampers: Parallel- or opposed-blade galvanized-steel dampers mechanically fastened to cadmium plated for galvanized-steel operating rod in reinforced cabinet. Connect operating rods with common linkage and interconnect linkages so dampers operate simultaneously.
1. Damper Motor: Modulating with adjustable minimum position.
2. Relief-Air Damper: Gravity actuated or motorized, as required by ASHRAE/IESNA
90.1-2004, with bird screen and hood.
2.8 ELECTRICAL POWER CONNECTION
A. Provide for single connection of power to unit with unit-mounted disconnect switch accessible from outside unit and control-circuit transformer with built-in overcurrent protection.
2.9 ACCESSORIES
A. Filter differential pressure switch with sensor tubing on either side of filter. Set for final filter pressure loss.
B. Hail guards of galvanized steel, painted to match casing.
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PART 3 - EXECUTION
3.1 EXAMINATION
A. Examine substrates, areas, and conditions, with Installer present, for compliance with requirements for installation tolerances and other conditions affecting performance of RTUs.
B. Examine roughing-in for RTUs to verify actual locations of piping and duct connections before equipment installation.
C. Examine roofs for suitable conditions where RTUs will be installed.
D. Proceed with installation only after unsatisfactory conditions have been corrected.
3.2 INSTALLATION
A. Roof Curb: Install on roof structure or concrete base, level and secure, according to
ARI Guideline B. Install RTUs on curbs and coordinate roof penetrations and flashing with roof construction specified in Division 07 Section "Roof Accessories." Secure RTUs to upper curb rail, and secure curb base to roof framing or concrete base with anchor bolts.
3.3 CONNECTIONS
A. Install condensate drain, minimum connection size, with trap and indirect connection to nearest roof drain or area drain.
B. Install piping adjacent to RTUs to allow service and maintenance.
C. Duct installation requirements are specified in other Division 23 Sections. Drawings indicate the general arrangement of ducts. The following are specific connection requirements:
1. Install ducts to termination at top of roof curb.
2. Connect supply ducts to RTUs with flexible duct connectors specified in Division 23
Section "Air Duct Accessories."
3.4 FIELD QUALITY CONTROL
A. Manufacturer's Field Service: Engage a factory-authorized service representative to inspect, test, and adjust components, assemblies, and equipment installations, including connections.
Report results in writing.
B. Perform tests and inspections and prepare test reports.
1. Manufacturer's Field Service: Engage a factory-authorized service representative to inspect components, assemblies, and equipment installations, including connections, and to assist in testing. Report results in writing.
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C. Tests and Inspections:
1. After installing RTUs and after electrical circuitry has been energized, test units for compliance with requirements.
2. Inspect for and remove shipping bolts, blocks, and tie-down straps.
3. Operational Test: After electrical circuitry has been energized, start units to confirm proper motor rotation and unit operation.
4. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and equipment.
D. Remove and replace malfunctioning units and retest as specified above.
3.5 STARTUP SERVICE
A. Engage a factory-authorized service representative to perform startup service.
B. Complete installation and startup checks according to manufacturer's written instructions and do the following:
1. Inspect for visible damage to unit casing.
2. Inspect for visible damage to furnace combustion chamber.
3. Inspect for visible damage to compressor, coils, and fans.
4. Inspect internal insulation.
5. Verify that labels are clearly visible.
6. Verify that clearances have been provided for servicing.
7. Verify that controls are connected and operable.
8. Verify that filters are installed.
9. Clean condenser coil and inspect for construction debris.
10. Remove packing from vibration isolators.
11. Verify lubrication on fan and motor bearings.
12. Inspect fan-wheel rotation for movement in correct direction without vibration and binding.
13. Adjust fan belts to proper alignment and tension.
14. Start unit according to manufacturer's written instructions.
a. Start refrigeration system.
b. Do not operate below recommended low-ambient temperature.
c. Complete startup sheets and attach copy with Contractor's startup report.
15. Inspect and record performance of interlocks and protective devices; verify sequences.
16. Operate unit for an initial period as recommended or required by manufacturer.
17. Adjust and inspect high-temperature limits.
18. Inspect outdoor-air dampers for proper stroke and interlock with return-air dampers.
19. Start refrigeration system and measure and record the following when ambient is a minimum of 15 deg F (8 deg C) above return-air temperature:
a. Coil leaving-air, dry- and wet-bulb temperatures.
b. Coil entering-air, dry- and wet-bulb temperatures.
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c. Outdoor-air, dry-bulb temperature.
d. Outdoor-air-coil, discharge-air, dry-bulb temperature.
20. Inspect controls for correct sequencing of heating, mixing dampers, refrigeration, and normal and emergency shutdown.
21. Measure and record the following minimum and maximum airflows. Plot fan volumes on fan curve.
a. Supply-air volume.
b. Return-air volume.
c. Relief-air volume.
d. Outdoor-air intake volume.
22. After startup and performance testing and prior to Substantial Completion, replace existing filters with new filters.
3.6 DEMONSTRATION
A. Engage a factory-authorized service representative to train Owner's maintenance personnel to adjust, operate, and maintain RTUs. Refer to Division 01 Section "Demonstration and
Training."
END OF SECTION 237413
| Addendum One |
| Addendum 1 (1) |
File details come from the government source that posted it. Updated .