S Model Installation
Section 2 Installation Instructions
These instructions are provided to assist the qualified installer. Check your local Yellow Pages for the name of
the nearest Manitowoc distributor, or call Manitowoc Ice, Inc. for information regarding start-up services.
Ice Machine Dimensions
S320/S420 AIR AND WATER-COOLED ICE MACHINES
Important
Failure to follow these installation guidelines may affect warranty coverage.
All Manitowoc ice machines require the ice storage system (bin, dispenser, etc.) to incorporate an ice deflector.
The S600, S850, S1000 ice machines require adding Manitowoc Ice Deflector Kit K00347 when installing
with non-Manitowoc ice storage systems. Prior to using a non-Manitowoc ice storage system
with other Manitowoc ice machines, contact the manufacturer to assure their ice deflector is
compatible with Manitowoc ice machines.
30” large capacity ice storage bins must be attached to the wall with the bracket provided with the bin.
The location selected for the ice machine must meet the following criteria. If any of these criteria are not met,
select another location.
• The location must be free of airborne and other contaminants.
• The air temperature must be at least 35°F (1.6°C), but must not exceed 110°F (43.4°C).
• Remote air cooled - The air temperature must be at least -20°F (-29°C), but must not exceed 120°F (49°C)
• The location must not be near heat-generating equipment or in direct sunlight and must be protected from weather.
• The location must not obstruct air flow through or around the ice machine. Refer to the chart below for
clearance requirements.
Ice Machine Heat of Rejection
Ice machines, like other refrigeration equipment, reject heat through the condenser. It is helpful to know the
amount of heat rejected by the ice machine when sizing air conditioning equipment where self-contained aircooled
ice machines are installed.
This information is also necessary when evaluating the benefits of using water-cooled or remote condensers to
reduce air conditioning loads. The amount of heat added to an air conditioned environment by an ice machine
using a water-cooled or remote condenser is negligible. Knowing the amount of heat rejected is also important
when sizing a cooling tower for a water-cooled condenser. Use the peak figure for sizing the cooling tower.
*There is no minimum clearance required for water-cooled or remote
ice machines. This value is recommended for efficient operation and servicing only.
The ice machine must be protected if it will be subjected to temperatures below 32°F (0°C).
Failure caused by exposure to freezing temperatures is not covered by the warranty. See
“Removal from Service/Winterization”.
Series Ice Machine
Heat of Rejection B.T.U./Hour Air Conditioning
Because the heat of rejection varies during the ice making cycle, the figure shown is an average.
Removing Drain Plug and Leveling the Ice Storage Bin
1. Remove threaded plug from drain fitting.
2. Screw the leveling legs onto the bottom of the bin.
3. Screw the foot of each leg in as far as possible.
4. Move the bin into its final position.
5. Level the bin to assure that the bin door closes and seals properly. Use a level on top of the bin. Turn the
base of each foot as necessary to level the bin.
6. Inspect bin gasket prior to ice machine installation. (Manitowoc bins come with a closed cell foam
gasket installed along the top surface of the bin.)
7. Remove all panels from ice machine before lifting. Remove both front panels, top cover, left and right side panels.
8. Install ice machine on bin.
Leveling Leg and Foot
Air-Cooled Baffle
SELF-CONTAINED AIR-COOLED ONLY
The air-cooled baffle prevents condenser air from recirculating. To install:
1. Remove the back panel screws next to the condenser.
2. Align the mounting holes in the air baffle with the screw holes and reinstall the screws.
The legs must be screwed in tightly to prevent them from bending.
The maximum allowable voltage variation is ±10% of the
rated voltage at ice machine start-up (when the electrical load is highest).
All electrical work, including wire routing and grounding, must conform to local, state and national electrical
codes. The following precautions must be observed:
• The ice machine must be grounded.
• A separate fuse/circuit breaker must be provided for each ice machine.
• A qualified electrician must determine proper wire size dependent upon location, materials used and
length of run (minimum circuit ampacity can be used to help select the wire size).
• The maximum allowable voltage variation is +/-10 of the rated voltage at ice machine start-up (when the
electrical load is highest).
• Check all green ground screws in the control box and verify they are tight before starting the ice machine.
Incorrect polarity can lead to erratic ice machine operation and a safety issue. This is especially critical on
230 volt / 50 cycle ice machines.
