FEDERAL INDUSTRIES Toll Free 1 (800) 356-4206
215 FEDERAL AVE WI Phone (608) 424-3331
Belleville, WI 53508 Fax (608) 424-3234
E3788-20
Rev C 02/24/2026
INSTALLATION & OPERATION INSTRUCTIONS
ITR & ITRSS: Self-Contained & Remote Refrigerated
ITD, ITDSS, & ITDSSF: Non-Refrigerated
KEEP THIS MANUAL FOR FUTURE REFERENCE
Engineering and technical data are subject to change without notice
E3788-20 Rev C 02/24/2026
2
Contents
A) INTRODUCTION ................................................................................................................... 6
SERIAL NUMBER RECORD & REGISTRATION .............................................................................. 6
B) WARNING LABELS & SAFETY INSTRUCTIONS ......................................................................... 7
C) REFRIGERATION WARNING ................................................................................................... 9
INSTALLATION-REPAIR-DECOMMISSIONING ............................................................................. 9
D) GENERAL ELECTRICAL & GROUNDING ................................................................................ 17
Refrigerated Permanent Connected ..................................................................................... 17
Refrigerated Floor Models: ............................................................................................... 18
Refrigerated Counter Models: .......................................................................................... 18
Refrigerated Cord Connected (OPTION) ............................................................................ 18
Non-Refrigerated Cord Connected (STANDARD) ................................................................... 19
Non-Refrigerated Floor Models: ....................................................................................... 19
Non-Refrigerated Counter Models: ................................................................................... 20
E) REFRIGERATED MODEL & COMPONENT DESCRIPTIONS ...................................................... 20
Self-Contained Models .................................................................................................... 20
Remote Models .............................................................................................................. 21
Condensate Evaporator Pan and Pump ............................................................................. 21
Electronic Expansion Valve (EEV) ..................................................................................... 22
Refrigerant detection and mitigation system ..................................................................... 23
F) BASE COMPONENT LAYOUTS.............................................................................................. 25
Refrigerated Self Contained Models ................................................................................. 25
Refrigerated Remote Models ............................................................................................ 29
Floor ITD, ITDSS & ITDSSF NON-Refrigerated ..................................................................... 34
G) PRIOR TO UNPACKING EQUIPMENT ................................................................................. 34
Inspection for Shipping Damage ...................................................................................... 34
H) INSTALLATION INSTRUCTIONS ........................................................................................ 35
Locating Display Case ..................................................................................................... 35
E3788-20 Rev C 02/24/2026
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Floor Model Location ...................................................................................................... 35
Counter Model Location .................................................................................................. 35
Additional Parts Shipped with Unit ................................................................................... 35
CABINET PREPARATION .................................................................................................. 36
Removing Case from Shipping Skid and General Installation .............................................. 39
Counter Case Install ....................................................................................................... 40
Cabinet Grills & Air Duct (All refrigerated self-contained with optional condensate evaporator
pan and All remotes) ....................................................................................................... 41
Joining Cases (No End Glass Between) ............................................................................. 43
Joining Floor Model Bases (No End Panels Between) .......................................................... 44
Joining Cases (Single Glass End Between) ........................................................................ 45
Joining Floor Model Bases (Single End Panels Between) ..................................................... 46
Remote Refrigeration Installation ..................................................................................... 46
I) COMPARTMENT PANEL REMOVAL ....................................................................................... 49
Refrigerated Floor Models: Back Panel .............................................................................. 49
Refrigerated and Non-Refrigerated Floor Models: Front Panel ............................................. 49
Refrigerated Counter Models: Front and Rear Panels ......................................................... 50
NON-Refrigerated Models Top Cover ................................................................................ 50
END PANEL INSTALLATION .............................................................................................. 51
J) SHELVING INSTALLATION & REMOVAL ................................................................................. 53
Shelf Bracket & Supports ................................................................................................. 53
Special Length Shelf Installation ...................................................................................... 55
LED Light Plug Connection ............................................................................................... 55
Glass Shelves ................................................................................................................. 56
Horizontal Dual Zone Shelf Divider Installation .................................................................. 57
K) FRONT AND REAR DOORS REMOVAL ................................................................................... 58
ITR, ITD, ITDSS, AND ITDSSF Models ................................................................................. 58
ITRSS Models .................................................................................................................. 59
L) SECURITY NIGHT COVER (OPTION) ..................................................................................... 60
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Removal: ........................................................................................................................ 60
Installation: .................................................................................................................... 60
M) OPERATING INSTRUCTIONS ............................................................................................ 61
Control Description ......................................................................................................... 61
ELECTRONIC CONTROL OPERATION (Refrigerated Models Only) ....................................... 65
Initial Startup .................................................................................................................. 65
Placing Product into Case ................................................................................................ 66
N) MAINTENANCE ............................................................................................................... 67
Cleaning Condenser Coil (All Self Contained Refrigerated Models) ..................................... 67
Top LED Light Replacement ............................................................................................. 68
Shelf LED Light Replacement ........................................................................................... 68
O) CLEANING INSTRUCTIONS .............................................................................................. 69
Daily Cleaning ................................................................................................................ 69
Weekly Cleaning ITR, ITD, ITDSS AND ITDSSF Models ........................................................ 70
Weekly Exterior Cleaning All............................................................................................. 74
P) SERVICE ............................................................................................................................ 76
Pre-Service Checklist ...................................................................................................... 78
Q) SALE & DISPOSAL ........................................................................................................... 79
Owner Responsibility ...................................................................................................... 79
R) MAIN WIRING DIAGRAMS ................................................................................................... 80
Non-Refrigerated ............................................................................................................ 80
Fan Control Option, Refrigerated Self Contained (not available ITRSS models) .................... 81
All Refrigerated Self Contained ........................................................................................ 82
All Refrigerated Remote ................................................................................................... 83
S) REPLACEMENT PARTS ........................................................................................................ 84
Electrical Components .................................................................................................... 84
Refrigeration Components ............................................................................................... 85
Glass Components ......................................................................................................... 85
Rear Doors ..................................................................................................................... 86
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Shelf Components (After 05/01/2025) .............................................................................. 87
Shelf Components (All R290 & After 05/01/2025 On All Other Cases) .................................. 87
Front Doors (ITDSS Only) ................................................................................................. 87
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A) SERIAL NUMBER RECORD & REGISTRATION
Thank you for purchasing a Federal Industries display case. This manual contains important
instructions for installing and servicing the Refrigerated Self-Service Merchandisers. A repair parts
list and wiring diagram are also included in the manual. Read all of these documents carefully before
installing or servicing your case.
WARNING
Read this manual before installing or servicing the case. Keep this manual accessible
and refer to it before performing any work on the equipment. Failure to follow these
instructions could result in personal injury or damage to the case.
WARNING
Electrical components present a risk of shock, arc flash, or serious injury.
Installation and service must be performed only by a licensed electrician.
The component sections of this manual contain technical instructions intended for
persons qualified to perform electrical work.
DANGER
Improper or faulty hookup of electrical components in this case can result in
severe injury or death.
All electrical wiring must be installed in accordance with all applicable local,
regional, and national electrical codes and standards.
It is important to record the model and serial number of your merchandiser for warranty purposes
and for accurate part identification. Please write them in the space provided below for quick
reference.
Case Model__________________________ Serial Number______________________
Register your product online! Visit our website at www.federalindustries.com and register your
product today.
https://federalind.com/support-service/contact-us/register-your-product
E3788-20 Rev C 02/24/2026
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We’re committed to providing you with the best possible experience with your new product. While
this manual covers the essential information you need, it cannot address every question or situation
you may encounter. If you require additional assistance, please contact us:
WARRANTY/TECHNICAL SERVICE DEPARTMENT
Parts Town
1200 Greenbriar Dr.
Addison, IL 60101
Toll Free: (833) 238-8168
Email: techservice@partstown.com
Please refer to the SERVICE section of this manual and complete the pre-service checklist before
contacting us. Providing this information in advance allows us to deliver the most eicient and
eective support possible.
B) WARNING LABELS & SAFETY INSTRUCTIONS
This is the DANGER–Flammable symbol. When you see this symbol on your case
or in the manual, it indicates the presence of flammable materials or vapors. Be
alert to the risk of fire or explosion.
This is the safety-alert symbol. When you see this symbol on your case or in the
manual, be alert to the potential for personal injury or damage to your equipment
This is the notice symbol. When you see this symbol on your case or in the manual,
it highlights important installation, operation, or service information. Ignoring these
instructions may result in damage to the equipment or improper performance.
Be sure you understand all safety messages and always follow recommended precautions and safe operating
procedures.
NOTICE TO EMPLOYERS:
It is your responsibility to ensure that all individuals who install, operate, or
service this equipment are trained, qualified, and fully understand all applicable
safety information, instructions, and procedures.
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Important safety information is presented in this section and throughout the manual. The following signal
words are used in the warning and safety messages:
SYMBOL
SIGNAL
WORD
DEFINITION
DANGER Severe injury or death will occur if you ignore the message.
WARNING Severe injury or death can occur if you ignore the message.
CAUTION Minor injury or damage to your case can occur if you ignore the
message.
NOTICE Important information. Damage to the equipment may occur. Poor
performance may occur.
The warning and safety labels shown throughout this manual are placed on your Federal Industries case at the
factory. Follow all warning label instructions. If any warning or safety labels become lost or damaged, call our
customer service department at (800) 356-4206 for replacements.
LABELS & LOCATIONS
This label is located on the back of the display case
This label is located below the display pan.
This label is located by condensing unit
E3788-20 Rev C 02/24/2026
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C) REFRIGERATION WARNING
INSTALLATION-REPAIR-DECOMMISSIONING
Be sure you understand all safety messages and always follow recommended precautions and safe
operating procedures.
DANGER
Risk of fire or explosion. Flammable refrigerant used. To be repaired only by
trained service personnel. Do not puncture refrigerant tubing. Dispose of
properly in accordance with federal or local regulations.
Consult repair manual/owner’s guide before attempting to service this product. All safety
precautions must be followed.
Follow handling instructions carefully in compliance with national regulations.
Auxiliary devices which may be ignition sources shall not be installed in the ductwork, other than
auxiliary devices listed for use with the specific appliance.
Do not store explosive substances (such as aerosol cans with a flammable propellant) in this case.
Do not use an electrical appliance INSIDE the food storage compartments unless its type is
recommended by manufacturer.
Flammable refrigerant type specified on case nameplate is on the serial label.
APPLIES TO R290 REFRIGERANT MODELS ONLY! Contains a charge of R290 refrigerant with a lower
flammability limit (LFL) of .038kg/m³. See data plate for amount of charge.
APPLIES TO R454C REFRIGERANT MODELS ONLY! Contains a charge of R454C refrigerant with a
lower flammability limit (LFL) of .0.286kg/m³. See data plate for amount of charge.
WARNING
- Do NOT use means to accelerate the defrosting process or to clean, other than those
recommended by the manufacturer
- The appliance SHALL be stored in a room without continuously operating ignition sources
For example: open flames, an operating gas appliance, or an operating electric heater
- Do NOT pierce or burn.
- Be aware that refrigerants may not contain an odor
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1. Qualification:
All refrigeration and electrical maintenance, service, and repair must be performed by a Certified
Technician that is trained in the required flammable refrigerants safety procedures. Technicians must
read the entire section
E3788-20 Rev C 02/24/2026
11
REFRIGERATION WARNING section of this manual.
Work requiring qualification includes but is not limited to the following:
a. breaking into the refrigerating circuit.
b. opening of sealed components.
c. opening of ventilated enclosures.
2. Required Safety Checks:
Prior to beginning work on systems containing FLAMMABLE REFRIGERANTS, perform the following
safety checks to ensure that the risk of ignition is minimized prior to conducting work on the system.
☐ Discharge all capacitors using safe, non-sparking method to prevent accidental arcing.
☐ Ensure no live electrical components or wiring are exposed during charging, recovering or
purging.
☐ Confirm continuity of earth bonding.
☐ Ensure all personnel (direct, contracted, etc.) in the area are informed of the nature of the
work being performed.
☐ Ensure the work area is open or adequately ventilated.
o Ensure ventilation is maintained during work.
o Ventilation should disperse any released refrigerant and preferably discharge it
externally to atmosphere.
o Work in confined spaces shall be avoided.
☐ Survey the surrounding area to ensure there are NO flammable hazards, ignition sources, or
other unsafe conditions present.
o All possible ignition sources, including cigarette smoking, shall be kept suiciently far
away from the site of installation, repairing, removing and disposal, during which
refrigerant can potentially be released to the surrounding area.
o “NO Smoking” signs shall be posted and visible.
☐ Check the area with an appropriate refrigerant detector prior to and during work to ensure the
technician is aware of potentially toxic or flammable vapors.
o Ensure that the leak detection equipment being used is suitable for use with all
applicable refrigerants (e.g., non-sparking, adequately sealed, or intrinsically safe)
o NOTE: The use of silicon sealants can inhibit the eectiveness of some types of leak
detection equipment.
☐ Work shall follow a controlled procedure that prevents release or accumulation of flammable
gas or vapor throughout the process.
☐ No person performing work to or near a REFRIGERATION SYSTEM that involves exposing any
pipe work shall use any sources of ignition in such a manner that it may lead to the risk of fire
or explosion.
☐ Verify the actual REFRIGERANT CHARGE is in accordance with the room size within which the
refrigerant containing parts are installed.
E3788-20 Rev C 02/24/2026
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☐ Verify the ventilation machinery and outlets are operating adequately and are not obstructed.
☐ Verify markings on the equipment continue to be visible and legible.
o Markings and signs that are illegible shall be corrected.
☐ Verify refrigerating pipes and components are installed in a position where they are unlikely to
be exposed to any substance which may corrode refrigerant containing
3. Hot Work Controls
If any hot work is to be conducted on the refrigerating equipment or any associated parts,
☐ Recover or isolate refrigerant prior to beginning hot work (See part 8 of this section)
☐ Appropriate fire extinguishing equipment shall be made readily available before starting work.
☐ A dry chemical or CO2 fire extinguisher should be adjacent to the charging area.
☐ The area shall be adequately ventilated before and during any hot work to safely disperse any
released refrigerant.
