Hussmann EXCEL PW Supplement

Medium Temperature
Bulk Produce and Bakery
Merchandisers
IMPORTANT
Keep in store for
future reference!
Installation &
Service Manual
Shipped With Case Data Sheets
P/N 0518258_D
January 2022
Spanish P/N 0538840

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.

P/N 0518258_D iii
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
© 2022 Hussmann Corporation
INSTALLATION
NSF Certification . . . . . . . . . . . . . . . . . . . 1-1
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Shipping Damage . . . . . . . . . . . . . . . . . . . . 1-1
Exterior Loading . . . . . . . . . . . . . . . . . . . . 1-2
Merchandisers Shipped with End Installed 1-2
Shipping Braces . . . . . . . . . . . . . . . . . . . . . 1-2
Leveling . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Joining Instructions . . . . . . . . . . . . . . . . . . 1-2
Splashguard Bracket and Joint Support . . 1-6
Offsetting Bumpers and Top Rail . . . . . . . 1-6
Installing Partitions . . . . . . . . . . . . . . . . . . 1-8
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 Thermostat . . . . . . . . 2-3
Defrost Sequences . . . . . . . . . . . . . . . . . . . 2-3
Merchandiser Electrical Data . . . . . . . . . . 2-4
Electrical Connections . . . . . . . . . . . . . . . . 2-4
Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Identification of Wiring . . . . . . . . . . . . . . . 2-4
DRIP PIPING AND SPLASHGUARDS
Waste Outlet and Water Seal . . . . . . . . . . . 3-1
Installing Drip Piping . . . . . . . . . . . . . . . . 3-1
Installing Splashguards and
Lower Front Panels . . . . . . . . . . . . . . . . . 3-2
Sealing Splashguard to Floor . . . . . . . . . . 3-3
Installing Optional Stainless Steel
Splashguards . . . . . . . . . . . . . . . . . . . . . . 3-3
START UP / OPERATION
Start up . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Load Limits . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Stocking . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Installing FDA/NSF
Required Thermometer . . . . . . . . . . . . . . 4-1
MAINTENANCE
Care and Cleaning . . . . . . . . . . . . . . . . . . . 5-1
Cleaning Honeycomb Assemblies . . . . . . . 5-3
Cleaning Stainless Steel Top Rails . . . . . . 5-3
Removing Interior Back Panels . . . . . . . . . 5-3
Cleaning Coils . . . . . . . . . . . . . . . . . . . . . 5-4
Removing Scratches from Bumper . . . . . . 5-4
Maintaining Fluorescent Lamps . . . . . . . 5-4
SERVICE
Replacing Fan Motors and Blades . . . . . . 6-1
Replacing Fluorescent Lamps . . . . . . . . . . 6-2
Replacing Lamp-holders and End Caps . . 6-2
Replacing Electronic Ballasts . . . . . . . . . . . 6-3
Replacing Damaged Drain Fitting . . . . . . 6-3
Repairing Aluminum Coils . . . . . . . . . . . . 6-4
WARRANTY
TABLE OF CONTENTS
P/N 0518258_C iii
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
© 2022 Hussmann Corporation
®
®
Cleaning Under Merchandisers . . . . . . . . 5-4

P/N 0518258_D
iv RefRigeRation / electRical
U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • WWW.HUSSMANN.COM
REVISION HISTORY
REVISION D – January 2022 - Added Coil
Cleaning Note, Page 5-4.
REVISION C – October 2013 - Added warn-
ing box, page 1-1; Added Maintaining
Fluorescent Lamps, page 5-4; Revised
Replacing Fluorescent Lamps, page 6-2.
REVISION B – December 2012 - Added Coil
Cleaning, Page 5-4.
REVISION A – November 2010
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

P/N 0518258_D 1-1
Produce & Bakery
HUSSMANN CORPORATION, Bridgeton, MO 63044-2483 U.S.A.
Medium Temperature
P/N 0518258_C 1-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
NSF CERTIFICATION
These merchandisers are manufactured to meet
ANSI / National Sanitation Foundation
(NSF®) Standard #7 requirements. Proper
installation is required to maintain certification.
Near the serial plate, each case carries a label
identifying the type of application for which
the case was certified.
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
LOCATION
These merchandisers are designed for display-
ing 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.
The exterior frames on these cases provide
space 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.
Wide Island Fronts
BE SURE TO POSITION WIDE ISLAND MERCHANDISER
FRONTS PROPERLY. The front of wide island
merchandisers is readily identified by the location
of the serial plate (see leveling drawing on next
page). 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.
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 mate-
rials and submit a written request to the carrier
for inspection, within 15 days.
INSTALLATION
Do not walk or put heavy objects on case.
CAUTION

