City of Culver City
RFP No. 2520 CITY YARD HVAC REPLACEMENT
Exhibit A – Technical Specifications
Maintenance Yard
Technical Performance Specifications for
Implementation of Mechanical Energy Efficiency
Upgrades
A14CMC12
Prepared For:
Maintenance Yard
9505 W Jefferson Blvd
Culver City, CA 90232
Prepared By:
County of Los Angeles/Southern California
Regional Energy Network (SoCalREN)
Scope and Technical Specifications Developed By:
TRC Companies
June, 2024
1 Table of Contents
A Project Supported by SoCalREN................................................................................................................. 2 Disclaimer...................................................................................................................................................... 2 1) 3
2) 3
2.1 Terms and Conditions ........................................................................................................................................ 3
2.2 Prevailing Wages .................................................................................................................................................. 5
2.3 Meetings ................................................................................................................................................................... 6
2.4 Logistics.................................................................................................................................................................... 6
2.5 Time Schedule for the project ......................................................................................................................... 7
2.6 Bid Schedule ........................................................................................................................................................... 7 3) 7
3.1 Preconstruction .................................................................................................................................................... 7
3.2 Warranty Requirements .................................................................................................................................... 8
3.3 Training .................................................................................................................................................................... 8
3.4 Close-Out .................................................................................................................................................................. 8 4) 9
4.1 Technical Specifications .................................................................................................................................... 9
4.1.1 Replace Rooftop Packaged Units with Rooftop Packaged Heat Pumps 10
4.1.2 Replace Make-Up Air Unit with Rooftop Packaged Heat Pumps 13
4.1.3 Exhaust Fan Replacements – 15
4.2 Testing, Adjustment, and Balancing ........................................................................................................... 17
4.3 Implementation Verification ......................................................................................................................... 17
4.4 Measurement and Verification ..................................................................................................................... 17
4.5 Training .................................................................................................................................................................. 17
2 A Project Supported by SoCalREN
Southern California Regional Energy Network (SoCalREN) Public Agency Program, administered by Los Angeles County, was authorized by the California Public Utilities Commission to help eligible public agencies in Southern California harness their collective action, save energy, reduce operating costs and protect precious resources. To expand public agency participation in utility energy efficiency programs, SoCalREN is offering a range of free energy efficiency services to assist public agencies with accelera ting energy retrofits.
The mechanical upgrade project at the City of Culver City’s Maintenance Yard is being supported by SoCalREN. The services provided as Construction Management Support are outlined in Appendix A Responsibility Matrix Please refer to this document to better understand the relationship and role of SoCalREN Project Manager and assigned Energy Consultant.
Participation of SoCalREN is entirely at the discretion of the City of Culver City and SoCalREN may modify or terminate its services based on funding availability.
Disclaimer
The products in this report represent examples based on their efficiency and impact on project economics.
Measures will require more detailed engineering analysis of feasibility and constructabili ty. This study does not include specific design instructions and is not intended as a design document. The selected design professional or installation contractor shall accept responsibility and liability for the results.
3 1) Executive Summary
The Maintenance Yard at the city of Culver City (“City”) is a two -story, approximately 82,000 square feet building. The building is usually occupied between 7AM and 6PM during weekdays and closed on weekends. The building is served by nine (9) packaged rooftop units with DX cooling coils and gas heating 5-7.5 tons in size. All heating ventilation and air conditioning (HVAC) units are controlled by programmable thermostats. The facility has five make -up air units with gas furnace and 23 exhaust fans serving the facility. The City of Culver City is planning various energy efficiency upgrades at the Maintenance Yard including the following measures:
● Replace Rooftop Packaged Units with Rooftop Packaged Heat Pumps ● Replace Make-Up Air Unit with Rooftop Packaged Heat Pumps ● Exhaust Fan Replacements –
SoCalREN is supporting the City by discussing the pros and cons of the various technology options and helping to identify the scope that will most effectively meet the City’s goals.
The Following parties are involved during the project construction:
● Agency Construction Manager (CM): City representative assigned as Construction Manager ● Contractor: Installation contractor
2) General
2.1 Terms and Conditions
The Contractor is expected to perform the construction work in compliance with the specific project requirements listed below. Details of these items will be discussed at the Pre -Construction meeting and memorialized in the meeting minutes for that meeting.
Contract terms and conditions put forth by the City as part of this project and contained in Request for Proposals No. 2520 should not conflict with the scope of work terms and conditions. If a discrepancy should arise, the City’s contract terms and conditions will take precedence.
