HOUNO CPE-gas User manual

Version 2.5x
Service & Installation Manual
CPE-gas
ENG

- 2 -
Table of Contents
Page
Preface and terms of warranty 3
Rating plate 4
Installation and connection 5
-Installation 6
-Water connection 7
-Drain connection 8
-Electrical connection 9
-Gas connection 0
-Adjustment of pre-mix burner - 2
xhaust 13
Checking before use 14
Annual service check 15-16
Start menu 17
Main menu 18
Set-up menu 19-25
-Selecting language 20
-Network 2 -22
-Setting sound 23
-Setting time 24
-Oven set-up 25
Service menu 26-65
-Selecting USB key service 27
Restoring from backup menu 28-30
Selecting backup menu 29
USB key service menu 3
-Energy meters 32
-Reading meters 33
Error log 34
Error statistics 3-2 35
Service counters 36
-Lime-scale diagnosis 37-38
-Software updating menu 39-42
-ClimaOptima calibration 43
-Door sensor calibration 44-45
-Technician service 46-68
Test functions 47-55
Oven number 56
Display oven set-up 57
Edit oven set-up 58-65
Logo 66-67
Language update 68
nter code 69
Survey of error codes 70
Appendices 7 -76
-Appendix : HOUNÖ installation checklist
-Appendix 2: HOUNÖ instruction checklist
-Appendix 3: Oven set-up (set-up menu)

- 3 -
Preface and Terms of Warranty
You are now the owner of one of the leading oven products on the market.
All HOUNÖ products are currently subjected to intensive product development, which ensures
that the products always contain the latest technology and the most up-to-date and energy-
saving methods of preparation.
Furthermore, the HOUNÖ products are entirely up-to-date with the latest developments/
technology in terms of
•ERGONOMICS AND SAFETY
•SIMPLE AND LOGICAL OPERATION
•USER FRIENDLY DESIGN
•RELIABILITY AND SERVICE
To ensure that our customers get an optimum and reliable product, all HOUNÖ units are
passed through an extensive test program in which all functions are subjected to a continuous
and extreme load.
For optimum results
Before you start using the oven, we recommend that you study the user’s manual thoroughly
in order to be able to fully utilise the many facilities and to ensure optimum cooking results.
Furthermore, by going through the manual, you will obtain a better understanding of the
advanced technology and feel safer when using the oven in your daily work.
Terms of warranty
Provided that it has been registered on the HOUNÖ website, your new HOUNÖ oven is covered
by a 48-month factory warranty. The warranty covers the oven cabinet and spare parts.
Furthermore, there is a 0-year warranty on the exterior door glass. The period of warranty
takes effect from the date of production. For further information on the warranty terms, please
visit www.houno.com/warranty.
The warranty does not include....
We especially draw your attention to the fact that the factory warranty does not cover glass
parts such as interior door glass, lamp glass and halogen lamps, nor does it cover sealings.
Furthermore, the factory warranty does not apply in the case of
•defects that are due to the fact that installation has not been carried out in accordance
with the HOUNÖ Installation & Service Manual at present in force (electricity, gas,
water/drain, exhaust),
•damage resulting from accidents, including damage caused by water, transport,
misapplication or negligence,
•defects and interruptions of operation that are the result of the oven not being
handled/operated as specified in the user's manual.
HOUNÖ cannot be made liable for indirect loss, including loss of profits.
If you utilise all the technological facilities of this oven, you are guaranteed perfect results with
only a minimum of resources.
Enjoy your new HOUNÖ oven.
Yours sincerely,
HOUNÖ A/S

- 4 -
Rating plate
When communicating with HOUNÖ, we kindly ask you to inform us of the serial number of the
oven that is stated on the rating plate. The rating plate is located on the right-hand corner
post of the oven cabinet, as shown below.
The HOUNÖ Technical Support, whose experience and expert knowledge are at your disposal,
can be contacted at tel. No. +45 87 47 and fax No. 87 47 0.