P/N 0518258_D
1-2 RefRigeRation / electRical
U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • WWW.HUSSMANN.COM
1-2 INSTALLATION
P/N 0518258_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
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.
MERCHANDISERS SHIPPED
WITH END INSTALLED
If the case was shipped with the end installed,
two long bolts were used to hold the shipping
brace to the end. If the shipping bolts are
reinserted after removing the brace, they will
extend into the product area. THEREFORE, BE
SURE TO REPLACE THESE BOLTS WITH THE SHORT-
ER BOLTS PROVIDED. NSF requires any bolt or
screw in the product area be capped or cut off if
it has more than three exposed threads.
NOTE:
Be careful not to damage the factory installed
end while moving the case. Make sure that tools
are positioned past the end and beneath the
merchandiser’s support bar.
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.
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 big enough so that you can level
adjoining merchandisers at the same time using
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 merchandiser. If a
gap exists between the support rail of the
merchandiser and the floor, a shim should be
placed in the center.
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 AIR-TIGHT TO PREVENT
FORMATION OF ICE OR CONDENSATION.
Do NOT remove shipping braces until
the merchandisers are positioned
for installation.
WARNING
Do not store items or flammable
materials atop the unit.
Do not walk on case.
CAUTION

P/N 0518258_D 1-3
Produce & Bakery
HUSSMANN CORPORATION, Bridgeton, MO 63044-2483 U.S.A.
Medium Temperature
P/N 0518258_C 1-3
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
Prep Case
1. Check to be sure that merchan-
disers are level and that the
factory-installed nut retainers
and alignment pins are in
place. Locate Joint Kit and
check contents against parts
list.
2. Remove shelves (if installed),
display racks, pans, front shelf
supports and front air grilles
from the right end.
3. Remove the rear panel(s) from
the right end. On multi-deck
cases remove the lower back
panel first. To remove a panel
lift it up from its bottom edge
and out. No tools are required.
Apply Gaskets
1. Apply 1/2in. (13 mm) gasket in
the horizontal recess across the
bottom and up the front of the
merchandiser as shown. Gasket
should cover slots.
2. Apply the 15/8in. (41 mm) gas-
ket to cover foam-to-metal gap
at rear of case and across the
top as shown. Be sure to over-
lap gaskets as shown. Check to
be sure that there are no gaps
between gasket and merchan-
diser.
Levels
Levels
Rear
Serial Plate
Front of
Merchandiser
Leveling Wide Island
Merchandisers
Leveling Single Deck
Merchandisers
NOTE: Do not place levels
on Display Pans or
on Shelves.

P/N 0518258_D
1-4 RefRigeRation / electRical
U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • WWW.HUSSMANN.COM
1-4 INSTALLATION
Fasten Cases
1. Move the second merchandiser into posi-
tion against the first. Match the alignment
pins with the corresponding holes.
2. Fasten fronts together using cap screws,
flat washers, lock washers and nuts.
Tighten only until front panels touch.
Do not tighten fully.
3. Use the cap screws, flat washers and lock
washers provided in the joint kit to draw
the merchandisers together at rear. Do not
tighten fully.
4. Draw canopies of multi-deck wall mer-
chandisers together by inserting threaded
rod through top shoe as shown. Fasten
each end with washers and nuts. Tighten
only until canopies touch.
5. Tighten joints in the order shown (A, B,
C, D) until gaskets are compressed, and
cases join smoothly.
P/N 0518258_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
1 5/8 in. Gasket (41 mm)
1/2 in. Gasket (13 mm)
PW & MWG
Models
B
C
A

P/N 0518258_D 1-5
Produce & Bakery
HUSSMANN CORPORATION, Bridgeton, MO 63044-2483 U.S.A.
1 5/8 in. Gasket
(41 mm)
1/2 in. Gasket
(13 mm)
Alignment
Pins
B
C
A
Glass
Front
Detail
Tighten in Order Shown
Medium Temperature
P/N 0518258_C 1-5
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
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.

