hussman VGM User Manual
Manual
Installation
& Operation
REV. 0505
/Chino
Rev. 0505
VGM, VGD
Vertical Glass Service Deli, Meat, Fish Case
VGM, VGD
Vertical Glass Service Deli, Meat, Fish Case
P/N VGM,VGD-0505
INSTALLATION & OPERATION GUIDE
1
VGM, VGD-0505
Contents
General Instructions
THIS BOOKLET CONTAINS INFORMATION ON:
General Instructions ................................................. 2
Important Information............................................. 3
Cut & Plan Views ....................................................... 3
Installation ................................................................. 4
LOCATION ............................................................................................................. 4
UNCRATING THE STAND....................................................................................... 4
LEVELING.............................................................................................................. 4
Plumbing.................................................................... 6
WASTE OUTLET AND P-TRAP .............................................................................. 6
INSTALLING CONDENSATE DRAIN ........................................................................ 6
Humidification .......................................................... 7
INSTRUCTIONS ...................................................................................................... 7
Refrigeration ............................................................. 8
REFRIGERANT TYPE ............................................................................................. 8
MEASURING THE OPERATING SUPERHEAT .......................................................... 8
T-STAT LOCATION.................................................................................................. 8
User Information ...................................................... 9
STOCKING.............................................................................................................. 9
IMPORTANT STEPS ................................................................................................ 9
CASE CLEANING.................................................................................................... 9
NON-GLARE GLASS ............................................................................................... 10
PLEXIGLASS & ACRYLIC CARE .............................................................................. 10
Maintenance .............................................................. 11
ELECTRICAL PRECAUTIONS ................................................................................... 11
REPLACING FLUORESCENT LAMPS ....................................................................... 11
TIPS & TROUBLESHOOTING ................................................................................. 11
LIFT UP GLASS ..................................................................................................... 11
Case Specifications ................................................... 14
Electrical Schematics ............................................... 15
Appendices ................................................................ 21
APPENDIX A. – Temperature Guidelines ............................................................ 21
APPENDIX B. – Application Recommendations.................................................. 21
APPENDIX C. – Field Recommendations ............................................................ 21
APPENDIX D. – Recommendations to user - .................................................... 22
Limited Warranty ..................................................... 23
VGM – Straight Glass Refrigerated Super High
Volume Meat or Deli Case
SHIPPING DAMAGE
All equipment should be thoroughly examined for
shipping damage before and during unloading.
This equipment has been carefully inspected at our
factory and the carrier has assumed responsibility for
safe arrival. If damaged, either apparent or concealed,
claim must be made to the carrier.
APPARENT LOSS OR DAMAGE
If there is an obvious loss or damage, it must be noted on
the freight bill or express receipt and signed by the
carrier’s agent; otherwise, carrier may refuse claim. The
carrier will supply necessary claim forms.
CONCEALED LOSS OR DAMAGE
When loss or damage is not apparent until after equipment
is un-crated, a claim for concealed damage is made. Make
request in writing to carrier for inspection within 15
days, and retain all packaging. The carrier will supply
inspection report and required claim forms.
SHORTAGES
Check your shipment for any possible shortages of
material. If a shortage should exist and is found to be the
responsibility of Hussmann Chino, notify Hussmann Chino.
If such a shortage involves the carrier, notify the carrier
immediately, and request an inspection. Hussmann Chino
will acknowledge shortages within ten days from receipt
of equipment.
HUSSMANN CHINO PRODUCT CONTROL
The serial number and shipping date of all equipment has
been recorded in Hussmann’s files for warranty and
replacement part purposes. All correspondence pertaining to warranty or par ts ordering must include the serial
number of each piece of equipment involved in order to
provide the customer with the correct parts.
Keep this booklet with the case at all times for future reference.
/Chino
A publication of
Hussmann® Chino
13770 Ramona Avenue • Chino, California 91710
(909) 628-8942 FAX
(909) 590-4910
(800) 395-9229
2
This equipment is to be installed
to comply with the applicable
NEC, Federal, State, and Local
Plumbing and Construction
Code having jurisdiction.
