Manitowoc convotherm 4 User manual

Stacking kit
Read this manual before using
Convotherm 4 Stacking Kit
Operating and Installation Instructions UL, USA - Original, ENG
Your meal. Our mission.

FOR THE INSTALLER, OPERATOR, RESPONSIBLE OWNER
FOR YOUR SAFETY
Do not store or use gasoline or other flammable vapors or liquids in the
vicinity of this or any other unit.
WARNING
Improper installation, adjustment, alteration, service or maintenance can
cause property damage, injury and death. Read the installation, operating
and maintenance instructions thoroughly before installing or servicing this
equipment.
WARNING
Disconnect power at the main external power switch before servicing or
repairing a combi oven.
WARNING
To reduce the risk of electric shock, do not remove or open cover.
No user serviceable parts inside. Refer servicing to qualified personnel.
Disconnect power supply before servicing.
IMPORTANT
IT IS COMPULSORY TO POST INSTRUCTIONS WHICH ARE TO BE FOLLOWED IN THE EVENT
THE USER SMELLS GAS. THESE INSTRUCTIONS MUST BE LOCATED IN A PROMINENT
LOCATION, AND BE FULLY UNDERSTOOD BY ALL USERS OF THIS EQUIPMENT. THIS
INFORMATION NEED TO BE OBTAINED FROM YOUR LOCAL GAS SUPPLIER.
ALL SERVICE MUST BE PERFORMED BY A QUALIFIED CONVOTHERM AUTHORIZED
TECHNICIAN.
KEEP AREA FREE AND CLEAR OF COMBUSTIBLES.
Installation
Installation of this unit must be done by a licensed professional when installed in the Common-
wealth of Massachusetts.
The wiring diagram is located on the inner part of the side panel.
Customer documentation
The customer documentation is part of the combi oven.
Keep the customer documentation manuals handy at all times so that you can look up any re-
quired information.
Keep the customer documentation manuals for the entire life of the unit.
Carefully read the installation manual, the operating manual, and the operating instructions before
using, handling, and working on this unit.
If you transfer the combi oven to a new owner, make sure to give the new owner the customer
documentation manuals as well.

Table of Contents
Operating and Installation Instructions UL 3
Table of Contents
1General 4
1.1Environmental Protection 5
1.2About These Operating and Installation Instructions 6
1.3Your Stacking Kit’s Intended Use 7
2For Your Safety 8
3Installation location requirements 17
4Models and Parts 18
5Installation Notes 28
6Installation 30
6.1Installing the Exhaust Duct Extension on the Bottom Unit 31
6.2The bottom combi oven is mounted on the base 34
6.3Installing the center adapter 38
6.4Installing the Top Unit 45
6.5Wall Anchoring Kit (Optional) / Marine Model / Retaining Element 55
6.6Affixing Warning Labels 56
6.7Additional Work 57
7Placing into operation 58
7.1Procedure for Placing the Unit into Operation 59
8Cleaning and maintenance 60
8.1Cleaning and maintenance schedule 61
9Removing from service 63
9.1Removal from Service and Disposal 64

1 General
Operating and Installation Instructions UL 4
1 General
Purpose of this section
This section explains how to use these installation instructions.
Contents
This section covers the following subjects:
Page
Environmental Protection 5
About These Operating and Installation Instructions 6
Your Stacking Kit’s Intended Use 7

1 General
Operating and Installation Instructions UL 5
1.1 Environmental Protection
Policy statement
Our customers’ expectations, the legal regulations and standards we have to follow, and our compa-
ny’s reputation are what drives the quality and service behind all our products.
Our environmental management policy is not only designed to ensure that we are always in full com-
pliance with all environmental laws and regulations, but also reflects our commitment to the environ-
ment and to continuously improving our performance in this field.
In order to ensure that we meet all of our environmental goals while maintaining the high quality of our
products, and that things stay this way, we have developed a quality and environmental management
system.
This system meets the requirements set forth in ISO 9001:2008 and ISO 14001:2004.
Environmental protection measures
The following measures apply to this product:
Uses fully compostable packing products
Uses RoHS-compliant products
Complies with the REACH regulation
Recommends and uses biodegradable cleaning agents
E-waste recycling
Environmentally friendly disposal of old units through the manufacturer
Join us in our commitment to protecting the environment!

