Addendum-3-MMS_Kitchen-WA-25-05-21.pdf

Addendum 3

Client: Mapleton School District

Project: MS Community Kitchen

Date: May 21, 2025

To: Interested Bidder

Prepared by: Curt Wilson, AIA; Principal, Wilson Architecture

This Addendum modifies the Project Manual, Specifications, and Drawings as follows:

1. General Information

1.1. Per Addendum 2, the Bid Opening date is now 5/28/2025 at 2:00 pm.

1.2. The Pre-Bid Meeting was held on 5/8/2025. The meeting sign-up sheet was included in

Addendum 1.

1.3. Addendum 1 was issued on 5/14/2025.

1.4. Addendum 2 was issued on 5/15/2025.

1.5. Potential Prime Bidders

a. Joseph Muller Construction Joe Muller 5mullerconstruction@gmail.com

b. Ordell Construction Erik Stolle estolle@ordellconstruction.com

c. Bridgeway Construction JJ Johansen jjj@bridgewaycontracting.com

d. Proper Built Brad Anderson brad@properbuilt.net

2. Response to Questions

No questions addressed in this addenda.

3. Changes to the Project Manual

3.1. Section 00 0110 – Table of Contents

a. Add “23 8217 Electric Resistance Air Coils” to the TOC.

3.2. Section 08 1416 – Flush Wood Doors

a. Add the attached section to the Project Manual.

3.3. Section – 23 0922 General Automatic Controls for HVAC– -

a. Item 2.7.6.a, modify to read to the following: “Freeze Protection: Activate freeze protection alarm when supply temperature is less than 40°F for more than one minute at supply air temperature sensor. Stop fan and close outside air damper. Automatically attempt re-start three times. If unit stops following third attempt, set and maintain alarm until manually reset.”

• Note, freezestat shutdown protection is being removed and replaced with temperature protected shutdown.

3.4. Section 23 3416 – Centrifugal HVAC Fans

Addendum 3 Mapleton School District

MS Community Kitchen

Wilson Architecture 5/21/2025 Page 2

a. Delete the version of this section issued with the bid documents and replace with the attached version.

3.5. Section – 23 7423 Packaged, Heating-Only Makeup-Air Units

a. Delete section from Project Manual. Note, the Table of Contents was edited for this deletion in Addendum 2.

3.6. Section 23 8217 – Electric Resistance Air Coils

a. Add the attached section to the Project Manual.

4. Changes to the Drawings

4.1. Sheet A329.3 – Roof Plan - SE

a. Add General Note a to read:

“a. NOT ALL NEW ROOF PENETRATIONS SHOWN. REFER TO MEP FOR ADDITIONAL

CONDUIT AND VENT PIPING ITEMS TO BE FLASHED. FLASH WITH MANUFACTURER

APPROVED PIPE BOOT FLASHING.”

4.2. Sheet M311.3 – Mechanical Plan - SE

a. Replace previously issued sheet with the attached sheet. The following items have been addressed on this sheet.

• Revise MAU-1 from packaged unit to assembled filter unit, supply fan, and electric duct heater. MAU-1 will be comprised of built-up system components.

• Clarification: RH-1 installation detail similar to Detail 5, Exhaust Curb – Roof Cap for gravity hood instead of fan.

• Clarification: EF-3 installation detail similar to Detail 5, Exhaust Curb – Roof Cap without damper.

4.3. Sheet M331 – Plumbing and Mechanical Schedule

a. Replace previously issued sheet with the attached sheet. The following items have been addressed on this sheet.

• Delete Makeup Air Unit Schedule. Add MAU-1 to the fans schedule.

• Add Electric Duct Heater Schedule.

4.4. Sheet E311.3 – Electrical Plan – SE

a. Replace previously issued sheet with the attached sheet. The following items have been addressed on this sheet.

• Modify electrical information for HVAC equipment.

4.5. Sheet E330 – One Line Diagram

a. Replace previously issued sheet with the attached sheet. The following items have been addressed on this sheet.

• Modify electrical information for HVAC equipment, multiple locations.

Addendum 3 Mapleton School District

Wilson Architecture 5/21/2025 Page 3

End of Addendum

5. Attachments

5.1. Section 08 1416 – Flush Wood Doors

5.2. Section 23 3416 – Centrifugal HVAC Fans

5.3. Section 23 8217 – Electric Resistance Air Coils

5.4. Sheet M311.3 – Mechanical Plan - SE

5.5. Sheet M331 – Plumbing and Mechanical Schedule

5.6. Sheet E311.3 – Electrical Plan – SE

5.7. Sheet E330 – One Line Diagram

MS Community Kitchen 08 1416

Mapleton School District FLUSH WOOD DOORS

Added 5/21/2025 Add 3 PAGE 1 of 4

SECTION 08 1416

FLUSH WOOD DOORS

PART 1 GENERAL

1.1 SECTION INCLUDES

A. Flush wood doors; flush configuration; non-rated and acoustical.

1.2 RELATED REQUIREMENTS

A. Section 01 2000 – Price and Payment Procedures: Pay application process, change procedures.

B. Section 01 3000 – Administrative Requirements: Submittal review procedures.

C. Section 01 6000 – Product Requirements: Substitution request procedures.

D. Section 01 7000 – Execution and Closeout Requirements: Closeout procedures.

E. Section 08 1113 - Metal Doors and Frames.

F. Section 08 7100 - Door Hardware.

G. Section 08 8000 - Glazing.

H. Section 09 9000 – Painting and Coating: Field finishing of doors.

1.3 REFERENCE STANDARDS

A. ASTM E90 - Standard Test Method for Laboratory Measurement of Airborne Sound

Transmission Loss of Building Partitions and Elements; 2009.

