MKN FlexiCombi Classic Series User manual

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
Read the operating instructions prior to
commissioning

2 Installation instructions
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
Copyright
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.

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
10014471-0AIBE-A
3Installation instructions

Directory of contents
4 Installation instructions
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
10014471-0AIBE-A

Introduction
5Installation instructions
1 Introduction
1.1 About this manual
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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Introduction
6 Installation instructions
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.
1.
2.
Action steps, which must be performed
in the prescribed sequence.
Result of a listed action.
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Introduction
7Installation instructions
1.2 Use of the unit
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.
1.3 Warranty
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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Safety information
8 Installation instructions
2 Safety information
Ensuring conformity with
standards
Observe applicable international, European and national laws,
regulations, standards and directives for the unit when transporting,
setting up and connecting it.
Improper installation Risk of property damage and personal injury from improper
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 storage Risk of personal injury and property damage from improper
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.
10014471-0AIBE-A

Safety information
9Installation instructions
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.
•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.
•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.
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Safety information
10 Installation instructions
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.
10014471-0AIBE-A

Description of the unit
11Installation instructions
3 Description of the unit
3.1 Overview of the unit
a
b
c
d
e
f
g
hijk
l
m
n
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
d Hand shower k Potential equalisation connection
e Equipment leg, vertically ad-
justable
l Steam outlet connection fitting
f Hard water connection m Waste gas connection
g Soft water connection n Air intake connection fitting
10014471-0AIBE-A

Description of the unit
12 Installation instructions
a
b
c
d
e
f
g
hi
jk
l
m
no
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
m Waste gas connection, burner 2
f Hard water connection n Steam outlet connection fitting
g Soft water connection o Waste gas connection, upper fan-as-
sisted gas burner
h Wastewater connection
10014471-0AIBE-A

Description of the unit
13Installation instructions
3.2 Planning drawing
f
ba c
de
h
g
Image: Unit sizes 6 and 10
a
h
bcde
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
10014471-0AIBE-A

Description of the unit
14 Installation instructions
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)
102 x 80 x
79
102 x 80 x
79
102 x 80 x
106
102 x 80 x
106
108 x 82 x
196
108 x 82 x
196
Packaged unit
Length x width x height (cm)
96 x 108 x
102
96 x 108 x
102
96 x 108 x
128
96 x 108 x
128
96 x 116 x
220
96 x 116 x
220
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
2PE 220–240 V AC 50/60 Hz
1NPE 100 V AC 50/60 Hz
Protection class IPX5
Connected load (kW) 0.6 1.0
Recommended fuse (A) 16
Soft water connection
Carbonate hardness CaCO3
(mmol/l)
< 0.9
Chloride Cl (mg/l) < 50
Iron Fe (mg/l) < 0.1
Connection pressure (hPa),
(bar)
200 – 600, 2 – 6
Connection (inches) R 3/4, male thread
Hard water connection
Carbonate hardness CaCO3
(mmol/l)
< 4
Connection pressure (hPa),
(bar)
200 – 600, 2 – 6
Connection (inches) R 3/4, male thread
Wastewater connection
Discharge temperature (°C) < 80
Connection (mm) Connection fitting, 50 mm diameter
Gas connection
10014471-0AIBE-A

Description of the unit
15Installation instructions
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 **
20
Connection pressure (mbar)
Liquefied gas 3B/P, 3P **
50
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
B13BS (Pa)
0 – 5
Exhaust gas temperature B13BS
(°C)
170 230 195 240 205 250
Exhaust gas mass flow rate
B13BS (kg/h)
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 pres-
sure"
10014471-0AIBE-A

Description of the unit
16 Installation instructions
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.
10014471-0AIBE-A

Description of the unit
17Installation instructions
3.3.3 Exhaust gas values
Gas
type
Output Unit size CO2 (vol. %) * poffset (hPa) ** CO (ppm) ***
Range optimal Range optimal Range optimal
Natural
gas
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
0.5 - 1.0 0.6 -0.4 - 0 -0.15
Liquefied
gas, pro-
pane
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
0.5 - 1.0 1.0 -0.4 - 0 -0.15
Liquefied
gas, bu-
tane
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 1.0 -0.4 - 0 -0.15
* 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
3.3.4 Gas orifice diameter
Unit size Orifice size (1/100 mm)
Natural gas E/H
G20
Natural gas LL/L
G25
Natural gas13A
G21
Liquefied gas B/P
G30/G31
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".
10014471-0AIBE-A

Description of the unit
18 Installation instructions
3.3.5 Status messages
Burner operation
Display Meaning
HI G1F1
CO2
HI = High output
CO2 = CO2 measurement
G1 = Gas supply open (gas solenoid valve open)
F1 = Flame present (burner on)
85°C CO2 2800
85°C = Current cooking zone temperature
CO2 = CO2 measurement
2800 = Gas blower speed (rpm)
Burner status messages
Display Meaning
HI G0F0
CO2
G0 = Gas supply closed (gas solenoid valve closed)
F0 = No flame (burner off)
HI G1F0
CO2
G1 = Gas supply open (gas solenoid valve open)
F0 = No flame (burner off)
HI G1F1
CO2
G1 = Gas supply open (gas solenoid valve open)
F1 = Flame present (burner on)
Burner error messages
Display Meaning Possible cause Remedy
Err
CO2
71
Err = Error Gas valve closed.
Air in the gas line.
Open the gas valve and
repeat ignition.
CO2 = CO2 measurement
71 = No gas
Err
CO2
72
Err = Error Power supply inter-
rupted. Error in the
control electronics.
Contact customer service
CO2 = CO2 measurement
72 = Blower not running
Err
CO2
73
Err = Error Wrong gas quality Contact customer service
CO2 = CO2 measurement
73 = General gas error
10014471-0AIBE-A

Transporting the unit
19Installation instructions
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"). “
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.
10014471-0AIBE-A

Transporting the unit
20 Installation instructions
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.
10014471-0AIBE-A