Fuse/Circuit Breaker
A separate fuse/circuit breaker must be provided for each ice machine. Circuit breakers must be H.A.C.R.
rated (does not apply in Canada).
MINIMUM CIRCUIT AMPACITY
The minimum circuit ampacity is used to help select the wire size of the electrical supply. (Minimum circuit
ampacity is not the ice machine’s running amp load.) The wire size (or gauge) is also dependent upon
location, materials used, length of run, etc., so it must be determined by a qualified electrician.
ELECTRICAL REQUIREMENTS
Refer to Ice Machine Model/Serial Plate for voltage/ amperage specifications.
GROUND FAULT CIRCUIT INTERUPTER
Ground Fault Circuit Interupter (GFCI/GFI) protection is a system that shuts down the electric circuit (opens it)
when it senses an unexpected loss of power, presumably to ground. Manitowoc Ice, Inc. does not
recommend the use of a GFCI/GFI circuit protection with our equipment. If code requires the use of a GFCI/GFI
then you must follow the local code. The circuit must be dedicated, sized properly and there must be a panel
GFCI/GFI breaker. We do not recommend GFCI/GFI outlets as they are known for more intermittent nuisance
trips than panel breakers.
All wiring must conform to local, state and national codes.
The ice machine must be grounded in accordance with national and local electrical codes.
Important
Observe correct polarity of incoming line voltage.
MAXIMUM BREAKER SIZE & MINIMUM CIRCUIT AMPERAGE CHART
(* indicates preliminary data)
MINIMUM POWER CORD SPECIFICATIONS
If a power cord is used the wire size to the receptacle is dependant upon location, materials used, length of run, etc.,
so it must be determined by a qualified electrician. Local, state or national requirements will supersede our minimum
requirements. Ice Machine Voltage Phase Cycle Air-Cooled Water Cooled Remote
Maximum Fuse/Circuit Breaker Minimum Circuit Amps
These diagrams are not intended to show proper wire routing, wire sizing, disconnects, etc., only the
correct wire connections. All electrical work, including wire routing and
grounding, must conform to local, state and national electrical codes.
Though wire nuts are shown in the drawings, the ice machine field wiring connections may use either
wire nuts or screw terminals.
For United Kingdom Only
As the colors of the wires in the mains lead of the appliance may not correspond with the colored markings
identifying the terminals in your plug, proceed as follows:
• The wire which is colored green and yellow must be connected to the terminal in the plug which is marked with
the letter E or by the earth ground symbol or colored green or green and yellow.
• The wire colored blue must be connected to the terminal which is marked with the letter N or colored black.
• The wire colored brown must be connected to the terminal which is marked with the letter L or colored red.
Installation Instructions Section 2
These diagrams are not intended to show proper wire routing, wire sizing, disconnects, etc., only the
correct wire connections. All electrical work, including wire routing and
grounding, must conform to local, state and national electrical codes.
Though wire nuts are shown in the drawings, the ice machine field wiring connections may use either
wire nuts or screw terminals.
F2 wire is located in the compressor compartment behind the control box. The wire is labeled F2 and
capped with a wire nut.
Water Supply and Drain Requirements
WATER SUPPLY
Local water conditions may require treatment of the
water to inhibit scale formation, filter sediment, and
remove chlorine odor and taste.
WATER INLET LINES
Follow these guidelines to install water inlet lines:
• Do not connect the ice machine to a hot water supply. Be sure all hot water restrictors installed for
other equipment are working. (Check valves on sink faucets, dishwashers, etc.)
• If water pressure exceeds the maximum recommended pressure (80 psi), obtain a water
pressure regulator from your Manitowoc distributor.
• Install a water shut-off valve for both the ice making and condenser water lines.
• Insulate water inlet lines to prevent condensation.
DRAIN CONNECTIONS
Follow these guidelines when installing drain lines to prevent drain water from flowing back into the ice
machine and storage bin:
• Drain lines must have a 1.5 inch drop per 5 feet of run (2.5 cm per meter), and must not create traps.
• The floor drain must be large enough to accommodate drainage from all drains.
• Run separate bin and ice machine drain lines. Insulate them to prevent condensation.
• Vent the bin and ice machine drain to the atmosphere. Do not vent the condenser drain on water-cooled models.
