Zero Zone CRYSTAL MERCHANDISER RVMC30 Installation & Operation Manual
Zero Zone CRYSTAL MERCHANDISER RVMC30 is a 30" wide refrigerated display case that features a CoolView® Ultra™ door for optimal product visibility. Its high-efficiency evaporator coil and brushless DC electronic motors provide reliable cooling and energy efficiency. The RVMC30 model is NSF and UL certified, ensuring high-quality standards and safety compliance. It is ideal for displaying and preserving food items in retail settings, restaurants, and other commercial spaces.
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ZERO ZONE CRYSTAL MERCHANDISER® COOLERS RVMC With CoolView® Doors and ChillBrite® LED Lighting INSTALLATION & OPERATION MANUAL COMPLIANT 66-0014 REV G • Jul 2022 Table of Contents ZERO ZONE WARRANTY....................................................................................... 1 INTRODUCTION...................................................................................................... 2 Important User Information ............................................................................... 2 Manufacturer...................................................................................................... 2 Intended Use...................................................................................................... 2 Display Case Models......................................................................................... 2 Case Features................................................................................................... 3 Testing Standards.............................................................................................. 3 INSTALLATION & OPERATION.............................................................................. 4 Delivery Inspection............................................................................................. 4 Packaging.......................................................................................................... 4 Location............................................................................................................. 4 Moving Cases.................................................................................................... 5 Optional Bases............................................................................................ 5 Leveling.............................................................................................................. 6 Lineup Assembly ............................................................................................. 13 Ultra Narrow Case Anchoring.......................................................................... 14 Door Leveling (Door Sag/Sawtooth)................................................................ 17 Bottom Mounting Plate.............................................................................. 18 Top Mounting Plate.................................................................................... 18 Drain................................................................................................................ 18 Condensate Removal System......................................................................... 18 Kickplates......................................................................................................... 19 Bumper............................................................................................................ 19 Top Trim........................................................................................................... 19 CoolView® Doors.............................................................................................. 19 CoolArc™ Door Handles ........................................................................... 19 Hold-Open Bracket.................................................................................... 19 Door Gasket.............................................................................................. 20 Door Closer / Adjusting Door Tension....................................................... 20 Removing a Door...................................................................................... 20 Installing a Door........................................................................................ 20 Rear Load Cases............................................................................................. 21 Shelves & Stocking Product............................................................................. 21 REFRIGERATION.................................................................................................. 22 Mechanical Components................................................................................. 22 Evaporator Fans........................................................................................ 22 Expansion Valve........................................................................................ 22 Additional Valves....................................................................................... 22 Refrigerant Piping............................................................................................ 22 Leak Check, Evacuation, & Charging.............................................................. 22 Operation Set Points........................................................................................ 23 Defrost ............................................................................................................ 23 Case Thermometers........................................................................................ 23 ELECTRICAL......................................................................................................... 24 General............................................................................................................ 24 MAINTENANCE..................................................................................................... 25 Cleaning........................................................................................................... 25 Under Case Floor Cleaning (NSF)............................................................ 