The Contractor shall adhere to the following terms and conditions throughout the project:
a) Contractor shall conduct all work during business hours in all areas unless previously approved and scheduled with the City . Contractor shall comply with safety requirements in accordance with City requirements and Cal/OSHA.
b) Contractor must notify the City in advance of any work that may be disruptive to the normal operations and parking lot traffic flow. Any shutdown of service and/or utilities must be approved and scheduled with the City and be implemented in a manner intended not to interrupt the daily operation of the facility. Contractor must obtain approval of the City if a portion of the work needs to be performed after hours.
c) Contractor shall do all that is necessary to maintain a safe working environment for Contractor’s employees, the City, facility employees, and the general public present. Safety signs, barricades,
4 and/or other materials will be erected by the Contractor to warn patrons and keep staff away from work areas. Safety of patrons, City staff, and Contractor’s employees shall be a priority and shall be the responsibility of the Contractor.
d) Contractor shall work with the City facility staff to understand and abide by any site -specific security procedures.
e) Contractor shall clean up any construction dust, dirt, and debris from work surfaces or equipment after work is completed each day and prior to occupancy. f) Contractor shall immediately notify the City of any and all issues that may result in a project delay and/or impact work quality or safety.
g) The City must be informed of and approve all work performed by subcontractors; however, the City will deal only with the Contractor regarding work done and costs incurred by subcontractors. h) Contractor shall be very careful to leave the facility with no damage to its structure, contents, existing finishes, and with no evidence of cutting or patching. i) Contractor is responsible for removing all construction and packing debris from the work site and keeping a clean, safe work area at all times. Clean up of the work area shall be at no additional cost to the City. If hazardous materials are encountered during execution of the contract, the Contractor will be responsible for removing and disposing said materials in accordan ce with federal, state, and local statutes and codes. Contractor will provide the City with appropriate documentation regarding the disposal of said hazardous materials as requested or required. j) Contractor shall be very careful to leave the facility with n o damage to its structure, contents, existing finishes, and with no evidence of cutting or patching. The Contractor will be held liable for the cost of repair or replacement of structures, utility systems, and any other parts of the facility damaged by the Contractor’s acts of negligence or lack of full adherence to the requirements of the Scope of Work contained herein. Contractor will be held liable for the cost of repair or replacement of building components and/or vehicle(s) damaged by falling/flying equipment and/or debris.
k) All work shall be performed in accordance with all Federal, state, and local codes. l) Contractor shall perform work in accordance with applicable requirements of governing codes, rules and regulations including the following minimum standards, whether statutory or not:
● California Electrical Code (CEC) Title 24, Part 3
● California Building Energy Efficiency Code (CBEEC) Title 24, Part 6 ● California Appliance Efficiency Regulations, Title 20 ● American Society of Heating, Refrigerating an d Air -Conditioning Engineers (ASHRAE) Standards
● National Electrical Code, including Los Angeles County and City of Culver City, local interpretation.
● Equipment and materials specified under this performance specification shall conform to the standards of UL, ASTM, NEMA, ANSI, and ETL. Base materials shall be ASTM and/or ANSI standards. Electrical manufactured apparatus furnished under this section shall conform to National Electrical Manufacturer's Association (NEMA) standards and shall
5 bear the Underwriters' Laboratories (UL) or Electrical Testing Laboratory (ETL) label where such a label is applicable.
● Contractor is responsible for securing all necessary permits, including 2022 Title 24 energy code documentation and compliance permits, and shall abide by local laws and regulations.
m) All work shall be warranted against defects in material and workmanship for a minimum period of one year from the date of acceptance. Any applicable warranty information beyond this should be stated and provided upfront in the Price Schedule form of RFP No. 2520. n) Descriptions, size, quantity, and condition of existing equipment reported in this document is for guidance only. Contractor shall independently verify all existing site conditions. The City wi ll not be responsible for any restocking fees associated with extra or incorrectly ordered equipment. o) Provide copies of the all the applicable licenses to the City before beginning the work including but not limited to C -10 - Electrical Contractor and C-20 Warm-Air Heating, Ventilating and Air Conditioning.
p) Contractor shall survey work areas, access, and conditions of existing systems. Also, log the existing conditions to discuss with the City officials and get all required approvals from the City to continue with the project implementation.
q) Schedule the work after the approval from the City so as to minimize interruption of daily operation of the facility. Contractor to check with the City if a portion of their work needs to be performed after hours.
r) Contractor must meet the insurance and/or bond requirements outlined by the City in the Draft Standard Agreement attachment of RFP 2520.
s) Any other cost of business fees/expenses associated with performing the City work are to b e included in the bid.
t) Written approval from the City in the form of executing a contract must be received in order to complete the work assigned.
u) All goods and/or services shall comply with applicable OSHA regulations in effect at the time goods are shi pped and/or the service is performed. Material safety data sheets (MSDS) are required in accordance with applicable regulations. MSDS must be left on site immediately after goods and/or services have been provided.
v) Contractor will provide City information and assistance with incentives (green initiatives) and/or credits that the Contractor is aware of, and believes the City is eligible to receive, that may be offered by manufacturers, utility companies, state and/or federal agencies.
