Zero Zone 2RMZC24 Installation Manual
ZERO ZONE
MEDIUM AND LOW TEMPERATURE
DISPLAY CASES
INSTALLATION & OPERATION MANUAL
CASE CLOSED
Rev A 1/7/13
TABLE OF CONTENTS
ZERO ZONE WARRANTY .................................................................. 1
INTRODUCTION .............................................................................. 2
Important User Information ........................................................ 2
Manufacturer ............................................................................ 2
Intended Use ............................................................................ 2
Display Case Models .................................................................. 2
Delivery Inspection .................................................................... 3
Packaging ................................................................................ 3
Location ................................................................................... 4
INSTALLATION ............................................................................... 5
Leveling ................................................................................... 5
MOVING CASES ............................................................................ 10
LINEUP ASSEMBLY ....................................................................... 12
DRAIN LINE ................................................................................. 16
BUMPER AND KICKPLATE ............................................................. 17
Installing End Kickplate ........................................................... 17
Installing Bumper ................................................................... 17
Under Case Return Air Flow Assembly Instructions ..................... 19
GENERAL INFORMATION .............................................................. 20
Cleaning ................................................................................. 20
Shelf Location ........................................................................ 20
Shelves .................................................................................. 20
Loading the Case .................................................................... 20
Light Switch ........................................................................... 21
Case Thermometer .................................................................. 21
Service ................................................................................... 21
REFRIGERATION ........................................................................... 23
General .................................................................................. 23
Low Temp ............................................................................... 26
Medium Temp ......................................................................... 28
ELECTRICAL ................................................................................. 29
General .................................................................................. 29
Low Temp ............................................................................... 32
Medium Temp ......................................................................... 36
DEFROSTING ................................................................................ 39
Low Temp ............................................................................... 39
Low Temp/Medium Temp ......................................................... 43
Medium Temp ......................................................................... 44
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). The obligation under this warranty shall be limited to repairing or
exchanging any part, or parts, without charge, FOB Factory, and which is proven to the satisfaction of Zero Zone’s 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 such 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 Company will extend to the original purchaser, 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 it’s “Service and Installation”
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. In those instances on manufactured systems where factory installed “Zero Zone Oil Management Systems” are purchased
the original limited warranty shall be extended automatically to two (2) years total and purchased extended warranties shall be extended
automatically for a total of six (6) years from the date of factory shipment. 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.
Zero Zone Warranty • 1
INTRODUCTION
IMPORTANT USER INFORMATION
Copyright © 2013 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, 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. If any questions or problems arise, call
Zero Zone at 800-247-4496.
Any change to a Zero Zone product made during the installation, startup, 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.
Display Case Division
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,
specications, drawings, and data. Always install Zero Zone products on a level surface.
The information contained in this manual pertains to Zero Zone Display Cases, which include the following:
DISPLAY CASE MODELS
LOW TEMPERATURE DISPLAY CASES MEDIUM TEMPERATURE DISPLAY CASES
RVZC30 RMZC24 RVCC30 RMCC24
RVZC30T2 3RMZC30WA RVCC30T2 3RMCC30WA
RVZC30BB 3RVZC30WAT2 RVCC30BB 3RVCC30WAT2
RVZC30T2BB RVCC30T2BB
2 • Introduction
INTRODUCTION
DISPLAY CASE MODELS (CONT.)
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 efciency evaporator coil. Potential case features include:
Brushless D.C. electronic motors, PSC*, or shaded pole fan motors*
T-8 uorescent lamps*
LED lighting
Standard-energy*, low-energy, or no-energy doors
These display cases were designed and tested using the following industry standards:
ASHRAE Standard 72-2005 — Method of Testing Commercial Refrigerators and Freezers (ANSI Approved)
AHRI 1200 — Performance Rating of Commercial Refrigerated Display Merchandisers and Storage Cabinets (ANSI Approved)
UL 471- Commercial Refrigerators and Freezers (ANSI Approved) (equipment certied by ETL)
NSF 7- Commercial Refrigerators and Freezers (ANSI Approved) (equipment certied by NSF)
DOE Compliant (All U.S. Sales)
ASHRAE 72-2005 species the test conditions for the equipment. It includes the ambient conditions of 75°F dry bulb and 55% RH.
