Hussmann GSVM User manual

GSVM
Medium Temperature
Self Contained
Open Vertical Merchandisers
Installation &
Operation
Manual
P/N 0545716_G
July 2018
IMPORTANT
Keep in store
for future reference!
Spanish 0545717
French 0545718
MANUAL - IO SC GSVM
®
®

P/N 0545716_G ii
IMPORTANT
KEEP IN STORE FOR FUTURE REFERENCE
Quality that sets industry standards!
12999 St. Charles Rock Road • Bridgeton, MO 63044-2483
U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900
www.hussmann.com
© 2018 Hussmann Corporation

ANSI Z535.5 DEFINITIONS .......... iv
INSTALLATION
UL Listing ......................... 1-1
Federal / State Regulation ............ 1-1
Hussmann Product Control ........... 1-1
Shipping Damage ................... 1-1
Apparent Loss Or Damage .................. 1-1
Concealed Loss Or Damage ................. 1-1
Location ........................... 1-1
Self Contained (Location) ............. 1-2
Model Description .................. 1-3
Unloading ......................... 1-3
Unloading from Trailer .................... 1-3
Exterior Loading .................... 1-3
Shipping Skid ...................... 1-3
Merchandiser Leveling ............... 1-4
Optional Legs ...................... 1-4
Serial Plate Location ................. 1-4
Refrigeration Unit Access ............. 1-4
Sealing Merchandiser to Floor ......... 1-4
Night Curtain Installation ............ 1-5
Hussmann Self-Contained Refrigeration
Equipment Start Up Check List ....... 1-7
ELECTRICAL / REFRIGERATION
Merchandiser Electrical Data .......... 2-1
Field Wiring ........................ 2-1
Electrical Connections . . . . . . . . . . . . . . . . 2-1
Power Switch ....................... 2-1
Electrical Outlet ..................... 2-1
Refrigeration (Self Contained Models) .. 2-2
Waste Outlet and Water Seal .......... 2-2
Optional Electric Condensate Pan....... 2-2
Controller Operation ................. 2-3
Controller Connections ............... 2-6
Controller LED ..................... 2-7
Controller Buttons .................. 2-8
Controller Setpoint .................. 2-9
Sensor to Control
Configuration ...................... 2-10
START UP / OPERATION
Start-Up ........................... 3-1
TEV Adjustment (GSVM-5272 only) .... 3-1
Controls and Adjustments ............ 3-2
Load Limits ........................ 3-3
Stocking ........................... 3-3
Solar Thermometer .................. 3-3
Shelf Maximum Weight Limits ......... 3-4
MAINTENANCE
Care and Cleaning ................... 4-1
Exterior Surfaces .......................... 4-1
Interior Surfaces .......................... 4-1
Do NOT Use: ....................... 4-1
Do: ............................... 4-1
Cleaning Discharge Honeycomb ....... 4-2
Cleaning Stainless Steel Surfaces ........ 4-2
Cleaning Solar Thermometer........... 4-2
Cleaning Under Display Pan .......... 4-3
Cleaning Evaporation Pan ............ 4-3
Cleaning Coils ...................... 4-4
Maintaining Fluorescent Lamps ........ 4-4
Removing Scratches from Bumper ...... 4-4
Self-Contained Refrigeration Equipment
Maintenance Check List ............. 4-5
SERVICE
Replacing Fan Motors and Blades ...... 5-1
Replacing Fluorescent Lamps ......... 5-2
LED Fixture Replacement ............ 5-2
Troubleshooting Guide ............... 5-3
Troubleshooting Light Guide .......... 5-4
GSVM Accessories .................. 5-4
TABLE OF CONTENTS iii
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. GSVM Open Vertical Merchandisers