1 General
Operating and Installation Instructions UL 6
1.2 About These Operating and Installation Instructions
Purpose
These installation instructions provide answers to the following questions:
What kinds of things are important to keep in mind when installing a stacking kit?
Customer documentation structure
The customer documentation is made up of the following:
Installation manual
Operating manual
Supplementary installation instructions (these instructions)
Other required instructions
These instructions are meant to supplement the operating and installation manuals for your unit and
should only be used together with these manuals. For more information on technical data, intended
use, components, function, and safety, please refer to the manuals.
These instructions are intended for installers and authorized customer service companies.

1 General
Operating and Installation Instructions UL 7
1.3 Your Stacking Kit’s Intended Use
Permissible combinations with 6.10 / 10.10 unit sizes
6.10 on 6.10 with
6" foot height
6"
6"/8"
(marine model)
6.10 on 10.10 with
foot height
6"
6"/8"
(marine model)
6.10 on 6.10 with
4"/6" casters
6.10 on 10.10 with
4"/6" casters
6.10 on 6.10 with
12” foot height
Permissible combinations with 6.20 / 10.20 unit sizes
6.20 on 6.20 with
foot height
6"
6"/8"
(marine model)
6.20 on 10.20 with
foot height
6"
6"/8"
(marine model)
6.20 on 6.20 with
4"/6" casters
6.20 on 10.20 with
4"/6" casters
6.20 on 6.20 with
12” foot height
Intended use
The stacking kit should only be used for the following purpose:
The stacking kit has been designed and built exclusively for stacking the combi ovens specified
above.
Limitations on use
The following limitations on use must be observed:
Do not, under any circumstance, place a size 10.10 or 10.20 unit on a base with a foot height of 12”!
Do not, under any circumstance, place a size 10.10 or 10.20 unit on top!

2 For Your Safety
Operating and Installation Instructions UL 8
2 For Your Safety
The purpose of this section is to provide you with all the information on hazards and safety measures
that you will need (in addition to the unit safety information provided in the operating and installation
manual) in order to safely work with/on the stacking kit without putting yourself and others at risk.
Read this section very carefully.
Transportation and setup
When transporting and setting up the combi oven, keep the following hazards in mind and take the
actions required in order to eliminate and/or minimize these hazards:
Risk / hazard Where and in which situations will the
risk/hazard exist?
What to do / safety equipment
Explosion hazard posed
by gas leaks
Whenever the connections are not
disconnected before moving the unit
Make sure to only have gas technicians
from an authorized installation company
work on the gas system
Disconnect the connections
Safety device:
Wall anchoring kit
Risk of electric shock
posed by live parts
Whenever replacing the bottom unit’s dry
air intake
Work on the unit’s electrical compo-
nents should be performed exclusively
by a qualified electrician from an au-
thorized service company
Work professionally
Before removing the covers:
De-energize all connections
Lock out and tag out all switches
Make sure that the unit is
de-energized
Crush hazard if the unit
topples over
Whenever moving the units across
uneven surfaces or after bumping into
an obstacle
Whenever the connections are not
disconnected before lifting
Whenever the unit is not positioned
correctly
Whenever the supporting surface is
not stable and even
Secure the units so that they cannot
topple over
Use suitable equipment and assembly
aids to transport the units
Set up the units on an even and stable
supporting surface
Disconnect the connections
Place the unit on the locating pins
correctly and screw it in place
Safety device:
Wall anchoring kit (optional)
Locating pins and screw joints
Marine model: Feet that can be
screwed onto the floor
Whenever the top unit is loaded with a
lot of weight
When moving the stacking kit
When placing the unit on its back
Exercise caution when performing
maintenance work
Risk of injury due to
excessive exertion
When stacking the stacking kit and the
unit
Whenever using a spirit level to level
the units
Whenever mounting the center adapt-
er
Whenever placing the unit on its back
and then lifting it up again
Do not lift or carry too much weight!
Only with a sufficient number of people
or suitable equipment