- 5 -
Installation and Connection
Unpacking the oven
The oven is best handled while still in its wrapping. Wherever possible, use a lifting trolley.
Introduce the lifting trolley under the lower cross tube of the stand and place a couple of
wooden blocks between the cross tube and the lifting trolley.
To achieve the best possible balance, introduce the lifting trolley from the front of the oven or
from the motor side. Note that the oven can be lifted off the stand.
Remove the original packaging from the oven. Do not remove the foil that covers the surfaces
until the oven has been installed, as once the foil has been removed the surfaces are
vulnerable to sharp objects such as tools.
Remove all packaging material that secures the racks in the oven chamber.
The packaging should be destroyed in accordance with national rules and
regulations governing waste disposal. Information on the composition of the
packaging material can be obtained from the HOUNÖ Customer Centre.

- 6 -
Installation and Connection
Installing the oven
To ensure that the oven functions correctly when installed, it should be placed upright and
level (horizontally). This is measured at the front and side edge of the roof, and adjustment is
made by means of the adjusting screws on the stand or on the legs of table models. The
height of the oven can also be adjusted to fit the trolley for rack.
Correct
Wrong
The oven should be placed 5 cm / 2 inches from the rear wall and the distance
between the right side of the oven and the nearest wall or piece of furniture, etc.
should be at least 7 cm / 2.75 inches. This is to ensure the necessary flow of cooling
air to the oven. Strong sources of heat such as hotplates, tilting frying pans, deep fat
fryers, etc. should not be placed near the oven, otherwise the warranty may cease to
apply.
(NSF) On an oven with stand, the distance to the floor must be at least 150
mm / 5.9 inches. Only 2½ threads must be visible on the adjustable feet.
(NSF) On table models, the legs must be adjusted to allow a minimum
clearance of 76 mm / 3 inches to the surface on which the oven stands.

- 7 -
Installation and Connection
Water connection
HOUNÖ ovens have one or two water connections.
To facilitate cleaning and service, the oven should be connected with an approved flexible ¾’’
hose and the permanent installations should be fitted with a stop tap.
Before connecting the oven to water, flush the tubes thoroughly.
Hardness of the water: max. 3 dH
Conductivity: min. 75 microsiemens
Water pressure: min. 2.5 bar (36 PSI) dynamic pressure (when CombiWash on),
max. 6 bar (87 PSI)
Water flow: min. 2 l/m
Water temperature: max. 20°C (68°F)
Chloride concentration: max. 00 mg/litre
Sulphate: max. 50 mg/litre
If the feeder is connected to the water distribution system with a flexible hose, this hose
should be VA approved.
If the water temperature exceeds 20°C / 68°F, problems with regard to
ClimaOptima calibration and cooling of the oven may occur.
Ovens with a steam generator must not be connected to a reversed osmosis
plant, as this may cause problems with the reading of the water level in the
steam generator.
The water connection must be carried out by an authorised plumber in
accordance with existing rules and regulations
Clogged up water filters and dirt in the solenoid valves are not covered by the
warranty.
To ensure that the water quality is in conformity with the above requirements,
the installation of a water filter in front of the water connection to the oven is
recommended.
The installation of a particle filter (0.25mm) is also recommended.
In the case of two water connections, the following applies:
) connection for raw water for the condensation jet (cold water). Located at the back.
2) connection for the steam generator and the jet in the oven chamber. Must meet the
requirements applying to water supplied to household appliances; however, hot water with
a temperature not exceeding 20°C / 68°F can be used. Located at the front.

- 8 -
Installation and Connection
Drain connection
From the factory, the HOUNÖ ovens are equipped with a drain system that removes surplus
water from the oven chamber. This water may be condensed water from the products, or it
may occur when the oven chamber is cooled down with cold water, or when the oven chamber
is cleaned.
Connection must be carried out by an authorised plumber, to an open or to a closed
drain.
It is recommended that a water outlet is available/established in the floor of
the room where the oven is located.
The drain must never end directly under the oven.
The drain must be of stainless steel or an equally temperature-resistant material, have a
diameter of at least 50 mm / 2 inches and a fall of at least 3° or 5%.

