MKN FlexiCombi Classic, FlexiCombi Classic 6.15, FlexiCombi Classic 6.21, FlexiCombi Classic 10.15, FlexiCombi Classic 10.21 Installation Instructions

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Read the operating instructions prior to commissioning

Installation instructions

Combisteamer

Unit Model Type of energy Device type

FlexiCombi Classic 6.15, 6.21, 10.15, 10.21 Gas Countertop unit

20.15, 20.21 Floor-standing unit

Translation from the original document • 10014471-0AIDE-A • 08/01/2016

10014471-0AIBE-A en-GB

Manufacturer

MKN Maschinenfabrik Kurt Neubauer GmbH & Co. KG Halberstädter Straße 2a 38300 Wolfenbüttel, Germany

Telephone +49 53 31 / 89-0 Fax +49 53 31 / 89-280

All rights to text, graphics and pictures in this documentation are held by MKN Maschinenfabrik Kurt Neubauer GmbH & Co. KG. Distribution or duplication is only permitted with the prior written consent of MKN. Copyright by MKN Maschinenfabrik Kurt Neubauer GmbH & Co. KG.

2 Installation instructions

Directory of contents

1Introduction......................................................................... 5

1.1About this manual ............................................................................ 5

1.1.1Explanation of signs ..................................................................................  6

1.2Use of the unit................................................................................... 7

1.3Warranty............................................................................................ 7

2Safety information.............................................................. 8

3Description of the unit ..................................................... 11

3.1Overview of the unit ....................................................................... 11

3.2Planning drawing............................................................................ 13

3.3Equipment and connection data................................................... 14

3.3.1Connection pressure ...............................................................................  16

3.3.2Speed of the fan-assisted gas burner .....................................................  16

3.3.3Exhaust gas values .................................................................................  17

3.3.4Gas orifice diameter ................................................................................  17

3.3.5Status messages.....................................................................................  18

4Transporting the unit ....................................................... 19

4.1Transport information.................................................................... 19

4.2Transporting to the installation site  ............................................ 19

4.2.1Transporting on a pallet...........................................................................  20

4.2.2Transporting without a pallet ...................................................................  20

4.2.3Transporting by raising and lowering ......................................................  22

4.3Unpacking the unit ......................................................................... 22

5Setting up the unit............................................................ 23

5.1Lifting the unit off the pallet .......................................................... 23

5.2Placing the unit on the equipment legs........................................ 24

5.3Setting up the unit on a work surface .......................................... 25

5.4Aligning the unit ............................................................................. 26

5.4.1Aligning countertop units .........................................................................  26

5.4.2Aligning floor-standing units ....................................................................  26

5.5Maintaining minimum clearances................................................. 28

6Connecting the unit.......................................................... 29

6.1Opening and closing the housing................................................. 29

6.1.1Removing and attaching the side panel ..................................................  29

6.2Checking the supply air and exhaust gas routing ...................... 30

6.2.1Description of the supply air and exhaust gas routing.............................  30

6.3Making the electrical connection.................................................. 32

6.3.1Notes regarding the electrical connection ...............................................  32

6.3.2Connecting the electric power cable to the unit.......................................  33

6.3.3Connecting to the potential equalisation circuit .......................................  34

6.4Making the basic control settings ................................................ 35

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3Installation instructions

Directory of contents

6.4.1Opening the Setting menu.......................................................................  35

6.4.2Changing the basic control settings ........................................................  36

6.5Making the water connection ........................................................ 36

6.5.1Connecting hard and soft water ..............................................................  37

6.5.2Connecting soft water twice ....................................................................  38

6.6Making the wastewater connection .............................................. 38

6.6.1Identifying the cleaning system ...............................................................  39

6.6.2Connecting the wastewater line to a permanent connection...................  39

6.6.3Connecting the wastewater line to the discharge funnel .........................  40

6.7Connecting the gas ........................................................................ 41

6.7.1Notes about the gas connection..............................................................  41

6.7.2Description of the gas connection ...........................................................  42

6.7.3Connecting the gas connection line ........................................................  42

6.7.4Checking for leaks...................................................................................  44

6.7.5Checking the connection pressure ..........................................................  45

6.7.6Checking the basic gas setting................................................................  46

6.7.7Adjusting the basic gas setting................................................................  52

6.8Converting the gas type ................................................................ 58

6.9Making the exhaust air connection .............................................. 60

6.10Checking operation...................................................................... 60

6.10.1Checking the exhaust gas routing for leaks ..........................................  61

6.10.2Checking the monitoring of the exhaust gas routing .............................  61

6.10.3Checking the ignition behaviour ............................................................  62

6.10.4Checking the flame pattern ...................................................................  62

6.10.5Checking the flame monitoring..............................................................  63

6.10.6Checking the controls............................................................................  64

6.10.7Checking the monitoring of the cooking zone door ...............................  64

7Putting the unit into service ............................................ 65

7.1Filling out the commissioning report ........................................... 65

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4 Installation instructions

1 Introduction

1.1 About this manual

Introduction

The instruction manual is part of the unit and contains information on safe installation of the unit.

Observe and adhere to the following instructions:

• Read the instruction manual in its entirety prior to installation.

• Make the instruction manual available to the installer at the

operating site at all times.

• Preserve the installation manual throughout the service life of the unit.

• Insert any supplements from the manufacturer.

• Pass on the installation manual to any subsequent operator of the

unit.

Target group The target group for the installation manual is trained technical

personnel that is familiar with installing and operating the unit.

Figures All figures in this manual are intended as examples. Discrepancies

between these and the actual unit can arise.

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5Installation instructions

Introduction

1.1.1 Explanation of signs

DANGER Imminent threat of danger

Failure to comply will lead to death or very severe injuries.

WARNING Possible threat of danger

Failure to comply can lead to death or very severe injuries.

CAUTION Dangerous situation

Failure to comply can cause minor or moderate injuries.

ATTENTION Material damage

Failure to comply can cause material damage.

Notes for better understanding and operation of the unit.

Symbol / sign Meaning

• Listing of information.

Action steps, which can be performed in any sequence.

Action steps, which must be performed in the prescribed sequence.

Result of a listed action.

6 Installation instructions

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1.2 Use of the unit

1.3 Warranty

Introduction

This unit is intended to be used solely for commercial purposes, particularly in commercial kitchens.

This unit is not intended for the US and Canadian markets. It is not permitted to be used there.

The warranty is void and safety is no longer assured in the event of:

• Modifications or technical changes to the unit,

• Improper use,

• Incorrect startup, operation or maintenance of the unit,

• Problems resulting from failure to observe these instructions.

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7Installation instructions

Safety information

2 Safety information

Ensuring conformity with

standards

Improper installation Risk of property damage and personal injury from improper

Transportation and storage Risk of personal injury and property damage from improper

Observe applicable international, European and national laws, regulations, standards and directives for the unit when transporting, setting up and connecting it.

installation

• Install the unit only as specified in these installation instructions.

• Do not add anything to the unit or modify the unit.

• Use only original spare parts.

transportation and improper storage.

• Store the unit in a dry, frost-free environment.

• Observe the safety regulations for the lifting gear used.

• Attach the unit to the lifting gear securely during transport and

setup, and prevent it from dropping.

• Transport the unit in an upright position, do not tilt or stack.

• Pay attention to protruding parts when transporting the unit

without packaging.

Fire prevention Risk of fire from combustible surfaces

• Observe general fire prevention regulations.

• When setting up the unit in close proximity to heat-sensitive

substances or substances that pose a risk of fire, observe fire prevention regulations.

• The room's ceiling above the unit must be non-combustible.

Risk of fire from objects

• Do not obstruct the exhaust gas duct.

Organisational measures Risk of property damage and personal injury from lack of

organizational measures

• Identify hazard areas when transporting, setting up and

connecting the unit.

• Prior to starting the installation work, notify any operators present about the procedure.

• Prior to starting the installation work, discuss how to behave in an emergency.

• Use equipment and protective gear suitable for the activity.

• Brace housing components to prevent them from falling over and

dropping.

8 Installation instructions

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Setup Risk of property damage and personal injury from improper

setup

• Ensure that the installation area has adequate load-bearing

capacity.

• Wear safety shoes and protective gloves.

Electrical connection Risk of fire from improper connection

• Observe applicable regional regulations of the electrical utility.

• Ensure that only licensed electricians connect the unit.

• Ensure that the electrical system is earthed by a protective

earthing conductor.

• Note the information on the nameplate.

Risk of electric shock from live components.

• Prior to working on the electrical system, switch off the unit,

disconnect the electrical system from the mains and prevent power from being switched on again. Check to ensure absence of voltage.

Safety information

• Use only insulated tools.

Gas connection Risk of explosion and fire from improper connection

• Observe applicable regional regulations of the gas utility.

• Ensure that only a licensed tradesman connects the unit to the

gas supply.

• Prior to working on the gas system, switch off the unit, close the gas supply from the gas system and secure it against being reopened. When bleeding air or degassing, ensure that the air and gas are discharged to the outside in a technically correct manner and without creating a risk.

• Observe the information on the nameplate and

Gas type

supplemental label.

• Check for leaks.

• When working on the gas system and units in buildings, ensure

that a hazardous gas-air mixture cannot form in the rooms.

Risk of poisoning from exhaust gases

• Ensure that exhaust gases are discharged properly and that the

necessary amount of combustion air is supplied.

10014471-0AIBE-A

• Ensure that a maximum CO value of < 0.1 vol. % or < 1000 ppm is achieved in undiluted exhaust gas.