4. Electrical Components
☐ Electrical components being changed shall be suitable for the purpose and to the correct
specification so as to minimize the risk of possible ignition due to incorrect parts.
o At all times, the manufacturer’s maintenance and service guidelines shall be followed.
o If in doubt, consult the manufacturer’s technical department for assistance.
☐ If a fault exists that could compromise safety, then no electrical supply shall be connected to
the circuit until it is satisfactorily resolved. If the fault cannot be corrected immediately but it
is necessary to continue operation, an adequate temporary solution should be used.
5. Repairs to sealed components
☐ During repairs to sealed components, all electrical supplies shall be disconnected from the
equipment being worked upon prior to any removal of sealed covers, etc.
o If it is necessary to have an electrical supply to equipment during servicing, then a
permanently operating form of leak detection shall be located at the most critical point
to warn of a potentially hazardous situation.
☐ Measures shall be taken to ensure that work on electrical components does not alter the
casing in such a way that it compromises its level of protection. This includes preventing:
o Damage to cables;
o Excessive number of connections;
o Terminals not made to original specification;
o Damage to seals;
o Incorrect fitting of glands;
o etc.
☐ Ensure that the apparatus is mounted securely.
☐ Ensure that seals or sealing materials have not degraded to the point that they no longer
prevent the egress of flammable vapors.
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☐ Replacement parts shall be in accordance with the manufacturer’s specifications.
6. Repairs to intrinsically safe components
Note: Intrinsically safe components do not have to be isolated prior to working on them
☐ Do not apply any permanent inductive or capacitance loads to the circuit without ensuring
that this will not exceed the permissible voltage and current permitted for the equipment in
use.
☐ Replacement parts shall be in accordance with the manufacturer’s specifications to ensure
that the risk of ignition is minimized,
7. Safe Detection of flammable refrigerants:
Under no circumstances shall potential ignition sources be used in the searching for or detection of
refrigerant leaks. A halide torch (or any other detector using a naked flame) shall not be used.
The following leak detection methods are deemed acceptable for all refrigerant systems:
- Electronic leak detectors may be used to detect refrigerant leaks but, in the case of FLAMMABLE
REFRIGERANTS, the sensitivity might not be adequate or might need recalibration.
o Detection equipment shall be calibrated in a refrigerant-free area.
o Ensure that the detector is not a potential source of ignition and is suitable for the
refrigerant used.
o Leak detection equipment shall be set at a percentage of the LFL of the refrigerant and
shall be calibrated to the refrigerant employed, and the appropriate percentage of gas
(25 % maximum) is confirmed.
- Leak detection fluids are also suitable for use with most refrigerants but the use of detergents
containing chlorine shall be avoided as the chlorine can react with the refrigerant and corrode the
copper pipework. Examples of leak detection fluids are
o bubble method,
o fluorescent method agents.
If a leak is suspected, all naked flames shall be removed/extinguished.
If a leakage of refrigerant is found which requires brazing, all the refrigerants shall be recovered from
the system, or isolated (by means of shut o valves) in a part of the system remote from the leak.
8. Removal and Evacuation:
Prior to breaking into the refrigerant circuit for any purpose, the following procedure shall be adhered
to due to the added flammability risk:
a. Safely remove refrigerant following local and national regulations.
b. Purge the circuit with oxygen-free nitrogen (OFN).
c. Evacuate (optional for R454C).
d. Purge the circuit with oxygen-free nitrogen (OFN) (optional for R454C).
e. Open the circuit by cutting or brazing.
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- The refrigerant shall be recovered into the correct recovery cylinders.
- Due to use of flammable refrigerants, the system shall be purged with oxygen-free nitrogen to
render the appliance safe for flammable refrigerants. This process might need to be repeated
several times.
o Compressed air or oxygen shall not be used for purging flammable refrigerant systems.
- For appliances containing flammable refrigerants, refrigerants purging shall be achieved by
breaking the vacuum in the system with oxygen-free nitrogen and continuing to fill until the
working pressure is achieved, then venting to atmosphere, and finally pulling down to a vacuum
(optional for R454C). This process shall be repeated until no refrigerant is within the system
(optional for R454C). When the final oxygen-free nitrogen charge is used, the system shall be
vented down to atmospheric pressure to enable work to take place.
- Ensure that the outlet for the vacuum pump is not close to any potential ignition sources and that
ventilation is available.
9. Charging procedures:
In addition to conventional charging procedures, the following requirements shall be followed.
☐ Ensure that contamination of dierent refrigerants does not occur when using charging
equipment.
☐ Hoses or lines shall be as short as possible to minimize the amount of refrigerant contained in
them.
☐ Cylinders should be kept in an appropriate position according to the instructions.
☐ Ensure that the REFRIGERATING SYSTEM is earthed prior to charging the system with
refrigerant.
☐ Label the system when charging is complete (if not already).
☐ Extreme care shall be taken not to overfill the REFRIGERATING SYSTEM.
Prior to recharging the system, it shall be pressure-tested with the appropriate purging gas. The
system shall be leak-tested on completion of charging but prior to commissioning. A follow up leak
test shall be carried out prior to leaving the site.
10. Decommissioning:
Before carrying out this procedure, it is essential that the technician is completely familiar with the
equipment and all its details. It is recommended good practice that all refrigerants are recovered
safely. Prior to the task being carried out, an oil and refrigerant sample shall be taken in case analysis
is required prior to re-use of recovered refrigerant. It is essential that electrical power is available
before the task commences.
a. Become familiar with the equipment and its operation.
b. Isolate the system electrically.
c. Before attempting the procedure, ensure that:
i. Mechanical handling equipment is available, if required, for handling refrigerant cylinders.
ii. All personal protective equipment is available and is being used correctly.
E3788-20 Rev C 02/24/2026
15
iii. The recovery process is supervised at all times by a competent person.
iv. Recovery equipment and cylinders conform to the appropriate standards.
d. Pump down the refrigerant system, if possible.
e. If a vacuum is not possible, make a manifold so that refrigerant can be removed from various
parts of the system.
f. Make sure that the cylinder is situated on the scales before recovery takes place.
g. Start the recovery machine and operate in accordance with instructions.
h. Do not overfill cylinders (no more than 80% volume liquid charge).
i. Do not exceed the maximum working pressure of the cylinder, even temporarily.
j. When the cylinders have been filled correctly and the process completed, make sure that the
cylinders and the equipment are removed from the site properly and all isolation valves on the
equipment are closed o.
k. Recovered refrigerant shall not be charged into another refrigerating system unless it has been
cleaned and checked.
11. Labeling:
Equipment shall be labeled stating that it has been de-commissioned and emptied of refrigerant. The
label shall be dated and signed. For appliances containing flammable refrigerants, ensure that there
are labels on the equipment stating the equipment contains flammable refrigerant.
12. Recovery:
When removing the refrigerant from a system, either for servicing or decommissioning, it is
recommended good practice that all refrigerants are removed safely.
When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery
cylinders are employed. Ensure that the correct number of cylinders for holding the total system
charge is available. All cylinders to be used are designated for the recovered refrigerant and labeled
for that refrigerant (i.e., special cylinders for the recovery of refrigerant). Cylinders shall be complete
with pressure-relief valve and associated shut-o valve in good working order. Empty recovery
cylinders are evacuated and, if possible, cooled before recovery occurs.
The recovery equipment shall be in good working order with a set of instructions concerning the
equipment that is at hand and shall be suitable for the recovery of all appropriate refrigerants
including, when applicable, FLAMMABLE REFRIGERANTS. In addition, a set of calibrated weighing
scales shall be available and in good working order. Hoses shall be complete with leak-free
disconnect coupling and in good condition. Before using the recovery machine, check that it is in
satisfactory working order, has been properly maintained and that any associated electrical
components are sealed to prevent ignition in the event of refrigerant release. Consult manufacturer if
in doubt.
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The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery cylinder,
and the relevant waste transfer note arranged. Do not mix refrigerants in recovery units and
especially not in cylinders.
If compressors or compressor oils are to be removed, ensure that they have been evacuated to an
acceptable level to make certain that FLAMMABLE REFRIGERANT does not remain within the
lubricant. The evacuation process shall be carried out prior to returning the compressor to the
suppliers. Only electric heating to the compressor body shall be employed to accelerate this
process. When oil is drained from a system, it shall be carried out safely.
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D) GENERAL ELECTRICAL & GROUNDING
DANGER
Improper or faulty hookup of electrical components in the display case can
result in sever injury or death
Important: Read Section REFRIGERATION WARNING INSTALLATION-REPAIR-
DECOMMISSIONING” of this manual starting on page 9.
All refrigeration and electrical work shall be performed by certified technicians.
1 REF. E3788 EXCEL FILE
Refrigerated Permanent Connected
- Only a licensed electrician shall perform all case electrical connections.
- All electrical wiring connections shall be done in accordance with all applicable local, regional,
amd/or national electrical standards.
- A separate circuit for each display case is required to prevent other appliances on the same
circuit from overloading the circuit and causing malfunction.
- The electrical service must be grounded upon installation.
MODEL PERMANENT CONNECTED AMPS CORD CONNECT AMPS/NEMA PLUG COMPRESSOR LRA
ITR3626 & ITR3634 MIN CIRCUIT AMPACITY12.4/ MAX FUSE SIZE 20 TOTAL AMPS 12.4 / 5-20 TOTAL AMPS 12.4 / 5-20
ITR4826 & ITR4834 MIN CIRCUIT AMPACITY12.4/ MAX FUSE SIZE 20 TOTAL AMPS 12.4 / 5-20 TOTAL AMPS 12.4 / 5-20
ITR6026 & ITR6034 MIN CIRCUIT AMPACITY12.4/ MAX FUSE SIZE 20 TOTAL AMPS 12.4 / 5-20 TOTAL AMPS 12.4 / 5-20
ITRSS3626 & ITRSS3634 MIN CIRCUIT AMPACITY12.4/ MAX FUSE SIZE 20 TOTAL AMPS 12.4 / 5-20 TOTAL AMPS 12.4 / 5-20
ITRSS4826 & ITRSS4834 MIN CIRCUIT AMPACITY12.4/ MAX FUSE SIZE 20 TOTAL AMPS 12.4 / 5-20 TOTAL AMPS 12.4 / 5-20
ITRSS6026 & ITRSS6034 MIN CIRCUIT AMPACITY 9.2/ MAX FUSE SIZE 15 TOTAL AMPS 9.2 / 6-15 TOTAL AMPS 9.2 / 6-15
MODEL VOLTAGE PERMANENT CONNECTED AMPS
ITR3626 & ITR3634
ITRSS3626 & ITRSS3634
ITR4826 & ITR4834
ITRSS4826 & ITRSS4834
120V/60H/1PH MIN CIRCUIT AMPACITY 15/ MAX FUSE SIZE 15
ITR6026 & ITR6034
ITRSS6026 & ITRSS6034
120V/60H/1PH MIN CIRCUIT AMPACITY 15/ MAX FUSE SIZE 15
MODEL PERMANENT CONNECTED AMPS CORD CONNECT AMPS/NEMA PLUG
ITD3626 & ITD3634
ITDSS3626 &ITDSS3634
ITDSS3626F & ITDSS3634F
MIN CIRCUIT AMPACITY 15/ MAX FUSE SIZE 15 TOTAL AMPS 2.0 / 5-15
ITD4826 & ITD4834
ITDSS 4826 & ITDSS4834
ITDSS4826F & ITDSS4834F
MIN CIRCUIT AMPACITY 15/ MAX FUSE SIZE 15 TOTAL AMPS 2.0 / 5-15
ITD6026 & ITD6034
ITDSS6026 & ITDSS 6034
ITRSS6026F & ITRSS6034F
MIN CIRCUIT AMPACITY 15/ MAX FUSE SIZE 15 TOTAL AMPS 2.0 / 5-15
120V/60H/1PH
120V/60H/1PH
120V/60H/1PH
REMOTE
NOT AVAILABLE
120V/60H/1PH
120V/60H/1PH
230/60H/1PH
DRY NON REFRIGERATED
VOLTAGE
SELF CONTAINED
VOLTAGE
120V/60H/1PH
120V/60H/1PH
120V/60H/1PH
E3788-20 Rev C 02/24/2026
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- See the electrical data plate located at the rear of the case for proper circuit size and wire
ampacity.
- The electrical connection box is accessible from the rear of the case with rear grill removed. See
grill removal section of this manual for grill removal procedure.
Refrigerated Floor Models:
FIELD CONNECTION BOX
FLOOR CONDUIT
CONNECTION .875
O
FLOOR CONDUIT
CONNECTION .875
O
CONDUIT OR
POWER CORD
CONNECTION .875
O
MISC ACCESS HOLE
MISC ACCESS HOLE
REAR BASE PANEL
Refrigerated Counter Models:
FIELD CONNECTION BOX
CONDUIT OR
POWER CORD
CONNECTION .875
O
MISC ACCESS HOLE
MISC ACCESS HOLE
REAR COMPARTMENT PANELS
CONDUIT OR
POWER CORD
CONNECTION .875
O
Refrigerated Cord Connected (OPTION)
- A factory installed optional power cord is properly sized to the amperage requirements of the
case. See the electrical data plate located on the rear exterior of the case for the proper circuit
size for each case.
- -The cord is factory installed protruding from the rear corner of the case as noted in above
drawings.
CAUTION
Risk of Electric Shock. If the cord or plug becomes damaged, replace only with a
cord and plug of the same type.
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- A separate circuit for each display case is required to prevent other appliances on the same
circuit from overloading the circuit and causing malfunction.
Non-Refrigerated Cord Connected (STANDARD)
- A factory installed power cord is properly sized to the amperage requirements of the case. See
the electrical data plate located on the rear exterior of the case for the proper circuit size for each
case.
- The cord is factory installed protruding from the rear corner of the case as noted in below
drawings.
- A separate circuit for each display case is required to prevent other appliances on the same
circuit from overloading the circuit and causing malfunction.
- Only a licensed electrician can move the electrical cord connections to opposite end of case as
shown in drawings below.
Non-Refrigerated Floor Models:
STANDARD
POWER CORD
CONNECTION.
OPTIONAL
POWER CORD LOCATION.
CORD CAN BE CHANGED
TO THIS SIDE IN FIELD.