25 When installing a Crystal Merchandiser® in a Hybrid Merchandiser™ configuration, refer to both this manual and the Hybrid™ Installation & Operation Manual. II ZERO ZONE WARRANTY ZERO ZONE WARRANTY Limited Warranty Zero Zone, Inc. (Seller) hereby warrants that any products manufactured by it and sold are warranted to be free from defects in material and workmanship, under normal use and service for its intended purpose, for a period of one (1) year from the date of original installation (not to exceed 15 months from the date of factory shipment). Zero Zone ChillBrite® LED Lighting carries a 5-year parts warranty. Zero Zone CoolView® Doors carry a 10-year glass pack parts warranty. The obligation under this warranty shall be limited to repairing or exchanging any part, or parts, FOB Factory, which is proven to the satisfaction of the Zero Zone Service Department to be defective. Zero Zone reserves the right to inspect the job site, installation, and reason for failure. This limited warranty does not cover labor, freight, or loss of food or product, including refrigerant loss. This warranty does not apply to motors, switches, controls, lamps, driers, fuses, or other parts manufactured by others and purchased by the Seller unless the manufacturer of these items warrants the same to the Seller, and then only to the extent of those manufacturer’s warranty to the Seller. Any products sold on an “AS IS” basis shall not be covered by this warranty. Extended Warranties In addition to the standard limited warranty, for further consideration, the Seller will extend to the original purchaser prior to shipment, a limited extended warranty on the compressor only, following expiration of the standard warranty. The Seller agrees to repair or exchange, at its option, or provide reimbursement for such exchange as directed, less any credit allowed for return of the original compressor, of a compressor of like or similar design and capacity, if it is shown to the satisfaction of Zero Zone that the compressor is inoperative due to defects in factory workmanship or material under normal use and services as outlined by Zero Zone in its Installation & Operation Manuals and other instructions. Length of Extended Warranty Any compressor warranty may be extended for an additional four (4) years, but such extension must be purchased prior to shipment to be effective. This warranty is only for the compressor and not for any other associated parts of the refrigeration system. Product Not Manufactured by the Seller The written warranty, if any, provided by the manufacturer of any part of the refrigeration unit sold by Seller to Buyer, but not manufactured by Seller, is hereby assigned to the Buyer. However, Seller makes no representation or warranty regarding the existence, validity, or enforceability of any such written warranty. Limitation and Exclusion of Warranties THE WARRANTIES SET FORTH HEREIN ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES AND REMEDIES WHATSOEVER, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE. DC-01-F • SEP 2019 the responsive company™ CASE DIVISION 110 N Oakridge Drive North Prairie, WI 53153 Phone: 262-392-6400 Toll Free: 800-247-4496 SYSTEMS DIVISION 6151 140th Ave NW Ramsey, MN 55303 Phone: 763-398-1996 Toll Free: 800-708-3735 Zero Zone Warranty • 1 INTRODUCTION Important User Information Copyright © 2022 Zero Zone, Inc. All rights reserved. No part of the contents of this manual may be reproduced, copied, or transmitted in any form or by any means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and retrieval systems without the written permission of the publisher, Zero Zone, unless it is for the purchaser’s personal use. The information in this manual is subject to change without notice and does not represent a commitment on the part of Zero Zone. Zero Zone does not assume any responsibility for any errors that may appear in this manual. In no event will Zero Zone be liable for technical or editorial omissions made herein, nor for direct, indirect, special, incidental, or consequential damages resulting from the use or defect of this manual. The information in this document is not intended to cover all possible conditions and situations that might occur. The end user must exercise caution and common sense when installing, using, or maintaining Zero Zone products. Zero Zone products should only be installed by qualified, professional refrigeration technicians. If any questions or problems arise, call Zero Zone at 800-247-4496. Any change to a Zero Zone product made during the installation, start-up, or at any other time must be submitted in writing to Zero Zone for approval and be approved by Zero Zone in writing prior to commission. The product warranty is voided when any unapproved change is made to a Zero Zone product. Manufacturer Zero Zone, Inc. 110 N Oakridge Dr • North Prairie, WI 53153 • 800-247-4496 • www.zero-zone.com Intended Use Zero Zone products are intended to be installed and used as described in this manual and other related Zero Zone literature, specifications, drawings, and data. All Zero Zone products must be leveled after being installed. Display Case Models The information contained in this manual pertains to the following Zero Zone display cases: CASE MODEL DESCRIPTION DOOR SIZE & TYPE RVMC24 Standard Case 24" x 74" CoolView® Ultra™ French Doors RVMC24D Deep Case 24" x 74" CoolView® Ultra™ French Doors RVMC24DRL Deep Rear Load Case 24" x 74" CoolView® Ultra™ French Doors RVMC24RL Rear Load Case 24" x 74" CoolView® Ultra™ French Doors RVMC24UN Ultra Narrow Case 24" x 74" CoolView® Ultra™ French Doors RVMC24BBUN Back-to-Back Ultra Narrow Case 24" x 74" CoolView® Ultra™ French Doors RVMC30 Standard Case 30" x 74" CoolView® Ultra™ Doors RVMC30D Deep Case 30" x 74" CoolView® Ultra™ Doors RVMC30DRL Deep Rear Load Case 30" x 74" CoolView® Ultra™ Doors RVMC30RL Rear Load Case 30" x 74" CoolView® Ultra™ Doors 2 • Introduction Introduction Case Features Zero Zone produces high quality refrigerated display cases using state-of-the-art components. The cases are built with the thickest insulation in the industry and a high efficiency evaporator coil. Case features include: Brushless DC electronic motors Zero Zone ChillBrite® LED Lighting Zero Zone CoolView® Ultra­™ Doors Testing Standards These display cases were designed and tested using the following industry standards: NSF 7 – Commercial Refrigerators and Freezers (ANSI Approved) (equipment certified by NSF) NSF 51 – Food Equipment Materials (ANSI Approved) (equipment certified by NSF) UL 471 – Commercial Refrigerators and Freezers (ANSI Approved) (equipment certified by ETL) ASHRAE Standard 72 – Method of Testing Commercial Refrigerators and Freezers (ANSI Approved) AHRI 1200 – Performance Rating of Commercial Refrigerated Display Merchandisers and Storage Cabinets (ANSI Approved) DOE Compliant (All U.S. Sales and U.S. Territories) ASHRAE Standard 72 specifies the test conditions for the equipment. It includes the ambient conditions of 75°F dry bulb and 55% RH. It also specifies the door opening requirements for the performance test. Doors are opened six times in one hour for six seconds. The door opening test period is for eight hours during one 24-hour performance