Hussmann BEXDWG User manual

BEXDWG
Low Temperature
Single Deck Merchandisers
Installation &
Operation Manual
Shipped with Merchandiser
Data Sheets
P/N 3093114_A
Excel Series
April 2019
IMPORTANT
Keep in store for
future reference!
MANUAL- I/O BEXDWG
®
Æ
Spanish 3093115
ULUS
C
LISTED
BEXDW8G

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
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
BEFORE YOU BEGIN
Read these instructions completely and carefully.
PERSONAL PROTECTION EQUIPMENT (PPE)
Personal Protection Equipment (PPE) is required whenever installing or servicing this equipment. Always wear
safety glasses, gloves, protective boots or shoes, long pants, and a long-sleeve shirt.
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 1-800-890-2900
www.hussmann.com
© 2019 Hussmann Corporation
®
®
®
®
®
P/N 3093114_A

P/N 3093114_A iii
ANSI Z535.5 DEFINITIONS ................... v
EXCEL INSTALLATION TOOL LIST .......... v
INSTALLATION
UL Listing .................................1-1
Federal / State Regulations ....................1-1
Location ...................................1-1
Shipping Damage ...........................1-1
Unloading .................................1-2
Serial Plate Location .........................1-2
Exterior Loading ............................1-2
Merchandisers Shipped with
End Installed ..............................1-2
Shipping Braces .............................1-2
Shipping Rider ..............................1-3
Merchandiser Leveling .......................1-3
Joining Instruction ..........................1-4
Joining Merchandisers in Line .................1-5
Parent to Parent Installation .................1-8
Fasten End Frames .........................1-9
Seal Merchandisers ........................1-10
Install Splashguard Brackets .................1-10
Replacing Interior Panels and Discharge
Air Louvers...............................1-10
Offsetting Bumper ..........................1-11
Bumper Removal .........................1-11
Offsetting Bumper (for End Merchandisers) ....1-12
Offsetting Bumper (for Merchandiser Lineup) ...1-13
Installing End Assemblies ....................1-14
REFRIGERATION / ELECTRICAL
Refrigerant .................................2-1
Refrigerant Piping ...........................2-1
Connection Location ...................... 2-1
Multiplexing ............................. 2-2
Line Sizing ............................... 2-2
Oil Traps ................................ 2-2
Pressure Drop ............................ 2-2
Insulation ..................................2-3
Branch Line Piping ..........................2-3
Suction Line - All Defrost .................. 2-3
Liquid Line — Off-time and Electric Defrost.... 2-4
Liquid Line — Koolgas Defrost .............. 2-4
Front to Rear and/or End Interconnects .........2-4
Refrigeration Thermostat .....................2-4
Defrost Termination Thermostat ...............2-4
CDA Sensor (Optional) ......................2-4
Merchandiser Electrical Data ..................2-5
Field Wiring ................................2-5
Electrical Connections ........................2-5
Identification of Wiring .......................2-5
Wiring Color Code ........................ 2-5
DRIP PIPING AND SPLASHGUARDS
Waste Outlet and Water Seal...................3-1
Installing Drip Piping.........................3-2
Drip Piping Lineup Arrangements ..............3-3
Installing Splashguards .......................3-4
Installing Splashguards on End and End Case ....3-6
START UP / OPERATION
Start up ....................................4-1
Stocking ...................................4-1
Load Limits ................................4-1
Installing FDA/NSF
Required Thermometer .......................4-1
Load Limit Profiles ......................... 4-2
MAINTENANCE
Care and Cleaning ...........................5-1
Fan Plenum ...............................5-1
Exterior Surfaces ...........................5-1
Interior Surfaces ...........................5-1
Cleaning Airflow Louvers .....................5-2
Cleaning Wire Racks, Pans,
and Interior Panels .........................5-2
Cleaning Stainless Steel Rails ..................5-2
Cleaning Coils ..............................5-3
Removing Scratches from Bumper ..............5-4
Cleaning Under Merchandisers ................5-4
SERVICE
Replacing Fan Motors and Blades ..............6-1
Replacing Nosing Anti-sweat Heater ............6-2
Replacing Panel Edge Guard ..................6-3
Repairing Aluminum Coil .....................6-4
WARRANTY
TABLE OF CONTENTS