Risk of fire from combustion gases and hot surfaces

• Maintain an adequate distance from grease filters on ventilation

systems.

9Installation instructions

Safety information

Additional connection work Risk of physical damage and personal injury from improper

connection

• Prior to working on the unit, switch off the unit, disconnect the unit

from the mains and prevent power from being switched on again. Check to ensure absence of voltage.

• Prior to working on the unit, switch off the unit, close the gas supply and secure it against being reopened.

• Route connection lines such that they cannot be damaged from heat.

Commissioning Risk of property damage and personal injury from improper

commissioning

• Read the operating instructions prior to commissioning. Observe

the safety instructions in this installation manual and in the "Safety information" chapter of the operating instructions.

• Put the unit into service only after a successful function test following assembly.

• Put the unit into service only after it has reached room temperature.

• Observe the units during operation.

10 Installation instructions

10014471-0AIBE-A

3 Description of the unit

3.1 Overview of the unit

Description of the unit

Image: Gas-FlexiCombi Classic, unit size 10

a Cooking zone door h Wastewater connection b Door handle i Opening for power connection c Operating elements j Gas connection on unit

10014471-0AIBE-A

d Hand shower k Potential equalisation connection e Equipment leg, vertically ad-

justable

f Hard water connection m Waste gas connection

g Soft water connection n Air intake connection fitting

l Steam outlet connection fitting

11Installation instructions

Description of the unit

Image: Gas-FlexiCombi Classic, size 20

a Cooking zone door i Opening for power connection b Door handle j Gas connection on unit c Operating elements k Potential equalisation connection d Hand shower l Air intake connection fitting e Equipment leg, vertically ad-

justable

f Hard water connection n Steam outlet connection fitting

g Soft water connection o Waste gas connection, upper fan-as-

h Wastewater connection

m Waste gas connection, burner 2

sisted gas burner

12 Installation instructions

10014471-0AIBE-A

3.2 Planning drawing

Description of the unit

Image: Unit sizes 6 and 10

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Image: Unit size 20

Unit size a b c d e f g h

6.15, 6.21 50 1020 50 50 799 790 850 1640

10.15, 10.21 50 1020 50 50 799 1060 580 1640

20.15, 20.21 50 1075 50 50 813 --- --- 1960

a-h= mm

13Installation instructions

Description of the unit

3.3 Equipment and connection data

Unit size

6.15 6.21 10.15 10.21 20.15 20.21

Dimensions

Unpacked unit Length x width x height (cm)

Packaged unit Length x width x height (cm)

Weight

Unpacked unit (kg) 137 142 167 187 355 355

Packaged unit (kg) 170 170 195 195 375 375

Heat output

Latent (W) 2200 3400 3600 5200 7200 10400

Sensible (W) 1700 2600 2700 3900 5400 7800

Noise level (db(A)) < 70

Ambient climate 5 – 40 °C, 95 % relative humidity, non-condensing

Power connection

Type of connection 1NPE 220–240V AC 50/60Hz

Protection class IPX5

Connected load (kW) 0.6 1.0

102 x 80 x79102 x 80 x79102 x 80 x

106

96 x 108 x 102

2PE 220–240 V AC 50/60 Hz

1NPE 100 V AC 50/60 Hz

96 x 108 x 102

96 x 108 x 128

102 x 80 x 106

96 x 108 x 128

108 x 82 x 196

96 x 116 x 220

108 x 82 x 196

96 x 116 x 220

Recommended fuse (A) 16

Soft water connection

Carbonate hardness CaCO (mmol/l)

Chloride Cl (mg/l) < 50

Iron Fe (mg/l) < 0.1

Connection pressure (hPa), (bar)

Connection (inches) R 3/4, male thread

Hard water connection

Carbonate hardness CaCO (mmol/l)

Connection pressure (hPa), (bar)

Connection (inches) R 3/4, male thread

Wastewater connection

Discharge temperature (°C) < 80

Connection (mm) Connection fitting, 50 mm diameter

Gas connection

< 0.9

200 – 600, 2 – 6

< 4

200 – 600, 2 – 6

14 Installation instructions

10014471-0AIBE-A

Description of the unit

Unit size

6.15 6.21 10.15 10.21 20.15 20.21

Rated heat input (kW) 11 17 18 26 36 52

Gas type The gas type for which the unit is set is indicated on the gas type supplemental label.

Gas connection (inches) R 3/4, male thread EN 10226-1

Connection pressure (mbar)

Natural gas 2H, 2E, 2L, 2LL **

Connection pressure (mbar)

Liquefied gas 3B/P, 3P **

Natural gas E/H, G20 (m3/h)* 1.14 1.76 1.87 2.70 3.74 5.40

Natural gas LL/L, G25 (m3/h)* 1.33 2.05 2.17 3.14 4.35 6.28

Natural gas 13A, G21 (kcal/h) 9500 14600 15500 22400 31000 44700

Liquefied gas B, G30 (kg/h) 0.87 1.34 1.42 2.05 2.84 4.10

Liquefied gas P G31 (kg/h) 0.85 1.32 1.40 2.02 2.80 4.04

LP gas B/P G30/G31 (kg/h) 0.87 1.34 1.42 2.05 2.84 4.10

Combustion air (m3/h)* 15.0 22.5 22.5 32.5 45.0 65.0

Supply air and exhaust gas routing

Required delivery pressure B

(Pa)

13BS

Exhaust gas temperature B

13BS

0 – 5

170 230 195 240 205 250

(°C)

Exhaust gas mass flow rate B

(kg/h)

13BS

30 47 49 71 99 142

Primary air gap (cm) 3 – 5

*) Information applies at 15 °C and 1013.25 mbar

**) Information is country-specific and applies in Germany; for further information, see "Checking the connection pressure"

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15Installation instructions

Description of the unit

3.3.1 Connection pressure

Gas connection pressure

Gas type Connection pressure (mbar) Connection pressure range (mbar)

Germany:

Natural gas 2H, 2E, 2L (LL) 20 17 (18) – 25

Liquefied gas 3B/P, 3P 50 42.5 – 57.5

Europe:

Natural gas 2E, 2H, (LL) 20 17 (18) – 25

Natural gas 2E+, (2L) 20/25 (25) 17 (20) – 30

Liquefied gas 3B/P, 3P 50 42.5 – 57.5

Liquefied gas 3B/P (3P) 29 (30) 25 – 35

Liquefied gas 3+ (3P) 28 – 30/37 (37) 20 (25) – 45

Liquefied gas 3B 29 20 – 35

Asia:

Natural gas13A 20 10 – 25

LP gas B/P 28 23 – 33

3.3.2 Speed of the fan-assisted gas burner

Unit size Gas blower speed (rpm)

High output (HI) Low output (LO)

6.15 5050 * 4800

6.21 6700 4800

10.15 5050 2800

10.21 6700 2800

20.15 5050 2800

20.21 6700 2800

* In deviation from the table, for unit size 6.15 the gas blower speed at the described setting and upon verification of the rated heat input is 5500rpm.

16 Installation instructions

10014471-0AIBE-A

3.3.3 Exhaust gas values

Description of the unit

Gas type

Natural gas

Liquefied gas, propane

Liquefied gas, butane

* At low output (LO) 0.5 - 1.0 lower than at high output (HI)

** Adjustment aid, offset pressure applies only at low output (LO)

** Undiluted exhaust gas

Output Unit size CO2 (vol. %) * p

Range optimal Range optimal Range optimal

HI All units 8.6 - 9.6 9.2 --- --- 0 - 1000 <100

LO 6.1, 6.2 0.5 - 1.0 0.6 -0.8 - 0 -0.55

LO 10.1, 10.2,

20.1, 20.2

HI All units 10.0 - 10.6 10.3 --- ---

LO 6.1, 6.2 0.5 - 1.0 1.0 -0.8 - 0 -0.55

LO 10.1, 10.2,

20.1, 20.2

HI All units 11.5 - 12.5 11.8 --- ---

LO 6.1, 6.2 0.5 - 1.0 1.0 -0.8 - 0 -0.55

LO 10.1, 10.2,

20.1, 20.2

0.5 - 1.0 0.6 -0.4 - 0 -0.15

0.5 - 1.0 1.0 -0.4 - 0 -0.15

3.3.4 Gas orifice diameter

(hPa) ** CO (ppm) ***

offset

Unit size Orifice size (1/100 mm)

Natural gas E/H

G20

6.15 650 720 N/A* 470

6.21 600 680 N/A* 460

10.15 565 650 N/A* 420

10.21 565 630 N/A* 420

20.15 565 650 N/A* 420

20.21 565 630 N/A* 420

*) For information on manually setting the rated heat input, see "Adjusting the basic gas setting".

Natural gas LL/L

G25

Natural gas13A

G21

Liquefied gas B/P

G30/G31

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17Installation instructions

Description of the unit

G1F1

CO2

85°C

CO2

2800

G0F0

CO2

G1F0

CO2

G1F1

CO2

Err

CO2

Err

CO2

Err

CO2

3.3.5 Status messages

Burner operation

Display Meaning

HI = High output

CO2 = CO2 measurement

G1 = Gas supply open (gas solenoid valve open)

F1 = Flame present (burner on)

85°C = Current cooking zone temperature

CO2 = CO2 measurement

2800 = Gas blower speed (rpm)

Burner status messages

Display Meaning

G0 = Gas supply closed (gas solenoid valve closed)

F0 = No flame (burner off)

G1 = Gas supply open (gas solenoid valve open)

F0 = No flame (burner off)

G1 = Gas supply open (gas solenoid valve open)

F1 = Flame present (burner on)

Burner error messages

Display Meaning Possible cause Remedy

Err = Error Gas valve closed.