test. As an example, a 5-door case will have 240 door openings during one 24hour test. Consult the factory if your store exceeds these test conditions. Introduction • 3 Installation & OPERATION INSTALLATION Operation DO NOT STAND ON TOP OF A CRYSTAL MERCHANDISER . THE TOP OF THE CASE IS NOT DESIGNED TO ! CAUTION! SUPPORT THE WEIGHT OF A PERSON. ® Delivery Inspection Zero Zone display cases are carefully factory-tested, inspected, and packed to ensure delivery in the best possible condition. The equipment should be unwrapped and checked for damage immediately upon delivery. DAMAGE MUST BE NOTED AT TIME OF DELIVERY, AND ALL CLAIMS FOR DAMAGES MUST BE FILED WITH THE TRANSPORTATION COMPANY, NOT WITH ZERO ZONE. The carrier will supply necessary report and claim forms. Contact your Zero Zone sales representative or the service department to arrange for replacement parts. Do not leave, store, or hold case outdoors in direct sunlight or high ambient temperature. With the end panels on, the case is airtight; the inside temperature of the case will increase, and the heat will be unable to escape. This could potentially cause any plastic inside the case to deform or warp. Packaging Each case in a lineup is labeled to identify the lineup and joint. The label uses a two digit number designation, separated by a decimal. The first number indicates the case lineup. The second number indicates the case joint. Case joints begin with the number “1” at the left-most joint in the lineup when looking at the front of the lineup. The first case in the lineup will be labeled on the right end and the second case in the lineup will be labeled on the left end. The numbers on each end to be joined will match (See Figure 1). Figure 1: Case Label Information 1.1 1.1 1.2 1.2 Front of Lineup Front of Lineup The first case in a lineup (with the right side labeled “x.1”) has a packet attached to the shelving that contains touch-up paint. Every case in a lineup has a packet attached to the shelving that contains important information about the case and/or lineup and, if applicable, special instructions for installing ordered options. Bumpers and kickplates are shipped on top of the case. Shelves for the case are tie-wrapped and blocked into the individual cases. Other accessories like drain traps, drain pans, condensate evaporation pans, and hat channel rails are shipped in the case that require the parts. Materials for joining cases—including caulk, joining bolts, splices, and end filler posts—are shipped in each case to be joined. The doors are prevented from opening during shipment with the use of a door-holding shipping bracket. The bracket is screwed to the top of the case at each door and should be removed when the case is unpacked. Location Zero Zone cases must not be installed in the direct rays of the sun or near a source of radiant heat. Be certain that the floor under the installation is of sufficient strength to prevent sagging. Uneven surfaces will result in reduced performance. Cases should be set to allow a minimum 3" of space behind the back of the units. This will allow necessary air to circulate behind the display cases and prevent condensation. Higher humidity stores with minimal air circulation require at least a 4" gap. A minimum 2" gap is recommended between cases on end-to-end installations. All minimum spacing requirements may increase if seismic restraints are used. Building soffits must be set back at least 6" from the front of the case to allow access to electrical wiring on the top of the case. 4 • Installation & Operation Installation & Operation Moving Cases Various tools and equipment may be used to move cases, including, but not limited to, a forklift, a Johnson bar, a pallet jack, furniture rollers, casters, or a Rol-A-Lift. Be careful to avoid damaging the store flooring. Only certified forklift drivers should use forklifts to move the cases. The case should only be lifted off the floor as high as necessary for transport. The forklift should be driven slowly; avoid abrupt motions or bumps. Use the end frame to push/pull the case. For best results, push/pull lower on the end frame. Do not push/pull on the mullions as this can cause the mullions to bend. When using a Johnson bar, only contact the sheet metal of the bottom foamed panel. Do not contact the bumper support or end panel. Be careful not to pierce the sheet metal with the corner of the Johnson bar. When using a pallet jack or furniture rollers, only place them under the floor panels. Do not place them under the bumper support or drain pipe as that will crush the components. Cases have steel protective support plates under the end panels (not under insulated dividers) to protect them from Johnson bar damage. Make sure that a forklift with the proper fork dimensions is available. Forks must be 48" long, 1 1/2" to 1 3/4" thick, and no more than 4" wide to fit the bases. Refer to the table below for instructions. CASE MODELS INSTRUCTIONS 2RVMC24 Forks must extend 20" to 24" under the case from either end 3RVMC24 Forks must extend 26" to 30" under the case from either end 4RVMC24 Forks must extend 39" to 43" under the case from either end 6RVMC24 Forks must extend 44" to 47" under the case from either end 2RVMC30 Forks must extend 26" to 30" under the case from either end 3RVMC30 Forks must extend 39" to 43" under the case from either end 4RVMC30 Forks must extend 44" to 47" under the case from either end 5RVMC30 Forks must extend 44" to 47" under the case from either end OPTIONAL BASES For low shipping height applications, such as 80" tall doorways, Zero Zone offers 1" bases or 1 3/4" bases. Cases with 1" bases will be shipped on a wooden pallet and are not forkliftable. The case can be removed from the pallet to slide it through the 80" doorway. The 1 3/4" bases are expandable to accommodate up to 1 3/4" thick forks (See Figure 2). To use a forklift on the expandable bases, raise the case with a Johnson bar and place wooden blocks under the case, allowing the base to expand enough for forks to be inserted. Figure 2: Expandable Base Installation & Operation • 5 Installation & Operation Cases with 1" or 1 3/4" bases will be set on hat channel rails or into nested bases (See Figure 3). The drain elbow will be shipped loose and must be installed using extra thick PVC cement after the case set in place. Spacer blocks (also called filler blocks) are included in the end bases of 4-door, 5-door, and 6-door cases that use bases which are taller than 3 1/2". Spacer blocks limit the case's forward tilt while it is lifted by a forklift. Forks should be inserted above the spacer blocks (See Figure 4). Figure 3: Nested Base Figure 4: Spacer Block 4 3/8" max. opening for 2 and 3-door cases. 