Hoshizaki KMD-860MRJZ User manual

Models
KMD-860MRJZ
Modular Crescent Cuber
Instruction Manual
Issued: 11-15-2021
hoshizakiamerica.com

2
WARNING
Only qualied service technicians should install and service the appliance. To
obtain the name and phone number of your local Hoshizaki Certied Service
Representative, visit www.hoshizaki.com. No installation or service should be
undertaken until the technician has thoroughly read this Instruction Manual.
Likewise, the owner/manager should not proceed to operate the appliance until the
installer has instructed them on its proper operation. Failure to install, operate, and
maintain the appliance in accordance with this manual will adversely affect safety,
performance, component life, and warranty coverage and may result in costly water
damage. Proper installation is the responsibility of the installer. Product failure or
property damage due to improper installation is not covered under warranty.
Hoshizaki provides this manual primarily to assist qualied service technicians in the
installation, maintenance, and service of the appliance.
Should the reader have any questions or concerns which have not been satisfactorily
addressed, please call, send an e-mail message, or write to the Hoshizaki Technical
Support Department for assistance.
Phone: [phone]
Fax: [phone]
E-mail: [email protected]
618 Highway 74 South
Peachtree City, GA 30269
Attn: Hoshizaki Technical Support Department
NOTE: To expedite assistance, all correspondence/communication MUST include the
following information:
• Model Number
• Serial Number
• Complete and detailed explanation of the problem.

3
IMPORTANT
This manual should be read carefully before the appliance is installed and operated.
Read the warnings and guidelines contained in this manual carefully as they
provide essential information for the continued safe use and maintenance of the
appliance. Retain this manual for any further reference that may be necessary.
CONTENTS
Important Safety Information ................................................................................................. 4
I. Specications...................................................................................................................... 6
A. Electrical and Refrigerant Data ..................................................................................... 6
B. Dimensions/Connections .............................................................................................. 7
1. Air-Cooled Models (MAJ) ......................................................................................... 7
2. Water-Cooled Models (MWJ)................................................................................... 8
3. Remote Models (MRJZ)........................................................................................... 9
4. Remote Condenser Unit URC-9FZ (use with KMD-860MRJZ) ............................. 10
II. Installation and Operating Instructions .............................................................................11
A. Location .......................................................................................................................11
B. Checks Before Installation............................................................................................11
C. How to Remove Panels............................................................................................... 12
D. Setup........................................................................................................................... 13
E. Electrical Connection .................................................................................................. 14
F. Water Supply and Drain Connections .......................................................................... 15
1. Icemaker ................................................................................................................ 16
2. Water-Cooled Condenser....................................................................................... 17
a) Connection to an Open Drain System ................................................................ 17
b) Connection to a Closed Loop System ................................................................ 18
G. Installation of Remote Condenser Unit for Remote Models ........................................ 19
1. Location ................................................................................................................. 19
2. Checks Before Installation ..................................................................................... 20
3. Setup ..................................................................................................................... 20
4. Line Set Size and Refrigerant Charge ................................................................... 20
5. Line Set Installation ............................................................................................... 21
6. Electrical Connection............................................................................................. 23
7. Stacking Remote Condenser Unit .......................................................................... 24
H. Final Checklist............................................................................................................. 25
1. Pre-Startup............................................................................................................. 25
2. Post-Startup........................................................................................................... 26
I. Startup.......................................................................................................................... 27
III. Maintenance ................................................................................................................... 28
A. Maintenance Schedule................................................................................................ 28
B. Cleaning and Sanitizing Instructions ........................................................................... 29
IV. Preparing the Icemaker for Periods of Non-Use ............................................................. 33
V. Disposal ........................................................................................................................... 35