APPENDIX
Technical Data .................... A-1
Part List .......................... A-1
Cross Sections ......................A-3
Refrigeration Data .................. A-4
Defrost Data ...................... A-4
Physical Data ...................... A-4
Electrical Data ..................... A-5
Wiring Diagram .....................A-6
GSVM-4060 .............................. A-7
GSVM-4072 ...............................A-8
GSVM-5272 ...............................A-9
WARRANTY
REVISION HISTORY
Revision G: Page 2-10 - removed wire color
Revision F: Updated Condensate Pan Information in
Section A of the manual.
Revision E
1. Page 1-4 updated controller info and replaced images
2. Page 2-3 to 2-7 updated controller info
3. Page 2-8 On case section view changed Sensor Colors
Yellow to Orange and Black to Green
replaced pictures
4. Page 3-2Remove word knob (see pdf attached)
5. Page A-1
-Remove selected components (see pdf attached) and
add the listed components on the Parts to add.xlsx file
attached
6. Page A-7 to A-9 Replace wiring diagrams
Revision D
1. 2017 DOE Compliant Page 1
2. 2-1 Add note: For USA/Canada, a HI-Humidity
Condensate Pan Kit is provided with GSVM-4060.
A separate dedicated circuit is required. 120V, 15 Amp
circuit and a NEMA 5-15R receptacle. NOTE: This
extra circuit is for the Hi-Humidity condensate pan kit
only.
3. 2-2 Updated Pan Information
4. A-2 On the Condensate Pan section: -Replace part
number 1601835 with 0538249, remove optional from
the description.
-Add to the description of these components 29254,
29253, 19s678: (Not for USA/CANADA) A-5. Update
GSVM-5272
5. AHRI Total Display Area Update
6. GSVM-4060 diagram
ORIGINAL ISSUE — NOVEMBER 2010
iv
* * * * * * * * * * * * * * * * * * * * * * * * * *
ANSI Z535.5 DEFINITIONS
• DANGER – Indicate[s] a hazardous
situation which, if not avoided, will
result in death or serious injury.
• WARNING –Indicate[s] a hazardous
situation which, if not avoided, could
result in death or serious injury.
• CAUTION –Indicate[s] a hazardous
situation which, if not avoided, could
result in minor or moderate injury.
• NOTICE – Not related to personal injury –
Indicates[s] situations, which if not avoided,
could result in damage to equipment.
P/N 0545716_G U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com

P/N 0545716_G 1-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. GSVM Open Vertical Merchandisers
UL LISTING
These merchandisers are manufactured to meet
ANSI/ UL 471 standard requirements for safe-
ty. Proper installation is required to maintain
the listing.
FEDERAL / STATE REGULATION
These merchandisers at the time they are man-
ufactured, meet all federal and state/ provincial
regulations. Proper installation is required to
ensure these standards are maintained. Near
the serial plate, each merchandiser carries a
label identifying the environment for which the
merchandiser was designed for use. A Type II
fan speed control kit is required for each mer-
chandiser to operate at Type II conditions.
ANSI/NSF-7 Type I – Display Refrigerator /
Freezer
Intended for 75°F (24°C) / 55%RH Ambient Application
ANSI/NSF-7 Type II – Display Refrigerator / Freezer
Intended for 80°F / 55%RH Ambient Application
ANSI/NSF-7 – Display Refrigerator
Intended for Bulk Produce
HUSSMANN PRODUCT CONTROL
The serial number and shipping date of all
equipment is recorded in Hussmann’s files
for warranty and replacement part purposes.
All correspondence pertaining to warranty or
parts ordering must include the serial number
of each piece of equipment involved. This is to
ensure the customer is provided with the cor-
rect parts.
SHIPPING DAMAGE
All equipment should be thoroughly examined
for shipping damage before and during
unloading. This equipment has been carefully
inspected at our factory. Any claim for loss
or damage must be made to the carrier. The
carrier will provide any necessary inspection
reports and/or claim forms.
Apparent Loss or Damage
If there is an obvious loss or damage, it must
be noted on the freight bill or express receipt
and signed by the carrier’s agent; otherwise,
carrier may refuse claim.
Concealed Loss or Damage
When loss or damage is not apparent until
after equipment is uncrated, retain all packing
materials and submit a written response to the
carrier for inspection within 15 days.
LOCATION
These merchandisers are designed for
displaying products in air conditioned stores
where temperature is maintained at or below
the ANSI / NSF-7 specified level and relative
humidity is maintained at or below 55%.
Placing refrigerated merchandisers in direct
sunlight, near hot tables or near other heat
sources could impair their efficiency. Like
other merchandisers, these merchandisers are
sensitive to air disturbances. Air currents
passing around merchandisers will seriously
impair their operation. Do NOT allow air
conditioning, electric fans, open doors or
windows, etc. to create air currents around the
merchandiser.
INSTALLATION
Recommended operating ambient
temperature is between
65°F (18°C) to 80°F (26.6°C).
Maximum relative humidity is 55%.

