Hussmann Rear Roll-in Dairy User manual

Rear Roll-in Dairy
Medium Temperature Free Standing or Suspended
Merchandisers Installed in Walk-in Cooler Exterior Walls
IMPORTANT
Keep in store for
future reference!
Installation &
Operation Manual
Shipped With Case Data Sheets
P/N 0485219_E
Excel Series
January 2022
Spanish 0532258
MANUAL- I/O EXCEL REAR ROLL-IN DAIRY
®
Æ

BEFORE YOU BEGIN
Read these instructions completely and carefully.
PERSONAL PROTECTION EQUIPMENT (PPE)
Only qualified personnel should install and service
this equipment. Personal Protection Equipment
(PPE) is required whenever installing or servicing this
equipment. Always wear appropriate PPE as required
by OSHA regulations, as well as all other federal,
state and local codes. PPE may include, but is not
limited to, safety glasses, gloves, protective boots or
shoes, long pants, and a long-sleeve shirt. Observe
all precautions on tags, stickers, labels and literature
attached to this equipment.
ANSI Z535.5 DEFINITIONS
• DANGER – Indicate[s] a hazardous situation
which, if not avoided, will result in death or
serious injury.
• WARNING – Indicate[s] a hazardous situation
which, if not avoided, could result in death or
serious injury.
• CAUTION – Indicate[s] a hazardous situation
which, if not avoided, could result in minor or
moderate injury.
• NOTICE – Not related to personal injury – Indicates[s]
situations, which if not avoided, could result in damage
to equipment.
The information contained in this document is the property
of Hussmann Corporation and shall not be used in whole
or in part without written permission.
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— LOCK OUT / TAG OUT —
To avoid serious injury or death from electrical shock,
always disconnect the electrical power at the main
disconnect when servicing or replacing any electrical
component. This includes, but is not limited to, such
items as controllers, electrical panels, condensers,
lights, fans, and heaters.
This manual was written in accordance with originally
prescribed equipment that is subject to change. Hussmann
reserves the right to change all or part of the
equipment for future stores such as, but not limited
to, controllers and electrical specifications.
Proper Field Wiring and Grounding Required!
Failure to follow code could result in death or serious
injury. All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards, you MUST follow requirements
for field wiring installation and grounding as described
in NEC and your local/state electrical codes.
Case tipping may occur if cases are not properly
leveled and secured.
Do not use mechanical devices or other means to
accelerate the defrosting process.
Do not use electrical appliances inside the food
storage compartments of the case(s).
Case ventilation openings must be clear of any
obstructions. Do not damage the refrigerant circuit.

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
P/N 0485219_E iii
Medium Temperature Excel
INSTALLATION
NSF Certification ................... 1-1
Model Description .................. 1-1
Location ........................... 1-1
Shipping Damage .................... 1-1
Exterior Loading .................... 1-2
Merchandiser Ends .................. 1-2
Shipping Braces ..................... 1-2
Leveling............................ 1-2
Installing D5XRRIS ................. 1-3
Installing D5XRRI .................. 1-5
Rear Curtain Installation ............. 1-5
Joining Instructions .................. 1-5
Installing Partitions .................. 1-5
REFRIGERATION / ELECTRICAL
Refrigerant ......................... 2-1
Refrigerant Piping ................... 2-1
Insulation .......................... 2-2
Suction Line ........................ 2-2
Liquid Line ......................... 2-2
Refrigeration Thermostat ............. 2-3
Defrost Termination ................. 2-3
Defrost Sequences ................... 2-3
Merchandiser Electrical Data .......... 2-4
Electrical Connections ................ 2-4
Field Wiring ........................ 2-4
Identification of Wiring ............... 2-4
Wiring Color Code .................. 2-4
DRIP PIPING AND SPLASHGUARDS
Waste Outlet ....................... 3-1
Installing Drip Piping................. 3-1
Sealing Splashguard to Floor .......... 3-1
START UP / OPERATION
Start up ............................ 4-1
Stocking ........................... 4-1
Optional Shelving ................... 4-1
Accessories ......................... 4-2
Load Limits ........................ 4-2
Installing FDA/NSF Thermometer ........ 4-2
MAINTENANCE
Care and Cleaning ................... 5-1
Cleaning Honeycomb Assemblies ....... 5-2
Removing Return Air Grille ........... 5-3
Cleaning Coils ...................... 5-4
Removing Scratches from Bumper ...... 5-4
SERVICE
Replacing Fan Motors and Blades ...... 6-1
Replacing Fluorescent Lamps .......... 6-2
Replacing Lamp Holders and End Caps.. 6-2
Replacing Ballasts ................... 6-3
Repairing Aluminum Coils ............ 6-4
WARRANTY
TABLE OF CONTENTS
IMPORTANT
KEEP IN STORE FOR FUTURE REFERENCE
Quality that sets industry standards!
12999 St. Charles Rock Road • Bridgeton, MO 63044-2483
U.S. & Canada 1-800-922-1919 • Mexico 1-800-522-1900
www.hussmann.com
© 2018 Hussmann Corporation

