Addendum No 2.pdf

COMMONWEALTH OF KENTUCKY

DEPARTMENT FOR FACILITIES AND SUPPORT SERVICES

DIVISION OF ENGINEERING AND CONTRACT ADMINISTRATION

INVITATION TO BID NO: RFB-38-25

FOR: Nursing Facility Renovations Western State Hospital Cabinet for Health & Family Services Hopkinsville, Kentucky

DATE: August 26, 2024

RFB-785-2500000040

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 Official Bid Opening; Change to September 12, 2024 at 1:30 PM ET.

Item 2: Refer to attached pages for changes and/or deletions and/or additions to specifications and/or drawings.

END OF ADDENDUM

Invitation to Bid No. RFB-38-25 For: Nursing Facility Renovations Western State Hospital Cabinet for Health & Family Services Hopkinsville, Kentucky

Kristi Sharp, Statewide Procurement Manager Division of Engineering and Contract Administration

NURSING FACILITY RENOVATION

WESTERN STATE HOSPITAL

HOPKINSVILLE, KENTUCKY

MARCUM NO. 23853

ADDENDUM 2.00

AUGUST 22, 2024

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

2.01 Refer to Section 10000 Special Conditions, Section 4. The Time for Completion shall be revised from 320 Calendar Days to 540 Calendar Days to reach substantial completion. Final completion shall remain 30 days beyond substantial completion.

2.02 Refer to Section 10000 Special Conditions, Section 4. The Contractor shall include twenty-one (21) calendar days in the schedule between phases to allow the Owner to move equipment, patients, staff, etc. These calendar days shall not count towards the total calendar days for substantial completion.

2.03 Refer to Section 10000 Special Conditions, Section 4. The Contractor shall have the option to work four (4) ten hour days in lieu of five (5) eight hour days.

2.04 Refer to Section 10000 Special Conditions, Section 4. For phasing of the project, the existing dual temperature pumps (P-4 and P-5) in the chiller plant shall remain dual temperature until the final phase of work to maintain heating and cooling within the remaining portions of the Nursing Facility. During Phase 2 and portions of Phase 3, the new chilled water coils will be operated as dual temperature coils. By substantial completion, the chilled water coils shall be operating as chilled water coils only in all portions of the nursing facility.

2.05 Refer to Section 10000 Special Conditions, Section 12. The Contractor shall follow the Covid Guidelines of the facility which are subject to change during the duration of the project. The Facility will provide any PPE required for Covid guidelines (facemasks, gloves, etc.) Covid Testing, if required, will be administered by the facility at no cost to the Contractor. Covid vaccines are not required to work at this facility.

2.06 Refer to Section 10000 Special Conditions, Section 12. The Contractor shall follow the Facilities Hot Work Permit Requirements. Refer to the attached Hot

Work Permit.

2.07 Refer to Section 10000 Special Conditions. Background checks for Contractors will NOT be required for this project.

2.08 Refer to Section 10000 Special Conditions. The Owner will move furniture in areas under renovation. Much of the furniture cannot be moved out completely of the area as storage space is not available. The Contractor shall cover with plastic and protect furniture, beds, etc. that are left in place.

2.09 Refer to Section 10000 Special Conditions. During HVAC system outages lasting longer than twelve hours (12) the Contractor shall furnish temporary cooling to the patient occupied areas of the building. The Contractor shall provide a temporary cooling unit and outdoor rated flexible ductwork to be stubbed into the main hallway for the first and second floors to free blow into the space in a temporary condition. Provide required generator or other temporary power for unit(s) for the full duration of the outage. Temporary heat would be provided by the Owner.

2.10 Refer to Section 10000 Special Conditions. All utility outages (water, HVAC, Electrical, etc.) shall be coordinated with the Owner and Engineer and approved in writing seven (7) days prior to the outage. Outage durations shall be kept to a minimum. Any outage exceeding twelve hours shall be split into multiple outages.

2.11 Refer to Section 10000 Special Conditions. If suspected hazardous materials are encountered, the Contractor shall stop work in that area and notify the

Engineer. Any hazardous materials testing and abatement shall be contracted directly with the Owner and outside of the Contractor’s scope of work.

2.12 Refer to Sections 230600 and 230800. Testing, Adjusting, and Balancing

Contractor and the Commissioning Agent shall be directly contracted and paid by the Commonwealth of Kentucky. The Contractor shall be given the contact information for each, and shall be responsible for coordinating with the TAB

Contractor and Commissioning Agent for schedule and work scope as outlined in the Special Conditions and referenced specifications.

