Hussmann RDI Operating instructions

/CHINO
RDI
REFRIGERATED DROP IN DISPLAY REV.0209
Installation
& Operation
Manual
RDI
REFRIGERATED DROP IN DISPLAY
P/N IGSS-RDI-0209
INSTALLATION & OPERATION GUIDE

IGSS-RDI-0209
2
/CHINO
A publication of
Hussmann®Chino
13770 RamonaAvenue • Chino,California 91710
[phone] FAX
[phone]
[phone]
Keep this booklet with the case at all times for future reference.
THIS BOOKLET CONTAINS INFORMATION ON:
RDI: Refrigerated “Drop-In” display designed for installa-
tion into the top of dry service counters.Featuring upper
and lower air discharges allowing display of unwrapped
food whether in platters, bowls or pans.
SHIPPING DAMAGE
All equipment should be thoroughly examined for ship-
ping damage before and during unloading.
This equipment has been carefully inspected at our fac-
tory and the carrier has assumed responsibility for safe
arrival.If damaged,either apparent or concealed,claim must
be made to the carrier.
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.The carrier will
supply necessary claim forms.
CONCEALED LOSS OR DAMAGE
When loss or damage is not apparent until after equipment
is uncrated, a claim for concealed damage is made. Make
request in writing to carrier for inspection within 15 days,
and retain all packaging.The carrier will supply inspection
report and required claim forms.
SHORTAGES
Check your shipment for any possible shortages of mate-
rial. If a shortage should exist and is found to be the re-
sponsibility of Hussmann Chino, notify Hussmann Chino. If
such a shortage involves the carrier,notify the carrier imme-
diately, and request an inspection. Hussmann Chino will
acknowledge shortages within ten days from receipt of
equipment.
HUSSMANN CHINO PRODUCT CONTROL
The serial number and shipping date of all equipment has
been recorded in Hussmann’s files for warranty and re-
placement part purposes. All correspondence pertaining
to warranty or parts ordering must include the serial num-
ber of each piece of equipment involved, in order to pro-
vide the customer with the correct parts.
The Hussmann warranty is printed on the back
of this guide.
General Instructions
Tabl e of Contents
General Instructions ................................................. 2
Cut & PlanViews ....................................................... 3
Opening Dimensions ................................................ 4
Installation ................................................................. 4
LEVELING.............................................................................................................. 4
Plumbing .................................................................... 5
WASTE OUTLET AND P-TRAP .............................................................................. 5
Refrigeration ............................................................. 6
T-STAT LOCATION.................................................................................................. 6
Electrical .................................................................... 7
WIRING COLOR CODE ......................................................................................... 7
User Information ...................................................... 7
STOCKING.............................................................................................................. 7
CASE CLEANING.................................................................................................... 8
Maintenance .............................................................. 8
ELECTRICAL PRECAUTIONS ................................................................................... 8
TIPS & TROUBLESHOOTING ................................................................................. 8
Specifications............................................................. 9
Wiring Diagram ........................................................ 10
Appendices ................................................................ 14
APPENDIX A. – Temperature Guidlines.............................................................. 14
APPENDIX B. – Application Recommendations.................................................. 14
APPENDIX C. – Field Recommendations............................................................ 14
APPENDIX D. – Recommendations to user ....................................................... 15
Warranty ................................................................... 18

Rev.0209
3
Cut & PlanViews
6
1
/
2
"
Bottom
Discharge
(for Pans)
Fan
Full Pan
12" X 20" X 6"
25
1
/ 8 " Flange ( 23
7
/ 8 " single well)
23
3
/ 4 " cut out ( 22
1
/ 2 " single well)
20 "
13
7
/
8
"
RDI-20
Self-Service – 2-10 wells
Scale = 1"
Top Discharge
(for Open Well)
6
1
/
2
"
Bottom
Discharge
(for Pans)
30 3/4 " cut out ( 29 1/2 " single well)
RDI-27
Self-Service – 2-10 Wells
Scale = 1"
Fan
13 7/8
"
32 1/8 " Flange ( 30 7/8 " single well)
Full Pan
12" X 20" X 6"
1/3rd
pan
27 "
Top D
ischarge
(for Open
Well)
20" PAN
+ 1/3 PAN
14"
16"
BENEATH
COUNTER
RDI 27
Refrigerated Drop-In
Self Service Case
Shown with Optional 2" Tilt
Scale = 1/2"
30 5/8" Cut Out
14"
30 5 / 8 " Cut Out
RDI 27
Refrigerated Drop-In
Self Service Case
Shown with Optional 4" Tilt
Scale = 1/2"
20" PAN
+ 1/3 PAN
18"
BENEATH
COUNTER
32 1 / 8 " Trim
RDI
BACK TO BACK 20"
Refrigerated Self Service Case
Scale = 3/8"
15
1
/
2
"
Below
Counter
50" Cut Out
51 1/2" Trim
12X20
PAN
50" Cut Out
RDI BACK TO BACK 20"
Refrigerated Self Service Case
Shown with Optional 2" Tilted Pan
Scale = 3/8"
51 1 / 2 " Trim
15
1
/
2
"
Below
Counter
12 X 20
PAN
2" Tilt
RDI BOWL OPTION
Self-Service
14"
Fan
6
1
/2"
28
1
/ 2 "
RDI-27
2-Well
Scale = 1/4"
Full Pan
(12" x 20")
Third Pan
(6" x 12")
RDI-27
4-Well
Scale = 1/4"
54
1
/ 8 "
41
5
/ 16 "
RDI-27
3-Well
Scale = 1/4"
Three sample modules are shown above. The RDI has been
engineered for lengths from 1-Well up to 11-Wells in one full pan or
one pan & 1/3rd design.