iv
U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • WWW.HUSSMANN.COMP/N 3093114_A
* * * * * * * * * * * * * * * * * * * * * * * * * *
ANSI Z535.5 DEFINITIONS
• DANGER – Indicate[s] a hazardous sit-
uation 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.
EXCEL INSTALLATION
TOOL LIST
Unloading From Trailer:
Lever Bar (also known as a Mule,
Johnson Bar, J-bar, Lever Dolly
Setting Merchandiser Line-Up:
Level, 4 ft suggested
Ratchet
¼in. Socket
5/16 in. Socket
½in. Socket
Battery Drill/Screw Gun
Caulking Gun
10 in. Adjustable Crescent Wrench
REVISION HISTORY
REVISION A
ORIGINAL ISSUE — APRIL 2019
!
!
!
Merchandiser must operate for 24 hours
before loading product!
Regularly check merchandiser temperatures.
Do not break the cold chain. Keep products
in freezer before loading into merchandiser.
These merchandisers are designed
for only pre-frozen products.
AT TENTION
Merchandiser must operate for 24 hours before
loading product!
Regularly check merchandiser temperatures.
Do not break the cold chain. Keep products in freezer
before loading into merchandiser.
Medium temperature merchandisers are designed for
loading ONLY pre-chilled products.
Low temperature merchandisers are designed for
loading ONLY frozen products.
Do NOT remove shipping crate until
the merchandiser is positioned for
installation.

BEXDWG
P/N 3093114_A 1-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
UL LISTING
These merchandisers are manufactured to
meet ANSI/ UL 471 standard requirements
for safety. Proper installation is required to
maintain the listing.
FEDERAL / STATE REGULATION
These merchandisers at the time they are
manufactured, meet all federal and state/
provincial regulations. Proper installation
is required to ensure these standards are
maintained. Near the serial plate, each
merchandiser carries a label identifying the
environment for which the merchandiser was
designed for use.
ANSI/NSF-7 Type I – Display Refrigerator / Freezer
Intended for 75°F (24°C) / 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
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%.
Placing refrigerated merchandisers in direct
sunlight, near hot tables or near other heat
sources could impair their efficiency.
Like other merchandisers, these are sensitive to
air disturbances. Air currents passing around
merchandisers 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,
preparation and display, the temperature of the
product must be controlled to maximize the life
of the product.
Excel wall models have internal frames. A
3inch (76 mm) space between the rear of the
merchandiser and wall must be maintained
for air circulation. However, in high ambient
conditions, sweating may still occur.
If this happens install a method of forced
ventilation such as a fan ventilation kit.
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.
INSTALLATION

1-2 InstallatIon
P/N 3093114_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • WWW.HUSSMANN.COM
AVOID SERIOUS PERSONAL INJURY. Up-tilt
riders are top-heavy and may fall over.
Never leave uptilt rider in vertical position.
Use caution when moving.
Do not remove shipping braces until the
merchandisers are positioned for installation.
Do not stand or walk on top of merchandiser
because falling off could cause personal injury.
Serial Plate Behind Return Air Grille and Interior Rear Panel
UNLOADING
Improper handling may cause damage to the
merchandiser when unloading.
To avoid damage:
1. Do not drag the merchandiser out of the
trailer. Use a Johnson bar (mule).
2. Use one dolly to remove the merchandiser
from the trailer.
3. Use two dollies to move cases to lineup.
SERIAL PLATE LOCATION
Direct a flashlight through the return air grille
to locate the serial plate.
The front of the merchandiser is readily
identified by the location of the serial plate
affixed to the inside of the left front assembly.
Since all electrical and refrigeration connections
will be made at the front side, the fronts will
need to be positioned according to the store
plan layout. A secondary serial number sticker
is put on the exterior nosing on the discharge
side. It provides the model, serial number and
manufacture date.
EXTERIOR LOADING
Do NOT walk on top of merchandiser because
damage to the merchandiser 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 merchandiser.
MERCHANDISERS SHIPPED
WITH END INSTALLED
Be careful not to damage the factory installed
end while moving the merchandiser. Make sure
that lifting tools are positioned past the end
and beneath the support bar.
SHIPPING BRACES
Move the merchandiser as close as possible
to its permanent location and then remove all
packaging. Check for damage before discarding
packaging. Remove all separately packed
accessories such as kits and pan displays.
Remove end braces, and discard hardware.
Exercise caution at all times when moving
merchandisers with up-tilt riders. They are top-heavy
and should never be left in the vertical position.
BEXDW8G