2.13 Refer to Section 230700.3.12 and Drawing H0.1 – HVAC Pipe Insulation

Schedule. Omit the HVAC Pipe Insulation Schedule from Drawing H0.1 and follow the requirements in Section 230700.3.12 for piping insulation requirements.

2.14 Refer to Section 230900. Update the Manufacturers List to include “Alerton”.

Final approval will be reserved for the Shop Drawing review stage.

2.15 Refer to Section 230900. Update the Manufacturers List to include “Distech”.

Final approval will be reserved for the Shop Drawing review stage.

2.16 Refer to Section 230900. Update the Manufacturers List to include “Johnson

Controls”. Final approval will be reserved for the Shop Drawing review stage.

2.17 Refer to Section 230900. The Temperature Controls Contractor shall be responsible for the Low Voltage Electrical permit and associated fees for their scope of work. They shall be responsible for coordinating electrical inspections with the Authority Having Jurisdiction.

2.18 Refer to Section 230900. The Temperature Controls Contractor shall furnish and install (1) 2” conduit and cabling from the Nursing Facility to the existing boiler plant for interconnection to the existing Andover Continuum system.

2.19 Refer to Section 230993. Omit the Section in its entirety and replace with the attached Section 230993 dated 08-23-2024.

2.20 Refer to Section 232113 Hydronic Piping. Use of press-joint copper fittings and joints is NOT acceptable for this project.

2.21 Refer to Drawing A6.1 – Sloped Ceiling Section. This Section and ceiling design shall apply to ALL spaces with suspended ceilings and horizontal suspended fan coil units.

2.22 Refer to Drawings A6.1, A6.2, A6.3, and A6.4. The plaster ceiling above the suspended ceiling is not required to be repaired after removal of MPE items above. The new and existing suspended ceilings shall be fire rated.

2.23 Refer to Drawings DH1.1, DH1.2, DH1.3, and DH1.4. Where fan coil units are removed the Contractor shall patch any anchor bolt holes in the wall and paint the one wall that the unit was attached to. Paint color shall match existing. The floor shall be patched for any anchor bolt holes only.

2.24 Refer to Drawing DH1.4. The Contractor shall field verify the existing windows being modified in Storage 315 for removal of exhaust fans and replacement of missing window panes.

2.25 Refer to Drawing H1.1. All exposed ductwork in Recreation Room 100 shall be dual wall, paint grip. Insulation shall be at minimum 1” thick. Color to shall be selected by Architect.

2.26 Refer to Drawing H1.4. Contractor shall remove and replace ceiling tile and grid as required for installation of ductwork, equipment, piping, etc. where ceilings are not noted on the Architectural drawings to be removed and replaced. Ceilings shall be protected for reinstallation.

2.27 Refer to H1.5. Piping for Hot Water Pumps (P-1A and P-1B) and hot water piping to Buildings 31 and 33 shall be completed in Phase 1 and Phase 2 as required to make the system operational.

2.28 Refer to Drawing H2.1. Comfort Systems USA will furnish the Motorized Control Valves for Mechanical Contractor installation.

2.29 Refer to Drawing H4.2 – Structural Support Details. The detail on the left shall be for all through floor penetrations. Contractor shall field verify for final dimensions, but 12” deep steel joists are generally 24” on center per the original construction drawings.

2.30 Refer to Drawing H4.2 – Structural Support Details. The detail on the right shall be for all through roof penetrations. Contractor shall field verify for final dimensions, but 12” deep wide flange beams are generally 4’-2” to 4’-6” on center.

2.31 Refer to Drawing H5.1 – Diffuser and Grille Schedule. ALL diffusers and grilles tagged S-1, R-1, and E-1 shall be furnished with ceiling radiation, butterfly-type damper with fusible links; thermal blanket; and steel construction.

2.32 Refer to Drawing H5.1 – Diffuser and Grille Schedule. Add the following diffusers: Tag-S-2, Price Model 520 (or equal), 12”x6”, 235 CFM, 19’ throw,

0.052 in w.g PD, NC <18f, with integral volume damper, paint to match ductwork;

Tag-S-3, Price Model 520 (or equal), 22”x8”, 535 CFM, 28’ throw; 0.38 in w.g.

PD, NC <18, with integral volume damper.

2.33 Refer to Drawing ME1.1. The existing roof does not have an existing warranty.

The roofing material is Modified Bitumen.