- 9 -
Installation and Connection
lectrical Connection
The electrical connection must be carried out by an authorised electrician in accordance with
existing rules and regulations.
The wiring diagram is located in the motor compartment.
The terminal for the electrical connection is located behind the right side plate.
It is recommended connecting the oven to an independent safety cut-out with permanent
electrical connection.
The warranty does not cover incorrect connection.
Before connecting the oven, check that the connection to the transformer
corresponds with the voltage for the oven.
Recommended supply line: H05RN-F 3 x 2.5 mm
2
When you connect the oven, you should
•follow the installation instructions and the information given on the rating plate.
•comply with local rules and regulations.
HOUNÖ recommends the use of a (Type B) RCD/RCCB. 300 mA.
0 200/208 230 240
Voltage
0 24 0 11,5 24
Voltage
Primary side Secondary side
0 230 400 415 440 480
output Voltage
Primary side Secondary side
0 24 0 11,5 24
Voltage

- 0 -
Installation and Connection
Gas Connection
The gas connection must be carried out by an authorised gas oven installer in accordance with
existing rules and regulations.
The warranty does not cover incorrect connection.
Houno Gas Oven Adjustment Settings
Type of Gas
Heat
Power
kW
Ovn
Types
Gas inlet
Pressure
Nature Gas
(G20)
13 kW 1.06/5 18-25 mbar
21 kW 1.10/8, 1.12/10 18-25 mbar
42 kW 1.20/15 18-25 mbar
24 kW 2.10, 2.14 18-25 mbar
48 kW 2.20 18-25 mbar
Nature Gas
(G25)
13 kW 1.06/5 18-25 mbar
21 kW 1.10/8, 1.12/10 18-25 mbar
42 kW 1.20/15 18-25 mbar
24 kW 2.10, 2,14 18-25 mbar
48 kW 2.20 18-25 mbar
LPG 3BP
(G30/G31)
13 kW 1.06/5 30-57 mbar
21 kW 1.10/8, 1.12/10 30-57 mbar
42 kW 1.20/15 30-57 mbar
24 kW 2.10, 2.14 30-57 mbar
48 kW 2.20 30-57 mbar
LPG 3P
(G31)
13 kW 1.06/5 30-57 mbar
21 kW 1.10/8, 1.12/10 30-57 mbar
42 kW 1.20/15 30-57 mbar
24 kW 2.10, 2.14 30-57 mbar
48 kW 2.20 30-57 mbar
When you connect the oven, you should
•Follow the installation instructions and the information given on the rating plate.
•Comply with local rules and regulations.