2.2 Prevailing Wages
a) Contractor shall be required to pay the prevailing rate of wages in accordance with the labor code and the State of California’s prevailing wage laws.
6 2.3 Meetings
Contractor shall attend the following meetings complete with preparation and follow-up:
a) Pre-construction logistics meeting: for introduction to team members, to understand roles and responsibilities, to discuss the construction schedule, and to learn the submittal transmittal process. At the pre -construction meeting, the construction manager (CM ) shall establish a mechanism for ongoing verification/inspection of work.
b) Submittal review meetings, as needed: for discussion of major submittal -related issues that cannot be resolved through the submittal transmittal process. c) Construction kickoff meetin g: to resolve any remaining pre -construction issues, discuss safety concerns, and begin construction on site.
d) Regular construction meetings, as needed: to discuss punch list items, the progress of the construction, and safety issues with upcoming work.
e) Final job walk(s): to convey substantial completion to project team members, inspect completion of the punch list items, and request final acceptance. Contractor shall schedule this meeting and the City CM and facility personnel shall attend.
f) Contractor s hall review meeting minutes circulated after each meeting and resolve all action items assigned to Contractor by the due date indicated in the minutes.
2.4 Logistics
Contractor shall coordinate logistics with the City to ensure safe and timely execution of the work. At a minimum, Contractor shall perform the following activities:
a) The City shall provide a site -specific safety briefing to Contractor upon approval of the construction schedule. Contractor shall submit a safety plan per California OSHA standard s as required in the contract with the City.
b) Contractor shall work with the City and facility personnel to understand and abide by security procedures, as applicable.
c) The City will assist to coordinate parking for Contractor’s vehicles. The parking strategy will be finalized in the pre-construction logistics meeting.
d) The City shall designate an area at each of the facilities for equipment storage and staging. The staging area(s) will be finalized in the pre-construction logistics meeting. e) Contractor shall coordinate with the City CM prior to moving Contractor’s equipment, tools, and materials onto the construction site at the start of the project. f) Contractor shall be responsible for the security of Contractor’s properties, tools, equipment, construction materials, and all other items contained in Contractor’s staging area(s) or elsewhere on the construction site .
g) Contractor shall check in with the City CM at the start of each shift. the City CM will facilitate access to the scheduled location .
7 h) Contractor shall notify the City CM one week prior to any scheduled shutdowns of HVAC systems, equipment, or utilities, as needed , and arrange for the delivery, set -up and operation of temporary HVAC equipment in the affected areas. The City CM shall be responsible for notifying tenants of the scheduled shutdowns.
i) Contractor will manage delivery and staging of material to the site , including any secured storage considerations.
j) All equipment and materials removed or demolished under the terms of this project are to become the property of Contractor and are to be removed from the site and properly disposed of, unless stated otherwise by the City. Recyclable, non-hazardous material will be recycled.
2.5 Time Schedule for the project
The Contractor shall complete the project within two months from the Notice to Proceed (NTP). The Contractor shall provide a project timeline identifying various milestones to meet the required schedule.
2.6 Bid Schedule
Refer to RFP No. 2520 Section E – Schedule to view the bid schedule. 3) Submittals
Contractor will provide submittals as outlined below:
3.1 Preconstruction
Contractor shall provide the following submittals in their proposal prepared in response to RFP 2520:
a) Proposed construction schedule with major milestones indicated. May include, but not limited to:
● Equipment order
● Anticipated equipment delivery date
● Construction start and completion by site or major area ● Project walk through and punch list development
● Project sign off
If Contractor is selected and a contract executed with the City, within 5 working days after issuing the Notice to Proceed, the Contractor will prepare and submit the following items:
b) Work plan
c) Safety plan
d) Construction permits (as a City facility, no-fee permits will be issued by the City’s Building Safety Department to the Contractor.)
e) Equipment submittals
8 f) Certifications for safety testing, acoustic testing, structural testing where applicable g) Hazardous Waste Disposal Certificates as requested or required. h) Forms for list of points, 2024 Title -24 Compliance forms, start -up, pre -functional checklist, functional performance tests.
i) Plans for system layouts, controls drawings, refrigerant piping, water piping where applicable, and singe line airflow and single life refrigerant plans.
j) Control drawings and documentation of sequences
3.2 Warranty Requirements
Warranty documentation for all the installed equipment and controls. ● Any applicable warranty information should be stated and provided upfront. ● All materials shall be new and of good quality, free from damage or defect. Warranty periods shall commence at the time of final acceptance. All work furnished shall be guaranteed against defective materials, workmanship and/or improper performance for a minimum period of one year after final acceptance of the work. During this period, the Contractor shall provide replacement materials and the necessary labor to replace defective materials and repair incorrectly operating systems.