2 For Your Safety
Operating and Installation Instructions UL 9
Risk / hazard Where and in which situations will the
risk/hazard exist?
What to do / safety equipment
Risk of scalding posed by
hot liquid
When lifting the unit
When placing the unit on its back
Let the unit cool down before making
changes
Wear the required personal protective
equipment
Risk of burns posed by hot
surfaces
On the air vent
On the exhaust ducts
Everywhere on the inside
On the outside of the unit door
Let the unit cool down before making
changes
Wear the required personal protective
equipment
Piercing hand hazard Whenever mounting the unit Exercise caution when performing
maintenance work
Wear the required personal protective
equipment
Pinch point hazard for
hands and fingers
Whenever mounting the center adapt-
er
Whenever mounting the top unit
Whenever moving stacking kits with
casters
When placing the unit on its back
Exercise caution when performing
maintenance work
Wear the required personal protective
equipment
Slip hazard When flipping the unit over Exercise caution when performing
maintenance work
Always keep the floor around the unit
dry
Shear hazard Whenever mounting the top unit Exercise caution when performing
maintenance work
Cut hazard When knocking out the perforated
knockout on the front plate and on the
door contact switch’s holding plate
When knocking out the perforated
knockout on the top unit’s bottom
Exercise caution when performing
maintenance work
Wear the required personal protective
equipment
Remove the knockout as indicated in
the instructions and deburr the corre-
sponding edges

2 For Your Safety
Operating and Installation Instructions UL 10
Installation, placing the unit into operation, removing the unit from service, maintenance
When installing and maintaining the combi oven, as well as when placing it into operation or removing
it from service, keep the following hazards in mind and take the actions required in order to eliminate
and/or minimize these hazards:
Risk / hazard Where and in which situations will the
risk/hazard exist?
What to do / safety equipment
Explosion hazard posed
by gas leaks
Whenever the connections are not
disconnected before moving the unit
Make sure to only have gas technicians
from an authorized installation company
work on the gas system
Disconnect the connections
Test the supply line for leaks
Test for leaks inside the unit
Safety device:
Retaining element
Burn and fire hazard
posed by hot combustion
exhaust air
Between the units
Whenever an excessive amount of
heat is produced due to improper as-
sembly
Do not use any gas exhaust system
other than the specified one
Risk of electric shock due
to damaged connection
cable
Whenever transporting the unit
Whenever the connection cable is
routed across sharp sheet metal edg-
es
At the back of the unit
Whenever the unit is on casters
Check the connection cable
Check the connection cable’s routing
Risk of electric shock due
to missing equipment
grounding
On the unit and on neighboring metal
parts
Connect the units to a grounding system
Risk of electric shock
posed by live parts
Whenever replacing the bottom unit’s
dry air intake
Whenever connecting the auxiliary
fans for the top unit’s center adapter
Work on the unit’s electrical compo-
nents should be performed exclusively
by a qualified electrician from an au-
thorized service company
Work professionally
Before removing the covers:
De-energize all connections
Lock out and tag out all switches
Make sure that the unit is
de-energized
Before putting the unit into operation,
make sure that all electrical connections
are undamaged and properly connected
Risk of electric shock due
to moisture entering the
wiring compartment
On the unit
Improper assembly
Follow the instructions to assemble
everything properly