CAUTION
Risk of Electric Shock. If the cord or plug becomes damaged, replace only with a
cord and plug of the same type.
E3788-20 Rev C 02/24/2026
20
Non-Refrigerated Counter Models:
STANDARD
POWER CORD
CONNECTION.
OPTIONAL
POWER CORD
LOCATION.
CORD CAN BE CHANGED
TO THIS SIDE IN FIELD.
E) REFRIGERATED MODEL & COMPONENT DESCRIPTIONS
Self-Contained Models
The self-contained models are shipped from the factory with a completely operational R290
refrigeration system and require no modifications or adjustments upon installation. Case must be
installed as per the installation section of this manual to provide proper condensing air cooling.
The dual pressure control is used as a safety device and is factory set. The pressure control works on
a dierential. The low-pressure side is to protect the compressor in the case of refrigerant loss. The
high-pressure side is to protect from system failure causing too high of system pressure.
Note: The condenser fan runs continuously.
This unit also has a defrost timer that will shut the compressor o a set number of times per day to
ensure a full defrost occurs. The compressor will remain o until the either the o time is reached or
until the temperature sensor on the coil reaches a set temperature, which ever happens first.
Self-Contained Refrigeration Operation
The unit temperature is controlled by an electronic control that senses air temperature and turns
refrigeration on and o as required to maintain proper temperature.
The electronic control will also sense a frosted coil that requires a defrost cycle and shuts o
refrigeration until defrost is complete. There are also a defined number of scheduled defrosts that
also shut the refrigeration o to ensure a full defrost.
E3788-20 Rev C 02/24/2026
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Remote Models
Use pressure gauges to set pressure control.
Remote Refrigeration Operation
Remote models use R454C refrigerant and ship from the factory with the evaporator coil, expansion
valve, and refrigerant solenoid valve. The required high-low-pressure control and remote condenser
can be provided as a factory option and will be required to be charged with refrigerant after
installation.
The unit temperature is controlled by an electronic control that senses air temperature and opens
and closes the refrigerant solenoid valve as required to maintain proper temperature.
Once proper temperature is reached the solenoid valve closes and shuts o the refrigeration flow to
the unit and initiates a pump down cycle. This will allow the remote low-pressure switch to open and
shut o the remote compressor. The solenoid will remain closed until the electronic control probe
reaches its “cut in” set point. The electronic control will also sense a frosted coil that requires a
defrost cycle and closes the solenoid until defrost is complete. There are also a defined number of
scheduled defrosts that also ensure a full defrost occurs.
Condensate Evaporator Pan and Pump
Condensate Evaporator (Standard Self-Contained Models)
NOTICE
During normal defrost cycles, steam from the condensate evaporator may be visible
around the case.
The standard Self-Contained case is furnished with an electric condensate evaporator. Plumbing
connections are not required.
MODEL REFRIGERANT REFRIGERATION
PRESSURE
CUT IN
PRESSURE
CUT OUT
ITR3626R
ITR3634R
ITRSS3626R
ITRSS3634R
ITR4826R
ITR4834R
ITRSS4826R
ITRSS4834R
ITR6026R
ITR6034R
ITRSS6026R
ITRSS6034R
R454C
4200 BTUH @
90F/20F
60 LBS 20 LBS
N/A N/A N/A N/A
R454C
3400 BTUH @
90F/20F
60 LBS 20 LBS
E3788-20 Rev C 02/24/2026
22
The condensate evaporator can be removed from the case and the condensate drain can be
plumbed to a drain to conserve energy if desired. Disconnect the condensate evaporator wires at the
condensate evaporator to remove. This must be done by a qualified electrician.
Make sure that the drain line has not been dislodged during shipment and that the drain trap
terminates properly over the water reservoir.
Condensate Pump (Standard Remote, Optional Self Contained)
NOTICE
This unit could be shipped with a condensate pump. The pump has a float that turns
the pump on automatically when needed.
The pump is mounted in the base compartment. The pump should be cleaned and
inspected every 3-4 months.
When unit is shipped with a condensate pump, a condensate discharge hose is supplied from
factory. This hose must be run to a nearby drain. When the condensate pan is full the pump will turn
on and pump water out condensate drain hose. Note Drain hose can be run in vertical direction but
must not exceed height of 15 feet.
NOTICE
There is a piece of cardboard that MUST be removed from the side of the pump to free
up the float. If this is not done, the pump will not turn on and the pan will overflow.
Electronic Expansion Valve (EEV)
A traditional TXV uses springs and a temperature bulb to open and close a valve port that controls the
flow of refrigerant entering the evaporator coil. An electronic expansion valve (EEV) controls the
refrigerant flow much more precisely, increasing the performance and eiciency of the refrigeration
system. The EEV controls the flow of Refrigerant by opening and closing the valve port based on the
response to signals sent to the EEV by an electronic controller. The electronic Control bases these
signals by processing information provided from a temperature sensor and pressure transducer
located on the discharge side of the evaporator coil.
These sensors monitor the evaporator superheat and protect the compressor from any liquid flood
back under low superheat conditions.
EEV Controller Settings
The electronic expansion valve controller also allows the use of dierent types of refrigerants without
the need to change the expansion valve.
E3788-20 Rev C 02/24/2026
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The controller is set from the factory to run on 454C refrigerant (code 54C) and will not need to be
changed unless another refrigerant is used. NOTE: On units with older model EEV’s, the EEV is set to
code 40C.
Note: Check your State and Local regulations for approved refrigerants for your install location.
Federal Industries is not liable for any alternate refrigerants used.
The control is located in the rear center of the base.
Note: Never change any of the other setting other than the refrigerant type. It may also be necessary
to change the superheat setting only when using a dierent refrigerant.
Changing Refrigerant
1) Access the set point mode by pressing and holding the button until Ctl displays on the
screen.
1) Use the up or down arrows to advance through the available set points until rFG displays on
the screen and press the button.
2) Use the up or down arrows until the desired refrigeration displays on the screen and press
and hold the button until rFG once again displays on the screen.
3) Press the button to return to the main menu.
Changing Superheat
1) Access the set point mode by pressing and holding the button until Ctl displays on the
screen.
1) Use the up or down arrows to advance through the available set points until SSP displays on
the screen and press the button.
2) Use the up or down arrows to set the desired superheat displays on the screen and press and
hold the button until SSP once again displays on the screen.
3) Press the button to return to the main menu.
Refrigerant detection and mitigation system
The refrigerant detection system (RDS) shuts down the operation of the refrigerator when a leak is
detected. The system is comprised of 2 or more sensors, a low voltage power supply, 1-2 safety
shuto solenoid valves, and 1-2 refrigerant check valves.
E3788-20 Rev C 02/24/2026
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When a leak is detected by one of the sensors, the internal sensor relay opens to shut o the safety
solenoid valve(s). The refrigeration check valve prevents any back flow from the rest of the external
system from entering the unit that would further contribute to a leak.
The sensor is equipped with an LED status light, indicating the Refrigerant Detection System’s status,
as shown below:
Please note that once a leak is detected and the flow of refrigerant is stopped, the display case will
stop cooling, and any temperature sensitive products must be removed from the unit.
This display case’s fans are a part of the leak mitigation system and are required to remain powered
on as long as there is power to the display case. In the event of a refrigerant leak, the unit’s fans are
required to run to reduce the concentration of flammable refrigerant in and around the unit. When
replacing gas detection sensors, ONLY replace with the original model of sensor provided by Federal.
To replace a faulty sensor, simply unplug the electrical quick connection and unscrew the sensor
fasteners and attach the new sensor to the original sensor location in the original orientation.
After replacing installing the new sensor, power on the display case. After a few seconds, the sensor
light will begin to blink green. (See illustration above) The refrigeration system will be allowed to run
as normal.
The sensor is capable of a long life and will monitor its condition to ensure functionality. If the
sensor’s self-monitoring system detects an issue it will go into a fault state and shut o the flow of
refrigerant to the appliance. See above illustration for fault indication on LED.
The gas inlet exposes the sensing element of the sensor to surrounding gases. The opening in the
sensor housing exposes the humidity and temperature sensors inside the sensor to the environment
and makes them susceptible to pollutants such as volatile chemicals, acids, bases, cleaning and
foaming agents. Exposure to those pollutants should be avoided. Cleaning products might damage
the sensor or temporarily block its gas inlet, inhibiting or delaying the response to the refrigerant.
The use of solvent emitting materials near the sensor, such as PVC cement glues, may lead to
nuisance trips. Solvent emitting materials can lead to high concentrations of volatile gas in the
nearby environment. The gas sensor may sense these concentrations, and trigger a system mitigate
response. Please note that the safety shut-o valve system is installed at the factory. No safety shut-
o valves are required to be installed in the field on new equipment.
E3788-20 Rev C 02/24/2026
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On ALL ITR remotes, there are 3 leak sensors: 1 in the base compartment and 2 in the tub behind the
evaporator coil. Example locations shown below.
F) BASE COMPONENT LAYOUTS
Refrigerated Self Contained Models
Counter ITR & ITRSS 36 Self Contained
POWER SUPPLY
ELECTRICAL
CONNECTION BOX
ACESS
HOLE 2.75
O
ACESS
HOLE 2.75
O
ELECTRICAL
CONNECTION .88
O
17
3
3.7
9
7
36
30
FRONT TOP VIEW
CONDENSING
UNIT
FILTER
DRIER
SIGHT
GLASS
CONDENSATE
PAN OR PUMP
E3788-20 Rev C 02/24/2026
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Counter ITR & ITRSS 48 Self Contained
CONDENSING UNIT
CONDENSATE
EVAPORATOR
OR PUMP
POWER SUPPLY
ELECTRICAL
CONNECTION BOX
ACESS
HOLE 2.75
O
ACESS
HOLE 2.75
O
FILTER DRIER
SIGHT
GLASS
ELECTRICAL
CONNECTION .88
O
13
16
17
9.7
3.0
FRONT TOP VIEW
48
30
Counter ITR60 Self Contained
CONDENSING UNIT
CONDENSATE
EVAPORATOR
OR PUMP
POWER SUPPLY
ELECTRICAL
CONNECTION BOX
ACESS
HOLE 2.75
O
ACESS
HOLE 2.75
O
FILTER DRIER
SIGHT
GLASS
ELECTRICAL
CONNECTION .88
O
60
30
3.7
3
11.5
17
9
9
FRONT TOP VIEW
E3788-20 Rev C 02/24/2026
27
Counter ITRSS60 Self Contained
CONDENSING UNIT
CONDENSATE
EVAPORATOR
OR PUMP
POWER SUPPLY
ELECTRICAL
CONNECTION BOX
ACESS
HOLE 2.75
O
ACESS
HOLE 2.75
O
SIGHT GLASS
60
30
3.7
3
17
9
FRONT TOP VIEW
9
ELECTRICAL
HOLE 7/8
O
FILTER DRIER
Floor ITR & ITRSS 36 Self Contained
CONDENSING UNIT
CONDENSATE
EVAPORATOR
OR PUMP
POWER SUPPLY
ELECTRICAL
CONNECTION BOX
ACESS HOLE
2.75
O
ACESS
HOLE 2.75
O
FILTER DRIER
SIGHT GLASS
ELECTRICAL
CONNECTION .88
O
FRONT TOP VIEW
30.8
36
7
9
17.5
9
3.5
LEG LEVELER PLATES
OR CASTER POCKETS
12
E3788-20 Rev C 02/24/2026
28
Floor ITR & ITRSS 48 Self Contained
CONDENSING UNIT
CONDENSATE
EVAPORATOR
OR PUMP
POWER SUPPLY
ELECTRICAL
CONNECTION BOX
ACESS HOLE
2.75
O
ACESS
HOLE 2.75
O
FILTER DRIER
SIGHT GLASS
ELECTRICAL
CONNECTION .88
O
FRONT TOP VIEW
LEG LEVELER PLATES
OR CASTER POCKETS
48
30.8
17.5
9
9
9.3
3.5
12.0
Floor ITR60 Self Contained
CONDENSING UNIT
CONDENSATE
EVAPORATOR
OR PUMP
POWER SUPPLY
ELECTRICAL
CONNECTION BOX
ACESS HOLE
2.75
O
ACESS
HOLE 2.75
O
FILTER DRIER
SIGHT GLASS
ELECTRICAL
CONNECTION .88
O
FRONT TOP VIEW
LEG LEVELER PLATES
OR CASTER POCKETS
60
30.8
9
17.5
9
12.0
E3788-20 Rev C 02/24/2026
29
Floor ITRSS60 Self Contained
POWER SUPPLY
ELECTRICAL
CONNECTION BOX
ACESS
HOLE 2.75
O
FILTER DRIER
SIGHT GLASS
ELECTRICAL
CONNECTION .88
O
FRONT TOP VIEW
9
17.5
30.8
3.4
9.3
60
CONDO PAN
9.13
Refrigerated Remote Models
ITR Counter Remote
E3788-20 Rev C 02/24/2026
30
ITR Floor Remote
E3788-20 Rev C 02/24/2026
31
ITRSS Counter Remote
E3788-20 Rev C 02/24/2026
32
ITRSS Floor Remote
E3788-20 Rev C 02/24/2026
33
E3788-20 Rev C 02/24/2026
34
Floor ITD, ITDSS & ITDSSF NON-Refrigerated
There are no components in the base on NON-Refrigerated models so no base layout is provided
Light Power Supply is located on top of case under the top cover. See Removal Section of this
Manual.
(4) TOP COVER SCREWS
TOP COVER
LIGHT POWER
SUPPLY
G) PRIOR TO UNPACKING EQUIPMENT
Inspection for Shipping Damage
You are responsible for filing all freight claims with the delivering truck line. Inspect all cartons and
crates for damage as soon as they arrive. If damage is noted to shipping crates, cartons, or if a
shortage is found, note this on the bill of lading (all copies) prior to signing.
If damage is discovered when the case is uncrated, immediately call the delivery truck line and
follow-up the call with a written report indicating concealed damage to your shipment. Ask for an
immediate inspection of your concealed damaged item. Crating material must be retained to show
the inspector from the truck line
E3788-20 Rev C 02/24/2026
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H) INSTALLATION INSTRUCTIONS
Important: Read Section REFRIGERATION WARNING INSTALLATION-REPAIR-
DECOMMISSIONING of this manual starting on page 9.
