1.1 Walk-In Coolers and Freezers shall be designed by Penn Refrigeration with prefabricated modular, precision formed, metal clad insulated panels to facilitate easy assembly and disassembly for relocation and expansion.

2.0 PRE-FABRICATED MODULAR PANELS

2.1 All panel sections, to ensure a permanent uniformity, will be precisely shaped with metal pans processed through state-of-the-art roll forming equipment and steel dies. Urethane insulation will be injected (foamed-inplace) to adhere with the inner and outer metal pans when confined within temperature-controlled fixtures or molds. Finished panels will be insulated with 100% urethane without internal wood, wood fiber, steel perimeter or substructure except for cam-locking devices, entrance doorframes, or special opening perimeters.
2.2 All panels will be 4" thick in interchangeable widths of 11 1/2", 23", 34 1/2" and 46" for quick and easy assembly. Panel edges will have formed urethane tongue or groove configurations with foamed-in-place compression gasket on interior and exterior of all male edges. This process ensures that all seams and joints of the cooler or freezer are airtight and vapor proof. Corner sections shall be 11 1/2" X 11 1/2" or 23" X 23" with a true 90 degree angle to ensure proper uniformity. Corners will be constructed with a radius on the interior pan for N.S.F. approval. Foamed-in-place "T" partition panels will be of the same construction as the adjoining panels with a 1/2" N.S.F. cove at the interior perimeter to facilitate cleaning.

3.0 PANEL LOCKING DEVICES

3.1 Steel cam-action locking devices shall be precisely positioned and firmly anchored in each panel, not to exceed 23" apart in all horizontal panels, to ensure a permanent seal. All locks will have integral rear flanges to permanently anchor their position without the use of temperature conductive strapping. Cam-locks will be placed at exact matching locations on the tongue and groove side to ensure compression of perimeter gasket in a uniform manner.
3.2 These cam-action locking devices shall consist of a cam-action rotating locking arm in the tongue edge, which will engage a steel rod receiving section in the groove edge. All locking of sections shall be performed from the interior by means of a hex wrench furnished with the cooler or freezer. The wrench holes shall be covered by 1/2" press-fit caps which will fit flush with the metal skin of the panel.

4.0 INSULATION

4.1 Insulation shall be a 4" thick rigid, foamed-in-place urethane. Urethane will be poured in place to a minimum density of 2.2 pounds per cubic foot resulting in a compression strength of 39 PSI, an initial thermal conductivity factor "K" of .115, and .128 after curing, and an overall coefficient of heat transfer (U-factor) of .0287. NO CFC'S WILL BE USED AS AN EXPANDING AGENT IN THE MANUFACTURING PROCESS.

5.0 FINISHES

5.1 Interior and exterior finish will be selected from the following list of metal options which can be chosen to suit location and/or application of structure. A combination of metal finishes can be selected to satisfy cosmetic and economic design requirements.
   5.1.1 Walls and ceilings in the following: 18 gauge embossed aluminum (standard finish); 24 gauge stucco embossed galvalume; 24 gauge galvanized steel; 18 gauge smooth white aluminum with baked-on white acrylic enamel finish; 18 gauge stucco embossed white aluminum with baked-on white acrylic enamel finish; 18 gauge stucco embossed tan aluminum with baked-on white acrylic enamel finish; 20 gauge stainless steel with a number 3 finish. Other metal finishes and colors are available; please contact one of Penn's Customer Service Representatives for information and details.
   5.1.2 Floors: Interior surface in one of the following: .080 aluminum tread plate; 18 gauge, type 304 stainless steel with a 2B finish; .090 smooth aluminum; or 16 gauge galvanized steel. All floors will support uniformly distributed standing loads up to 600 psf.