P/N 0518258_D
1-6 RefRigeRation / electRical
U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • WWW.HUSSMANN.COM
1-6 INSTALLATION
Seal Merchandisers
1. Apply butyl tape across the bottom joint.
Be sure to extend the tape up the back and
front of the case.
2. Use field-supplied silicone to fill any gaps
between the front support brackets.
SPLASHGUARD BRACKET
AND JOINT SUPPORT
Install Splashguard Bracket
Position splashguard brackets to the merchan-
diser and level to the floor. Each bracket has a
11/2in. (38 mm) slot at the rear of the bracket
where it attaches to the merchandiser. Tighten
screws to secure the brackets.
Install Splashguard Joint Support
Position the joint support across the brackets
as shown above. Fasten with hex head sheet
metal screws.
OFFSETTING BUMPERS AND TOP RAIL
Offsetting the bumpers and top rails helps to
disguise the joint locations, giving the lineup a
smoother look.
1. Locate starter bumpers and top rail. They
are shipped with the left-end kit.
2. Remove factory installed top rails and
bumpers from cases as follows:
P/N 0518258_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
Butyl Tape
Silicone
Field Supplied
Front
Detail
Bracket Base of Case
Joint Support
Screw

P/N 0518258_D 1-7
Produce & Bakery
HUSSMANN CORPORATION, Bridgeton, MO 63044-2483 U.S.A.
Medium Temperature
P/N 0518258_C 1-7
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
a. To remove top rails, push rail toward
the back of the case with one hand
while lifting the top edge off the light
channel with the other hand. See
drawing below.
b. Starting at one end, carefully peel
bottom of top rail free of color panel
and set the rail inside the case.
c. Remove upper and lower bumpers by
pulling bumper away from bumper
retainers. Be careful not to lose the
internal joint trims on the upper
bumpers.
3. Starting at the left end of the line up,
install the upper 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 below.
b. Install full length bumpers
and internal trims offset
across joints. Make sure
that no gaps exist between
sections. Continue
installing the upper
bumpers the length of the
line up. Do NOT install
the last upper bumper sec-
tion at this time. This sec-
tion will be installed in the
last step.
4. Install lower bumper starter and full length
lower bumpers by simply pushing them into
place. There are no internal joint trims on
the lower bumpers.
5. Return to the left end of
the line up and position
the starter section of the
top rail as shown.
NOTE: The top rail should not be installed
until the upper bumper is securely in place.
Pull
Step 2-b.
Pull
Upper
Bumper
Internal
Joint Trim
Push Push
Lift
Step 2-a.
Step 2-c.
Starter
Bumper
Merchandiser
Joint
Retainer
Internal Joint Trims
Full Length
Bumper

P/N 0518258_D
1-8 RefRigeRation / electRical
U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • WWW.HUSSMANN.COM
1-8 INSTALLATION
6. Push the bottom portion of the short top
rail section down over the color panel. It
helps if you lift the top with your other
hand as shown. You will hear and feel the
trim “snap” into place.
NOTE: The trim
must “snap” to be
properly positioned.
7. Use one hand to push the top rail toward
the rear of the case while using the other
hand to “snap” the top section down over
the edge of the light channel as shown.
Again, be sure it
“snaps” into place.
8. Install full length top rails using the same
procedures. Continue installing the top rails
the length of the line up. Do NOT install
last section at this time.
9. Once all except the last sections of upper
bumper and top rail have been installed
refrigerate the case line up for at least six
(6) hours. The last sections of upper bumper
and top rail should be kept inside a refrigerated
case or cooler during this time. This will
allow the bumpers and top rails to
contract.
10. Go to the right end of the line up and tap
the top rail and bumpers to close any gaps.
11. Measure and cut
last sections of top
rail and bumpers.
Use a miter box
and fine-tooth saw
to cut last bumpers
and top rail to
length. Install the
last sections.
Note: If part of plastic top rail pops loose,
remove that section of top rail and re-install
according to Steps 6 and 7 above. Trying to
reinstall only the popped part may not secure
the top rail, and may damage the top rail,
color panel and light channel.
12. Remove protective film from bumper and
top rail once installation is complete.
GLASS FRONT CASE ONLY:Apply field-
supplied silicone sealant to underside of end
trim and press firmly in place.
INSTALLING PARTITIONS
To join same temperature fixtures on different
defrost cycles, an acrylic partition kit is
required.
To join unlike fixtures, or like fixtures operat-
ing at different temperatures, a 11/2in.
(38 mm) partition kit is required.
Instructions for installing these partitions are
included with the kits.
P/N 0518258_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
Push Lift
“Snap”
Push
Push
“Snap”
Bumper
Miter Box