IGSS-RDI-0209
4
Installation
WELL DIMENSIONS
20"
Front to Back 1 well 2 or more wells
flange 23 7/8" 25 1/8"
cutout 22 1/2" 23 3/4"
Side to Side length 1 wells 2 wells 3 wells 4 wells 5 wells 6 wells 7 wells 8 wells 9 wells 10 wells
flange 17 1/8" 28 3/4" 41 1/2" 54 3/8" 67 1/8" 80" 92 3/4" 105 1/2" 118 3/8" 131 1/8"
cutout 15 3/4" 27 3/8" 40 1/8" 53" 65 3/4" 78 5/8" 91 3/8" 104 1/8" 117" 129 3/4"
27"
Front to Back 1 well 2 or more wells
flange 30 7/8" 32 1/8"
cutout 29 1/2" 30 3/4"
Side to Side length 1 wells 2 wells 3 wells 4 wells 5 wells 6 wells 7 wells 8 wells 9 wells 10 wells
flange 17 1/8" 28 3/4" 41 1/2" 54 3/8" 67 1/8" 80" 92 3/4" 105 1/2" 118 3/8" 131 1/8"
cutout 15 3/4" 27 3/8" 40 1/8" 53" 65 3/4" 78 5/8" 91 3/8" 104 1/8" 117" 129 3/4"
The RDI comes in various lengths and should be installed
in a proper and uniform manner. The following guidelines
will help ensure proper installation.
1. Case location should be near a floor sink or waste
outlet – with electrical and refrigeration access –
usually under the case.
2. All plumbing should conform to local codes.
3. When the RDI is to be installed in an existing fixture
or in a supplied fixture,the RDI and the new or
existing fixture should be leveled front to back and
side to side.
4. The electrical junction box is located under the RDI
which is where the electrical is terminated by the
manufacturer.The junction box is a standard 2x4
box with knock-outs and cover.
5. The refrigeration is also stubbed down under the
case for connection to liquid and suction lines from
the remote RDI case.
6. In cases where more that one RDI are installed, run
drains separately to the sink or drain outlet.
7. For RDI units installed in an existing table, the lip on
the unit should be sealed with a NSF approved
sealant and all phillips screws slots should be sealed
with same .
8. The RDI should be dropped in the existing table
oriented with the discharge air blowing from the
front to the back of the fixture,the front is identifi-
able by the adjustable top air discharge control pins.
9. A thermostat and solenoid mounted in the suction
line is recommended for temperature control and
defrost.
10. Set defrost per case specs section of this book.
LOCATION
The refrigerated merchandisers have been designed for
use only in air conditioned stores where temperature and
humidity are maintained at or below 75°F and 55% rela-
tive humidity.DO NOT allow air conditioning,electric fans,
ovens, open doors or windows (etc.) to create air cur-
rents around the merchandiser, as this will impair its cor-
rect operation.
Product temperature should always be maintained at a
constant and 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 life of the product.
UNCRATING THE STAND
Place the fixture as close to its permanent position as
possible. Remove the top of the crate. Detach the walls
from each other and remove from the skid. Unbolt the
case from the skid.The fixture can now be lifted off the
crate skid. Lift only at base of stand!
EXTERIOR LOADING
These models have not been structurally designed to sup-
port excessive external loading. Do not walk on their
tops; This could cause serious personal injury and dam-
age to the fixture.
LEVELING
IMPORTANT! IT IS IMPERATIVETHATTHE
RDI AND THE FIXTURE THAT THE RDI IS
INSTALLED IN,BE LEVELED FROM FRONT
TO BACK AND SIDE TO SIDE PRIOR TO
JOINING. A LEVEL CASE IS NECESSARY
TO INSURE PROPER OPERATION,WATER
Opening Dimensions

Rev.0209
5
DRAINAGE.
NOTE: A. To avoid removing concrete flooring, begin lineup
leveling from the highest point of the store floor.
B. When wedges are involved in a lineup, set them first.
All cases were leveled and joined prior to shipment to
insure the closest possible fit when cases are joined in the
field.When joining, use a carpenters level and shim legs
accordingly. Case must be raised correctly, under legs
where support is best, to prevent damage to case.
1. Check level of floor where cases are to be set.
Determine the highest point of the floor;cases will
be set off this point.
2. Level and set the first case,carefully guiding the
electrical,refrigeration and drain lines through the
parent case.Case must be raised under legs where
support is best to prevent damage to case.Internal
bracing may be removed at this time.
3. Apply liberal bead of case joint sealant (NSFAp-
proved) to cover dotted area shown below.
DO NOT USE PERMAGUM!
Proper case-joint sealing is
extremely important to prevent water leaks!
It is the contractor’s responsibility to install
case(s) according to local construction and
health codes.
Installation Continued
Plumbing
WASTE OUTLET AND P-TRAP
The waste outlet is located at the left hand end of these
fixtures allowing drip piping to be run under the fixture
lengthwise.
A 1" P-trap and threaded adapter are supplied with each
fixture.The P-trap must be installed to prevent air leakage
and insect entrance into the fixture.
INSTALLING CONDENSATE DRAIN
Poorly or improperly installed condensate drains can se-
riously interfere with the operation of this refrigerator,
and result in costly maintenance and product losses.Please
follow the recommendations listed below when installing
condensate drains to insure a proper installation:
1. Never use pipe for condensate drains smaller than
the nominal diameter of the pipe or P-trap supplied
with the case.
2. When connecting condensate drains,the P-trap
must be used as part of the condensate drain to
prevent air leakage or insect entrance.Store plumb-
ing system floor drains should be at least 14" off the
center of the case to allow use of the P-trap pipe
section.Never use two water seals in series in any
one line.Double P-traps in series will cause a lock
and prevent draining.
3. Always provide as much down hill slope (“fall”) as
possible;1/8" per foot is the preferred minimum.
PVC pipe,when used,must be supported to main-
tain the 1/8" pitch and to prevent warping.
4. Avoid long runs of condensate drains.Long runs
make it impossible to provide the“fall” necessary for
good drainage.
5. Provide a suitable air break between the flood rim of
the floor drain and outlet of condensate drain. 1" is
ideal.
6. Prevent condensate drains from freezing:
a. Do not install condensate drains in contact with
non-insulated suction lines. Suction lines should be
insulated with a nonabsorbent insulation material
such asArmstrong’sArmaflex.
b. Where condensate drains are located in dead air
spaces (between refrigerators or between a
refrigerator and a wall),provide means to prevent
freezing.The water seal should be insulated to
prevent condensation.