● HVAC Equipment:
o Provide a written multi-year warranty provided by the manufacturer of on-site replacement material and equipment. On-site replacement includes transportation, removal, and installation of new products.
3.3 Training
Provide necessary training required for maintenance and document relevant training documents for the City's reference.
3.4 Close-Out
Within five days of notifying the City of substantial completion, contractor shall provide the following submittals:
a) Final signed-off punch list
b) Executed final acceptance form
● Final inspection approval report from the City’s Building Safety Division must be received to deem the work as complete and satisfactory.
c) As-builts including but not limited to system layouts, controls drawings, refrigerant piping, water piping where applicable, single line airflow, single line refr igerant plans, control drawings and
9 sequence of operations. Operation and maintenance (O&M) manuals for all the installed HVAC and controls equipment.
d) Systems manual, cut sheets, O&M manuals for mechanical and electrical systems, and all other related manufacturer provided documents on all the new products/equipment installed. e) Warranty documentation for all the installed HVAC and controls equipment. f) Reports for pre -functional checklists, TAB, functional tests, commissioning documents, measurement and verification measurements, trend data, etc. g) Training session outline
● Provide necessary training required for future maintenance and document relevant training documents for the City's reference.
Submittals shall not be considered complete until they are reviewed and approved by the City. Contractor shall make corrections and transmit the revised submittal for approval.
4) Execution of Mechanical Projects
The Contractor is responsible for selecting, procuring, and coordinating installation of system equipment to provide fully functional HVAC packaged units and exhaust fans as outlined in this performance specification.
This performance specification does not include all details required for the completion of the work. The Contractor shall be responsible fo r the cost of all items required for a complete and fully functional system. The Contractor shall provide all materials, tools, equipment, and services required to meet the scope of work.
4.1 Technical Specifications
The City is planning various HVAC upg rades and proposed equipment is to be furnished and installed by the Contractor to meet the performance specifications provided below. The Contractor is responsible for identifying any modifications or changes to the proposed equipment selection and is res ponsible for obtaining written approval from the City to adopt any equipment schedule modifications or changes.
4.1.1 Replace Rooftop Packaged Units with Rooftop Packaged Heat Pumps Existing Units Proposed Units
Unit Tag Description Manufacturer Model/
Serial
Cooling
Tons
Heating
MBH
Recommended
Manufacturer
Cooling
Tons
Min
IEER/
SEER
Heatin
g MBH HSPF/COP
AC-1
Gas Electric
Packaged
Rooftop Unit
Carrier 48SS-060 5 65 Trane 5 16 SEER 65 8.5 HSPF
10 Existing Units Proposed Units
Unit Tag Description Manufacturer Model/
Serial
Cooling
Tons
Heating
MBH
Recommended
Manufacturer
Cooling
Tons
Min
IEER/
SEER
Heatin
g MBH HSPF/COP
AC-2
Gas Electric
Packaged
Rooftop Unit
Carrier 48SS-060 5 65 Trane 5 16 SEER 65 8.5 HSPF
AC-3
Gas Electric
Packaged
Rooftop Unit
Carrier 48TSS-048 4 65 Trane 4 16 SEER 65 8.5 HSPF
AC-4
Gas Electric
Packaged
Rooftop Unit
Carrier 48TJD008 7.5 100 Trane 7.5 15.0 IEER 100 3.2 COP AC-5
Gas Electric
Packaged
Rooftop Unit
Trane YCH091H 7.5 120 Trane 7.5 15.0 IEER 120 3.2 COP
AC-6
Gas Electric
Packaged
Rooftop Unit
Trane YCH049H 4.0 90 Trane 4.0 16 SEER 90 8.5 HSPF
AC-7
Gas Electric
Packaged
Rooftop Unit
Trane YCH049H 4.0 90 Trane 4.0 16 SEER 90 8.5 HSPF
AC-8
Gas Electric
Packaged
Rooftop Unit
Trane YCH049H 4.0 90 Trane 4.0 16 SEER 90 8.5 HSPF
AC-9
Gas Electric
Packaged
Rooftop Unit
Trane YCH091H 7.5 120 Trane 7.5 15.0 IEER 120 3.2 COP
The City is planning to replace the nine (9) existing gas electric packaged rooftop units (RTUs) at the maintenance yard with new Title 24 compliant packaged heat pump units. The following outlines the responsibilities the Contractor is accountable for with respect to the packaged rooftop unit replacement at this site:
● Contractor shall disconnect and remove the nine (9) existing gas electric packaged RTUs. The Contractor is responsible for the removal and disposal of the existing RTUs in accordance with local, state and federal regulations, and the Contractor will provide all the necessary equipment, labor, and materials to safely accomplish said removal and disposal. The Contractor shall recover and dispose of the refrigerant from the existing rooftop units per U.S.