4
Important Safety Information
Throughout this manual, notices appear to bring your attention to situations which could
result in death, serious injury, damage to the appliance, or damage to property.
WARNING Indicates a hazardous situation which could result in death or
serious injury.
NOTICE Indicates a situation which could result in damage to the
appliance or property.
IMPORTANT Indicates important information about the installation, use, and
care of the appliance.
WARNING
The appliance should be destined only to the use for which it has been expressly
conceived. Any other use should be considered improper and therefore dangerous.
The manufacturer cannot be held responsible for injury or damage resulting
from improper, incorrect, and unreasonable use. Failure to install, operate, and
maintain the appliance in accordance with this manual will adversely affect safety,
performance, component life, and warranty coverage and may result in costly water
damage.
To reduce the risk of death, electric shock, serious injury, or re, follow basic
precautions including the following:
• Only qualied service technicians should install and service the appliance.
• The appliance must be installed in accordance with applicable national, state, and
local codes and regulations.
• Electrical connection must be hard-wired and must meet national, state, and local
electrical code requirements. Failure to meet these code requirements could result
in death, electric shock, serious injury, re, or damage.
• The icemaker requires an independent power supply of proper capacity. See the
nameplate for electrical specications. Failure to use an independent power supply
of proper capacity can result in a tripped breaker, blown fuse, damage to existing
wiring, or component failure. This could lead to heat generation or re.
• THE ICEMAKER MUST BE GROUNDED. Failure to properly ground the icemaker
could result in death or serious injury.
• To reduce the risk of electric shock, do not touch the control switch with damp
hands.
• Move the control switch to the "OFF" position and turn off the power supply before
servicing. Lockout/Tagout to prevent the power supply from being turned back on
inadvertently.
• Do not make any alterations to the appliance. Alterations could result in electric
shock, injury, re, or damage.
• The appliance is not intended for use by persons (including children) with reduced
physical, sensory, or mental capabilities, or lack of experience and knowledge,
unless they have been given supervision or instruction concerning use of the
appliance by a person responsible for their safety.

5
WARNING, continued
• Children should be properly supervised around the appliance.
• Do not climb, stand, or hang on the appliance or allow children or animals to do so.
Serious injury could occur or the appliance could be damaged.
• Do not use combustible spray or place volatile or ammable substances near the
appliance. They might catch re.
• Keep the area around the appliance clean. Dirt, dust, or insects in the appliance
could cause harm to individuals or damage to the appliance.
Additional Warning for Remote Models
• THE REMOTE CONDENSER UNIT MUST BE GROUNDED. The power supply and
ground connection to the remote condenser unit are supplied from the icemaker.
Failure to properly ground the remote condenser unit could result in death or
serious injury.
• Wire routing (conduit) and disconnect (if required) must meet national, state, and
local electrical code requirements. Failure to meet these code requirements could
result in death, electric shock, serious injury, re, or damage.
NOTICE
• Follow the water supply, drain connection, and maintenance instructions carefully to
reduce the risk of costly water damage.
• In areas where water damage is a concern, install in a contained area with a oor
drain.
• Install the icemaker in a location that stays above freezing. Normal operating
ambient temperature must be within 45°F to 100°F (7°C to 38°C).
• Do not leave the icemaker on during extended periods of non-use, extended
absences, or in sub-freezing temperatures. To properly prepare the icemaker for
these occasions, follow the instructions in "IV. Preparing the Icemaker for Periods of
Non-Use."
• Do not place objects on top of the appliance.
• The dispenser unit/ice storage bin is for ice use only. Do not store anything else in
the dispenser unit/ice storage bin.

6
I. Specications
A. Electrical and Refrigerant Data
The rating label and nameplate provide electrical and refrigerant data. The rating label
can be seen by removing the front panel. The nameplate is located on the rear panel. For
certication marks, see the nameplate.
We reserve the right to make changes in specications and design without prior notice.
1. KMD-860M_J(Z)
Single Phase
Model Number KMD-860MAJ KMD-860MWJ KMD-860MRJZ
AC Supply Voltage 208-230/60/1 208-230/60/1 208-230/60/1
Compressor 208-230V 7.7RLA 46LRA 208-230V 7.2RLA 46LRA 208-230V 8.2RLA 56LRA
Pump 120V 0.5FLA 60W 120V 0.5FLA 60W 120V 0.5FLA 60W
Fan 120V 1.0FLA (TOTAL)
1/15HP
--- --- --- 120V 3A MAX (Fan in URC)
Other 115-120V 0.8A 115-120V 0.8A 115-120V 0.15A
Maximum Fuse Size 20 AMPS 20 AMPS 20 AMPS
Max. HACR Breaker
(USA Only)
20 AMPS 20 AMPS 20 AMPS
Max. Circuit Breaker
(Canada Only)
20 AMPS 20 AMPS 20 AMPS
Minimum Circuit
Ampacity
20 AMPS 20 AMPS 20 AMPS
Design Pressure HI-467PSI LO-230PSI HI-427PSI LO-230PSI HI-467PSI LO-230PSI
Refrigerant 404A 2 LB. 6.8 OZ. 404A 1 LB. 12.2 OZ. 404A
Total Refrigerant Charge with
Hoshizaki Remote Condenser
Unit URC-9FZ: 9 LB. 14.8 OZ.