Cooling Tower Applications
(Water-Cooled Models)
A water cooling tower installation does not require modification of the ice machine. The water regulator
valve for the condenser continues to control the refrigeration discharge pressure.
It is necessary to know the amount of heat rejection, and the pressure drop through the condenser and water
valves (inlet and outlet) when using a cooling tower on an ice machine.
• Water entering the condenser must not exceed 90°F (32.2°C).
• Water flow through the condenser must not exceed 5 gallons (19 liters) per minute.
• Allow for a pressure drop of 7 psi (48 kPA) between the condenser water inlet and the outlet of the ice machine.
• Water exiting the condenser must not exceed 110°F (43.3°C).
Important
If you are installing a Manitowoc Arctic Pure™ water filter system, refer to the Installation Instructions
supplied with the filter system for ice making water inlet connections.
Do not apply heat to water valve inlet fitting. This will damage plastic water inlet connection.
IMPORTANT
The Commonwealth of Massachusetts requires that all water-cooled models must be connected only to a closed
loop, cooling tower system.
WATER SUPPLY AND DRAIN LINE SIZING/CONNECTIONS
Refer
to “Ice Machine Dimensions” at the beginning of Section 2 for the exact
locations of inlets and drains for the model you are working on.
Typical Water Supply Drain Installation
Plumbing must conform to state and local codes.
Location Water Temperature Water Pressure Ice Machine Fitting Tubing Size Up to Ice Machine Fitting Ice Making
PLASTIC FITTING ON OPPOSITE SIDE DO NOT APPLY HEAT OPEN, TRAPPED AND VENTED DRAIN
DO NOT TRAP DRAIN LINE, LEAVE AIR GAP BETWEEN DRAIN TUBE AND DRAIN
3/8” FPT ICE MAKING WATER INLET FITTING, PLASTIC FITTING ON OPPOSITE SIDE DO NOT
APPLY HEAT 1/2” FPT CONDENSER WATER DRAIN (WATER COOLED UNITS ONLY)
3/8” FPT CONDENSER WATER INLET (WATER COOLED UNITS ONLY 1/2” CPVC SOCKET AUXILLARY BASE DRAIN
Remote Condenser/Line Set Installation
REMOTE ICE MACHINES
REFRIGERANT CHARGE
Each remote ice machine ships from the factory with a refrigerant charge appropriate for installation with line
sets of up to 50' (15.25 m). The serial tag on the ice machine indicates the refrigerant charge.
Additional refrigerant may be required for installations using line sets between 50' and 100’ (15.25-30.5 m)
long. If additional refrigerant is required, refer to the chart below for the correct amount to be added.
If remote line set length is between 50' and 100' (15.25- 30.5 m), add additional refrigerant to the nameplate charge.
Refer to the Installation Instructions in Installation Use and Care Manual for the model being worked on.
Tubing length: ______________________________
Refrigerant added to nameplate: ________________
New total refrigerant charge: ___________________
Potential Personal Injury Situation The ice machine contains refrigerant charge.
Installation of the line sets must be performed by a properly trained and EPA certified refrigeration
technician aware of the dangers of dealing with refrigerant charged equipment.
Never add more than nameplate charge to the refrigeration system for any application.
Condensers must be mounted horizontally with the fan motor on top.
Remote condenser installations consist of vertical and horizontal line sets between the ice machine and the
condenser. When combined, they must fit within approved specifications. The following guidelines,
drawings and calculation methods must be followed to verify a proper remote condenser installation.
GUIDELINES FOR ROUTING LINE SETS
First, cut a 2.5" (6.35 cm) circular hole in the wall or roof for tubing routing. The line set end with the 90° bend will
connect to the ice machine. The straight end will connect to the remote condenser.
Follow these guidelines when routing the refrigerant lines. This will help insure proper performance and
service accessibility.
1. Optional - Make the service loop in the line sets (as shown below). This permits easy access to the ice
machine for cleaning and service. Do not use hard rigid copper at this location.
2. Required - Do not form traps in the refrigeration lines (except the service loop). Refrigerant oil must be
free to drain toward the ice machine or the condenser. Route excess tubing in a supported
downward horizontal spiral (as shown below). Do not coil tubing vertically.
