Manual
Installation
& Operation
REV.0209
/CHINO
RDI
REFRIGERATED DROP IN DISPLAY
RDI
REFRIGERATED DROP IN DISPLAY
P/N IGSS-RDI-0209
INSTALLATION & OPERATION GUIDE
Ta b l e of Contents
IGSS-RDI-0209
General Instructions
THIS BOOKLET CONTAINS INFORMATION ON:
General Instructions ................................................. 2
Cut & Plan Views....................................................... 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
RDI: Refrigerated “Drop-In” display designed for installation 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 shipping damage before and during unloading.
This equipment has been carefully inspected at our factory 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 material. If a shortage should exist and is found to be the responsibility 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 replacement part purposes. All correspondence pertaining
to warranty or parts ordering must include the serial number of each piece of equipment involved, in order to provide the customer with the correct parts.
Keep this booklet with the case at all times for future reference.
A publication of
Hussmann® Chino
13770 Ramona Avenue • Chino, California 91710
(909) 628-8942 FAX
(909) 590-4910
(800) 395-9229
/CHINO
The Hussmann warranty is printed on the back
of this guide.
2
Rev.0209
Cut & Plan Views
7
"
8
/
13
25 1/8" Flange (
1
23 3/4" cut out (
20
"
2
/
12" X 20" X 6"
6
n
a
F
23 7/8" single well)
"
Full Pan
22 1/2" single well)
RDI-20
Self-Service – 2-10 wells
Scale = 1"
20" PAN
+ 1/3 PAN
14"
30 5/8" Cut Out
RDI 27
Refrigerated Drop-In
Self Service Case
Shown with Optional 2" Tilt
Scale = 1/2"
Top Discharge
(for Open Well)
Bottom
Discharge
(for Pans)
16"
BENEATH
COUNTER
7
"
/8
13
32 1/8
1/3rd
pan
30 3/4
" Flange (
" cut out (
"
2
/
1
6
30 7/8
27
"
12" X 20" X 6"
Fan
29 1/2
RDI-27
Self-Service – 2-10 Wells
14"
Scale = 1"
1
32
/8" Trim
5
30
/8" Cut Out
RDI 27
Refrigerated Drop-In
Self Service Case
Shown with Optional 4" Tilt
Scale = 1/2"
" single well)
Full Pan
" single well)
20" PAN
+ 1/3 PAN
18"
BENEATH
ischarge
(for Open
Bottom
Discharge
(for Pans)
COUNTER
Top D
Well)
1
51
/2" Trim
2
1
X
0
2
A
N
P
50" Cut Out
RDI
BACK TO BACK 20"
Refrigerated Self Service Case
Scale = 3/8"
Full Pan
(12" x 20")
Third Pan
(6" x 12")
2" Tilt
12 X 20
PAN
RDI BACK TO BACK 20"
Refrigerated Self Service Case
Shown with Optional 2" Tilted Pan
1
"
2
/
15
Below
Counter
"
2
/
1
6
14"
Fan
RDI BOWL OPTION
Self-Service
281/2"
RDI-27
2-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
1
one pan &
/3rd design.
415/16"
RDI-27
3-Well
Scale = 1/4"
541/8"
RDI-27
4-Well
Scale = 1/4"
1
51
/2" Trim
50" Cut Out
Scale = 3/8"
"
2
/
1
15
Below
Counter
3
IGSS-RDI-0209
Opening Dimensions
WELL DIMENSIONS
20"
Front to Back 1 well 2 or more wells
Side to Side length 1 wells 2 wells 3 wells 4 wells 5 wells 6 wells 7 wells 8 wells 9 wells 10 wells
27"
Front to Back 1 well 2 or more wells
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 23 7/8" 25 1/8"
cutout 22 1/2" 23 3/4"
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"
flange 30 7/8" 32 1/8"
cutout 29 1/2" 30 3/4"
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"
Installation
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 identifiable 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% relative humidity. DO NOT allow air conditioning, electric fans,
ovens, open doors or windows (etc.) to create air currents around the merchandiser, as this will impair its correct 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, preparation 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 damage to the fixture.
LEVELING
IMPORTANT! IT IS IMPERATIVE THAT THE
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
4
Rev.0209
Installation Continued
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.
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
proved) to cover dotted area shown below.
DO NOT USE PERMAGUM!
Case must be raised correctly, under legs
liberal bead of case joint sealant (NSF Ap-
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.
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 seriously 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 plumbing 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 maintain 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 as Armstrong’s Armaflex.
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.
5
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 refrigeration legend furnished by the store.
Install P-traps (oil traps) at the base of all suction line vertical 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 temperatures. 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.
IGSS-RDI-0209
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 controller manufacturers information sheet. Sensors for electronic 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 refrigeration stub. A Sporlan balanced port expansion valve model
is furnished as standard equipment, unless otherwise specified by customer.
EXPANSION VALVE ADJUSTMENT
Expansion valves must be adjusted to fully feed the evaporator. 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 operating 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.
6
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