BEXDWG
P/N 3093114_A 1-3
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
SHIPPING RIDER
Each case is shipped on a rider to protect the
factory installed legs, and to make positioning
the merchandiser easier. DO NOT remove the
rider until the case has been positioned. Once the
rider is removed, the case must be lifted –NOT
PUSHED– to reposition. To remove the rider,
remove bolts attaching rider to each leg.
MERCHANDISER LEVELING
Merchandisers must be installed level to ensure
proper operation of the refrigeration system
and to ensure proper drainage of defrost
water. During all steps of setting, joining and
leveling merchandisers, close attention to
position and operation must be maintained.
NOTE: Begin lineup leveling from the
highest point of the store floor.
Preparation
1. Using store blueprints, measure and mark
on floor the exact dimensions/locations of the
merchandiser footprint. A three (3) inch space is
required behind each wall merchandiser, or lineup
of merchandisers to prevent condensation. A three
(3) inch space is also required at ends of merchandiser,
or merchandiser lineup to prevent condensation.
2. Snap a chalk line for the front and rear
positions of the base legs.
3. Mark the location of each joint from front
to back lines.
4. FLOORS ARE NOT LEVEL!!! When
joining two or more merchandisers, all cases in
the lineup must be leveled on the same plane,
left to right and front to back. This means that
the entire lineup must be brought up to the
level of the highest merchandiser in the lineup.
Along the lines previously marked, find the
highest point of the floor by:
• Walking the floor and noticing any dips
or mounds;
• Using a string level or laser level; and
• Using a transit.
Leveling
Position the first merchandiser at the highest
point on the floor. Work outward from that
point to create the merchandiser line-up.
Use a 48 inch (1220mm) or longer level for
end-to-end leveling. The discharge nosing of
the merchandiser is a good location for the
level at the rear of the merchandiser (center of
wide island), and the handrail or return nosing
is a good location for the level at the front of
the merchandiser.
For leveling the merchandiser front-to-rear,
a 24 inch (610 mm) level should be placed on
the flange of the merchandiser end frame.
Suggested level locations are shown in the
following illustrations on the next page.

1-4 InstallatIon
P/N 3093114_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • WWW.HUSSMANN.COM
Leveling Wall Merchandisers
Level the case by all four corners. Start at the
rear by placing the provided shims as needed
under each end of the rear base rail. The shims
are long enough to allow adjoining wall cases
to be leveled with the same shim. When the
rear of the case is level end-to-end, move to the
front of the case. Use shims as needed at each
front corner so that the front is also level from
end-to-end and front-to-rear.
The merchandiser should be solidly supported
at least every 4 feet (1220mm). Once the
merchandiser is level, if any gaps are present
under the base rail, shims should be inserted
approximately in line with the center front
support legs to support the rear of the case.
At the front of the case, insert shims under
each of the center legs so that they support the
front of the merchandiser.
Leveling Island or End Merchandisers
Position the first merchandiser at the highest
point. Set a long level (4 ft [1220 mm] or more)
on top of the discharge air flue. Insert shims until
the merchandiser is level from end to end and
from front to back.
NOTE: To avoid removing concrete flooring,
begin lineup leveling from the highest point of
the store floor.
JOINING INSTRUCTIONS
Sectional construction means that two or more
merchandisers may be joined in line yielding
one long continuous display requiring only
one pair of ends.
all joinTs musT be airTighT To prevenT
formaTion of ice or condensaTion.
Prep Merchandiser
1. Check to be sure that merchandisers are
level. Locate Joining Kit and check contents.
2. Remove wire racks and display pan.
Before removing interior front and back
panels, remove the fasteners holding the
retainers for the discharge air louvers.
(Lift louvers up and out from the bottom.)
Remove any return air flue plex-glass parts.
(Lift up on interior panels to remove.)
Apply Gaskets to Right End
1. Apply the 15/8in. (41mm) gasket around
the perimeter of the merchandiser as shown.
It must be at the edge. Check to be sure
that there are no gaps between gasket and
merchandiser.
Remove Bolts from Front

