COOK CO ES Walkin FREEZER.doc

REPLACEMENT WALK-IN FREEZER SPECIFICATIONS

Cook County Elementary School Cook County Schools Bid for a walk-in cooler at Cook Elementary School, 1512 N. Elm St., Sparks GA 31647. The brand is a Thermo-Kool or preapproved equal by the school nutrition director. There is a mandatory pre bid site visit being held on 1/21/2026 at Cook Elementary School at 1:30 PM. The deadline to send me your bid is Friday, 2/20/2026.

GENERAL SPECIFICATIONS:

The THERMO-KOOL walk-in specified shall be prefabricated modular construction. It shall be designed and constructed to allow fast and easy field assembly, disassembly, relocation and enlargement by the addition of like modular panels. Walk-in shall be designed and constructed as shown on the plan. The overall exterior size of the walk-in freezer shall be approximately 34 ft 7 in x 13 ft 6 in x 9 ft 2 in ht. (O.D.) to fit exact job site requirements. All measurements must be field verified prior to construction by vendor.

PANEL CONSTRUCTION:

Wall and ceiling panel widths shall be within 1" increments up to 48" wide. Corner panels shall be 90-degree angle, 12" x 12". All panels shall be interchangeable with like panels for fast and easy assembly.

All panels shall consist of metal pans formed to precise dimensions. Exterior finish of unexposed panels to be galvanized steel. Exterior finish of exposed front panels to be Stucco Aluminum. The interior finish to be Stucco Aluminum walls and Pre-painted White Stucco Aluminum on the ceiling panels.

Insulation shall be "foamed-in-place" urethane to bond permanently to complete inner surfaces of both interior and exterior metal pans to form strong rigid unit. Panels shall not have internal wood or metal support, framing, straps, or other non-insulating members. Each panel shall be 100% urethane foam insulation exclusive of metal pans. Perimeter structure shall be formed of DURATHANE, high density urethane insulation forming tongues and grooves to assure vapor and airtight joints and to prevent pre-installation damage and deterioration of exposed urethane surfaces.

WARRANTY:

Panels shall be covered by a Ten-Year Factory Warranty.

INSULATION:

Insulation shall be 4" thick rigid, zero ozone depleting HFC 134a blown Class I urethane foam classified according to UL 723 (ASTM-E-84) as tested by Underwriters Laboratories, Inc. The core material has a flame spread of 25 or less and a smoke density of 250.

The urethane foam is foamed-in-place to bond to inner surfaces of metal pans having an average thermal conductivity (K factor) of 0.13 BTU/hr./sq. ft. per degrees /Fahrenheit/inch. As tested in accordance with ASTM C 518-2004, the R factor for coolers at temperatures of 55 degrees F is greater than 29.0 for 4" thick panels, freezers at temperatures of 20 degrees F the R factor is greater than 32.0 for 4" thick panels.

The prefabricated urethane foamed panels shall be supplied with a Class I fire hazard classification according to UL 723 (ASTM-E-84) as tested by Underwriters Laboratories, Inc. Panels shall have a flame spread rating of 25 or less and bear a certifying Underwriters Laboratories, Inc. label.

This rating is not intended to reflect hazards presented by this or any other material under actual fire conditions

PANEL LOCKING ASSEMBLIES:

Assembly of walk-in shall be accomplished by "Insta-Loks" consisting of cam-action hook arm assembly set in one panel and a self-aligning, self-centering, pin assembly set in the matching panel. All vertical joints must have a minimum of three Insta-loks. Rotation of the cam-action hook arm shall pull and lock panels together to form airtight, vapor proof joints. No metal straps or connecting rods shall be used inside the panels. Rotation of the cam-locks shall be operated from inside the walk-in through access ports that are sealed with vinyl snap-in closures.

PANEL GASKETS:

NSF listed double-bead vinyl gasket shall be applied to the tongue side of all panels, on both interior and exterior. Gaskets shall be impervious to stains, grease, oils, mildew, sunlight, etc.

ENTRANCE DOOR AND FRAME:

Walk-in freezer compartment shall be equipped with a 36" x 76" hinged-type, flush-mounted entrance door and located in location as shown on drawing. Door placement shall be within 1" increments to meet shelving space and job site requirements. Doors shall be manufactured to accommodate floor construction. Door and frame shall be listed by Underwriters Laboratories and bear the UL Seal of Approval and be equipped with the following:

Door shall be equipped with a one-piece perimeter PVC accordion type removable gasket with magnetic core at the top and along the side perimeter of the door. An adjustable wiper gasket shall be mounted along the bottom edge of the door.

Doors shall have aluminum diamond treadbrite 48" high on the interior and exterior. Diamond treadbrite shall be mounted with adhesive and sealed with silicone. No external fasteners such as screws or pop rivets shall be applied as fastening for the diamond treadbrite.

Latch shall be break-a-way type with cylinder lock and inside safety release handle so the door can be opened from the inside even if locked. A positive action hydraulic door closer shall be included to ensure gentle closing action of door to opening and to ensure positive closing of door. The latch shall be of high-pressure zinc die cast with highly polished chrome finish.

Doors shall be supplied with two adjustable hinges, one of which is spring-loaded, and are a self-closing design. Freezer door to be left hinged.

Door frames shall consist of heavy reinforced steel "U" channel frame to encompass entire perimeter of opening, foamed-in-place to give extra support and rigidity to frame and to prevent racking, distortion, warping and twisting. A backup must be welded for added strength.

An armored anti-sweat heater cable shall be run in a breaker strip located behind a removable heavy gauge stainless steel trim for easy access to heater cable. Heater cable shall be run under threshold consisting of heavy reinforcement "U" channel breaker strip and heavy gauge stainless steel threshold. The optional second heater wire and thermostatically controlled thermostat should be installed.