7
B. Dimensions/Connections
1. Air-Cooled Models (MAJ) Units: mm [in.]
Rear
Side
Bottom
Model Shown: KMD-860MAJ
Model Shown: KMD-860MAJ
Model Shown: KMD-860MAJ
NOTICE
• Allow 6" (15 cm) clearance at rear,
sides, and top for proper air circulation
and ease of maintenance and/or
service should they be required.
• The storage bin opening must
match the bottom opening as in the
illustration.
KMD-860MAJ
A768 [30-1/4]
B762 [30]
C80 [3-1/8]
D713 [28-1/8]
E662 [26-1/8]
F660 [26]
G170 [6-3/4]
H28 [1-1/8]
I14 [1/2]
J499 [19-5/8]

8
2. Water-Cooled Models (MWJ)
Units: mm [in.]
Rear
Side
Bottom
Model Shown: KMD-860MWJ
Model Shown: KMD-860MWJ
Model Shown: KMD-860MWJ
NOTICE
• Allow 6" (15 cm) clearance at rear,
sides, and top for proper air circulation
and ease of maintenance and/or
service should they be required.
• The storage bin opening must
match the bottom opening as in the
illustration.
KMD-860MWJ
A768 [30-1/4]
B762 [30]
C80 [3-1/8]
D713 [28-1/8]
E662 [26-1/8]
F660 [26]
G176 [6-7/8]
H28 [1-1/8]
I14 [1/2]
J499 [19-5/8]
K394 [15-1/2]
L53 [2-1/8]
M132 [5-1/4]
N179 [7]

9
3. Remote Models (MRJZ)
Units: mm [in.]
Rear
Side
Bottom
Model Shown: KMD-860MRJZ
Model Shown: KMD-860MRJZ
Model Shown: KMD-860MRJZ
NOTICE
• Allow 6" (15 cm) clearance at rear,
sides, and top for proper air circulation
and ease of maintenance and/or
service should they be required.
• The storage bin opening must
match the bottom opening as in the
illustration.
KMD-860MRJZ
A768 [30-1/4]
B762 [30]
C80 [3-1/8]
D713 [28-1/8]
E640 [25-1/4]
F660 [26]
G170 [6-3/4]
H28 [1-1/8]
I14 [1/2]
J499 [19-5/8]
KData Pending
LData Pending
MData Pending
N73 [2-7/8]
DATA PENDING

10
4. Remote Condenser Unit URC-9FZ (use with KMD-860MRJZ)
295
[11.6]
80
[3.15]
Units: mm [in.]
Rear
Top
Icemaker Model
URC-9FZ Heat of Rejection
AT 90°F (32°C)
WT 70°F (21°C)
KMD-860MRJZ 11,200 BTU/hr
NOTICE
Allow 24" (61cm) clearance at front
and rear for proper air circulation and
ease of maintenance and/or service
should they be required.

11
II. Installation and Operating Instructions
WARNING
• The appliance must be installed in accordance with applicable national, state, and
local codes and regulations.
• Failure to install, operate, and maintain the appliance in accordance with this
manual will adversely affect safety, performance, component life, and warranty
coverage and may result in costly water damage.
• CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews
are securely in place after installation. Make sure that none have fallen into the
dispenser unit/ice storage bin.
A. Location
NOTICE
• The icemaker is not intended for outdoor use. Normal operating ambient
temperature must be within 45°F to 100°F (7°C to 38°C); Normal operating
water temperature must be within 45°F to 90°F (7°C to 32°C). Operation of the
icemaker, for extended periods, outside of these normal temperature ranges may
affect icemaker performance.
• The icemaker will not work at sub-freezing temperatures. To prevent damage
to the water supply line, drain the icemaker if the air temperature is going to go
below 32°F (0°C). See "IV. Preparing the Icemaker for Periods of Non-Use."
• The icemaker should not be located next to ovens, grills, or other high heat producing
equipment.
• Allow 6" (15 cm) clearance at rear, sides, and top for proper air circulation and ease of
maintenance and/or service should they be required.
• The location should provide a rm and level foundation for the equipment.
B. Checks Before Installation
• Visually inspect the exterior of the shipping container and immediately report any
damage to the carrier. Upon opening the container, any concealed damage should also
be immediately reported to the carrier.
• Remove the shipping carton, tape, and packing material. If any are left in the appliance,
it will not work properly.
• See the nameplate on the rear panel, and check that your voltage supplied corresponds
with the voltage specied on the nameplate.
• Remove the panels to prevent damage when installing the appliance. See "II.C. How to
Remove Panels."
• Remove the package containing the accessories.
• Remove the protective plastic lm from the panels. If the appliance is exposed to the
sun or to heat, remove the lm after the appliance cools.