P/N 0485219_E U.S. & Canada 1-800-922-1919 • Mexico 1-800-522-1900 • www.hussmann.com
iv
REVISION HISTORY
REVISION E
1. Added Coil Cleaning note, Page 5-4
REVISION D
1. Updated California Warning
REVISION C
1. Revised Refrigerant, Page 2-1 UL
Listing/ Fed State Reg, Page1-1
REVISION B
1. Added Proposition 65 Warning
Statement
REVISION A
1. Revised to Excel, page 1-2, 1-3, 1-4, 2-1,
2-3, 3-1, 3-2, 4-2, 5-2.
REVISION HISTORY — Original Issue
This warning does not mean that Hussmann products
will cause cancer or reproductive harm, or is in
violation of any product-safety standards or
requirements. As clarified by the California State
government, Proposition 65 can be considered more of
a‘right to know’ law than a pure product safetylaw.
When used as designed, Hussmann believes that our
products are notharmful. We provide the Proposition
65 warning to stay in compliance with California State
law. It is your responsibility to provide accurate
Proposition 65 warning labels to your customers when
necessary. For more information on Proposition 65,
please visit the California State government website.
August 31, 2018

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
P/N 0485219_E 1-1
Medium Temperature Excel
NSF LISTING
These merchandisers are manufactured to meet
ANSI / UL 471 standard requirements for
safety. Proper installation is required to main-
tain this listing. Near the serial plate, each case
carries a label identifying the type of conditions
for which the merchandiser was tested.
ANSI/NSF-7 Type I – Display
Refrigerator / Freezer Intended for 75°F /
55%RH Ambient Application
ANSI/NSF-7 Type II – Display
Refrigerator / Freezer Intended for 80°F /
55%RH Ambient Application
ANSI/NSF-7 – Display Refrigerator
Intended for Bulk Produce
FEDERAL / STATE REGULATION
These merchandisers, at the time they are
manufactured, meet all federal and state /
provincial regulations.
MODEL DESCRIPTION
The D5XRRI and D5XRRIS models are
designed for installation against an opening in
the cooler wall. The merchandisers are open at
the rear. Once installed, product can be rolled
directly from the cooler through the rear of
the merchandiser into the refrigerated display
area.
The D5XRRI is a self-supporting model with
the canopy and front sections connected by
welded end supports.
The D5XRRIS is manufactured in two sections:
a Coil Package and a Front Package. The coil
package is to be suspended against the cooler
wall, above the opening, from an adequate
supporting structure in the store. The front
package completes the D5XRRIS model once
it has been aligned with the coil package and
anchored to the floor.
LOCATION
These merchandisers are designed for displaying
products in air conditioned stores where
temperature is maintained at or below the
ANSI/NSF-7 specified level and relative
humidity is maintained at or below 55%.
Like other merchandisers, these are sensitive to
air disturbances. Air currents passing around
cases will seriously impair their operation. Do
NOT allow air conditioning, electric fans, open
doors or windows, etc. to create air currents
around the merchandisers.
Product should always be maintained at proper
temperature. This means that from the time
the product is received, through storage, prepa-
ration and display, the temperature of the product
must be controlled to maximize the life of the
product.
INSTALLATION
Do NOT stand or walk on top of
merchandiser because. Do not place items
or flammable materials atop the unit.