It also species the door opening requirements for the performance test. Doors are opened 6 times in 1 hour for 6 seconds. The door
opening test period is for 8 hours during one 24-hour performance test. As an example, a 5-door case will have 240 door openings
during one 24-hour test. Consult the factory if your store exceeds these test conditions.
*Not for U.S. Sales
DELIVERY INSPECTION
These display cases were carefully factory-tested, inspected and properly packed to ensure delivery in the best possible condition.
The equipment should be uncrated 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.
PACKAGING
Each case in a lineup is labeled to identify the lineup and joint. The label uses a number and letter designation. The number indicates
the lineup. The letter indicates the case joint. Case joints begin with the letter A at the left most joint in the lineup when looking at the
front of the lineup. The joint for two cases has the same number-letter designation (Figure 1 on page 4). Back-to-Back cases have a
unique designation. The left most joint in the lineup when looking at the front of the case is labeled 1-A. The joint on the back of the case
is 1-A1 (Figure 1 on page 4).
Insulated dividers are factory installed to separate low and medium temperature cases. They are also used to join different case models.
Factory installed plexiglass dividers separate refrigeration circuits.
The rst case in the lineup (with the right side labeled “A”) has a packet attached to the door handle that contains the manual, special
instructions for installing ordered options, and touch-up paint if the cases are custom painted. Every case in the lineup has a packet
attached to the door that contains the specic information for that case. The packing slip is taped to the right-hand door of each case.
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 channels are shipped in the case that require the parts.
Materials for joining cases include caulk, joining bolts, splices, and T or J strips. These parts are supplied in cases that have a left-side
insulated divider or no left end. The parts are bagged and taped to the coil covers. The T and J strips are tied to the shelves.
Introduction • 3
INTRODUCTION
LOCATION
These cases must not be installed in the direct rays of the sun or near a source of radiant heat.
Be certain that the oor under the installation is of sufcient strength to prevent sagging. Out of level conditions will result in reduced
performance.
Wall cases (cases set with a back to a wall) and cases set back-to-back, should be positioned to allow a minimum 2-4" space behind the
back of the unit(s). This will allow necessary air to circulate behind the display case(s). Higher humidity stores with minimal air circulation
require a 4" gap.
Figure 1: Case Label Information
4 • Introduction - Location
INSTALLATION
LEVELING
Cases must be installed perfectly level to allow efcient operation of the
refrigeration coils and complete drainage of defrost water. Since a level
area is seldom available, the following steps are recommended to insure a
level installation.
1. Measure off and mark on oor the exact dimensions of the case
lineup (Figure 2A). (Check blueprints).
2. Snap a chalk line at the locations for the front and back positions
of the bases.
3. Mark locations of all joints (front and back).
4. Using a laser or transit, nd the highest point along both base rail
position lines. Using the high point as a reference, mark the difference
directly on the oor to each joint, front and back (Figure 2B).
5. If you plan on using optional hat channels to raise the case height,
place them under each pair of bases. The 3 and 4-door hat channels
will be angled slightly to support the front and rear bases. (Figure 3
on page 6 and Figure 5 starting on page 7).
6. Place the required number of shims under each base or optional hat
channel at each joint (front and back) to equal the highest point.
7. The RVZC30, RMZC24, RVCC30 and RMCC24, 2 through 5-door
cases, have segmented bases mounted at the ends and under the
center section of the case. The RVZC30 and RVCC30 1-door and
RVZC30BB and RVCC30BB have full bases that run front to back
and are located at the ends and under the center sections of the case.
The 3RMZC30WA and 3RMCC30WA have segmented bases that run
front to back.
8. Tape all shims in place (Figure 2C). Figure 4 on page 6 shows
the correct orientation of shims under the base or channel.
Figure 2: Leveling Cases Prior to Joining
A. Measure and mark exact case outline
B. Mark oor level differences
9. Place additional support shims under all other bases or hat channels
(Figure 5 starting on page 7).