All refrigeration and electrical work shall be performed by certified technicians.
The installation of the appliance and the refrigerant shall only be performed by
Federal-approved Service or suitably qualified person.
The appliance shall be installed in accordance with safety standards ANSI/ASHRAE 15.
The appliance shall not be installed in public corridors or lobbies.
Case meets requirements for safe operation in climate class 3 environment. (Dry bulb temperature,
77°F; Relative humidity 60%). This is not a performance indication.
This case is designed for performance in NSF TYPE 1 environment: Maximum Ambient Temperature
cannot exceed 75°F and Maximum Relative Humidity of 55%.
Locating Display Case
The case must be located where it is not subjected to the direct rays of the sun, heating ducts, grills,
radiator, or ceiling fans, nor should it be located near open doors or main door entrances. Also, avoid
locations where there is excessive air movement or air disturbances.
Floor Model Location
The case requires a minimum of 36” clearance on side of air intake or air discharge. Do not locate
case with front or back tight against the wall.
No clearance is needed on sides of the unit.
Counter Model Location
The counter units are designed to be placed on or into the top of a cabinet counter.
The refrigerated cases require special consideration of cabinet design to allow condenser air to enter
intake and discharge from cabinet space. The requirements for specific cases outlined in this section
must be followed. Failure to follow these instructions will void warranty.
Additional Parts Shipped with Unit
Remove bubble wrap and packing material for all shelves and panels, brackets, etc. If it is necessary
to remove tape residue from plastic materials, use cleaning compounds recommended in the
cleaning section of this manual. Install panels and shelving as described in the proper section of this
manual.
E3788-20 Rev C 02/24/2026
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CABINET PREPARATION
ITD, ITDSS & ITDSSF Non-Refrigerated Model Cabinet Mounting
The ITD models set directly on top of counter. The Case must be attached and sealed to top of
counter to prevent counter from moving. Counter will require (2) 3/8” dia. holes to be drilled through
the countertop surface to attach case to counter. Use the diagram below for hole location
Place case on to counter and fasten from under cabinet with (2) 10-32 screws and washers provided.
The case must be sealed to the counter using a NSF Listed Sealant.
IMPORTANT: When placing cases in a line up the number of end panels used will be dierent. The
cut-out and hole placement dimension will need to be adjusted for each specific line-up
arrangement.
ITR Refrigerated Models Cabinet Mounting
The ITR models have a large compartment hanging from the bottom of case. On the Self-Contained
models it contains the condenser and condensate evaporator. On the Remotes it contains the
condensate pump or evaporator, fan, and other electrical components. This compartment hangs
E3788-20 Rev C 02/24/2026
37
inside the cabinet compartment, and the interior of the cabinet must be open to allow space for this
compartment.
Cabinet Cutout
The countertop must be cut to allow the case’s base and condenser compartment to drop into the
cabinet interior.
On refrigerated self-contained units with an optional condensate evaporator pan, the Grill cut outs
must be cut on the front and/or back of cabinet to allow air flow in and out of refrigeration
compartment as determined by desired layout. (See section Cabinet Grills & Air Duct (All refrigerated
self-contained with optional condensate evaporator pan and All remotes))
On refrigerated remote units, a Grill cutout MUST be cut in front and back of cabinet to allow air flow
in and out of the refrigeration compartment. This orientation cannot be changed.
Use the diagrams below for cutout dimensions.
IMPORTANT: When placing cases in a line up the number of end panels used will be
dierent. The cut-out and hole placement dimension will need to be adjusted for each
specific line-up arrangement. See Continuous Line up drawing below.
Self-Contained cutouts:
27.37
2.00" TO 3.5" REF FROM TOP
CUT OUT TO BACK OF DOOR
ITR 48" WIDE 45.5"
ITR 60" WIDE 57.5"
TOP CUT OUT
GRILL CUT OUTS
C
L
FRONT
BACK
BACK
3.00 MAX
FROM TOP TO
DOOR CUT OUT
14.0
10.5
10.5
14.0
4.25 FROM TOP OF
COUNTER TO TOP OF
GRILL CUTOUT
6.7
6.7
GRILL CUT OUTS
L
BACK
3.00 MAX
FROM TOP TO
DOOR CUT OUT
9.6
10.5
4.25 FROM TOP OF
COUNTER TO TOP OF
GRILL CUTOUT
9.6
10.5
5.2
5.2
C
ITR 36" WIDE 33.5"
27.37
TOP CUT OUT
FRONT
BACK
CENTER TOP CUTOUT
WITH CENTER OF REAR DOORS
CENTER TOP CUTOUT
WITH CENTER OF REAR DOORS
OF CUT OUT
OF CUT OUT
E3788-20 Rev C 02/24/2026
38
Remote cutouts
Remotes require 1 cutout in the back and 1 cutout in the front on the same end of the counter. This
configuration CANNOT be changed.
GRILL CUT OUT
C
L
BACK
3.00 MAX
FROM TOP TO
DOOR CUT OUT
10.5
14.0
6.7
GRILL CUT OUT
L
BACK
3.00 MAX
FROM TOP TO
DOOR CUT OUT
9.6
10.5
5.2
C
OF CUT OUT
OF CUT OUT
4.25 FROM TOP OF
COUNTER TO TOP
OF GRILL CUTOUT
4.25 FROM TOP OF
COUNTER TO TOP
OF GRILL CUTOUT
GRILL CUT OUT
C
L
FRONT
3.00 MAX
FROM TOP TO
DOOR CUT OUT
10.5
14.0
6.7
GRILL CUT OUT
L
FRONT
3.00 MAX
FROM TOP TO
DOOR CUT OUT
9.6
10.5
5.2
C
OF CUT OUT
OF CUT OUT
4.25 FROM TOP OF
COUNTER TO TOP
OF GRILL CUTOUT
4.25 FROM TOP OF
COUNTER TO TOP
OF GRILL CUTOUT
Continuous Line Up Cut Outs
Note: Dry Cases do not require cut out in counter
CASES WITH NO CENTER
GLASS BETWEEN CASES
1.00
BETWEEN CUT OUTS
CASES WITH (1) 3/4" CENTER
GLASS BETWEEN CASES
1.75
BETWEEN CUT OUTS
LOCATE REAR GRILLS
AS SHOWN IN THE BACK VIEW
DIAGAMS ABOVE.. USE THE
CENTER OF CUT OUT TO
LOCATE GRILLS..
LOCATE REAR GRILLS
AS SHOWN IN THE BACK VIEW
DIAGAMS ABOVE.. USE THE
CENTER OF CUT OUT TO
LOCATE GRILLS..
LOCATE REAR GRILLS
AS SHOWN IN THE BACK VIEW
DIAGAMS ABOVE.. USE THE
CENTER OF CUT OUT TO
LOCATE GRILLS..
LOCATE REAR GRILLS
AS SHOWN IN THE BACK VIEW
DIAGAMS ABOVE.. USE THE
CENTER OF CUT OUT TO
LOCATE GRILLS..
E3788-20 Rev C 02/24/2026
39
Removing Case from Shipping Skid and General Installation
CAUTION
Do not push or pull against the top end glass, or door frames and do not pull-on
end panels when removing the case from the skid or moving the case.
Case damage or glass breakage will result. Broken glass may result in injury.
1) Remove crate top and sides and note missing or damaged items as explained in the pre-
installation procedures outlined above.
1) Move the case as near as possible to the final location and before removing it from the shipping
skid.
2) Prepare cabinet according to instructions in this section that pertain to your model.
3) For Floor Models
a) There are (4) bolts through the skid and into each corner of the base of unit. Remove the front
and back base panels as described in this manual. Remove the (4) nuts and bolts holding unit
to skid.
b) Lift the case o of skid and into required position. Only lift the case from under the front and
rear lips on base or frame of unit.
c) The case must be level for proper drainage of defrost condensate to the condensate
evaporator or pump. Using the wrench provided level and square the case as needed by
adjusting the leg leveler in each corner of base.
d) The leveled case must be sealed to the floor using an NSF Listed Sealant.
4) For Counter Models
e) The case is held to skid with (4) brackets on each outside corner of the case. Remove the
screws that secure these (4) brackets to the skid and case.
f) The counter cases are shipped with end glass removed and lifting handles are provided on
each side of case. Using lifting handles lift the case o skid and into required position. Once
case is placed into position remove lifting handles and install end glass as described in End
Glass Installation Section
g) The countertop that the case is placed on must be level for proper drainage of defrost
condensate to the condensate evaporator or pump.
h) The case must be sealed to the counter using an NSF Listed Sealant.
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Counter Case Install
The Inner Outer Duct Assemblies and Retainer Brackets are shipped attached to the case
refrigeration compartment. The Duct Assemblies and Retainer Brackets must be removed before
setting case into cabinet opening. To disassemble remove the (8) screws holding each Duct
Assembly to the louvered panel also remove the (2) screws holding each Retainer Bracket.
Lift handles and screws are shipped loose with case. To use the provided handles, remove the end
glass panels as described in the End Panel Installation section of this manual. There are holes
provided in the side rails of case in the location shown below. Attach handles using the provided 1/4-
20 screws. Be sure to use gloves to prevent injury and use handles to lift case into cabinet. Once
case is placed into cabinet remove the (4) handles and install side glass as described in End Panel
Installation section of this manual.
LIFT HANDLES
Once case is in place it must be secured to prevent it from moving during use. Reattach the Retainer
Brackets that were previously removed in same location using the #8 hex head screws. Push bracket
up tight to bottom of counter top and tighten screws. Predrill (4) 5/32 holes ½” deep into the counter
top. (Be careful not to drill through top of counter)
E3788-20 Rev C 02/24/2026
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RETAINER
BRACKETS
(2) #10 X 5/8 SCREWS
SCREW INTO BOTTOM OF
COUNTER TOP. PRE DRILL 5/32 HOLES
1/2" DEEP. BECARFUL NOT TO DRILL
THROUGH TOP OF COUNTER.
(2) #8 HEX HEAD
SCREWS ATTACHED
TO CASE
Cabinet Grills & Air Duct (All refrigerated self-contained with optional condensate
evaporator pan and All remotes)
Important: Federal Industries reserves the right to deny warranty if the cabinet is not
ducted to allow proper condenser and condensate air intake and discharge, or if the
cabinet louvers are not installed properly, or if condenser air intake and discharge air is
blocked or located near a source of heat.
The condenser air intake and discharge must be separated and vented out of the cabinet
compartment for case to operate. The required louver grills and expandable ducts for both intake and
discharge are provided with case. On Remotes, the louvers are required to vent the moist
condensate air.
For self-contained units, the louvered panels mounted to condenser compartment are located on
the back of the compartment and solid panels are mounted to front of the compartment when
shipped from factory. This setup is for air intake and discharge out of the back of the cabinet. The
intake and discharge louvered panels can be moved to front of compartment and the solid panels
moved to the back of compartment if air intake and discharge is required out of front of cabinet. They
can also be mixed with one louver panel in front and one in back to allow front condenser air in or out
of front and rear air in or out back.
For remote units, one louvered panel and one solid panel is mounted on the front of the
compartment. One louvered panel and one solid panel is mounted on the back of the compartment
when shipped from factory. This setup is for air intake and discharge through the cabinet to disperse
any flammable vapor in the event of a leak within the cabinet. The intake and discharge louvered
panels shall NOT be moved.
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The Outer Duct must be adjusted so that the gasket seals against the Cabinet Door. Remove the (4)
screws located inside of the Outer Duct. There are multiple holes in the Outer Duct. Move Outer Duct
to desired depth and reinstall (4) screws. Open & close door and be sure Gasket seals hits door
Center the supplied Grills on outside of Cabinet Doors and mark holes onto doors. Drill 1/8 holes into
door in marked positions. With Grill flanges against door screw Grill to cabinet door with (4) supplied
#8 x1-1/4 screws.
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43
Joining Cases (No End Glass Between)
1) If cases are Countertop Models, cut holes in countertop as shown CABINET PREPARATION
section of this manual.
If cases are Floor Models, the cases are joined in the same manner, but bases will also need to be
joined as described in next section.
2) Push cases together and align front and rear of cases.
3) In the holes and slot location shown in above diagram, attach cases together with (4) 1/4-20
screws and nuts provided. If these are Floor Model cases do not tighten screws until completing
The Joining Floor Model Base Section.
4) Slide the top join strip under the glass trim lip in top rear of case as shown in diagram above.
5) Attach Join Trim Strip with (2) 8-18 self-drilling screws.
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Joining Floor Model Bases (No End Panels Between)
The cases are joined in the same manner as described in previous Joining Cases section, but the
bases will also need to be joined.
1) Push cases together and align front and rear of cases.
2) Remove the base front and back panels as described in COMPARTMENT PANEL REMOVAL
Section.
3) Push cases together and align front and rear of cases and bases. If there is a miss-alignment
between cases and the bases, it may be necessary to loosen the screws holding the case to the
base. The mounting brackets are located inside the top of the base and there are (2) in the front
and (2) in the back. This will allow slight adjustment to improve alignment. Retighten these
screws once components are properly aligned
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4) Attach the cases together using (5) 10-32 screws and nuts provided. Attach in the (5) Key slot
location shown in above diagram. There are no fasteners used on the (2) center key slots.
5) Tighten all joining screws and nuts in base and case at this time.
6) Trim the front of base by hooking Base joining trim strip under base valance and up over the top of
base trim.
7) Mark the base in the location of the top holes in the base join trim strip. Drill (2) 9/64 holes in base
and fasten base join trim strip to base using (2) 8-32 screws provided. Attach Join Trim Strip with
(2) 8-32 self-tapping screws.
Joining Cases (Single Glass End Between)
1) If cases are Countertop Models, cut holes in countertop as shown in CABINET PREPARATION
section of this manual.
If cases are Floor Models, the cases are joined in the same manner, but bases will also need to be
joined as described in next section.
1) Push cases together and align front and rear of cases. Be sure case surfaces are tight together.
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2) Attach the cases together with (4) 1/4-20 screws provided. Do not use screws to pull cases
together. Glass bushing may strip or glass may break. If these are Floor Model cases do not
tighten screws until completing The Joining Floor Model Base Section.