BEXDWG
P/N 3093114_A 1-5
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
2. Apply the 1in. (25mm) gasket across the
end shoe as shown. Each end of the gasket
should extend onto the 15/8inch gasket but
not over. Check to be sure that there are no
gaps between merchandiser and gaskets.
3. Apply the 1in. (25mm) gasket at the top
of the discharge and return air flues as shown.
NOTE: When adding an end merchandiser,
apply gaskets to the island, not the end
merchandiser.
JOINING MERCHANDISERS IN LINE
1. Remove and retain any factory-installed
fasteners.
2. Move merchandisers in lineup as close as
possible by pushing or using lever bar (mule).
3. Verify upper front panel, front panel,
bumper retainer, and top rail alignment before
joining merchandisers, and shim as necessary.
Panels and top rail must have equal overhang
at each end of merchandiser.
A 3-inch space is required from walls
at rear and ends of merchandiser(s)
to prevent condensation.
IMPORTANT
• Do not stretch gasket,
especially around corners.
• Do not butt gaskets;
always overlap them as shown.
• Remove paper backing
after gasket has been applied.
• Perimeter gasket is required by NSF.
Lap Gasket(s)

1-6 InstallatIon
P/N 3093114_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • WWW.HUSSMANN.COM
NOTE: Merchandisers must be leveled before
joining. Verify all top rails, panels and
bumper retainers of each merchandiser to be
joined align vertically before joining.
To correct vertical alignment of top rails and
upper front panel, adjust shims as necessary.
Verify alignment of panels, bumper retainer and
top rail.
Shim cases to ensure vertical alignment of panels
and top rails.
4. Align frame fasteners. Fastener size and
location are detailed on Pages 1-8 and
1-9. Loosely assemble bolt, washers, lock-
washer and nut as shown here.
For glass cases, remove nut retainer clips in
one of the case’s end frame for each pair of
cases joined in the lineup.
Note that aligNmeNt order is differeNt from
tighteNiNg order!
Do not attempt to draw merchandisers together
using nut and bolt.
Insert Shim
BEXDW8G
Shim
NOTE: Do not place levels on Display Pans
or on Racks.
Shims
NOTE: Joining hardware is shown enlarged for clarity.

BEXDWG
P/N 3093114_A 1-7
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
6. Join bumper retainers.
Joining brackets are installed in factory. Be
sure to loosen joining bracket screws before
tightening and joining the bumper brackets.
Tighten the screws of joining brackets after
tightening the other screws according to the
tightening order as shown on Page 1-9.

1-8 InstallatIon
P/N 3093114_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • WWW.HUSSMANN.COM
Parent-to-Parent Installation
Loosely fasten 5/16-18 X 1 3/4 in. Hex Head
Screw from provided case packout kit as
shown in locations circled in the image below.
Use a socket with a U-joint
adjustable adapter to more
easily tighten fasteners.
BEXDWG JOINING LOCATIONS

BEXDWG
P/N 3093114_A 1-9
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
Fasten End Frames
1. Tighten joints in the order shown until
gaskets are compressed, and merchandisers
join smoothly. Work from the lower front to
lower back to upper back. Fasten the upper
front last.
Tighten in Order Shown
BEXDWG TIGHTENING ORDER
5
3
1
4
2
6
7