3 3/8" max. opening for 4 and 5-door cases. Spacer Block(s) Leveling Cases should be set level right to left to allow complete drainage of defrost and condensate water. Since a level floor area is seldom available, the following steps are recommended to ensure a level installation. If your case uses seismic restraints, specific instructions for attaching seismic restraints are included in your document package. Read and understand these instructions before assembling the lineup. 1. Measure off and mark on the floor the exact dimensions of the case lineup (See Figure 5). Refer to the fixture plan or floor plan. 2. Snap a chalk line at the locations for the front and back positions of the bases. 3. Mark locations of all joints, both front and back. 4. Using a laser level or transit, find the highest point along both base position lines. Using the high point as a reference, mark the difference directly on the floor to each base, both front and back (See Figure 6). Figure 5: Measure and Mark Exact Case Outline Figure 6: Mark Floor Level Difference 5. If your case uses optional hat channel rails to raise the case height, place shims under the hat channel rails (See Figure 7 on page 7). On 3 and 4-door cases, the center bases are not aligned, so the hat channel rails must be angled slightly to support the bases (See Figure 10 through Figure 13 starting on Page 8). 6. Place enough shims under each base or optional hat channel rail to equal the highest point. Shims should not extend beyond the front case bases or they will interfere with installing trim. The shims should be oriented to sit under the front and rear bends of each base. Tape all shims in place (See Figure 8 and Figure 9 on page 7). 6 • Installation & Operation Installation & Operation Figure 7: Hat Channel Rail Orientation Base Hat Channel Rail Shim osition hat channel rails with tape up. Place shims P perpendicularly under the hat channel rails. 2-door cases get 2 hat channel rails. 5-door cases get 4 hat channel rails. 3 and 4-door cases get 3 hat channel rails. Do not position under the drain hub. Shim Base Base Shim Hat Channel Rail Figure 8: Tape Shims on the Floor Under Each Base or Hat Channel Rail Caa C ssee FFrro onnt Placement Under Bases Ca se t Fro nt Placement Under Hat Channel Rails Figure 9: Shims Under Bases (Without Hat Channel Rails) Ca s eF ron Shims must be placed under the front and rear bends of each base to prevent the base from warping/buckling. t Display Case Case Shims Shims Display Case Case Shims Shims Both corners of the base must be supported by shims to prevent base buckling DWG. NO. SP-6006-1 REV. A Installation & Operation • 7 Installation & Operation Figure 10: RVMC30 Base Locations Drawings are top views with bases shown under the case. The front of the case is toward the bottom of the page. Case length does not include end panels (2 1/2" wide each). 2RVMC30 4RVMC30 5RVMC30 8 • Installation & Operation 3RVMC30 Installation & Operation Figure 11: RVMC24 Base Locations Drawings are top views with bases shown under the case. The front of the case is toward the bottom of the page. Case length does not include end panels (1 1/2" wide each). 2RVMC24 3RVMC24 4RVMC24 6RVMC24 Installation & Operation • 9 Installation & Operation Figure 12: RVMC30D (Deep Case) Base Locations Drawings are top views with bases shown under the case. The front of the case is toward the bottom of the page. Case length does not include end panels (2 1/2" wide each). 2RVMC30D 4RVMC30D 5RVMC30D 10 • Installation & Operation 3RVMC30D Installation & Operation Figure 13: RVMC24D (Deep Case) Base Locations Drawings are top views with bases shown under the case. The front of the case is toward the bottom of the page. Case length does not include end panels (1 1/2" wide each). 2RVMC24D 3RVMC24D 4RVMC24D 6RVMC24D Installation & Operation • 11 Installation & Operation 7. The case is designed with minimal gaps between adjacent doors to provide a clean appearance. To maintain even, consistent gaps and proper door operation, the case must be leveled front-to-back and side-to-side. Ensure that the case is set square to within 1/8" (See Figure 15). After the case is set, use at least a 48" level to ensure the case is level. Add additional shims as needed under specific bases. This will reduce door sag/sawtooth (See "Door Leveling" on page 11). Figure 15: Case Squareness 1. Measure squareness from top right corner of the case to the bottom left corner of the case. 2. Measure again from the top left corner of the case to the bottom right corner of the case. 3. Measurements should be equal. Difference should be no more than 1/8". DR-377-B 8. Standard depth and Deep cases should be set with a slight backward tilt to offset the forward lean of a fully loaded case. We recommend an additional 3/8" of shims be installed under the front bases after the case is leveled (See Figure 14). Note: Do not add extra shims under Ultra Narrow cases. Figure 14: Tilt Back Approximate tilt back of empty case: 1" on standard depth case 7/8" on Deep case Add 3/8" of shims under front bases for proper tilt back. 12 • Installation & Operation Installation & Operation 9. When joining a Crystal™ freezer to a Crystal™ cooler, both cases should be tilted back with an additional 3/16" of shims under the front bases after the case is leveled. When joining multiple freezers and coolers in a lineup, the tilt back on the coolers should gradually increase while working away from the cooler/freezer joint until the last case has an additional 3/8" of shims under the front base and the tilt back on the freezers should gradually decrease to no additional shims while working away from the cooler/freezer joint (See Figure 16). Figure 16: Cooler to Freezer Leveling Freezer Place shims under each base. Cooler Place shims under each base. Multiple Freezers Place shims under each base. Multiple Coolers Place shims under each base. 10. Place additional support shims under any bases or hat channel rails with gaps taller than one shim. Do not place shims between Total height and hat channel rails. of shims should be less than 3/4". Lineup Assembly bases Zero Zone display cases have been designed for continuous display so that cases may be joined together to create multiple of any a lineup desired length. The lineup will be ready for assembly after removing the packaging material. A case lineup must be properly aligned, which starts with properly leveling the case (See "Leveling" on page 6). It is crucial to use a laser level to measure the high points in the floor and properly shim each base location. Installation & Operation • 13 Installation & Operation The bottom of the end panels are protected by steel support plates, which must be