Joining Floor Model Bases (Single End Panels Between)
Cases are joined in the same manner as described in previous Joining Cases section, but the bases
will also need to be joined.
1) Remove the base front and back panels as described in COMPARTMENT PANEL REMOVAL
Section.
1) Push cases together and align front and rear of cases and bases.
a) If there is a miss-alignment between cases and the bases, it may be necessary to loosen the
screws holding the case to the base. The mounting brackets are located inside the top of the
base and there are (2) in the front and (2) in the back. This will allow slight adjustment to
improve alignment. Retighten these screws once components are properly aligned.
b) It may also be necessary to adjust leg levelers under base until case fronts align and the base
side is tight together.
2) Attach the Left case to right case using (7) 10-18 screws and washers provided.
NOTE: The bases must be placed tightly together. Do not try to pull cases together with screw or the
panel will strip out.
Remote Refrigeration Installation
There are special requirements for A2L refrigerants such as R454C
Piping material, pipe routing, and installation shall include protection from physical damage in
operation and service, and be in compliance with national and local codes and standards, such as
ANSI/ASHRAE 15, IAPMO Uniform Mechanical Code, ICC International Mechanical Code, or CSA
B52. All field joints shall be accessible for inspection prior to being covered or enclosed
The installation of pipe work shall be kept to a minimum.
Federal remote units are charged with dry nitrogen only. Joints made in the installation where any
part is pre-charged shall be made in accordance with the following:
a) A brazed, welded or mechanical connection shall be made before opening the valves to
permit refrigerant to flow between the refrigerating system parts. A vacuum valve shall be
provided to evacuate the interconnecting pipe and/or any uncharged refrigerating system part.
b) Mechanical connectors used indoors shall comply with ISO14903 or UL 207 or CSA C22.2
No.140.3. When mechanical connectors are reused indoors, sealing parts shall be renewed.
When flared joints are reused indoors, the flare part shall be refabricated.
c) Refrigerant tubing shall be protected or enclosed to avoid damage. Flexible refrigerant
connectors (such as connecting lines between the indoor and outdoor unit) that might be
displaced during normal operation shall be protected against mechanical damage.
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Mechanical connections shall be accessible for maintenance purposes.
Provisions shall be made for expansion and contraction of long runs of pipes. Protection devices,
piping, and fittings shall be protected as far as possible against adverse environmental eects, for
example, the danger of water collecting and freezing in relief pipes or the accumulation of dirt and
debris.
Piping in refrigeration systems shall be designed and installed to minimize the likelihood of hydraulic
shock damaging the system
Do not use steel refrigeration lines with Federal products.
Flexible pipe elements shall be protected against mechanical damage, excessive stress by torsion, or
other forces, and that they should be checked for mechanical damage annually.
Precautions shall be taken to avoid excessive vibration or pulsation. Use vibration dampening tubing
clamps as necessary, especially near sources of vibration.
This unit requires a minimum room area size to operate in. See table below for minimum room areas.
Model A
min
[sq meters] A
lim
[sq ft]
ITR4826 19 200
ITR4834 19 200
ITR6026 19 200
ITR6034 19 200
ITRSS4826 14 150
ITRSS4834 14 150
ITRSS6026 19 200
ITRSS6034 19 200
The condensing unit and pressure control are optionally supplied from the factory for remote
location installation. A remote high low-pressure switch must be mounted and wired by the installer.
The high low-pressure switch must be wired in series with the compressor power supply as shown in
diagram below.
1) Mount condensing unit as close to the remote display case as practical. All refrigeration and/or
electrical materials between the condensing unit and display case are to be supplied by installing
contractor.
2) Route properly sized and designed refrigeration lines from the condensing unit to the cabinet.
Follow line sizing charts and piping instructions in the condenser unit’s manufacturers instruction
manual.
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(a) Horizontal suction lines should be pitched downward towards the condensing unit at least ½”
per 10’ run to aid the oil drainage. A “P” trap must be installed in the suction line at the foot of
every riser to insure oil return.
(b) Suction line must be insulated the entire length with Armaflex (or equivalent). Do not run
liquid line inside insulation with suction line.
3) The remote high/low-pressure control must be mounted, wired and set by the installer.
Leak check condensing unit, cabinet, and all connecting tubing. Cabinet and condensing unit tubing
should be checked to ensure no leaks occurred during shipping or from rough handling. Make certain
all refrigeration valves are opened and evacuate system below 500 microns. System must hold below
500 microns for 1 minute with pump isolated. Charge the system with refrigerant type specified on
the data plates.
REMOTE
HIGH LOW
PRESSURE
CONTROL
LIQUID LINE
SUCTION LINE (INSULATED)
REMOTE
CONDENSING
UNIT
EVAPORATOR
COILS
DISPLAY CASE
EXPANSION
VALVE
HIGH
LOW
LIQUID LINE
SOLENOID VALVE
DRIER/FILTER
FIELD CONNECTION
HOT
FUSED
POWER
SUPPLY
DEFROST
TERMINATE
PROBE
ELECTRONIC
CONTROL
AIR TEMP. CONTROL PROBE
FUSED
CASE
POWER
SUCTION LINE
CHECK VALVE
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I) COMPARTMENT PANEL REMOVAL
DANGER
Electric shock hazard.
Do not operate unit with panels removed.
Refrigerated Floor Models: Back Panel
Note: There is no Back Panel on Non-Refrigerated Models
1) Disconnect power to Display Case.
2) Remove Philips head screws located
in each lower corner of panel.
3) Remove Philips head screws located
on top of panel under the base cross
member.
4) Pull top of panel outward until lip on
bottom of panel clears bottom of base
and remove from case.
Refrigerated and Non-Refrigerated Floor Models: Front Panel
1) Disconnect power to Display Case.
2) Remove (2) front panel phillips head screws from each lower corner of front panel: (1) is located
on front of panel and (1) under the recess behind trim strip. Do not remove the screws holding
trim strip to front panel.
3) Slide the front panel down until it slides out of the top panel retainer lip at the top of the panel.
4) Re-install panel in reverse order.
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Refrigerated Counter Models: Front and Rear Panels
On counter drop in models, the panels are split to allow panel to easily be removed out of swinging
cabinet doors that may have a center post.
Orientation of louver panels must be determined before placing unit into counter and cabinet must
be prepped to allow desired air flow (See Error! Reference source not found. section of this
manual). When removing and installing panels be sure panels are reinstalled in correct location to
allow condenser air flow.
Note: The front and back panels instructions are identical.
1) Disconnect power to Display Case.
2) Open cabinet door to allow access to condenser compartment.
3) Remove (2) panel screws in outside upper and lower corners of panel.
4) Slide slotted end of panel out of center attachment point and remove from case. Note: Do not
remove screws from center attachment point.
NON-Refrigerated Models Top Cover
There are no components in base on NON-Refrigerated models.
Light Power Supply is located on top of case under the top cover.
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1) Disconnect power to Display Case.
1) Remove the (4) 8-32 top cover screws from top cover.
2) Slide the cover back from under the top glass trim.
DANGER
Electric shock hazard. Do NOT remove grounding wire.
A ground wire is connected from case to the Top Cover. To prevent electrical shock Do
Not remove this wire.
END PANEL INSTALLATION
End Glass is shipped installed on Floor model units.
End glass is shipped loose on counter drop in units and will need to be installed after unit is placed in
to counter after lift handles are removed.
When placing cases in a line up, the number of end panels and end panel type may vary. See Case
Line Up Installation (Starting at Joining Cases (No End Glass Between)) section of this manual.
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1) On each side of case there are (3) keyhole mounting slots for easier installation of glass. There is
(1) mounting hole in the front top corner of case to prevent glass from accidently popping o of
end of case.
2) Screw (3) thumb screw about halfway into end panel in location of the keyholes in case as shown.
3) Align end panel thumb screws with keyholes and hook end panel on to case. Do not tighten
thumb screws.
4) Align the mounting hole in top front corner of case with top front hole in end panel and attach with
¼-20 x .5LG thumb screw
5) Tighten all (4) thumb screws by hand.
6) Remove end panels in reverse order.
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J) SHELVING INSTALLATION & REMOVAL
Shelf Bracket & Supports
NOTE: Dierent shelf sizes and quantities are optional from factory so shelf bracket quantity and size
may vary, but procedure is the same.
1) Turn the light switch to the o position. Remove rear doors as described in the “Rear Door
Removal” section of this manual to allow access to interior of case.
2) Follow the instruction in the illustration below. Starting with the longest brackets for bottom shelf
insert (1) of the (2) shelf brackets in the desired shelf standard slot on one side of the case. Place
the long second shelf bracket in the same shelf standard slot on the opposite end of case.
Important; The bracket with the ½ hole must be on the light cord side of case.
3) Repeat procedure for middle shelf brackets and the shortest top brackets. NOTE: Dierent shelf
sizes and quantities are optional from factory so shelf bracket quantity and size may vary, but
procedure is the same.
(a) Tilt shelf bracket upward and install shelf bracket hook into desired slot.
(b) Lift shelf bracket hook up behind back of shelf standard and rotate the shelf bracket
downward until desired shelf bracket tab rests on front of shelf standard.
(c) Bracket can be either flat 0 degrees 5 degree downward tilt as shown.
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4) Once all shelf brackets are installed in desired position run each shelf light cord into ½ hole in
back of shelf bracket and out the ½” hole in the front of shelf bracket. The shelf light cord length
can be adjusted by pulling out cord from cord grommet or pushing cord back into cord grommet.
5) Install front shelf supports with LED lights on to shelf brackets. All shelf supports with the lights
are the same. The LED light must be facing towards back of case. Hook shelf support end flanges
into front notch of shelf brackets on each side of case.
6) Install rear shelf supports with no lights on to shelf brackets. All shelf supports with no lights are
the same. The flange on shelf support should be facing towards back of case. Hook shelf support
end flanges into rear notch of shelf brackets on each side of case
7) Push shelf light cords into end of LED light. NOTE: Do not plug cord in backwards. There are (2)
humps on end of cord that must align with humps in end of LED light. Plugging in the cord upside
down will Damage LED light strip.
8) Manage desired cord lengths by pulling out cord from cord grommet or pushing cord back into
cord grommet.
NOTE: Cords always remain in case they are not removable.
(a)
(b)
(c)
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Special Length Shelf Installation
If the top shelf has long brackets and needs to be placed in top shelf standard notch position the
shelf bracket may hit top panel or divider panel when trying to install it. If top slot is required install
bracket as follows:
1) Remove the shelving from cases.
2) Loosen bottom thumb screw (do not remove)
3) Remove top thumb screw
4) Rotate the shelf standard towards center of case until the shelf bracket can be slipped into slots
of standard.
5) Once shelf bracket is in place, rotate the shelf standard back to vertical position and reinstall top
thumb screw and tighten.
6) Tighten lower thumb screw and install shelving as described in shelving installation.
LED Light Plug Connection
NOTICE
The plug must be inserted in correct orientation into LED light. LED light will not light if
Connecting plug into LED light upside down. It may also cause LED light failure.
Look at the end of the plug and the receptacle of LED light. On one side of the LED plug there are two
bumps and on the other side there is a flat. (Similar to the letter B shape). The LED light has the same
configuration. The shapes must align correctly when inserting LED plug into the LED light.
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Glass Shelves
1) For first time installation attach (2) glass shelf retainer clips to each glass shelf in location shown
in illustration. Clean area of glass where glass shelf holder is to be located with rubbing alcohol
and let air dry before installing shelf glass holder. Remove backing from tape located on flat side
of glass shelf holder. Position the glass shelf holders in the (2) far corners of glass. Repeat for
each glass shelf.
2) Place front of glass
3) Set each glass shelf on to the shelf supports so that the glass shelf retainer clip straddles the rear
support. The top glass should be the narrowest glass and the bottom glass shelf should be the
widest.
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Horizontal Dual Zone Shelf Divider Installation
Horizontal Dual Zone option has a stationary center shelf that divides upper and lower section. This
allows the upper section to be about 15 degrees warmer then the lower section.
The center divider brackets are stationary and are mounted in case from the factory.
The 34” tall unit has a shelf above and below the center divider and the 26” tall unit only has a shelf
below the center divider. Install these shelves as outlined in the shelving installation section of this
manual.
Install both shelf supports by hooking the shelf support into the notches on the center divider shelf
brackets. The shelf support with light should be on the front with light facing into case.
The center divider shelf can be installed through the front of case by opening the front glass or
through the back of case by removing both doors. Place it across the shelf supports and push
towards the doors until it hits the stops located on the back of the shelf brackets.
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K) FRONT AND REAR DOORS REMOVAL
ITR, ITD, ITDSS, AND ITDSSF Models
(Front Doors ITDSS Only)
UPPER TRACK
LOWER TRACK
1) Start with the outer door and lift the door upward until the bottom edge of door clears the
lower track and then swing the bottom of the door outward and down out of upper track.
2) After the outer door is removed repeat the procedure for the inner door.
3) Reverse this procedure for door reinstallation. Rear doors are not interchangeable.
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ITRSS Models
1) Start with the outer outside door and lift the door upward until the bottom edge of door clears the
lower track and then swing the bottom of the door outward and down out of upper track.
2) Remove the outer inside door using the same procedure.
3) The inner door set can then be removed using the same procedure starting with the inner outside
door followed by the inner inside door.
4) Reverse this procedure for door reinstallation starting with the inner inside door followed by the
inner outside door. Check that the doors slide freely.
5) Replace the outside inner door and the outside outer door. Be sure to slide the inner door catch
into the inner door catch slot for each door.
Note: None of the doors are interchangeable and they must be replaced in the same location that
they were removed from.
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L) SECURITY NIGHT COVER (OPTION)
Removal:
1) Unlock the lock handles and turn handles to the vertical position to disengage from lock handle
catches.
2) Grasp the front grab handles and lift the cover straight up and out of the case opening.
Installation:
1) Turn the lock handle so the latch handle is vertical to the top of the case.
2) Holding the grab handles place the bottom flange of the security night cover inside the “U”
retainer clips located on each side of case opening behind the front clear deflector. There also
may be a “U” retainer clip in the center of the case that must also engage the security night cover
flange.
3) Set the top flange of the security cover down against the top glass handle.
4) Turn the lock handles so they engage the lock handle catches and use the key to lock them in
place.