1-2 installation
P/N 0545716_G U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com
SELF CONTAINED (LOCATION)
GSVM-4060 and GSVM-4072 (at 75°F/55%
relative humidity, maximum ambient conditions)
has front condenserair intake and discharge.
Maintain a minimum clearance distance of two
feet in front of the merchandiser so that air
discharge and air intake is not obstructed.
GSVM-4072 (at 80°F/55% relative humidity,
maximum ambient conditions) and
GSVM-5272 each require a 5 inch minimum
clearance behind the merchandiser and
clearance above the merchandiser since its air
flows straight through the condensing unit
compartment. Brackets are provided for field
attachment to obtain this rear 5 inch minimum
clearance.
For California Businesses:
This warning is the result of the California State
law known as the California Safe Drinking Water
and Toxic Enforcement Act of 1986, which is
commonly referred to as “Proposition 65.”
This warning does not mean that Hussmann
products will cause cancer or reproductive harm, or
is in violation of any product-safety standards or
requirements. As clarified by the California State
government, Proposition 65 can be considered more
of a ‘right to know’ law than a pure product safety
law. When used as designed, Hussmann believes
that our products are not harmful. We provide
the Proposition 65 warning to stay in compliance
with California State law. It is your responsibility
to provide accurate Proposition 65 warning labels
to your customers when necessary. For more
information on Proposition 65, please visit the
California State government website.
GSVM-5272
GSVM-4072
GSVM-5272
GSVM-4072
This product may contain chemicals
known to the State of California to
cause cancer, birth defects, or other
reproductive harm.

P/N 0545716_G 1-3
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. GSVM Open Vertical Merchandisers
MODEL DESCRIPTION
The GSVM open vertical merchandiser offers
versatility in the display of medium temperature
(32º F to 41º F) products such as dairy products,
prepared salads, pizza and fresh entrees that
are pre-chilled in a cooler. Carefully read and
follow the instructions prior operating the mer-
chandiser.
UNLOADING
Unloading from Trailer:
Lever Bar (also known as a Mule, Johnson
Bar, J-bar, Lever Dolly, or Pry Lever)
Move the merchandiser as close as possible to
its permanent location and remove all packaging.
Check for damage before discarding packaging.
Remove all separately packed accessories such
as kits and shelves. Improper handling may
cause damage to the merchandiser when unloading
to avoid damage:
1. Do not drag the merchandiser out of the
trailer. Use a Johnson bar (mule).
2. Use a forklift or dolly to remove the
merchandiser from the trailer.
EXTERIOR LOADING
Do NOT walk on top of merchandisers or
damage to the merchandisers and serious
personal injury could occur.
merchandisers are not structurally
designed to support external loading
such as the weight of a person. Do not place
heavy objects on the merchandiser.
SHIPPING SKID
Each merchandiser is shipped on a skid to
protect the merchandiser’s base, and to make
positioning the case easier.
Do not remove the shipping skid until the
merchandiser is near its final location. The
skid provides protection for both the merchan-
diser and the floor.
Remove the skid by raising one end of the
merchandiser approximately 6 inches. Block the
merchandiser securely, and remove the two skid
bolts from the raised end. Replace the bolts
with (provided) leg levelers. Repeat this proce-
dure at opposing end. Once the leg levelers are
secured in place, the merchandiser may be slid
off the skid and placed in its final location.
DO NOT TILT MERCHANDISER ON ITS
SIDE OR END WHEN REMOVING SKID.
Once the skid is removed, the merchandiser
must be lifted —NOT PUSHED— to reposition.
Check floor where merchandisers are to be set
to see if it is a level area. Determine the highest
part of the floor.
Do not walk or put heavy objects on case.
Do NOT remove shipping crate until the
merchandiser is positioned
for installation.
Do NOT stand or walk on top of
merchandiser. Do not store items or
ammable materials atop the unit.