- -
Adjustment of pre-mix burner
To make sure that the factory settings of the pre-mix burner match the actual
conditions of the installation, the O
2
level (percentage) should be analysed during
installation. The values found must be entered in the installation checklist, sent to
HOUNÖ and saved in the oven. If the values are lower/higher than permitted, a
trained service engineer must check and adjust the settings of the burner.
Adjustment of the burner should be carried out as described below.
Hot Air Burner 1 "Bottom"
O2%, CO2%
"MAX" RPM
O2%, CO2%
"MIN", RPM
RPM Adjustement
normal operation
Air Proving
Switch - ON
Type of
Gas
Ovn
Types O2% CO2% RPM kW O2% CO2% RPM
"u16"
Min
"u16"
Start
"u16"
Max OFF -> ON
Nature Gas
(G20)
1.06/5 4,1% 9,4% 6700 13 kW 4,6% 9,1% 4800 4800 4800 6700 3100 ±100
1.10/8, 1.12/10 4,3% 9,3% 6300 21 kW 4,1% 9,4% 2700 2700 3900 6300 2300 ±100
1.20/15 4,3% 9,3% 6300 21 kW 4,1% 9,4% 2700 2700 3900 6300 2300 ±100
2.10, 2.14 4,1% 9,4% 6600 24 kW 4,5% 9,2% 2800 2800 3300 6600 2400 ±100
2.20 4,1% 9,4% 6600 24 kW 4,5% 9,2% 2800 2800 3300 6600 2300 ±100
Nature Gas
(G25)
1.06/5 4,0% 9,3% 6800 13 kW 4,3% 9,1% 4800 4800 4800 6800 3100 ±100
1.10/8, 1.12/10 4,0% 9,3% 6400 21 kW 4,0% 9,3% 2800 2800 3900 6400 2300 ±100
1.20/15 4,0% 9,3% 6400 21 kW 4,0% 9,3% 2800 2800 3900 6400 2300 ±100
2.10, 2,14 4,0% 9,3% 6400 24 kW 4,1% 9,2% 2800 2800 3300 6600 2400 ±100
2.20 3,8% 9,4% 6600 24 kW 4,1% 9,2% 2800 2800 3300 6600 2300 ±100
LPG 3BP
(G30/G31)
1.06/5 4,5% 11,0% 6500 13 kW 5,1% 10,6% 4800 4800 4800 6500 3100 ±100
1.10/8, 1.12/10 4,5% 11,0% 6000 21 kW 4,5% 11,0% 2600 2600 4300 6000 2300 ±100
1.20/15 4,5% 11,0% 6000 21 kW 4,5% 11,0% 2600 2600 4300 6000 2300 ±100
2.10, 2.14 4,0% 11,4% 6200 24 kW 4,7% 10,9% 2800 2800 3300 6200 2400 ±100
2.20 4,0% 11,4% 6200 24 kW 4,7% 10,9% 2800 2800 3300 6200 2300 ±100
LPG 3P
(G31)
1.06/5 5,2% 10,3% 6800 13 kW 5,2% 10,3% 4800 4800 4800 6800 3100 ±100
1.10/8, 1.12/10 5,4% 10,2% 6300 21 kW 5,4% 10,2% 3900 3000 3900 6300 2300 ±100
1.20/15 5,4% 10,2% 6300 21 kW 5,4% 10,2% 3900 3000 3900 6300 2300 ±100
2.10, 2.14 5,1% 10,4% 6600 24 kW 5,8% 9,9% 2900 2900 3300 6600 2400 ±100
2.20 5,1% 10,4% 6600 24 kW 5,8% 9,9% 2900 2900 3300 6600 2300 ±100
Hot Air Burner 2 "Top"
O2%, CO2%
"MAX" RPM
O2%, CO2%
"MIN", RPM
RPM Adjustement
normal operation
Air Proving
Switch - ON
Type of
Gas
Ovn
Types O2% CO2% RPM kW O2% CO2% RPM
"u17"
Min
"u17"
Start
"u17"
Max OFF -> ON
Nature Gas
(G20)
1.06/5
1.10/8, 1.12/10
1.20/15 4,3% 9,3% 6300 21 kW 4,1% 9,4% 2700 2700 3900 6300 2300 ±100
2.10, 2.14
2.20 4,1% 9,4% 6600 24 kW 4,5% 9,2% 2800 2800 3300 6600 2300 ±100
Nature Gas
(G25)
1.06/5
1.10/8, 1.12/10
1.20/15 4,0% 9,3% 6400 21 kW 4,0% 9,3% 3900 2800 3900 6400 2300 ±100
2.10, 2,14
2.20 3,8% 9,40% 6600 24 kW 4,1% 9,20% 2800 2800 3300 6600 2300 ±100
LPG 3BP
(G30/G31)
1.06/5
1.10/8, 1.12/10
1.20/15 4,5% 11,0% 6000 21 kW 4,5% 11,0% 2600 2600 4300 6000 2300 ±100
2.10, 2.14
2.20 4,0% 11,4% 6200 24 kW 4,7% 10,9% 2800 2800 3300 6200 2300 ±100
LPG 3P
(G31)
1.06/5
1.10/8, 1.12/10
1.20/15 5,4% 10,2% 6300 21 kW 5,4% 10,2% 3900 3000 3900 6300 2300 ±100
2.10, 2.14
2.20 5,1% 10,4% 6600 24 kW 5,8% 9,9% 2900 2900 3300 6600 2300 ±100