Environmental Protection Agency (EPA) guidelines.
Contractor shall furnish and install nine (9) packaged rooftop heat pumps from Trane. If the Contractor is not able to furnish Trane units meeting the minimum efficiency requirements from the above table, the C ontractor shall recommend other high-quality manufacturers meeting the above requirements for the City to consider as a substitute. The City’s
11 evaluation and subsequent determination whether to accept or reject non -Trane manufactured equipment is at the sole discretion of the City. ● The new units shall fully support the integration of third -party control systems through the BACnet protocol. They shall be furnished and installed with BACnet MS/TP and/or BACnet IP capable controllers to meet this requirement.
● Contractor shall provide new Wi-Fi enabled thermostats for all the new heat pump units. ● The new units shall have operating efficiencies compliant with 2022 Title 24 minimum efficiency requirements. See above table.
● Contractor shall provide all labor, materials, equipment, accessories, etc., required for the design, purchase, delivery, and installation of nine (9) new packaged rooftop heat pumps. All materials and equipment furnished for this job shall be in current production an d shall be made of high-quality material. Used, shopworn, demonstrator, prototype, reconditioned, or discontinued equipment or materials are not acceptable. ● The units must be factory packaged and tested according to ARI, ASHRAE, UL, and any other applicable code standards.
● All work shall be performed in accordance with current applicable building, plumbing, electrical, and HVAC codes. The Contractor shall be responsible for obtaining all necessary permits.
● Contractor shall conduct a survey of the existi ng electrical service and upgrade it to be compatible with the new packaged rooftop heat pumps. Contractor shall analyze the existing electrical service configuration, power, and capacity.
● The nine (9) packaged rooftop heat pumps shall be sized to m eet or exceed the cooling, heating, and ventilation loads of the present RTUs, whichever best meets the facility needs and budget.
● Contractor shall evaluate the existing roof structure and ensure they can support the weight of the new heat pumps.
● Contractor shall remove the existing ductwork and install new ductwork. The Contractor shall perform duct leak remediation as required in compliance with 2022 Title 24 Standards and Regulations, Section 110.
● Contractor shall verify the existing electrical connections to the existing RTUs prior to ordering the new units and shall provide a new fused disconnect switch, fused to provide maximum over-current protection required by the new unit, and make additional modifications to the circuit breaker and/or electrical feeders serving the unit if a larger breaker and/or feeders are required.
● Contractor shall cap the existing gas connections to the rooftop units. ● Any electrical wiring from the source to the newly installed units is the Contractor’s responsibility.
● The Contractor shall provide curb adapters and all associated roofing required to install new units on existing roof curbs and provide a weather-tight installation of new units. ● All installations shall be in accordance with manufacturer’s recommendations. ● Contractor shall install/implement control sequences to include but not limited to:
o Equipment Start/Stop
12 o Economizer Control (Units with mechanical cooling capacity greater than 54,000 Btu/hr.)
o Economizer Fault Detection and Diagnostics (Units with mechanical cooling capacity greater than 54,000 Btu/hr.)
o All other 2022Title-24 Required Controls
● Contractor shall ensure the new heat pump units are programmed to comply with the City’s requests.
● Contractor shall install new smoke detecting devices and connect them to the existing fire alarm systems in cooperation with SDD Alarm, the City’s fire alarm monitoring firm. . ● Contractor shall develop and supply comprehensive documentation and supporting materials associated with the sequence of operations developed for the nine (9) packaged rooftop heat pumps for the City’s reference and future use.
● Contractor shall ensure that appropriate testing, adjusting and balancing measurements are used to ensure compliance with minimum ventilation requirements per code. ● Contractor is responsible for the start-up and commissioning of the nine (9) packaged rooftop heat pumps. All systems must be fully functional and operational after installation. If follow - up work is required to correct the installation, the City shall not be charged. The Contra ctor shall provide a system manual and a detailed commissioning report with all the findings and equipment submittals.