B. ASTM E413 - Classification for Rating Sound Insulation; 2010.

C. AWI/AWMAC/WI (AWS) - Architectural Woodwork Standards; 2014.

D. OSSC - Oregon Structural Specialty Code, latest edition.

1.4 SYSTEM DESCRIPTION

A. System Requirements

1. To provide a higher level of coordination the following building materials must be provided by the same sub-contractor.

a. 08 1113 - Metal Doors and Frames

b. 08 1416 - Flush Wood Doors

c. 08 7100 - Door Hardware

1.5 SUBMITTALS

A. See Section 01 3000 - Administrative Requirements, for submittal procedures.

B. Product Data

1. Submit manufacturer's product data and installation instructions.

2. Indicate door core materials and construction, veneer species, louver, lite kit frame, type and characteristics.

Added 5/21/2025 Add 3 PAGE 2 of 4

C. Shop Drawings

1. Show doors and frames, elevations, sizes, types, swings, undercuts, beveling, blocking for hardware, factory machining, factory finishing, cutouts for glazing and other details.

D. Samples

1. Purpose: Factory finishes applied to actual door face materials.

2. Quantity: (2)

3. Size: 6 in. x 6 in.

E. Quality Assurance Submittals

1. Design data/test reports. Show compliance with specified requirements for the following:

a. Sound-retardant doors and frames; sealed panel tests are not acceptable.

1.6 QUALITY ASSURANCE

A. Qualifications

1. Manufacturer Qualifications: Company specializing in manufacturing the products specified in this section with minimum three years of documented experience.

B. Regulatory Requirements

1. Comply with the applicable requirements of Oregon Structural Specialty Code, latest edition.

1.7 DELIVERY, STORAGE, AND HANDLING

A. Acceptance at Site

1. Do not deliver or install doors until spaces are enclosed and weathertight, wet work in spaces is complete and dry, and HVAC system is operating and maintaining ambient temperature and humidity conditions at occupancy levels during remainder of construction period.

2. Deliver materials in original packages, containers or bundles bearing brand name and identification of manufacturer or supplier.

3. Package, deliver and store doors in accordance with specified quality standard.

4. Accept doors on site in manufacturer's packaging. Inspect for damage.

5. Mark each door on top rail with opening number used on Shop Drawings.

B. Storage

1. Protect doors with resilient packaging sealed with heat shrunk plastic. Do not store in damp or wet areas; or in areas where sunlight might bleach veneer. Seal top and bottom edges with tinted sealer if stored more than one week. Break seal on site to permit ventilation.

1.8 WARRANTY

A. See Section 01 7800 - Closeout Submittals, for additional warranty requirements.

B. Interior Doors: Provide manufacturer's warranty for the life of the installation.

Added 5/21/2025 Add 3 PAGE 3 of 4

C. Include coverage for delamination of veneer, warping beyond specified installation tolerances, defective materials, and telegraphing core construction.

1. Warping (bow, cup, or twist) more than 1/4 in. in a 42-by-84-in. section.

2. Telegraphing of core construction in face veneers exceeding 0.01 in. in a 3-in. span.

PART 2 PRODUCTS

2.1 PRODUCT GENERAL REQUIREMENTS

A. All Doors

1. Quality Level: Custom Grade, Heavy Duty performance, in accordance with

AWI/AWMAC/WI (AWS).

2. See drawings for locations and additional requirements.

B. Interior Doors

1. 1-3/4 inches thick unless otherwise indicated; flush construction.

2. Provide solid core doors at all locations.

3. Wood veneer facing for field opaque (painted) finish .

C. Product and Manufacturer

1. Algoma.

2. Eggers Industries.

3. Haley Brothers.

4. Marshfield Door Systems, Inc.

5. Vancouver Architectural Doors.

6. VT Industries.

7. Western Oregon Door.

8. Substitutions: See Section 01 6000 – Product Requirements.

2.2 DOOR AND PANEL CORES

A. Non-Rated Solid Core and 20 Minute Rated Doors

1. Type particleboard core (PC), plies and faces as indicated.

2.3 DOOR FACINGS

A. Veneer Facing for Opaque Finish

1. Medium density overlay (MDO).

B. Facing Adhesive

1. Type I - waterproof.

2.4 DOOR CONSTRUCTION

A. Fabricate doors in accordance with door quality standard specified.

B. Cores Constructed with stiles and rails:

Added 5/21/2025 Add 3 PAGE 4 of 4

1. Provide solid blocks at lock edge for hardware reinforcement.

2. Provide solid blocking for other thru-bolted hardware.

C. Factory machine doors for hardware other than surface-mounted hardware, in accordance with hardware requirements and dimensions.