- 2 -
Max. screw
Min. screw
The first value to be set is the O
2
% at maximum RPM for the gas type in question. For this,
0
2
% measuring equipment is required.
. Enter test function.
2. Activate main contactor (Test function, Oven).
3. Activate motor in oven chamber (Test function,
Fan) at 00% speed.
4. In Gas test, set the fan speed to the start value
for the gas type in question.
5. Turn on automatic gas burner control (press key
at Gas control). Wait for 3 sec.
6. Turn on gas-air control unit (press key at fan).
Current fan speed shows at bottom of display.
7. When pressure sensitive switch has sufficient
vacuum, ON shows, if not, OFF shows.
8. After approx. 5 sec., the pressure sensitive
switch will try to turn on the gas (Gas valve
changes from OFF to ON). A couple of attempts
may have to be made in the case of a recently
installed oven or if the gas has been turned off.
9. When the gas is on, the speed of the gas-air control unit increases gradually until it
reaches the maximum speed for the gas type in question.
0. At maximum speed, the O
2
% is read. If too high, turn max. screw on gas valve
towards plus, i.e. counter clockwise, until stated O
2
% is reached (A TOLERANCE OF max
±0,2%, min. +0,3%/-0,2% IS ACCEPTABLE).
Subsequently, the min. RPM for the gas type in question must be set. For this, O
2
% measuring
equipment is required.
. Follow step to 8 above.
2. Reduce speed to minimum speed for the gas type in question.
3. Read the O
2
% at minimum speed. If too high, turn minimum screw on gas valve clockwise
(works oppositely to the max. screw) until the stated O
2
% is reached (A TOLERANCE OF
max ±0,2%, min. +0,3%/-0,2% IS ACCEPTABLE).
Check/adjust Min., Start, and Max. settings in Test Function, Gas Set-up so that these values
match the values stated for the gas type in question.

- 3 -
xhaust
The HOUNÖ ovens are equipped with an open/direct exhaust system that removes surplus
humidity from the oven chamber. The exhaust system has an electrically operated damper.
The exhaust tube can be connected to a ventilating system. In that case, a special extraction
funnel is fitted to avoid suction directly from the oven chamber. This extraction funnel can be
ordered from HOUNÖ.
The scope of supply also includes a specially designed extraction hood, see illus. below.
If an extraction hood is installed in the ceiling above the oven, it should project 50 cm / 9.6
inches over the front of the oven. The suction effect should be 400 – 800 m
3
/h.
The ventilation motor can be controlled directly from the oven. This means that the ventilation
starts when a program is started and runs for 0 minutes after the program is completed.
The installation of the ventilation must be carried out in compliance with
national rules and regulations.

- 4 -
Checking before Use
The oven should be checked before you start using it.
On the outside
•Check that the oven has not been damaged in transit (dents, scratches, etc.)
•Check/adjust the height and check that the oven is placed level (horizontally)
•Check/adjust oven door
•Connections
•Check for correct water connection
•Turn on water supply
•Check for leaks
•Turn off water supply
•Check and clean dirt filter
•Turn on water supply again
•Check hand shower
•Check for correct electrical connection
•Check for correct gas connection
•Check connection to drip tray
•Check for correct mounting of drip tray
•Check for correct fall of hose from drip tray, and check for leaks
•Check for correct exhaust and drain connection
•Clean oven
•Apply steel oil
•Oven chamber
•Check that filter housing is mounted correctly
•Check interior light
•Clean oven
•Operation panel
•Check and adjust, if necessary, each of the preset values
•Heat up the oven at 250°C for approx. 5 min.
The installation checklist and the instruction checklist (appendices 1 and 2) should
be filled in and returned to HOUNÖ 30 days after the installation, at the latest.