CO2 = CO2 measurement

71 = No gas

Err = Error Power supply inter-

CO2 = CO2 measurement

72 = Blower not running

Err = Error Wrong gas quality Contact customer service

CO2 = CO2 measurement

73 = General gas error

Air in the gas line.

rupted. Error in the control electronics.

Open the gas valve and repeat ignition.

Contact customer service

18 Installation instructions

10014471-0AIBE-A

4 Transporting the unit

4.1 Transport information

Image: Crossing a grate with the tray trolley

Prior to transporting the unit to the installation site, ensure that:

• The route has adequate load-bearing capacity; place rails or metal plates underneath if necessary.

• Wall openings are large enough. Removing the packaging reduces the clear width required (see "Equipment and connection data").

Transporting the unit

“

4.2 Transporting to the installation site

CAUTION Risk of property damage and personnel injury from tipping equipment

• Do not linger next to or behind raised equipment.

• Move raised equipment carefully.

ATTENTION Risk of physical damage from improper transport

• Transport the unit upright.

• Do not tilt or stack the unit.

• Pay attention to protruding parts when transporting the unpacked unit.

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19Installation instructions

Transporting the unit

4.2.1 Transporting on a pallet

1. Move the pallet truck under the pallet.

2. Raise the unit on the pallet.

Image: Transporting the unit on a pallet

3. Move the unit to the installation site.

4.2.2 Transporting without a pallet

ATTENTION Risk of physical damage from improper lifting of the unit

• Lift size 6 and size 10 units only with the aid of wooden beams placed underneath.

Unit sizes 6 and 10

Requirement Packaging removed except for the pallet

1. Move the pallet truck under the unit from the right.

2. Place the wooden beams on the lift forks and slide under the unit.

3. Lift the unit off the pallet.

20 Installation instructions

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Image: Transporting unit sizes 6 and 10 without a pallet

4. Move the unit to the installation site.

Unit size 20

Transporting the unit

Requirement Packaging removed except for the pallet

1. Move the pallet truck under the guide rails of the unit from the right.

2. Lift the unit off the pallet.

Image: Transporting unit size 20 without a pallet

10014471-0AIBE-A

3. Move the unit to the installation site.

21Installation instructions

Transporting the unit

4.2.3 Transporting by raising and lowering

DANGER Risk of fatal injury from falling unit

• Do not linger under a suspended load.

• Cordon off hazard area in compliance with regulations.

ATTENTION Risk of physical damage from tightened lifting straps

• Always lift the unit with lifting straps and a spreader bar.

1. Guide the lifting straps under the pallet and attach them to the spreader bar.

2. Brace the unit to prevent tipping.

3. Carefully lift the unit onto the pallet.

4.3 Unpacking the unit

CAUTION Risk of injury from sharp edges

• Wear protective gloves.

When unpacking the unit, inspect it for transport damage. Do not install damaged units or put into service. Enter the information from the nameplate into the commissioning report.

1. Remove the packaging.

2. Pull the protective film off the unit.

3. Remove the packaging material from the cooking zone completely.

4. Lift the unit off the pallet and place in position.

5. Clean the unit (see "Cleaning and maintaining the unit").

6. Separate and dispose of the packaging material.

22 Installation instructions

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5 Setting up the unit

The supply air and exhaust gas openings in the unit must not be obstructed or closed.

WARNING Risk of burns from spraying hot fat

• Set up deep fat fryers outside the range of the hand shower.

CAUTION Risk of crushing from improper setup

• Protect the unit and work area during setup and alignment.

CAUTION Risk of fire from failure to observe applicable regional fire prevention regulations

• Observe applicable regional fire prevention regulations.

Setting up the unit

ATTENTION Risk of physical damage from overheating of the unit

• Do not set up the unit close to heat sources.

5.1 Lifting the unit off the pallet

CAUTION Risk of property damage and personnel injury from tipping equipment

• Do not linger next to or behind raised equipment.

• Move raised equipment carefully.

ATTENTION Risk of physical damage from lifting the unit incorrectly

• Place the forks of the lift truck next to the waste trap.

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23Installation instructions

Setting up the unit

Requirement Unit unpacked

Protective film removed Unit cleaned

Image: Lifting the unit off the pallet

1. Slide the forks of the pallet truck under the unit and to the right of the waste trap.

2. Lift the unit off the pallet.

5.2 Placing the unit on the equipment legs

Requirement The floor must carry the weight of the unit

1. Lift the unit with the pallet truck.

2. Move the unit to the installation site.

3. Place the unit on the floor.

4. Set up the unit in accordance with the planning drawing Planning drawing .

24 Installation instructions

10014471-0AIBE-A

5.3 Setting up the unit on a work surface

Requirement The base frame must carry the weight of the unit

Base frame levelled Base frame set up in accordance with the planning drawing Planning

drawing

1. Lift the unit.

Setting up the unit

Image: Setting up the unit on a work surface

a Lift fork d Stud bolt b Waste trap on the unit e Equipment leg c Base frame f Unit

2. Place the unit over the stud bolts on the work surface.

CAUTION Risk of burns from missing stickers

• Attach stickers if the upper insertion rails are higher than

1.60 m.

Image: Attach warning sign regarding insertion height

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25Installation instructions

Setting up the unit

3. Clean the adhesion surface for the sticker.

4. Attach the sticker to the cooking zone door at a height of 1.6 m.

5.4 Aligning the unit

5.4.1 Aligning countertop units

Requirement Base frame levelled

1. Place a spirit level on the unit.

2. Screw the equipment legs in or out to level the unit.

5.4.2 Aligning floor-standing units

The tray trolley is needed to align a floor-standing unit.

Prepare the tray trolley.

ATTENTION Risk of water discharge from leaking cooking zone

The cooking zone will leak if the tray trolley is not aligned.

• Operate a floor-standing unit only with the tray trolley.

• Align the tray trolley carefully.

1. Screw the equipment legs in or out to align the unit.

2. Open the cooking zone door.

26 Installation instructions

10014471-0AIBE-A

Setting up the unit

Image: Aligning the unit with the tray trolley

a Tray trolley d Equipment leg b Distance between roller and sup-

port rail

c Support rail

e Roller

3. Place the tray trolley against the support rails.

4. Screw the equipment legs in or out until the rollers are 1 to 5 mm above the support rails.

5. Retract the tray trolley.

6. Level the support rails.

7. Push the tray trolley against the unit until it stops.

8. Remove the push handle.

9. Close the cooking zone door.

The unit is aligned correctly.

10014471-0AIBE-A

27Installation instructions

Setting up the unit

500 - 800

500

5.5 Maintaining minimum clearances

Image: FlexiCombi minimum clearances

a Ceiling c Deep-fat fryer b Baking oven

The following clearances from walls, ceilings or other equipment must be provided when setting up the unit:

• Left, right and behind: at least 50 mm.

• For service work, 500 mm at left recommended.

• For parking the tray trolley, 800 mm at left.

• From heat sources (baking ovens), 500 mm at the left so that the

cooling air for the unit is not heated.

• Distance to deep-fat fryers, left and right, at least one length of the hand shower so that no water can be sprayed into the hot deep-fat fryer.

• To ceilings, at least 500 mm. There must be no water, gas or electric lines in the ceiling above the unit.

28 Installation instructions

10014471-0AIBE-A

6 Connecting the unit

6.1 Opening and closing the housing

DANGER Risk of personal injury and physical damage from electric shock

• Prior to working on the unit, ensure that the unit has been disconnected from the mains.

• Do not operate the unit with the housing open.

CAUTION Risk of injury from sharp edges

• Wear protective gloves.

ATTENTION Risk of physical damage from damage to the lines

Connecting the unit

• Remove and attach housing components carefully.

6.1.1 Removing and attaching the side panel

Removing the side panel

1. Unscrew the bolts on the bottom of the side panel.

2. Pull the bottom of the side panel forward.

Image: Removing and attaching the side panel

10014471-0AIBE-A

3. Remove the side panel.

29Installation instructions

Connecting the unit

Attaching the side panel

ATTENTION Risk of physical damage from squeezing the lines

When attaching the side panel, make sure that no lines are squeezed.

1. Insert the top edge of the side panel.

ATTENTION Risk of physical damage from a loose side panel

• Check seals when attaching the housing parts

• Replace damaged seals

• The side wall must be in contact with the unit on all sides.

2. Carefully push the bottom of the side panel inward.

3. Secure the bottom of the side panel with bolts.

4. Check that the side panel is in contact with the unit on all sides.

6.2 Checking the supply air and exhaust gas routing

Routing of the supply air and exhaust gas must comply with the national and regional laws, regulations, standards and directives.

6.2.1 Description of the supply air and exhaust gas routing

WARNING Risk of poisoning from exhaust gases

• Ensure that exhaust gases are routed to the outside.

• Install the unit below or at ventilation systems.

• For type B devices: Connect unit to ventilation system or chimney.

• Ensure that the unit can be operated only when the ventilation system is switched on.

WARNING Risk of burns and fire from the high temperature of the exhaust gas

The temperature of the exhaust gas can be up to 400 °C.

• Do not touch the exhaust gas opening or its cover.

• Do not place any objects in close proximity to the exhaust gas opening or on the unit.