12
• Check that the refrigerant lines do not rub or touch lines or other surfaces, and that the
fan blade (if applicable) turns freely.
• Check that the compressor is snug on all mounting pads.
• The icemaker can be installed on a dispenser unit or ice storage bin. The ice storage
bins listed below are recommended.
Model Number Bin Width Recommended Hoshizaki Ice Storage Bin
KMD-860M_J(Z) 30" or Wider B-500 Series
For further options, contact your local Hoshizaki distributor.
• NOTICE! Remote models must be connected to an appropriate remote condenser
unit. The remote condenser unit listed below is recommended. Connection to a
different remote condenser unit will void the warranty unless Hoshizaki approves
a different remote condenser unit for your specic application. For further
details, contact your local Hoshizaki distributor.
Model Number Recommended Hoshizaki Remote Condenser Unit
KMD-860MRJZ URC-9FZ
C. How to Remove Panels
See Fig. 1
• Front Panel: Remove the screw. Lift up and
towards you.
• Top Panel: Lift up at front slightly, push rearward
and lift off.
• Right Side Panel: Remove the screw. Slide forward
slightly and lift off.
• Insulation Panel: Remove the thumbscrew. Lift up
slightly and pull towards you.
Fig. 1
Model Shown: KMD-860MWJ
Insulation
Panel
Screw
Right
Side
Panel
Screw
Top Panel
Front Panel
Thumbscrew

13
D. Setup
WARNING
The installer must ensure the dispenser unit/ice storage bin is compatible with
the icemaker, and the dispenser unit/ice storage bin and icemaker are properly
attached and secured.
1a) Dispenser Unit: Follow the dispenser unit's setup procedure.
1b) Ice Storage Bin: Unpack the ice storage bin and attach the 4 adjustable legs provided
(bin accessory) to the bottom of the ice storage bin.
2) Position the dispenser unit/ice storage bin in its permanent location.
3) If required, install an adapter kit or top kit. Contact your local Hoshizaki distributor for
recommendations.
4) Level the dispenser unit/ice storage bin in both the left-to-right and front-to-rear
directions. Ifusing an ice storage bin, adjust the ice storage bin legs to level.
5) Place the icemaker on top of the dispenser unit/ice storage bin.
6a) Dispenser Unit: Follow the dispenser unit, adapter kit, or top kit instructions for
securing the icemaker. If no instructions are available, secure the icemaker using the
mounting brackets provided. Rotate the mounting brackets so that they t ush to the
dispenser unit. SeeFig.2a. Secure the mounting brackets to the icemaker with the bolts
provided. Secure the mounting brackets to the dispenser unit with self-tapping screws
(not provided). NOTICE! Use care to avoid damage to dispenser unit components
when attaching the mounting brackets.
6b) Ice Storage Bin: Follow the ice storage bin, adapter kit, or top kit instructions for
securing the icemaker. If no instructions are available, secure the icemaker using the
2mounting brackets and the bolts provided. See Fig.2b.
Fig. 2a
Icemaker
Bolts
Mounting
Brackets
Fig. 2b
Bolts
Mounting
Brackets
Dispenser
Unit
Self-Tapping
Screws
(Not Provided)
Ice
Storage
Bin
Icemaker
Model Shown: KMD-860MWJ