- 5 -
Annual Service Check
Customer:
Address:
By: Postal code:
Serial No of the oven: Model:
1. Connection: Functioning correctly Y S NO
Water connection – dirt filter (may need tightening)
Electrical connection (may need tightening)
Drain connection (may need tightening)
Positioning of oven
Gas connections (may need tightening)
2. Door:
Closing device (may need adjusting)
Catch (may need adjusting)
Sealing (must be tight at 00°C steam or combi steam)
Hinging (may need adjusting)
Interior glass (hinging, fastening)
Calibrate door sensor
3. Inside oven:
Interior light
Jets (may need cleaning)
Fan (should rotate freely and be tightly fitted)
Heating elements (may need tightening)
4. Under oven:
Drain system (check for leaks and blocks)
Condensation jet and drain sensor
Drip tray (clean hose for tray drain)
Drip slide on oven door
5. Motor room:
Connection to heating elements
Load distribution on phases
Wire connection (overloading, bad connection, and tightening)
Exhaust motor
Fan motor (may need tightening)
Frequency transformer (check regulation)
ClimaOptima
Cooling fan
Filter for intake (may need cleaning)
Cooling plate for Solid State Relay (clean)
Check for moisture

- 6 -
7. Functional test: Functioning correctly Y S NO
Components (use test function)
Core temperature probe
Operation modes
CombiWash (clean nozzle arm)
Service engineer: Date and signature
Parts to be replaced at 12-, 24- and 36-month service intervals:
12-month inspection
Follow the annual service
check (see above).
Door seal
Light bulbs
Gasket for lamp glass
Nozzles
earing for nozzle arm
Update software
24-month inspection
Follow the annual service
check (see above).
Door seal
Light bulbs
Gasket for lamp glass
Nozzles
Main contactor
Spring for handle
earing for nozzle arm
Update software
36-month inspection
Follow the annual service
check (see above).
Door seal
Light bulbs
Gasket for lamp glass
Nozzles
Exhaust for damper motor
Detergent/rinse pump
Nozzle arm assy
Update software
For further information regarding warranty conditions, please see www.houno.com/warranty.

- 7 -
Start Menu
•For further information on the modes shown on this page, see user’s manuals
Access to MAIN MENU (see
p. 8)
Chooses next function to
the left (see user’s
manual)
Temperature down
Time down (for operation
without time setting, press
key until "-:--" appears)
Access to fan and exhaust
functions (see user’s
manual)
Not active
Not active in HOT AIR
Chooses next function to
the right (see user’s
manual)
Temperature up
Time u
p
Access to core
temperature mode
(see user’s manual)
Not active in HOT AIR
Access to preset programs
On/off
Main switch

- 8 -
Main Menu
•Please note that prior to delivery, the oven’s computer has been thoroughly tested and
correctly set up and we therefore recommend that all users, with or without a code,
navigate in the engineering with the utmost care. Incorrect handling may result in
inappropriate changes to the computer set-up.
•Changing the computer set-up requires extended knowledge as to the design and structure
of the oven. If in doubt, please contact your oven supplier.
Return to start screen
See user’s manual
See user’s manual
See user’s manual
See user’s manual
Not active
Not active
Access to oven set-up
menu (see p. 9)
Access to service menu
(see p. 26)
Not active
Not active
Access to entering code
(see p. 69)
Main switch

- 9 -
Set-up Menu
•Access to various settings. Avoid changing the settings inappropriately (contact your
oven supplier for further information).
Not active
Access to setting time (see
p. 24)
Access to oven set-up (see
p. 25)
Not active
Return to MAIN MENU
Not active
Access to selecting
language (see p. 20)
Access to network (see p.
2 -22)
Not active
Not active
Access to adjusting sound
(see p. 23)
Not active
Main switch

- 20 -
Selecting Language
•Showing the languages available. The red square indicates which language has been
selected.
Return to SET-UP MENU
Select Danish
Select English
Select Swedish
Select
Italian
Select French
Access to more languages
Select Icelandic
Select
Estonian
Select German
Select
Spanish
Select Finnish
Main switch