IGSS-RDI-0209
6
Refrigeration
REFRIGERANT TYPE
The standard refrigerant will be R-22 unless otherwise
specified on the customer order. Check the serial plate
on the case for information.
PIPING
The refrigerant line outlets are piped through the rear of
the fixture at the left hand end when viewed from the
back. Insulate suction lines to prevent condensation from
dripping.
REFRIGERATION LINES
LIQUID SUCTION
3/8" O.D. 5/8" O.D.
NOTE: The standard coil is piped at 5/8" (suction); however,
the store tie-in may vary depending on the number of
coils and the draw the case has. Depending on the case
setup, the connecting point in the store may be
5/8", 7/8", or 11/8". Refer to the particular case you are
hooking up.
Refrigerant lines should be sized as shown on the refrig-
eration legend furnished by the store.
Install P-traps (oil traps) at the base of all suction line ver-
tical risers.
Pressure drop can rob the system of capacity.To keep the
pressure drop to a minimum, keep refrigerant line run as
short as possible, using the minimum number of elbows.
Where elbows are required, use long radius elbows only.
CONTROL SETTINGS
See the “Case Specs” section of this guidebook for the
appropriate settings for your merchandiser.Maintain these
parameters to achieve near constant product tempera-
tures.Product temperature should be measured first thing
in the morning, after having been refrigerated overnight.
For all multiplexing, defrost should be time terminated.
Loadmaster valves are not recommended. Defrost times
should be as directed in the Case Specification section of
this guide.The number of defrosts per day should never
change.The duration of the defrost cycle may be adjusted
to meet conditions present at your location.
EVAPORATOR FANS
The evaporator fans are located at the center front of these
merchandisers directly beneath the display pans.
FOR ACCESS TO THE FANS: Remove the right hand deck
pan as viewed from the front of the case.
ACCESS TO TX VALVES & DRAIN LINES
MECHANICAL - Remove product from end of case. Remove
product racks.Remove refrigeration and drain access panels
(labeled).TX valve (mechanical only) and drain are located
under each access panel at end of the case.
ELECTRONIC -The Electronic Expansion valve master and
slave cylinder(s) are located within the electrical access
panel(s).
ELECTRONIC EXPANSION VALVE (OPTIONAL)
A wide variety of electronic expansion valves and case
controllers can be utilized. Please refer to EEV and con-
troller manufacturers information sheet. Sensors for elec-
tronic expansion valves will be installed on the coil inlet,
coil outlet, and in the discharge air. (Some supermarkets
require a 4th sensor in the return air). Case controllers
will be located in the electrical raceway or under the case
THERMOSTATIC EXPANSION VALVE LOCATION
This device is located on the same side as the refrigera-
tion stub. A Sporlan balanced port expansion valve model
is furnished as standard equipment,unless otherwise speci-
fied by customer.
EXPANSION VALVE ADJUSTMENT
Expansion valves must be adjusted to fully feed the evapo-
rator. Before attempting any adjustments, make sure the
evaporator is either clear or very lightly covered with frost,
and that the fixture is within 10°F of its expected operat-
ing temperature.
MEASURING THE OPERATING SUPERHEAT
1. Determine the suction pressure with an accurate
pressure gauge at the evaporator outlet.
2. From a refrigerant pressure temperature chart,
determine the saturation temperature at the
observed suction pressure.
3. Measure the temperature of the suction gas at the
thermostatic remote bulb location.
4. Subtract the saturation temperature obtained in step
No.2 from the temperature measured in step No.3.
3. The difference is superheat.
5. Set the superheat for 5°F - 7°F.
T-STAT LOCATION
T- Stats are located within the electrical raceway. Refer to
diagram below.