1-4 installation
P/N 0545716_G U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com
MERCHANDISER LEVELING
Besure to position merchandisers proper-
ly. Level the merchandiser by all four corners.
Merchandiser(s) must be installed level to
ensure proper operation of the refrigeration
system, and to ensure proper drainage of
defrost water.
OPTIONAL LEGS
NSF® approved legs replace the leg levelers if
required by local health codes. The legs raise
the case 6 inches for cleaning purposes. An
optional skirt kit can be provided to snap on
the legs.
SERIAL PLATE LOCATION
The serial plate is located on the interior top,
left side of the merchandiser. It contains all
pertinent information such as model, serial
number, amperage rating, refrigerant type and
charge. This information will be needed to install,
service or order parts for the merchandiser.
REFRIGERATION UNIT ACCESS
The lower front panel may be removed by
removing screw at bottom and lifting the panel
straight upward and over the tabs on which it
is hanging. The panel is installed by reversing the
above procedure.
Ensure lower front panel is flat against the
floor when installed to prevent air circulation
problems for self contained merchandisers.
Display is mounted on left
side of access panel. Be
careful not to detach cable
from display when removing
access panel.
SEALING MERCHANDISER TO FLOOR
If required by local sanitary codes, or if the
customer desires, merchandisers may be sealed
to the floor using a vinyl cove base trim. The
size needed will depend on how much variation
there is in the floor, from one end of the
merchandiser to the other. Sealing of the lower
front and rear panels on self contained models
may hamper their removal for servicing or
maintenance of the condensing unit.
NOTE: Do not allow trim to cover any intake
or discharge grilles located in the lower front
panel.
Serial Plate
Lift up and
out to remove
access panel
Front Panel
Controller
Display

P/N 0545716_G 1-5
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. GSVM Open Vertical Merchandisers
NIGHT CURTAIN INSTALLATION
Night curtains are used to cover the case opening
after normal business hours. The curtains
improve energy consumption, allowing the
refrigeration system to work less.
Carefully inspect the night curtain kit to
ensure there is no damage from breakage
during shipping. Case should be positioned
and leveled before installing the night curtain.
Position night curtain on top panel. Measure
21 inches to edge of the end night curtain.
Center night curtain to length of case.
Fasten night curtain to top panel using (3) #8
x 1/2 in. screws.
Night Curtain
The night curtain for GSVM is standard
for model 5272 and is an optional kit for
models 4060 and 4072.

1-6 installation
P/N 0545716_G U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com
Secure bottom of night curtain using bottom
clip as shown below. Clip is to be installed 2
inches in front access panel.
A
Night Curtain Installed
Bottom Clip
Bottom Clip
Front Access
Panel

P/N 0545716_G 1-7
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. GSVM Open Vertical Merchandisers
Hussmann Self-Contained Refrigeration Equipment Start Up Check List
***Please note that failure to follow this start-up document may void your factory warranty***
Form HSCW01 Rev. 30MAY12 P/N 0525209_B
Step Startup Activity Check
1 Locate, read and maintain install/operation manual in a safe place for
future reference.
2 Examine unit. Confirm there is NO damage or concealed damage.
3 Level the unit, side to side and front to rear.
4 Remove all shipping brackets/compressor straps/bolts etc.
5 Unit must be run on a dedicated electrical circuit without the use of
an extension cord.
6 Ensure that the proper electrical requirements for the equipment are
supplied.
7 Verify field electrical connections are tight.
8 Verify all electrical wiring is secured and clear of any sharp edges or
hot lines.
9 Verify the condensate drain line is properly trapped and pitched.
10 Verify all required clearances on the sides and back of unit.
11 Verify there are no air disturbances external to the unit. Heat and air
registers, fans, and doors etc.
Advise owner/operator that merchandiser must operate at temperature for 24 hrs prior to loading
with product.
LEGAL DISCLAIMER:
Hussmann shall not be liable for any repair or replacements made without the written consent of Hussmann, or when the product is installed or operated in a manner
contrary to the printed instructions covering installation and service which accompanied such product.