Installation room requirements

• An adequate supply air from outside joints and openings to the

outside or an HVAC system is assured.

• Routing of exhaust gas to the outside is assured.

30 Installation instructions

10014471-0AIBE-A

Connecting the unit

13BS

b c d

13BS

• Routing of the supply air and exhaust gas must not impair proper operation (for example by underpressure).

• A safety device must ensure that gas can be supplied only when the ventilation system is switched on.

• How the exhaust gas is routed depends on the unit type:

– Type A unit: Indirect routing of exhaust gas via ventilation

systems such as a ventilated ceiling or ventilation hood.

– Type B units: Direct routing of exhaust gas via ventilation

system or chimney.

Image: Indirect exhaust gas routing

a Ventilation hood d Flow control b Steam outlet connection fitting e Exhaust gas duct c Waste gas connection f Ventilated ceiling

Image: Direct exhaust gas routing

a Ventilation system or chimney d Waste gas connection b Exhaust gas duct e Steam outlet connection c Flow control

10014471-0AIBE-A

1. Ensure that all conditions in this section are satisfied.

31Installation instructions

Connecting the unit

2. Ensure that the supply air and exhaust gas routing is unobstructed.

3. Ensure that supply air and exhaust gas routing functions properly.

4. Fill out the commissioning report.

6.3 Making the electrical connection

6.3.1 Notes regarding the electrical connection

Installation work Electrical installation work must be performed by a licensed

electrician. Comply with the local regulations of the electric utility.

The unit must be connected on the basis of the information on the nameplate and this manual.

Electric power cable An electric power cable of the type HO7RN-F must be used to

connect the unit to the electric mains.

Residual-current protective

device

The unit can be connected to a residual-current protective device. The residual-current protective device must incorporate a residualcurrent protective switch of type B (RCD Type B) in order to detect AC fault currents, pulsating DC currents and continuous DC currents.

Image: RCD switch type B circuit symbol

The unit generates a small fault current through use of special electronic components. To ensure that the residual current device does not trip during normal operation, each unit must have its own residual current device.

Equipotential bonding The unit must be incorporated into the potential equalisation circuit

through use of the specified minimum wire sizes.

Permanent connection

CAUTION Risk of property damage and personal injury from improper installation

• In the case of a permanent electrical connection, install an all-phase disconnect switch before the unit.

Install an all-phase disconnect switch if the unit will be connected permanently to the electric mains.

32 Installation instructions

10014471-0AIBE-A

Plug-in connection

CAUTION Risk of property damage and personal injury from improper installation

• The plug-in connection must be readily accessible.

If the unit will be connected to the electric mains by a plug, use a plug and socket that comply with IEC 60309. The socket must be readily accessible so that the unit can be disconnected from the electric mains at any time.

6.3.2 Connecting the electric power cable to the unit

Connecting the unit

Image: Connecting the electric power cable

a Connection terminals c Electric power cable b Cable tie d Cable gland

Length of connection cable in the unit

10014471-0AIBE-A

Model Length (mm)

6.15, 6.21 1000

10.15, 10.21 1200

20.15, 20.21 720

33Installation instructions

Connecting the unit

L1X1N

Requirement Electrical connection to the unit matches the information on the

Image: Gas Combisteamer terminal assignment

L1 Phases PE Protective earth

N Neutral conductor X1 Mains connection

nameplate Housing open Electric power cable sufficiently long

1. Insert the electric power cable into the unit through the cable gland.

2. Connect the electric power cable in accordance with the terminal diagram.

3. Secure the electric power cable to the unit with cable ties.

4. Tighten the cable gland securely to provide strain relief.

6.3.3 Connecting to the potential equalisation circuit

Image: Potential equalisation connection

1. Connect the potential equalisation line to the location on the unit identified with the corresponding symbol.

2. Fill out the commissioning report.

34 Installation instructions

10014471-0AIBE-A

6.4 Making the basic control settings

START

STOP

STEP

Clean

Programs

ClimaSelect

By entering the password "2100", the basic settings for the installation can be displayed and changed.

6.4.1 Opening the Setting menu

Connecting the unit

Image: FlexiCombi Classic control panel

On Off

Select

knob h "STEP" button c Center display i Left knob d Right display j Left display e Right knob k Indicator light

Ready2cook

Requirement The unit is on

1. Turn the

The indicator light illuminates.

The left display shows "PASS".

The right display flashes "0000".

2. Use the right not to set the password.

The right display shows the set password.

3. Press the "START STOP" button.

The left display flashes "HAC".

4. Use the left knob to select OPt.

The left display flashes "OPt".

The basic settings can be changed.

button g "START STOP" button

button

Select

knob to the

Settings

symbol.

10014471-0AIBE-A

35Installation instructions

Connecting the unit

6.4.2 Changing the basic control settings

1. Press the "START STOP" button.

The left display flashes the first number of the basic setting;

refer to the of basic settings table.

The centre display shows "OPt".

The right display shows the first set value.

2. Turn the left knob.

Set number.

3. Press the "START STOP" button.

The basic setting can be adapted.

4. Turn the right knob.

Set new value.

5. Press the "START STOP" button.

Accept changes.

6. Press and hold the "STEP" button for 3 seconds.

The changes are saved.

The left display flashes "OPt".

The centre display shows "Stor".

7. Press the "STEP" button to leave the Settings menu.

Parameter no.

1 Temperature unit

2 Setup height 0 0 = 0 - 999 m

4 Ready2Cook pre-

5 Exhaust hood run

33 Audible signal

Description Standard value Input range

0 0 = °C

setting

15 % 0 - 30 %

heating temperature

60 s 0 - 600 s

time extension

0 0 = quiet

volume

1 = °F

1 = 1000 - 1999 m

2 = 2000 - 2499 m

3 = 2500 m or higher

1 = loud

37 Hold time after

reaching the Ready2Cook-temperature

6.5 Making the water connection

Installation work involving drinking water must be performed by an authorised plumbing contractor. Observe applicable regional regulations with regard to drinking water installations and connection data (see "Equipment and connection data").

36 Installation instructions

240 min 0 - 600 min

10014471-0AIBE-A

6.5.1 Connecting hard and soft water

The unit is equipped with a connection for:

• Soft water for generating steam

• Hard water for cooling, rinsing and WaveClean

CAUTION Hygiene risk from contaminated drinking water

• The connection to the drinking water supply must be equipped with a backflow preventer.

Always connect both water connections to the unit.

ATTENTION Risk of physical damage from the wrong water quality

• Ensure that the water quality complies with the equipment and connection data.

Connecting the unit

Image: Hard and soft water connection

a Soft water tap e Hard water connection b Backflow preventer, installed f Hard water hose c Hose, soft water g Backflow preventer, installed d Soft water connection h Hard water tap

Requirement Water quality meets specifications

Backflow preventers installed Required water pressure available Pressure-resistant hoses suitable for drinking water available

1. Connect the hoses to the water taps.

10014471-0AIBE-A

2. Open the water taps and flush the hoses.

3. Insert a dirt filter into the hard and soft water connections.

4. Connect hoses to the unit.

5. Open the water taps and check the threaded fittings for leaks.

37Installation instructions

Connecting the unit

d e

6.5.2 Connecting soft water twice

If only a soft water connection is available at the installation site, the hard water connection and the soft water connection must be connected by means of a T-piece.

Image: Connect saltwater connection twice

a Soft water tap e Hard water connection b Backflow preventer f Dirt filter c Hose, soft water g T-piece d Soft water connection h Seal

Requirement Hose connected to soft water tap

1. Insert a dirt filter into the hard and soft water connections.

2. Connect the T-piece with seals.

3. Connect hose with seal to the T-piece.

4. Open the soft water tap and check the threaded fittings for leaks.

6.6 Making the wastewater connection

Installation work involving wastewater must be performed by an authorised plumbing contractor. Observe the applicable regional regulations of the sewage utility involved.

38 Installation instructions

10014471-0AIBE-A

6.6.1 Identifying the cleaning system

FlexiCombi Classic units can be equipped with either an automatic or manual cleaning system. The pictogram on the control panel shows which cleaning system is installed.

Cleaning system Sewer system connection

Connecting the unit

Permanent connection, with on-site waste trap:

Automatic cleaning system Pictogram on control panel

Manual cleaning system Pictogram on control panel

Install a vacuum breaker in the wastewater line.

Unobstructed discharge with funnel waste trap:

With an on-site waste trap, connect only discharge funnel.

6.6.2 Connecting the wastewater line to a permanent connection

Image: Wastewater line permanent connection

a Wastewater connection d Wastewater system trap b Wastewater line e Pipe clamp c Wastewater system f Vacuum breaker valve

If a waste trap is installed in the wastewater system, a vacuum breaker must be installed in the wastewater line.

Requirement Polypropylene (PP) pipes and elbows

• Heat-resistant to 95 °C

• Nominal diameter 50 mm

• Maximum pipe length 1.0 m

10014471-0AIBE-A

39Installation instructions

Connecting the unit

1. Install wastewater line up to connection to the sewer system

2. Secure the wastewater line with clamps.

3. Fill the waste trap on the unit with drinking water.

6.6.3 Connecting the wastewater line to the discharge funnel

Image: Connecting the wastewater line to the discharge funnel

a Wastewater connection d Wastewater system b Wastewater line e Wastewater system trap c Funnel waste trap f Discharge funnel

Connect only the discharge funnel if a wastewater trap is installed in the wastewater system.