2 For Your Safety
Operating and Installation Instructions UL 11
Risk / hazard Where and in which situations will the
risk/hazard exist?
What to do / safety equipment
Crush hazard if the unit
topples over
Whenever moving the units across
uneven surfaces or after bumping into
an obstacle
Whenever the connections are not
disconnected before lifting
Whenever the unit is not positioned
correctly
Whenever the supporting surface is
not stable and even
Secure the units so that they cannot
topple over
Use suitable equipment and assembly
aids to transport the units
Set up the units on an even and stable
supporting surface
Disconnect the connections
Place the unit on the locating pins
correctly and screw it in place
Safety device:
Wall anchoring kit (optional)
Locating pins and screw joints
Marine model: Feet that can be
screwed onto the floor
Whenever the top unit is loaded with a
lot of weight
When moving the stacking kit
When placing the unit on its back
Exercise caution when performing
maintenance work
Contact with cleaning
agents
When cleaning agent tubes are dam-
aged or cut by sharp components
Follow the installation sequence in the
instructions
Risk of scalding Whenever opening the bottom unit’s
door
Exercise caution when performing
maintenance work
Fall hazard as a result of
wet floors
When cleaning agent tubes are dam-
aged or cut by sharp components
Check the way the cleaning agent tubes
are routed
Pinch point hazard for
hands and fingers
When installing the side panels Exercise caution when performing
maintenance work
Wear the required personal protective
equipment
Risk of burns posed by hot
surfaces
On the exhaust duct
On the exhaust ducts
Everywhere on the inside
On the outside of the unit door
Wear the required personal protective
equipment
Let the units cool down before per-
forming maintenance
Cut hazard When knocking out the perforated
knockout on the front plate
When knocking out the perforated
knockout on the top unit’s bottom
Exercise caution when performing
maintenance work
Wear the required personal protective
equipment
Remove the knockout as indicated in
the instructions and deburr the corre-
sponding edges

2 For Your Safety
Operating and Installation Instructions UL 12
Operation and cleaning
When operating and cleaning the combi oven, keep the following hazards in mind and take the actions
required in order to eliminate and/or minimize these hazards:
Risk / hazard Where and in which situations will the
risk/hazard exist?
What to do
Explosion hazard posed
by gas leaks
Whenever the connections are not
disconnected before moving the unit
Disconnect the connections
Safety device:
Wall anchoring kit
Burn and fire hazard
posed by hot combustion
exhaust air
Between the units
Whenever an excessive amount of
heat is produced due to improper as-
sembly
Do not use any gas exhaust system
other than the specified one
Risk of electric shock due
to damaged connection
cable
Whenever transporting the unit
Whenever the connection cable is
routed across sharp sheet metal edg-
es
At the back of the unit
Whenever the unit is on casters
Check the connection cable
Check the connection cable’s routing
Risk of electric shock due
to moisture entering the
wiring compartment
On the unit
Improper assembly
Follow the instructions to assemble
everything properly
Contact with cleaning
agents
When cleaning agent tubes are dam-
aged or cut by sharp components
Follow the installation sequence in the
instructions
Risk of scalding Whenever opening the bottom unit’s
door
Whenever removing GN containers
Exercise caution when performing
maintenance work
When handling bakeware containing
liquid food or food that will become
liquefied during cooking, make sure to
only slide the bakeware into fully visi-
ble shelf levels, as well as to pull it out
in a completely horizontal position
Fall hazard as a result of
wet floors
When cleaning agent tubes are dam-
aged or cut by sharp components
Check the way the cleaning agent tubes
are routed
Pinch point hazard for
hands and fingers
When installing the side panels Exercise caution when performing
maintenance work
Wear the required personal protective
equipment
Risk of burns posed by hot
surfaces
On the exhaust duct
On the exhaust ducts
Everywhere on the inside
On the outside of the unit door
Wear the required personal protective
equipment
Let the units cool down before clean-
ing

2 For Your Safety
Operating and Installation Instructions UL 13
When moving units on a base with casters while the combi oven is running, keep the following hazards
in mind and take the actions required in order to eliminate and/or minimize these hazards:
Risk / hazard Where and in which situations will the
risk/hazard exist?
What to do
Pinch point hazard (for
multiple body parts)
When units are being moved on a base
with casters
Do not pull the base with casters
forward unless you are cleaning the
combi oven case or the floor/surface
below the units, in which case you
should make sure not to pull it forward
by more than the 20” allowed by the
attached retaining element
Make sure to always lock the casters’
wheels when the units are running
Every day before using the units,
check to make sure that the casters’
wheels are locked
Pinch point hazard (hand
and foot hazard)
Risk of scalding posed by
hot wastewater
Risk of scalding posed by
hot, liquid food
Risk of electric shock
posed by live parts
Gas explosion hazard
Skin and eye irritation
hazard as a result of
contact with cleaning
agents
Pinch point hazard for
hands and fingers
Risk of burns posed by hot
surfaces