1-8 installation
P/N 0545716_G U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com
NOTE:

P/N 0545716_G 2-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. GSVM Open Vertical Merchandisers
MERCHANDISER ELECTRICAL DATA
Refer to Appendix A of this manual or the
merchandiser’s serial plate for electrical
information.
FIELD WIRING
Field wiring must be sized for component
amperes stamped on the serial plate. Actual
ampere draw may be less than specified.
ELECTRICAL CONNECTIONS
All wiring must be in compliance with NEC
and local codes. All electrical connections for
GSVM-5272 self-contained are to be made in
the electrical Handy Box located behind the
removable base panel at the left end of the
merchandiser when facing the discharge air
honeycomb. GSVM-4060 and GSVM-4072 are
provided with a power cord.
POWER SWITCH
The main electrical power switch is located
behind the front louvered access panel. The
power switch must be turned OFF before
servicing the merchandiser.
ELECTRICAL OUTLET
Before the merchandiser is connected to any
wall circuit, use a voltmeter to check that the
outlet is at 100% of the rated voltage. The wall
circuit must be dedicated for the merchandiser.
Failure to do so voids the warranty. Do not
use an extension cord. Never plug in more
than one merchandiser per electrical circuit.
• Always use a dedicated circuit with the
amperage stated on the unit.
• Plug into an outlet designed for the plug.
• Do not overload the circuit
• Do not use long or thin extension cords.
Never use adapters.
• If in doubt, call an electrician.
GSVM-4060 and
GSVM-4072 have a
factory-installed power
cord that is attached at
the electrical box.
ELECTRICAL / REFRIGERATION
ALWAYS CHECK THE SERIAL PLATE FOR
COMPONENT AMPERES
NEMA 5-20R
Receptacle
GSVM-4060
GSVM-4072
Merchandiser must be grounded.
Do not remove the power supply cord ground.
Risk of Electric Shock. If cord or plug
becomes damaged, replace only with
a cord and plug of the same type.
IMPORTANT!!
For USA/Canada, a HI-Humidity
Condensate Pan Kit is provided with
GSVM-4060, a separate dedicated cir-
cuit is required - 120V, 15 Amp
circuit and a NEMA 5-15R receptacle.
NOTE: This extra circuit is for the
Hi-Humidity condensate pan kit only.
It is not part of the case circuit.

2-2 electrical / refrigeration
P/N 0545716_G U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com
REFRIGERATION
(Self Contained Models)
Each self contained model is equipped with
its own condensing unit and control panel
located beneath the display area. The correct
type of refrigerant will be stamped on each
merchandiser’s serial plate. The merchandiser
refrigeration piping is leak tested. The unit is
charged with refrigerant, and shipped from
the factory with all service valves open.
GSVM models have a refrigeration system
that uses a hermetic compressor. GSVM-4060
and GSVM-4072 systems use a capillary tube
for refrigerant control. The capillary tube is
soldered to the suction line pull-out coil for
proper heat exchange. If the capillary should
become plugged or damaged, it is best to replace
the heat exchanger.
GSVM-5272 employs a bleed port type
expansion valve for proper refrigerant control.
Read the merchandiser’s serial plate for the
appropriate refrigerant type and weight.
WATER OUTLET AND WATER SEAL
GSVM models 4072 and 5272 require a floor
drain. The condensate water outlet is located
in the center of the merchandiser. The outlet
has a factory-installed external water seal.
For self contained models like GSVM-4060,
this water seal drains into an electric condensate
pan located beneath the merchandiser. The
pan uses a thermistor that senses water in the
pan, adjusting the amount of heat required
to evaporate the water. Ensure the drain hose
is properly trapped, and the drain area is not
clogged.
For self contained models like GSVM-4072
and GSVM-5272, this water seal drains into
an electric condensate pan located beneath
the merchandiser. The pan uses a thermistor
that senses water in the pan, adjusting the
amount of heat required to evaporate the
water. GSVM has an electric condensate pan
and uses a floating sensor.
Ensure the drain hose is properly trapped,
and the drain area is not clogged. (Review
note)
NOTE: All lower base panels must be in place
when the refrigerator is operating. If not, airflow
from the condenser will be directed over the evap-
orator pan and defrost water in the pan may over-
flow.
OPTIONAL ELECTRIC
CONDENSATE PAN
An optional high-humidity condensate pan
kit requires a dedicated 15 Amp circuit - 120V
(GSVM-4072 and GSVM-5272).
— LOCK OUT / TAG OUT —
To avoid serious injury or death from electri-
cal shock, always disconnect the electrical
power at the main disconnect when servicing
or replacing any electrical component. This
includes, but is not limited to, such items as
doors, lights, fans, heaters, and thermostats.