1-10 InstallatIon
P/N 3093114_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • WWW.HUSSMANN.COM
Splashguard
Bracket
Screw Leg
Anti-Sweat Heater
Plastic Nosing
Discharge Air Louver
Louver Retainer
Retainer Fastener
DETAIL
Seal Merchandisers
1. Remove wire rack, rack supports and
interior panels to apply butyl tape.
2. Apply butyl tape across the bottom joint.
Be sure to extend the tape up the back and
front of the merchandiser.
Silicone sealer may be applied around joining
bolts on both sides in bottom shoe.
INSTALLING SPLASHGUARD
BRACKETS
Position splashguard brackets to the
merchandiser and level to the floor. Each
bracket has a 11/2in. (38mm) slot at the
rear of the bracket where it attaches to the
merchandiser. Tighten screws to secure the
brackets.
Important: Install splashguard brackets before
installing drip piping.
REPLACING INTERIOR PANELS AND
DISCHARGE AIR LOUVERS
After case joining is complete and all joining
bolts are fastened, re-install the interior front
and back panels. Special care needs to be taken
when re-installing the discharge air louvers. The
flange at the top of the louver must properly
fit into the correct position in the extrusion.
Incorrect position of the louver can cause
the plastic nosing on the anti-sweat heater to
become dislodged. See details in Section 6 for
correct steps to re-install plastic nosing extrusion.

BEXDWG
P/N 3093114_A 1-11
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
OFFSETTING BUMPERS
Offsetting the bumper helps to disguise the
joint locations, giving the lineup a smoother
look.
Note: The Excel low
temperature case
BUMPERS ARE
DIRECTIONAL.
Look for an arrow
inside the bumper.
Bumper Removal
Although bumpers can usually be removed by
hand, a simple tool to remove bumpers can
be created by wrapping tape over the claw of
a small pry bar as shown here. The pry bar is
available at most local hardware stores.
Place the padded pry bar below the bumper
as shown below. The tape/padding lessens the
chance of damaging the color panel.
Do not use a screwdriver or other sharp
object, which will damage bumper and color
panel.
Pull
Bumper
Internal
Joint Trim
DO NOT USE SHARP OBJECT
Bumper
Color Panel
Padded Pry Bar

1-12 InstallatIon
P/N 3093114_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • WWW.HUSSMANN.COM
Offsetting Bumper (for End Merchandisers)
1. Locate starter bumper shipped with the
left-end kit.
2. Remove factory installed bumper by pulling
bumper away from bumper retainer. Be careful not
to lose the internal joint trim on the bumper.
3. Starting at the left end of the lineup, install
the bumper starter section first. To install:
a. Position internal joint trims so that
the first is flush to the left-end panel and
the second is centered between the starter
bumper and the full-length bumper as
shown.
b. Install full-length bumpers and internal
trims offset across joints. Make sure that
no gaps exist between sections. Continue
installing the bumpers the length of the
lineup.
4. Once all except the last section of bumper
have been installed, refrigerate the merchan-
diser lineup for at least six (6) hours. The last
section of bumper should be kept inside a cooler
or refrigerated merchandiser during this time.
This will allow the bumper to contract.
5. Go to the right end of the lineup and tap
the bumper to close any gaps.
6. Measure and cut last
section of bumper. Use a miter
box and fine-tooth saw to cut
last bumper to length. Install
the last section.
7. Remove protective film
from bumper once installation
is complete.
Bumper
Miter Box
Merchandiser
Joint
Starter
Bumper
Full Length
Bumper
Internal Joint Trims

BEXDWG
P/N 3093114_A 1-13
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
Offsetting Bumper (for Merchandiser Lineup)
1. Locate bumpers for the sides of the
lineup. The bumpers are shipped with the
merchandisers.
2. Refrigerate the merchandiser lineup for at
least six (6) hours. The offsetting bumpers sections
should be kept inside a cooler or refrigerated
merchandiser during this time. This will allow
the bumper to contract and provide for a good
fit and finish.
3. To install offsetting
bumpers:
a. Remove bumpers from
cooler. Measure bumpers and
cut to appropriate length. Use
a miter box and fine-tooth
saw.
b. Insert internal joint trims
first. Install bumpers offset across
joints along the side of the lineup
as shown in the illustration below.
Joint trim provides stability for the
bumpers, and lends to a smooth fit
and finish.
4. Make sure no gaps exist between sections
at each end of field cut bumpers.
5. Verify fit and finish at both sides of corner
extrusion. If bumpers are cut too long, the
corner extrusion may bow out, resulting in an
unattractive finish.
6. Remove protective film from bumper once
installation is complete.
Bumper
Miter Box