D. Provide edge clearances in accordance with the quality standard specified.

PART 3 EXECUTION

3.1 EXAMINATION

A. Site Verification of Conditions

1. Verify that opening sizes and tolerances are acceptable.

2. Do not install doors in frame openings that are not plumb or are out-of-tolerance for size or alignment.

3.2 INSTALLATION

A. Install doors in accordance with manufacturer's instructions and specified quality standard.

B. Use machine tools to cut or drill for hardware.

C. Coordinate installation of doors with installation of frames and hardware.

D. Coordinate installation of glazing.

E. Install door louvers plumb and level.

F. Protect veneer from damage during construction. Do not wedge open doors with any material that might cause the veneer to split or chip.

3.3 FIELD QUALITY CONTROL

A. Tolerances

1. Conform to specified quality standard for fit and clearance tolerances.

2. Conform to specified quality standard for telegraphing, warp, and squareness.

B. Adjusting

1. Adjust doors for smooth and balanced door movement.

2. Adjust closers for full closure.

END OF SECTION

MS Community Kitchen 23 03416 Mapleton School District CENTRIFUGAL HVAC FANS 54/2128/2025, SWE#250017.01 PAGE 1 of 7

SECTION 23 3416

CENTRIFUGAL HVAC FANS

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes:

1. Backward-inclined centrifugal fans.

1.2 ACTION SUBMITTALS

A. Product Data: For each type of product.

1. Construction details, material descriptions, dimensions of individual components and profiles, and finishes for fans.

2. Rated capacities, operating characteristics, and furnished specialties and accessories.

3. Certified fan performance curves with system operating conditions indicated.

4. Certified fan sound-power ratings.

5. Motor ratings and electrical characteristics, plus motor and electrical accessories.

1.3 FACTORY QUALITY CONTROL

A. Vibration: Each fan shall be vibration tested before shipping, as an assembly, in accordance with AMCA 204-05. Each assembled fan shall be test run at the factory at the specified fan operating conditions. Vibration signatures shall be taken on each fan bearing in the horizontal, vertical, and axial directions. The maximum allowable fan vibration level at the design conditions when the fan is rigidly mounted shall be as follows:

1. Motor hp < 0.2: 0.5 in./sec. peak velocity.

2. Motor hp > 0.2 and less than 5.0: 0.2 in./sec. peak velocity.

1.4 CLOSEOUT SUBMITTALS

A. Operation and Maintenance Data: For centrifugal fans to include in normal operation, emergency operation, and maintenance manuals with replacement parts listing.

PART 2 PRODUCTS

2.1 PERFORMANCE REQUIREMENTS

A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.

B. NFPA Compliance: Comply with NFPA 90A for design, fabrication, and installation of unit components.

C. ASHRAE/IES 90.1 Compliance: Applicable requirements in ASHRAE/IES 90.1, Section 6 - "Heating, Ventilating, and Air-Conditioning."

D. AMCA Compliance:

1. Comply with AMCA performance requirements and bear the AMCA-Certified Ratings Seal.

2. Operating Limits: Classify according to AMCA 99.

54/2128/2025, SWE#250017.01 PAGE 2 of 7

2.2 BACKWARD-INCLINED CENTRIFUGAL FANS

A. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

1. Greenheck Fan Corporation.

2. Loren Cook Company.

3. Twin City Blower.

B. Description:

1. Factory-fabricated, -assembled, -tested, and -finished, direct-driven centrifugal fans, consisting of housing, wheel, fan shaft, bearings, motor, drive assembly, and support structure. Deliver fans as factory-assembled units, to the extent allowable by shipping limitations.

2. Factory-installed and -wired disconnect switch.

3. EF-3: UL 705 listed - Supplement SC (Formerly UL-762) - Standard Power Roof Ventilators for Restaurant Exhaust Appliances.

a. UL 705 listed - Supplement SC (Formerly UL-762) - Standard Power Roof Ventilators for Restaurant Exhaust Appliances.

b. Grease Trap, constructed of aluminum, attached to exterior to fan unit.

4. Spark-Resistant Construction: Classified according to AMCA 99, Section 8, Type A.

C. Housings:

1. Housing Material: Aluminum.

2. Housing Coating: None.

3. Panel Bracing: Steel angle- or channel-iron member supports for mounting and supporting fan scroll, wheel, motor, and accessories with welded connections.

4. Housing Assembly: Sideplates continuously welded.

5. Spun inlet cone with flange.

6. Outlet flange.

D. Wheels:

1. SWSI construction with curved inlet flange.

2. Heavy backplate.

3. Backward inclined or as scheduled .

4. Hollow die-formed, airfoil-shaped blades continuously welded at tip flange and backplate.

5. Cast-iron or cast-steel hub riveted to backplate and fastened to shaft with set screws.

6. Wheel and Blade Material: Aluminum.

7. Wheel and Blade Coating: None.

E. Shafts:

1. Statically and dynamically balanced, and selected for continuous operation at maximum rated fan speed and motor horsepower, with adjustable alignment and belt tensioning.

2. Turned, ground, and polished hot-rolled steel with keyway. Ship with protective coating of lubricating oil.

3. Designed to operate at no more than 70 percent of first critical speed at top of fan's speed range.

54/2128/2025, SWE#250017.01 PAGE 3 of 7

F. Bearings:

1. Self-aligning, pillow-block-type, Air Handling Quality, ball or roller bearings with adapter mount and two-piece, cast-iron housing. Bearings shall be 100% tested for noise and vibration by the manufacturer. Bearings shall be 100% tested to insure the inner race diameter is within tolerance to prevent vibration.