P/N 0545716_G 2-3
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. GSVM Open Vertical Merchandisers
CONTROLLER
Hussmann Controller Operation RTN
1. Plug the merchandiser plug into its receptacle.
a. The controller display will illuminate.
b. The interior light will illuminate.
2. After the control preprogrammed time delay
of up to 6 minutes, the compressor and evapo-
rator fan(s) will start if the control is calling for
cooling.
3. The control will cycle the compressor but may
also cycle evaporator fan(s) on and off deter-
mined by the Set-Point and Differential tem-
peratures.
a. The Set-Point is the adjustable
preprogrammed temperature.
b. The Differential is the non-adjustable pre
programmed temperature.
c. The Control is designed to read and
display a cabinet temperature not a product
temperature.
This cabinet temperature may reect the re-
frigeration cycle of the Set-Point and it’s Dif-
ferential. The most accurate temperature on
a cabinets operation is to verify the product
temperature.
Taking as an example a VRL case, freezer, If the
Set-Point is -12°F and the Differential is 9°F.
(Set-Point) -12°F + 9 (Differential) = -3°F. The
compressor and evaporator fan(s) will cycle off
-12°F and back on at -3°F.
Main Features:
• Panel-mounted
• Energy saving algorithms and optimised de-
frost control
• 8 preloaded applications
• Defrost at single / double evaporator
• Frame Heater
• Local network auto-conguration
• Direct load connection (up to 2 HP)
• Supply voltage control LVD
• Presence of an open collector output
RTN400 Page 17/130
KDEPLUS BUTTONS
The KDEPlus keyboard has 4 keys, as shown in the illustration:
1
2
3
4
Each key has a different function depending on whether it is:
• Pressed and released
• Pressed for at least 5 seconds
• Pressed and held at start-up
• Pressed in combination with another key.
KEYS
The following table summarizes the function of each key:
No Key Action
Pressed and released Press for at least 5 secs Start-up
1• Scrolls through menu items
• Decreases values
Activates the Manual Defrost function
(from outside menus). ---
2• Scrolls through menu items
• Decreases values
Function can be configured by the user
(from outside menus).
(see parameter H32)
---
3
• Returns to the previous menu
level
• Confirms parameter value
Activates the Stand-by function
(from outside menus). ---
4set
• Displays any alarms
(if active)
• Opens Machine Status menu
• Confirms commands
Opens the Programming Menu
(User and Installer parameters)
When pressed during
start-up it enables
the user to select the
application to be loaded.
STANDBY or ESC
DOWN SET
UP
Information reprinted with permission from the controller manufacturer.