Requirement Polypropylene (PP) pipes, elbows, discharge funnel and waste trap

• Heat-resistant to 95 °C.

• Nominal diameter 50 mm

• Maximum pipe length 1.0 m

1. Connect the discharge funnel with waste trap to the wastewater system.

2. Connect the wastewater line to the unit and extend it to the discharge funnel.

3. Secure the wastewater line with clamps.

4. Place the wastewater line discharge 2 cm above the discharge funnel.

5. Fill water into the discharge funnel.

40 Installation instructions

10014471-0AIBE-A

6.7 Connecting the gas

6.7.1 Notes about the gas connection

Gas installation work on the gas system and the unit may be performed only by a licensed tradesman approved by the gas utility.

Observe the applicable regional regulations of the gas utility.

DANGER Risk of fatal injury from operating the unit with the wrong gas type

• Ensure that the gas type for which the unit is set (see gas type supplemental label) matches the gas type available at the site.

• Ensure that the unit is suitable for the available gas type (see nameplate).

The unit is a Category II multi-gas unit and is intended for operation with natural gas or liquefied gas (LPG).

Connecting the unit

The unit must be connected on the basis of the information on the nameplate, gas type supplemental label and this manual.

The gas type for which the unit is set is indicated on the gas type supplemental label.

The connection pressure and the category are indicated on the nameplate. The gas types for which the unit is intended can be identified from the category.

Before the gas connection line can be connected to the unit, the following conditions must be satisfied:

• The gas type for which the unit is set must match the gas type available at the site. If this is not the case, the unit must be converted to the gas type available (see "Converting the gas type"). Based on the category, check whether the unit is intended for the gas type available.

• All parts of the gas system must be approved for use with gas.

• The gas shut-off valve for the unit must be readily accessible.

• The diameter of the gas connection line must not be smaller than

that of the connection on the unit.

Permanent connection The unit is intended for a permanent connection. The connection line

10014471-0AIBE-A

• The gas connection and the gas connection line must be positioned such that they cannot be damaged by heat.

must be flexible. Route the flexible gas connection line or gas hose in accordance with the manufacturers specification without being stressed, kinked or twisted.

41Installation instructions

Connecting the unit

Shut-off device The unit or the gas connection line must be equipped with a thermally

activated shut-off. In strictly commercial buildings, a thermally activated shut-off is not necessary if the objective of providing fire and explosion safety is achieved by other means.

6.7.2 Description of the gas connection

Image: FlexiCombi gas connection

a Gas shut-off valve c Gas connection on unit b Gas connection line

6.7.3 Connecting the gas connection line

DANGER Risk of personal injury and physical damage from electric shock

• Inspection and adjustment work that can be carried out only with the housing open and the unit under power must be performed only by electrically trained technical personnel.

ATTENTION Risk of physical damage from improper gas connection

• Do not mix up gas connection with water connections.

• If the gas connection was mixed up with the water connections, contact customer service.

Requirement Notes about the gas connection observed

Gas shut-off valve closed Unit disconnected from power Left side wall removed

42 Installation instructions

1. Connect unit to the gas connection line.

10014471-0AIBE-A

Connecting the unit

ATTENTION Risk of physical damage from excessively high pressure

• When opening the gas shut-off valve on the unit, ensure that the pressure in the gas connection line is <150 mbar.

• If the pressure is >150 mbar, close the gas supply, reduce the pressure in a technically correct manner and notify the gas utility.

2. Open the gas shut-off valve on the unit, while paying attention to the pressure in the gas connection line.

DANGER Risk of explosion and fire from escaping gas

• When bleeding air from or degassing the gas system and the unit, ensure that the air and gas are discharged to the outside in a technically correct manner and without creating a risk.

3. Bleed air from the gas system and unit in a technically correct manner.

4. Check for leaks outside the unit.

WARNING Risk of poisoning from exhaust gases

• Ensure that exhaust gases are discharged properly and that the necessary amount of combustion air is supplied.

• Ensure that a maximum CO content of < 0.1 vol. % or < 1000 ppm is achieved in undiluted exhaust gas.

5. Switch on the unit.

6. Check the connection pressure (see "Checking the connection pressure").

7. Check for leaks inside the unit (see "Checking for leaks").

8. Check the ignition behaviour (see "Checking the ignition behaviour").

9. Check the flame pattern (see "Checking the flame pattern").

10.Check the basic gas setting (see "Checking the basic gas setting").

11.Switch off the unit.

12.Close the housing (see "Opening and closing the housing").

13.Fill out the commissioning report.

10014471-0AIBE-A

43Installation instructions

Connecting the unit

6.7.4 Checking for leaks

Requirement Gas connection line connected

Left side wall removed

DANGER Risk of explosion and fire from leaking, gas-conducting parts

• Check the gas connection line and all gas-conducting parts for leaks at the operating pressure.

• Use only bubble-forming agents and gas leak detectors approved for use with gas.

DANGER Risk of personal injury and physical damage from electric shock

• Inspection and adjustment work that can be carried out only with the housing open and the unit under power must be performed only by electrically trained technical personnel.

ATTENTION Risk of physical damage from electrical short-circuits

• Do not spray bubble-forming agents onto electrical components and wires.

Gas leak detectors respond to almost all combustible gases, even CO.

For this reason, ensure that the zero-point calibration of the gas leak detector was performed in fresh air, free of combustible gases. Observe the manufacturer's information.

Checking for leaks outside the unit

1. Open the gas shut-off valve.

2. Before putting the unit into service at operating pressure, check the gas connection line and all gas-conducting parts outside the unit for leaks with a bubble-forming agent or gas leak detector in accordance with the Technical Regulations for Gas Installations.

3. Fill out the commissioning report.

Checking for leaks inside the unit

1. Switch on the unit.

2. Check the connection pressure.

3. Before putting the unit into service at operating pressure, check the gas connection line and all gas-conducting parts inside the unit for leaks with a bubble-forming agent or gas leak detector in accordance with the Technical Regulations for Gas Installations.

4. Switch off the unit.

44 Installation instructions

10014471-0AIBE-A

5. Fill out the commissioning report.

6.7.5 Checking the connection pressure

DANGER Risk of personal injury and physical damage from electric shock

• Inspection and adjustment work that can be carried out only with the housing open and the unit under power must be performed only by electrically trained technical personnel.

Requirement Gas connection line connected

Check for leaks outside the unit conducted Measuring accuracy of the pressure measuring device at least 0.1

mbar Left side wall removed

1. Close the gas shut-off valve on the unit.

2. Unscrew the sealing plug from the connection pressure measuring point.

3. Connect the pressure measuring device.

Connecting the unit

10014471-0AIBE-A

Image: Measuring the connection pressure

a Sealing plug in the connection

pressure measuring point

ATTENTION Risk of physical damage from excessively high pressure

• When opening the gas shut-off valve on the unit, ensure that the pressure in the gas connection line is <150 mbar.

• If the pressure is >150 mbar, close the gas supply, reduce the pressure in a technically correct manner and notify the gas utility.

4. Open the gas shut-off valve on the unit, while paying attention to the pressure in the gas connection line.

45Installation instructions

Connecting the unit

DANGER Risk of explosion and fire from escaping gas

• When bleeding air from or degassing the gas system and the unit, ensure that the air and gas are discharged to the outside in a technically correct manner and without creating a risk.

5. Bleed air from the gas system and unit in a technically correct manner.

6. Switch on the unit.

7. Set the unit to high output (see "Checking the basic gas setting").

The unit operates at maximum output.

8. Measure the connection pressure.

DANGER Risk of fatal injury from operating the unit at a connection pressure outside the specified range

• Do not put the unit into service.

• Notify the gas utility.

9. Check whether the measured connection pressure is within the specified range (see "Connection pressure").

10.Switch off the unit.

11.Close the gas shut-off valve on the unit.

12.Disconnect the pressure measuring device.

13.Tightly screw the sealing plug into the connection pressure measuring point.

14.Open the gas shut-off valve on the unit.

15.Check the connection pressure measuring point for leaks.

16.Fill out the commissioning report.

6.7.6 Checking the basic gas setting

DANGER Risk of personal injury and physical damage from electric shock

• Inspection and adjustment work that can be carried out only with the housing open and the unit under power must be performed only by electrically trained technical personnel.

Requirement Gas connection line connected

Check for leaks outside the unit conducted

Connection pressure checked

Check for leaks inside the unit conducted

Left side wall removed

46 Installation instructions

10014471-0AIBE-A

Checking the rated heat input

WARNING Risk of poisoning from exhaust gases

• Ensure that exhaust gases are discharged properly and that the necessary amount of combustion air is supplied.

• Ensure that a maximum CO content of < 0.1 vol. % or < 1000 ppm is achieved in undiluted exhaust gas.

Requirement Gas shut-off valve on the unit open

Connecting the unit

Image: FlexiCombi, unit size 20

a Burner 1 b Burner 2

1. Switch on the unit.

2. Turn the

Select

knob to the Settings symbol.

The indicator light illuminates.

The left display shows "PASS".

The right display flashes "----".

3. Using the right knob, set "0999".

4. Press the "START STOP" button.

The left display flashes "CO2".

Press the "START STOP" button.

5. Using the left knob, set the burner to high output ("HI").

The left display flashes "HI".

The centre display shows "CO2".

6. Using the right knob, select the first burner "-1-" (only unit size 20).

The right display flashes "-1-".

7. Press the "START STOP" button.

The indicator light in the "START STOP" button flashes; the

burner starts.