2 For Your Safety
Operating and Installation Instructions UL 14
When moving units on a base with casters while the combi oven is being cleaned, keep the following
hazards in mind and take the actions required in order to eliminate and/or minimize these hazards
Risk / hazard Where and in which situations will the
risk/hazard exist?
What to do
All the risks and hazards
listed below
When units are being moved on a base
with casters
Before moving the unit (to clean the
combi oven’s case or the floor, for
example), check to make sure that the
retaining element designed to limit
how much the base can move with the
unit is attached.
De-energize the unit before moving it
When moving the unit, make sure not
to roll over any connection lines (elec-
trical, gas, and water)
Pinch point hazard (for
multiple body parts)
When units are being moved on a base
with casters
Pay attention to the utility and hose
connections.
Use at least two people to move the
unit
Pinch point hazard (hand
and foot hazard)
When units are being moved on a base
with casters
Keep the unit doors shut
Risk of scalding posed by
hot wastewater
When units are being moved on a base
with casters
Let the units cool down
Immediately wipe or mop up any water
that has leaked
Wear appropriate protective clothing
Risk of scalding posed by
hot, liquid food
When units are being moved on a base
with casters
Do not move units if there is any food
still in them
Risk of electric shock
posed by live parts
When units are being moved on a base
with casters
Pay attention to the utility and hose
connections.
Gas explosion hazard When units are being moved on a base
with casters
Pay attention to the gas supply line
Skin and eye irritation
hazard as a result of
contact with cleaning
agents
When units are being moved on a base
with casters
Make sure that the connections are
long enough
When moving the base, keep the
cleaning agent canisters closed
Trip hazard as a result of
utility and hose connec-
tions routed in the open
When cleaning behind units that have
been pulled forward
Exercise caution when performing
maintenance work
Fall hazard as a result of
floors being wet with
wastewater
When cleaning behind units that have
been pulled forward
In front of the unit
Immediately wipe or mop up any water
that has leaked
Make sure that the connections are
long enough
Fall hazard as a result of
floors being wet with
cleaning agents
When cleaning behind units that have
been pulled forward
In front of the unit
When moving the units, keep the clean-
ing agent canisters closed

2 For Your Safety
Operating and Installation Instructions UL 15
Staff requirements
The table below specifies the qualifications needed for each role. Provided that they have the required
qualifications, a single person can take over more than one role if necessary.
Role Required qualifications Tasks
Combi oven owner
or
the owner’s em-
ployee who is
responsible for the
unit and for the staff
operating it
Is familiar with the rules involved in handling
heavy loads
Briefed on all of the combi oven’s
safety-relevant functions, mechanisms,
and devices by the person placing the
unit into operation so that the infor-
mation can be relayed to all the staff
operating the unit
Shown how the unit is operated by the
person placing the unit into operation
so that the information can be relayed
to all the staff operating the unit
If necessary, helping out as directed
with transportation within the facilities
and with setting up the unit
Mover Trained in the use of forklifts and/or pallet
jacks
Is familiar with the rules involved in
handling heavy loads
Transporting the unit within the facilities
Service technician Qualified staff from an authorized service
company
Has relevant technical training
Has unit-specific training
Is familiar with the rules involved in
handling heavy loads
Is able to assess whether the unit’s power,
gas, water, and drain connections have
been correctly set up.
If performing maintenance work on the
gas system: Is part of the maintenance
staff of a service company authorized by
the gas utility
Setting up the unit
Installing the fully automatic oven
cleaning system
Placing the unit into operation
Removing the unit from service
Gas technician Is a technician authorized by the gas
provider
Has relevant training
Qualified staff from an authorized service
company
Connecting the unit to the gas connec-
tion at the facilities
Uninstalling gas connections
Electrician Qualified staff from an authorized service
company
Has relevant training
Is a qualified electrician
Connecting the unit to the electrical
connection at the facilities
Uninstalling electrical connections
Water and
wastewater installer
Qualified staff from an authorized service
company
Has relevant training
Connecting the unit to the water
connection at the facilities
Uninstalling water connections
Connecting the unit to the drain
connection at the facilities
Uninstalling the drain connection