Important Information
The VGM / VGD service cases are easy to work, attractive merchandising display cases capable of maintaining
superb product quality, with the installation of the
proper controlling devices. These should be set according
to Hussmann’s specifications and combined with a
properly maintained humidity system. Incorrect settings
and failure to maintain the humidity system will result in
short product life from dehydration, shrinkage and
discoloration. Below are a few guidelines to ensure
optimum performance and product life.
• Review the Case Specification in this book to verify
thermostat setting. Do not set temperature too cold,
as this causes product dehydration.
•Temperatures should be achieved by a t-stat and suc-
Rev. 0505
tion solenoid at each case. Do not use EPR valves, liquid line solenoids or electronic control devices of any
kind. These controls allow temperature swings
causing product dehydration and excessive
energy consumption.
• Defrost cycles should be set according to the Case
Specifications in this book.
• Clean humidity system a minimum of every 90 days
for proper system operation.
•Work and rotate product – not to exceed a four (4)
hour period.
• Maintain sanitary conditions throughout the deli
holding, prep and working areas.
• Do not display product directly within the air discharge.
7
/8"
19
"
3/4
10"
4
/2"
28"
1
5
/4"
3
5
T8 Front
Deck Light
14"
16"
31"
"
16
/
3
21
1
11
/4"
12"
29
45"
Straight Glass Service Deli Case
VGD
Scale = 1/4"
8"
Cut & Plan Views
1
26
/2"
35
1
/
2
"
"
4
/
3
52
1
/2"
1
4
/4"
28"
Optional
Front
Deck
Light
"
16
/
3
21
1
11
/4"
3
32
/4"
Lift Up Deck
For Easy Cleaning
12"
1
29
/2"
45"
Straight Glass Service Meat / Fish Case
VGM
Scale = 1/2"
8"
29
1
/
4
"
"
4
/
3
52
1
/4"
4
11"
8'-2"
WATER, ELEC.
& REFRIG.
MECH.
STUB UP
AREA
19" X 19"
DRAIN
MECHANICAL
STUB UP AREA
19" X 19"
CASE FRONT
1" 1"
(VARIABLE LENGTHS)
VGD
Plan View
Scale = 1/4"
45"
11"
8'-2"
WATER, ELEC.
& REFRIG.
MECH.
STUB UP
AREA
19" X 19"
DRAIN
MECHANICAL
STUB UP AREA
19" X 19"
CASE FRONT
1" 1"
(VARIABLE LENGTHS)
VGM
Plan View
Scale = 1/4"
45"
3
VGM, VGD-0505
Installation
LOCATION
The refrigerated merchandisers have been designed for
use only in air conditioned stores where temperature
and humidity are maintained at or below 75°F and 55%
relative humidity. DO NOT allow air conditioning,
electric fans, ovens, open doors or windows (etc.) to
create air currents around the merchandiser, as this will
impair its correct operation.
Product temperature should always be maintained at a
constant and proper temperature. This means that from
the time the product is received, through storage,
preparation and display, the temperature of the product
must be controlled to maximize life of the product.
UNCRATING THE STAND
Place the fixture as close to its permanent position as
possible. Remove the top of the crate. Detach the walls
from each other and remove from the skid. Unbolt the
case from the skid. The fixture can now be lifted off the
crate skid. Lift only at base of stand!
EXTERIOR LOADING
These models have not been structurally designed to
support excessive external loading. Do not walk on
their tops; This could cause serious personal injury and
damage to the fixture.
DANGER!
IMPORTANT: READ BEFORE RAISING GLASS!
HEX SCREWS ALONG CLAMSHELL
MAY HAVE LOOSENED DURING
SHIPPING!! RETIGHTEN ALL
CLAMSHELL SCREWS BEFORE
OPENING GLASS!
RETIGHTEN GLASS AFTER CASE IS
BROUGHT TO OPERATING
TEMPERATURE FOR THE FIRST
TIME!
During shipment, the lubricant inside the cylinders may
have settled. This settling may cause excessive or uneven
tension on the glass—to the point of breakage. To avoid
any damage, please follow these three easy steps:
1. Slowly raise and lower each glass section 6 times to
a height of 6".
2. Increase the height to 12", and raise and lower the
glass 6 more times.
3. Finally raise the glass to it’s full extension, and lower.
These steps should release any settled lubricant within
the cylinders, and prevent any stress on the front glass.