Rev.0209
7
User Information
Electrical
WIRING COLOR CODE
GREEN GROUND
PURPLE ANTI-SWEAT
ORANGE LIGHTS
YELLOW RECEPTACLE
RED / BLACK T-STAT /SOLENOID230V
BLACK / WHITE T-STAT / SOLENOID 115V
BROWN FAN MOTORS
CASE MUST BE GROUNDED
NOTE: Refer to label affixed to case to determine the actual
configuration as checked in the “TYPE INSTALLED” boxes.
ELECTRICAL CIRCUIT IDENTIFICATION
Standard lighting for all models will be full length fluores-
cent lamps located on the front of the parent case.
The switch controlling the lights is located on the parent
case.
FIELD WIRING & SERIAL PLATE AMPERAGE
Field Wiring must be sized for component amperes
printed 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 re-
frigeration thermostats.Most component amperes are
listed in the“Case Specs” section,but always check the
serial plate.
BEFORE SERVICING
ALWAYS DISCONNECT ELECTRICAL
POWER AT THE MAIN DISCONNECT
WHEN SERVICING OR REPLACING ANY
ELECTRICAL COMPONENT.
This includes (but not limited to) Fans, Heat-
ers, Thermostats, and Lights.
STOCKING
Improper temperature and lighting will cause serious prod-
uct loss. Discoloration, dehydration and spoilage can be
controlled with proper use of the equipment and handling
of product. Product temperature should always be main-
tained at a constant and proper temperature.This means
that from the time the product is received, through stor-
age, preparation and display,the temperature of the prod-
uct must be controlled to maximize life of the product.
Hussmann cases were not designed to“heat up” or“cool
down” product—but rather to maintain an item’s proper
temperature for maximum shelf life.To achieve the pro-
tection required always:
1. Minimize processing time to avoid damaging tem-
perature rise to the product.Product should be at
proper temperature.
2. Keep the air in and around the case area free of
foreign gasses and fumes or food will rapidly dete-
riorate.
3. Maintain the display merchandisers temperature
controls as outlined in the refrigerator section of
this manual.
4. Do not place any product into these refrigerators
until all controls have been adjusted and they are
operating at the proper temperature.Allow mer-
chandiser to operate a minimum of 6 hours before
stocking with any product.
5. When stocking,never allow the product to extend
beyond the recommended load limit. Air dis-
charge and return air flue must be unob-
structed at all times to provide proper refrig-
eration. Do not stock product within the top air
discharge zone (See diagram).
Top Discharge
(for Open Well)
6. This case was designed and tested using stainless
steel hotel pans.The use of any other material (such
as crocks) may insulate the product and thus,not be
kept cold.Containers made of materials other than
stainless steel is discouraged and may void warranty.
7. Avoid the use of supplemental flood or spot lighting.
Display light intensity has been designed for maxi-
mum visibility and product life at the factory.The use
of higher output fluorescent lamps (H.O.andV.H.O.),
will shorten the shelf life of the product.
IMPORTANT STEPS
1. Do not set temperature too cold,as this causes
product dehydration.Refer to case specs section
for proper settings.
2. Temperature control should be by means of aT-Stat
and Suction Stop Solenoid at each case.Do not use
EPR valves,Liquid Line Solenoids or electronic
control devices of any kind,as these allow tempera-

IGSS-RDI-0209
8
ture swings causing dehydration and excessive
energy consumption.
CASE CLEANING
Long life and satisfactory performance of any equipment
are dependent upon the care given to it.To insure long life,
proper sanitation and minimum maintenance costs, the
refrigerator should be thoroughly cleaned frequently.SHUT
OFF FAN DURING CLEANING PROCESS. It can be un-
plugged within the case,or shut off case at the source.The
interior bottom may be cleaned with any domestic soap
or detergent based cleaners. Sanitizing solutions will not
harm the interior bottom,however,these solutions should
always be used according to the manufacturer’s directions.
It is essential to establish and regulate cleaning procedures.
This will minimize bacteria causing discoloration which
leads to degraded product appearance and signifigantly
shortening product shelf life.
Soap and hot water are not enough to kill this bacteria. A
sanitizing solution must be included with each cleaning pro-
cess to eliminate this bacteria.
1. Scrub thoroughly,cleaning all surfaces,with soap and
hot water.
2. Rinse with hot water,but do not flood.
3. Apply the sanitizing solution according to the
manufacturer’s directions.
4. Rinse thoroughly.
5. Dry completely before resuming operation.
CLEANING GLASS & MIRRORS
Only use a soft cloth and mild glass cleaner for cleaning
any glass or mirrored components. Be sure to rinse and/
or dry completely.
Never use hot water on cold glass surfaces! It
may shatter and cause serious injury! Allow glass
surfaces to warm first.
CLEANING PRECAUTIONS
WHEN CLEANING:
• DO NOT USE HIGH PRESSURE WATER HOSES
• DO NOT INTRODUCE WATER FASTER THAN WASTE OUTLET CAN DRAIN
• NEVER ON A SELF CONTAINED UNIT WITH AN EVAPORATOR FAN
• NEVER USE A CLEANING OR SANITIZING SOLUTION THAT HAS AN OIL
BASE (these will dissolve the butyl sealants) or an AMMONIA BASE
(this will corrode the copper componets of the case)
TO PRESERVE THE ATTRACTIVE FINISH:
• DO USE WATER AND A MILD DETERGENT FOR THE EXTERIOR ONLY
• DO NOT USE ABRASIVES OR STEEL WOOL SCOURING PADS
(these will mar the finish)
Maintenance
ELECTRICAL PRECAUTIONS
BEFORE SERVICING – Always disconnect
electrical power at the main disconnect when
servicing or replacing any electrical component
This includes (but not limited to) Fans, Heaters,
Thermostats, and Lights.
EVAPORATOR FANS
The evaporator fans are located at the center front of
these merchandisers directly beneath the display pans.
Should fans or blades need servicing, always replace fan blades
with the raised embossed side of the blade TOWARD THE
MOTOR.
COPPER COILS
The copper coils used in Hussmann merchandisers may
be repaired in the field. Materials are available from local
refrigeration wholesalers.
Hussmann recommends using #15 Sil-Fos for repairs.
TIPS & TROUBLESHOOTING
Before calling for service, check the following:
1. Check electrical power supply to the equipment for
connection.
2. Check fixture loading.Overstocking case will affect
its proper operation.
3. If frost is collecting on fixture and/or product,check
that Humidity Control is working properly,and that
no outside doors or windows are open—allowing
moisture to enter store.
FOR PROMPT SERVICE
When contacting the factory,
be sure to have the Case Model and Serial
Number handy. This information is on a plate
located on the case itself.

