Addendum Two .pdf

COMMONWEALTH OF KENTUCKY

DEPARTMENT FOR FACILITIES AND SUPPORT SERVICES

DIVISION OF ENGINEERING AND CONTRACT ADMINISTRATION

INVITATION TO BID NO: RFB-202-25

FOR: Re-Ad of RFB-38-25 Nursing Facility Renovations Western State Hospital Cabinet for Health and Family Services Hopkinsville, Kentucky

DATE: April 7, 2025

RFB-785-2500000553

ADDENDUM NO. Two (2)

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-202-25 For: Re-Ad of RFB-38-25 Nursing Facility Renovations Western State Hospital Cabinet for Health and Family Services Hopkinsville, Kentucky

Susan Ward, Statewide Procurement Analyst II Division of Engineering and Contract Administration

NURSING FACILITY RENOVATIONS

WESTERN STATE HOSPITAL

HOPKINSVILLE, KENTUCKY

ACCOUNT NO. 729-CAKQ-WN05-00

MARCUM NO. 23583

ADDENDUM 2.00

APRIL 4, 2024

The following Addendum Items shall be made part of the Contract Documents for the referenced project.

2.01 Refer to Section 10000, Item 3 – Project Contacts. The Contractor is encouraged to visit the site prior to bidding. To schedule a site visit, contact Joe

Gunn, Facilities Maintenance Director, (270) 889-2683 or joew.gunn@ky.gov.

2.02 Refer to Section 10000, Item 4 – Project Phasing. The Contractor shall have access to Buildings 30 and 31 simultaneously. The Owner will NOT have patients in these Buildings during construction activities. Construction duration in

Recreation Room 100 should be limited to minimize disruption to Owner operations. If Alternate 1 is accepted, the Owner will move out of Building 32 upon completion of Buildings 30 and 31 to allow construction activities.

2.03 Refer to Section 10000, Item 4 – Project Phasing and Section 230800. The

Contractor shall include five (5) days to the project schedule to coordinate activities with the Commissioning Authority.

2.04 Refer to Section 230900.1.2.C. The Controls System for the Nursing Facility is open bid per the Manufacturer’s listed in 230900.2.3.A. The Control System installer for the Nursing Facility will need to coordinate work as indicated in the

Allowance (Section 10000.8) for the Controls System to be integrated into the existing Andover front end system by Comfort Systems USA. This integration is necessary to allow for chilled water commands and to allow the Owner a single front end to see system alarms.

2.05 Refer to attached Section 235216 – Condensing Boilers. Add this Section to the

Contract Documents.

2.06 Refer to Section 235216 and Drawing H0.1. – Condensing Boiler Schedule.

Update manufacturer’s list to include Laars. Final approval shall be reserved for

Shop Drawing Review stage.

2.07 Refer to Drawing H1.1. All exposed ductwork in Recreation Room 100 shall be internally lined with 1” antimicrobial duct liner. Ductwork shall be paint grip and shall be painted to match existing wall color. Increase duct dimensions 2” horizontally and vertically to maintain duct free area. This included supply and outside air duct exposed in Recreation Room 100. The Contractor shall have the option to install 18” diameter dual wall, paint grip duct with 1” thick insulation for supply air from the (4) units tagged FC-N.

2.08 Refer to Drawing H4.1 – Horizontal MPE Chase and Vertical MPE Chase details.

Stainless steel fasteners to attach chases and trim to wall are NOT required.

Fasteners shall be galvanized steel.

2.09 Refer to Drawing H4.1 - Horizontal MPE Chase and Vertical MPE Chase details.

Extruded aluminum angles are NOT required. Contractor shall have the option to install galvanized steel angles for trim. All exposed metal for MPE Chases shall be painted to match existing wall. Contractor shall the option to field paint chases.

2.10 Refer to Drawing H5.1 – Diffuser and Grille Schedule. Diffusers tagged S-2 and

S-3 shall be furnished in primer finish for field painting. All other Diffusers and

Grilles shall be furnished in “White” color.

2.11 Refer to Drawing H5.1 – Packaged Dedicated Ventilation-Air Unit with Natural

Gas Heat Schedule. The maximum temperature rise required for the heating section shall be 80°F. The discharge air temperature shall be set through the

Building Management System. Refer to Section 230993 for details.

2.12 Refer to Drawing H5.1 – Packaged Dedicated Ventilation Air Unit with Natural

Gas Heat Schedule, Note 32. Omit reference to exhaust airstream mounted air-flow measuring station. System is outside air only.