SEQUENCE OF OPERATIONS FOR HVAC CONTROLS (REVISED

08-23-2024)

230993 - 1

SECTION 230993 – SEQUENCE OF OPERATIONS FOR HVAC CONTROLS (REVISED 08-23-2024)

(CHANGES IN BOLD)

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes control sequences for HVAC systems, subsystems, and equipment.

B. See "Instrumentation and Control for HVAC" for control equipment and devices and for submittal requirements.

1.2 CONTROLS ALLOWANCE

A. The existing Andover Continuum System shall remain for the boiler plant, chiller plant, and main hospital.

B. Comfort Systems USA will integrate the new control system into the existing control system.

They will provide a Fan Coil Unit (FCU) Summary Graphic for the Nursing Facility on the existing system that will include FCU Location; FCU Alarm Status; FCU Space Temperature.

The Temperature Controls Contractor shall provide these BACnet points for this graphic to Comfort Systems for integration.

C. Comfort Systems USA will provide the motorized control valves indicated on Drawing H2.1.

D. Comfort Systems USA will receive heating/cooling commands from the Nursing Facility and operate the control valves in the Chiller Plant, Chiller equipment, and Heating Equipment as required to provide hot and/or chilled water to the Nursing Facility.

1.3 EQUIPMENT ALARM PAGE

A. Provide an equipment alarm page for all equipment and items on the Building Management System. This shall be a single page that shall list all units, equipment, etc. in table format that the Owner can visually review all equipment at one time to quickly determine if there are any alarms within the system.

B. Operator Interface: Display the following data:

1. Alarm graphic for each unit (may be in table format with radio buttons)

2. Include equipment tag and room number served (room numbers shall correlate with actual room numbers not numbers on the drawings).

3. Remote reset for each unit

1.4 WEB ACCESSIBLE TEMPERATURE CONTROL SCREEN

A. Provide a web accessible (and mobile device interfaceable) HVAC zone temperature control screen for the entire building. This shall be a single screen that shows the entire floor plan, shows all temperature-controlled zones (boundaries), shows sensor location for each zone, indicates equipment dedicated for each zone, and displays the space temperature with the color

230993 - 2 coding described below. This shall be indicated on an accurate, to-scale floor plan that several Owner representatives (with low tier password) can easily understand space temperatures, alarms, and change temperature settings. With a higher tier password, this screen can lead to additional screens for equipment, sensors, systems, etc. This screen is intended to be an easy to use page for novices.

B. On this page, zones shall be colored red if space temperature is 3 deg F or more above setpoint, blue if 3 deg F or more below setpoint, and not colored if within the setpoint deadband.

C. Operator Interface: Display the following data:

1. To-scale, building floor plan with equipment tags and room numbers (room numbers shall correlate with actual room numbers not numbers on the drawings) and other information indicated above.

2. Color code interpretation of space temperature relative to setpoint.

3. Space set-points.

4. Alarms.

1.5 HYDRONIC PUMP AND VARIABLE SPEED PUMPING CONTROL SEQUENCES

A. Pumps shall be operated as constant volume operation. Pumps shall have VFD’s for system balancing.

B. During Phase 1 and 2 the existing chilled water pumps P-4 and P-5 shall remain on the existing control system. By substantial completion, when the Nursing Facility no longer requires the pumps to function as dual temperature, pumps P-4 and P-5 shall be converted to the new control system to operate as chilled water only pumps.

C. Pumps shall be started, through their on-off-auto selector switches, by the BAS. In auto position, the BAS shall modulate the pump’s variable frequency drive (VFD) to maintain the adjustable differential pressure sensor’s settings.

1. Two (2) differential pressure sensors shall be located on the supply and return lines as indicated on HVAC Piping Drawings (for both chilled water and hot water systems).

2. The BAS system shall continuously monitor the sensors and control pump speed to maintain the minimum system pressure. Note, the sensor shall have pressure set points that can be adjusted for “tuning” of the building’s system. Each system shall have adjustable set-points.

D. Occupied Operation – Pumps shall operate continuously on a call for heating or cooling and shall modulate fluid flow based on differential pressure readings from various system monitoring points. Pumps shall operate in lead/lag configuration based on equipment run times. System shall always operate in the occupied mode.

E. Unoccupied Operation – Pumps shall not operate unless called for by another system’s manual override.

F. Operator Interface: Display the following data:

1. Operating command of pump(s) (lead/lag).

2. Each differential pressure setpoint, 20 psi (adjustable)

3. Each differential pressure setpoint indication

4. Status of pump(s). Current transmitter(s) are required. Include:

a. Flow rate (GPM) calculated not measured.

230993 - 3

b. Pump Speed (RPM).

c. VFD output frequency (Hz.)