3. Required - Keep outdoor refrigerant line runs as short as possible.
The 60 month compressor warranty (including the 36 month labor replacement warranty) will not apply
if the remote ice machine is not installed according to specifications.
This warranty also will not apply if the refrigeration system is modified with a condenser, heat reclaim
device,
or other parts or assemblies not manufactured by Manitowoc Ice, Inc.,
unless specifically approved in writing by Manitowoc Ice, Inc.
CALCULATING REMOTE CONDENSER INSTALLATION DISTANCES
Line Set Length
The maximum length is 100' (30.5 m). The ice machine compressor must have the proper oil
return. The receiver is designed to hold a charge sufficient to operate the ice machine in ambient
temperatures between -20°F (-29°C) and 120°F (49°C), with line set lengths of up to 100' (30.5 m).
Line Set Rise/Drop
The maximum rise is 35' (10.7 m).
The maximum drop is 15' (4.5 m).
Calculated Line Set Distance
The maximum calculated distance is 150' (45.7 m).
Line set rises, drops, horizontal runs (or combinations of these) in excess of the stated maximums will exceed
compressor start-up and design limits. This will cause poor oil return to the compressor.
Make the following calculations to make sure the line set layout is within specifications.
1. Insert the measured rise into the formula below. Multiply by 1.7 to get the calculated rise.
(Example: A condenser located 10 feet above the ice machine has a calculated rise of 17 feet.)
2. Insert the measured drop into the formula below. Multiply by 6.6 to get the calculated drop.
(Example. A condenser located 10 feet below the ice machine has a calculated drop of 66 feet.)
3. Insert the measured horizontal distance into the formula below. No calculation is necessary.
4. Add together the calculated rise, calculated drop, and horizontal distance to get the total calculated
distance. If this total exceeds 150' (45.7 m), move the condenser to a new location and perform the
calculations again.
Maximum Line Set Distance Formula
If a line set has a rise followed by a drop, another rise cannot be made. Likewise, if a line set has a
drop followed by a rise, another drop cannot be made.
Step 1. Measured Rise (35' [10.7 m] Maximum) ______ x 1.7 = _______ Calculated Rise
Step 2. Measured Drop (15' [4.5 m] Maximum) ______ x 6.6 = _______ Calculated Drop
Step 3. Measured Horizontal Distance (100' [30.5 m] Maximum) _______ Horizontal Distance
Step 4. Total Calculated Distance 150' (45.7 m) _______ Total Calculated Distance
LENGTHENING OR REDUCING LINE SET LENGTHS
In most cases, by routing the line set properly, shortening will not be necessary. When shortening or
lengthening is required, do so before connecting the line set to the ice machine or the remote condenser. This
prevents the loss of refrigerant in the ice machine or condenser.
The quick connect fittings on the line sets are equipped with Schraeder valves. Use these valves to recover any
vapor charge from the line set. When lengthening or shortening lines follow good refrigeration practices,
purge with nitrogen and insulate all tubing. Do not change the tube sizes. Evacuate the lines and place
about 5 oz (143g) of vapor refrigerant charge in each line.
CONNECTING A LINE SET
1. Remove the dust caps from the line set, condenser and ice machine.
2. Apply refrigeration oil to the threads on the quick disconnect couplers before connecting them to the condenser.
3. Carefully thread the female fitting to the condenser or ice machine by hand.
4. Tighten the couplings with a wrench until they bottom out.
5. Turn an additional 1/4 turn to ensure proper brassto- brass seating. Torque to the following specifications:
6. Check all fittings and valve caps for leaks.
7. Make sure Schraeder cores are seated and Schraeder caps are on and tight.
REMOTE RECEIVER SERVICE VALVE
The receiver service valve is closed during shipment. Open the valve prior to starting the ice machine.
1. Remove the top and left side panels.
2. Remove the receiver service valve cap.
3. Backseat (open) the valve.
4. Reinstall the cap and panels.
Liquid Line Discharge Line Backseating the Receiver Service Valve
Remote Ice Machine Usage with Non-Manitowoc Multi-Circuit Condensers
WARRANTY
The sixty (60) month compressor warranty, including thirty six (36) month labor replacement warranty, shall
not apply when the remote ice machine is not installed within the remote specifications. The foregoing warranty
shall not apply to any ice machine installed and/or maintained inconsistent with the technical instructions
provided by Manitowoc Ice, Inc. Performance may vary from Sales specifications. S-Model ARI certified
standard ratings only apply when used with a Manitowoc remote condenser.