14
E. Electrical Connection
WARNING
For All Models
• Electrical connection must be hard-wired and must meet national, state, and local
electrical code requirements. Failure to meet these code requirements could result
in death, electric shock, serious injury, re, or damage.
• The icemaker requires an independent power supply of proper capacity. See
the nameplate for electrical specications. Failure to use an independent power
supply of proper capacity can result in a tripped breaker, blown fuse, damage to
existing wiring, or component failure. This could lead to heat generation or re.
• THE ICEMAKER MUST BE GROUNDED. Failure to properly ground the icemaker
could result in death or serious injury.
• Electrical connection must be made in accordance with the instructions on the
"WARNING" tag, provided with the pig tail leads in the junction box. See Fig. 3.
Additional Warnings for Remote Models
• THE REMOTE CONDENSER UNIT MUST BE GROUNDED. Power supply and
ground connection to the remote condenser unit are supplied from the icemaker.
See "II.G.6. Electrical Connection." Failure to properly ground the remote
condenser unit could result in death or serious injury.
• To reduce the risk of electric shock, make all remote condenser unit connections
before connecting the icemaker power supply.
NOTICE
On remote models, the appliance must have power for a minimum of 4hours prior
to startup to prevent compressor damage.
• Usually an electrical permit and services of a
licensed electrician are required.
• The maximum allowable voltage variation is
±10 percent of the nameplate rating.
• NOTICE! On KMD-860M_J(Z) models, the
transformer’s voltage tap switch must be
positioned to match incoming voltage at
startup.
• The opening for the power supply connection
is 7/8" DIA to t a 1/2" trade size conduit.
KMD-860M_J(Z)
Fig. 3

15
F. Water Supply and Drain Connections
See Figs. 4, 5, and 6
WARNING
Water supply and drain connections must be installed in accordance with applicable
national, state, and local regulations.
NOTICE
• Normal operating water temperature should be within 45°F to 90°F (7°C to
32°C). Operation of the appliance, for extended periods, outside of this normal
temperature range may affect appliance performance.
• Water supply pressure must be a minimum of 10 PSIG and a maximum of
113PSIG. If the pressure exceeds 113 PSIG, the use of a pressure reducing valve
is required.
• To prevent damage to the appliance, do not operate the appliance when the water
supply is off, or if the pressure is below 10 PSIG. Do not run the appliance until
the proper water pressure is reached.
• External lters, strainers, or softeners may be required depending on water quality.
Contact your local Hoshizaki Certied Service Representative or local Hoshizaki
distributor for recommendations.
• A plumbing permit and services of a licensed plumber may be required in some areas.
• The icemaker drain line, dispenser unit/ice storage bin drain line, and water-cooled
condenser drain line (if applicable) must be run separately. The condensation drain line
can be connected to the icemaker drain line or can be run separately.
• Drain lines must have 1/4" fall per foot (2 cm per 1 m) on horizontal runs to get a good
ow. A vented tee connection is also required for proper ow.
• Drain lines should not be piped directly to the sewer system. An air gap of a minimum of
2vertical inches (5 cm) should be between the end of the drain pipes from the icemaker
and condensation drain, dispenser unit/ice storage bin, and water-cooled condenser (if
applicable) and the oor drain.

16
2-inch (5-cm) air gap
Floor Drain
1. Icemaker
Icemaker Water
Supply Inlet
Minimum Icemaker
Water Supply Line Size
Icemaker Drain
Outlet
Minimum Icemaker
Drain Line Size
Condensation
Drain Outlet
1/2" Female Pipe
Thread (FPT)
1/4" Nominal ID
Copper Water Tubing or
Equivalent
3/4" Female Pipe
Thread (FPT)
3/4" Nominal
ID Hard Pipe or
Equivalent
5/8" OD Hard
Tube
• An icemaker water supply line shut-off valve and drain valve must be installed.
• Be sure there is sufficient extra water supply line and drain line for the appliance to be
pulled out for service.
Fig. 4
Icemaker
Icemaker
Water Supply
Inlet
1/2" FPT
Bin Drain Outlet
3/4" FPT
Icemaker
Drain Outlet
3/4" FPT
Ice
Storage
Bin
Icemaker
Condensation
Drain Outlet
5/8" OD Hard Tube
Model Shown:
KMD-860MAJ
Vent Tube
Minimum 3/4" Nominal ID
Hard Pipe or Equivalent
Air-Cooled and Remote Models
Drain Valve
Shut-Off Valve
Separate piping to approved
drain. Leave a 2-inch (5-cm)
vertical air gap between the
end of each pipe and the
drain.
Be sure there is sufficient
extra water supply line and
drain line for the appliance
to be pulled out for service.
Minimum 1/4" Nominal ID Copper
Water Tubing or Equivalent