5. Alarm for pump failure and/or differential pressure transmitter failure.

6. Provide Lead/lag control and automatic duty switching for pump run times.

1.6 CHILLED WATER SYSTEM CONTROL SEQUENCES

A. General:

1. Chilled water system provides variable water flow and constant pressure constant flow.

2. The Chiller controls shall be on the existing Andover Continuum system. Provide

BACnet control points for needed chilled water operation.

3. Activate start up sequence upon operator input or when fan coil unit(s) calls for cooling.

4. Activate shut down sequence upon operator input or when fan coil unit(s) are off.

B. Start Up:

1. Upon start command:

a. Chilled water pump control sequence activates.

b. Chiller water loop control sequence activates.

c. Chiller operation control sequence activates.

d. Pump rotation sequence activates.

e. Lead pump starts and is proven.

f. Chiller sequence activates.

C. Shut Down:

1. Upon shut down command:

a. Chiller stops.

b. Pump stops.

c. All other sequences disable.

d. Suppress nuisance alarms.

D. Chilled Water Pump Control:

1. Pumps shall be started, through their on-off-auto selector switches, by the BAS.

2. Pumps shall operate continuously on a call for cooling.

3. Pumps shall operate in a Lead/Lag routine.

E. Chilled Water Loop Control

1. Anytime the system is activated, the lead chilled water pump shall run.

2. A sensor in the loop supply water shall alarm if chilled water supply temperature exceeds

50°F (adj.).

3. Chilled water modulating control valve shall modulate at end of piping run to maintain minimum flow.

F. Operator Interface: Display the following data:

1. System graphic for equipment and all points:

2. Hardware and software points:

230993 - 4

a. Chilled water pump command (on/off)

b. Chilled water pump status (on/off)

c. Chilled water pump speed command (Hz)

d. Chilled water pump alarm (normal/alarm)

e. Chilled water pump VFD alarm (normal/alarm)

f. Chilled water supply temp setpoint (°F)

g. Chilled water return temp indication (°F)

h. Chiller command (on/off)

i. Chiller status (on/off)

j. Chiller alarm (normal/alarm)

k. Chiller water supply temp indication (°F)

l. Local outside air temperature (°F)

m. Local outside air humidity (%RH)

n. Chilled water supply temp alarm (°F)

o. Chilled water return temp alarm (°F)

p. Alarms for failures.

1.7 FAN COIL UNIT CONTROL SEQUENCES

A. General:

1. Provide a combination temperature and humidity sensor. A modulating 3–way heating control valve and a modulating 3–way cooling control valve shall be provided by Temperature Controls Contractor.

2. System operation:

a. Unit shall cycle on and off automatically in response to space temperature.

b. Start up sequence activates any time space temperature varies from set-point for 3 minute (adj.) or longer by more than the allowed deadband.

c. Shut down sequence activates any time the space temperature has been maintained for 3 minute (adj.) or longer.

B. Start Up:

1. Upon start up command:

a. Supply fan starts and is proven.

b. Temperature control sequence activates.

C. Shut Down:

1. Upon shut down command:

a. Supply fan stops.

b. Temperature control sequence deactivates and valves close.

D. Temperature Control Sequence:

1. Cooling coil control valve and heating coil control valve shall modulate to maintain space temperature. Heating and cooling valves shall not operate at the same time unless in dehumidification mode.

2. Dehumidification mode shall activate if space temperature setpoint is satisfied, but the space relative humidity is above setpoint. In the dehumidification mode, the cooling valve shall open fully for full cooling. The heating coil valve shall modulate to maintain a

230993 - 5 discharge air temperature of 68°F - 70°F (adjustable). Once space relative humidity has been satisfied, the unit shall operate in standard cooling mode to maintain space temperature.

E. Safeties:

1. Provide alarm if temperature varies 5 °F (adj.) from set-point.

2. The following safeties shut down supply fan and activate shut down sequence:

a. Temperature low limit.

b. Temperature high limit

c. Secondary drain pan float switch.