2-4 electrical / refrigeration
P/N 0545716_G U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com
Key Functions:
• 2 ON/OFF regulators for HOT/COLD
• Single defrost and double evaporator
(heatings, modulated heaters, reverse cycle, hot gas)
• Evaporator fans and condenser fans
• Frame Heater
• AUX
• Light
• Door switch
• ON /OFF
• Deep cooling cycle
• Day / Night
• Diagnostics
• “Easy Map” programming
• Programmable inputs/outputs
• LINK2 local area network
• RS485 communication protocol: Modbus
• Compatible with Device Manager (DM)
• Compatible with Unicard and Multi-function key
RTN400 Page 7/130
2 - SPECIFICATIONS
TECHNICAL DATA
Classification: electronic automatic control (not safety) device for incorporation
Mounting: panel mounting
Type of action: 1.B
Pollution class: 2
Material class: IIIa
Overvoltage category: II
Nominal pulse voltage: 2500V
Temperature: Use: –5 … +55°C - Storage: -30 … +85°C
Power supply: SMPS 100-240Va ±10% 50/60 Hz
Power consumption: 5.5W max
Fire resistance category: D
Software class: A
RTC battery life: In absence of external power, the clock battery will last 3 years.
FURTHER INFORMATION
INPUT CHARACTERISTICS
Measurement range: NTC: -50.0°C ... +110°C; PTC: -55.0°C ... +150°C; PT1000: -60.0°C ... +150°C
(on 3-digit display with +/- sign)
Accuracy: ±1.0° for temperatures below -30°C
±0.5° for temperatures between -30°C and +25°C
±1.0° for temperatures above +25°C
Resolution: 1 or 0.1°C
Buzzer: NO
Analogue/Digital Inputs: 5 configurable NTC/PTC/PT1000/DI inputs
1 multi-function, voltage-free digital input (D.I.)
OUTPUT CHARACTERISTICS
Digital Outputs: OUT1: 1 SPST relay: 2HP max 240Va
OUT2: 1 SPDT relay: 1HP max 250Va
OUT3: 1 SPDT relay: 8(4)A max 250Va
OUT4: 1 SPST relay: 8(4)A max 250Va
OC (Open Collector) Output: OC: 1 multifunctional output: 12Vc 20mA
MECHANICAL CHARACTERISTICS
Dimensions: 121x92 mm
Terminals: faston and screw for wires with cross-section of 2.5mm2
TTL for Unicard / Device Manager connection (via DMI)
Usage / Storage: 10...90% RH (non-condensing)
Connectors:
Humidity:
REGULATIONS
Electromagnetic compatibility: The device complies with Directive 2004/108/EC
Safety: The device complies with Directive 2006/95/EC
Food Safety: The device complies with standard EN13485 as follows:
• Suitable for storage.
• Application: air.
• Climate range A
• measurement class 1 in the range from -25°C to 15°C (*)
(* with Eliwell probes only)
NOTE: The technical specifications stated in this document regarding measurement (range, accuracy, resolution, etc.) refer to
the instrument alone and not to any accessories provided, such as the probes.
This means, for example, that the error introduced by the probe must be added to the error of the instrument.

P/N 0545716_G 2-5
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. GSVM Open Vertical Merchandisers
RTN400 Page 7/130
2 - SPECIFICATIONS
TECHNICAL DATA
Classification: electronic automatic control (not safety) device for incorporation
Mounting: panel mounting
Type of action: 1.B
Pollution class: 2
Material class: IIIa
Overvoltage category: II
Nominal pulse voltage: 2500V
Temperature: Use: –5 … +55°C - Storage: -30 … +85°C
Power supply: SMPS 100-240Va ±10% 50/60 Hz
Power consumption: 5.5W max
Fire resistance category: D
Software class: A
RTC battery life: In absence of external power, the clock battery will last 3 years.
FURTHER INFORMATION
INPUT CHARACTERISTICS
Measurement range: NTC: -50.0°C ... +110°C; PTC: -55.0°C ... +150°C; PT1000: -60.0°C ... +150°C
(on 3-digit display with +/- sign)
Accuracy: ±1.0° for temperatures below -30°C
±0.5° for temperatures between -30°C and +25°C
±1.0° for temperatures above +25°C
Resolution: 1 or 0.1°C
Buzzer: NO
Analogue/Digital Inputs: 5 configurable NTC/PTC/PT1000/DI inputs
1 multi-function, voltage-free digital input (D.I.)
OUTPUT CHARACTERISTICS
Digital Outputs: OUT1: 1 SPST relay: 2HP max 240Va
OUT2: 1 SPDT relay: 1HP max 250Va
OUT3: 1 SPDT relay: 8(4)A max 250Va
OUT4: 1 SPST relay: 8(4)A max 250Va
OC (Open Collector) Output: OC: 1 multifunctional output: 12Vc 20mA
MECHANICAL CHARACTERISTICS
Dimensions: 121x92 mm
Terminals: faston and screw for wires with cross-section of 2.5mm2
TTL for Unicard / Device Manager connection (via DMI)
Usage / Storage: 10...90% RH (non-condensing)
Connectors:
Humidity:
REGULATIONS
Electromagnetic compatibility: The device complies with Directive 2004/108/EC
Safety: The device complies with Directive 2006/95/EC
Food Safety: The device complies with standard EN13485 as follows:
• Suitable for storage.
• Application: air.
• Climate range A
• measurement class 1 in the range from -25°C to 15°C (*)
(* with Eliwell probes only)
NOTE
: The technical specifications stated in this document regarding measurement (range, accuracy, resolution, etc.) refer to
the instrument alone and not to any accessories provided, such as the probes.
This means, for example, that the error introduced by the probe must be added to the error of the instrument.

