Wamsler K158 User manual

1
Central Heating Cooker
Operating and
Instruction Manual
GB
K158 K158F

35
GB
Foreword
Dear Customer,
Congratulations on the purchase of your central heating stove K158/K158F. You
have made the right decision, this product guarantees you:
•High quality by using the best, tested materials,
•Functional safety by using proven technology, tested to the most stringent
German and European Standards (EN 12815),
•Long life by being built robustly.
The K158/K158F central heating stove means you now own a modern compact
unit to:
•cook, bake, roast,
•centrally heat and
•provide hot water
The unit is energy saving, environmentally friendly and simple to use. Everything
you need to know about it is in the following pages plus a few additional tips as
well.
Please take note of the fact that installation may only be carried out by a qualified
expert, who will also be available later should you experience any problems.
The nameplate is on the left front foot and becomes visible if the fuel trolley is
pulled out (Fig. 12).
PLEASE NOTE:
When ordering replacement parts, the Article No. and Serial No. shown on the
identification plate must be quoted.

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Contents
Foreword...............................................................................................................33
Contents................................................................................................................36
Assembly...............................................................................................................37
Legend..................................................................................................................38
The most important at a glace ..............................................................................38
1. OPERATION.....................................................................................................39
1.1 Commissioning an integral stove................................................................39
1.2 Important operating parts ...........................................................................39
1.3 Lighting.......................................................................................................40
1.4 Heating and slow burning...........................................................................41
1.5 Heating between seasons and during the summer....................................41
1.6 Cooking.......................................................................................................41
1.7 Care and cleaning ......................................................................................42
1.7.1. Ceramic glass surfaces ..........................................................................41
1.8 Causes of faults..........................................................................................43
2. ARRANGEMENT..............................................................................................44
2.1 Fire safety...................................................................................................44
2.2 Chimney attachment...................................................................................44
2.3 The heating stove for open and closed systems........................................45
3. INSTALLATION ................................................................................................47
3.1 Installing the top lid.....................................................................................47
3.2 Flue gas connector direction ......................................................................47
3.3 Installation of the heat exchanger and the heat sink..................................47
3.4 Installing the stove bar................................................................................47
4. INSTRUCTIONS...............................................................................................48
4.1 General information....................................................................................48
4.2 Important Notes..........................................................................................48
4.3 Integrating in an existing unit......................................................................50
5. TECHNICAL DATA...........................................................................................51
5.1 Fuel.............................................................................................................51
5.2 Heating output data ....................................................................................52
5.3 Dimensions, output values, flue gas values ...............................................53
5.4 Dimensional drawings ................................................................................54
5.5 Brief instructions.........................................................................................55
6. FIGURES..........................................................................................................55
7. SAFETY MEASURES.......................................................................................61

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Assembly K158
1
9
2
6
4
8
7
13
5
3
10
12
11
K158F

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Legend
1. Top lid
2. Ash pan
3. Ash door
4. Fuel trolley
5. Fire door
6. Fire hole cover
7. Hotplate
8. Crank for raising and lowering grate
9. Grate door
10. Riddle bar
11. Secondary air slide
12. Temperature control
13. Fire door grip
Stove accessories
-Ash pan
-Operation instruction
-Lid lever
-Crank
-Smoke hole cover pair complete
-Cleaning brush
-Soot scraper
-Fire iron
The most important at a glace
The stove should on no account be heated up if there is no water or insufficient water in
the heating unit or the unit is frozen up.
- The ash door should only be open when heating up. While heating the door must
always remain closed, as otherwise the temperature control cannot regulate the per-
formance and there is a danger of the stove overheating.
- The maximum operating pressure of 2.5 bar in the heating unit may not be exceeded.
That is the response pressure for the safety valve.
- When adding water to the heating system attention must be paid to the pressure limit
of 1.5 bar (cold) or 2.0 bar (hot).
- Only use suitable recommended low smoke fuels and do not burn any smoke inten-
sive waste, coal slack or fine chippings.
- When the grid is in the "DOWN" position (winter setting) fuel should only be added to
the fire box in small amounts at a time.
- Do not allow the hotplate to glow and avoid cooking over.
- The chimney draught for full operation should not be below 12 Pa. If there are too
greater draughts in a single chimney then side air vents should be incorporated.