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M) OPERATING INSTRUCTIONS
Control Description
NOTICE
This refrigerated display case is designed to operate in a maximum environment of
80°F and 55% relative humidity. Exceeding these limits will cause poor case
performance and sweating of glass panels.
Power Switch (Refrigerated Models Only)
The unit has a power switch that turns o power to most of the unit. This does NOT include the
condensate evaporator and base fan. To complete disconnect power, unplug and/or switch o
breaker.
Light Switch (All Models)
The unit has a light switch that turns on and o the interior lights of unit.
Electronic Temperature Control (Refrigerated Models Only)
The temperature control allows the user to adjust the temperature of the display merchandiser to
their needs. When not in adjustment mode the read out shows relative interior case temperature.
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Button Overview
Press and hold this button for 3 seconds to turn system on (if o) or o (if on).
Also used to adjust set point when in set point adjust mode
Press to enter set point adjust mode, confirm set point changes, and mute alarms.
Press and hold this button for 3 seconds to initiate a manual defrost (and cancel
defrost if initiated), also adjusts set point down when in set point adjust mode
Powering on control
To turn refrigeration control power on, press and hold for approx. five seconds. The display will
read “On” while the button is depressed. When the control powers on, the display will read the
relative current case temperature (on initial startup it will show room temperature). The compressor
run indicator will illuminate on the display, meaning that the compressor is running. (Note: the
control may already be in the on mode when shipped from factory).
To turn refrigeration control power to o, press and hold for approx. five seconds. The display will
read “O” while the button is depressed. When the control powers o the display will flash back and
forth between the relative current case temperature and “O”. The compressor run indicator will
be o on the display. When refrigeration control is in the o-mode cabinet lights and evaporator fans
will still operate, but the compressor will not turn on causing the case to gradually reach room
temperature.
(NOTE: Cases supplied with optional fan control unit will turn on and o both the compressor and the
evaporator fans when control is turned on and o).
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Adjusting the set point
The set point is what determines how cold the display case will hold food and beverage. To adjust the
set point press and hold the button approx. 5 seconds until the display begins to flash a
number. Then press the button to scroll number up (colder) or press the button to scroll
number lower (warmer). There are nine (9) available set points numbers, the higher the number of the
set point, the colder the display case will run, with setting “9” being the coldest and setting “1” being
the warmest. Once you have chosen your desired setting press the button again to confirm your
choice.
Entering manual defrost mode
In order to initiate a manual defrost, press and hold the button approx. 5 seconds. The control
will read “dEF” while the button is being held. The defrost is initiated when the defrost mode indicator
illuminates on the display. The control display will then return to reading the case temperature.
When the defrost mode indicator turns o, the defrost is complete and the compressor will turn
back on illuminating the compressor run indicator .
Error codes
It is possible for error codes to be displayed on the control screen. In the event of a malfunction an
alarm will sound and the alarm indicator will be displayed on the display. An error code or codes
will flash intermittently on the display. If there are multiple codes, the display will continuously cycle
through them. The following photo shows error code “E0” as an example.
Mute: You may mute the alarm by pressing and releasing the wrench button. The red ringing bell and
all error codes will still be displayed. When the fault is remedied, the control will return to normal
operation and will automatically clear the codes from the display.
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Error codes may be encountered if either the controller or the display case is malfunctioning. The
following is a list of error codes that may be encountered.
Table 1 - Error Codes and Resolutions
Code Description Cause Resolution
E0 Temperature probe error Probe signal is
interrupted or
short-circuited
1.Check to ensure probe wires and quick
disconnect are secure in control.
2.Check probe resistance to table below.
If 0 resistance is present, check wiring
insulation. If infinite resistance is present,
check for breaks in wiring (meter will
likely read overload or very high in the
mega-ohm range).
3.Ensure that probes are wired per the
wiring diagram provided.
4.Replace probe if other remedies fail, or
if probe resistance deviates from “Error!
Reference source not found.” Error!
Reference source not found.
E1 Defrost probe error See E0
EE Unit parameter reading
error
Operating
conditions
1.Remedy abnormal operating
conditions. The control is rated to operate
in a range of 14 to 122°F (-10 to 50°C) and
less than 90%RH non-condensing.
2.Replace control if problem persists.
EF Operating parameter
reading error
See EE
Table 2 - Temperature Probe Common Resistance Chart
Probe Temp Maximum Resistance
[Ω]
Normal Resistance [Ω] Minimum Resistance
[Ω]
32°F(0°C) 27.83 27.28 26.74
77°F(25°C) 10.1 10 9.9
212°F(100°C) 1 0.97 0.94
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ELECTRONIC CONTROL OPERATION (Refrigerated Models Only)
This unit is equipped with an electronic temperature control. The control parameters are set at the
factory and cannot be manually changed in the field. The preset control parameters are listed on the
chart in the Settings Chart below.
Operation
The control uses two sensors, one located in the air stream and one located on the evaporator coil.
The sensor located in the air stream is referred to as the temperature control sensor. The sensor
located on the evaporator coil is referred to as the defrost probe.
The temperature control sensor is located on the plastic tub behind the evaporator coil to the left in
the cold air stream. The sensor location is critical for proper operation on the unit. Do not move or
relocate this sensor.
The coil sensor is strapped to the evaporator coil. This sensor location is critical for proper operation
of the unit. Do not move or relocate this sensor.
The temperature control is set to cut in at 39°F (3.9°C). The Temp control cuts out at 26°F (-3.3°C) at
the coldest setting “9” and 36°F (2.2°C) at the warmest setting “1”.
Defrost Cycle
The control is programmed to initiate defrost via two dierent methods. There are 3 programmed
defrost cycles in the case which will initiate a defrost cycle every 8 hours. The unit does not have a
time clock so the defrost cycles cannot be set for any specific time of day.
The unit also has an ‘On demand’ defrost feature that will initiate a defrost when the temperature
dierential between the evaporator temperature and the air temperature is more than 20°F (11.1°C)
for 5 minutes after 30 minutes into the refrigeration cycle (e.g. if the air stream probe measures
42°F/5.6°C or greater and the defrost probe measures 20°F/-6.7°C or lower for five minutes). Once
initiated the defrost cycle will terminate when evaporator coil sensor reaches 43°F (6.1°C).
If a manual defrost is required, one can be initiated by pressing and holding the down arrow for three
(3) seconds. This is typically unnecessary and should only be performed if special circumstances
require it.
Initial Startup
After all the checks outlined in the installation section of this manual have been made, the case is
ready to be put into service. Turn on the Power at the breaker box and flip the Power Switch and Light
Switch on unit to the on position. Also ensure that the control is powered on as described above.
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Refrigerated Models
At start up from a warm unit, it is recommended that the temperature control is set to a mid-setting,
such as 5. After the unit has gone through several cycles, adjust the control to a warmer or a colder
setting if necessary to maintain desired product temperature. Allow refrigerated models to run for at
least two hours before placing pre-chilled product into display area.
Placing Product into Case
After completing shelving installation as outlined in “Shelving Installation and Removal” section of
this manual you may begin placing product into the display case.
Do not exceed 100 pounds of weight per shelf. Heavy product should be distributed evenly
across the entire shelving area.
Determine desired shelving location and angle before placing product in case. Product must
be removed to readjust shelf location and angle.
Refrigerated Models
Do not overhang the front shelves with product. Product may overhang rear of shelf, but allow
a minimum of 1-1/2” between product and rear door. Improper clearance in front and rear of
shelf will block the refrigerated airflow and could cause product loss.
Do not block the slots along the front or rear of the case display pan. Covering these slots will
block the refrigerated airflow and could cause product loss.
The display pan is removable for cleaning and can become dislodged in shipment. To ensure
proper airflow and performance of the case, make sure that the display pan is pushed
completely down into evaporation tub. Check that the pan is installed properly before placing
product the display pans.
Allow a minimum of 2” between the top of product and bottom of shelf.
CASE SHOULD BE STOCKED WITH PRE-CHILLED PRODUCT ONLY.
NOTICE
This refrigerated display case is designed to operate in a maximum environment of
80°F and 55% relative humidity. Exceeding these limits will cause poor case
performance and sweating of glass panels.
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N) MAINTENANCE
Important: Read Section REFRIGERATION WARNING INSTALLATION-REPAIR-
DECOMMISSIONING” of this manual starting on page 9.
All refrigeration and electrical work shall be performed by certified technicians.
Cleaning Condenser Coil (All Self-Contained Refrigerated Models)
NOTICE
Condenser coil must be cleaned a minimum of twice per month to ensure proper
refrigeration performance and prevent compressor failure. In some environments, it
may be necessary to clean more frequently. FAILURE TO CLEAN CONDENSER COIL
WILL VOID COMPRESSOR WARRANTY.
FLOOR ITR MODEL
VACUUM FRONT
SURFACE OF
CONDENSER COIL
FRONT PANEL
VACUUM FRONT
SURFACE OF
CONDENSER COIL
BACK PANEL
COUNTER ITR MODEL
VACUUM FRONT
SURFACE OF
CONDENSER COIL
FRONT PANEL
VACUUM FRONT
SURFACE OF
CONDENSER COIL
BACK PANELS
The condenser can be cleaned from either the front or the back of case depending on which is more
accessible.
1) Disconnect power to the unit at the breaker.
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2) Remove the back or front panels located on the base or condenser compartment of unit. See
COMPARTMENT PANEL REMOVAL section of this manual.
3) Carefully vacuum the front surface of condenser coil. Take care not to bend coil fins with vacuum
cleaner nozzle.
4) Reinstall all panel and retaining screws and reconnect power.
Top LED Light Replacement
1) Turn power switch and light switch to o position.
2) Unplug 24v DC power wire from end of existing LED light strip.
3) Snap existing LED strip out of retaining clips.
4) Snap the new LED light strip into retainer clips
5) Reattach the 24v DC power wire into end of the new LED light strip. NOTE: Do not plug cord in
backwards. There are (2) humps on end of cord that must align with humps in end of LED light.
Plugging in the cord upside down will Damage LED light strip.
6) Turn power switch and light switch to on position.
Shelf LED Light Replacement
1) Turn power switch and light switch to o position.
2) Remove Shelf from display case.
3) Unplug 24v DC power wire from end of existing LED light strip.
4) Remove the shelf support with light from case.
5) Use a putty knife between the LED and the shelf support to cut the double-sided adhesive holding
LED light strip to case. Clean as much adhesive o of shelf support as possible.
6) Attach new LED light strip to shelf support using double sided adhesive.
7) Reinstall shelf support and shelf into case.
8) Reattach the 24v DC power wire into end of the new LED light strip. NOTE: Do not plug cord in
backwards. There are (2) humps on end of cord that must align with humps in end of LED light.
Plugging in the cord upside down will Damage LED light strip.
9) Turn power switch and light switch to on position.
E3788-20 Rev C 02/24/2026
69
O) CLEANING INSTRUCTIONS
Daily Cleaning
The case should be cleaned thoroughly, as described in the weekly cleaning section, before it is used
for the first time.
NOTICE
Avoid splashing or soaking any electrical components with water to prevent electrical
damage to the case.
Shut o lights and power switches, unplug power cord and/or disconnect at the
breaker. Remove all product from case. Allow suicient time for the unit to reach room
temperature before proceeding with cleaning.
Remove all product from case before proceeding with cleaning procedure.
Acrylic front air deflector, plastic inner doors, and lift up doors require special washing
procedures to prevent hazing and yellowing of material.
This case is not designed to be cleaned by flushing.
ITR, ITD, ITDSS and ITDSSF Models
Note: For major spills or foreign material buildup use complete weekly cleaning instructions.
Note: Detergents are not recommended and do not use abrasive cleaners or pads to prevent
scratching of surfaces.
1) Clean all foreign materials from the door opening.
2) Wipe complete interior areas of case using a damp cloth.
3) To allow easier access to clean interior tilt the front glass forward. Tilt the front glass out by
grabbing the top edge of glass with fingertips and pulling it away from magnetic strips on case. Tilt
glass until it stops at about 30 degrees angle.
(a) IMPORTANT: Hold on to the glass until it stops and do not let it fall freely. Allowing glass to fall
may damage glass or hinge.
4) The glass can then be cleaned with common window cleaners.
(a) IMPORTANT: Do not allow glass cleaner to contact any of the Acrylic front deflector, front lift-
up doors, and plastic inner doors.
5) The remaining exterior surface should be wiped down using any ammoniated cleaners or soapy
warm water.
E3788-20 Rev C 02/24/2026
70
IMPORTANT
Cleaning the Acrylic-plastic security night cover requires special care to prevent hazing
of material. Lightly dust (not wipe) the surface with clean, soft cloth. Then the surface
can be wiped carefully with a soft, wet cloth or chamois. The cloth or chamois must be
kept free of grit by frequently rinsing in clean water.
Grease and oil can be removed with mild, non-abrasive soap and water.
Do not use window cleaners or kitchen scouring compounds.
DO NOT use solvents such as Acetone, Benzene, Carbon Tetrachloride, and Lacquer
Thinners.
Food-safe spray wax can be applied and wiped with a clean, soft cloth. The wax tends
to fill in and hide small scratches.
Weekly Cleaning ITR, ITD, ITDSS AND ITDSSF Models
This procedure is recommended on a weekly basis. It may need to be performed more often if
necessary to maintain a clean, sanitary case. The case should be cleaned to this procedure before
using it the first time.
NOTICE
Avoid splashing or soaking any electrical components with water to prevent electrical
damage to the case.
Shut o lights and power switches, unplug power cord and/or disconnect at the
breaker. Remove all product from case. Allow suicient time for the unit to reach room
temperature before proceeding with cleaning.
Remove all product from case before proceeding with cleaning procedure.
Acrylic front air deflector, plastic inner doors, and lift up doors require special washing
procedures to prevent hazing and yellowing of material.
This case is not designed to be cleaned by flushing.
Note: For major spills or foreign material buildup perform the weekly cleaning instructions.
E3788-20 Rev C 02/24/2026
71
ITR & ITD Models
REAR DOOR
INNER
REAR DOOR
OUTER
GLASS END
PANEL
SHELVING
SHELF
BRACKET
GLASS END
PANEL
SHELF
SUPPORTS
SHELF
STANDARD
EVAP FAN SHROUD
ASSEMBLY
DISPLAY DECK
1) Disconnect power to display case: Turn o light and power switches then unplug and/or
disconnect at the breaker.
