11-Attach C - EC Detailed Scope of Work.docx

PROJECT: Whittier Elementary HVAC Electrification - Electrical

DOCUMENT: Attachment C: EC Detailed Scope of Work

1. PROJECT SUMMARY & OVERVIEW:

Salt Lake City School District (SLCSD)’s sustainability action plan commits the District to achieving 100% renewable energy by 2030 and 100% carbon neutrality by 2040. The District has selected McKinstry as their design-build partner in their decarbonization journey, and together SLCSD and McKinstry have completed multiple phases of work touching lighting, solar PV, building controls optimization, weatherization, electric vehicle fleet management, and building electrification retrofits. Supported by a bond passed in 2024, the District is now engaged in the completion of an additional electrification retrofit project at Whittier Elementary School in Salt Lake City, Utah.

To support the District’s sustainability action plan, McKinstry is requesting proposals for the implementation of a building electrification retrofit at Whittier Elementary School. The basis of design for the building electrification is to install a central ground source heat pump (GSHP) unit at the school to replace existing heating and cooling systems. The GSHP systems are designed to meet 100% of the cooling load in the building, and approximately 80% of the heating load.

The scope of work described in this RFP includes the Electrical scope of work associated with the HVAC retrofit work to be completed at the school. The overall scope of work for the project includes Mechanical retrofit work inside the building as well as the installation of the ground loop bore field outside the building. Subcontractors responding to this RFP should include all required trades for the line voltage electrical components of the project. Piping, insulation, mechanical equipment, controls, TAB, etc. work shall be provided through a separate RFP. The drilling, earthwork, and installation of the ground loop system will also be priced through a separate RFP. Please refer to the construction documents and project specifications included with this RFP for detailed equipment and material installation requirements.

2. GENERAL

A. Site altitude: Equipment shall be sized and rated for specified performance at site altitude of 4,220’ ASL.

B. Supplemental Documentation: The following documents support this Scope of Work and shall be considered part of McKinstry’s requirements. Where discrepancies exist among referenced documents, the more stringent shall apply.

1) Salt Lake City School District Standard Terms and Conditions for Goods and Services (Attachment A)

2) Codes as adopted by the State of Utah and Salt Lake City

(i) 2021 International Building Code

(ii) 2021 International Existing Building Code

(iii) 2021 International Plumbing Code

(iv) 2021 International Mechanical Code

(v) 2021 International Fuel Gas Code

(vi) 2021 International Energy Conservation Code

(vii) 2023 National Electric Code

3) Industry Standards (Latest edition, unless noted otherwise)

(i) NEBB Procedural Standards for Testing, Adjusting, and Balancing of Environmental Systems

(ii) SMACNA HVAC Duct Construction Standards, Metal and Flexible

(iii) National Fire Protection Association Standards (NFPA)

4) Reference Drawings and Specifications

(i) Attachment D – Drawings & Specifications

a) Google Drive Link: https://drive.google.com/drive/folders/1zwZ2esKiR96fCUxv0Ywx6PGv_vaBulFO?usp=sharing

3. MECHANICAL

A. By Others

4. GEOTHERMAL

A. By Others

5. STRUCTURAL

A. By Others

6. CONTROLS

A. By Others

7. ELECTRICAL

A. Safety

1) No live electrical work shall be performed at any time for any reason without documented written approval from McKinstry.

2) Proper lock out – tag out procedures shall be followed including full PPE until circuit is tested and confirmed to be dead.

B. General Scope: Electrical work to support the removal and replacement of pumps, boilers, VAV boxes, and controls as well as the installation of new GSHP unit and associated equipment.

C. Delineation of Responsibilities

1) Electrical subcontractor to be responsible for complete electrical demolition of existing line-voltage equipment, materials, accessories, and other associated requirements indicated for removal in the supporting Project Drawings and Specifications.

2) Electrical subcontractor to be responsible for complete electrical installation of line-voltage equipment, materials, accessories, and other associated requirements indicated in supporting Project Drawings and Specifications.

3) Mechanical Subcontractor shall be responsible for all low-voltage control wiring between and among mechanical components and controls panels unless otherwise noted.

4) Mechanical subcontractor shall coordinate with McKinstry superintendent, electrical subcontractor, and all other relevant trades as work progresses to provide for a complete and functional installation of all mechanical equipment called for within drawings and specs per this RFP.

D. General circuiting requirements

1) Unless otherwise specified, similar loads may be combined on a common circuit as permitted by current NEC.

E. Electrical panels and disconnects serving mechanical equipment shall comply with the service clearance requirements of the NEC. SUBCONTRACTOR shall furnish and install remote mounted panels and disconnects where required by the NEC.

F. Demolition and make safe:

1) Remove existing power disconnect, variable speed drive (if present) and associated conduit, conductors, and electrical devices and support/anchoring devices.

(i) Disconnect and safe off power to equipment for demolition.

G. New Work:

(i) Provide and install new safety disconnect, circuit breakers, conduit, wiring, and supports for new equipment.

(ii) Provide and install new variable speed drives (as indicated in drawings and project specifications).

(iii) Provide and install new safety disconnect, circuit breakers, conduit, wiring, and supports for all equipment located in Ground Loop header vault (as indicated in drawings and project specifications for Ground Loop Heat Exchanger)

8. DESIGN

A. McKinstry shall be responsible for Mechanical, Structural, Ground Loop Heat Exchanger, and Electrical Design for the scope of work. SUBCONTRACTOR shall work with McKinstry engineers to verify equipment location, mounting and isolation details before installation.

9. COMMISSIONING

A. Commissioning to be by Others.

B. Please refer to the Controls Commissioning Roles and Responsibilities attachment for SUBCONTRACTOR commissioning coordination requirements.

10. TRAINING

A. SUBCONTRACTOR shall provide training, as required, for Scope of Work herein.

11. SUBMITTALS AND SCHEDULING

A. SUBCONTRACTOR is liable for damages to McKinstry for Subcontractor’s sole failure to coordinate schedule and/or meet agreed upon durations and completion dates.

B. SUBCONTRACTOR acknowledges that associated work is taking place on this project site concurrently with this scope.

C. Provide coordination drawings as requested by McKinstry.

D. Provide as-built drawings as requested by McKinstry.

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