10014471-0AIBE-A

The unit operates at maximum output.

47Installation instructions

Connecting the unit

8. Press the

Ready2Cook

button.

The left display shows the current temperature in the cooking

zone.

The centre display shows the selected burner "-1-" (only unit

size 20).

The right display shows the current status of the burner

("G1F1").

9. Press the

Ready2Cook

button.

The left display shows the current temperature in the cooking

zone.

The centre display shows the selected burner "-1-" (only unit

size 20).

The right display shows the burner's gas blower speed.

10.Check whether the displayed speed matches the unit size (see "Speed of the fan-assisted gas burner").

If the displayed speed does not match the speed specified in

the table, contact customer service.

Image: Waste gas measurement – FlexiCombi Classic

a Exhaust gas measuring device c Waste gas connection, burner 2

b Waste gas connection, burner 1 d Exhaust gas connection

11.Measure the CO2 content of the exhaust gas at the exhaust gas connection when the temperature in the cooking zone is between 130-180 °C.

12.Check whether the measured CO2 content is within the specified range (see "Exhaust gas values").

If the CO2 content is not within the specified range, adjust the

basic gas setting (see "Adjusting the basic gas setting").

13.Press the

Ready2Cook

The left display flashes "HI".

The centre display shows "CO2".

48 Installation instructions

(only unit size 20)

button.

10014471-0AIBE-A

Connecting the unit

14.Using the left knob, set the burner to low output ("LO").

The left display flashes "LO".

The centre display shows "CO2".

15.Using the right knob, select the first burner "-1-" (only unit size 20).

The right display flashes "-1-".

16.Press the "START STOP" button.

The indicator light in the "START STOP" button flashes; the

burner starts.

The unit operates at minimum output.

17.Press the

The left display shows the current temperature in the cooking

zone.

The centre display shows the selected burner "-1-" (only unit

size 20).

The right display shows the current status of the burner

("G1F1").

18.Press the

Ready2Cook

button.

The left display shows the current temperature in the cooking

zone.

The centre display shows the selected burner "-1-" (only unit

size 20).

The right display shows the burner's gas blower speed.

19.Check whether the displayed speed matches the unit size (see "Speed of the fan-assisted gas burner").

If the displayed speed does not match the speed specified in

the table, contact customer service.

20.Measure the CO2 content of the exhaust gas at the exhaust gas connection when the temperature in the cooking zone is between 130-180 °C.

21.Check whether the measured CO2 content is within the specified range (see "Exhaust gas values").

If the CO2 content is not within the specified range, adjust the

basic gas setting (see "Adjusting the basic gas setting").

22.Press the

Ready2Cook

button and conduct the measurements for

the second burner in the same way (only unit size 20).

23.To end the CO2 measurement, press the "START STOP" button.

The indicator light in the "START STOP" button goes out; the

burner is switched off.

24.Switch off the unit.

10014471-0AIBE-A

49Installation instructions

Connecting the unit

Requirement Left side wall removed

Checking the primary air quantity

DANGER Risk of personal injury and physical damage from electric shock

• Inspection and adjustment work that can be carried out only with the housing open and the unit under power must be performed only by electrically trained technical personnel.

Image: Primary air gap – FlexiCombi

a Burner b Suction hose

1. Check whether the suction hose is routed without kinks in the location and form shown in the figure.

2. Check whether the suction hose is damaged.

3. Check whether the opening in the suction hose is open and unobstructed.

4. Measure the primary air gap (A).

5. Check whether the measured primary air gap is within the specified range (see "Equipment and connection data").

If any one of the inspection criteria is not satisfied, adjust the

primary air gap (see "Checking the basic gas setting").

6. Check the flame pattern (see "Checking the flame pattern").

If the flame pattern is not OK, adjust the primary air gap (see

"Adjusting the basic gas setting").

7. Fill out the commissioning report.

50 Installation instructions

10014471-0AIBE-A

Checking the exhaust gas values

WARNING Risk of poisoning from exhaust gases

• Ensure that exhaust gases are discharged properly and that the necessary amount of combustion air is supplied.

• Ensure that a maximum CO content of < 0.1 vol. % or < 1000 ppm is achieved in undiluted exhaust gas.

Requirement Left side wall removed

DANGER Risk of personal injury and physical damage from electric shock

• Inspection and adjustment work that can be carried out only with the housing open and the unit under power must be performed only by electrically trained technical personnel.

Connecting the unit

1. Switch on the unit.

2. Set the unit to high output (see "Checking the basic gas setting").

The unit operates at maximum output.

Image: Waste gas measurement – FlexiCombi Classic

a Exhaust gas measuring device c Waste gas connection, burner 2

(only unit size 20)

b Waste gas connection, burner 1 d Exhaust gas connection

10014471-0AIBE-A

3. Measure the CO content of the exhaust gas at the exhaust gas connection when the temperature in the cooking zone is between 130-180 °C.

4. Check whether the measured CO content is within the specified range (see "Exhaust gas values").

5. If the CO content is not within the specified range, adjust the basic gas setting (see "Adjusting the basic gas setting").

6. Press the Ready2Cook button and conduct the measurements for the second burner in the same way (only unit size 20).

7. To end the CO measurement, press the "START STOP" button.

51Installation instructions

Connecting the unit

8. The indicator light in the "START STOP" button goes out; the burner is switched off.

9. Switch off the unit.

10.Fill out the commissioning report.

6.7.7 Adjusting the basic gas setting

Requirement Gas connection line connected

Check for leaks outside the unit conducted

Connection pressure checked

Check for leaks inside the unit conducted

Left side wall removed

Setting the rated heat input

WARNING Risk of poisoning from exhaust gases

• Ensure that exhaust gases are discharged properly and that the necessary amount of combustion air is supplied.

• Ensure that a maximum CO content of < 0.1 vol. % or < 1000 ppm is achieved in undiluted exhaust gas.

Requirement Basic gas setting checked and not OK

Left side wall removed

52 Installation instructions

10014471-0AIBE-A

Connecting the unit

DANGER Risk of personal injury and physical damage from electric shock

• Inspection and adjustment work that can be carried out only with the housing open and the unit under power must be performed only by electrically trained technical personnel.

The offset pressure can be measured as an adjustment aid at minimum output (see " Adjusting the basic gas setting").

Image: Adjustment screws on the burner

a Adjustment screw for low output

(TX40)

1. Open the gas shut-off valve on the unit.

2. Switch on the unit.

3. Set the unit to low output (see "Checking the basic gas setting").

The unit operates at minimum output.

4. Measure the CO2 content of the exhaust gas at the exhaust gas connection when the temperature in the cooking zone is between 130-180 °C.

5. Check whether the measured CO2 content is within the specified range (see "Exhaust gas values").

6. Using the adjustment screw for low output, adjust the CO2 content to the specified range for low output (setting is very sensitive).

Turning anti-clockwise: CO2 content is decreased.

Turning clockwise: CO2 content is increased.

7. Set the unit to high output (see "Checking the basic gas setting").

The unit operates at maximum output.

10014471-0AIBE-A

53Installation instructions

Connecting the unit

8. Check whether the measured CO2 content is within the specified range (see "Exhaust gas values").

If necessary, repeat the adjustment procedure until the CO

value at high and at low output is within the specified range.

If the CO2 content at high output cannot be set to the minimum level, the rated heat input must be adjusted manually (see "Adjusting the basic gas setting").

9. Press the Ready2Cook button and conduct the measurements for the second burner in the same way (only unit size 20).

10.Check the waste gas values (see "Checking the basic gas setting").

11.To end the CO2 measurement, press the "START STOP" button.

12.The indicator light in the "START STOP" button goes out; the burner is switched off.

13.Switch off the unit.

14.Fill out the commissioning report.

Adjusting the primary air quality

Requirement Primary air quantity checked and not OK

Left side wall removed

DANGER Risk of personal injury and physical damage from electric shock

• Inspection and adjustment work that can be carried out only with the housing open and the unit under power must be performed only by electrically trained technical personnel.

Image: Suction hose position

a Burner b Suction hose

1. If the suction hose is not routed without kinks in the location and form shown in the figure, correct or replace the suction hose.

54 Installation instructions

10014471-0AIBE-A

Connecting the unit

2. If the suction hose is damaged, replace it.

3. If the opening of the suction hose is blocked, clean the suction hose.

4. Adjust the primary air gap to within the specified range (A) by aligning the suction hose (see "Equipment and connection data").

5. Check the basic gas setting (see "Checking the basic gas setting").

6. Fill out the commissioning report.

Manually adjusting the rated heat input

WARNING Risk of poisoning from exhaust gases

• Ensure that exhaust gases are discharged properly and that the necessary amount of combustion air is supplied.

• Ensure that a maximum CO content of < 0.1 vol. % or < 1000 ppm is achieved in undiluted exhaust gas.

Requirement Adjustment of basic setting not OK

Gas shut-off valve on the unit closed

Left side wall removed

DANGER Risk of personal injury and physical damage from electric shock

• Inspection and adjustment work that can be carried out only with the housing open and the unit under power must be performed only by electrically trained technical personnel.

The offset pressure can be measured as an adjustment aid at minimum output (see " Adjusting the basic gas setting").

