Hussmann FNGSC-A Installation & Operation Manual
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Hussmann FNGSC-A Installation & Operation Manual

Dual temperature self contained island merchandiser
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FNGSC-A
Dual Temperature Self Contained
Island Merchandiser
with R-290 Refrigerant
WARNINGS:
If the information in these instructions are not followed
exactly, a fire or explosion may result, causing property
damage, personal injury or death.
Installation and service must be performed by a qualified
installer or service agency.
READ THE ENTIRE MANUAL BEFORE
INSTALLING OR USING THIS EQUIPMENT.
The unit uses R-290 gas as the refrigerant. R-290 is
flammable and heavier than air. It collects first in low
areas but can be circulated by the fans. If propane gas
is present or even suspected, do not allow untrained
personnel to attempt to find the cause. The propane
gas used in the unit has no odor. The lack of smell does
not indicate a lack of escaped gas. If a leak is detected,
immediately evacuate all persons from the store, and
contact the local fire department to advise them that
a propane leak has occurred. Do not let any persons
back into the store until the qualified service technician
Installation &
has arrived and that technician advises that it is safe to
return to the store. No open flames, cigarettes or other
Operation Manual
possible sources of ignition should be used inside or in
the vicinity of the units.
FAILURE TO ABIDE BY THIS WARNING COULD
RESULT IN AN EXPLOSION, DEATH, INJURY AND
PROPERTY DAMAGE.
P/N 3141959_C
December 2021
IMPORTANT
Keep in store for future reference!
Spanish 3141958
MANUAL- I/O SELF-CONTAINED FNGSC-A

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  • Page 1 FAILURE TO ABIDE BY THIS WARNING COULD RESULT IN AN EXPLOSION, DEATH, INJURY AND PROPERTY DAMAGE. P/N 3141959_C December 2021 IMPORTANT Keep in store for future reference! Spanish 3141958 MANUAL- I/O SELF-CONTAINED FNGSC-A...
  • Page 2 • Component parts are designed for propane and non-incendive and non-sparking. Component parts shall only be replaced with identical repair parts. FAILURE TO ABIDE BY THIS WARNING COULD RESULT IN AN EXPLOSION, DEATH, INJURY AND PROPERTY DAMAGE. P/N 3141959_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 3 Only load pre-chilled products in in freezer before loading into merchandiser. medium temperature settings. These merchandisers are designed Only load pre-frozen products in low temperature for only pre-frozen products. settings. FNGSC-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

  • Page 4: Table Of Contents

    LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 Hussmann Product Control . . . . . . . . . . . 1-1 KDEPLUS Buttons .

  • Page 5: Ansi Z535.5 Definitions

    . August 31, 2018 Excessive ambient conditions may cause conden- This warning does not mean that Hussmann products sation and therefore sweating of doors. Facility oper- will cause cancer or reproductive harm, or is in ators should monitor doors and floor conditions to violation of any product-safety standards or ensure safety of persons.

  • Page 7: Installation

    65°F (18°C) to 75°F (24°C). or damage must be made to the carrier . The Maximum relative humidity is 55%. carrier will provide any necessary inspection reports and/or claim forms . FNGSC-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

  • Page 8: Self Contained (Location)

    2 . Use caution when moving case to setup location . Use care to not damage refrigeration system . Confirm there are no refrigerant leaks during startup of the case(s) . P/N 3141959_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...

  • Page 9: Shipping Skid

    . Lift only at base of skid! Remove any braces and/or skids attached (blanket wrapped merchandiser may have skids) . Remove #7 x 2” Philips screws from merchandiser base FNGSC-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

  • Page 10: Serial Plate Location

    . Make sure lower front and rear Remove Central REMOVE CENTRAL panels are still able to be removed to service the AND SIDE SCREWS and Side Screws condensing unit when sealing around the case . P/N 3141959_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...

  • Page 11: Start Up Check List

    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.
  • Page 12 NSTALLATION NOTES: P/N 3141959_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...