P/N 0518258_D 2-1
Produce & Bakery
HUSSMANN CORPORATION, Bridgeton, MO 63044-2483 U.S.A.
Medium Temperature
P/N 0518258_C 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 case refrigeration piping is leak
tested, factory sealed and pressurized.
Before making refrigeration hookups,
depress the universal line valve to ensure
that coils have maintained pressure during
shipment.
REFRIGERANT PIPING
Connection Location
The refrigerant line connections are at the
right- hand end of the merchandiser (as viewed
from the front) beneath the display pans. A
sticker marks the location of the connection
“pod.” The installer must saw a hole through
the pod to exit the case.
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
Piping of merchandisers operating on the same
refrigeration system may be run from case to
case. DO NOT 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 to allow room
for lifting the hinged fan plenums and for
clearance beneath the display pans. Or the
interconnecting piping may be run outside the
case in the wireway 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. 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.
REFRIGERATION / ELECTRICAL
Refrigeration lines are under pressure
and should be depressurized before
attempting to make any connections.
WARNING
When brazing pipes, be sure to use the
insulation blanket shipped with the
merchandiser to prevent damage to the
plastic case bottom.
CAUTION
Pan
Piping
Locations
Fan Plenum
Pod

P/N 0518258_D
2-2 RefRigeRation / electRical
U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • WWW.HUSSMANN.COM
2-2 REFRIGERATION / ELECTRICAL
P/N 0518258_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
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
.
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.
• Case 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 case liquid lines should exit the
bottom of the branch liquid 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)
12 Ft Case
(3658 mm)
8 Ft Case
(2438 mm)
Liquid Line Take Off
Minimum Loop
3-in. (76 mm)

P/N 0518258_D 2-3
Produce & Bakery
HUSSMANN CORPORATION, Bridgeton, MO 63044-2483 U.S.A.
Medium Temperature
P/N 0518258_C 2-3
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
REFRIGERATION THERMOSTAT
The bulb for the optional refrigeration thermo-
stat is located approximately 12 in. (305 mm)
above the coil and 6 ft (1829 mm) from the
left-hand end (facing front) of the merchandis-
er. The optional refrigeration thermostat is
located 5 ft (1524 mm) from the left-hand end,
just past the wireway. On wide island models,
the thermostat body is located on the serial
plate side (front) of the merchandiser.
DEFROST TERMINATION THERMOSTAT
The standard disc type defrost termination
thermostat is not adjustable. This thermostat is
clamped to the suction line of the coil on
the left-hand (facing front) end of the case.
DEFROST SEQUENCES
These merchandisers require defrost cycles for
proper operation. Refer to the data sheets for
application data.
The Time Clock initiates defrost. The evaporator
fans continue to circulate air across the evapo-
rator coil, melting any frost build-up. Defrost
can be terminated by either temperature or time.
Temperature Termination
Temperature termination should be used for
the following types of installations:
1. Parallel systems with EPRs or suction stop
solenoids
2. Single compressor units without pump-
down cycle.
Time Termination
Should be used for the following types of
installations:
1. Parallel systems with thermostat and liquid
solenoid.
2. Single compressor units with pump-down.
To use time termination, simply do not wire
the termination thermostat.
Optional Refrigeration
Thermostat Bulb
Optional
Refrigeration
Thermostat
Standard Defrost
Termination Thermostat
5 Feet
6 Feet
12 Inches