F. Operator interface: Display the following data for each unit (as applicable):

1. System graphic for equipment and all points:

2. Hardware points:

a. Fan Coil Unit fan status (on/off)

b. Fan Coil Unit command (on/off)

c. Cooling coil 3-way modulating control valve (% open)

d. Secondary drain pan float switch (normal/alarm)

e. Heating coil 3-way modulating control valve (% open)

f. Space temperature (°F)

g. Discharge Air Temperature indication (°F)

h. Space humidity (%RH)

i. High / low temperature alarm (normal/alarm)

j. Condensate overflow alarm (normal/alarm)

k. Outside air damper (open/closed)

l. Cooling Coil supply water temperature indication

m. Cooling Coil return water temperature indication

n. Heating Coil supply water temperature indication

o. Heating Coil return water temperature indication

3. Software points:

a. Fan Coil Unit enabled (on/off)

b. Space cooling set-point (°F)

c. Space heating set-point (°F)

d. Space relative humidity setpoint (%RH)

1.8 ELECTRIC UNIT HEATERS CONTROL SEQUENCES

A. Unit control:

1. The heaters shall operate based on a wall mounted zone sensor and BAS outdoor-air temperature sensor.

B. Unit schedule:

1. Unit shall operate when the temperature sensed by the BAS outdoor-air temperature sensor and the unit’s wall mounted senor are less than set-point.

C. Operator Interface: Display the following data:

230993 - 6

1. System graphic.

2. Space temperature indication.

3. Outdoor-air temperature indication.

4. Space temperature set-point, 65°F, adjustable.

5. Outdoor-air temperature set-point, 55°F, adjustable.

6. Alarm temperature set-point, 40°F, adjustable.

7. System command and status indication

8. Alarm for temperature out of range.

1.9 PACKAGED OUTDOOR DEDICATED VENTILATION-AIR UNIT CONTROL SEQUENCES

A. Unit Control:

1. System ventilation fans shall start and run continuously during occupied periods.

2. System shall stop and close the ventilation-air dampers if any alarms are indicated.

3. The unit’s outside dampers shall open 100% on a call for the system to operate and shall close when system is not operational. Dampers shall not open when unit is not operational.

4. A discharge, duct-mounted temperature sensor shall control the unloading compressor(s) and gas heat section operation to maintain cooling or heating ventilation air set-point.

5. A discharge, duct-mounted dew-point temperature sensor shall control the dehumidification operation. The modulating hot gas reheat system shall be controlled to maintain the target dewpoint temperature maximum by overriding the reversing valve in cooling mode.

6. An outdoor dry-bulb temperature sensor shall operate an air-side economizer operation. This may only operate if the discharge temperature and dewpoint temperature set-points are satisfied. During economizer operation the unit’s compressors shall not be allowed to operate.

7. Except for the modulating hot gas reheat operation, the cooling and heating operations shall be configured to not operate simultaneously.

8. Unit shall be provided with VFD for the supply fans. The fans shall not modulate flow. The VFD is for system balancing only.

9. The Temperature Controls Contractor shall furnish and install all necessary sensors, actuators, wiring, components, transformers, etc. required to provide all controls points that are not furnished with the equipment.

10. The Temperature Controls Contractor shall furnish and install duct mounted airflow monitoring station in the ventilation air ducts prior to any branches.

B. Operator Interface: Display the following on operator workstation display terminal:

1. System graphic.

2. System on-off indication.

3. System ventilation supply fan on-off command and status indication.

4. System compressor(s) on-off command and status indication.

5. System heat or cool command and status indication.

6. System gas heat on-off command and status indication.

7. Air-side economizer command and status indication

8. Air-side economizer maximum ambient dry-bulb temperature set-point, 60°F

(adjustable)

9. Air-side economizer maximum ambient dew-point temperature set-point, 57°F

(adjustable).

10. System reheat (dehumidifying) command and status indication.

11. Supply discharge air-temperature and dew-point temperature indication.

12. Supply fan-discharge maximum dew-point temperature set-point

230993 - 7

57°F(summer)/50°F (winter), (adjustable).

13. Supply fan-discharge air-temperature set-point, 68°F(cooling)/72°F(heating), (adjustable).

14. Entering outside air temperature and dew-point temperature indication

15. Airflow monitoring stations, airflow readings in CFM. Provide trend log of airflows at one reading per hour (adjustable)

16. Alarm and stop system if fan-discharge dewpoint temperature exceeds 59°F

(adjustable) for a period greater than 30 minutes (adjustable).

17. Individual alarm outputs and stop system for failures

1.10 CHILLED WATER AND HOT WATER LOOPS CONTROL SEQUENCES

A. The Temperature Controls Contractor shall furnish and install immersion water temperature sensors and water flow sensors as indicated below to monitor the Chilled Water system operation in the Nursing Facility.