2. Bearings shall be fixed to the fan shaft using concentric mounting locking collars.

3. Ball-Bearing Rating Life: ABMA 9, Ll0 at 200,000 hours.

4. Roller-Bearing Rating Life: ABMA 11, Ll0 at 200,000 hours.

G. Direct-Driven:

1. Motor: Permanently lubricated, fully modulating, variable speed, electrically commutated and as scheduled on drawings. Comply with requirements in Section 230513 - Common Motor Requirements for HVAC Equipment.

2. Motor Controller: As scheduled. Comply with requirements in 23 05 14 - Common Motor Control Requirements for HVAC Equipment.

3. Arrangement 8 configuration.

4. Fans shall have flexible coupling with the fan wheel connected to the fan drive shaft.

H. Accessories:

1. Access for Inspection, Cleaning, and Maintenance: Comply with requirements in

ASHRAE 62.1.

2. Scroll Drain Connection: NPS 1 steel pipe coupling welded to low point of fan scroll.

3. Companion Flanges: Rolled flanges for duct connections of same material as housing.

4. Shaft Seals: Airtight seals installed around shaft on drive side of single-width fans.

5. Weather Cover: Enameled-steel sheet with ventilation slots, bolted to housing.

6. Hinge Base:

a. Aluminum hinges.

b. Hinges and restraint cables are mounted to a base (sleeve).

c. Allows the fan to tilt away for access to wheel and ductwork for inspection and cleaning.

I. Acoustic Performance.

1. Sound power levels for fan assemblies shall be established in accordance with AMCA 300 and 310.

2. Sound power levels (db) for assembled unit shall be established by testing or by calculation.

3. Sound power levels for units and components shall not exceed values as scheduled on drawings.

2.3 SQUARE IN-LINE CENTRIFUGAL FANS, MAU-1

A. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

1. Greenheck Fan Corporation.

2. Loren Cook Company.

3. PennBarry.

4. Twin City Blower.

54/2128/2025, SWE#250017.01 PAGE 4 of 7

B. Description: Square in-line centrifugal fans.

C. Housing:

1. Housing Material: Reinforced steel.

2. Housing Construction: Side panels shall be easily removable for service. Include inlet and outlet flanges, and support bracket adaptable to floor, side wall, or ceiling mounting.

3. Insulation:

a. 1-inch- thick, unfaced glass fiber complying with ASTM C 1071 and attached with adhesive complying with ASTM C 916.

D. Fan Wheels: Aluminum airfoil blades welded to aluminum hub.

E. Direct-Drive Units: Motor mounted in airstream, factory wired to disconnect switch located on outside of fan housing.

1. Motor: Permanently lubricated, fully modulating, variable speed, electrically commutated or as scheduled on drawings. Comply with requirements in Section 230513 - Common Motor Requirements for HVAC Equipment.

2. Motor Controller: As scheduled. Comply with requirements in 23 05 14 - Common Motor Control Requirements for HVAC Equipment.

3. Vibration isolation: Neoprene mounting.

F. Accessories:

1. Access for Inspection, Cleaning, and Maintenance: Comply with requirements in

ASHRAE 62.1.

2. Companion Flanges: For inlet and outlet duct connections.

G. Filter and Filter Housing:

1. 2-inch side access holding frame with hinged access door or sliding end plate. Side or bottom opening as required.

2. Filter and air filter frames provided hereunder: Type: F- 1. Comply with requirements in 23 41 00 “Particulate Air Filtration”.

3. Insulation:

a. 1-inch- thick, unfaced glass fiber complying with ASTM C 1071 and attached with adhesive complying with ASTM C 916.

4. Insulated, hinged access panels for filter section.

H. Acoustic Performance.

1. Sound power levels for fan assemblies shall be established in accordance with AMCA

300 and 310.

2. Sound power levels (db) for assembled unit shall be established by testing or by calculation.

3. Sound power levels for units and components shall not exceed values listed below:

54/2128/2025, SWE#250017.01 PAGE 5 of 7

4.

Frequency 63 125 250 500 1000 2000 4000 8000

MAU-1

Fan inlet 78 86 79 72 71 72 72 71

Fan outlet 95 89 79 77 77 75 74 72

Fan radiated 76 81 69 65 63 60 62 61

3.

PART 3 EXECUTION

3.1 INSTALLATION, GENERAL

A. Install centrifugal fans level and plumb.

B. Disassemble and reassemble units, as required for moving to the final location, according to manufacturer's written instructions.

C. Lift and support units with manufacturer's designated lifting or supporting points.

D. Equipment Mounting:

1. Install roof-mounted centrifugal fans on roof curbs or as otherwise detailed on drawings.

Comply with requirements in 23 05 00 - General HVAC Provisions, Roof Curbs.

E. Install units with clearances for service and maintenance.

3.2 DUCTWORK CONNECTIONS

A. Drawings indicate general arrangement of ducts and duct accessories.

B. Install ducts adjacent to fans to allow service and maintenance.

3.3 STARTUP SERVICE:

A. Perform startup service.

1. Complete installation and startup checks in accordance with manufacturer's written instructions.

2. Verify that shipping, blocking, and bracing are removed.

3. Verify that unit is secure on mountings and supporting devices and that connections to ducts and electrical components are complete. Verify that proper thermal-overload protection is installed in motors, starters, and disconnect switches.