P/N 0518258_D
2-4 RefRigeRation / electRical
U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • WWW.HUSSMANN.COM
2-4 REFRIGERATION / ELECTRICAL
P/N 0518258_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
MERCHANDISER ELECTRICAL DATA
Merchandiser data sheets are included with
this manual. The data sheets provide case elec-
trical data, electrical schematics, parts lists and
performance data. Refer to the merchandiser
data sheets and case serial plate for electrical
information.
ELECTRICAL CONNECTIONS
All wiring must be in compliance with NEC
and local codes. All electrical connections are
to be made in the electrical wireway or Handy
Box.
FIELD WIRING
Field wiring must be sized for component
amperes stamped on the serial plate. Actual
ampere draw may be less than specified. Field
wiring from the refrigeration control panel to
the merchandisers is required for defrost
termination thermostats and for optional
refrigeration thermostats. When multiple
merchandisers are on the same defrost circuit,
the defrost termination thermostats are wired in
series. ALWAYS CHECK THE SERIAL PLATE FOR
COMPONENT AMPERES.
IDENTIFICATION OF WIRING
Leads for all electrical circuits are identified by
colored plastic bands. These bands correspond
to the color code sticker (shown below) located
inside the merchandiser’s wireway.
Optional T8 rail lights and
optional Quick Connect spray hose
or field-installed misting system
shall not be used together.
CAUTION
WIRING COLOR CODE
Leads for all electrical circuits are identified by a colored plastic band: neutral
wire for each circuit has either White insulation or a White plastic sleeve in
addition to the color band.
PINK ............REFRIG. THERMOSTAT LOW TEMP.ORANGE OR
LIGHT BLUE..REFRIG. THERMOSTAT NORM TEMP.TAN ..........LIGHTS
DARK BLUE ..DEFROST TERM. THERMOSTAT MAROON...RECEPTACLES
PURPLE........CONDENSATE HEATERS YELLOW ....DEFROST HEATERS 120V
BROWN ........FAN MOTORS RED ........DEFROST HEATERS 208V
GREEN* .......GROUND *EITHER COLORED SLEEVE ORCOLORED INSULATION
ELECTRICIAN NOTE: Use copper conductor wire only.
MERCHANDISER MUST BE GROUNDED
THESE ARE MARKER COLORS WIRES MAY VARY.

P/N 0518258_D 3-1
Produce & Bakery
HUSSMANN CORPORATION, Bridgeton, MO 63044-2483 U.S.A.
Medium Temperature
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
P/N 0518258_C 3-1
WASTE OUTLET AND WATER SEAL
The waste outlet is located in front of the fan
plenum 6 ft (1829 mm) from the left-hand end
of the merchandiser (facing case front). A
water seal is supplied with each fixture. The
water seal must be installed to the waste outlet
to prevent air leakage and insect entrance into
the fixture.
NOTE:
Water seal outlet must clear front skid rail.
A Tee , adapter, plug and street ell are also
supplied with each merchandiser.
INSTALLING DRIP PIPING
Poorly or improperly installed drip pipes can
seriously interfere with the merchandiser’s
operation and result in costly maintenance and
product losses. Please follow the recommendations
listed below when installing drip pipes to
ensure proper installation.
1. Never use drip piping smaller than the
nominal diameter of the pipe or water seal
supplied with the merchandiser.
2. When connecting drip piping, the “water
seal” must be used as part of the drip
piping to prevent air leakage or insect
entrance. Never use two water seals in
series in any one drip pipe. DOUBLE WATER
SEALS IN SERIES WILL CAUSE AN AIR LOCK
AND PREVENT DRAINING.
3. Pitch the drip piping in the direction of
flow. There should be a minimum pitch of
1/4 in. per ft (20 mm per 1 m).
4. Avoid long runs of drip piping. Long runs
make it impossible to provide the pitch
necessary for good drainage.
5. Provide a suitable air break between
flood rim of the floor drain and
outlet of drip pipe. To meet code on
low base merchandisers, it may be
necessary to install a field-supplied
drip pipe reducer. An alternative is to
cut the last section of drip pipe at an
angle.
6. Prevent drip pipes from freezing:
A. Do NOT install drip pipes in contact
with uninsulated suction lines. Suction lines
should be insulated with a nonabsorbent
insulation material.
B. Where drip pipes are located in dead air
spaces, such as between merchandisers or
between a merchandiser and a store wall,
provide means to prevent freezing.
Splashguard brackets MUST be installed
before piping case.
DRIP PIPING AND SPLASHGUARDS
CAUTION