BUILDING 30

1. Recreation Room 100 – 2” Chilled Water Supply and Return Main Temperature Sensors.

2. Recreation Room 100 – 2” Chilled Water Supply and Return Main Water Flow Sensors.

3. Pump Room 154 – 4” Hot Water Supply and Return Main Temperature Sensors.

4. Pump Room 154 - 4” Hot Water Supply and Return Main Water Flow Sensors.

BUILDING 31

1. 1st Floor Corridor – 2-1/2” Chilled Water Supply and Return Main Temperature Sensors.

2. 1st Floor Corridor – 2-1/2” Chilled Water Supply and Return Main Water Flow Sensors.

3. 1st Floor Corridor – 2” Hot Water Supply and Return Main Temperature Sensors.

4. 1st Floor Corridor – 2” Hot Water Supply and Return Main Water Flow Sensors.

5. Patient BR 145 – 2-1/2” Chilled Water Supply and Return Main Temperature

Sensors.

6. Patient BR 145– 2-1/2” Chilled Water Supply and Return Main Water Flow Sensors.

7. Patient BR 145– 2” Hot Water Supply and Return Main Temperature Sensors.

8. Patient BR 145– 2” Hot Water Supply and Return Main Water Flow Sensors.

9. 2nd Floor Corridor – 3” Chilled Water Supply and Return Main Temperature

Sensors.

10. 2nd Floor Corridor – 3” Chilled Water Supply and Return Main Water Flow Sensors.

11. 2nd Floor Corridor – 2-1/2” Hot Water Supply and Return Main Temperature

Sensors.

12. 2nd Floor Corridor – 2-1/2” Hot Water Supply and Return Main Water Flow Sensors.

13. Patient BR 239 – 3” Chilled Water Supply and Return Main Temperature Sensors.

14. Patient BR 239 – 3” Chilled Water Supply and Return Main Water Flow Sensors.

15. Patient BR 239 – 2-1/2” Hot Water Supply and Return Main Temperature Sensors.

16. Patient BR 239 – 2-1/2” Hot Water Supply and Return Main Water Flow Sensors.

BUILDING 32

1. Mechanical Room 103 – 6” Chilled Water Supply and Return Main Temperature

Sensors.

2. Mechanical Room 103 – 6” Chilled Water Supply and Return Main Water Flow

Sensors.

3. Conference Room 242 – 6” Chilled Water Supply and Return Main Temperature

Sensors.

4. Conference Room 242 – 6” Chilled Water Supply and Return Main Water Flow

230993 - 8

Sensors.

5. Conference Room 242 – 4” Hot Water Supply and Return Main Temperature

Sensors.

6. Conference Room 242 – 4” Hot Water Supply and Return Main Water Flow Sensors.

BUILDING 33

7. 1st Floor Corridor – 2” Chilled Water Supply and Return Main Temperature Sensors.

8. 1st Floor Corridor – 2” Chilled Water Supply and Return Main Water Flow Sensors.

9. 1st Floor Corridor – 2” Hot Water Supply and Return Main Temperature Sensors.

10. 1st Floor Corridor – 2” Hot Water Supply and Return Main Water Flow Sensors.

11. Patient BR 151 – 2-1/2” Chilled Water Supply and Return Main Temperature

Sensors.

12. Patient BR 151 – 2-1/2” Chilled Water Supply and Return Main Water Flow Sensors.

13. Patient BR 151 – 2” Hot Water Supply and Return Main Temperature Sensors.

14. Patient BR 151 – 2” Hot Water Supply and Return Main Water Flow Sensors.

15. 2nd Floor Corridor – 3” Chilled Water Supply and Return Main Temperature

Sensors.

16. 2nd Floor Corridor – 3” Chilled Water Supply and Return Main Water Flow Sensors.

17. 2nd Floor Corridor – 2-1/2” Hot Water Supply and Return Main Temperature

Sensors.

18. 2nd Floor Corridor – 2-1/2” Hot Water Supply and Return Main Water Flow Sensors.

19. Patient BR 248 – 3” Chilled Water Supply and Return Main Temperature Sensors.

20. Patient BR 248 – 3” Chilled Water Supply and Return Main Water Flow Sensors.

21. Patient BR 248 – 2-1/2” Hot Water Supply and Return Main Temperature Sensors.

22. Patient BR 248 – 2-1/2” Hot Water Supply and Return Main Water Flow Sensors.

B. Operator Interface: Display the following data:

1. System Graphic – Data in Table by Building

a. Indicate location of each sensor location

b. Water Temperature Indications per sensor (°F)

c. Water Flow Indications per senor (GPM)

d. Balanced Water Flow Rate per sensor (GPM). Receive from TAB Contractor.

This value is to be displayed next to Water Flow Indication and shall be static, non-adjustable, for Owner reference only.