unbolted and removed before the lineup is set. There are bolts that go up through the support plates into the underside of the foamed floor. A 1" wide trim piece is shipped inside the case to seal the vertical gap between cases being joined. It needs to be attached on the right of the first case using the top and bottom joining holes in the extrusion. The next case in the lineup should slide up to the trim piece so that the door seals against the trim piece. A case must be prepared with Butyl caulk before setting the next case in the lineup. Case caulking instructions and caulk are shipped with every case (See Figure 18 on page 15). Move the next case into position and bolt it to the first case using the 4 joining bolts that are provided. Begin tightening the bolts at the top rear, working down the back of the case and up the front, making sure that the seams are flush. Do not pull cases together using joining bolts. The interior case seams must be sealed using silicone sealant for NSF compliance (See Figure 19 on page 16). Do not allow Butyl caulk and silicone sealant to contact one another as this may affect adhesion or color of each. An insulated divider is used to join 2 different case models or 2 different temperature cases. The divider is typically factory-installed to one of the cases. There are 2 types of insulated dividers: 1. Between a Crystal™ cooler and a different case: The insulated divider has a panel on each side with nut inserts in the panels; each side is bolted to the respective end frames. Do not pull cases together using joining bolts. 2. Between 2 Crystal™ coolers: The insulated divider uses a thru-bolt design. The divider is attached to one of the cases using short bolts for shipping. When the cases are installed, the short bolts are removed and longer joining bolts are installed to bolt the cases together. Do not pull cases together using joining bolts. Ultra Narrow Case Anchoring The Ultra Narrow case (RVMC24UN) must be anchored to either another case or a wall to ensure the case will not tip forward. The Back-to-Back Ultra Narrow (RVMC24BBUN) does not require anchoring. It may be used as the anchor for the Ultra Narrow case. Two case-to-wall support brackets will be provided when anchoring the Ultra Narrow to a wall (See Figure 17). Two case-to-case support brackets will be provided when anchoring the Ultra Narrow to another case. The Ultra Narrow case must be set 3" away from the other case for proper ventilation, so a provided trim piece must be field-installed to cover the gap (See Figure 20 on page 17). RELEASED Figure 17: Anchoring Ultra Narrow to a Wall SCREW (2) TIP OVER PREVENTION BRACKETS (ZZ #18-0422) TO TOP OF CASE AND TO A SOUND STRUCTURAL SUPPORT MEMBER IN WALL 5"-20" DIM TO CENTER 3" TO 5" FROM REAR OF CASETO-WALL 5"-20" DIM TO CENTER 14 • Installation & Operation REVISION INFORMATION MATERIAL: FINISH: TOLERANCES SHALL APPLY UNLESS OTHERWISE SPECIFIED .X = ± .1 .XX = ± .02 .XXX = ± .005 ANGLES, ± 1º ZERO ZONE, INC. 110 NORTH OAKRIDGE DRIVE Installation & Operation Before joining the cases, remove all packaging material on the display case, including any spacer blocks inside the bases. Repeat caulking between each case in the lineup. Figure 18: Case Joint Caulking (Butyl*) Critical Area: Apply caulk along center of metal flanges DETAIL A DETAIL B Apply caulk across back panel seams If present, remove any tape or weather stripping from the case DETAIL C DETAIL D IT IS CRITICAL TO FOLLOW THIS PROCEDURE TO ENSURE CASES ARE PROPERLY SEALED. DR-294-B SURFACES TO BE CAULKED MUST BE CLEAN, DRY, FREE OF TAPE/ADHESIVE, AND FREE OF FROST (ABOVE 40ºF). Note: Apply Butyl caulk to only one case—not both cases. The caulk will spread out when the cases are pushed together, and excessive caulk may squeeze out of the joint. Wipe away any caulk that squeezes out. Butyl caulk will not mix with silicone sealant (used for NSF sealing), which will affect adhesion of both. 1. Apply 3/8" thick beads of Butyl caulk* along the ceiling, rear wall, and bottom of the case where indicated by the dashed lines in the drawing. Caulk must be continuous with no gaps. Always apply 2 beads where specified. Caulk must be applied around a plexiglass divider and not onto the divider itself, if applicable. 2. After cases are joined and tightened, caulk the top and back exterior seams, if accessible, to ensure a tight seal. 3. See Figure 19 on page 16 for information about NSF compliance sealing with silicone sealant. *DO NOT APPLY BUTYL CAULK ON SEAFOOD OR BAKERY CASES. Butyl caulk never cures and emits vapors that affect seafood and bakery products. Recommended alternative caulk: Polyurethane-based (full curing, durable, moisture-activated) or silicone-based (full curing). Installation & Operation • 15 Installation & Operation Figure 19: NSF Compliance Sealing (Silicone) Seal between all access holes and cut-outs THIS PROCEDURE MUST BE FOLLOWED FOR NSF COMPLIANCE. DR-295-B SURFACES TO BE SEALED MUST BE CLEAN, DRY, FREE OF BUTYL CAULK, AND FREE OF FROST (ABOVE 40ºF). Note: Cases must be properly caulked and joined before NSF sealing. Wipe away any Butyl caulk that squeezes out of the case joint. Butyl caulk and silicone sealant will not mix, which affects the adhesion of both. See Figure 18 on page 15. 1. Apply silicone-based sealant in small, continuous beads where indicated by the dotted lines in the drawing. Do not thin or feather, as that will affect adhesion. 2. Sealant must be added between cases at case joints, between a case and an end panel, and between all access holes and cut-outs in the case end frame. 16 • Installation & Operation 7'1 1/4" Installation & Operation Figure 20: Anchoring Ultra Narrow to Another Case 9'1 1/2" 1'0" 3" GAP BETWEEN CASES A LEFT SWING DOORS 4'7" FRENCH SWING DOORS 9" RIGHT SWING DOORS 7" DOUBLE STICK TAPE THE CASE-TO-CASE TRIM TO THE 2RVMC24UN END PANEL CASE-TO-CASE TRIM (37-0528-XP1) DETAIL A SCREW CASE-TO-CASE TRIM TO END TRIM ON VMC24BBUN Door Leveling (Door Sag/Sawtooth) Doors must be leveled before the bumper and kickplate are installed. For same-swing doors, the door-to-door gap should be 3/8". For French-swing doors, the door-to-door gap should be 7/16" at the handle side and 3/8" at the hinge side. To set the proper gaps, loosen the screws holding the top or bottom door mounting plates, then shift the door. Installation & Operation • 17 REVISION INFORMATION 7'1 1/4" SCREW CASE-TO-CASE SUPPORT BRKT (18-0066) IN CEILING OF 2RVMC24UN & 3RVMC24BBUN 7' 1/4" 1'0" RELEASED Installation & Operation BOTTOM MOUNTING PLATE Figure 21: Center Locking Screw To move the bottom mounting plate, the center locking screw (located behind the bumper) must be loosened. 