1-2 InstallatIon
P/N 0485219_E U.S. & Canada 1-800-922-1919 • Mexico 1-800-522-1900 • www.hussmann.com
SHIPPING DAMAGE
All equipment should be thoroughly examined
for shipping damage before and during unloading.
This equipment has been carefully inspected at
our factory. Any claim for loss or damage must
be made to the carrier. The carrier will provide
any necessary inspection reports and/or claim
forms.
Apparent Loss Or Damage
If there is an obvious loss or damage, it must
be noted on the freight bill or express receipt
and signed by the carrier’s agent; otherwise,
carrier may refuse claim.
Concealed Loss Or Damage
When loss or damage is not apparent until
after equipment is uncrated, retain all packing
materials and submit a written request to the
carrier for inspection, within 15 days.
EXTERIOR LOADING
Do NOT walk on top of merchandisers or
damage to the merchandisers and serious
personal injury could occur. They are noT
sTrucTurally designed To supporT excessive
exTernal loading such as the weight of a
person. Do not place heavy objects on the
case.
MERCHANDISER ENDS
Ends for the D5XRRI and D5XRRIS rear
load dairy models are shipped separately to
be field installed after the merchandisers are
installed in the cooler wall. Refer to separate
instructions shipped with the ends.
SHIPPING BRACES
Move the merchandiser as close as possible
to its permanent location and then remove all
packaging. Check for damage before discard-
ing packaging. Remove all separately packed
accessories such as kits and shelves.
The D5XRRI is top-heavy and must be
supported and moved with care at all times
until it has been securely anchored. It must be
supported while it is being unfastened from
the skid and when it is removed from the skid.
Once the skid has been unfastened, never leave
the merchandiser unsupported or unattended
until it has been anchored.
Do NOT remove shipping braces until
the merchandisers are positioned
for installation. Once unfastened,
NEVER LEAVE THE MERCHANDISER
UNSUPPORTED OR UNATTENDED
until it has been anchored.

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
P/N 0485219_E 1-3
Medium Temperature Excel
Levels
Shim
LEVELING
Merchandisers must be installed level to ensure
proper operation of the refrigeration system
and to ensure proper drainage of defrost
water. When leveling merchandisers, use a
carpenter’s level as shown. Leveling shims are
provided with each merchandiser for use if
needed. The shims are long enough to allow
leveling of adjoining merchandisers at the
same time using only one shim.
NOTES:
• Begin lineup leveling from The highesT
poinT of The sTore floor.
• If shimming two corners, check to see if a shim
is needed in the center of the case. If a gap exists
between the support rail of the case and the
floor, a shim should be placed in the center.

1-4 InstallatIon
P/N 0485219_E U.S. & Canada 1-800-922-1919 • Mexico 1-800-522-1900 • www.hussmann.com
INSTALLING D5XRRIS
Overview
The coil package must be suspended above the
cooler wall opening from an adequate support
structure. It is imperative that both the meth-
od and the materials used to suspend the coil
package be of sufficient strength to support
the coil package.
These models are designed for use with roll-in
carts or free-standing (unattached) shelving.
DISCLAIMER: These methods of securing
the coil package are suggestions only. It is the
responsibility of the store designer, installer
and end user to ensure the store’s structural
capacity. Hussmann assumes no liability for
consequences resulting from failure of store
structure or material used in installation.
Two 15/8x 15/8inch (41 x 41 mm) channel
struts are provided for hanging the coil pack-
age. These struts extend the full length of the
case and are bolted to the case at the factory.
Use 1/2in. (12.7 mm) clamp nuts to secure the
hanging rods to the struts. Although these
struts allow flexibility in hanging rod location,
the end support rods must be within 12in.
(305mm) of the coil package end. For a 12ft
(3658 mm) coil package, the center hanging
rods must be within 12 in. (305mm) of the
center of the merchandiser.
Hanging Support Spacing
Case Coil Minimum Number of
Length Package 1/2in. dia. (12.7 mm)
ft (mm) Weight Threaded Drop
lb (kg) Rods Required
8 (2438) 485 (220) 4
12 (3658) 750 (340) 6
Cantilevered “I” Beam
Store Joist
Field Supplied
Suspending Rods
Channel Struts
Coil Package