● Contractor shall train key City staff on operation and general maintenance of the units. Prior to leaving the job site, the Contractor shall provide the City with all manufacturers' warranty documents upon completion of installation and training. ● Contractor shall respond to inquiries within 24 hours and will service any non -working units on the day of the call during the warranty period. Th e City will not be responsible for any additional costs to repair or replace new equipment or parts that are still under warranty; the Contractor is responsible for all liability.
● Unless otherwise specified, the Contractor shall unconditionally guarantee the labor and the materials used in performance of this contract within the specified guidelines and recommendations of the manufacturer’s warranty. If any defects or signs of deterioration are noted which in the City’s opinion are due to faulty workmanship or materials, the Contractor shall be notified and shall make the necessary repairs to correct any deficiency in the system at the Contractor’s expense.
4.1.2 Replace Make-Up Air Unit with Rooftop Packaged Heat Pumps This measure proposes replacing the existing (5) make up air units with packaged rooftop heat pumps.
The existing units do not have cooling capability and the proposed units cooling capability and capacity shall be confirmed by the contractor after discussion with the City.
13 Existing Units Proposed Units
Unit Tag Description Manufacturer Model/
Serial
Cooling
Tons
Heating
MBH
Recommended
Manufacturer
Cooling
Tons
Min
IEER/
SEER
Heating
MBH HSPF/COP
MUA-1
Make-Up Air/
Gas Furnace
Unit
Modine WSG-101 N/A 80 Trane TBD 16 SEER 80 8.5 HSPF
MUA-2
Make-Up Air/
Gas Furnace
Unit
Modine WSG-101 N/A 80 Trane TBD 16 SEER 80 8.5 HSPF
MUA-3
Make-Up Air/
Gas Furnace
Unit
Modine WSG-250 N/A 200 Trane TBD 15.0 IEER 200 3.2 COP
MUA-4
Make-Up Air/
Gas Furnace
Unit
Modine WSG-251 N/A 240 Trane TBD 15.0 IEER 240 3.2 COP
MUA-5
Make-Up Air/
Gas Furnace
Unit
Modine WSG-302 N/A 240 Trane TBD 15.0 IEER 240 3.2 COP
The following outlines the responsibilities the Contractor is accountable for with respect to the make -up air unit replacement at this site:
● Contractor shall disconnect and remove the five (5) make -up air units with gas furnace. The Contractor is responsible for the removal and disposal of the existing MUAs in accordance with local, state and federal regulations, and the Contractor will provide all the necessary equipment, labor, and materials to safely accomplish said removal and disposal. ● Contractor shall furnish and install five (5) packaged rooftop heat pumps from Trane. If the Contractor is not ab le to furnish Trane units meeting the minimum efficiency requirements from the above table, the Contractor shall recommend other manufacturers meeting the above requirements in their proposal.
● The new units shall fully support the integration of third-party control systems through the BACnet protocol. They shall be furnished and installed with BACnet MS/TP and/or BACnet IP capable controllers to meet this requirement.
● Contractor shall provide new Wi-Fi enabled thermostats for all the new heat pump units. ● The new units shall have operating efficiencies compliant with 2022 Title 24 minimum efficiency requirements. See above table.
● Contractor shall provide all labor, materials, equipment, accessories, etc., required for the design, purchase, delivery, and installation of five (5) new packaged rooftop heat pumps. All materials and equipment furnished for this job shall be in current production and shall be of quality material. Used, shopworn, demonstrator, prototype, reconditioned, or discontinued equipment or materials are not acceptable.
14 ● The units must be factory packaged and tested according to ARI, ASHRAE, UL, and any other applicable code standards.
● All work shall be performed in accordance with current applicable building, plumbing, electrical, and HVAC codes. The Contractor shall be responsible for obtaining all necessary permits.
● Contractor shall conduct a survey of the existing electrical service and upgrade it to be compatible with the new packaged rooftop heat pumps. Contractor shall analyze the existing electrical service configuration, power, and capacity.
● The five (5) packaged rooftop heat pumps shall be sized to meet or exceed the cooling, heating, and ventilation loads of the spaces served by the make -up air units, whichever best meets the facility needs and budget.
● Contractor shall evaluate the existing roof structure and ensure they can support the weight of the new heat pumps
● Contractor shall remove the existing ductwork and install new ductwork. The Contractor shall perform duct l eak remediation as required in compliance with 2022 Title 24 Standards and Regulations, Section 110.