SETTING AND JOINING
The sectional construction of these models enable them
to be joined in line to give the effect of one continuous
display. A joint trim kit is supplied with each joint.
LEVELING
IMPORTANT! IT IS IMPERATIVE THAT CASES BE
LEVELED FROM FRONT TO BACK AND SIDE TO SIDE
PRIOR TO JOINING. A LEVEL CASE IS NECESSARY
TO INSURE PROPER OPERATION, WATER DRAINAGE, GLASS ALIGNMENT, AND OPERATION OF THE
HINGES SUPPORTING THE GLASS. LEVELING THE
CASE CORRECTLY WILL SOLVE MOST HINGE OPERATION PROBLEMS.
NOTE: A. To avoid removing concrete flooring, begin lineup
leveling from the highest point of the store floor.
B. When wedges are involved in a lineup, set them first.
All cases were leveled and joined prior to shipment to
insure the closest possible fit when cases are joined in
the field. When joining, use a carpenter’s level and shim
legs accordingly. Case must be raised correctly, under
legs where support is best, to prevent damage to case.
1. Check level of floor where cases are to be set. Determine the highest point of the floor; cases will be
set off this point.
2. Set first case, and adjust legs over the highest part of
the floor so that case is level. Prevent damage – case
must be raised under leg or by use of 2x6 or 2x4 leg
brace. Remove side and back leg braces after case is
set.
3. Set second case as close as possible to the first case,
and level case to the first using the instructions in
step one.
4. Apply masking tape 1/8" in from end of case on inside
and outside rear mullion on both cases to be joined.
5. Apply liberal bead of case joint sealant (butyl) to dotted area shown in (Fig.2, #1) of first case. Apply heavy
amount to cover entire shaded area.
DO NOT USE PERMAGUM!
It is the contractor's
responsibility to install
case(s) according to local
construction and health
codes.
4
6. Slide second case up to first case snugly. Then level
second case to the first case so glass front, bumper
and top are flush.
7. To compress silicone at joint, use two Jurgenson
wood clamps. Make sure case is level from front to
back and side to side on inside bulkheads at joint.
8. Attach sections together via a 3 bolts located in the
base of the case. Secure the overhead structure by
bolting the rear mullions tegether.
Do not use bolts
9. Apply bead of silicone to top of bulkheads and slip on
stainless steel bulkhead cap. Also apply silicone to
seam between overhead light tubes.
10. VERY IMPORTANT! Apply liberal amounts of
black silicone to area under interior lower legs and
fill all voids down to bulkhead.
11. Use finger to smooth silicone as thin as possible at
masking tape on inside and outside of rear mullion
(apply additional silicone if necessary). Remove tape
applied on line #3.
to pull cases together!
Rev. 0505
BOLT
SEALANT
BOLT
Figure 2
DO NOT SEAL JOINT TRIM TO FLOOR!
5
VGM, VGD-0505
Plumbing
It is the contractor's
responsibility to install
case(s) according to local
construction and health
codes.
WASTE OUTLET AND P-TRAP
The waste outlet is located off the center of the case on
one side allowing drip piping to be run lengthwise under
the fixture.
A 1-1/2" P-trap and threaded adapter are supplied with
each fixture. The P-trap must be installed to prevent air
leakage and insect entrance into the fixture.
NOTE: PVC-DWV solvent cement is recommended.
Follow the Hussmann’s instructions.
INSTALLING CONDENSATE DRAIN
Poorly or improperly installed condensate drains can
seriously interfere with the operation of this refrigerator,
and result in costly maintenance and product losses.
Please follow the recommendations listed below when
installing condensate drains to insure a proper installation:
T
1.
B
DRAIN
MECHANICAL
STUB UP AREA
19" X 19"
T-STAT AND BALLAST LOCATIONS
C
L
DRAIN
CASE FRONT
CASE FRONT
B
WATER,
ELEC. &
REFRIG.
MECHANICAL
STUB UP AREA
19" X 19"
1. Never use pipe for condensate drains smaller than
the nominal diameter of the pipe or P-trap supplied
with the case.
2. When connecting condensate drains, the P-trap must
be used as part of the condensate drain to prevent
air leakage or insect entrance. Store plumbing system
floor drains should be at least 14" off the center of
the case to allow use of the P-trap pipe section.
Never use two water seals in series in any one line.