1. Remove the gas orifice (see "Converting the gas type").

10014471-0AIBE-A

55Installation instructions

Connecting the unit

Image: Adjustment screws on the burner

a Adjustment screw for low output

(TX40)

b Adjustment screw for high output

(4 mm hexagon socket or 1.2 x

6.5 mm screwdriver)

2. Screw in adjustment screw for high output 10 mm (basic setting).

3. Open the gas shut-off valve on the unit.

4. Switch on the unit.

5. Set the unit to low output (see "Checking the basic gas setting").

The unit operates at minimum output.

6. Measure the CO2 content of the exhaust gas at the exhaust gas connection when the temperature in the cooking zone is between 130-180 °C.

7. Check whether the measured CO2 content is within the specified range (see "Exhaust gas values").

8. Using the adjustment screw for low output, adjust the CO2 content to the specified range for low output (setting is very sensitive).

Turning anti-clockwise: CO2 content is decreased.

Turning clockwise: CO2 content is increased.

9. Set the unit to high output (see "Checking the basic gas setting").

The unit operates at maximum output.

10.Check whether the measured CO2 content is within the specified range (see "Exhaust gas values").

11.Using the adjustment screw for high output, adjust the CO

content to the specified range for high output (setting is very sensitive).

Turning anti-clockwise: CO2 content is increased.

Turning clockwise: CO2 content is decreased.

If necessary, repeat the adjustment procedure until the CO

value at high and at low output is within the specified range.

12.Press the Ready2Cook button and conduct the measurements for the second burner in the same way (only unit size 20).

13.Check the waste gas values (see "Checking the basic gas setting").

56 Installation instructions

14.To end the CO2 measurement, press the "START STOP" button.

10014471-0AIBE-A

15.The indicator light in the "START STOP" button goes out; the

burner is switched off.

16.Switch off the unit.

17.Fill out the commissioning report.

Measuring the offset pressure

Requirement Basic gas setting checked and not OK

Measuring accuracy of the pressure measuring device at least 0.01 hPa (0.01 mbar)

Left side wall removed

DANGER Risk of personal injury and physical damage from electric shock

• Inspection and adjustment work that can be carried out only with the housing open and the unit under power must be performed only by electrically trained technical personnel.

Connecting the unit

10014471-0AIBE-A

Image: Measuring the offset pressure

a Offset pressure measuring point b Pressure measuring device

1. Unscrew the sealing plug from the offset pressure measuring point.

2. Connect the pressure measuring device.

3. Open the gas shut-off valve on the unit.

4. Switch on the unit.

5. Set the unit to low output (see "Checking the basic gas setting").

The unit operates at minimum output.

6. Measure the offset pressure.

7. Check whether the measured offset pressure is within the specified range (see "Exhaust gas values").

57Installation instructions

Connecting the unit

6.8 Converting the gas type

Requirement Notes about the gas connection observed

Unit disconnected from power

Left side wall removed

Gas shut-off valve on the unit closed

DANGER Risk of fatal injury from operating the unit with the wrong gas type

• Ensure that the gas type for which the unit is set (see gas

• Ensure that the unit is suitable for the available gas type (see

DANGER Risk of explosion and fire from escaping gas

type supplemental label) matches the gas type available at the site.

nameplate).

• When bleeding air from or degassing the gas system and the unit, ensure that the air and gas are discharged to the outside in a technically correct manner and without creating a risk.

DANGER Risk of asphyxiation and explosion from damaged seals

• Check seals for damage

• Replace damaged seals

• Use only seals that are approved for use with gas

Image: Changing the gas orifice

58 Installation instructions

a Burner c Gas solenoid valve b Bolts (TX25) d Gas orifice with seal

10014471-0AIBE-A

Connecting the unit

1. If the unit is already filled with gas, degas the unit in a technically correct manner.

2. Unscrew the bolts from the gas solenoid valve.

3. Remove the gas solenoid valve.

4. Remove the gas orifice with seal.

5. Select the gas orifice specified for the gas type available and insert the seal. (See "Gas orifice diameters").

6. Replace the gas type supplemental label on the unit with the appropriate gas type supplemental label for the gas type available.

7. Replace the gas solenoid valve and secure it with the bolts.

8. Fill out the commissioning report.

ATTENTION Risk of physical damage from excessively high pressure

• When opening the gas shut-off valve on the unit, ensure that the pressure in the gas connection line is <150 mbar.

• If the pressure is >150 mbar, close the gas supply, reduce the pressure in a technically correct manner and notify the gas utility.

9. Open the gas shut-off valve on the unit, while paying attention to the pressure in the gas connection line.

10.Bleed air from the gas system and unit in a technically correct manner.

DANGER Risk of personal injury and physical damage from electric shock

• Inspection and adjustment work that can be carried out only with the housing open and the unit under power must be performed only by electrically trained technical personnel.

11.Switch on the power supply.

12.Switch on the unit.

13.Check for leaks (see "Checking for leaks").

14.Check the rated heat input (see " Checking the basic gas setting").

15.Fill out the commissioning report.

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59Installation instructions

Connecting the unit

6.9 Making the exhaust air connection

When setting up the unit under an exhaust hood, observe the applicable regional regulations for ventilation systems.

ATTENTION Risk of physical damage from fouling of the exhaust air ducts

• Do not incorporate the exhaust air line directly into an exhaust air system.

ATTENTION Risk of corrosion damage from condensate

• Install the exhaust air line such that condensate cannot collect.

Requirement Flexible aluminium hose

6.10 Checking operation

Requirement Supply air and exhaust gas routing checked and operating

• Nominal diameter 63 mm for sizes 6 and 10

• Nominal diameter 76 mm for size 20

• Maximum length of hose 2.5 m

• Temperature-resistant to 180 °C

1. Connect hose to exhaust air connection fitting.

2. Route hose to the exhaust hood with a 3° rise.

3. Secure end of hose about 50-200 mm below the exhaust hood.

Power connection cable connected

Gas connection line connected

Check for leaks outside the unit conducted

Connection pressure checked

Check for leaks inside the unit conducted

Basic gas setting checked

60 Installation instructions

10014471-0AIBE-A

DANGER Risk of personal injury and physical damage from unsuccessful operational check

• Do not put the unit into service.

• Contact customer service.

DANGER Risk of personal injury and physical damage from electric shock

• Inspection and adjustment work that can be carried out only with the housing open and the unit under power must be performed only by electrically trained technical personnel.

6.10.1 Checking the exhaust gas routing for leaks

1. Switch on the unit.

2. Set the unit to high output (see "Checking the basic gas setting").

Connecting the unit

The unit operates at maximum output.

3. Check exhaust gas-conducting parts for leaks with a condensation mirror or approved backflow testing device in a technically correct manner.

4. Check for problem-free exhaust gas routing at the flow control (only type B

13BS

unit).

5. Conduct procedure for burner 2 in the same way (only unit size

20).

6. Switch off the unit.

7. Fill out the commissioning report.

6.10.2 Checking the monitoring of the exhaust gas routing

1. Switch on the unit and start any cooking program (see operating instructions).

The burner is operating.

2. Switch off the ventilation.

The gas supply is blocked.

The flame extinguishes.

The unit attempts to ignite.

The safety device trips after 1 second.

10014471-0AIBE-A

An error message flashes on the display.

An audible signal sounds.

The

STEP

indicator light flashes.

The monitoring of the exhaust gas routing is functioning.

3. Switch on the ventilation.

4. Press the "STEP" button.

The unit restarts.

61Installation instructions

Connecting the unit

5. The cooking program starts again.

The burner ignites within 5 seconds.

The flame burns stably.

6. Switch off the unit.

7. Fill out the commissioning report.

6.10.3 Checking the ignition behaviour

Requirement Left side wall removed

DANGER Risk of personal injury and physical damage from electric shock

• Inspection and adjustment work that can be carried out only with the housing open and the unit under power must be performed only by electrically trained technical personnel.

1. Switch on the unit and start any cooking program (see operating instructions).

2. Observe the ignition behaviour at the inspection port until the flame burns stably.

3. End the cooking program.

4. Repeat the procedure several times.

5. Conduct procedure for burner 2 in the same way (only unit size

20).

6. Switch off the unit.

7. Fill out the commissioning report.

6.10.4 Checking the flame pattern

Requirement Left side wall removed

DANGER Risk of personal injury and physical damage from electric shock

• Inspection and adjustment work that can be carried out only with the housing open and the unit under power must be performed only by electrically trained technical personnel.

The burner ignites.

The flame extinguishes.

The burner is off.

1. Switch on the unit.

2. Set the unit to high output (see "Checking the basic gas setting").

The unit operates at maximum output.

3. Observe the flame pattern at the inspection port.

The flame must be pointed at its core, not generate soot,

appear yellow, flash back or lift off.

62 Installation instructions

10014471-0AIBE-A

4. Conduct procedure for burner 2 in the same way (only unit size

20).

5. Switch off the unit.

6. Fill out the commissioning report.

6.10.5 Checking the flame monitoring

Requirement Ignition behaviour checked

Flame pattern checked

1. Switch on the unit and start any cooking program (see operating instructions).

The burner ignites within 5 seconds.

The burner is operating.

2. Close the gas shut-off valve on the unit.

The flame extinguishes.

The unit attempts to ignite.

The safety device trips after 1 second.

Connecting the unit

An error message flashes on the display.

An audible signal sounds.

The

STEP

indicator light flashes.

The flame monitoring is functioning.

3. Open the gas shut-off valve on the unit.

4. Press the "STEP" button.

The unit restarts.

5. The cooking program starts again.

The burner ignites within 5 seconds.

The burner is operating.

6. Conduct procedure for burner 2 in the same way (only unit size

20).