● The new ductwork shall be sized to meet or exceed the cooling, heating, and ventilation loads of the present MUAs, whichever best meets the facility needs and budget. ● Contractor shall verify the existing electrical connections to the existing MUAs prior to ordering the new units and shall provide a new fused disconnect switch, fused to provide maximum over -current protection required by the new unit, and ma ke additional modifications to the circuit breaker and/or electrical feeders serving the unit if a larger breaker and/or feeders are required.
● Contractor shall cap the existing gas connections to the make-up air units. ● Any electrical wiring from the source to the newly installed units is the Contractor’s responsibility.
● The Contractor shall provide curb adapters and all associated roofing required to install new units on existing roof curbs and provide a weather-tight installation of new units. ● All installations shall be in accordance with manufacturer’s recommendations. ● Contractor shall install/implement control sequences to include but not limited to:
o Equipment Start/Stop
o Economizer Control (Units with mechanical cooling capacity greater than 54,000 Btu/hr.)
o Economizer Fault Detection and Diagnostics (Units with mechanical cooling capacity greater than 54,000 Btu/hr.)
o All other 2022 Title-24 Required Controls
● Contractor shall ensure the new heat pump units are programmed to comply with the City ’s requests.
● Contractor shall install smoke detector and connect to existing fire alarm systems if required by code.
15 ● Contractor shall develop and supply comprehensive documentation and supporting materials associated with the sequence of operations developed for the five (5) packaged rooftop heat pumps for the City’s reference and future use.
● Contractor shall ensure that appropriate testing, adjusting and balancing measurements are used to ensure compliance with minimum ventilation requirements per code. ● Contractor is responsible for the start-up and commissioning of the five (5) packaged rooftop heat pumps. All systems must be fully functional and operational after installation. If follow - up work is required to correct installation, the City shall not be charged. The Contractor shall provide a system manual and a detailed commissioning report with all the findings and equipment submittals.
● Contractor shall train key City staff on operation and general maintenance of the units. Prior to leaving the job site, the Contractor shall provide the City with all manufacturers' warranty documents upon completion of installation and training. ● Contractor shall respond to inquiries within 24 hours and will service any non -working units on the day of the call during the warranty period. The City will not be responsible for any additional costs to repair or replace new equipment or parts that are still under warranty; the Contractor is responsible for all liability.
● Unless otherwise specified, the Contractor shall unconditionally guarantee the labor and the materials used in performance of this contract within the specified guidelines and recommendations of the manufacturer’s warranty. If any defects or signs of deterioration are noted which in the City’s opinion are due to faulty workmanship or materials, the Contractor shall be notified and shall make the necessary repairs to correct any deficiency in the system at the Contractor’s expense.
4.1.3 Exhaust Fan Replacements
This measure proposes replacing the existing exhaust fans serving the facility. The following provides more detail on the proposed equipment and procedural requirements.
Existing Units Proposed Units
Unit Tag Description Manufacturer Model/
Serial CFM Type Recommended
Manufacturer CFM Type
EF-1 Exhaust Fan
Loren Cook
ACRU-100
R28
700
10” Cent.
B.I.
TBD
700
Cent. B.I.
EF-2 Exhaust Fan
Loren Cook
ACRU-100
R28
125
9” Cent.
B.I.
TBD
125
Cent. B.I.
EF-3 Exhaust Fan
Loren Cook
ACRU-165
R68
2100
16.5”
Cent. B.I.
TBD
2100
Cent. B.I.
16 Existing Units Proposed Units
Unit Tag Description Manufacturer Model/
Serial CFM Type Recommended
Manufacturer CFM Type
EF-4 Exhaust Fan
Loren Cook
ACRU-135
R58
1600
13.5”
Cent. B.I.
TBD
1600
Cent. B.I.
EF-5 Exhaust Fan
Loren Cook
ACRU-210
R68
4000
21” Cent.
B.I.
TBD
4000
Cent. B.I.
EF-6 Exhaust Fan
Loren Cook
ACRU-135
R38
350
13.5”
Cent. B.I.
TBD
350
Cent. B.I.
EF-7 Exhaust Fan
Loren Cook
ACRU-120
R38
950
12” Cent
B.I.
TBD
950
Cent. B.I.
EF-8 Exhaust Fan
Loren Cook
GN-520
240
13.5”
Tubular
Cent.
TBD
240
Tubular
Cent.
EF-9 Exhaust Fan
Loren Cook
ACRU-135
R48
950
12” Cent.
B.I.
TBD
950
Cent. B.I.
EF-10 Exhaust Fan
Loren Cook
ACRU-245
R98
6000
24.5”
Cent. B.I.
TBD
6000
Cent. B.I.