1. o remove the bumper, use a flathead screwdriver to pry it up from the bottom. Lift the T edge, and then slide the screwdriver down the entire length of the bumper to loosen it. Once the bottom edge is disconnected, use a hammer to tap the screwdriver upwards and disengage the bumper from the upper track. Remove the bumper. 2. Loosen the center locking screw by 2 turns, accessed through the hole in the bumper support plate (See Figure 21). This will allow the bottom mounting plate to shift. Do not remove the center locking screw. 3. Tap the door’s aluminum extrusion with a rubber mallet to shift the door. Once the door is in position, retighten the center locking screw. TOP MOUNTING PLATE 1. To access the top mounting plate, remove the top trim piece. This will require a Phillips bit and a 1/4" hex screw bit. 2. Loosen all 3 screws that secure the slotted plate by 2 turns (See Figure 22). Do not remove the screws. 3. Tap the door's aluminum extrusion with a rubber mallet to shift the door. Once the door is in position, retighten all screws. Figure 22: Top Mounting Plate Drain The drain is located at the center of the case in the floor pan. The 1" PVC drain outlet is located at the center front of the case behind the kickplate. The drain line exits the case in the center. The lateral runs of drain pipe should be installed through the bases (See Figure 23). There is no room in front of the base for the drain pipe because the kickplate installs directly to the front of the bases. Figure 23: Drain Installation Install the tee to the outlet pipe and a drain trap to the tee. Plug the open end of the tee using the clean-out plug supplied with the drain trap kit. The drain line must be pitched away from the case. The tee, drain trap, and plug are supplied with the case. The drain trap must be level. The drain trap should be primed with water after installation. The drain line must be pitched away from the case enough to ensure proper drainage. Consult your local codes for minimum requirements. Cases with 1" bases are shipped on wooden skids or pallets. The forward drain section, tee, and “R” trap are shipped loose for field installation. Condensate Removal System Zero Zone remote cases can be equipped with a condensate removal system. The system uses a drain pan with pump located behind the kickplate and a condensate evaporation pan mounted on the top of the case. Condensate water and any liquid spilled in the case will drain into the drain pan. The pump is equipped with a float that turns the pump on when there is a sufficient liquid level. Liquid is pumped through a plastic hose through a check valve and into the condensate evaporation pan. The evaporation pan is equipped with a heater and a float switch to turn on when the heater is submerged in liquid. When the heater is energized, the evaporation pan will be extremely hot and should not be touched. The pump and evaporation pan should be cleaned regularly. Any spilled product, other than water, should be cleaned to prevent odors. 18 • Installation & Operation Installation & Operation Kickplates Figure 24: Kickplate Installation Each case is shipped with a front kickplate. Cases with end panels are shipped with 1 side kickplate per end panel. Cases that join together are shipped with a kickplate splice. Front and side kickplates are attached to the case bases using Tinnerman clips. Position the front kickplate so the flange is on top and facing outward. The screw (supplied) goes through the kickplate and into the Tinnerman clip (See Figure 24). There is a natural gap between the top of the kickplate and the underside of the Crystal Merchandiser® that allows airflow of 50 CFM per door. If more airflow is required, contact the factory to order optional louvered kickplates (provides 150 CFM per door). Bumper 1. Cases are supplied with a 3" protective bumper shipped loose on top of each case. Each case has its own bumper assembly, including end caps. The steel bumper support and snap track are factory-installed on the front of the case. The bumper may need trimming before snapping it onto the snap track. 2. Install Tinnerman clip at each base. Position side kickplate. 3. Position front kickplate with top flange facing outward. 4. Insert fasteners to secure the front and side kickplates to the Tinnerman clips. Door leveling must be completed before attaching the bumper (See "Door Leveling (Door Sag/Sawtooth)" on page 17). Top Trim Top trim is factory-installed, and it hides the door hardware located on the top exterior of the case. Joint splices are shipped loose and must be fieldinstalled at the upper case joints. CoolView® Doors COOLARC DOOR HANDLES Side Kickplate Tinnerman Clip ™ ™ CoolView® doors are self-closing, and closing tension increases as the door opens wider. The hold-open bracket keeps the door open when engaged, which is useful for stocking shelves or case maintenance. To engage the hold open bracket, open the door to at least 90° until it clicks. Closing the door to about 80° will release tension on the door, and it will self close again. Figure 25: Hold-Open Bracket CoolView Ultra doors use the CoolArc door handle. The CoolArc door handle is attached to the glass surface of the door by an industrial-grade adhesive. HOLD-OPEN BRACKET Base ™ ™ Front Kickplate Door leveling must be completed before attaching the bumper and kickplate Sag/Sawtooth)" (See "Door Leveling (Door on page 17). ® Installation & Operation • 19 Installation & Operation DOOR GASKET Upper and lower horizontal magnetized gaskets run the length of each case. The gaskets mate up to steel plates installed at the top and bottom of each door. A vertical gasket runs along the hinge-side of each door. The gasket seals against the handle-side of each adjacent door. At the end of each case, another gasket is placed on the handle-side of the door and is used to seal against the side of the case (instead of an adjacent door). French door cases include a sweeper gasket on the handle-side of each door. DOOR CLOSER / ADJUSTING DOOR TENSION The door closer is a spring cartridge that automatically closes the door. It is located on the bottom of the hinge side of the door. A square pin inside the door closer fits into a square opening on the door, transferring the spring tension to the door. This means that the square pin must be aligned with the square opening when installing a door. An adjustment screw on the front can be used to increase or decrease tension. 1. Open the door to observe current door tension. A properly tensioned door will close itself gently and not swing open. 2. Use a flathead screwdriver to turn the door tension screw (See Figure 27). Do not use power tools; a screwdriver allows for more control. 