10. Use a carpenter’s level to check installation as you go. The case
should be level from front to back and side to side. Install the case
at the highest point rst, if part of a lineup. Check the level on the
face of the glass doors and sides of the mullions. Do not use the
ceiling to check level.
11. If you’ve purchased seismic restraints, specic instructions for
attaching those restraints are included in your document package.
These instructions should be read and followed before the lineup
is assembled.
C
a
s
e
F
ro
nt
Case Fro
nt
C. Shim joints to equal highest points
Installation - Leveling • 5
RELEASED
INSTALLATION
RELEASED
LEVELING (CONT.)
Figure 3: Typical Hat Channel Locations
Base
Shim
Base
Shim
Hat Channel
Case
Figure 4: Shims Under Bases and Case
Shims
Shims
DWG. NO. SP-6003-1 REV. A
Case
Both corners of the base
must be supported by shims
to prevent base buckling
6 • Installation - Leveling
DWG. NO. SP-6006-1 REV. A
INSTALLATION
LEVELING (CONT.)
Figure 5: All Base Locations
A. 1-Door Case B. Wrap Around Case (WA)
C. 24" 2-Door Case D. 24" 3-Door Case
Installation - Leveling • 7
INSTALLATION
LEVELING (CONT.)
E. 30" 2-Door Back-to-Back Case F. 30" 3-Door Back-to-Back Case
Figure 5: All Base Locations (Cont.)
8 • Installation - Leveling
G. 30" 4-Door Back-to-Back Case
INSTALLATION
LEVELING (CONT.)
Figure 5: All Base Locations (Cont.)
H. 30" 2-Door Case
I. 30" 3-Door Case
J. 30" 4-Door Case
K. 30" 4-Door Case
Installation - Leveling • 9
MOVING CASES
The Back-to-Back cases are shipped with wood planks that allow the use of pipe rollers. These wood planks should be removed after the
case is moved to its nal location (Figure 6 on page 11).
The RVCZ and RVCC and BB cases have steel protective support plates under the ends (not under insulated dividers). These are
designed to protect the end from Johnson Bar damage.
Use the following methods to move the cases:
MODEL
RVZC30 & RMZC24
RVZC BB
RVZC WA
1-Door RVZC
RVCC30 & RMCC24
RVCC BB
RMCC WA
1-Door RVCC
* Fork lift from rear
Care should be taken when moving the cases. The doors should be secured so they cannot open while the case is moved.
Only experienced certied fork truck drivers should use fork trucks to move the cases. The case should only be lifted off the oor as high
as necessary for transport. The fork truck should be driven slowly avoiding any abrupt motions or bumps.
The cases have steel protective support plates under the ends (not under insulated dividers). These are designed to protect the end
panel from J-bar damage.
Care should be taken when moving the cases. The doors should be secured so they cannot open while the case is moved.
FORK LIFT
FROM ENDS
*
*
*
JOHNSON
BAR
FURNITURE
DOLLY
PIPE
ROLLERS
SAFE (CASE)
JACKS
Only experienced certied forklift drivers should use forklifts to move the cases. The case should only be lifted off the oor as high as
necessary for transport. The forklift should be driven slowly, avoiding any abrupt motions or bumps.
The following forklift dimensions must be maintained to avoid damaging the case when it is lifted:
2-DOOR CASES
Forks must extend from 26" to no more than 30" under the case.
3-DOOR CASES
Use 48" long forks!
Forks must extend from 39" to no more than 43" under the case.
4 & 5-DOOR CASES
Use 48" long forks!
Fork blades wider than 4" will not t in the bases.
10 • Moving Cases
MOVING CASES
Spacer blocks are factory installed in the end bases of 4 and 5-door cases that use 4 ½" bases (Figure 7). These blocks limit the cases
forward tilt while it is being lifted and must be used when lifting 4 or 5-door cases with 4 ½" bases.
For low shipping height applications, Zero Zone has optional expandable bases. As shipped, the base is 1¾" tall. It is attached with
spacers that allow the base to slide away from the bottom of the case creating a gap that allows the use of a 1½" thick fork truck blade
(Figure 8).
Figure 6: Removing Wood Planks
Figure 7: Wood Block Inside Base
Figure 8: Expandable Base
Spacers
Moving Cases • 11
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