4. Verify that cleaning and adjusting are complete.

5. For direct-drive fans, verify proper motor rotation direction and verify fan wheel free rotation and smooth bearing operation.

6. Adjust damper linkages for proper damper operation.

7. Verify lubrication for bearings and other moving parts.

8. Verify that manual volume dampers in connected ductwork systems are in fully open position.

9. Shut unit down and reconnect automatic temperature-control operators.

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

3.4 ADJUSTING

A. Adjust damper linkages for proper damper operation.

B. Lubricate bearings.

54/2128/2025, SWE#250017.01 PAGE 6 of 7

3.5 CLEANING

A. After completing system installation and testing, adjusting, and balancing and after completing startup service, clean fans internally to remove foreign material and construction dirt and dust.

3.6 FIELD QUALITY CONTROL

A. Perform tests and inspections.

1. Fan Operational Test: After electrical circuitry has been energized, start units to confirm proper motor rotation and unit operation.

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

3. Operate fan through full speed control range. Note any frequencies where excessive vibration occurs. Adjust motor controller to remove frequencies with excessive vibration.

4. Fans and components will be considered defective if they do not pass tests and inspections.

B. Prepare test and inspection reports.

3.7 DEMONSTRATION

A. Train Owner's maintenance personnel to adjust, operate, and maintain centrifugal fans.

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MS Community Kitchen 23 8217 Mapleton School District ELECTRICAL-RESISTANCE AIR COILS

5/21/2025, SWE#250017.01 PAGE 1 of 4

SECTION 23 8217

ELECTRIC-RESISTANCE AIR COILS

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes:

1. Electric-resistance air coils.

1.2 ACTION SUBMITTALS

A. Provide submittals for products listed in the Product Table below in accordance with Section 230500 - General HVAC Provisions. Submittal requirements indicated by column number designation as follows:

1. Materials List.

2. Catalog Data.

3. Product Data.

4. Performance Data.

5. Wiring Diagrams.

6. Shop Drawings.

7. Installation Instructions.

8. Special Requirement listed herein.

PRODUCT TABLE 1 2 3 4 5 6 7 8

Electric-resistance air coils x x

1.3 QUALITY ASSURANCE

A. Heaters ETL listed for zero clearance from combustibles, and bear ETL listing mark.

B. Heaters shall meet the requirements of the NEC and UL 1996, Edition 4.

PART 2 PRODUCTS

2.1 PERFORMANCE REQUIREMENTS

A. Coil Assembly: Comply with UL 1995.

B. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by an NRTL, and marked for intended location and application.

C. NFPA Compliance: Comply with NFPA 90A for design, fabrication, and installation of air-handling units and components.

D. ASHRAE 62.1 Compliance: Applicable requirements in ASHRAE 62.1, Section 5, "Systems and

Equipment," and Section 7, "Construction and Startup."

E. Equally balance heater electrical load for each step across all electrical phases.

F. Part-Load Operation: Provide arrangement with operation staged for uninterrupted operation over the full range of airflow down to the minimum airflow indicated.

2.2 ELECTRIC-RESISTANCE AIR COILS

A. Acceptable manufacturers: Greenheck, Indeeco, Markel, Nailor, and E.H. Price.

B. Source Limitations: Obtain electric-resistance air coils from single source from single manufacturer.

5/21/2025, SWE#250017.01 PAGE 2 of 4

C. Heating Elements:

1. Open Elements:

a. Open-coil resistance wire of 80 percent nickel and 20 percent chromium; supported and insulated by floating ceramic bushings recessed into casing openings, fastened to supporting brackets, and mounted in a frame.

b. Safety Screens: Install safety screens to protect operators from accidentally coming into direct connect with elements.

D. Frame: Galvanized steel; minimum 0.064 inch thick for flanged mounting. Include intermediate element support brackets equally spaced at a maximum of 12 inches o.c. across electric-resistance air coil.

E. Terminal Box/Control Panel: Unit mounted; with disconnection means and overcurrent protection.

1. Enclosure: NEMA 250, Type 1 or Type 12 enclosure complying with UL 50.

2. Full-face-hinged door.

3. Factory insulate terminal box to prevent condensation from occurring within box.

4. Install a laminated elementary wiring diagram on inside face of heater control panel door or in another protected location than visible be service personnel. Wiring diagram to match installation.

F. Controls:

1. Safety Controls: Each heater is to be provided with the following factory-mounted safety controls:

a. Disk-type thermal cutout switch with automatic reset.

b. Primary linear thermal limit cutout switch with automatic reset.

c. Secondary linear thermal limit cutout switch with local manual reset.

d. Airflow Proving Switch: Pressure differential type; with pressure range selected to ensure reliable operation throughout full range of air-handling unit airflow down to minimum airflow indicated.

2. Capacity Controls:

a. Staging Control: Magnetic contactors for switching stages of heat.

b. SCR Control: Silicone-controlled rectifier (SCR) for 100 percent stepless capacity control.

3. Remote Monitoring and Control: Include control devices necessary to interface with remote-control signals, including the following:

a. Heater on/off control,

b. Heater capacity control.

c. High-temperature alarm.

d. Low-airflow alarm.