6.0 WALK-IN DOOR PANELS

6.1 Entrance doors shall be in-fitting flush mounted doors with 4" thick insulation as described in section 4 - 4.1. Door shall be constructed of same metal interior and exterior, (or as specified) as the section to which it is attached. Standard door size is 36" x 76". Please consult with our Customer Service Representatives for door sizes and styles.
   6.1.1 Each entrance door will be provided with two (2) heavy-duty cam lift hinges equipped with stainless steel pins and cam type nylon bearings. A self closing latch shall be furnished with a cylinder lock and provisions for padlocking. A spring-loaded door closer ensures a positive door seal.
   6.1.2 A bellows-type thermoplastic gasket with a magnetic core will be providede at the top and inner edge of the door along both sides. Gaskets shall be installed in foamed-in-place gasket retainer to allow for easy gasket replacement in the event of damage or misuse. A double blade wiper gasket will be provided at the bottom of the door.
6.2 Each door shall be mounted in a vinyl extruded door frame buck to prevent conduction of cold to the ambient surfaces. Insulation of this section will be as described for all panels.
   6.2.1 Vinyl extruded frame will be foamed-in-place without screws or other visible fasteners within the door section assembly. Freezer frame sections will include an anti-condensate heater cable behind a highly polished stainless steel channel to allow for frost-free operation.
   6.2.2 A heavy gauge stainless steel sill plate shall be provided for all hinged doors. Freezer doors shall have a heater cable run beneath the sill to prevent frost or moisture accumulation.
   6.2.3 Each door section will be provided with a flush mounted light switch and pilot light indicator. An incandescent vapor proof light fixture will be supplied and mounted on the interior section over the buck opening of the door. All pre-wiring shall be accomplished by material and performance guidelines approved by Underwriters' Laboratories (UL). An inlet box shall be provided for 115/125 volt 60 cycle, single phase AC service for field connection.
   6.2.4 A 2" diameter flush mounted dial thermometer will be supplied on one entrance door section for each refrigerated compartment. The thermometer shall have a visible "safety range" color code on its dial showing both Fahrenheit and Celsius scales.
   6.2.5 Two-way heated pressure/vacuum relief ports must be provided on all low temperature structures. The vent will be installed above the buck opening and be installed and pre-wired at the factory. All vents will be made of corrosion-proof material with screening to prevent vermin and insect transit. Additional vents, if required, shall be shipped loose for field installation. Medium temperature structures will have as non-heated relief port installed.

7.0 SCREEDS

7.1 Metal clad foam screeds-4 1/2" high will be provided with all less floor, and with floor/floorless combination structures to maintain constant and exact height.
7.2 Foam screeds will have a female top configuration and pins to accept all bottom corner and wall male cam-locks.
7.3 Metal cove base will be provided to form a sanitary cove on the interior screed to floor juncture if another medium, such as quarry tile, is not used.

8.0 ACCESSORIES AND OPTIONAL EQUIPMENT

8.1 Doors, Special Purpose
   8.1.1 Glass merchandising doors of various sizes for normal or low temperature product display will be provided by Penn Refrigeration as specified. A complete line of shelving, lights, and accessories can be selected for specific usage. For complete list of door sizes and options, please contact one of Penn Refrigeration's Customer Service Representatives.
   8.1.2 Large doors requiring track assemblies for horizontal slide or vertical lift operation, either manually or by power assist, will be provided by Penn Refrigeration. Construction and finish as described in panel structure. For complete list of door styles, sizes and options, please contact one of Penn Refrigeration's Customer Service Representatives.
   8.1.3 Vision panels can be provided with all entrance doors as listed per job specifications. Windows will be 14" x 14" or 14" x 24" mounted in an anodized aluminum frame. All windows will be three (3) pane-sealed units. Windows for low temperture applications will be provided with anti-condensate heaters.
8.2 Door Section, Special Options
   8.2.1 Vinyl strip curtains can be provided behind each entrance opening (as specified per job) to maximize operating efficiency by minimizing refrigerated air loss when the door is in the open position. Vinyl strips will overlap by a minimum of 2" with adjacent strips or door jambs.
   8.2.2 An audio-visual alarm can be provided at one entrance per refrigerated compartment. An alarm buzzer signal and warning light will activate when interior temperature ranges beyond hi/low set points. Contact one of Penn Refrigeration's Customer Service Representatives for different alarm options and specifications.
   8.2.3 Entrance doors located in high traffic areas can be provided with 36" high "kickplates" on the interior and exterior per job site requirements. The protective plate can either be 1/8" aluminum tread plate or 18 gauge stainless steel.
   8.2.4 Entrance ramps of heavy-duty construction can be provided to facilitate roll-in traffic for walk-ins with floors. Both interior and exterior floor ramps are available to meet specific job site requirements.
8.3 Structural Accessories
   8.3.1 A membrane roof cap can be provided to protect ceiling panels of all panel structures which are installed outdoors. A maximum area of 2,500 square feet can be covered in a single sheet. Square footage above 2,500 requires sheets to be heat welded together.
      8.3.1.1 Membrane roof will be UL approved and come in a white or tan color.
      8.3.1.2 If specified, a sloped foam roof, sloped at 1/4" per foot, will be provided for larger panel structures to promote proper and efficient roof drainage.
      8.3.1.3 The membrane roof will be flashed to sides of panel structure or existing building walls determined by job site conditions. Rigid vinyl termination strips will be used in the flashing process and will be colored to match vinyl roof material.
      8.3.1.4 Metal roof covers will NOT be used or accepted.
8.4 Roof Panel Ceiling Support Systems
   8.4.1 Unistrut Suspension System. Unistrut hanging support can be provided on indoor panel structures over 23' 11 1/2" in both width and length. The ceiling weight will be supported from existing building infrastructure with steel rods and unistrut channel. Rods will be installed every 23" on center.
   8.4.2 Exterior 'C' Channel. Panel structures installed indoors that do not exceed 23' 11 1/2" in both width and length can have ceiling panels suspended by steel 'C' channel on edge. Channel will rest on two (2) steel angles which concentrate the weight of ceiling panels on the walls of panel structure.
   8.4.3 Interior Steel Support. Panel structures installed outdoors or within buildings which do not allow for ceiling suspension can be provided with interior support steel assemblies. Steel assembly will be complete and will include all posts (vertical members), beams and joist (horizontal members), lateral bracing (bridging), ceiling hold-down anchors and erection hardware. Penn Refrigeration will supply structural members with a minimum of one coat of rust-inhibiting paint protection.