Rev.0209
9
Specifications
TEMPERATURE DISCHG. FAN SIZE DEFROST 115 V. ELECTRICAL CIRCUITS SELF CONTAINED UNIT DATA / SEE CROSS REF.
MODEL NUMBER BTU AVG AIR T-STAT/ TYPE & FREQ. CIRCUIT 1 SELF CONTAINED
REQ’D EVAP PROD DISC VELOC CUT IN OF NUMBER & E E FANS STD. LOW PRESSURE
CASE LENGTH PER FT. TMP TMP TMP @FPM SETTINGS COIL OF MOTORS DURATION (OPTIONAL) FANS CONTROL & SETTINGS H.P. VOLTS AMPACITY
RDI Standard 20" - 27" Deep Pans
1 Well 500 20°38°30°125 30°Forced 41/2" Axial 36 min. N/A .18 50# In 1/4 115 7.9
per Well Air (1) (4) 30# Out
2 Well 500 20°38°30°125 30°Forced 41/2" Axial 36 min. N/A .18 50# In 1/4 115 9.2
per Well Air (1) (4) 30# Out
3 Well 500 20°38°30°125 30°Forced 41/2" Axial 36 min. N/A .18 50# In 1/4 115 9.2
per Well Air (1) (4) 30# Out
4 Well 500 20°38°30°125 30°Forced 41/2" Axial 36 min. N/A .18 50# In 1/4 115 9.2
per Well Air (1) (4) 30# Out
5 Well 500 20°38°30°125 30°Forced 41/2" Axial 36 min. N/A .18 50# In 1/3 115 11.9
per Well Air (1) (4) 30# Out
6 Well 500 20°38°30°125 30°Forced 41/2" Axial 36 min. N/A .36 50# In 1/3 115 11.9
per Well Air (2) (4) 30# Out
7 Well 500 20°38°30°125 30°Forced 41/2" Axial 36 min. N/A .36 50# In 1/2 115 11.9
per Well Air (2) (4) 30# Out
8 Well 500 20°38°30°125 30°Forced 41/2" Axial 36 min. N/A .36 50# In 1/2 115 11.9
per Well Air (2) (4) 30# Out
9 Well 500 20°38°30°125 30°Forced 41/2" Axial 36 min. N/A .54 50# In 3/4 208-230 8.7
per Well Air (3) (4) 30# Out
10 Well 500 20°38°30°125 30°Forced 41/2" Axial 36 min. N/A .54 50# In 3/4 208-230 8.7
per Well Air (3) (4) 30# Out
11 Well 500 20°38°30°125 30°Forced 41/2" Axial 36 min. N/A .54 50# In 3/4 208-230 8.7
per Well Air (3) (4) 30# Out
RDI Standard Back to Back 20" - 27" Deep Pans
2 Well 500 20°38°30°125 30°Forced 41/2" Axial 36 min. N/A .36 50# In 1/4 115 9.0
per Well Air (2) (4) 30# Out
4 Well 500 20°38°30°125 30°Forced 41/2" Axial 36 min. N/A .36 50# In 1/4 115 9.0
per Well Air (2) (4) 30# Out
6 Well 500 20°38°30°125 30°Forced 41/2" Axial 36 min. N/A .36 50# In 1/3 115 10.9
per Well Air (2) (4) 30# Out
8 Well 500 20°38°30°125 30°Forced 41/2" Axial 36 min. N/A .36 50# In 1/2 115 19.9
per Well Air (2) (4) 30# Out
10 Well 500 20°38°30°125 30°Forced 41/2" Axial 36 min. N/A .36 50# In 3/4 208-230 8.7
per Well Air (2) (4) 30# Out
12 Well 500 20°38°30°125 30°Forced 41/2" Axial 36 min. N/A .72 50# In 1 208-230 13.0
per Well Air (4) (4) 30# Out
14 Well 500 20°38°30°125 30°Forced 41/2" Axial 36 min. N/A .72 50# In 1 208-230 13.0
per Well Air (4) (4) 30# Out
16 Well 500 20°38°30°125 30°Forced 41/2" Axial 36 min. N/A .72 50# In 1 208-230 13.0
per Well Air (4) (4) 30# Out
18 Well 500 20°38°30°125 30°Forced 41/2" Axial 36 min. N/A 1.08 50# In 1 1/2 208-230 19.0
per Well Air (6) (4) 30# Out
20 Well 500 20°38°30°125 30°Forced 41/2" Axial 36 min. N/A 1.08 50# In 1 1/2 208-230 19.0
per Well Air (6) (4) 30# Out
22 Well 500 20°38°30°125 30°Forced 41/2" Axial 36 min. N/A 1.08 50# In 1 1/2 208-230 19.0
per Well Air (6) (4) 30# Out
HUSSMANN CHINO CASE SPECIFICATIONS 1/02
INQUIRIES? Technical [phone] X2133 Service [phone] Parts and Warranty Information [phone] X2131

IGSS-RDI-0209
10
Wiring Diagram
RDI1/2-27sc wiring
1 or 2 Pan Self-Contained Cold Food/Deli Display
Sheet 1 of 1
final
BK
Boris Kasrel
Date:
Project Title: Drawing No.:
Drawn By:
Next Assembly: Drawing Title:
Date:
Hussmann Corporation
13770 Ramona Avenue
Chino, CA. 91710
(909)-590-4910
Lic.#: 644406
W2100001.dft
Revisions:
No. Description: Checked By:
By:
00.28.2000
MOTOR
Brown
~115V - .52A
Evaporator fan
Yellow
~115V - .25A
black
white
6
2
1
5
4
R
C
S
MOTOR
2
13
N
4
X
T
Condensor Fan
Compressor Motor
Start Capacitor
Paragon Timer
8045-00
Pressure
Safety Thermostat "A"
Current Relay
Motor Switch
#125-01-0271
~115V - 10.2A
1/4 H.P - 115V / 9.2A
(2) F14T5/TL830
Ballast
WH2-120-135
LIGHTS
ToggleSwith
#125-01-0307
Note: lamp length may very.
case must be grounded.