2 For Your Safety
Operating and Installation Instructions UL 16
Role Required qualifications Tasks
Person placing the
unit into operation
(service technician)
Is an employee from an authorized service
company who is responsible overall for
placing the unit into operation
Has relevant technical training
Has unit-specific training
Is familiar with the rules involved in
handling heavy loads
Is able to assess whether the unit’s power,
gas, water, and drain connections have
been correctly set up.
Briefing the owner or the responsible
employee
Checking all steps and conditions as
per the checklists
Work areas during installation and placement into operation
During installation and placement into operation, the work area for staff will be the entire area occupied
by the unit and its surroundings.

3 Installation location requirements
Operating and Installation Instructions UL 17
3 Installation location requirements
Prerequisites
The following prerequisites must be met:
You have read and understood the combi oven’s installation manual.
Supporting surface
The supporting surface must have the following characteristics:
The supporting surface must be flat and level.
The supporting surface must be able to bear the sum of the unit weight (including the maximum
permissible loading weight (see 'Technical Data' section in the installation manual), the accessories’
weight, and the stacking kit weight (stacking kit weights listed below).
Stacking kit weights
Depending on the specific size and model being used, the stacking kit will weigh between 66 and 110
lbs (without units and accessories).
Stacking kit combinations featuring electrical and gas units
The following applies to stacking kit combinations featuring electrical and gas units:
If the electrical unit is on the bottom: Use an electrical stacking kit (unit on ES/EB unit)
If the gas unit is on the bottom: Use a gas stacking kit (unit on GS/GB unit)

4 Models and Parts
Operating and Installation Instructions UL 18
4 Models and Parts
Component
Item number Version Unit type For the following units
3455861
3455864
Stacking kit with foot height of 6" ES/EB
6.10 on 6.10
6.10 on 10.10
6.20 on 6.20
6.20 on 19.20
3455868
3455869
Stacking kit with foot height of 6"
Marine model
ES/EB
6.10 on 6.10
6.10 on 10.10
6.20 on 6.20
6.20 on 19.20
3462090
3462091
Stacking kit with foot height of 8"
Marine model
ES/EB
6.10 on 6.10
6.10 on 10.10
6.20 on 6.20
6.20 on 10.20
3455862
3455865
Stacking kit with 4” casters ES/EB
6.10 on 6.10
6.10 on 10.10
6.20 on 6.20
6.20 on 10.20
3462275
3462276
Stacking kit with 6" casters ES/EB
6.10 on 6.10
6.10 on 10.10
6.20 on 6.20
6.20 on 10.20
3456266
3456267
Stacking kit with foot height of 12" ES/EB
6.10 on 6.10
6.10 on 10.10
6.20 on 6.20
6.20 on 10.20
3456171
3456174
Stacking kit with foot height of 6" GS/GB
6.10 on 6.10
6.10 on 10.10
6.20 on 6.20
6.20 on 10.20
3456172
3456175
Stacking kit with 4” casters GS/GB
6.10 on 6.10
6.10 on 10.10
6.20 on 6.20
6.20 on 10.20
3462277
3462278
Stacking kit with 6" casters GS/GB
6.10 on 6.10
6.10 on 10.10
6.20 on 6.20
6.20 on 10.20
3456276
3456277
Stacking kit with foot height of 12" GS/GB
6.10 on 6.10
6.10 on 10.10
6.20 on 6.20
6.20 on 10.20

4 Models and Parts
Operating and Installation Instructions UL 19
Optional
3416730 Wastewater installation kit Two units
3423745 Single water connection kit Two units (if there is a water treatment system)
3423747 Double water connection kit Two units (if there is soft water and hard water)
3455859 Wall anchoring kit for stacking kit One unit

4 Models and Parts
Operating and Installation Instructions UL 20
Stacking kit parts: Center adapter for electrical units
The figure below shows a size 6.20 center adapter for electrical units used as an example represent-
ing all unit sizes:
138
6
57
11
12
15
16
17
18
13
24
9
10
14