3. To increase tension, hold the door open 2 inches and turn the screw counter-clockwise until the door begins to close. Once it closes, increase tension by 2 more turns. 4. To decrease tension, turn the screw clockwise. Figure 27: Door Tension Screw The screws holding the door closer are secured with removable threadlocker gel; extra force will be necessary to remove them. REMOVING A DOOR 5. Remove the top case trim that covers the door hinges. 6. Turn door tension screw clockwise until door does not close on its own. This removes tension between the door and torque adjuster. 7. Disconnect the hold-open bracket from the bottom of the door (See Figure 25 on page 19). 8. Remove shoulder bolt and bushing on the top of the hinge side of the door (See Figure 26). Only remove the bolt holding the door; do not remove the bolts attached to the case. 9. Pull the top corner of the door away from the case. The door is heavy. Be prepared to hold the weight of the door. 10. Lift the door up and clear of the torque adjuster and set down carefully. For safety, do not lift the door by the handle. INSTALLING A DOOR 1. Lift the door and set it in the door closer. Line up the door so the square hole in the door sets into the square rod of the door closer. The door is heavy. For safety, lift the door by the rails; do not lift by the handle. 2. Lean the door into position against the case. Install the washer between the mounting plate and the door, and install the bushing and shoulder bolt above the mounting plate and into the door (See Figure). You may need to get on a ladder to install the bolt and bushing. Be careful while doing this because the door will not be secured in place. 3. Attach the hold-open bracket between the bottom of the door and the bottom of the case (See Figure 25 on page 19). 4. Turn the door tension screw counter-clockwise until the door gently closes itself (See "Door Closer / Adjusting Door Tension" on page 20). 5. Properly level the door to eliminate sag/sawtoothing (See "Door Leveling (Door Sag/ Sawtooth)" on page 17). 6. Reinstall the top trim piece and electrical raceway cover on top of the case. 20 • Installation & Operation Figure 26: Door Shoulder Bolt Installation & Operation Rear Load Cases Rear Load cases are shipped with the rear sliding doors removed and shipped loose with the case. To maintain proper temperature, the Rear Load case must be positioned in the opening of a walk-in cooler. Before attaching the cases to the walk-in, measure the diagonal opening of the Rear Load case to ensure a square case installation. If the diagonal measurements are not within 1/8", the case must be re-leveled. After the cases are set, install the doors into the opening by inserting the top of the door into the upper track and then sliding the bottom of the door into the lower track. Figure 28: Rear Load Insulated Close-Off Rear Load cases may be ordered with an optional insulated close-off for Fasten to Case applications where a walk-in cooler does not have a curb along the floor (See Figure 28). After the case is set, the close-off must be installed to the bottom rear of the display case. It protects the display case from potential damage if a pallet of food or beverages is smashed into the back of the display case. It also prevents warm air from entering the walk-in cooler and prevents water from flowing underneath the display case. Shelves & Stocking Product Shelf location may be adjusted in 1" vertical increments in any position for best display advantage. Make sure the shelf brackets are securely seated before placing any product on the shelf. The standard shelves may be tilted down at a 10° angle. Optional shelf assemblies are available that may be tilted at 5°, 10°, or 15° angle. Fasten to Floor The case may be stocked with product after it has operated at least 24 hours with correct case temperature and proper control operation. When stocking the shelves, leave a gap between the product and the shelf above, which allows an air curtain on top of the product. Product should not extend beyond the front of the shelves or bottom wire rack. Do not exceed shelf load capacity (See Figure 29). To unassemble a shelf, insert a putty knife between the side of the shelf and the shelf bracket. Pry the pieces apart to disengage the bracket. Shelves can be ordered with 1", 2", or 3" acrylic product stops, which fit into aluminum price tag molding. Slide the product stop into the price tag molding and push it down to the bottom of the channel (See Figure 30). The channel of the price tag molding may need to be pried open with a screwdriver, but the product stop should slide in easily once started. Figure 29: Shelf Load Capacities SHELF TYPE DEPTH BRACKET TYPE LOAD CAPACITY (LBS.) 2-Position (0°/10°) 250/150 4-Position (0°/5°/10°/15°) 250/250/150/100 2-Position (0°/10°) 250/150 4-Position (0°/5°/10°/15°) 250/250/150/100 2-Position (0°/10°) 250/150 2-Position (0°/10°) 350/150 4-Position (0°/5°/10°/15°) 350/250/150/100 2-Position (0°/10°) 350/150 4-Position (0°/5°/10°/15°) 350/250/150/100 27" 2-Position (0°/10°) 350/150 22" 2-Position (0°/10°) 250/150 22" Solid Shelf, Standard Duty 24" 27" 22" Solid Shelf, Heavy Duty Wire Shelf Figure 30: Acrylic Product Stops (1" Shown) 24" Product stop fits into the price tag molding. Installation & Operation • 21 Refrigeration REFRIGERATION Mechanical Components EVAPORATOR FANS Air is circulated through the display case by fans. The fans are located above the false ceiling panel, and they can be accessed by removing the screws holding the false ceiling panel. Air enters from the top front air grille, and air is discharged down the rear ducts. EXPANSION VALVE Typically, the expansion valve is located behind the false ceiling panel in the right-most door of each case. After removing the false ceiling panel, you will see a rectangular cover panel. Remove the cover panel to access the expansion valve and suction line Schrader valve (See Figure 31). Alternatively, the expansion valve may be located behind the optional right back duct per customer request. An access cover is provided in the duct (See Figure 32). Figure 31: Fan and Expansion Valve Expansion Valve Figure 32: Alternate Expansion Valve Location Expansion Valve Fan ADDITIONAL VALVES Glycol cases typically have a balance valve located in the outlet line on the top of the case. If a stop solenoid is provided, it will also be located in the outlet line on top of the case. Schrader taps are provided inside the case on the right-hand side of the coil for venting and draining the system. An additional tap is provided on top of the case to allow for venting when the system is drained. Refrigerant Piping Correct refrigeration line sizing and industry standard installation practices are essential for proper system operation. Zero Zone offers many refrigerant choices. We recommend using the Sporlan Virtual Engineer Toolbox to calculate sizing for liquid, suction, and discharge lines: https://solutions.parker.com/sporlanvirtualengineer. Go to the link, select the line type, and then enter the information required to calculate the recommended line size. Toggle between metric or imperial units as needed. Leak Check, Evacuation, & Charging After all of the refrigeration piping and system components have been assembled, the entire system must be pressurized and checked for leaks. When the system is leak free, evacuate with a deep vacuum pump. Triple evacuation should be done to 500 microns or less, and nitrogen sweep is recommended. After the system has been thoroughly evacuated of all moisture and non-condensable gas, charge the system with the specified refrigerant. 