Rev.0209
11
RDI3/4-27sc wiring
3 or 4 Pan Self-Contained Cold Food/Deli Display
Sheet 1 of 1
final
BK
Boris Kasrel
Date:
Project Title: Drawing No.:
Drawn By:
Next Assembly: Drawing Title:
Date:
Hussmann Corporation
13770 Ramona Avenue
Chino, CA. 91710
(909)-590-4910
Lic.#: 644406
W2100002.dft
Revisions:
No. Description: Checked By:
By:
00.28.2000
MOTOR MOTOR
Brown
~115V - .52A
Evaporator fans
Yellow
~115V - .25A
black
white
6
2
1
5
4
R
C
S
MOTOR
2
13
N
4
X
T
Condensing Fan
Compressor Motor
Start Capacitor
Paragon Timer
8045-00
Pressure
Safety Thermostat "A"
Current Relay
Motor Switch
#125-01-0271
~115V - 10.2A
1/4 H.P - 115V / 9.2A
(2) F14T5/TL830
Ballast
WH2-120-135
LIGHTS
Toggle Swith
#125-01-0307
Note: lamp length and ballast may very;
case must be grounded.

IGSS-RDI-0209
12
RDI5-27sc wiring
5 Pan Self-Service Cold Food/Deli Display
Sheet 1 of 1
final
BK
Boris Kasrel
Date:
Project Title: Drawing No.:
Drawn By:
Next Assembly: Drawing Title:
Date:
Hussmann Corporation
13770 Ramona Avenue
Chino, CA. 91710
(909)-590-4910
Lic.#: 644406
W2100003
Revisions:
No. Description: Checked By:
By:
02.04.2000
MOTOR MOTOR
Brown
~115V - .78A
Evaporator fans
Yellow
~115V - .25A
black
white
6
2
1
5
4
R
C
S
MOTOR
2
13
N
4
X
T
Condensor Fan
Compressor Motor
Start Capacitor
Paragon Timer
8045-00
Pressure
Safety Thermostat "A"
Current Relay
Motor Switch
#125-01-0271
~115V - 10.2A
1/4 H.P - 115V / 9.2A
(2) F14T5/TL830
Ballast
WH2-120-135
LIGHTS
ToggleSwith
#125-01-0307
MOTOR
Note: lamp length and ballast may very;
case must be grounded.

Rev.0209
13
Sheet 1 of 1
final
BK
Boris Kasrel
Date:
Project Title: Drawing No.:
Drawn By:
Next Assembly: Drawing Title:
Date:
Hussmann Corporation
13770 Ramona Avenue
Chino, CA. 91710
(909)-590-4910
Lic.#: 644406
Revisions:
No. Description: Checked By:
By:
Brown
~115V - 1.3A
Evaporator fans
Yellow
~115V - 1.1A
black
white
6
2
1
5
4
R
C
S
MOTOR
2
13
N
4
X
T
Condensor Fan
Compressor Motor
Start Capacitor
Paragon Timer
8045-00
Pressure
Safety T-Stat "A"
Current Relay
Motor Switch
#125-01-0271
~115V - 10.2A
1/3 H.P. - 115V / 11.9A
(2) F28T5/L830
Ballast
WH3-120-L-64W
LIGHTS
ToggleSwith
#125-01-0307
Note:casemust begrounded.
MMMM
M
Ledge Lights
(2) F28T5/L830
Ballast
WH3-120-L-64W
Sneezguard Lights
CondensingUnit for Self-ContainedCounters only
RDI7-27 Self-Contained or Remote wiring
Custom 7 Pan Service Cold Food/Deli Display
with rear storage W2100004
05.10.2000