1-14 InstallatIon
P/N 3093114_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • WWW.HUSSMANN.COM
Seal Glass Front
Apply
Silicone
Sealant
Apply
Silicone
Sealant
Apply
Silicone
Sealant
Apply
Silicone
Sealant
INSTALLING END ASSEMBLIES
End assemblies are normally factory installed.
The following information is provided for
retrofit or field installation.
1. Prepare Merchandiser
a. Remove display racks, pans, front rack
supports and front air grilles from section
of case where end is to be installed.
b. Remove the interior back panel.
No tools required.
2. Apply gaskets to end frame
3. Fasten End Assembly to Merchandiser
a. Use Bolt and washer to fasten end
assembly to merchandiser in the same way
the end merchandiser is fastened.
b. Tighten in order shown for joining.
4. Seal End to End Frame
Remove front shelf and shelf support bracket.
Apply a 1/2in. bead of Silicone at the back of
the case, starting at the first slot. Continue
across the bottom and up the front as shown
below. Use field-supplied silicone in any gap
between front support bracket and end assembly.
Re-install bumpers as described beginning on
Page1-13.
5. Install End Splashguard Bracket
Insert back of bracket through slot in leg.
Use Screws to attach End Splashguard
Retainer to end frame.
INSTALLING PARTITIONS
To join same temperature fixtures on differ-
ent defrost cycles, an acrylic partition kit is
required.
To join unlike fixtures, or like fixtures operating
at different temperatures, an insulated partition
kit is required. It must be installed when setting
the lineup. Instructions for installing these
partitions are included with the kits.

BEXDWG
P/N 3093114_A 2-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
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
right- hand end of merchandiser (end opposite
the main serial plate) beneath the display pans.
A sticker marks the location of the connection.
The installer must saw a hole to exit the cases.
A refrigeration shroud ships with each case.
Before making connections, place the refriger-
ation shroud over refrigeration piping so that
when the shroud is rotated into place, it will be
in the upright position. The Figure 2-1 shows
the correct orientation.
Be careful not to burn, scorch or overheat the
shroud when making connections. Once
connections have been made, apply silicone
sealant to the bottom of the shroud as shown
in Figure 2-2.
REFRIGERATION / ELECTRICAL
Figure 2-2
Refrigerant vapor is hazardous to your health and
can cause death.
Avoid breathing refrigerant and lubrication vapor or
mist. Exposure may irritate eyes, nose and throat.
If accidental system discharge occurs, ventilate
work area before resuming service.
Always wear safety goggles and protective gloves
when working with refrigerants. Contact with
refrigerant may cause injury. Disconnect hoses
with extreme caution! All hoses may contain liquid
refrigerant under pressure.
Be sure that any room where you are working is
thoroughly ventilated, especially if a leak is sus-
pected.
Read all safety information regarding the safe han-
dling of refrigerant and refrigerant oil, including
the Material Safety Data Sheet. MSDS sheets can
be obtained from your refrigerant supplier.
Refrigeration lines are under pressure and
should be depressurized before attempting to
make any connections.
Figure 2-1

2-2 RefRIgeRatIon / electRIcal
P/N 3093114_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • WWW.HUSSMANN.COM
As shown in Figure 2-3, rotate and center the
shroud over the refrigeration outlet foam pad,
then fasten to the interior liner of the bottom.
After connections have been made, seal this
outlet thoroughly. Seal both the inside and the
outside. We recommend using an expanding
polyurethane foam insulation. Cover foam
with silicone to prevent water from entering
foam.
Multiplexing
Piping of merchandisers operating on the same
refrigeration system may be run from case
to case. donoT run refrigeranT lines
Through merchandisers ThaT are noT on
The same refrigeraTion sysTem branch
as this may result in poor refrigeration control
and compressor failure.
Interconnecting piping inside the merchandiser
must be located as shown below for clearance
beneath the display pans. Alternately, the
interconnecting piping may be run outside the
case in the area shown.
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.
Note: If Koolgas defrost is used, the liquid
line will need to be increased two sizes larger
inside the merchandiser area. This is neces-
sary to ensure even liquid drainage from all
evaporators during defrost.
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.
Figure 2-3