2-6 electrical / refrigeration
P/N 0545716_G U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com
RTN400 Page 8/130
CONNECTIONS
TERMINALS
LINK2
KEYB
{
{
RS485
OPTIONAL
ELIWELL
ELIWELL
33
32
31
29
30
28
27
26
25
24
22
20
18
23
21
19
1
2
3
5
9
4
11
12
10
GND D
GND
GND
D
OC
12V
D
12V
15 16 17
34 35 36 37 38 39
A
14
13
6
8
7
OUT2 (1HP)
OUT1 (2HP)
OUT3 (8A)
OUT4 (8A)
*N.B.: analogue inputs PB1...PB5 can also be configured as Digital Inputs DI.
TERMINALS
1-2 NEUTRAL. These are power supply terminals. 15-16-17 Connection to KDEPlus or KDWPlus external
keyboard or ECPlus echo module.
3LINE. These are power supply terminals. 19-18 PB1 probe connection.
4OUT2 Shared Terminal 21-20 PB2 probe connection.
5N.O. OUT2 23-22 PB3 probe connection.
6N.C. OUT2 23-24 PB4 probe connection.
7OUT3 Shared Terminal 23-25 PB5 probe connection.
8N.C. OUT3 27-26 Digital input (DI).
9N.O. OUT3 28-29 LINK2. Connection 1 - local area network.
10 OUT1 Shared Terminal 30-31 LINK2. Connection 2 - local area network.
11 N.O. OUT1 32-33 Open Collector Output (OC).
12 Not Used ATTL Unicard/DMI/Multi Function Key connection
13 OUT4 Shared Terminal 34-35-36 RS485. Connection 1 - Supervision Gateway.
14 N.O. OUT4 37-38-39 RS485. Connection 2 - Supervision Gateway.

P/N 0545716_G 2-7
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. GSVM Open Vertical Merchandisers
RTN400 Page 16/130
LED
RTN400 family controllers will also function even if a keyboard has not been connected.
With KDEPlus or KDWPlus keyboards (which are the same and guarantee the same functions), the display will be as follows:
1
2
5
6
8
7
4
3
Meaning of LEDs:
No Icon LED Operation Meaning
1Compressor
Permanently on compressor on
Blinking Delay, protection or start-up blocked
OFF otherwise
2Defrost
Permanently on Defrost active
Blinking Activated manually or from Digital Input
OFF otherwise
3Fans Permanently on Fans active
OFF otherwise
4Reduced SET / Economy
Permanently on Energy Saving active
Blinking Reduced setpoint active
OFF otherwise
5Alarm
Permanently on alarm active
Blinking Alarm acknowledged
OFF otherwise
6°F readout Permanently on °F setting (dro =1)
OFF otherwise
7AUX
Permanently on Aux output active and/or light on
Blinking Deep cooling on
OFF otherwise
8°C readout Permanently on °C setting (dro = 0)
OFF otherwise
N.B.: When the instrument is powered on it performs a lamp test, during which time the display and LEDs will
flash for several seconds to check that they all function correctly.

2-8 electrical / refrigeration
P/N 0545716_G U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com
RTN400 Page 17/130
KDEPLUS BUTTONS
The KDEPlus keyboard has 4 keys, as shown in the illustration:
1
2
3
4
Each key has a different function depending on whether it is:
• Pressed and released
• Pressed for at least 5 seconds
• Pressed and held at start-up
• Pressed in combination with another key.
KEYS
The following table summarizes the function of each key:
No Key Action
Pressed and released Press for at least 5 secs Start-up
1• Scrolls through menu items
• Decreases values
Activates the Manual Defrost function
(from outside menus). ---
2• Scrolls through menu items
• Decreases values
Function can be configured by the user
(from outside menus).
(see parameter H32)
---
3
• Returns to the previous menu
level
• Confirms parameter value
Activates the Stand-by function
(from outside menus). ---
4set
• Displays any alarms
(if active)
• Opens Machine Status menu
• Confirms commands
Opens the Programming Menu
(User and Installer parameters)
When pressed during
start-up it enables
the user to select the
application to be loaded.
STANDBY or ESC
DOWN SET
UP