17
2-inch (5-cm) air gap
Floor Drain
2. Water-Cooled Condenser
a) Connection to an Open Drain System
Condenser Water
Supply Inlet
Minimum Condenser
Water Supply Line Size
Condenser Drain
Outlet
Minimum Condenser
Drain Line Size
1/2" Female Pipe
Thread (FPT)
1/4" Nominal ID Copper
Water Tubing or Equivalent
3/8" Female Pipe
Thread (FPT)
1/4" Nominal ID Hard Pipe
or Equivalent
• A condenser water supply line shut-off valve and drain valve must be installed.
• In some areas, a back ow preventer may be required in the cooling water circuit.
• In order to maintain the proper high side pressure, the condenser water supply inlet
temperature should not drop below 45°F (7°C) and the condenser drain outlet temperature
must be in the 104°F to 115°F (40°C to 46°C) range. Once the icemaker installation
is complete, conrm the condenser drain outlet temperature 5 minutes after a freeze
cycle starts. If the condenser drain outlet temperature is not in the proper range, use a
at blade screwdriver to rotate the adjustment screw on the water-regulating valve until
the temperature is in the proper range (rotate counterclockwise to raise temperature or
clockwise to lower temperature).
Fig. 5 Water-Cooled Models
Connection to an Open Drain System
Icemaker
Icemaker Water
Supply Inlet
1/2" FPT
Bin Drain Outlet
3/4" FPT
Icemaker
Drain Outlet
3/4" FPT
Condenser Water
Supply Inlet
1/2" FPT
Condenser
Drain Outlet
3/8" FPT
Model Shown:
KMD-860MWJ
Icemaker
Condensation
Drain Outlet
5/8" OD Hard
Tube
Vent Tube
Minimum 3/4" Nominal ID
Hard Pipe or Equivalent
Vent Tube
Ice
Storage
Bin
Minimum 1/4"
Nominal ID Hard
Pipe or Equivalent
Separate piping to approved
drain. Leave a 2-inch (5-cm)
vertical air gap between the
end of each pipe and the
drain.
Be sure there is sufficient
extra water supply line and
drain line for the appliance
to be pulled out for service.
Drain Valve
Shut-Off
Valve
Minimum 1/4" Nominal ID Copper
Water Tubing or Equivalent
Minimum 1/4" Nominal ID Copper
Water Tubing or Equivalent

18
2-inch (5-cm) air gap
Floor Drain
Icemaker
Condensation
Drain Outlet
5/8" OD Hard Tube
b) Connection to a Closed Loop System
Condenser Water
Supply Inlet
Minimum Condenser
Water Supply Line Size
Condenser
Return Outlet
Minimum Condenser
Return Line Size
1/2" Female Pipe
Thread (FPT)
1/4" Nominal ID Copper
Water Tubing or Equivalent
3/8" Female Pipe
Thread (FPT)
1/4" Nominal ID Copper
Water Tubing or Equivalent
• Shut-off valves and drain valves must be installed at both the condenser water supply inlet
and condenser return outlet.
• Minimum water ow to the condenser is 4 GPM.
• The pressure differential between the condenser water supply inlet and condenser return
outlet must be no less than 10 PSIG.
• When using a glycol blend, the solution mixture should be less than 30% glycol.
• In order to maintain the proper high side pressure, the condenser water supply inlet
temperature should not drop below 45°F (7°C) and the condenser return outlet
temperature must be in the 104°F to 115°F (40°C to 46°C) range. Once the icemaker
installation is complete, conrm the condenser return outlet temperature 5 minutes after a
freeze cycle starts. If the condenser return outlet temperature is not in the proper range,
use a at blade screwdriver to rotate the adjustment screw on the water-regulating valve
until the temperature is in the proper range (rotate counterclockwise to raise temperature
or clockwise to lower temperature).
Shut-Off Valve
Icemaker
Drain Outlet
3/4" FPT
Icemaker Water
Supply Inlet
1/2" FPT
Fig. 6
Condenser Water
Supply Inlet
1/2" FPT
Condenser
Return Outlet
3/8" FPT
Separate piping to approved
drain. Leave a 2-inch (5-cm)
vertical air gap between the
end of each pipe and the
drain.
Bin Drain
Outlet
3/4" FPT
Drain
Valve
Water-Cooled Models
Connection to a Closed Loop System
Model Shown:
KMD-860MWJ
Ice
Storage
Bin
Minimum 1/4" Nominal ID Copper
Water Tubing or Equivalent
Minimum 1/4"
Nominal ID
Copper Water
Tubing or
Equivalent
Minimum 3/4" Nominal ID
Hard Pipe or Equivalent
Vent Tube
Be sure there is sufficient
extra water supply line and
drain line for the appliance
to be pulled out for service.
Icemaker