7. Switch off the unit.

8. Fill out the commissioning report.

10014471-0AIBE-A

63Installation instructions

Connecting the unit

6.10.6 Checking the controls

Requirement Ignition behaviour checked

Flame pattern checked

1. Switch on the unit and start any cooking program (see operating instructions).

Set the cooking zone temperature to a higher temperature than

the current cooking zone temperature.

The burner is operating.

Once the set cooking zone temperature is reached, the

controls switch off the burner.

The burner is off.

The controls are functioning.

2. Conduct procedure for burner 2 in the same way (only unit size

20).

3. Switch off the unit.

4. Fill out the commissioning report.

6.10.7 Checking the monitoring of the cooking zone door

1. Switch on the unit and start any cooking program (see operating instructions).

The burner is operating.

The fan wheel is turning.

2. Open the cooking zone door during operation.

The burner is off.

The fan wheel comes to a stop.

The monitoring of the cooking zone door is functioning.

3. Close the cooking zone door.

4. Conduct procedure for burner 2 in the same way (only unit size

20).

5. Switch off the unit.

6. Fill out the commissioning report.

64 Installation instructions

10014471-0AIBE-A

7 Putting the unit into service

If the unit is not put into service immediately after being connected, all inspections involving the gas connection must be repeated.

Requirement Supply air and exhaust gas routing checked

Electrical connection made Gas connection made Operation successfully checked Left side wall closed

1. Instruct operator

2. Fill out the commissioning report

7.1 Filling out the commissioning report

General Yes No

Putting the unit into service

Information from the nameplate entered?

SN: _____________________________ Typ: _____________________________

QN (Hi): _____________________________

E: ________________________________________________________________

Bez: ______________________________________________________________

Item-Nr.: _____________________________ (if listed)

Obvious damage to the unit? What and where?: ______________________________________________________________________________

Unit levelled?

Basic control setting Yes No

Temperature unit set?

°C °F

Installation altitude set?

0 - 999 m 1000 - 1999 m

2000 - 2499 m >2500 m

Ready2Cook preheating temperature set?

Ready2Cook preheating temperature: ________ %

Exhaust hood run time extension set?

Exhaust hood run time extension: ________ seconds

Audible signal volume set?

quiet loud

Ready2Cook hold time set?

Ready2Cook hold time: ________ minutes

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65Installation instructions

Putting the unit into service

Supply air and exhaust gas routing Yes No

Supply air and exhaust gas routing complies with regulations?

Supply air and exhaust gas routing connected in a technically correct manner?

Supply air and exhaust gas routing is functioning properly?

Supply air and exhaust gas paths unobstructed?

Unit connected to monitoring of the exhaust gas routing in a technically correct manner?

The monitoring of the exhaust gas routing is functioning?

Electrical connection Yes No

Power connection made properly?

Equipotential bonding Power optimizing system

Floating contact …

Electrical connections made properly?

Residual-current protective device connected immediately before this unit?

Residual-current protective device connected before this and other units?

Gas connection Yes No

Does the information on the gas type supplemental label match the gas type available?

Information from the gas type supplemental label entered?

Natural gas:

E/H, G20, 20 mbar

LL/L, G25, 20 mbar

L, G25, 25 mbar

E+, G20/G25, 20/25 mbar

13A, G21, 20 mbar

Other gas type: ________________________ Connection pressure: ________________________ mbar

Gas connection made in a technically correct manner?

Dimension of gas connection at the unit: ____________________ mm or inches

Dimension of gas connection line: ____________________ mm or inches

Thermally activated shut-off installed?

Gas connection line leak-free?

Gas-conducting parts inside the unit leak-free?

Connection pressure OK?

Liquefied gas:

B/P, G30/G31, 50 mbar

B/P, G30/G31, 30 mbar

B/P, G30/G31, 28 mbar

Connection pressure: ________________________ mbar

Nozzle pressure OK?

Measured: __________ mbar Set: __________ mbar

Primary air gap OK?

Measured: __________ mm Set: __________ mm

66 Installation instructions

10014471-0AIBE-A

Gas connection Yes No

Exhaust gas values at full load OK?

Measured CO: __________ ppm Set CO: __________ ppm

Measured CO2: __________ Vol % Set CO2: __________ Vol %

Exhaust gas values at partial load OK?

Measured CO: __________ ppm Set CO: __________ ppm

Measured CO2: __________ Vol % Set CO2: __________ Vol %

Conversion of gas type (if necessary) Yes No

Burner nozzle / gas orifice replaced?

Putting the unit into service

Before conversion:

Number of nozzles / gas orifices: __________

Coefficient: __________

Appropriate gas type supplemental label attached after conversion?

Information from the gas type supplemental label after conversion entered?

Natural gas:

E/H, G20, 20 mbar

LL/L, G25, 20 mbar

L, G25, 25 mbar

Other gas type: ________________________ Connection pressure: ________________________ mbar

Function check Yes No

Exhaust gas routing is functioning properly?

Exhaust gas routing is leak-free?

The monitoring of the exhaust gas routing is functioning?

Ignition behaviour OK?

Flame pattern OK?

Flame monitoring is functioning?

After conversion:

Number of nozzles / gas orifices: __________

Coefficient: __________

Liquefied gas (LPG):

B/P, G30/G31, 50 mbar

B/P, G30/G31, 30 mbar

Controls are functioning?

Monitoring of the cooking zone door is functioning?

Minimum connection pressure available?

Connection pressure: _______________ bar

Water connection made properly?

Lines and connections have no leaks?

Mixing battery mounted properly?

10014471-0AIBE-A

Water connection Yes No

67Installation instructions

Putting the unit into service

Wastewater connection Yes No

Wastewater connection made in a technically correct manner?

On-site waste trap Vacuum breaker

Funnel discharge

Wastewater line size: ____________________ mm

Exhaust air connection Yes No

Set up under exhaust hood?

Connected to exhaust air duct?

Exhaust air line size: ____________________ mm

Exhaust air line length: ________________________ mm

Final notes Yes No

Was the unit put into service?

Comments:

Operator trained?

Electrical installation was provided by:

Company Installer City, date Signature

The gas was connected by:

Company Installer City, date Signature

Water installation was provided by:

Company Installer City, date Signature

Wastewater installation was provided by:

Company Installer City, date Signature

Exhaust air connection was provided by:

Company Installer City, date Signature

Operator training was provided by:

Company Installer City, date Signature

68 Installation instructions

10014471-0AIBE-A

www.mkn.eu

MKN FlexiCombi Classic, FlexiCombi Classic 6.15, FlexiCombi Classic 6.21, FlexiCombi Classic 10.15, FlexiCombi Classic 10.21 Installation Instructions

Specifications and Main Features

Frequently Asked Questions

User Manual

Directory of contents

1 Introduction

1.1 About this manual

1.1.1 Explanation of signs

1.2 Use of the unit

1.3 Warranty

2 Safety information

3 Description of the unit

3.1 Overview of the unit

3.2 Planning drawing

3.3 Equipment and connection data

3.3.1 Connection pressure

3.3.2 Speed of the fan-assisted gas burner

3.3.3 Exhaust gas values

3.3.4 Gas orifice diameter

3.3.5 Status messages

4 Transporting the unit

4.1 Transport information

4.2 Transporting to the installation site

4.2.1 Transporting on a pallet

4.2.2 Transporting without a pallet

4.2.3 Transporting by raising and lowering

4.3 Unpacking the unit

5 Setting up the unit

5.1 Lifting the unit off the pallet

5.2 Placing the unit on the equipment legs

5.3 Setting up the unit on a work surface

5.4 Aligning the unit

5.4.1 Aligning countertop units

5.4.2 Aligning floor-standing units

5.5 Maintaining minimum clearances

6 Connecting the unit

6.1 Opening and closing the housing

6.1.1 Removing and attaching the side panel

6.2 Checking the supply air and exhaust gas routing

6.2.1 Description of the supply air and exhaust gas routing

6.3 Making the electrical connection

6.3.1 Notes regarding the electrical connection

6.3.2 Connecting the electric power cable to the unit

6.3.3 Connecting to the potential equalisation circuit

6.4 Making the basic control settings

6.4.1 Opening the Setting menu

6.4.2 Changing the basic control settings

6.5 Making the water connection

6.5.1 Connecting hard and soft water

6.5.2 Connecting soft water twice

6.6 Making the wastewater connection

6.6.1 Identifying the cleaning system

6.6.2 Connecting the wastewater line to a permanent connection

6.6.3 Connecting the wastewater line to the discharge funnel

6.7 Connecting the gas

6.7.1 Notes about the gas connection

6.7.2 Description of the gas connection

6.7.3 Connecting the gas connection line

6.7.4 Checking for leaks

6.7.5 Checking the connection pressure

6.7.6 Checking the basic gas setting

Checking the rated heat input

Checking the primary air quantity

Checking the exhaust gas values

6.7.7 Adjusting the basic gas setting

Setting the rated heat input

Adjusting the primary air quality

Manually adjusting the rated heat input

Measuring the offset pressure

6.8 Converting the gas type

6.9 Making the exhaust air connection

6.10 Checking operation

6.10.1 Checking the exhaust gas routing for leaks

6.10.2 Checking the monitoring of the exhaust gas routing

6.10.3 Checking the ignition behaviour

6.10.4 Checking the flame pattern

6.10.5 Checking the flame monitoring

6.10.6 Checking the controls

6.10.7 Checking the monitoring of the cooking zone door

7 Putting the unit into service