G. Electrical:

1. Single-Point Field Power Connection: Install and wire the heater to accommodate a single field electrical connection for electrical power.

2. Disconnecting Means: Provide each heater with a main electrical power connection, door mounted and interlocking, and disconnecting means to prevent access into panel, unless switched to the off position.

5/21/2025, SWE#250017.01 PAGE 3 of 4

a. Minimum Short-Circuit Current Rating: As required by electrical power distribution system, but not less than 42 KVA.

3. Factory install and wire branch circuit fusing or circuit breakers in accordance with

NFPA 70.

4. Pilot Lights: Include labeled pilot lights on face of control panel for the following:

a. Power on.

b. Low-airflow alarm.

c. High-temperature alarm.

5. Terminations: Wire terminations and field interface terminations to labeled terminal strips.

6. Control Transformer: Size control circuit transformer for load.

7. Labeling: Label each electrical device with a laminated phenolic tag.

8. Use only NRTL-labeled electrical components.

H. Nameplate: Include the following data:

1. Manufacturer name, address, telephone number, and website address.

2. Manufacturer model number.

3. Serial number.

I. Capacity and Characteristics: As scheduled on Drawings.

PART 3 EXECUTION

3.1 EXAMINATION

A. Examine ducts and casings to receive air coils for compliance with requirements for installation tolerances and other conditions affecting coil performance.

B. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 INSTALLATION

A. Install coils level and plumb.

B. Install coils in metal ducts and casings constructed in accordance with SMACNA's "HVAC Duct

Construction Standards, Metal and Flexible."

C. Install duct heater according to installation instructions, wiring diagram, and labeling supplied with the heater.

D. Clean coils using materials and methods recommended in writing by manufacturers, and clean inside of casings and enclosures to remove dust and debris.

3.3 CONTROL CONNECTIONS

A. Install control and electrical power wiring to field-mounted control devices.

B. Install nameplate for each control connection, indicating field control panel designation and

I/O control designation feeding connection.

3.4 FIELD QUALITY CONTROL

A. Manufacturer's Field Service: Engage a factory-authorized service representative to test and inspect components, assemblies, and equipment installations, including connections.

B. Perform tests and inspections with the assistance of a factory-authorized service representative.

5/21/2025, SWE#250017.01 PAGE 4 of 4

C. Tests and Inspections:

1. Operational Test: After electrical circuitry has been energized, operate electric coils to confirm proper unit operation.

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

D. Prepare test and inspection reports.

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B.

C.

DUCT LINER NOT SHOWN FOR CLARITY.

FOR ADDITIONAL DETAIL, DUCTWORK SHALL BE CONSTRUCTED PER

SMACNA HVAC DUCT CONSTRUCTION STANDARDS.

DUCT OFFSETS AND TRANSITIONS MAY CONVERT DUCT PROFILES TO

ANY COMBINATION FOR RECTANGULAR, ROUND OR FLAT OVAL

SHAPES.

D E T A I L G E N E R A L N O T E S : D E T A I L R E F E R E N C E N O T E S :

AIR FOIL

TURNVANE ELBOW

DUCT

OFFSETS ECCENTRIC

REDUCER

BRANCH

CONNECTION

45° ELL REDUCER90° ELL

30° MAX

ROUND DUCT

RECTANGULAR DUCT

SAME R:D

AS 90° ELL

R

30° MAX

15° MAX

30° MAX

OVER 30°

INNER RADIUS

= 6" MIN

TURN VANES

AS SPECIFIED

RADIUS

ELBOW

RADIUS-TO-

WIDTH RATIO

TRANSITION

30° MAX

45° BRANCH

SUPPLY OR RETURN

MANUAL

BALANCING

DAMPER

W / 4

(4" MIN)

RECTANGULAR ROUND

REFER TO SPECIFICATIONS FOR RADIUS-TO-WIDTH RATIO AND

RADIUS-TO-DIAMETER RATIO FOR SPECIFIC APPLICATIONS.

1 A.

B.

C.

DUCT LINER NOT SHOWN FOR CLARITY.

FOR ADDITIONAL DETAIL, DUCTWORK SHALL BE CONSTRUCTED PER

SMACNA HVAC DUCT CONSTRUCTION STANDARDS.

DUCT OFFSETS AND TRANSITIONS MAY CONVERT DUCT PROFILES TO

ANY COMBINATION FOR RECTANGULAR, ROUND OR FLAT OVAL

SHAPES.

1 1

D E T A I L G E N E R A L N O T E S :D E T A I L R E F E R E N C E N O T E S :

(E) SHINGLES

EA DUCT SEE

PLANSFOR SIZE &

LOCATION

STRUCTURAL FRAMING AS

REQUIRED. SEE

STRUCTURAL.

COUNTER FLASHING ROOF

SHINGLES & FELT FLASHING

PLYWOOD ROOF

DECK

CONDUIT BY ELEC.

CONTR.

CURB BY EF

MANUFACTURER

DAMPER ACTUATOR

WHERE REQUIRED

DAMPER

TRAY FILTER

OUTSIDE

AIR

SUPPLY

AIR

T

POWER

ECM

DI

R C

DO

SUPPLY FAN

AO

A

ELECTRIC HEATING

AO NETWORKED

THERMOSTAT

T

WALL SWITCH

INPUT

MAX 36" FLEXIBLE DUCT

AI

RESIDENTIAL

RANGE

RESIDENTIAL HOOD

ASSEMBLY.