2) Remove the rear doors as described in rear door removal section
3) Remove all interior shelving as described in the shelving installation and removal section of this
manual.
4) Remove both shelf standards from interior of case by removing thumb screws located at top and
bottom of shelf standard.
5) Remove end glass as described in end panel removal section of this manual.
6) Refrigerated Models Only
(a) Lift the Display Deck(s) up and out of evaporator tub and remove from case.
(b) Remove the evaporator fan shroud by removing the thumbscrews along the backside of
evaporator fan shroud and the (2) thumb screws on each side of evaporator coil. Unplug
fan(s) from wire harness and remove evaporator fan shroud with fan attached from case.
7) Clean the entire interior of the case using warm soapy water. Wipe o all soapy water with a
damp cloth and allow to dry.
8) Clean all shelves, shelf support bars, shelf standards, shelf brackets, and display deck using
warm soapy water and a brush. Rinse thoroughly and allow to dry.
E3788-20 Rev C 02/24/2026
72
9) Clean behind front glass hinge using warm soapy water and sweeping debris to each end and
Clean all foreign material from inner and outer rear door tracks using warm soapy water and a brush.
Apply a light film of lubricant such as PAM to make the doors operate smoother.
Clean both sides of the doors, end glass and front glass using any common window cleaner.
Important
Do not allow glass cleaner to contact any of the Acrylic front deflector, front lift-up
doors, and plastic inner doors. The front glass can be tilted forward to allow easier
access to clean interior. Tilt the front glass out by grabbing the top edge of glass with
finger tips and pulling it away from magnetic strips on case. Tilt glass until it stops at
about 30 degrees angle.
Hold on to the glass until it stops and do not let it free fall or damage to glass or hinge
may occur. Close the glass by pushing glass back up against magnetic gasket in
closed position.
IMPORTANT
Cleaning the Acrylic-plastic security night cover requires special care to prevent
hazing of material. Lightly dust (not wipe) the surface with clean, soft cloth. Then the
surface can be wiped carefully with a soft, wet cloth or chamois. The cloth or chamois
must be kept free of grit by frequently rinsing in clean water.
Grease and oil can be removed with mild, non-abrasive soap and water.
Do not use window cleaners or kitchen scouring compounds.
DO NOT use solvents such as Acetone, Benzene, Carbon Tetrachloride, and Lacquer
Thinners.
Food-safe spray wax can be applied and wiped with a clean, soft cloth. The wax tends
to fill in and hide small scratches.
10) Reassemble the case in reverse order.
E3788-20 Rev C 02/24/2026
73
ITRSS Models
REAR OUTSIDE
DOOR INNER
REAR INSIDE
DOORS
SHELVING
SHELF
BRACKET
SHELF
SUPPORTS
SHELF
STANDARD
EVAP FAN SHROUD
ASSEMBLY
DISPLAY DECK
END PANEL
FRONT DEFLECTOR
1) Disconnect power to display case: Turn o light and power switches then unplug and/or
disconnect at the breaker.
2) Remove the outer and inner rear doors as described in rear door removal section
3) Remove the front deflector by lifting it up and out of retainer channel.
4) Remove all interior shelving as described in the shelving installation and removal section of this
manual.
5) Remove both shelf standards from interior of case by removing thumb screws located at top and
bottom of shelf standard.
6) Remove end panels as described in end panel removal section of this manual.
7) Lift the Display Deck(s) up and out of evaporator tub and remove from case.
8) Remove the evaporator fan shroud by removing the thumbscrews along the backside of
evaporator fan shroud and the (2) thumb screws on each side of evaporator coil. Unplug fan(s)
from wire harness and remove evaporator fan shroud with fan attached from case.
E3788-20 Rev C 02/24/2026
74
9) Clean the entire interior of the case using warm soapy water. Wipe o all soapy water with a
damp cloth and allow to dry.
10) Clean all shelves, shelf support bars, shelf standards, shelf brackets, and display deck using
warm soapy water and a brush. Rinse thoroughly and allow to dry.
11) Clean behind front glass hinge using warm soapy water and sweeping debris to each end and
12) Clean all foreign material from inner and outer rear door tracks using warm soapy water and a
brush. Apply a light film of lubricant such as PAM to make the doors operate smoother.
13) Clean both sides of the doors, end glass and front glass using any common window cleaner.
Important
Do not allow glass cleaner to contact any of the Acrylic front deflector, front lift-up
doors, and plastic inner doors. The front glass can be tilted forward to allow easier
access to clean interior. Tilt the front glass out by grabbing the top edge of glass with
finger tips and pulling it away from magnetic strips on case. Tilt glass until it stops at
about 30 degrees angle.
Hold on to the glass until it stops and do not let it free fall or damage to glass or hinge
may occur. Close the glass by pushing glass back up against magnetic gasket in closed
position.
IMPORTANT
Cleaning the Acrylic-plastic security night cover requires special care to prevent hazing
of material. Lightly dust (not wipe) the surface with clean, soft cloth. Then the surface
can be wiped carefully with a soft, wet cloth or chamois. The cloth or chamois must be
kept free of grit by frequently rinsing in clean water.
Grease and oil can be removed with mild, non-abrasive soap and water.
Do not use window cleaners or kitchen scouring compounds.
DO NOT use solvents such as Acetone, Benzene, Carbon Tetrachloride, and Lacquer
Thinners.
Food-safe spray wax can be applied and wiped with a clean, soft cloth. The wax tends
to fill in and hide small scratches.
14) Reassemble the case in reverse order.
Weekly Exterior Cleaning All
1) Clean the front, end glass and rear doors using any common window cleaner.
(a) IMPORTANT: Do not allow glass cleaner to contact any of the Acrylic front deflector, front lift-
up doors, and plastic inner doors.
2) The exterior surfaces should be wiped down using any ammoniated cleansers or warm soapy
water.
3) Clean the Acrylic plastic front deflector carefully.
E3788-20 Rev C 02/24/2026
75
IMPORTANT
Cleaning the Acrylic-plastic security night cover requires special care to prevent hazing
of material. Lightly dust (not wipe) the surface with clean, soft cloth. Then the surface
can be wiped carefully with a soft, wet cloth or chamois. The cloth or chamois must be
kept free of grit by frequently rinsing in clean water.
Grease and oil can be removed with mild, non-abrasive soap and water.
Do not use window cleaners or kitchen scouring compounds.
DO NOT use solvents such as Acetone, Benzene, Carbon Tetrachloride, and Lacquer
Thinners.
Food-safe spray wax can be applied and wiped with a clean, soft cloth. The wax tends
to fill in and hide small scratches.
E3788-20 Rev C 02/24/2026
76
P) SERVICE
CAUTION
RISK OF ELECTRIC SHOCK
DISCONNECT POWER BEFORE
SERVICING UNIT
Before any service work is
performed on the case, make sure
all power is disconnected to the
case.
Important: Read Section REFRIGERATION WARNING INSTALLATION-REPAIR-
DECOMMISSIONING” of this manual starting on page 9.
All refrigeration and electrical work shall be performed by certified technicians.
To find a service company in your area, please visit our website at www.federalindustries.com.
There you can also find self-service tools to help you get the answers you need faster!
For Warranty Service Requests & ALL Technical Support please contact:
- Phone: (800) 356-4206 and choose the Tech Support/Warranty Option
- Email: Service@federalind.com
For Warranty Compressors please contact the Parts Department:
- Phone: (800) 356-4206 and choose the Warranty Parts Option
- Email: Parts@Federalind.com
Federal Industries has partnered with Parts Town for ALL Non-Warranty Part Identification, Pricing,
Lead Times, Orders & Freight Quotes. Please contact Parts Town directly if you need parts:
- Website: PartsTown.com
- Email: CustomerService@PartsTown.com
- Phone: 833-809-8188
Special Service Situations
There are rare occasions when the refrigerant charge must be evacuated from a case in order to
perform service work. In those situations, Federal Industries recommends that the refrigerant charge
E3788-20 Rev C 02/24/2026
77
be evacuated into a recovery system to prevent the possibility of hydrofluorocarbons (HFC’s) from
being released into the atmosphere.
If moisture or liquid is observed around or under a Federal Industries case, an immediate
investigation should be made by qualified personnel to determine the source of the moisture or
liquid. The investigation made should determine if the case is malfunctioning or if there is a simple
housekeeping problem.
CAUTION
Moisture or liquid around or under a case is a potential slip/fall hazard for persons
walking by or working in the general area of the case. Any case malfunction or
housekeeping problem that creates a slip/fall hazard around or under a case should
be corrected immediately.
E3788-20 Rev C 02/24/2026
78
Pre-Service Checklist
You may avoid the cost and inconvenience of an unnecessary service call by first reviewing this
checklist of frequently encountered situations that can cause unsatisfactory case performance.
SITUATION CHECKLIST NOTES (Note any findings
and share with technician
when calling for service)
Case Does
Not Operate
☐ Check for disconnected power supply.
☐ Check for tripped breaker or blown fuse.
☐ Check that power switch is on.
Lights Do Not
Operate
☐ Check that light switch is on.
☐ Be sure light cord is properly seated into LED
light strip.
☐ Is the light cord plugged in to light strip upside
down.
Case
Temperature
Too Warm
☐ Check that the cold air inlet and outlet slots are
not blocked.
☐ Be sure that the rear doors are closed and
tightly sealed.
☐ Check for a blocked or dirty condenser coil fins.
☐ Check cold airflow. Lack of adequate cold
airflow could be a defective evaporator fan or
blocked evaporator coil.
☐ Check that paper or foreign material is not
blocking evaporator.
☐ If the evaporator coil is blocked due to
excessive frost, initiate a manual defrost on the
electronic temperature control as described in
the Using Electronic Temperature Control
section of this manual.
☐ Is the case installed properly to allow adequate
air flow to and from condenser?
☐ Check that the electronic control settings are
correct.
☐ Check environmental conditions. This case is
designed to operate in no more than 80°/ 55%
percent humidity.
CAUTION
Electric Shock Hazard. Before servicing case turn o power at the main breaker of
fuse box.
E3788-20 Rev C 02/24/2026
79
Q) SALE & DISPOSAL
Important: Read Section REFRIGERATION WARNING INSTALLATION-REPAIR-
DECOMMISSIONING of this manual starting on page 9.
All refrigeration and electrical work shall be performed by certified technicians.
Owner Responsibility
If you sell or give away your Federal Industries case you must make sure that all safety labels and the
Installation-Service Manual are included with it. If you need replacement labels or manuals, Federal
Industries will provide them free of charge. Contact the customer service department at Federal
Industries at (800) 356-4206.
The customer service department at Federal Industries should be contacted at the time of sale or
disposal of your case so records may be kept of its new location.
If you sell or give away your Federal Industries case and you evacuate the refrigerant charge before
shipment. Federal Industries recommends that the charge be evacuated into a recovery system to
prevent the possibility of HFC’s from being released into the atmosphere.
E3788-20 Rev C 02/24/2026
80
R) MAIN WIRING DIAGRAMS
IMPORTANT
Date on diagrams shown here are the eective dates. Units built on or after the date
shown are wired per the diagram. Units built prior to the date shown may dier. Refer
to wiring diagram located inside the unit for most accurate diagram for your unit.
Non-Refrigerated
COLOR CODE
B = BLUE
W = WHITE
BLK = BLACK
120V/1PH/60HZ
ITD DRY NON REFRIGERATED
MODELS
91-20579 4/26/16
SHELF
LIGHT
W
24V POWER
SUPPLY
RIB
LIGHT QUANTITY
WILL VARY BY MODEL
LIGHT
SWITCH
RIB
RIB
RIB
TOP
LIGHT
RIB
RIB
RIB
RIB
+
B
R
B
R
-
SHELF
LIGHT
SHELF
LIGHT
+
-
+
-
+
-
BLK
BLK
G = GREN
G
W
BLK
G
BLK
DARK LINES REPRESENT
CONDUCTOR CORD
TOP COVER
E3788-20 Rev C 02/24/2026
81
Fan Control Option, Refrigerated Self Contained (not available ITRSS models)
COLOR CODE
B = BLUE
R = RED
W = WHITE
BLK = BLACK
CAREL CONTROL
W/EVAP FAN ON-OFF
120V/1PH/60HZ
DARK LINES REPRESENT
CONDUCTOR CORD
ITR SELF CONTAINED
MODELS W/FAN OFF
CONTROL
91-20568-1 12/10/20
Y
W
W
4
3 9
6 7 10
8
R
TEMP PROBE
DEFROST
PROBE
SHELF
LIGHT
W
24V POWER
SUPPLY
(2) FANS 5' ONLY
RIB
LIGHT QUANTITY
WILL VARY BY MODEL
POWER
SWITCH
LIGHT
SWITCH
RIB
RIB
RIB
TOP
LIGHT
IN COMP.
FOR DETAILS.