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IMPORTANT
Side air vents on chimneys with more than one stove connected not allowed.
- Clean stove, flue and chimney regularly.
- Do not lay any flue pipes horizontally for more than 1.25 m.
- Do not reduce flue pipe diameter from pipe connection to the chimney.
- Window and doors of the base frame should not be completely airtight because of the
need for combustion air intake.
- Pay attention to fire safety when erecting the stove and laying the flue pipes.
- Before operating the stove for the first time be sure to check the chimney equipment
according to the instructions, or have it checked.
- Press the red button on the heat sink down firmly from time to time, to check the
through flow functions. If the water flow draining out is becomes obviously weaker,
then an expert must contacted to decalcify the heat exchanger.
- Do not use paper to light the stove; it creates an environmental pollution danger.
1. OPERATION
1.1 Commissioning an integral stove
If the heating stove is to be integrated into an existing central heating system and the oil or
gas cooker is to remain in place to cope with peak demand, then the stove can be oper-
ated as required. The oil or gas cooker, as a rule, only heats the domestic hot water while
the stove is heating up and should therefore have a flue gas flap to avoid unnecessary
idling losses.
The cooker should be turned off
If the oil or gas central heating cooker is not connected, then the return bypass on the
cooker should be set so that the domestic water cooker usually installed or the storage
cooker next to it can be supplied with heat – that is if the stove is integrated after the mixer
and not between the cooker and the mixer.
The domestic water temperature is then directly dependent on the flow temperature. The
latter is also the case for the preferred arrangement between mixer and cooker or direct
connection of the heating stove to the flow and return lines of the existing heating cooker.
In all cited installation cases, the cooker should have a safety valve.
1.2 Important operating parts
Grate crank
The height of the grate can be altered for winter or summer operation.
The crank supplied (8) is used for raising and lowering (Fig. 4 and 5). The summer opera-
tion (grate position "UP", Fig. 4) ensures a high cooking capacity while at the same time
low water heating capacity.
Grate door (9)
At the "DOWN" winter position, the grate door is used for lighting and for removing cinders
and slag. The grate door can be opened by turning the catch (Fig. 6 and 7).

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Riddle arrangement
The grate can be riddled in any height position using the riddle bar (10). If it hot then the lid
lever can be used (Fig. 8).
Please do not tip any glowing ashes in the dust bin or outside.
Temperature controller (12) The Temperature control regulates the rate of burning
through the air intake and thereby the stove's heat level.
Fire hole cover (6) The fire hole cover can be lifted with the lid lever and fuel can be com-
fortably added from above (Fig. 10). The fire hole cover is the hottest part of the hotplate.
Secondary air slide (11) The air intake for the winter position of the grate can be regu-
lated by the secondary air slides for afterburning the flue gases. Keep the slide closed for
summer setting (Fig. 11a).
Fuel drawer (4) The fuel trolley is on rails and by lifting can be taken out completely (Fig.
12).
Please hold the recessed grip in the middle under the edge.
ATTENTION
Do not store easily combustible material (paper etc) in the fuel drawer.
INSTRUCTION
The ash door or the fire door may be opened or closed during operation using the protec-
tive glove (Fig. 13).
1.3 Lighting
At "DOWN" grate position (winter setting)
Leave the ash door, the heating door and the grate door open, using a coal lighter or wood
shavings and small firewood and lay them on the grate. Light through the grate door and
shut the heating door (Fig. 14).
When the wood is burning well, add fuel through the heating door. Only close the ash door
after about 5 minutes and open the secondary air slide. The required heat level can now be
selected on the temperature controller (12).
When the grate is in the "UP" position (summer setting)
The procedure is identical to when it is in the "DOWN" position but it is lighted through the
heating door (Fig. 15). If the outside temperature is over +15 °C smoke could come out
because of the low chimney draw. A kindled fire with wood shavings in the chimney as a
pilot fire can help.
ATTENTION
In the interests of air pollution prevention no paper should be used when lighting
and the combustion chamber should be fuelled with two to three charges at inter-
vals of 10 to 15 minutes and not all at once.
WARNING
When the heating stove is operating, any air/moisture extractor must be switched off
in the room where the stove is installed. Danger of extracting flue gas from the
stove.