Double P-traps in series will cause a lock and prevent
draining.
3. Always provide as much down hill slope (“fall”) as
possible; 1/8" per foot is the preferred minimum. PVC
pipe, when used, must be supported to maintain the
1/8" pitch and to prevent warping.
4. Avoid long runs of condensate drains. Long runs
make it impossible to provide the “fall” necessary for
good drainage.
5. Provide a suitable air break between the flood rim of
the floor drain and outlet of condensate drain. 1" is
ideal.
6. Prevent condensate drains from freezing:
a. Do not install condensate drains in contact with
non-insulated suction lines. Suction lines should
be insulated with a nonabsorbent insulation material such as Armstrong’s Armaflex.
b. Where condensate drains are located in dead air
spaces (between refrigerators or between a refrigerator and a wall), provide means to prevent
freezing. The water seal should be insulated to
prevent condensation.
6
Humidification
HUMIDIFICATION SYSTEM (WHERE APPLICABLE)
One contributor to spoilage of fresh meat and deli
products that are displayed in refrigerated service type
merchandisers is dehydration, which causes the product
to shrink and dry out. The humidification system is
designed to maintain a high relative humidity (RH) inside
Hussmann’s refrigerated service type merchandisers—
and minimize dehydration.
The humidification system is located on the back wall
under the rear discharge air grill of the VGM / VGD
FAMILY. It is imperative that the system be maintained as
per the instructions in the maintenance section. Buildup
of residue will cause leakage and/or unfavorable water
conditions. If the area’s water is hard, check the system
more frequently than under good water conditions.
INSTRUCTIONS
Tu rn on water and fans, and check for leaks. This system
has been tested at the factory, and should not require
any additional adjustments.
The system is constructed almost entirely of PVC pipe,
and user air that is sub-cooled to approximately the
same temperature as the case. The sub-cooling of air
inhibits the formation of growth found to be a problem
in other humidification systems. Maintenance is almost
unnecessary if you follow a few simple rules:
1. Keep the case clean.
2. Keep the water filter clean, and change it every 612 months, depending on the kind of water found
in your area.
3. Flush the header every 6 months, by loosening the
1/8" 100 X 1/8FPT
SW ADAPTER
225-01-3220
SPRAY HEADER
RUNS LENGTH OF CASE
HAGO-M1 NOZZLE
225-01-3221
1/4" 100 X 1/8FPT
SW ADAPTER
225-01-2089A
Rev. 0505
connecting “L”, remove it from the case, and
flushing with a hose.
IMPORTANT INFORMATION
The VGM / VGD case line is easy to work, and capable of
maintaining superb product quality with the installation
of the proper controlling devices. These should be set
according to the Hussmann’s specifications, and a properly maintained humidity system. Incorrect settings and
failure to maintain the humidity system will result in
short product life. Below are a few guidelines for optimum performance and product life:
• Set thermostat to cut in at 30º-32ºF discharge temperature, to maintain a temperature for Deli, Meat,
and Fish at 36ºF. DO NOT set temperature too cold,
as this causes product dehydration.
• Temperatures should be achieved by means of a T-Stat
and Suction Solenoid at each case. DO NOT use EPR
valves. Liquid Line Solenoids, or electronic control
devices of any kind. These controls allow temperature
swings that cause dehydration and excessive energy
consumption.
• Clean humidity system a minimum of every 90 days for
proper system operation.
• Work and rotate product - not to exceed a 4-hour
period.
• At night, turn off case lights, and cover product with
moistened cheese cloth or fabric towels.
• Keep meat prep room refrigerated at 55ºF.
• Meat Bloom Box (if applicable ) should be at 30ºF.
HUMIDITY SYSTEM as viewed from the front.
NOTE: The axial fans included in the humidity system
must be replaced as a unit. Humidity Out-Put - 1/2 gallon
per hour per nozzle. One (1) nozzle in all VGMs.
REAR INTERIOR WALL OF CASE
VIEWED FROM FRONT
WATER
SUPPLY
1/4"MPT X 1/4" OD
COMP ADAPTER
225-01-1312
BALL VALVE
HAMMON
225-01-2026
1/4"MPT X 1/4" COMP PVC ADAPTER
WATER FILTER
3 STAGE #00015
225-01-2026
225-01-2026
2ND FAN USED
IN 12' CASE
1/4" OD X 1/8" FPT
SW ADAPTER
225-01-3059
1/8" MPT X 1/4" COMP
PVC ADAP TER
225-01-3059
PAN AND ACCESS P ANEL
3" AXIAL FAN
225-01-2026
7
VGM, VGD-0505
Refrigeration
REFRIGERANT TYPE
The standard refrigerant will be R-22 unless otherwise
specified on the customer order. Check the serial plate
on the case for information.
REFRIGERATION LINES
LIQUID SUCTION
3/8" O.D. 5/8" O.D.
NOTE: The standard coil is piped at 5/8" (suction); however, the
store tie-in may vary depending on the number of coils
and the draw the case has. Depending on the case setup,
the connecting point in the store may be
5
/8", 7/8", or 11/8". Refer to the particular case you are
hooking up.
Refrigerant lines should be sized as shown on the
refrigeration legend furnished by the store.
Install P-traps (oil traps) at the base of all suction line
vertical risers.
Pressure drop can rob the system of capacity. To keep the
pressure drop to a minimum, keep refrigerant line run as
short as possible, using the minimum number of elbows.
Where elbows are required, use long radius elbows only.
CONTROL SETTINGS
See the “Case Specs” section of this guidebook for the
appropriate settings for your merchandiser. Maintain
these parameters to achieve near constant product
temperatures. Product temperature should be measured
first thing in the morning, after having been refrigerated
overnight. For all multiplexing, defrost should be time
terminated. Defrost times should as directed in the
Case Specifications section of this guide. The number of
defrosts per day should never change. The duration of
the defrost cycle may be adjusted to meet conditions
present at your location.
ACCESS TO TX VALVES & DRAIN LINES
MECHANICAL - Remove product from end of case.
Remove product racks. Remove refrigeration and drain
access panels (labeled). TX valve (mechanical only) and
drain are located under each access panel at end of the
case.
ELECTRONIC - The Electronic Expansion valve master
and slave cylinder(s) are located within the electrical
access panel(s).
ELECTRONIC EXPANSION VALVE
(OPTIONAL)
A wide variety of electronic expansion valves and case
controllers can be utilized. Please refer to EEV and
controller Hussmanns information sheet. Sensors for
electronic expansion valves will be installed on the coil
inlet, coil outlet, and in the discharge air. (Some supermarkets require a 4th sensor in the return air). Case
controllers will be located in the electrical raceway or
under the case
8
THERMOSTATIC EXPANSION VALVE LOCATION
This device is located on the same side as the refrigeration stub. An ALCO expansion valve model is furnished
as standard equipment, unless otherwise specified by
customer.
EXPANSION VALVE ADJUSTMENT
There is one (1) valve on the right side of each coil.
MEASURING THE OPERATING SUPERHEAT
1. Determine the suction pressure with an accurate
pressure gauge at the evaporator outlet.
2. From a refrigerant pressure temperature chart, determine the saturation temperature at the observed
suction pressure.
3. Measure the temperature of the suction gas at the
thermostatic remote bulb location.
4. Subtract the saturation temperature obtained in step
No. 2 from the temperature measured in step No. 3.
5. The difference is superheat.
6. Set the superheat for 5°F - 7°F.
T-STAT LOCATION
T-Stats are located within the electrical raceway. Refer to
diagram below.
T
SELF CONTAINED CASES
B
DRAIN
MECHANICAL
STUB UP AREA
19" X 19"
T-STAT AND BALLAST LOCATIONS
C
L
DRAIN
CASE FRONT
CASE FRONT
B
WATER,
ELEC. &
REFRIG.
MECHANICAL
STUB UP AREA
19" X 19"
The only difference between a remote case and a selfcontained case is the addition of a condensing unit.
SELF CONTAINED START-UP
Self contained cases are totally ready to run once power
is supplied. All controls are set and units charged with
refrigerant.
DEFROST SET-UP
Defrost times vary according to case model - refer to
Case specification section in the back of the book for
proper duration and frequency. Self contained cases have
individual defrost time clocks. When power has been
applied, set the time clock to the proper duration and
frequency.
The time clock is located behind the front panel under
the case. Turn the clock dial counterclockwise until the
pointer is directed to the current time of day.
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