IGSS-RDI-0209
14
APPENDIX A. – Temperature Guidlines
The refrigerators should be operated according to the manufacturer’s
published engineering specifications for entering air temperatures for
specific equipment applications. Table 1 shows the typical temperature
of the air entering the food zone one hour before the start of defrost
and one hour after defrost for various categories of refrigerators.
Refer to Appendix C for Field Evaluation Guidelines.
TABLE 1
Type of Refrigerator Typical Entering
AirTemperature
I. OPEN DISPLAY
A. Non frozen:
1) Meat 28°F
2) Dairy/Deli 32°F
3) Produce
a. Processed 36°F
b. Unprocessed 45°F
B. Frozen 0°F
C. Ice Cream -5°F
II. CLOSED DISPLAY
A. Non frozen:
1) Meat 34°F
2) Dairy/Deli 34°F
3) Produce
a. Processed 36°F
b. Unprocessed 45°F
B. Frozen 0°F
C. Ice Cream -5°F
Single Deck Multi Deck ServiceCase Reach-In
I. Open Display Styles II. Closed Display Styles
APPENDIX B. – Application Recommendations
1.0 Temperature performance is critical for controlling bacteria
growth. Therefore, the following recommendations are included in
the standard. They are based on confirmed field experience over
many years.
1.1 The installer is responsible for following the installation instruc-
tions and recommendations provided by the manufacturer for the
installation of each individual type refrigerator.
1.2 Refrigeration piping should be sized according to the equipment
manufacturer’s recommendations and installed in accordance with
normal refrigeration practices. Refrigeration piping should be
insulated according to the manufacturer’s recommendations.
1.3 A clogged waste outlet blocks refrigeration. The installer is
responsible for the proper installation of the system which
dispenses condensate waste through an air gap into the building
indirect waste system.
1.4 The installer should perform a complete start-up evaluation prior to
the loading of food into the refrigerator, which includes such items as:
a) Initial temperature performance, Coils should be properly fed with
a refrigerant according to manufacturer’s recommendations.
b) Observation of outside influences such as drafts, radiant
heating from the ceiling and from lamps. Such influence should
be properly corrected or compensated for.
c) At the same time, checks should be made of the store dry-
bulb and wet-bulb temperatures to ascertain that they are
within the limits prescribed by the manufacturer.
d) Complete start-up procedures should include checking through
a defrost to make certain of its adequate frequency and length
without substantially exceeding the actual needs. This should
include checking the electrical or refrigerant circuits to make
sure that defrosts are correctly programmed for all the
refrigerators connected to each refrigeration system.
e) Recording instruments should be used to check performance.
APPENDIX C. – Field Recommendations
Recommendations for field evaluating the performance of retail
food refrigerators
1.0 The most consistent indicator of display refrigerator performance
is temperature of the air entering the product zone (see
Appendix A). In practical use, the precise determination of return
air temperature is extremely difficult. Readings of return air
temperatures will be variable and results will be inconsistent. The
product temperature alone is not an indicator of refrigerator
performance.
NOTE: Public Health will use the temperature of the product in
determining if the refrigerator will be allowed to display potentially
hazardous food. For the purpose of this evaluation, product
temperature above the FDA Food Code 1993 temperature for
potentially hazardous food will be the first indication that an
evaluation should be performed. It is expected that all refrigerators
will keep food at the FDA Food Code 1993 temperature for potentially
hazardous food.
1.1 The following recommendations are made for the purpose of
arriving at easily taken and understood data which, coupled with
other observations, may be used to determined whether a display
refrigerator is working as intended:
a) INSTRUMENT – A stainless steel stem-type thermometer is
recommended and it should have a dial a minimum of 1 inch
internal diameter. A test thermometer scaled only in Celsius or
dually scaled in Celsius and Fahrenheit shall be accurate to
Appendices

Rev.0209
15
1°C (1.8°F). Temperature measuring devices that are scaled
only in Fahrenheit shall be accurate to 2°F. The thermometer
should be checked for proper calibration. (It should read 32°F
when the stem is immersed in an ice water bath).
b) LOCATION – The probe or sensing element of the thermometer
should be located in the airstream where the air first enters
the display or storage area, and not more than 1 inch away
from the surface and in the center of the discharge opening.
c) READING – It should first be determined that the refrigerator
is refrigerating and has operated at least one hour since the
end of the last defrost period. The thermometer reading should
be made only after it has been allowed to stabilize, i.e.,
maintain a constant reading.
d) OTHER OBSERVATIONS – Other observations should be made
which may indicate operating problems, such as unsatisfactory
product, feel/appearance.
e) CONCLUSIONS – In the absence of any apparent undesirable
conditions, the refrigerator should be judged to be operating
properly. If it is determined that such condition is undesirable,
i.e., the product is above proper temperature, checks should be
made for the following:
1. Has the refrigerator been loaded with warm product?
2. Is the product loaded beyond the “Safe Load Line” markers?
3. Are the return air ducts blocked?
4. Are the entering air ducts blocked?
5. Is a dumped display causing turbulent air flow and mixing with room air?
6. Are spotlights or other high intensity lighting directed onto the
product?
7. Are there unusual draft conditions (from heating /air-conditioning
ducts, open doors, etc.)?
8. Is there exposure to direct sunlight?
8. Are display signs blocking or diverting airflow?
9. Are the coils of the refrigerator iced up?
11. Is the store ambient over 75°F, 55% RH as set forth in ASHRAE
Standard 72 and ASHRAE Standard 117?
12. Are the shelf positions, number, and size other than recom-
mended by the manufacturer?
13. Is there an improper application or control system?
14. Is the evaporator fan motor/blade inoperative?
15. Is the defrost time excessive?
16. Is the defrost termination, thermostat (if used) set too high?
17. Are the refrigerant controls incorrectly adjusted?
18. Is the air entering the condenser above design conditions? Are
the condenser fins clear of dirt, dust, etc.?
19. Is there a shortage of refrigerant?
20. Has the equipment been modified to use replacements for CFC-12,
CFC-502 or other refrigerant? If so, have the modifications been
made in accordance with the recommendations of the equipment
manufacturer? Is the refrigerator charged with the proper
refrigerant and lubricant? Does the system use the recommended
compressor?
APPENDIX D. – Recommendations to user
1.0 Hussmann Corporation provides instructions and recommendations
for proper periodic cleaning. The user will be responsible for such
cleaning, including the cleaning of low temperature equipment within
the compartment and the cooling coil area(s). Cleaning practices,
particularly with respect to proper refrigerator unloading and warm-
up, must be in accordance with applicable recommendations.
1.1 Cleaning of non frozen food equipment should include a weekly cleaning
of the food compartment as a minimum to prevent bacteria growth from
accumulating. Actual use and products may dictate more frequent cleaning.
Circumstances of use and equipment design must also dictate the frequency
of cleaning the display areas. Weekly washing down of the storage
compartment is also recommended, especially for equipment subject to
drippage of milk or other liquids, or the collection of vegetable, meat,
crumbs, etc. or other debris or litter. Daily cleaning of the external areas
surrounding the storage or display compartments with detergent and water
will keep the equipment presentable and prevent grime buildup.
1.2 Load levels as defined by the manufacturer must be observed.
1.3 The best preservation is achieved by following these rules:
a) Buy quality products.
b) Receive perishables from transit equipment at the ideal temperature
for the particular product.
c) Expedite perishables to the store’s storage equipment to avoid
unnecessary warm-up and prolonged temperature recovery. Food
store refrigerators are not food chillers nor can they reclaim quality
lost through previous mishandling.
d) Care must be taken when cross merchandising products to ensure
that potentially hazardous vegetable products are not placed in non
refrigerated areas.
e) Display and storage equipment doors should be kept closed during
periods of inactivity.
f) Minimize the transfer time of perishables from storage to display.
g) Keep meat under refrigeration in meat cutting and processing area
except for the few moments it is being handled in processing. When
a cut or tray of meat is not to be worked on immediately, the
procedure should call for returning it to refrigeration.
h) Keep tools clean and sanitized. Since mechanical equipment is used
for fresh meat processing, all such equipment should be cleaned at
least daily and each time a different kind of meat product comes
in contact with the tool or equipment.
i) Make sure that all refrigeration equipment is installed and adjusted
in strict accordance with the manufacturer’s recommendations.
j) See that all storage and refrigeration equipment is kept in proper
working order by routine maintenance.

