St. Monica Food Pantry Walk-In Cooler Freezer System SBA-13105

Transcription

1 St. Monica Food Pantry SECTION WALK-IN COOLER/FREEZER SYSTEM PART 1 - GENERAL 1.1 SCOPE OF WORK: A. All equipment specified for one Walk-In Cooler/Freezer to be delivered to job site, uncrated, freight prepaid, assembled and set in proper area, where shown on Drawings; ready for final connections, where required, as specified in Division 22 and Division DESCRIPTION: A. The extent of the Walk-In Cooler/Freezer System as shown on drawings and specified herein. B. The plans indicate the location of the equipment. Slight changes due to the varying dimensions of equipment and wall construction will be permitted with approval by Architect. C. Conflict in plans and specifications where changes, alterations, additions, or deductions are necessary, or where exceptions are taken by the Contractor with regard to sizes, locations and other details shown on Plans shall be reported in writing for decision by the Architect. D. Contractor is responsible for seeing that the equipment can be entered through openings before doors and walls are finished. E. Contractor is to have a competent Walk-In Equipment foreman on the premises to assist in furnishing information to proper trades-persons on project and supervising of Walk-In Unit installation under this section. 1.3 QUALITY ASSURANCE: A. Permits and Certificates: All laws, codes, ordinances and regulations bearing on the conduct of the work as drawn and specified to be complied with by the Contractor and he will give all notices required. Any work upon which an Inspection Certificate by local authorities, and any governing body is required, such Inspections Certificate or certificates will be obtained by the Contractor and be paid by him. B. All accessories shall be provided, whether specified or not, with equipment in order to comply with all governing codes. C. Walk-In manufacturer will have received UL Seal of Approval and Factory Mutual's test approval for low CFC foam construction, and manufacturer will submit sample of approved Certificates for verification. D. The drawings indicate the desired basic arrangement and dimensions of the equipment. Minor deviations may be substituted for approval provided basic requirements are met and no major rearrangement of service to the equipment is required to affect the proposed alteration; such deviations will be made without expense to the Owner.

2 St. Monica Food Pantry E. Operational and functional tests of the installed equipment is required. Defects or deficiencies noted as a result of tests will be corrected to the satisfaction of the Architect or Owners at the expense of the Contractor. Consult the mechanical and electrical connections drawings and their accompanying specifications to determine additional requirements for the installation of the specified Unit. F. Verify with Mechanical and Electrical plans for electrical voltages, cycles, phases, and special requirements before ordering equipment. 1.4 SUBMITTALS: A. Shop Drawings: Submit shop drawings to the Architect for approval. Shop Drawings will show details and dimensions for installing unit on floor, where shown on Drawings. At the same time, submit data on all accessories and special items that will be provided with Walk-In Unit. B. Plans are generally diagrammatic, and do not show every fitting and detail. Install lines, piping, and equipment in accord with recognized good practice for an approved installation. Avoid conflict with other work and make adequate provisions for the prevention of excessive noise or vibration. C. Arrange and fit equipment into the available spaces to assure that working parts are accessible for service and repair. 1.5 HANDLING AND STORAGE: A. Protect metal finishes from damage during shipping, storage, handling, installation and construction of other work in the same spaces. Wrap and crate each item of equipment as needed for protection from damage. B. Cover exposed stainless steel surfaces with self-adhesive protective paper, of a type recommended by the metal manufacturer; and do not remove until work is installed and ready for cleaning and start-up. 1.6 SCHEDULING: A. Schedules and Reports: Establish earliest and latest job site delivery dates of Owner-furnished and Contractor-installed items. 1.7 WARRANTIES: A. Walk-In Cooler/Freezer Unit will be guaranteed for a period of ten years after final approval of Architect, against poor workmanship and defective materials. Any defect within this period will be corrected at no charge to Owner. B. Compressors and coils will have a one year free service on parts and labor warranty and guarantee, and an additional four years warranty on the compressors. 1. On extended compressor warranty, only labor charges after first year shall be paid. C. Assign extended warranties to Owner at the end of first year, on all equipment having more than one year warranty from Manufacturer.