19
G. Installation of Remote Condenser Unit for Remote Models
WARNING
• Installation of remote condenser unit must be performed by properly trained and
EPA-certied service personnel.
• The remote condenser unit must be installed in accordance with applicable
national, state, and local codes and regulations.
• Failure to install the remote condenser unit within these guidelines may adversely
affect safety, performance, component life, and warranty coverage.
• Power supply and ground wire to the remote condenser unit are supplied from the
icemaker. For details, see section "II.G.6. Electrical Connection."
1. Location
NOTICE
• The remote condenser unit is intended for outdoor use. Normal operating ambient
temperature must be within -20°F to +122°F (-29°C to +50°C). Operation of the
remote condenser unit, for extended periods, outside of this normal temperature
range may affect appliance performance.
• The maximum line length for the standard line sizes and refrigerant charge is
66' (20 m). With larger line sizes and/or additional refrigerant, the maximum line
length is 100' (30.5 m). For details, see "II.G.4 Line Set Size and Refrigerant
Charge."
• The maximum vertical distance between the remote condenser unit and the
icemaker is 33' (10 m) above or 10' (3 m) below the icemaker. These distances
are measured tting to tting. See Fig. 7.
The remote condenser unit must be positioned in a permanent site under the following
guidelines:
• A rm and at site.
• A dry and well ventilated area with 24" (61cm) clearance at front and rear for proper air
circulation and ease of maintenance and/or service should they be required. See Fig. 8.
Fig. 7
Min. 24" (61 cm) Clearance
Air Air
Fig. 8
Icemaker
Remote
Condenser
Unit
Service Loop
Max.
33'
(10 m)
Remote
Condenser
Unit
Max.
10'
(3 m)
Icemaker
Service Loop

20
4. Line Set Size and Refrigerant Charge
NOTICE
The icemaker, line set, and remote condenser unit must contain the same type
of refrigerant. Mixing of refrigerants will result in improper operation and possible
damage to the refrigeration system.
Line Set Size and Refrigerant Charge
Hoshizaki
Icemaker
Hoshizaki
Remote
Condenser
Unit
Line Set
Up to 66' (20 m)
Line Set
Greater than 66' (20 m)
Maximum 100' (30.5 m)
Liquid
Line
Discharge
Line
Charge
Adjustment
Liquid
Line
Discharge
Line
Charge Adjustment
(R-404A)
KMD-860MRJZ URC-9FZ 3/8"
OD
1/2" OD Not
Applicable
3/8"
OD
1/2" OD Add 0.4 oz. (11 g) for
each foot over 66'
(40g for each meter
over 20m). Write
new total charge on
icemaker's rating
label.
2. Checks Before Installation
1) Remove the shipping carton, tape, and packing material.
2) Check that the refrigerant lines do not rub or touch lines or other surfaces, and that the
fan blade moves freely.
3. Setup
1) Assemble 2 sets of legs using the legs, bolts, and nuts provided. See Fig. 9.
2) Position 1 of the plates provided between a set of legs and the remote condenser unit,
then secure the legs to the remote condenser unit with the bolts and nuts provided.
Repeat on the other side with the remaining set of legs.
3) The bottom of each leg has a mounting hole. Secure the legs to the permanent site with
4 bolts (not included).
Fig. 9
Bolt with Split Lock
Washer and Flat Washer
Nut
Plate
Leg
Bolt with Split Lock
Washer and Flat Washer
Nut