IGSS-RDI-0209
16

Rev.0209
17
Limited Warranty
This warranty is made to the original user at the original installation site and is not transferable.
Hussmann merchandisers are warranted to be free from defect in material and workmanship under normal use and
service for a period of one (1) year from the date of original installation (not to exceed fifteen (15) months from the date of
shipment for the factory). Hussmann Impact Modular Coils are warranted for a total of five (5) years based upon
the above criteria. Hussmann’s obligation under this warranty shall be limited to repairing or exchanging any part or parts,
without charge F.O.B. factory or nearest authorized parts depot within said period and which is proven to the satisfaction of
the original manufacturing plant warranty group to be thus defective.
Hussmann covers the entire case or refrigeration product and all its components (except for lamps,driers,fuses,and
other maintenance type replacement parts) for the one (1) year warranty period.
Additionally, Hussmann warrants for a total period of three (3) years all sealed, multi-glass assemblies except those
used in sliding doors on closed meat display cases. If within three (3) years from the date of installation (not to exceed thirty-
nine (39) months from the date of shipment from factory), it shall be proven to the satisfaction of the originating factory
warranty group that there is impaired visibility through the multi-glass assemblies thereof caused by moisture between the
glasses, the multi-glass assembly will be replaced free of charge, F.O.B. factory. This additional warranty excludes accident,
misuse, or glass breakage.
On Hussmann manufactured self-contained display cases, Hussmann agrees to repair or exchange, at its option, the
original motor/compressor unit only with a motor/compressor of like or of similar design and capacity if it is shown to the
satisfaction of Hussmann that the motor/compressor is inoperative due to defects in factory workmanship or material under
normal use and service as outlined in Hussmann’s “Installation Instructions” which are shipped inside new Hussmann equip-
ment. Hussmann’s sole obligation under this warranty shall be limited to a period not to exceed five years from date of
factory shipment.
On Hussmann refrigeration systems, an additional (4) year extended warranty for the motor/compressor assembly
is available, but must be purchased prior to shipment to be in effect. Hussmann reserves the right to inspect the job site,
installation and reason for failure.
The motor/compressor warranties listed above do not include replacement or repair of controls, relays, capacitors,
overload protectors,valve plates,oil pumps,gaskets or any external part on the motor/compressor replaceable in the field,or
any other part of the refrigeration system or self-contained display case.
THE WARRANTIES TO REPAIR OR REPLACE ABOVE RECITED ARE THE ONLY WARRANTIES, EXPRESS, IM-
PLIED OR STATUTORY, MADE BY HUSSMANN WITH RESPECT TO THE ABOVE MENTIONED EQUIPMENT, INCLUD-
ING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS, AND HUSSMANN NEITHER ASSUMES NOR
AUTHORIZES ANY PERSONTO ASSUME FOR IT,ANY OTHER OBLIGATION OR LIABILITY IN CONNECTIONWITH
THE SALE OF SAID EQUIPMENT OR ANY PART THEREOF.
THISWARRANTY SHALL NOTAPPLYTO LOSS OF FOOD OR CONTENTS OFTHE EQUIPMENT DUE
TO FAILURE FOR ANY REASON. HUSSMANN SHALL NOT BE LIABLE:
•For payment of labor for any removal or installation of warranted parts;
•For any repair or replacements made without the written consent of Hussmann,or when the equipment is installed or
operated in a manner contrary to the printed instructions covering installation and service which accompanied such
equipment;
•For any damages,delays,or losses,direct or consequential which may arise in connection with such equipment or part
thereof;
•For damages caused by fire,flood,strikes,acts of God or circumstances beyond its control;
•When the equipment is subject to negligence,abuse,misuse or when the serial number of the equipment has been
removed,defaced,or altered;
•When the equipment is operated on low or improper voltages
•When the equipment is put to a use other than normally recommended by Hussmann (i.e.deli case used for fresh
meat);
•When operation of this equipment is impaired due to improper drain installation;
•For payment of refrigerant loss for any reason;
•For costs related to shipping or handling of replacement parts.
Hussmann Corporation, Corporate Headquarters: Bridgeton, Missouri, U.S.A. 63044 August 1, 1998

IGSS-RDI-0209
18
The MODEL NAME and SERIAL NUMBER is required in order to provide you
with the correct parts and information for your particular unit.
They can be found on a small metal plate on the unit.
Please note them below for future reference.
MODEL:
SERIAL NUMBER:
/Chino
Additional copies of thispublication may be obtained by contacting:
Hussmann®Chino
13770 Ramona Avenue • Chino,California 91710
[phone] FAX
[phone]
[phone]
Service Record
Last service date: By: