U-Line UHNB315 Installation manual

USER GUIDE & SERVICE MANUAL
3 Class ●UHNB315 / UHNP315 ●15” Nugget Ice Machine

USER GUIDE
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Contents
SAFETY • INSTALLATION & INTEGRATION • OPERATING INSTRUCTIONS • MAINTENANCE • SERVICE
Intro
Safety
Safety and Warning
Disposal And Recycling
Installation
Environmental Requirements
Electrical
Side by Side Installation
Water Hookup
Drain
Anti-Tip Bracket
General Installation
Door Swing
Door Adjust
Operating Instructions
First Use
Control Operation
Ice
Airflow and Product Loading
Maintenance
Cleaning
Cleaning Condenser
Extended Non-Use
Service
Quick Guide
Troubleshooting
Wire Diagram
Reference Diagrams
Product Liability
Warranty Claims
Parts
Ordering Replacement Parts
R600a Specifications
System Diagnosis Guide
Compressor Specifications
Troubleshooting Extended
Control Operation - Service
Thermistor
Warranty

USER GUIDE
Introduction
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WELCOME TO U-LINE
Congratulations on your U-Line purchase. Your product comes from a company with over five decades of premium modular
ice making, refrigeration, and wine preservation experience. U-Line continues to be the American leader, delivering versatility
and flexibility for multiple applications including residential, light commercial, outdoor and marine use. U-Line’s complete
product collection includes Wine Captain® Models, Beverage Centers, Clear Ice Machines, Nugget Ice Machines, Crescent Ice
Makers, Glass & Solid Door Refrigerators, Drawer Models, Freezers, Combo® Models, and more.
U-Line has captivated those with an appreciation for the finer things with exceptional functionality, style, inspired innovations
and attention to even the smallest details. We are known and respected for our unwavering dedication to product design,
quality and selection. U-Line is headquartered in Milwaukee, Wisconsin and has shipped product to five continents for over
two decades and is proud to have the opportunity to ship to you.
PRODUCT INFORMATION
Looking for additional information on your product? User Guides, Spec Sheets, CAD Drawings, Compliance Documentation,
and Product Warranty information are all available for reference and download at u-line.com.
PROPERTY DAMAGE / INJURY CONCERNS
In the unlikely event property damage or personal injury is suspected related to a U-Line product, please take the following
steps:
1. U-Line Customer Care must be contacted immediately at +1.800.779.2547.
2. Service or repairs performed on the unit without prior written approval from U-Line is not permitted. If the unit has been
altered or repaired in the field without prior written approval from U-Line, claims will not be eligible.
GENERAL INQUIRIES
U-Line Corporation
8900 N. 55th Street
Milwaukee, Wisconsin 53223 USA
Monday - Friday 8:00 am to 4:30 pm CST
T: +1.414.354.0300
F: +1.414.354.7905
Email: [e-mail]
u-line.com
SERVICE & PARTS ASSISTANCE
Monday - Friday 8:00 am to 4:30 pm CST
T: +1.800.779.2547
F: +1.414.354.5696
Service Email: [e-mail]
Parts Email: [e-mail]
CONNECT WITH US
Designed, engineered and assembled in WI, USA
3

USER GUIDE
Safety and Warning
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Safety and Warning
NOTICE
Please read all instructions before installing,
operating, or servicing the appliance.
Use this appliance for its intended purpose only and follow
these general precautions with those listed throughout this
guide:
SAFETY ALERT DEFINITIONS
Throughout this guide are safety items labeled with a
Danger, Warning or Caution based on the risk type:
DANGER
!
Danger means that failure to follow this safety
statement will result in severe personal injury or
death.
WARNING
!
Warning means that failure to follow this safety
statement could result in serious personal injury
or death.
CAUTION
!
Caution means that failure to follow this safety
statement may result in minor or moderate
personal injury, property or equipment damage.
DANGER
!
This unit contains R600a (Isobutane) which is a
flammable hydrocarbon. It is safe for regular
use. Do not use sharp objects to expedite
defrosting. Do not service without consulting the
“R600a specifications” section included in the
User Guide. Do not damage the refrigerant
circuit.
WARNING
!
Service must be done by factory authorized
service personnel. Any parts shall be replaced
with like components. Failure to comply could
increase the risk of possible ignition due to
incorrect parts or improper service.
CALIFORNIA PROPOSITION 65
This product contains chemicals known to the
state of California to cause cancer and birth
defects or other reproductive harm.
www.P65warnings.CA.gov
4

USER GUIDE u-line.com
Disposal and Recycling
Disposal and Recycling
RISK OF CHILD ENTRAPMENT. Before you throw
away your old refrigerator or freezer, take o
the doors and leave shelves in place so children
may not easily climb inside.
If the unit is being removed from service for disposal,
check and obey all federal, state, and local regulations
regarding the disposal and recycling of refrigeration
appliances, and follow these steps completely:
1. Remove all consumable contents from the unit.
2. Unplug the electrical cord from its socket.
3. Remove the door(s)/drawer(s).
DANGER
!
5

USER GUIDE
Environmental Requirements
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Environmental Requirements
This model is intended for indoor/interior applications only
and is not to be used in installations that are open/
exposed to natural elements.
This unit is designed to operate between 50°F (10°C) and
100°F (38°C). Higher ambient temperatures may reduce
the unit’s ability to reach low temperatures and/or reduce
ice production on applicable models.
For best performance, keep the unit out of direct sunlight
and away from heat generating equipment.
In climates where high humidity and dew points are
present, condensation may appear on outside surfaces.
This is considered normal. The condensation will
evaporate when the humidity drops.
CAUTION
!
Damages caused by ambient temperatures of
40°F (4°C) or below are not covered by the
warranty.
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USER GUIDE
Electrical
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Electrical
WARNING
!
SHOCK HAZARD — Electrical Grounding
Required. Never attempt to repair or perform
maintenance on the unit until the electricity has
been disconnected.
Never remove the round grounding prong from
the plug and never use a two-prong grounding
adapter.
Altering, cutting or removing power cord,
removing power plug, or direct wiring can cause
serious injury, fire, loss of property and/or life,
and will void the warranty.
Never use an extension cord to connect power to
the unit.
Always keep your working area dry.
NOTICE
Electrical installation must observe all state and
local codes. This unit requires connection to a
grounded (three-prong), polarized receptacle
that has been placed by a qualified electrician.
The unit requires a grounded and polarized 115 VAC,
60 Hz, 15A power supply (normal household current). An
individual, properly grounded branch circuit or circuit
breaker is recommended. A GFCI (ground fault circuit
interrupter) is usually not required for fixed location
appliances and is not recommended for your unit because
it could be prone to nuisance tripping. However, be sure
to consult your local codes.
See CUTOUT & PRODUCT DIMENSIONS for recommended
receptacle location.
7

USER GUIDE
Side-by-Side Installation
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Side-by-Side Installation
OTHER SITE REQUIREMENTS
Side-by-Side Installation
Units must operate from separate, properly grounded
electrical receptacles placed according to each unit’s
electrical specifications requirements.
Cutout width for a side-by-side installation is the total of
the widths listed under Cutout Dimensions in each unit’s
Installation Guide. Each door can be opened individually
(one at a time) without interference.
However, to ensure unobstructed door swing (opening
both doors at the same time), 1/4" (6.4 mm) of space
needs to be maintained between the units.
Hinge-by-Hinge Installation (Mullion)
When installing two units hinge-by-hinge, 13/16" (22 mm)
is required for integrated models. Additional space may be
needed for any knobs, pulls or handles installed.
Stainless steel models which include the standard stainless
handle will require 4-9/16" (116 mm) to allow both doors
to open to 90° at the same time.
1/4" (6 mm)
13/16" (22 mm)
4-9/16" (116 mm)
8

USER GUIDE
Water Hookup
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Water Hookup
PREPARE PLUMBING
The water valve uses a standard 1/4" (6.35 mm)
compression fitting. U-Line recommends using accessory
water hook up kit – part # 80-54674-00. The kit includes a
10' (3 m) braided flexible water supply line and a brass
hose fitting.
CAUTION
!
Plumbing installation must observe all state and
local codes. All water and drain connections
MUST BE made by a licensed/qualified plumbing
contractor. Failure to follow recommendations
and instructions may result in damage and/or
harm.
Water Supply Connection
When connecting the water supply, please note the
following:
• Before installing the unit and connecting to the cold
water supply, review the local plumbing codes.
• The water pressure should be between 20 and 120 psi
(138 and 827 kPa).
• The water line MUST have a shut-off valve in the
supply line.
• The water line should be looped into 2 coils. This will
allow the unit to be removed for cleaning and servicing.
Make certain that the tubing is not pinched or damaged
during installation.
WARNING
!
Connect to potable water supply only.
CAUTION
!
Do not use any plastic water supply line. The line
is under pressure at all times. Plastic may crack
or rupture with age and cause damage to your
home.
Do not use tape or joint compound when
attaching a braided flexible water supply line
that includes a rubber gasket. The gasket
provides an adequate seal – other materials
could cause blockage of the valve.
Failure to follow recommendations and
instructions may result in damage and/or harm,
flooding or void the product warranty.
Use new hose set. Do not reuse old hose set.
CAUTION
!
Turn off water supply and disconnect electrical
supply to unit prior to installation.
Use caution when handling back panel. The
edges could be sharp.
9

USER GUIDE
Water Hookup
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3
4
1. Turn off water supply and disconnect electrical supply to
product prior to attempting installation.
2. Remove the back panel.
3. Thread water line through back panel hole (with
bushing).
4. Locate water valve inlet and connect to valve.
5. Turn on water supply and check for leaks.
6. Reinstall back panel.
10

USER GUIDE
Drain
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Drain
Model numbers including “CL” or “NB” do not include a
factory installed drain pump.
Model numbers including “CP” or “NP” include a factory
installed drain pump.
DRAIN CONNECTION
CAUTION
!
If your U-Line unit did not come with a factory
installed drain pump you must use a gravity
style drain connection. For assistance in
determining if your unit has a pump please
contact U-Line. The floor drain must be large
enough to accommodate drainage from all
attached drains. Follow these guidelines when
installing drain lines to prevent water from
flowing back into the ice maker storage bin and/
or potentially flowing onto the floor, which may
result in personal injury or property damage.
NOTICE
Drain can NOT be located directly below the unit.
Unit has a solid base that will not allow the unit
to drain below itself.
There is a possibility that hose connections may
have loosened during shipment.
Verify all connections and fittings are free from
leaks.
GRAVITY DRAIN
A gravity drain may be used if:
Drain line has at least a 1" drop per 48" (approximately
2 cm drop per 100 cm) of run.
Drain line does not create traps and is vented per local
code.
1. Cut the pre-installed drain tube to length.
2. Connect to your local plumbing per the local code.
3. If necessary, insulate drain line to prevent
condensation.
CAUTION
!
Failure to connect water supply or drain line
connections properly can result in personal
injury and property damage. Gravity drain
connections must be routed downward from the
rest of the unit at the rate of 1/4" per foot (1 cm
per 50 cm).
Normal
Proper Drain
With Trap
Poor Drainage, Water Will Back Up
With Trap and Vent
Proper Drain
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USER GUIDE
Drain
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FACTORY INSTALLED DRAIN PUMP
If your drain line will run up to a stand pipe, disposal or
spigot assembly, or does not otherwise meet the
requirements for a gravity drain, you may have ordered a
pre-installed U-Line P60 drain pump.
If you need to install a P60 drain pump into your unit, see
DRAIN PUMP section in the User Manual.
See below for typical installations requiring a drain pump.
NOTICE
The maximum lift for the P60 drain pump is
10 feet. This must be done as close to the rear of
the unit as possible.
Cold
Water
Hot
Water
Waste
Waste
6KXW2ɞ
Valve
Stand Pipe
P60 Pump Required
Air Gap
(Optional Hook-Up)
Cold
Water
Hot
Water
Waste
6KXW2ɞ
Valve
Disposal Assembly
P60 Pump Required
Waste
Cold
Wate
r
6KXW2ɞ
Valve
Hot
Water
Air Gap
(Optional Hook-Up)
Y-Branch Tailpiece
P60 Pump Required
12

USER GUIDE u-line.com
Anti-Tip Bracket
Anti-Tip Bracket
Use one of the methods below to secure the unit
CABINET/COUNTER ANTI-TIP INSTALLATION
(For built-in applications)
1. Slide unit out so screws on front of unit are easily
accessible.
2. Remove the two screws from the front of the unit.
3. Bend bracket along one of the perforations to allow
attachment to the desired adjoining surface.
4. Gently push unit into position. Be careful not to
entangle the electrical cord or water line, if applicable.
5. Check to be sure the unit is level from front to back
and side to side. Make any necessary adjustments.
The unit’s top surface should be approximately ”
(3 mm) below the countertop.
6. Secure bracket to adjoining surface.
FLOOR MOUNTED ANTI-TIP INSTALLATION
(For free-standing applications)
1. Locate two anti-tip brackets included with the kit.
2. Place the unit into the area where it will be installed.

test to make sure the door opens and closes freely.
3. 

center of the unit.
4. Remove the unit. Using a square, extend center line
“B” (see chart below). This line serves as the back
edge for the anti-tip brackets. From the center line,

edge of each bracket.
C
L
Back wall
Back of unit
Front of unit
Surrounding
area (Top view)
AA
B
515 518 524
A7  9” 11 ”
B22” 22” 22”
5. 
drawn for the outer edge. Mark spots for the screw
holes.
C
L
Surrounding
area (Top view)
Drill holes and
mount anti-tip
brackets to floor Back wall
Front
of
unit
Back
of
unit
AA
B
6. Use a 1/8” drill to make two starter holes and fasten

provided.
7. Place the unit back into position, making sure the
feet engage the anti-tip brackets properly. Check

3 with the position of the front feet to ensure proper
positioning.
13

USER GUIDE
General Installation
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General Installation
LEVELING INFORMATION
1. Use a level to
confirm the unit is
level. Level should
be placed along top
edge and side edge
as shown.
2. If the unit is not level, adjust the legs on the corners of
the unit as necessary.
3. Confirm the unit is level after each adjustment and
repeat the previous steps until the unit is level.
INSTALLATION TIP
If the room floor is higher than the floor in the cutout
opening, adjust the rear legs to achieve a total unit rear
height of 1/8" (3 mm) less than the opening’s rear height.
Shorten the unit height in the front by adjusting the front
legs. This allows the unit to be gently tipped into the
opening. Readjust the front legs to level the unit after it is
correctly positioned in the opening.
INSTALLATION
1. Plug in the power/electrical cord.
2. Gently push the unit into position. Be careful not to
entangle the cord or water and drain lines, if
applicable.
3. Re-check the leveling, from front to back and side to
side. Make any necessary adjustments. The unit’s top
surface should be approximately 1/8" (3 mm) below
the countertop.
4. Install the anti-tip bracket.
5. Remove interior packing material and wipe out the
inside of the unit with a clean, water-dampened cloth.
1
Turn to Adjust
14

USER GUIDE
Door Swing
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Door Swing
For Integrated models that are installed adjacent to a wall,
1/2" (13 mm) clearance is recommended from wall on
hinge side to allow the door to open 90°. Allow for
additional space for any knobs or pulls installed on the
integrated panel/frame.
Stainless Steel models that are installed adjacent to a wall
require 2-1/4" (57 mm) door clearance on hinge side to
allow for door handle.
Units have a zero clearance when installed adjacent to
cabinets.
Wall
Wall
90°
Door Swing
90°
Door Swing
Space Required
For any Knobs or Pulls
2-1/4" MIN
(57 mm MIN)
Integrated
Stainless
1/2" (13 mm)
15