EF-11 Exhaust Fan
Loren Cook
UCIC 225
9000
21”
Tubular
Cent.
TBD
9000
Tubular
Cent.
EF-12 Exhaust Fan
Dayton
3C413
9,000
34” Tube
Axial –
Upblast
Discharge
TBD
9,000
Tube Axial
– Upblast
Discharge
EF-13
Exhaust Fan
Dayton
3C413
9,000
34” Tube
Axial –
Upblast
Discharge
TBD
9,000
Tube Axial
– Upblast
Discharge
EF-14
Exhaust Fan
Loren Cook
UCIC-180
4600
15” Tube
Axial –
Upblast
Discharge
TBD
4600
Tube Axial
– Upblast
Discharge
EF-15
Exhaust Fan
Loren Cook
UCIC-225
9000
21” Tube
Axial –
Upblast
Discharge
TBD
9000
Tube Axial
– Upblast
Discharge
17 Existing Units Proposed Units
Unit Tag Description Manufacturer Model/
Serial CFM Type Recommended
Manufacturer CFM Type
EF-16
Exhaust Fan
Loren Cook
UCIC-225
9000
21” Tube
Axial –
Upblast
Discharge
TBD
9000
Tube Axial
– Upblast
Discharge
EF-17
Exhaust Fan
Loren Cook
UCIC-225
9000
21” Tube
Axial –
Upblast
Discharge
TBD
9000
Tube Axial
– Upblast
Discharge
EF-18
Exhaust Fan
Loren Cook
ACRU-120
R38
1000
12” Cent.
B.I.
TBD
1000
Cent. B.I.
EF-19 Exhaust Fan
Loren Cook
GN-720
400
12” Cent.
B.I.
TBD
400
Cent. B.I.
EF-20 Exhaust Fan
Loren Cook
ACRU-245
R98
200
10” Cent.
B.I.
TBD
200
Cent. B.I.
EF-21 Exhaust Fan
Loren Cook
240
Cent.
TBD
240
Cent.
EF-22 Exhaust Fan
Loren Cook
240
Cent.
TBD
240
Cent.
EF-23 Exhaust Fan
Loren Cook
240
Cent.
TBD
240
Cent.
The following outlines the responsibilities the Contractor is accountable for with respect to the exhaust fan replacements at this site:
● Contractor shall disconnect and remove the existing exhaust fans serving the facility.
The Contractor is responsible for the removal and disposal of the existing exhaust fans in accordance with local, state and federal regulations, and the Contractor will provide all the necessary equipment, labor, and materials to safely accomplish said removal and disposal. ● Contractor shall furnish and install exhaust fans as per the specifications in the above table. If the Contractor is not able to furnish units meeting the requirements from the above table, the contractor shall recommend other units after consulting with the City. ● Contractor shall ensure that new exhaust fans are programmed to operate with t he existing manual switch and roll up door switch in the paint shop. ● The new units shall have operating efficiencies compliant with 2022 Title 24 minimum efficiency requirements.
18 ● Contractor shall provide all labor, materials, equipment, accessories, etc., required for the design, purchase, delivery, and installation of new exhaust fans. All materials and equipment furnished for this job shall be in current production and shall be of quality material.
Used, shopworn, demonstrator, prototype, reconditi oned, or discontinued equipment or materials are not acceptable.
● The units must be factory packaged and tested according to ARI, ASHRAE, UL, and any other applicable code standards.
● All work shall be performed in accordance with current applicable building , plumbing, electrical, and HVAC codes. The Contractor shall be responsible for obtaining all necessary permits.
● Contractor shall conduct a survey of the existing electrical service and upgrade it to be compatible with the new exhaust fans. Contractor shall analyze the existing electrical service configuration, power, and capacity.
4.2 Testing, Adjustment, and Balancing
Contractor shall ensure that appropriate testing, adjusting and balancing measurements are used to ensure compliance with minimum ventilation requirements per code.
4.3 Implementation Verification
Contractor shall perform functional testing of all the equipment to ensure that the units are operational and control sequences are properly implemented and working per design intent. The Contracto r shall provide a system manual and a detailed commissioning report with all the findings and equipment submittals.
4.4 Measurement and Verification
Contractor shall ensure through measurement and verification that ventilation requirements, cooling and heating loads, and 2022 Title 24 code requirements are met and the recommended sequence of operations are implemented.
4.5 Training
Contractor shall provide necessary training required for the installed controlled system, including maintenance, commissioning, and detailed documentation relevant to training for the City’s reference.
Training documents shall not be considered complete until they are reviewed and approved by the City.
Contractor shall make corrections and transmit the revised submittal for approval.
19