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
P/N 0485219_E 2-1
Medium Temperature Excel
REFRIGERANT
The correct type of refrigerant will be stamped
on each merchandiser’s serial plate. The
merchandiser refrigeration piping is leak test-
ed, factory sealed and pressurized. Before
making refrigeration hookups, depress the uni-
versal line valve to ensure that coils have main-
tained pressure during shipment. When using
high glide refrigerants (e.g., R-407A, R-448A),
if superheat needs to be adjusted, use the evap-
orator pressure and subtract the dew point
from the coil outlet refrigerant temperature to
measure the superheat level.
REFRIGERANT PIPING
Connection Location
The refrigerant line connections are at the left-
hand end of the merchandiser (as viewed from
the front).
After connections have been made, seal this
outlet thoroughly. Seal both the inside and the
outside. We recommend using an expanding
polyurethane foam insulation.
Multiplexing
Multiplex piping must be run above the top of
the coil package in the area shown. Observe
proper suction pipe joining practices and
insulate all suction piping outside the merchandiser
to prevent drippage from condensate.
Line Sizing
Refrigerant lines should be sized as shown on
the refrigeration legend that is furnished for
the store or according to ASHRAE guide-
lines. Refer to the information on the next
page for branch line piping of Hussmann
Equipment.
Oil Traps
P-traps (oil traps) must be installed at the base
of all suction line vertical risers.
Pressure Drop
Pressure drop can rob the system of capacity.
To keep the pressure drop to a minimum, keep
the refrigerant line run as short as possible
using a minimum number of elbows. Where
elbows are required, use long radius elBows
only.
REFRIGERATION / ELECTRICAL
Refrigeration lines are under pressure
and should be depressurized before
attempting to make any connections.
When brazing pipes, be sure to use
the insulation blanket
shipped with the case
to prevent damage to the case.
CAUTION
!
WARNING
!
C
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O
L
E
R
W
A
L
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Piping Area
Coil Fan

2-2 RefRIgeRatIon / electRIcal
P/N 0485219_E U.S. & Canada 1-800-922-1919 • Mexico 1-800-522-1900 • www.hussmann.com
INSULATION
The suction and liquid lines should be clamped
or taped together and insulated for a minimum
of 30ft (9144mm) from the merchandiser.
Additional insulation for the balance of the
liquid and suction lines is recommended
wherever condensation drippage is objectionable
or lines are exposed to ambient conditions.
SUCTION LINE
• Pitch in direction of flow.
• May be reduced by one size at one third of
case run load and again after the second
third. Do not reduce below the case suction
line size.
• Merchandiser suction lines should enter at
the top of the branch line.
LIQUID LINE
• May be reduced by one size after one half
the case run load. Do not reduce below the
case liquid line connection size.
• Take-offs to merchandiser liquid lines
should exit the bottom of the branch liq-
uid line. Provide an expansion loop for
each evaporator take-off (minimum 3in.
[76mm] loop).
Suction Line Return
Offtime Defrost
Liquid Line
Suction Line
8 Ft Case
(2438 mm)
12 Ft Case
(3658 mm)
8 Ft Case
(2438 mm)
12 Ft Case
(3658 mm)
Minimum Loop
3-in. (76 mm)
Liquid Line Take Off