USER GUIDE u-line.com
Door Adjustments
Door Adjustments
DOOR ALIGNMENT AND ADJUSTMENT
Align and adjust the door if it is not level or not sealing
properly. If the door is not sealed, the unit may not cool
properly, or excessive frost or condensation may form in
the interior.
NOTICE
Properly aligned, the door’s gasket should be
rmly in contact with the cabinet all the way
around the door (no gaps). Carefully examine the
door’s gasket to ensure that it is rmly in contact
with the cabinet. Also make sure the door gasket
is not pinched on the hinge side of the door.
Do not attempt to use the door to raise or pivot
your unit. This would put excessive stress on the
hinge system.
Alignment and Adjustment Procedure
1. Open door and remove gasket near the hinges.
2. Using a T-25 Torx bit, loosen each pair of Torx head
screws both the upper and lower hinge plates.
3. Square and align door as necessary.
4. Tighten Torx head screws on hinge.
5. Reinstall gasket into the channel starting at the corner.
REVERSING THE DOOR
1. Open door.
2. Using T-25 Torx bit loosen screw #1 and remove screw
#2 on top and bottom hinge. Slide and remove the
door from the unit.
Note: One hinge includes a metal spacer. Spacer
must be used with that hinge when reversing the
door.
3. Remove caps from screw heads on opposite side (2 on
top and 2 on bottom). Using #2 Phillips bit, remove
the 4 underlying screws. Reinstall the screws and caps
on the opposite side.
4. Partially install screw #1 in the outer most holes on
top and bottom. Rotate door 180o, align hinge over
screw #1 and slide/seat into position. Reinstall screw
#2 on top and bottom. Tighten both screws and install
hinge cover.
Align and adjust the door:
Align and adjust the door (see DOOR ALIGNMENT AND
ADJUSTMENT).
T-25 Torx Screw
T-25 Torx Screw
2
1
CAUTION
!
16

USER GUIDE
First Use
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First Use
Initial startup requires no adjustments. See CONTROL
OPERATION section for more details.
NOTICE
U-Line recommends discarding the ice produced
during the first two to three hours of operation
to avoid possible dirt or scale that may dislodge
from the water line.
When plugged in, the unit will begin operating under the
factory default settings. If the unit was turned off during
installation, simply press and the unit will immediately
switch on. To turn the unit off, press and release.
17

USER GUIDE
Control Operation
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Control Operation
CONTROL FUNCTION GUIDE
FUNCTION COMMAND NOTES
ON/OFF Press and release Unit will immediately turn ON or OFF
Adjust ice density See “Ice” section
Adjust light color While holding press and release to
scroll through lighting options
Option Open Door
00 White
0 1 Blue
02 White
Enable Sabbath Mode Press and hold for 5 seconds and
release
The oF / oC symbol will flash briefly after 5 seconds.
Interior light and display will go dark and remain so
until user resets mode - unit continues to operate
Disable Sabbath Mode Press and release Display and interior light return to normal operation
Clean Mode See “Cleaning” section
This unit is Star-K certified. See www.star-k.org for more details.
DOOR ALERT NOTIFICATION
When the door is left open for more than 30 minutes:
• Ice production will cease
• An tone will sound for several seconds every minute
• will appear in display
Close door to silence alert and reset (Ice production will resume if bin sensor is not satisfied)
18

USER GUIDE
Ice
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Ice
The Nugget Ice Machine produces cylindrical bits of
compressed ice approximately 3/4” x 1/2”.
Ice is produced until the machine senses the bin is full. As
ice slowly melts in the bin, the level of ice drops and ice
production resumes. This ensures a constant supply of
fresh ice is always available.
The factory default ice setting is 0, which produces a firm
and compact ice nugget. U-Line’s exclusive U-Choose™
ice adjustability feature allows you five levels of
adjustment from 0 to -5. At -5 the ice is soft and
chewable.
To adjust the ice density:
1. Hold for 5 seconds - display will flash current ice
setting
2. Adjust using or
3. Confirm setting by pressing
19

USER GUIDE
Airflow and Product Loading
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Airflow and Product Loading
NOTICE
The unit requires proper airflow to perform at its
highest efficiency. Do not block the front grille at
any time, or the unit will not perform as
expected. Do not install the unit behind a door.
20