SEE DIAGRAM
CONDENSING
UNIT
CONDENSATE PUMP
OR EVAPORATOR
G/Y
B
BRW
RIB
RIB
RIB
RIB
+
B
R
B
R
BLK/RIB
BLK/RIB
BLK
BLK
M
PLUG
BLK/RIB
BLK
-
SHELF
LIGHT
SHELF
LIGHT
+
-
+
-
+
-
BLK
BLK
BLK
W
BLK
G
Y
BLK/RIB
BLK/C
BLK
W
R
BLK
BLK
W
Y
BLK/RIB
BLK
BLK/C
BLK/C
BLK/C
BLK
Y
W
G
Y = YELLOW
G/Y = GREEN/YELLOW
G
W
BLK
G
BLK
TOP COVER
BLK/RIB
BLK/RIB
BLK
M
BLK/RIB
BLK
BLK
BLK
PLUG
PLUG
G = GREEN
CAP WITH
WIRE NUT
(2)
BLK
W
5
B
E3788-20 Rev C 02/24/2026
82
All Refrigerated Self Contained
E3788-20 Rev C 02/24/2026
83
All Refrigerated Remote
E3788-20 Rev C 02/24/2026
84
S) REPLACEMENT PARTS
2 REF. E3788 EXCEL FILE
Electrical Components
MODELS
LIGHT
SWITCH
POWER
SWITCH
LIGHT
POWER
SUPPLY
LIGHT 24V
LED STRIP
SHELF LIGHT
CORD
SC MAIN
WIRING
DIAGRAM
REMOTE
MAIN WIRING
DIAGRAM
DRY
MAIN
WIRING
DIAGRAM
EEV CONTROL
(SS & REMOTE
ONLY)
EEV TEMP
CONTROL
(SS ONLY)
EEV
PRESSURE
(SS ONLY)
ITD36
ITD48,ITD60
41-11066 41-11066 39-20555 42-20870-
29C35
43-20475
91-20579
ITD48
41-11066 41-11066 39-20555 42-20870-
40C35
43-20475
91-20579
ITD60
41-11066 41-11066 39-20555 42-20870-
51C35
43-20475
91-20579
ITDSS36
41-11066 41-11066 39-20555 42-20870-
29C35
43-20475
91-20579
ITDSS48
41-11066 41-11066 39-20555 42-20870-
40C35
43-20475
91-20579
ITDSS60
41-11066 41-11066 39-20555 42-20870-
51C35
43-20475
91-20579
ITDSS36F
41-11066 41-11066 39-20555 42-20870-
29C35
43-20475
ITDSS48F
41-11066 41-11066 39-20555 42-20870-
40C35
43-20475
ITDSS60F
41-11066 41-11066 39-20555 42-20870-
51C35
43-20475
ITR36
&ITRSS36
41-11066 41-11066 39-20555 42-20870-
29C35
43-20475 91-20568 N/A
32-21223 32-21224 32-21225
ITR48
&ITRSS48
41-11066 41-11066 39-20555 42-20870-
40C35
43-20475 91-20568 91-20567-2
32-21223 32-21224 32-21225
ITR60
41-11066 41-11066 39-20555 42-20870-
51C35
43-20475 91-20568 91-20567-2
32-21223 32-21224 32-21225
ITRSS60
41-11066 41-18186 39-20555 42-20870-
51C35
43-20475 E3841 91-20567-2
32-21223 32-21224 32-21225
E3788-20 Rev C 02/24/2026
85
Refrigeration Components
MODELS
CONDENSING
UNIT (SC)
After 1/22
EVAPORATOR
COIL
EXPANSION
VALVE
EVAPORATOR
FAN MOTOR
FILTER DRIER
ELECTRONIC
CONTROL TEMP. PROBE
CONDENSATE
PAN ASSY
ELECTRONIC
EXPANSION
VALVE
OPT. EVAP
FAN ON/OFF
ELECTRONIC
CONTROL
OPT.
CONDO
PUMP
120V
ITR36
30-21754 33-17315-21 32-21751 41-21237-11 32-12626 32-19864-14 32-19094 40-20420 32-21228 32-21382-14 47-15686
ITR48
30-21754 33-17315-22 32-21751 41-21237-16 32-12626 32-19864-14 32-19094 40-20420 32-21228 32-21382-14 47-15686
ITR60
30-21754 33-17315-23 32-21751 41-21237-12 32-12626 32-19864-14 32-19094 40-20420 32-21228 32-21382-14 47-15686
ITRSS36
30-21754 33-17315-21 32-21751 41-21237-11 32-12626 32-19864-15 32-19094 SA5202-1 32-21228 - 47-15686
ITRSS48
30-21754 33-17315-22 32-21751 41-21237-16 32-12626 32-19864-15 32-19094 SA5202-1 32-21228 - 47-15686
ITRSS60
30-21754 33-17315-23 32-21750 41-21237-12 32-12626 32-19865-15 32-19094 SA5202-2 32-21228 - 47-15686
REMOTE
MODELS
EVAPORATOR
COIL
EVAPORATOR
FAN MOTOR
ELECTRONIC
CONTROL
ELECTRONIC
EXPANSION
VALVE TEMP. PROBE
CONDO PUMP
120V
REMOTE
BASE FAN
REFRIG
SOLENOID
OPT.
CONDENSATE
PAN ASSY
LEAK
DETECTOR
ITR48R
33-17315-32 41-21237-16 32-19864-14 32-21225 32-19094 47-15686 41-21237-20 32-21915-3 &
32-21915-C24
40-20420 32-21917
ITR60R
33-17315-33 41-21237-12 32-19864-14 32-21225 32-19094 47-15686 41-21237-20 40-20420 32-21917
Glass Components
MODELS FRONT
GLASS /
PLASTIC ON
SS
TOP GLASS END GLASS
CLEAR. L.H. SS
TRIM.
END GLASS
CLEAR. R.H. SS
TRIM
END GLASS
REFL. L.H. SS
TRIM
END GLASS
REFL. R.H. SS
TRIM
FRONT GLASS
MAGNET TOP
FRONT GLASS
MAGNET SIDE
ITD3626
51-20598-4 51-20599-4 SA5830-1L SA5830-1R SA5830-3L SA5830-3R 64-20476-1 64-20476-5
ITD4826
51-20598-5 51-20599-4 SA5830-1L SA5830-1R SA5830-3L SA5830-3R 64-20476-2 64-20476-5
ITD6026
51-20598-6 51-20599-4 SA5830-1L SA5830-1R SA5830-3L SA5830-3R 64-20476-3 64-20476-5
ITD3634
51-20598-1 51-20599-1 SA5830-L SA5830-R SA5830-2L SA5830-2R 64-20476-1 64-20476-4
ITD4834
51-20598-2 51-20599-2 SA5830-L SA5830-R SA5830-2L SA5830-2R 64-20476-2 64-20476-4
ITD6034
51-20598-3 51-20599-3 SA5830-L SA5830-R SA5830-2L SA5830-2R 64-20476-3 64-20476-4
ITDSS3626
51-20599-1 SA5830-1L SA5830-1R SA5830-3L SA5830-3R
ITDSS4826
51-20599-2 SA5830-1L SA5830-1R SA5830-3L SA5830-3R
ITDSS6026
51-20599-3 SA5830-1L SA5830-1R SA5830-3L SA5830-3R
ITDSS3634
51-20599-1 SA5830-L SA5830-R SA5830-2L SA5830-2R
ITDSS4834
51-20599-2 SA5830-L SA5830-R SA5830-2L SA5830-2R
E3788-20 Rev C 02/24/2026
86
MODELS
FRONT
GLASS /
PLASTIC ON
SS
TOP GLASS
END GLASS
CLEAR. L.H. SS
TRIM.
END GLASS
CLEAR. R.H. SS
TRIM
END GLASS
REFL. L.H. SS
TRIM
END GLASS
REFL. R.H. SS
TRIM
FRONT GLASS
MAGNET TOP
FRONT GLASS
MAGNET SIDE
ITDSS6034
51-20599-3 SA5830-L SA5830-R SA5830-2L SA5830-2R
ITDSS3626
15-20635-1
SA5831-1L SA5831-1R SA5831-3L SA5831-3R
ITDSS4826
15-20635-2
SA5831-1L SA5831-1R SA5831-3L SA5831-3R
ITDSS6026
15-20635-3
SA5831-1L SA5831-1R SA5831-3L SA5831-3R
ITDSS3634
15-20635-1
SA5831-L SA5831-R SA5831-2L SA5831-2R
ITDSS4834
15-20635-2
SA5831-L SA5831-R SA5831-2L SA5831-2R
ITDSS6034
15-20635-3
SA5831-L SA5831-R SA5831-2L SA5831-2R
ITR3626
50-20471-4 50-20472-1 SA5830-1L SA5830-1R SA5830-3L SA5830-3R 64-20476-1 64-20476-5
ITR4826
50-20471-5 50-20472-2 SA5830-1L SA5830-1R SA5830-3L SA5830-3R 64-20476-2 64-20476-5
ITR6026
50-20471-6 50-20472-3 SA5830-1L SA5830-1R SA5830-3L SA5830-3R 64-20476-3 64-20476-5
ITR3634
50-20471-1 50-20472-1 SA5830-L SA5830-R SA5830-2L SA5830-2R 64-20476-1 64-20476-4
ITR4834
50-20471-2 50-20472-2 SA5830-L SA5830-R SA5830-2L SA5830-2R 64-20476-2 64-20476-4
ITR6034
50-20471-3 50-20472-3 SA5830-L SA5830-R SA5830-2L SA5830-2R 64-20476-3 64-20476-4
ITRSS3626
15-20635-1
SA5831-1L SA5831-1R SA5831-3L SA5831-3R
ITRSS4826
15-20635-2
SA5831-1L SA5831-1R SA5831-3L SA5831-3R
ITRSS6026
15-20635-3
SA5831-1L SA5831-1R SA5831-3L SA5831-3R
ITRSS3634
15-20635-1
SA5831-L SA5831-R SA5831-2L SA5831-2R
ITRSS4834
15-20635-2
SA5831-L SA5831-R SA5831-2L SA5831-2R
ITRSS6034
15-20635-3
SA5831-L SA5831-R SA5831-2L SA5831-2R
Rear Doors
MODELS
DOOR LEFT
CLEAR
DOOR RIGHT
CLEAR
DOOR LEFT
REFLECTIVE
DOOR RIGHT
REFLECTIVE
MODELS
DOOR
OUTER
CLEAR
DOOR INNER
CLEAR
DOOR
OUTER
REFLECTIVE
DOOR INNER
REFLECTIVE
DOOR
IN SIDE
OUTER )L)
DOOR
IN SIDE
INNER )R)
IT 3626
53-20467-4 53-20468-4 53-20467-4A
53-20468-4A
ITRSS 3626
53-20698-4 53-20699-4 53-20698-4A
53-20699-4A
SA5759-4 SA5760-4
IT 4826
53-20467-5 53-20468-5 53-20467-5A
53-20468-5A
ITRSS 4826
53-20698-5 53-20699-5 53-20698-5A
53-20699-5A
SA5759-5 SA5760-5
IT 6026
53-20467-6 53-20468-6 53-20467-6A
53-20468-6A
ITRSS 6026
53-20698-6 53-20699-6 53-20698-6A
53-20699-6A
SA5759-6 SA5760-6
IT 3634
53-20467-1 53-20468-1 53-20467-1A 53-20468-1A
ITRSS 3634
53-20698-1 53-20699-1 53-20698-1A 53-20699-1A SA5759-1 SA5760-1
IT 4834
53-20467-2 53-20468-2 53-20467-2A
53-20468-2A
ITRSS 4834
53-20698-2 53-20699-2 53-20698-2A
53-20699-2A
SA5759-2 SA5760-2
IT 6034
53-20467-3 53-20468-3 53-20467-3A
53-20468-3A
ITRSS 6034
53-20698-3 53-20699-3 53-20698-3A
53-20699-3A
SA5759-3 SA5760-3
E3788-20 Rev C 02/24/2026
87
Shelf Components (After 05/01/2025)
MODELS
GLASS SHELF
11"
GLASS SHELF
14"
GLASS SHELF
17"
SHELF
SUPPORT
SHELF
BRACKET 9"
SHELF
BRACKET 12"
SHELF
BRACKET 15"
SHELF SUPORT
(NO LIGHT)
IT 3626
- 52-20473-2 52-20473-3 M20442-1 - 67-20621-2L/1R 67-20621-3L/1R M20379-1
IT 4826
- 52-20473-5 52-20473-6 M20442-1 - 67-20621-2L/1R 67-20621-3L/1R M20379-2
IT 6026
- 52-20473-8 52-20473-9 M20442-1 - 67-20621-2L/1R 67-20621-3L/1R M20379-3
IT 3634
52-20473-1 52-20473-2 52-20473-3 M20442 67-20621-1L/1R 67-20621-2L/1R 67-20621-3L/1R M20379-1
IT 4834
52-20473-4 52-20473-5 52-20473-6 M20442 67-20621-1L/1R 67-20621-2L/1R 67-20621-3L/1R M20379-2
IT 6034
52-20473-7 52-20473-8 52-20473-9 M20442 67-20621-1L/1R 67-20621-2L/1R 67-20621-3L/1R M20379-3
Shelf Components (All R290 & After 05/01/2025 On All Other Cases)
MODELS
GLASS SHELF
11"
GLASS SHELF
14"
GLASS SHELF
17"
SHELF
SUPPORT
SHELF BRACKET
9"
SHELF BRACKET
12"
SHELF BRACKET
15"
SHELF SUPORT
(NO LIGHT)
IT 3626
- 52-20473-2 52-20473-3 M22240-1 - 67-21865-2L/1R 67-21865-3L/1R M20379-1
IT 4826
- 52-20473-5 52-20473-6 M22240-1 - 67-21865-2L/1R 67-21865-3L/1R M20379-2
IT 6026
- 52-20473-8 52-20473-9 M22240-1 - 67-21865-2L/1R 67-21865-3L/1R M20379-3
IT 3634
52-20473-1 52-20473-2 52-20473-3 M22240 67-21865-1L/1R 67-21865-2L/1R 67-21865-3L/1R M20379-1
IT 4834
52-20473-4 52-20473-5 52-20473-6 M22240 67-21865-1L/1R 67-21865-2L/1R 67-21865-3L/1R M20379-2
IT 6034
52-20473-7 52-20473-8 52-20473-9 M22240 67-21865-1L/1R 67-21865-2L/1R 67-21865-3L/1R M20379-3
Front Doors (ITDSS Only)
MODELS
DOOR (2)
ITDSS 3626
SA5959-1
ITDSS 4826
SA5959-3
ITDSS 6026
SA5959-5
ITDSS 3634
SA5959-2
ITDSS 4834
SA5959-4
ITDSS 6034
SA5959-6
E3788-20 Rev C 02/24/2026
88
California Residents Only.
WARNING
This product can expose you to chemicals including chromium which is known to the State of California to cause cancer and birth defects or
other reproductive harm. For more information go to www.P65Warnings.ca.gov
E3788-20 Rev C 02/24/2026
89
REV CHANGE RECORD
APP’D DATE ECN#
0 RELEASED LPR 2/17/25 3930
A NEW SHELF BRACKETS & STANDARDS SES 3/3/25 3945
B UPDATED WIRING DIAGRAM 91-20568-10 LPR 4/23/25 3930
C UPDATE FOR R454C REMOTE CHANGE. CLEANED FORMATTING TAC 02/27/26 3988