Attachments:

1. Section 235216

END OF ADDENDUM 2.00

CONDENSING BOILERS 235216 - 1

SECTION 235216 - CONDENSING BOILERS

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes packaged, factory-fabricated and -assembled, gas-fired, fire-tube condensing boilers, trim, and accessories for generating hot water.

1.2 SUBMITTALS

A. Product Data: Include performance data, operating characteristics, furnished specialties, and accessories.

B. Shop Drawings: For boilers, boiler trim, and accessories. Include plans, elevations, sections, details, and attachments to other work.

C. Source quality-control test reports.

D. Field quality-control test reports.

E. Operation and maintenance data.

F. Warranty: Special warranty specified in this Section.

1.3 QUALITY ASSURANCE

A. 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.

B. ASME Compliance: Fabricate and label boilers to comply with ASME Boiler and Pressure Vessel Code.

C. ASHRAE/IESNA 90.1 Compliance: Boilers shall have minimum efficiency according to "Gas and Oil Fired Boilers - Minimum Efficiency Requirements."

D. UL Compliance: Test boilers for compliance with UL 795, "Commercial-Industrial Gas Heating Equipment." Boilers shall be listed and labeled by a testing agency acceptable to authorities having jurisdiction.

1.4 WARRANTY

A. Special Warranty: Manufacturer's standard form in which manufacturer agrees to repair or replace components of boilers that fail in materials or workmanship within specified warranty period.

CONDENSING BOILERS 235216 - 2

1. Warranty Period for Fire-Tube Condensing Boilers:

a. Leakage and Materials: 10 years from date of Substantial Completion.

b. Heat Exchanger Damaged by Thermal Stress and Corrosion: Non-prorated for five years from date of Substantial Completion.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. In other Part 2 articles where titles below introduce lists, the following requirements to product selection:

1. Manufacturers: Subject to compliance with requirements, provide products by one of the manufacturers specified.

2.2 MANUFACTURED UNITS – FIRE-TUBE

A. Description: Factory-fabricated, -assembled, and -tested, fire-tube condensing boiler with heat exchanger sealed pressure tight, built on a steel base; including insulated jacket; flue-gas vent; combustion-air intake connections; water supply, return, and condensate drain connections; and controls. Water heating service only.

1. Aerco

2. Fulton

3. Laars

4. Lochinvar.

5. RBI.

6. Approved equal.

B. Heat Exchanger: Nonferrous, corrosion-resistant combustion chamber.

C. Pressure Vessel: Carbon steel with welded heads and tube connections.

D. Burner: Natural gas, forced draft.

E. Blower: Centrifugal fan to operate during each burner firing sequence and to pre-purge and post-purge the combustion chamber.

1. Motors.

a. Motor Sizes: Minimum size as indicated. If not indicated, large enough so driven load will not require motor to operate in service factor range above 1.0.

F. Gas Train: Combination gas valve with manual shutoff and pressure regulator.

G. Ignition: Spark ignition with 100 percent main-valve shutoff with electronic flame supervision.

CONDENSING BOILERS 235216 - 3

H. Casing:

1. Jacket: Sheet metal, with snap-in or interlocking closures.

2. Control Compartment Enclosures: NEMA 250, Type 1A.

3. Finish: Baked-enamel protective finish.

4. Insulation: Minimum 2-inch- thick, mineral-fiber insulation surrounding the heat exchanger.

5. Combustion-Air Connections: Inlet and vent duct collars.

6. Mounting base to secure boiler.

a. Seismic Fabrication Requirements: Fabricate mounting base and attachment to boiler pressure vessel, accessories, and components with reinforcement strong enough to withstand seismic forces.

I. Characteristics and Capacities as specified in drawings.

2.3 TRIM

A. Include devices sized to comply with ANSI B31.9, "Building Services Piping."

B. Aquastat Controllers: Operating, firing rate, and high limit.

C. Safety Relief Valve: ASME rated.

D. Pressure and Temperature Gage: Minimum 3-1/2-inch- diameter, combination water-pressure and -temperature gage. Gages shall have operating-pressure and -temperature ranges so normal operating range is about 50 percent of full range.

E. Boiler Air Vent: Automatic.

F. Drain Valve: Minimum NPS 3/4 hose-end gate valve.

2.4 CONTROLS

A. Boiler operating controls shall include the following devices and features:

1. Control transformer.

2. Set-Point Adjust: Set points shall be adjustable.

3. Sequence of Operation: Electric, factory-fabricated and field-installed panel to control burner firing rate to maintain space temperature in response to thermostat with heat anticipator located in heated space.

4. Sequence of Operation: Electric, factory-fabricated and field-installed panel to control burner firing rate to reset supply-water temperature inversely with outside-air temperature. Refer to Section 230993 for details.

a. Include automatic, alternating-firing sequence for multiple boilers to ensure maximum system efficiency throughout the load range and to provide equal runtime for boilers.