  • Page 13: Electrical / Refrigeration

    • If in doubt, call an electrician . evaporator . The correct type of refrigerant will be stamped on each merchandiser’s serial plate . The merchandiser refrigeration piping is leak tested . FNGSC-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

  • Page 14: Refrigeration System Functionality

    (RSV1, RSV2) are energized valves, (HGSV1, HGSV2) are deenergized and and held open, allowing the gas to flow (closed) . through each condenser . System Diagram- Refrigeration Mode (FNGSC8A) P/N 3141959_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 15 P/N 3141959_C System Diagram- Refrigeration Mode (FNGSC6A) System Diagram- Refrigeration Mode (FNGSC4A) FNGSC-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 16 . through each evaporator inlet . The evaporator is split and circuited for 2 refrigeration circuits . System Diagram - Defrost Mode - Hot Gas Bypass (FNGSC8A) P/N 3141959_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 17 P/N 3141959_C System Diagram - Defrost Mode - Hot Gas Bypass (FNGSC6A) System Diagram - Defrost Mode - Hot Gas Bypass (FNGSC4A) FNGSC-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

  • Page 18: Refrigeration System Layout

    Electrical Outlets Elec Enclosure Box Machine Compartment Layout (FNGSC8A shown) Hot Gas Line Hot Gas tee Evap Inlet Evap Outlet AIR EXHAUST AIR INTAKE Refrigeration Circuit #1 (left side) P/N 3141959_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 19 — the inside of the displays case and the inside of the refrigeration system . Refrigeration lines are under pressure. Refrigerant must be recovered before attempting any connection or repair. FNGSC-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

  • Page 20: Replacing Refrigeration System

    3 . Tap system with line tap valves, attaching gauges to to the system to purge it with nitrogen . the high and low sides of the system . P/N 3141959_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...

  • Page 21: Charging

    This includes, but is not limited to, such items as doors, lights, fans, heaters, and thermostats. FNGSC-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

  • Page 22: Evaporation Pans

    . Check that the case is level. The case must be level to ensure proper operation of the evaporation pan(s). P/N 3141959_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...

  • Page 23: Installing Drip Piping

    . There should be a minimum pitch of spaces, such as between merchandisers or  in. per ft (20 mm per 1 m). between a merchandiser and a store wall, provide means to prevent freezing . FNGSC-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

  • Page 24: Drip Piping Lineup Arrangements

    . drip piping pitch cannot be maintained . P/N 3141959_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...

  • Page 25: Start Up / Operation

    (Green snowflake symbol) . After coming out from defrost cycle, the system “YES” goes to refrigeration mode showing the Blue Figure 5 snowflake on the display . (Continued on next page .) FNGSC-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 26 . If for some reason the system is not able to achieve the defined set point, the “dEF” message will last 40 minutes . Figure A Figure B P/N 3141959_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...

  • Page 27: Controller Operation

    1 . Plug the merchandiser plug into its receptacle . a cabinets operation is to verify the product temperature . a . The controller display will illuminate . b . The interior light will illuminate . FNGSC-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

  • Page 28: Led

    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. P/N 3141959_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...

  • Page 29: Kdeplus Buttons

    (if active) Opens the Programming Menu start-up it enables • Opens Machine Status menu (User and Installer parameters) the user to select the • Confirms commands application to be loaded. FNGSC-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

  • Page 30: Setpoint: Setting And Edit Lock

    The values that can be set apply to both keys and the functions that can be activated are: Increases H32/H33 value Function to enable disabled defrost reduced set Light Energy saving Stand-by Deep cooling cycle Start/end defrost P/N 3141959_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...

  • Page 31: Typical Sensor Location

    CHANNEL TO SHARP EDGES AS SHOWN DEFROST SENSOR SECURE WITH PLASTIC TIE AND ENSURE PHYSICAL CONTACT WITH SUCTION TUBE WIRE SHOULD BE ROUTED THROUGH SENSORS NIPPLE Sensor Location - FNGSC8A FNGSC-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 32 USE TIE WRAP TO SECURE SENSOR BELOW THE LOWEST COIL TUBE 0257404 TUBE 3/8 ID VINYL TO PROTECT SENSOR CABLE 8.50 (10 INCHES LONG) DETAIL B Defrost Sensor Location - FNGSC6A P/N 3141959_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 33 SECURE SENSOR 1.25 SAME HIGHT OF THE WITH PLASTIC TIE LOWEST TUBES ROW ISOMETRIC VIEW DETAIL B FRONT VIEW SOME TUBES WERE REMOVED FOR CLARITY Defrost Sensor Location - FNGSC4A FNGSC-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

  • Page 34: Controls And Adjustments

    To ensure a thorough defrost, defrost must be discharge louver . terminated by the temperature termination setting — not by time . P/N 3141959_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...

  • Page 35: Load Limits

    These models have a thermometer . The thermometer is located at the top, interior of IR DISCHARGE AND RETURN FLUES MUST the merchandiser . REMAIN OPEN AND FREE OF OBSTRUCTION AT FNGSC-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

  • Page 36: Thermometer

    Required Thermometer Thermometer — Hussmann Part TM.4911251 Hussmann Corporation • 12999 St. Charles Rock Road • Bridgeton, MO 63044-2483 U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com © 2007 Hussmann Corporation This thermometer is provided in response to United States Food and Drug Administration (US FDA) Food Code [ http://www.fda.gov/ ]...