If the design of the condenser meets the specifications, Manitowoc’s only approval is for full warranty coverage
to be extended to the Manitowoc manufactured part of the system. Since Manitowoc does not test the
condenser in conjunction with the ice machine, Manitowoc will not endorse, recommend, or approve the
condenser, and will not be responsible for its performance or reliability.
HEAD PRESSURE CONTROL VALVE
Any remote condenser connected to a Manitowoc SModel Ice Machine must have a head pressure control
valve #836809-3 (available from Manitowoc Distributors) installed on the condenser package. Manitowoc will not
accept substitute “off the shelf” head pressure control valves.
FAN MOTOR
The condenser fan must be on during the complete ice machine freeze cycle (do not cycle on fan cycle control).
The ice maker has a condenser fan motor circuit for use with a Manitowoc condenser. It is recommended that this
circuit be used to control the condenser fan(s) on the multi-circuit condenser to assure it is on at the proper
time. Do not exceed the rated amps for the fan motor circuit listed on the ice machine’s serial tag.
INTERNAL CONDENSER VOLUME
The multi-circuit condenser internal volume must not be less than or exceed that used by Manitowoc (see chart
on next page). Do not exceed internal volume and try to add charge to compensate, as compressor failure will result.
ΔT is the difference in temperature between the condensing refrigerant and entering air. The ΔT should
be 15 to 20°F (-9.4 to -6.6°C) at the beginning of the freeze cycle (peak load conditions) and drop down to 12
to 17°F (-11.1 to -8.3°C) during the last 75% of the freeze cycle (average load conditions).
REFRIGERANT CHARGE
Remote ice machines have the serial plate refrigerant charge (total system charge) located in the ice maker
section. (Remote condensers and line sets are supplied with only a vapor charge.)
QUICK CONNECT FITTINGS
The ice machine and line sets come with quick connect fittings. It is recommended that matching quick connects
(available through Manitowoc Distributors) be installed in the multi-circuit condenser, and that a vapor “holding”
charge (5 oz.) of proper refrigerant be added to the condenser prior to connection of the ice machine or line
set to the condenser.
Manitowoc warrants only complete new and unused remote packages. Guaranteeing the integrity of a
new ice machine under the terms of our warranty prohibits the use of pre-existing (used) tubing or condensers.
Do not use a fan cycling control to try to maintain discharge pressure. Compressor failure will result.
Never add more than nameplate charge to ice machine for any application.
NON-MANITOWOC MULTI-CIRCUIT CONDENSER SIZING CHART
Typical Single Circuit Remote Condenser Installation
Ice Machine
Installation Check List
Is the Ice Machine level?
Has all of the internal packing been removed?
Have all of the electrical and water connections been made?
Has the supply voltage been tested and checked against the rating on the nameplate?
Is there proper clearance around the ice machine for air circulation?
Is the ice machine grounded and polarity correct?
Has the ice machine been installed where ambient temperatures will remain in the range of 35° - 110°F (1.6° - 43.3°C)?
Has the ice machine been installed where the incoming water temperature
will remain in the range of 35° - 90°F (1.6° - 32.2°C)?
Is there a separate drain for the water-cooled condenser?
Is there a separate drain for the bin?
Are the ice machine and bin drains vented?
Are all electrical leads free from contact with refrigeration lines and moving equipment?
Has the owner/operator been instructed regarding maintenance and the use of Manitowoc Cleaner and Sanitizer?
Has the owner/operator completed the warranty registration card?
Has the ice machine and bin been sanitized?
Is the toggle switch set to ice? (The toggle switch is located directly behind the front panel).
Is the ice thickness control set correctly?
(Refer to Operational Checks to check/set the correct ice bridge thickness).
Additional Checks for Remote Models
Has the receiver service valve been opened?
Does the remote condenser fan operate properly after start-up?
Has the remote condenser been located where ambient temperatures will remain in the range of -20° - 120°F .
Is the line set routed properly?
Are both refrigeration lines to remote condenser run so they do not lay in water and are properly insulated?