VERIFY

INSTALLATION

HEIGHT WITH

ARCHITECT

(E)

WALL

(E) ROOF

STRUCTURE

(E)

WINDOW

DROP CEILING

ROOF CAP(E)

SHINGLES

EA DUCT SEE

PLANSFOR LOCATION

PROJECT: 25031

MS Community Kitchen Mapleton School District

Construction Documents

REVISIONS:

CHECKED:

DATE: 4/28/2025

wilson-architecture.com | 541-912-0878

CW1Mechanical Plan

SE

Mechanical Plan - SE

a. INSTALL EXHAUST FAN EQUIPMENT MIN 10' FROM ROOF

EDGE.

b. PROVIDE 8” EXHAUST DUCT FROM RANGE HOOD UP TO

ROOF DISCHARGE. PROVIDE RANGE HOOD ROOF OUTLET,

PER SECTION 23 0500 AT ROOF DISCHARGE. SEE

ARCHITECTURAL FOR RANGE HOOD AND LOCATION

Middle School

8'4'2''0'

1/4" = 1'-0"

ROOM 3

KITCHEN

ROOM 4

PRODUCE

ROOM

LOUNGE

H5

SE HALL

RR

CLOSET

JAN

H2

SOUTH HALL

H1

MAIN HALL

SWS

SWS

7∅ RA

(E) U-2A HEAT PUMP

TO REMAIN

(E) 24x18 RA

U-2A

SA

REPLACE (D) 6∅ DUCT WITH 14∅ DUCT

SD-1

1000 CFM

REMOVE RA GRILLS &

DUCTWORK IN CABINET

(E) SD-1

425 CFM

(E) 16x6 SA

(E) SD-1

425 CFM

EHC-1

20x18 OSA

20x18 UP TO

ROOF HOOD,

RH-1

26x14 SA

SD-1 625

CFM

SD-1 625

CFM

SD-1 625

CFM

SD-1 625

CFM

(E) 18x10 SA

SA

SA

(D ) 16x6 SA

14"∅ EA TEMPORARY

DUCT WITH 1000 CFM

EG-1 & DAMPER.

8x8 EA UP

TO EF-1

(E) SD-1

150 CFM

12x12 EA UP

TO EF-2

12∅ EA

EG-1

1000 CFM

EA

EG-1

150 CFM

TYPE 2 EXHAUST HOOD 600

CFM. ROUTE UP THROUGH ATTIC

SPACE TO ROOF DISCHARGE.

(D ) 6

SA

2Diffuser Grille & Register Connection Diagram3Duct Construction

Diagram4MAU Control Diagram5Exhaust Curb - Roof Cap

Diagram

APPROXIMATE LOCATION

OF DRAFT STOP

ATTIC ACCESS

(D ) 1

6x

SAREMOVE (E)

GRILL & DUCT

WORK FROM

ATTIC SPACE

W W

W

D

NTSNTSNTSNTS

26x14 SA DN THROUGH ATTIC

FLOOR. CONTINUE ROUTING DUCT

IN FIRST FLOOR CEILING SPACE. RG-1

800 CFM12

x1

R A

(E) OSA UP THROUGH ROOF

RESIDENTIAL RANGE

HOOD SEE 1/A321.3

14x14 EA

UP TO EF-3

12∅ SA 12∅ SA

CENTER EXHAUST DUCT/DROP

FOR CONNECTION ON CENTER

OF HOOD.

MAU-1

RELOCATE EXST

THERMOSTAT TO

WALL IN ROOM 4

ADD 2

ADD 2 - 5/15/2025

PTP = HARDWIRED POINT TO POINT

MAU CONTROLS

Name PT

Type PT Comm.

SUPPLY FAN STATUS DI PTP

OUTSIDE AIR DAMPER COMMAND DO PTP

SUPPLY AIR TEMPERATURE AI PTP

SUPPLY FAN SPEED AO PTP

PLENUM LOW PRESSURE DI PTP

ELECTRIC HEAT OUTPUT AO PTP

HEAT AIRFLOW SWITCH DI PTP

ADD 2

6Residential Range Hood DiagramNTS

NOTE: SEE 3/A362 FOR

CRICKET DETAIL.

ADD 2

MAU-1

450 LBS MAX WEIGHT FOR

FAN, HEATING COIL, FILER

HOUSING AND AUTOMATIC

DAMPER.

FILTER HOUSING 24x24 SA

ADD 3

ADD 3

ADD 3 - 5/21/2025

E

X

P

I

R

E

S : 12

J

A

N

1, DIGITALLY SIGNED

RE

GI

STERED PROFESSIONALENGINEER# 59,544

OREGONP

A

U L

E . F O O

K S

PROJECT: 25031

Mapleton School District

Construction Documents

REVISIONS:

CHECKED:

DATE: 4/28/2025

wilson-architecture.com | 541-912-0878

E

X

P

I

R

E

S : 12

J

A

N

1, DIGITALLY SIGNED

RE

GI

STERED PROFESSIONALENGINEER# 59,544

OREGONP

A

U L

E . F O O

K S

E X X

E X

X X

X

DW

DWB

DWH

I

EF3

EF1

RH1

EF2

T

T

DUPLEX OUTLET MOUNTED AT +18"