1.11 VENTILATING FAN CONTROL SEQUENCES

A. Only Ventilating Fans Tagged EF-1A, EF-1B, EF-2A, and EF-2B shall be monitored.

Temperature Controls Contractor shall provide current monitor and duct mounted airflow monitoring station to verify unit operation. Provide Fans shall operate continuously.

B. Operator interface:

1. System Graphic

2. Fan Status on/off

3. Airflow monitoring stations, airflow readings in CFM. Provide trend log of airflows at one reading per hour (adjustable).

4. Alarm if unit is not operating

230993 - 9

PART 2 - PRODUCTS (Not Applicable)

PART 3 - EXECUTION (Not Applicable)

END OF SECTION 230993

UNDERGROUND HYDRONIC PIPE AND FITTINGS 232114-1

SECTION 232114 - UNDERGROUND HYDRONIC PIPE AND FITTINGS

PART 1 - GENERAL

1.01 SECTION INCLUDES

A. Extent of pipe and fittings required by this Section is indicated on drawings and/or specified herein.

B. Types of pipe and fittings specified in this Section include the following:

1. Piping Materials:

a. Pre-insulated steel piping system.

2. Pipe Fittings:

a. Pre-insulated steel fittings to match pipe.

1.02 QUALITY ASSURANCE

A. Manufacturers: Firms regularly engaged in manufacture of pipe and fittings of types and sizes required, whose products have been in satisfactory use in similar service for not less than 3 years.

B. All materials and installation shall be in conformance with the following:

1. Kentucky Boiler Code

2. ANSI B31.1 "Power Piping".

3. ANSI B31.9 "Building Service Piping".

C. Acceptable Manufacturers:

1. Thermal Pipe Systems, Inc.

2. Tricon.

3. Approved equal.

1.03 SUBMITTALS

A. Product Data: Submit catalog cuts, specifications, installation instructions, and dimensioned drawings.

1.04 DELIVERY, STORAGE, AND HANDLING

A. Where possible, store materials inside and protected from weather. Where outside storage is necessary, elevate above grade and protect from blowing dirt, sand and prolonged UV exposure.

B. Protect flanges and fittings from moisture and dirt by inside storage and enclosure or by packaging with durable, waterproof wrapping.

PART 2 - PRODUCTS

2.01 PRE-INSULATED GASKETED STEEL PIPING SYSTEM

A. Piping: Steel pre-insulated pipe shall be used for hot water service. The pipe shall be joined with mechanical couplings which seal by compression gaskets. Unless otherwise specified, all pipe, fittings, valves, and accessories shall conform to the requirements of ANSI B31.1 and shall be of the proper type for the pressure and temperature of the service.

B. Steel Carrier Pipe and Fittings:

UNDERGROUND HYDRONIC PIPE AND FITTINGS 232114-2

1. Carrier pipe shall be black steel pipe conforming to ASTM A53 Seamless Schedule 80

Standard Weight Grade B. The spigot ends shall be sand blasted and factory coated for corrosion protection.

2. Mechanical couplings shall be ductile iron.

The ductile iron coupling shall be Grade 65-45-12 in accordance with ASTM A-536. The coupling shall have a deep bell push-on configuration with sealing rings meeting ASTM F-477.

The length of the coupling shall be such that, when correctly assembled, it will give the proper end separation. Sealing rings shall be EPDM rubber and supplied by the coupling manufacturer. Sealing rings shall be suitable for continuous service of 250ºF and 150 psig.

The coupling shall be factory insulated using the same casing and insulation as the straight lengths of pipe. The butt seam between pipe lengths and the coupling shall be sealed after testing with 50 mil thick shrink wrap heat applied closures.

3. Fittings shall be insulated.

Fittings shall be pre-insulated by the pipe manufacturer using the same insulation thickness and casing as the pipe. Where necessary laid-up fiberglass casing may be substituted on all or part of the fitting and shall structurally match the casing of the pipe. A thrust plate of the proper size shall be provided when required by the design and shall be an integral part of the fitting. Field applied thrust plates shall not be allowed except by special approval of the engineer. End seals on fittings shall be the same as used on the pipe.

4. Flanges shall be ANSI B16.5 class 150. Gaskets shall be full face 1/8" thick with a durometer rating of 60-70. Bolts, nuts, and washers shall conform to ASTM A-193 and A- 194.