3 St. Monica Food Pantry PART 2 - PRODUCTS 2.1 WALK-IN COOLER/FREEZER UNIT: A. Acceptable Manufacturers: 1. Basis-of-design; U.S. Cooler, Walk-in Combination Cooler and Freezer Unit. 2. Bally Refrigerated Boxes, Inc. 2. Kolpak. B. Size and configuration: 1. Walk-in cooler and freezer overall size: 16'-0" long x 8'-0" wide x 7'-6" high. 2. Configuration: As shown on Drawings, the Cooler/Freezer Unit shall be partitioned into compartments, size and shape as designed. 2.2 PANELS: A. Panel Characteristics: 1. General: Each panel shall consist of inner and outer metal skins, a 4" insulation core, and be equipped with cam-action locking devices. The locking devices shall be operable from inside the walk-in. Cam plug buttons are provided to cover the holes after assembly is complete. Construction shall be as approved by the NSF International and shall bear the NSF Seal of Approval. All panels shall be connected to one another by placing the tongue of the insulation core of one panel into the groove of the core insulation of the adjacent panel. The resultant tongue and groove joint shall be sealed at both sides by double barreled NSF approved gaskets. In order to avoid future swelling and mold formation, no wood shall be permitted in the manufacture of the tongue and groove panel profile. 2. Metal Skins: Consist of interior and exterior metals skins foamed with steel and dies and roll-form equipment and thoroughly checked with gauges for accuracy. a. Exterior Finish: 26 gauge stucco-embossed Galvalume steel. b. Interior Finish: 26 gauge stucco-embossed Galvalume steel. 3. Insulation: a. Cooler: Extruded polystyrene, manufactured in an HFC and CFC free process. 4" thick, high quality, rigid extruded polystyrene, 1.6 lb density, modular panels joined by not less than three (3) cam-lock devices; gasket to seal between panels; R-28 or greater for refrigerators. b. Freezer: All wall insulation shall be 4" thick, high quality, rigid, extruded polystyrene, 1.6 lb density. K factor of not more than.125 and an R factor of no less than 8.1 per inch, initial fresh R-32.4 minimum total wall R factor. Vapor transmission shall be less than 1 perm and foam core material must meet UL 5 flame spread rating with average smoke rating less than 165 (UL 723 test).

4 St. Monica Food Pantry c. Ceiling insulation: 1) Cooler: All ceiling insulation shall be 4" thick, high quality rigid extruded polystyrene, 1.6 lb density. K factor of not more than.139 and an R-factor of not less than 7.2 per inch, initial fresh R-28.8 minimum total wall R factor. Vapor transmission shall be less than 1 perm and foam core material must meet UL 5 flame spread rating with average smoke rating less than 165 (UL 723 test). 2) Freezer: All ceiling insulation shall be 4" thick, high quality, rigid, extruded polystyrene, 1.6 lb density. K factor of not more than.125 and an R factor of no less than 8.1 per inch, initial fresh R-32.4 minimum total wall R factor. Vapor transmission shall be less than 1 perm and foam core material must meet UL 5 flame spread rating with average smoke rating less than 165 (UL 723 test). 4. Panel Thickness: 4". C. Floor Construction: Walk-in Combination Cooler and Freezer Unit is to be installed on floor in locations indicated, as detailed on Drawings. Supply a vapor barrier between slab and prefab floor. 1. Cooler is floorless: Floor screeds shall be provided for all floorless walk-in coolers. The screeds shall be vinyl, and have NSF approved cove both inside and out. 2. Freezer floor panels: 4" thick reinforced insulated floor panels with nonconductive structural imbeds for maximum strength without freezing. a. Prefabricated freezer floor panels must have R-28 rating or greater; allowable load of 600 pounds per sq. ft. when placed on a continuous concrete slab, reinforced floor panels for larger loads are available; verify that building is transit level prior to installing walk-ins; notify Owner and Architect if sub-floor ventilation or heating is required for walk-in freezers; Dealer or Consultant to verify that sub-floor installation conditions are acceptable prior to installing floor and box. b. Floor Panel Finish: 22 gauge stainless steel finish interior and 26 gauge stucco-embossed Galvalume. 2.3 DOORS: A. Hinged Entrance Door Panels: 1. Number of doors: One (1) for each coolers. 2. Quantity: Two (2). 3. Door Size: 34" wide x 7'6" high. 4. Cooler doors: Medium temperature inside without floor. R-25 or greater. a. Door shall be flush mounted, positioned and hinged; provided with suitable sweep and magnetic gaskets, door closer, one pre-wired vapor proof light fixture, light switch with pilot light, dial thermometer, manual internal lock override, chrome plated cam lift hinges, chrome plated door latches with strike. b. Outdoor Units: Doors on outdoor walk-ins shall have weather protected light switch and door drip cap. c. Hinges: One cam-lift spring assisted self-closing hinge and one cam-lift hinge. d. Handle: Kason or Component equivalent with steel reinforced plate inside door panel, pull door handle with cylinder lock, padlock hole and interior safety release; provide common key for all walk-in doors.

5 St. Monica Food Pantry e. Door Closer: Kason or spring assisted comparable. f. Incandescent Light Single Light Fixture g. Electrical: Wire surface mounted on door panel to junction box top of door. h. Thermometer: See item specification for thermometers required for this project: Thermometer installed flush-mount on hinge side of door panel. i. Digital Thermometer (optional): 3" round digital thermometer with probe, installed flush-mount on hinge side of door panel. j. Pressure Relief Port: Provide heated relief port in freezers, non-heated relief port available upon request for refrigerators; located in exposed wall. 4. Door swing: As designated on drawings. 5. Doors are infitting and flush mounted. B. Hardware: 1. Two spring-loaded, self-closing hinges. 2. Cylinder latch with provision for padlocking and safety release mechanism. 3. Door closer. 4. Finish: Satin aluminum. C. Freezer doors: Low temp inside, with floor. R-32 or greater. Freezer doors shall be identical to cooler doors, but with the addition of UL approved heater wire on all four sides. Freezer doors shall include a heated pressure relief port in the adjacent panel. 2.4 CONDENSER AND EVAPORATOR UNITS: A. Refrigeration System: Complete operating system consisting of a condensing unit and a evaporator coil. Condensing units will be completely factory assembled, piped, wired, tested, and run-in. 1. Cooler: a. Condensing unit: Russell, RLH055M44D. b. Evaporator coil: Russell, AA18-53B-AE. c. Refrigerant: R404A. 2. Freezer: a. Condensing unit: Russell, RLH215L44-1. b. Evaporator coil: Russell, AE26-92B-DE. c. Refrigerant: R404A. B. General: Condenser fan motors of under 1 h.p. must use electronically commutated (EC) motors or permanent split capacitator-type (PSP) motors; splash lubrication system using Mobil EAL Arctic 22 polyester synthetic refrigeration oil; oil sight glass; removable oil drain plug; label indicating oil used; high/low pressure control; suction line filter; suction and discharge service valves and copper/brass vibration isolators; receiver with fusible plug or relief valve; liquid line shut-off valve; sight glass; molecular sieve filter dryer; main power supply fused disconnect switch 1. Air-Cooled: Air-cooled condenser with ball-bearing permanently lubricated fan motor.

6 St. Monica Food Pantry Outdoor: Weather proof housing; crank case heater and low ambient temperature controls required to insure proper and efficient operation; fan cycling controls where ambient temperatures do not fall below -15 ; head master valve and oversized, heated, insulated receiver and lines where ambient temperatures fall below -15 F. C. Evaporator Coil: Forced convection style; match to condensing unit and suspend with air discharged parallel to the ceiling; lifetime sealed motors with inherent motor protection; evaporator fan motors of under 1 hp and less than 460 volts must use electronically commutated (EC) motors; enclose coil section and fans within aluminum housing 1. Refrigerator: Air defrost 2. Freezer and Low Temperature Refrigerator: Electric heater and controls for positive automatic defrost 3. Installation: Hang using plastic or nylon fasteners; spread coil weight evenly over ceiling panels; support long span ceiling panels as required. PART 3 - EXECUTION 3.1 INSTALLATION: A. Provide on-site operational and functional testing of specified equipment. Testing and initial operation of this equipment will be supervised by a qualified representative of the refrigeration system manufacturer. Defects or deficiencies will be corrected to the satisfaction of the Architect and/or Owner, at Contractor s expense. 1. Certificate shall be filed with Architects certifying that equipment is operating based on manufacturer's recommendations. Contractor shall coordinate the performance of these services, and both the manufacturer's representative and Contractor shall sign certificate. B. On completion of installation and testing, remove all packaging and debris from site, clean all items of equipment as recommended by manufacturer and leave equipment ready for use by Owner. C. Refrigeration Systems package shall be set on pad located where shown on Architectural Drawings. Verify location from Drawings. D. Provide junction boxes, one for each unit section, as shown on Drawings to connect service for lights and heater cable. Project Electrician will make connections from electric panels to control panel on compressors and to respective junction boxes. E. Provide control wiring between evaporator units, compressor units, and related control items. Wiring and conduits sizing shall conform to the requirement of The State of Georgia Electric Code. F. Conduits, wiring and refrigerant lines will be concealed within walls, ceilings, and floors of building. End of Section