UNLESS OTHERWISE NOTED

DATA PORT

X

E

EXST OUTLET TO REMAIN

EXST DUPLEX TO BE REMOVED

POWER

X

EXST FOURPLEX TO BE REMOVED

EF1

BRANCH CIRCUIT PANEL

EXHAUST FAN ELECTRICAL CONNECTION

AND DISCONNECT SWITCH

J

DISCONNECT SWITCH

MOTOR CONNECTION

JUNCTION BOX FOR EQUIPMENT

CONNECTION

RANGE OUTLET NEMA 5-50R

CW1Electrical Plan

SE

Electrical Plan - SE

Middle School

8'4'2''0'

1/4" = 1'-0"

PROJECT: 25031

MS Community Kitchen Mapleton School District

Construction Documents

REVISIONS:

CHECKED:

DATE: 4/28/2025

wilson-architecture.com | 541-912-0878

E311.3

ROOM 3

KITCHEN

ROOM 4

PRODUCE

ROOM

LOUNGE

H5

SE HALL

RR

CLOSET

JAN

H2

SOUTH HALL

H1

MAIN HALL

H4

NE HALL

SWS

SWS

0.

E2

3.

E1

120.E4

120.1

120.E310 4.

E1

6.

E1

8.

E1

9.

E1

H5.E1114.E1

5.

E1

H 4.

E1

ROOM 2

102.E1

STORAGE

BOILER BLDG

ROOM 4

103.1

4.

E2

ROUTE NEW FEEDER TO

PANEL K IN ATTIC SPACE.

NEW 300/3 ENCLOSED

CIRCUIT BREAKER TAP

SWITCHBOARD BUS TO

FEED NEW BREAKER.

EXISTING 800 AMP MAIN

DISTRIBUTION PANEL.

NEW PANEL K

K-17

K-15

K-13

GFI

K-29 K-27

K-25

K-25

K-23

+42"

TRAP

PRIMER

OUTLET

K-23

K-21

GFI

+42"

GFI

TRAP

PRIMER

OUTLET

K-21

GFI

K-21+42"

K-21 +42"

GFI

K-19 K-19

GFI GFI

K-14

K-17K-19

K-7

K-20:22:24

K-8:10:12 J

J

K-2:4:6

J K-1:3:5

LEGEND - ELECTRICAL PLAN

K-33:35:37

U-2A

MAU-1

1400 LBS

K-9:11 R1

FIELD VERIFY LOCATION OF EXST

SURFACE MOUNTED DATA

DEVICE AND CABLING. DEMO IS

WITHIN 6" OF NEW WOOD TRIM.

TERMINATE ABOVE THE CEILING.

ADD 2

ADD 01 - 5/14/2025

ADD 2

ADD 2

K-16

ADD 2

GFI

TRAP PRIMER OUTLET

K-21

ADD 2

EXP 6/30 /2025

James Krumsick jacky Rectangle jacky Snapshot jacky Snapshot jacky Rectangle jacky Typewritten Text K-26:28:30 jacky Ellipse jacky Line jacky Line jacky Cloud jacky Snapshot jacky Typewritten Text jacky Text Box

ADD 03 - 5/21/2025

ADD 02 - 5/15/2025

CW1One Line Diagram One Line Diagram

Middle School

PROJECT: 25031

MS Community Kitchen Mapleton School District

Construction Documents

REVISIONS:

CHECKED:

DATE: 4/28/2025

wilson-architecture.com | 541-912-0878

E330

NTS

ADD 1

ADD 01 - 5/14/2025

ADD 2

ADD 2

ADD 2

ADD 2

ADD 2

ADD 2

ADD 2

K-20:22:24

AVAILABLE FAULT

CURRENT: 24,706 AIC

AVAILABLE FAULT

CURRENT: 52,600 AIC

1/2"C 3#12, #12GExhaust Fan for Future Hood D 2

BUSSING SHALL BE RATED FOR 22,000 AIC. BREAKERS SHALL BE SERIES

RATED WITH UPSTREAM 300 AMP FEEDER BREAKER FOR THE AVAILABLE

FAULT CURRENT AT THAT BREAKER: 24,706 AIC

Future Cooking Exhaust Hood

Room 4 Receptacle

EXP 6/30 /2025

James Krumsick jacky Text Box

ADD 03 - 5/21/2025

ADD 02 - 5/15/2025

jkrum Image jkrum Image jkrum Image jkrum Image jkrum Cloud jkrum Cloud jkrum Cloud jkrum Cloud jkrum Snapshot jkrum Snapshot jkrum Snapshot jkrum Snapshot jkrum Typewritten Text jkrum Typewritten Text jkrum Typewritten Text jkrum Typewritten Text jkrum Typewritten Text jkrum Typewritten Text 41 KW -Connection 1

6.5 A - Connection 2

jkrum Typewritten Text K- 31:33:35 K- 26:28:30 jkrum Typewritten Text 1 1/2" C. 3 #1/0 # 2 G 1/2" C. 3#12, #12 G jkrum Cloud jkrum Typewritten Text jkrum Snapshot jkrum Typewritten Text jkrum Typewritten Text

PROVIDE ELECTRICAL CONNECTION

TO EACH DISCONNECT SWITCH

DISCONNECTS PROVIDED WITH UNIT

jacky Image