22 • Refrigeration Refrigeration Operation Set Points Refer to the case spec sheet for btu/h requirements and electrical requirements. Operate the case at the following settings to maintain product temperature of 41°F or below, per food safety regulations (See Figure 33). Figure 33: Case Temperature Internal Control Options SETTING COOLER Evaporator Temp 28°F Return Air Temperature Set Point 33°F Return Air Temperature Differential 4°F Discharge Air Temperature Set Point 30°F Discharge Air Temperature Differential 4°F SETTING R-404A R-448A Sat. Temp Condensing Unit Cut-In 74 psig 62 psig 33°F Condensing Unit Cut-Out 62 psig 51 psig 25°F Note: Set points based on superheat of 6-8°F. For high-glide refrigerants, use dew point for unit sizing. Adjust evaporator pressure as needed to maintain discharge air temperature. To receive the full benefit of high-glide refrigerant properties, the superheat may need to be lowered to 4-6°F. Contact Zero Zone with questions. Defrost Crystal Merchandiser® coolers can be set up with either off-cycle defrost or electric defrost. See Figure 34 for defrost settings. Figure 34: Defrost Settings SETTING COOLER Defrost Type Off-Cycle Electric Frequency 3 Per Day 2 Per Day Duration 45 Minutes 30 Minutes Case Thermometers The cases are shipped with 2 thermometers. One thermometer is factory-mounted to sense the discharge air stream (rear duct). A second NSF thermometer is shipped loose and should be installed in the warmest product location as required by NSF. Specific field installation instructions are packaged with the NSF thermometer. Refrigeration - Operation Set Points • 23 ELECTRICAL Electrical General DISCONNECT POWER TO THE CASE BEFORE SERVICING ELECTRICAL COMPONENTS TO AVOID PERSONAL ! CAUTION! INJURY AND DAMAGE TO THE UNIT. Cases may have 2 or 3 electrical circuits. Standard cases have 2 electrical circuits: the fan circuit and the lighting circuit. Cases may be purchased with heated doors, which add an additional electric circuit. The electrical box is mounted on the exterior top right of the case. The box includes the power connection and power supplies for the LED light sticks. The light switch is located on the interior ceiling to the right of the coil cover (See Figure 35). Black and white wires and wire nuts are supplied, and the wire nut must be connected inside the electrical box. A ground connection should also be connected inside the electrical box. Always refer to the wiring diagram shipped with the case (See Figure 36). Figure 36: Sample Wiring Diagram A S 24 • Electrical P M E l Figure 35: Light Switch MAINTENANCE Maintenance Cleaning Although each Zero Zone display case is thoroughly cleaned before shipping, the cases should be thoroughly cleaned again before start-up and routinely thereafter to maintain a clean appearance. With just a few minutes of cleaning each week, the case will remain in top condition. 1. Do not use high-pressure water or steam to clean the interior or any components. 2. Do not wash fan motors. A damp cloth can be used to wipe the fan motors. Cover the fan motors with a plastic bag when washing the case. 3. Wipe out the case interior using mild detergent and warm water (never an abrasive cleaner). 4. Clean all glass doors, windowed ends, and mirrors using glass cleaner. Cleaning interior glass reduces fogging and increases visibility. Do not use any cleaning products containing silicon for anti-fog. 5. The drain pan can be flushed after removing bottom wire racks. The coil can be cleaned after removing the false ceilings, fans, and fan plenums. 6. If the case is equipped with a condensate pan and pump, the drain should be blocked before washing coils. Water can be removed with a shop vacuum. 7. Coils may be cleaned with a garden hose or pails of water. If the case is equipped with a condensate pan and pump, cases should be cleaned with a minimal amount of water so the evaporator, pump, and drain pans do not get overfilled. 8. The case drain should frequently be cleaned of debris and price tags to prevent clogging. If water is rising, check if the drain is clogged. UNDER CASE FLOOR CLEANING (NSF) The floor under your Zero Zone display case can be cleaned by following these steps: 1. Remove the fasteners attaching the kickplate to the case. The fasteners are accessed from the front of the unit. 2. With the kickplates removed, remove debris from the floor. 3. Vacuum under the case to remove any dirt, debris, and dust build-up. 4. Mop under the unit using non-abrasive floor cleaner and warm water. 5. When finished mopping, squeegee any remaining water under the unit to the floor drains to speed up the drying process. Replace the kickplates when the floor has dried. Maintenance • 25 For other technical support, please refer to the Technical Resources page at: WWW.ZERO-ZONE.COM or contact the Zero Zone Service Department at: 800-247-4496 All specifications subject to change without notice. ZERO ZONE, INC. • 800-247-4496 • ZERO-ZONE.COM © 2022 Zero Zone, Inc. All Rights Reserved. • Jul 2022 66-0014 REV G ">

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Key features
- CoolView® Ultra™ Doors
- High-efficiency Evaporator Coil
- Brushless DC Electronic Motors
- NSF and UL Certified
- ChillBrite® LED Lighting
Frequently asked questions
CoolView® Ultra™ Doors are designed for maximum product visibility and are a key feature of the Zero Zone CRYSTAL MERCHANDISER RVMC30, providing a clear view of the displayed products.
The RVMC30 features Zero Zone ChillBrite® LED lighting for optimal product illumination and energy efficiency.
Yes, the RVMC30 is NSF and UL certified, ensuring it meets high-quality standards and safety compliance.
A minimum 3" of space is required behind the back of the unit for proper air circulation. A 2" gap is also recommended between cases on end-to-end installations.