9.0 REFRIGERATION EQUIPMENT

9.1 Self-Contained Refrigeration Systems
   9.1.1 Condensing Unit. Self-contained refrigeration systems, when properly installed and coupled will require only electrical power and condensate drain connection for operation. All systems and components shall be factory tested prior to shipment. A CERTIFIED REFRIGERATION CONTRACTOR WILL BE REQUIRED ON-SITE TO ACCOMPLISH CHECKOUT AND START-UP PROCEDURES. The condensing unit will be supplied with all "in-line" parts and controls including sight glass, drier, vibration eliminator, time clock (for all low temperature units and as specified for medium temperature units) mounted and pre-wired when possible. Outdoor units will be supplied on steel base with weather cover and all controls necessary for low ambient protection and operation.
   9.1.2 Evaporator Coil. Each self-contained system will come with one (1) evaporator to match and balance with the condensing unit selection. Please contact one of Penn Refrigeration's Customer Service Representatives for a complete selection of evaporator models and specifications.
9.2 Pre-Assembled Remote Refrigeration Systems
   9.2.1 Condensing Unit. Each condensing unit will be supplied with all "in-line" parts and controls including sight glass, drier, vibration eliminator, time clock (for all low temperature units and as specified for medium temperature units) mounted and pre-wired where possible. Outdoor units will be supplied on steel base with weather cover and all controls necessary for low ambient protection and operation.
   9.2.2 Evaporator Coil. Each system will come with one or more multiple evaporators, dependent on job site conditions and condensing unit selection. Please contact one of Penn Refrigeration's Customer Service Representatives for a complete selection of evaporator models and specifications.
9.3 Packaged Refrigeration Systems
   9.3.1 System combines both condensing unit and evaporator in a one-piece contruction, which will fasten securely to a factory cut opening in ceiling panel(s). System will mount flush in a 4" ceiling panel and will not require the installation of a drain line due to the condensate evaporation pan.
   9.3.2 System is to be factory assembled, evacuated, charged, run-tested and wired.
   9.3.3 Controls are to be pre-set for +35F cooler and -10F freezer applications.

10.0 DELIVERY AND ERECTION

10.1 Delivery will be made to each job site by a factory truck with erection instructions furnished.
10.2 Erection shall be made under the personal direction of a factory supervisor with erecting being performed by others.
10.3 Complete erection of the unit shall be performed by experienced FACTORY personnel affiliated with the AFL-CIO Sheet Metal Workers

11.0 WARRANTY

11.1 Ten (10) year warranty on urethane walk-in panels. See Warranty Certificate for additional details and conditions.
11.2 One (1) year compressor-motor. Penn Refrigeration warrants to the initial purchaser the original motor compressor of the condensing unit supplied. An optional five (5) year compressor motor warranty is also available. See Warranty Certificate for additional details and conditions.
11.3 Contact Penn Refrigeration for authorization prior to any service or parts replacement. Failure to do so will VOID any warranty obligation.