3-2 DRip piping anD SplaShguaRDS
P/N 0518258_D U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • WWW.HUSSMANN.COM
3-2 DRIP PIPING AND SPLASHGUARDS
P/N 0518258_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
Produce Wide Island Merchandisers
See the case data sheet set for dimensions.
Each waste outlet will be interconnected with
factory installed drip piping. When a 6 ft
(1829 mm) end merchandiser is ordered to be
joined to a center case at the factory, its waste
outlet can also be interconnected as shown. A
drain piping connect kit is required.
Each merchandiser is supplied with a 2 in.
(51 mm) water seal, an adapter, a plug and a
street ell. The street ell and water seal must be
installed to prevent air leakage and insect
entrance into the merchandiser. They should
be installed as shown below.
INSTALLING SPLASHGUARDS &
LOWER FRONT PANELS
The splashguard and lower front panel are
shipped inside each merchandiser. AFTER
merchandisers have been leveled and joined,
and all drip piping, electrical and refrigeration
work has been completed, install the splash-
guard and lower front panel.
NOTE: Merchandisers with low bases do not
have lower front panels and require only the
installation of splashguards.
NOTE:
Water seal outlet must clear front skid rail.
Base
Cleanout Adapter
and Plug Standard
Wireway
End Case 6, 8 or 12 Ft Case
(1829, 2438 or 3658 mm case)

P/N 0518258_D 3-3
Produce & Bakery
HUSSMANN CORPORATION, Bridgeton, MO 63044-2483 U.S.A.
Medium Temperature
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
P/N 0518258_C 3-3
To Install Splashguards:
1. Check to be sure that all splashguard
brackets are level with the floor.
2. Position top of splashguard over the top
edge of the bracket as shown below.
3. Push the lower edge of the splashguard
toward the bottom of the bracket until it
snaps into place.
To Install Lower Front Panel
1. Position the lower front panel with the top
angled as shown in the illustration below.
2. The tabs extending from the upper front
panel assembly are designed to fit into the
slots on the top of the lower front panel.
3. Once the top is positioned, lift the panel up
and drop it into the grove at the top of the
splashguard.
SEALING SPLASHGUARD TO FLOOR
IF REQUIRED by local sanitation codes, or if
desired by the customer, plastic splashguards
may be sealed to the floor using silicone type
sealer. The amount needed will depend on how
much the floor is out of level.
1. Remove all dirt, wax and grease from the
area of the splashguard where adhesion will
be necessary to ensure a secure installation.
2. Apply a good silicone type sealer along the
bottom of the splashguard. Sealant must
be removed and replaced when servicing.
INSTALLING OPTIONAL STAINLESS
STEEL SPLASHGUARDS
The OPTIONAL Stainless steel splashguard is
also shipped inside the merchandiser. AFTER all
the merchandisers have been leveled and
joined, and all drip piping, electrical and
refrigeration work has been completed, install
the OPTIONAL Stainless steel splashguard and,
if appropriate, the lower front panel.
1.
2.
3.
3.
1. &
2.
Bracket
Bracket
Splashguard
Splashguard
Splashguard
Silicone-type
Sealer
Ta b
Lower Front Panel
Lower Front Panel
Lower Front Panel
Base of
Case
Base of
Case

3-4 DRip piping anD SplaShguaRDS
P/N 0518258_D U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • WWW.HUSSMANN.COM
3-4 DRIP PIPING AND SPLASHGUARDS
P/N 0518258_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
To Install Splashguards:
1. Check to be sure that all splashguard
brackets are level with the floor.
2. Position top of splashguard over the top
edge of the bracket as shown below.
3. Push the lower edge of the splashguard
toward the bottom of the bracket until it
snaps into place.
To Install Lower Front Panel
1. Position the lower front panel with the top
angled as shown in the illustration below.
2. The tabs extending from the upper front
panel assembly are designed to fit into the
slots on the top of the lower front panel.
3. Once the top is positioned, lift the panel up
and drop it into the grove at the top of the
splashguard.
OPTIONAL Stainless steel splashguards may be
sealed to the floor using a vinyl cove base trim.
The size of trim needed will depend on how
much the floor is out of level.
To install the trim to the splashguard:
1. Remove all dirt, wax and grease from the
area of the splashguard where adhesion will
be necessary to ensure a secure installation.
2. Apply a good contact cement to the cove
trim and allow proper drying time accord-
ing to the directions supplied with the
cement.
3. Install the trim to the splashguard so that it
is lying flush with the floor. DO NOT SEAL
THE TRIM TO THE FLOOR.
4. If required by local health codes the Cove
Trim may be sealed to the floor, using a
silicone type sealer. Sealant must be
removed and replaced when servicing.
1.
2.
3.
3.
1. &
2.
Bracket
Bracket
Splashguard
Splashguard
Splashguard
Cement
Cove Trim
Ta b
Lower Front Panel
Lower Front Panel
Lower Front Panel
Base of
Case
Base of
Case