C. Casing Pipe: Casing for the pre-insulated pipe system shall be HDPE.

High Density Polyethylene (HDPE) casing shall be seamless conforming to ASTM D1248, Type III, Grade P34. The thickness shall be defined by a minimum 1% of its nominal diameter but not less than 150 mils. For example, a 12" pipe cased in a 16" jacket with thickness requirement 16 mils/diameter inch or 1% all result in a thickness of 0.160". Casing for couplings shall match that of the pipe. Joint closure shall be sealed with heat shrinkable adhesive backed sleeve fabricated from thermally stabilized radiation crosslinked and ultraviolet resistant polyethylene outer layer and high temperature resistant mastic inner layer. The sleeve shall have a minimum tensile strength of 2400 psi per ASTM D412 and shore hardness between 40 and 60 "D" scale per ASTM D.2240.

1. The HDPE casing-foam system shall be suitable for H-20 highway loading with two feet of cover providing that the pipe bedding and backfill material are properly placed and compacted to H-20 specifications.

D. End Seals: End seals for pre-insulated steel pipe shall be certified to resist infiltration of water at

20 feet of head at the intended operating temperature. Mastic end seals which may meet the requirements of the 20 foot test shall not be allowed.

E. Insulation: Insulation shall be polyurethane closed cell foam, completely encapsulated on each end by a compression rubber end seal.

1. Polyurethane foam insulation shall meet the following specifications:

Type: Two component urethane Compressive Strength: 35 psi parallel min at 5% comp.

Shrinkage: None at 70ºF Free Rise Density: 2.0 to 3.0 lbs/cubic foot Aged "K" (70ºF - 72 hrs) 0.160 BTU-in/hr-ft²-ºF

UNDERGROUND HYDRONIC PIPE AND FITTINGS 232114-3

Closed Cell Content: 90% Thickness 2-inches

3. Insulation concentricity: Carrier pipe shall be concentric to casing pipe. The allowable maximum deviation from center line of carrier pipe shall be plus or minus 1/4 inch at the casing center point and plus or minus 1/16 inch at the end seals.

F. Wall Penetration Sleeves: Provide wall penetration sleeves where piping passes through masonry or concrete walls. Sleeves in outside walls below and above grade shall be schedule 40 or standard weight coated black steel pipe. Sleeves shall be held securely in proper position and location during construction. Sleeves shall be of sufficient length to pass through entire thickness of walls or slabs. Refer to typical detail of wall penetration as shown. In existing concrete manholes or building walls, penetrations may be made using the "core drilling" method, providing proper care is taken to drill the holes to the size needed and square to the line of the pipe.

PART 3 - EXECUTION

3.01 GENERAL

A. Installation of the piping system shall be done in accordance with the appropriate publications including ANSI B31.1 and the following specifications and instructions.

B. Factory furnished lengths of pipe shall be utilized to the maximum extent. Field cutting of pipe shall be kept to a minimum. Pipe shall be worked into place without springing or forcing, properly clearing all openings and equipment. Pipe ends shall have burrs removed by reaming and shall be installed to permit free expansion and contraction without damage to joints. Good workmanlike procedures shall be followed.

C. Open ends of pipe lines and equipment shall be properly capped or plugged during installation to keep dirt or other foreign matter out of the system.

3.07 BEDDING

A. Bedding material shall be sand, pea gravel, or other materials free of sharp objects, heavy clods, boulders, or frozen lumps. The approved bedding shall be used 6" under, around and over the pipe. Utilize the best professional practices that apply to buried pressure piping.

3.08 ASSEMBLY OF PIPE AND FITTINGS

A. Pipe and fittings shall be assembled in strict accordance with the manufacturer's requirements.

3.09 TESTING

A. Testing shall be performed and system proven tight before closure of insulated field joints or backfilling. Prior to testing, flush pipe system with fresh water until piping is free of dirt and foreign matter. Use only fresh water for field tests. Air must be removed from system before starting tests.

A hydrostatic test of 150 psi or 1 1/2 times working pressure, which ever is greater, shall be placed on the system for a period of two hours.

B. During pressure testing, examine system for leaks. Repair joint leaks, replace damaged or porous pipe and fittings, and repeat all tests until satisfactory tests are achieved.

END OF SECTION 232114

2.34 Refer to Drawings DE1.1, DE1.2, DE1.3, and DE1.4. Where existing ceilings are removed any open cabling not properly supported shall be tied up and supported to not contact new ceiling grids or devices in accordance with National Electrical Code requirements.

Attachments:

1. Hot Work Permit

2. Section 230993 Revised 08-23-2024

3. Section 232114

END OF ADDENDUM 2.00

2024-08-22 Addm 2.00