  • Page 37: Maintenance

    • Do not use high pressure water hoses . Do NOT allow cleaning agent or Product will be degraded and may spoil if cloth to contact food product. allowed to sit in a non-refrigerated area. FNGSC-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

  • Page 38: Removing Scratches From Bumper

    3 . After cleaning, replace in reverse order . includes, but is not limited to, such items as Damaged honeycomb must be replaced . doors, lights, fans, heaters, and thermostats. P/N 3141959_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...

  • Page 39: Cleaning Stainless Steel Surfaces

    To clean the coils, use a vacuum cleaner with a wand attachment and a soft (non-metallic) brush to remove dirt and debris . Do not bend coil fins . FNGSC-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

  • Page 40: Cleaning Evaporation Pan

    Evaporation Pan is Hot! – and poses risk of bodily injury Always Wear gloves and protective eye wear when servicing. Turn off evaporation pan heater, and allow pan to cool. P/N 3141959_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...

  • Page 41: Maintenance Check List

    Verify unit doors and lids work and are sealed correctly. Verify that all the panels, shields and covers are in place. Technician Notes: Form HSCW03 Rev-29 OCTOBER13 0525210_C FNGSC-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 42 NSTALLATION NOTES: P/N 3141959_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...

  • Page 43: Service

    (part number on plastic blades) positioned as indicated on the parts list. Unplug power cords before servicing. Parts may be ordered at Hussmann’s Performance Parts e-store: https://parts.hussmann.com/ 4 . Take off motors from assembly and disconnect harness .

  • Page 44: Replacing Inverter

    7 . Reverse the process, and make sure screws are hand-tight and everything is working properly . Product will be degraded and may spoil if FNGSC4A allowed to sit in a non-refrigerated area. FNGSC4 Shown P/N 3141959_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...

  • Page 45: Replacing Condenser Motor

    Unplug the power cords before servicing. 4 . Disconnect condenser motor harness . 5 . If a flexible extension is used, skip Step 6 . Parts may be ordered at Hussmann’s Performance Parts e-store: 6 . Release screws to partially remove venturi https://parts.hussmann.com/...

  • Page 46: Replacing Compressor

    6 . Disconnect all wires and harness from the 3 . Make sure there is no refrigerant left in compressor . the system . Refer to Page 2-6 - Steps to Recover Refrigerant . P/N 3141959_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...

  • Page 47: Replacing Drain Heater

    P/N 3141959_C REPLACING DRAIN HEATER Unplug the power cords before servicing. 7 . Take off compressor screws . Parts may be ordered at Hussmann’s Performance Parts e-store: https://parts.hussmann.com/ Call toll free: 855-487-7778 Required Tools: • Screwdriver / Philips Tip • 1/4" Allen Wrench FNGSC8A Condensing Unit Shown 1 .

  • Page 48: Replacing Pan Heater

    3 . Slide out the condensing unit completely (Fig B) . Be careful using the condensing unit base to pull it out . Make sure not to stress or interfere with other parts . FNGSC8A Shown P/N 3141959_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...

  • Page 49: Replacing Solenoid Valves

    P/N 3141959_C REPLACING SOLENOID VALVES Unplug the power cords before servicing. 4 . Remove condensate pan screws and disconnect heater wires . Parts may be ordered at Hussmann’s Performance Parts e-store: https://parts.hussmann.com/ Call toll free: 855-487-7778 Required Tools: • Screwdriver / Philips Tip •...

  • Page 50: Inverter Board Diagnostics

    . Basically, it indicates if there is a problem with compressor CF10B Inverter or Thermostat . The table below describes the failure modes: FNGSC6A Condensing Unit P/N 3141959_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 51 P/N 3141959_C FNGSC-A Visual Depiction on Non-Incendive Replacement Parts Main Switch FNGSC-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

  • Page 52: Troubleshooting Guide

    2 . Control sensing element not 2 . Assure proper contact in positive contact 3 . Leak check, replace drier 3 . Short on refrigerant evacuate and recharge P/N 3141959_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com...
  • Page 53 2 . Check the ventilation inside evaporator . the store . 2 . Sdef probe is detached 3 . Air currents that alter the circulation of refrigerated air . FNGSC-A Self Contained Merchandisers HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
  • Page 54 To obtain warranty information or other support, contact your Hussmann representative. Please include the model and serial number of the product. Hussmann Corporation, Corporate Headquarters: Bridgeton, Missouri, U.S.A. 63044-2483 01 October 2012...

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