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1.4 Heating and slow burning
Heating with wood
- Secondary air slide (11) "OPEN"
Lay long and thick pieces of wood in at least two charges on thick embers. Split firewood
improves the burning quality and controllability. Hardwood is more productive than soft-
wood. If the chimney draught is not sufficient (possibly high outside temperature) and the
up draught regulated by the temperature controller, the ash door can be left open for a
short time after the wood has been put on, to get the fire going.
Slow burning with wood
The burning speed is so set using the temperature control (12), that the required tempera-
ture is maintained.
Using wood, particularly softwood, it is only possible to have limited slow burning.
Heating with coal
-Secondary air slide (11) "OPEN"
-Only add coal after a strong basic ember glow is established and then in at least two
charges with a period of about 15 minutes between each.
1.5 Heating between seasons and during the summer
If the chimney draught is poor because of high outside temperatures, then the flue gases
cannot be drawn off completely.
Therefore:
- put on less fuel,
- do not turn temperature controller back too far and
- riddle more often, to keep the draught in the stove going
1.6 Cooking
Please only use pots with solid flat bottoms and lids that fit.
Cooking in winter
- Grate position "DOWN"
- temperature control to "3"
- secondary air slide "OPEN"
During the colder times of the year, the stove will mostly be used to heat and prepare do-
mestic hot water, whereby is still possible to cook immediately above the fire itself. To
cook, add wood and/or coal in small charges to create a high level ember bed, which will
heat the hotplate adequately.
After cooking, turn the temperature regulator back to the desired temperature.

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Cooking in summer
- Grate position "UP"
- temperature control to "3"
- secondary air slide "OPEN"
At the warmer times of the year, the stove will mostly only be used to cook, and prepare
domestic hot water. Here the "UP" grate position is used, to ensure that the room where
the stove is and the hot water tank do not become excessively overheated.
If the hotplate is not hot enough, the ash door can be opened as an exception. If the heat
capacity of the domestic water boiler is exceeded then the excess energy is let off through
the heat sink (closed circuit).
This must not be allowed to be a regular operating situation; otherwise it will lead to
rapid furring up of the heat exchanger
1.7 Care and cleaning
The period of time between cleaning the stove and the flue pipes depends largely on the
type of fuel used, the draught and the mode of operation. It should certainly be cleaned if:
- heating performance drops,
- the fuel burns poorly despite powerful air intake (open ash door),
- smoke occasionally comes out (flue gas smell in room) or
- the period for heating is over.
- Unnecessary dust escape can be avoided if all openings on the stove remain closed, if
they are not actually being used as accesses to clean through at the time.
- Take the hotplate out (Fig. 16) and clean out the chimney connection (Fig. 17). The
hotplate can remain in place for the upper smoke connection.
- Clean the ducts from top to bottom using the soot scraper and brush through after-
wards (Fig. 18)
- To clean the left and right draught ducts:
- remove the ash pan and
- push cleaning slides to the back of each using the fire iron (Fig. 19 & 20)
1.7.1 Ceramic glass surfaces
Clean the window and/or Ceran plate before first use with a clean damp cloth. Then rub a
few drops of a ceramic glass protection product onto the glass / Ceran plate with a paper
towel.
After wiping this and polishing it dry, the high quality surface is now covered with an invisi-
ble film. The helps to keep the glass pane /Ceran plate clean and if repeated regularly,
makes it easy to clean

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1.8 Causes of faults
Your stove is built to the latest technical know- how. Nevertheless faults may occur, which
are caused by the chimney, fuel or the heating and plumbing.
Fault
Check / Rectify
Stove smokes
-in summer
-in winter
-when commissioning
- open the ash door briefly. High outside temperatures
cause poor chimney draught.
- warm up chimney with a paper fire in the chimney or
warm up in stove.
- open the ash door briefly.
- do not use damp or smoke intensive fuel.
- fill the fire box slowly, bit by bit.
- when was the stove last cleaned?
- a short period with some smoke when the stove is first
commissioned is quite normal and will soon disappear.
Stove does not draw properly
- is the draught from the chimney too weak?
- is the pipe connection from oven to chimney leaking?
- are all cleaning doors on the chimney and on the stove
properly closed?
- is the fresh air intake guaranteed in the room where the
stove is installed? Doors and windows should not be abso-
lutely air tight.
- is the chimney leaking or overloaded?
To little heat when cooking
and roasting
- is the temperature control set at "3"?
- briefly open the ash door.
Too much heat when cooking
and roasting
- is the temperature control turned down?
- add less fuel.
Operating temperature not
reached
- was energy rich fuel used (Fuel)?
- is the installation properly dimensioned?
- was enough fuel added?
Grate jams when riddled
- has slag been removed?
- have nails or building timber possibly got jammed?
Bubbling sounds
- are the radiators turned up?
- has the circulating pump broken down?
- is the installation ventilated?
Heat sink actuated
- is the ash door closed?
- if necessary wind the grate up.
Condensation water in stove
- is the fuel too damp?
- is the return water temperature too low?