CONDENSING BOILERS 235216 - 4

B. Burner Operating Controls: To maintain safe operating conditions, burner safety controls limit burner operation.

1. High Cutoff: Manual reset stops burner if operating conditions rise above maximum boiler design temperature.

2. Low-Water Cutoff Switch: Electronic probe shall prevent burner operation on low water. Cutoff switch shall be automatic-reset type.

3. Blocked Inlet Safety Switch: Manual-reset pressure switch field mounted on boiler combustion-air inlet.

4. Audible Alarm: Factory mounted on control panel with silence switch; shall sound alarm for above conditions.

C. Building Automation System Interface: Factory install hardware and software to enable building automation system to monitor, control, and display boiler status and alarms.

1. Hardwired Points:

a. Monitoring: On/off status, common trouble alarm.

b. Control: On/off operation, hot water supply temperature set-point adjustment.

2. A communication interface with building automation system shall enable building automation system operator to remotely control and monitor the boiler. Control features available, and monitoring points displayed, locally at boiler control panel shall be available through building automation system.

2.5 ELECTRICAL POWER

A. Single-Point Field Power Connection: Factory-installed and -wired switches, motor controllers, transformers, and other electrical devices necessary shall provide a single-point field power connection to boiler.

1. House in NEMA 250, Type 1 enclosure.

2. Wiring shall be numbered and color-coded to match wiring diagram.

3. Install factory wiring outside of an enclosure in a metal raceway.

4. Field power interface shall be to non-fused disconnect switch.

5. Provide branch power circuit to each motor and to controls with a disconnect switch

6. Provide each motor with overcurrent protection.

2.6 VENTING KITS

A. Kit: Complete system, materials per Manufacturer’s requirements.

B. Combustion-Air Intake: Complete system, materials per Manufacturer's requirements.

CONDENSING BOILERS 235216 - 5

2.7 SOURCE QUALITY CONTROL

A. Burner and Hydrostatic Test: Factory adjust burner to eliminate excess oxygen, carbon dioxide, oxides of nitrogen emissions, and carbon monoxide in flue gas and to achieve combustion efficiency; perform hydrostatic test.

B. Test and inspect factory-assembled boilers, before shipping, according to ASME Boiler and Pressure Vessel Code.

PART 3 - EXECUTION

3.1 BOILER INSTALLATION

A. Install boilers level on concrete base.

B. Vibration Isolation: Elastomeric isolation pads with a minimum static deflection of 0.25 inch.

C. Install gas-fired boilers according to NFPA 54.

D. Assemble and install boiler trim.

E. Install electrical devices furnished with boiler but not specified to be factory mounted.

F. Install control wiring to field-mounted electrical devices.

3.2 CONNECTIONS

A. Drawings indicate general arrangement of piping, fittings, and specialties.

B. Install piping adjacent to boiler to allow service and maintenance.

C. Install piping from equipment drain connection to nearest floor drain. Piping shall be at least full size of connection. Provide an isolation valve if required.

D. Connect piping to boilers, except safety relief valve connections, with flexible connectors of materials suitable for service.

E. Connect gas piping to boiler gas-train inlet with union. Piping shall be at least full size of gas train connection. Provide a reducer if required.

F. Connect hot-water piping to supply- and return-boiler tappings with shutoff valve and union or flange at each connection.

G. Install piping from safety relief valves to nearest floor drain.

H. Boiler Venting:

1. Install flue venting kit and combustion-air intake.

CONDENSING BOILERS 235216 - 6

2. Connect full size to boiler connections.

3.3 FIELD QUALITY CONTROL

A. 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.

B. Tests and Inspections:

1. Perform installation and startup checks according to manufacturer's written instructions.

2. Leak Test: Hydrostatic test. Repair leaks and retest until no leaks exist.

3. Operational Test: Start units to confirm proper motor rotation and unit operation.

Adjust air-fuel ratio and combustion.

4. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and equipment.

a. Check and adjust initial operating set points and high- and low-limit safety set points of fuel supply, water level, and water temperature.

b. Set field-adjustable switches and circuit-breaker trip ranges as indicated.

C. Remove and replace malfunctioning units and retest as specified above.

D. Occupancy Adjustments: When requested within 12 months of date of Substantial Completion, provide on-site assistance in adjusting system to suit actual occupied conditions.

3.4 DEMONSTRATION

A. Engage a factory-authorized service representative to train Owner's maintenance personnel to adjust, operate, and maintain boilers.

END OF SECTION 235216