Door sections shall be provided with an operating toggle switch and pilot light mounted on the exterior side of the door frame. A face mounted inlet box with an CFL, vapor proof, light shall be mounted on the interior side of the door frames for 115 volt, 60 cycle, 1 phase A.C. service. All wiring shall be in concealed rigid conduit. A 2-1/2" diameter chrome face, flush mount, dual reading, adjustable dial thermometer shall be provided on exterior of door sections to provide temperature reading of -40 degrees C to +150 degrees C.

To minimize infiltration of air when doors are open vinyl, bi-swing, CCI doors shall be provided.

FLOOR CONSTRUCTION:

Walk-in floor, DURA-FLOOR shall be fabricated similar to other panels and be designed to withstand uniformly distributed stationary loads of 12,000 lbs. per square foot. Interior surface of floor panels to be foamed-in-place 1/8" Aluminum Treadplate. The floor will sit in leveled pit.

HEATED PRESSURE RELIEF VENT:

The freezer shall be equipped with a two-way heated pressure relief vent to equalize pressure between the interior and exterior caused by defrost cycles and opening of door. Electrical service to be 115v/60/1 phase.

LED LIGHT FIXTURES:

Six - 4' LED light fixtures should be provided for the freezer. The freezer light fixtures must be connected to the freezer door section toggle switch for the CFL vapor proof light.

TRIM AND ENCLOSURES:

Trim matching the walk-in finish and fabricated to fit building conditions shall be supplied to close all joints between walk-in walls and the building walls. The space between the top of the box and the dropped ceiling must be closed off with trim matching the walk-in finish. Exposed outside walls to have 1/8” treadplate 48” off finished floor.

REFRIGERATION :

10 HP, Remote Pre Assembled Refrig. System Model RFOS010L4AEANT 208-230/60/3 Low Temperature, base, weather hood, winter controls, Scroll, Air-cooled, R454A, Std. Defrost Kit (33.3 Compressor RLA) with 2 RAL6E173DDA 208-230/60/1 coil (1.5 fan amps, 14.3 heater amps) with Dual Speed EC motor Units shall have drain pan with drainpipe connection.

The refrigerant for the freezer systems shall be R454A.

The basic components shall be supplied in remote configuration and shall include condensing unit, evaporator coil, control kit (pressure control, thermostat, liquid line drier, sight glass, suction line vibration eliminator, expansion valve and evaporator coil mounting kit), fan delay control and liquid line solenoid. All parts shall be factory mounted.

All connection requirements including tubing, electrical hook-up, drain line and refrigerant charge shall be supplied by qualified refrigeration, electrical and plumbing contractors.

A low ambient kit and weatherproof housing shall be supplied with condensing units. The low ambient kit shall consist of a crankcase heater and headmaster valve.

DRAIN LINES: All evaporator coils shall be provided with properly sized copper drain lines, supplied and field installed by contractor. Drains shall include a “P” trap outside of walk-in. The freezer drain shall be heated and insulated to prevent freezing. All plumbing to be in accordance with applicable codes. The contractor must run drain lines outside of the building if floor drains are not available inside.

The contractor shall be responsible for providing units completely installed and operational. The Freezer to operate at -10 degrees F.

NSF CONSTRUCTION: The walk-ins provided in the above specifications shall be constructed in accordance with National Sanitation Foundation, Standard

No. 7. The NSF approval seal shall be affixed to the serial plate of the walk-in.

QUALITY INSPECTION REQUIREMENTS:

Walk-ins shall be set up at the manufacturer's facility prior to shipment and a quality control inspection performed on the product. A digital photograph of the walk-ins set up at the manufacturer's facility shall be provided for the Food Equipment Contractor's permanent records.

INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS:

COOK CO ES

The walk-ins shall be supplied with a complete set of installation, operational and maintenance instructions to cover erection of the walk-in, installation operating procedures and routine maintenance schedule.

Bidders must obtain prior approval if not bidding specified items. Any and all variances in construction, design, performance and accessories from the item specified must be submitted in writing to the owner supervisor in addition to detailed manufacturers specifications ten days prior to bid opening.

WARRANTY

One year for replacement parts and labor on all hardware, accessories, and electrical components. Ten year warranty on the foamed-in-place panels including the wall, floor, ceiling, and door. Five year repair or replacement warranty on the compressor motor. Dealer warrants all installation-related workmanship for one year.

Dealer is responsible for start up and checking all pressures and pull down of unit to

38 degrees F and -10 degree F operating temperatures per ThermoKool installation instructions. Dealer is to maintain on-site temperature check for 2 hours after start-up with pressure gauge check at the end of this time and is to also visually inspect and pressure gauge check the unit the next day.

INSTALLATION REQUIREMENTS

Turn Key Installation Existing walk in cooler/freezer to be removed and hauled off site. Existing shelving to be relocated or hauled off per Cook County Nutrition Director’s request.

The existing walk-in, refrigeration units, and EXISITING TILE FLOOR must be removed and disposed of properly away from the school grounds BY THE DEALER The pit must be prepared such that the new cooler/freezer floor can be installed. The new walk-in floor must be installed such that it is level with or slightly higher than the existing kitchen quarry tile floor.

Existing electrical service/wiring must be field verified prior to construction by dealer. Dealer is responsible for wiring from the breaker box to the disconnects. Dealer is responsible for all wiring from the disconnects to the condensing units and evaporators. All Star Electrical Cale 229-300-0209 The condensing units must be placed outside of the building where the existing units are located. A pre bid site visit Is Mandatory and water-proof sealed. Aluminum “L” cove trim must be installed at the wall/floor joint.

All penetrations and conduit into the walk-in must be properly sealed. All penetrations through the school walls must be properly sealed.

Walk in freezer shelving by others.