MONDEX Klapi User manual
INSTALLATION AND
OPERATING INSTRUCTIONS
Klapi heater
12/2017
2
Installation and Operating Instructions Klapi
Contents
1 General safety instructions 3
2 Klapi heater 4
Heater components 4
3 Technical specifications 5
Rated power, efficiency, emissions, average
temperature of combustion gases 5
Heater dimensions, weight and required quantity
of stones 5
4 Sauna room 6
Sauna room ventilation 6
Keeping the sauna room clean 6
Floor protection 6
Safety distances 7
Light protective material 8
5 Heater assembly and installation 9
Before installation 9
Preheating 9
Stacking the stones 10
Fuel 10
Connecting the heater to a brickwork flue via the
rear chimney duct opening 11
Connecting the heater to a brickwork flue via the
upper chimney duct opening 11
Changing the operating direction of the door 12
6 Use of Klapi heater 12
Warming up the heater 12
Adjusting the chimney draft 13
Checking the sweeping doors 13
Water thrown on heater 13
Chimney flue 14
Maintenance and service 14
Maintenance; spare parts 14
Warranty 14
Changing the heater stones 14
7 Troubleshooting 15
No draught in chimney, smoke enters the sauna 15
Sauna fails to heat 15
Heater stones fail to heat 15
Heater generates odour 15
Effect of heating on the sauna room 15
8 Service history 16
3
Installation and Operating Instructions Klapi
1. General safety information
Always check the adequacy of the fire protection distances!
Failure to observe the connection instructions may result in a risk of fire!
Always check the sauna room before operating the heater!
Due to the risk of fire, do not use the sauna to dry clothes or laundry.
Exercise caution with a hot heater, since the heater stones and metal parts become very hot
and can cause burns.
Steam from the heater is burning hot and may cause severe burns.
Children, disabled and ill persons who are using the sauna should be supervised.
Benches and floors may be slippery, therefore move in the sauna with caution.
Do not go to a hot sauna under the influence of narcotic substances (alcohol, drugs,
narcotics, etc.).
A stone compartment without stones or filled improperly will present a risk of fire!
Covering the heater is a fire hazard.
Extended periods in a hot sauna will raise the temperature of the body, which may be
dangerous.
Maritime and humid climates may corrode the metal surfaces of the heater.
To ensure safe use of the sauna, please read these safety instructions first!
This device is not intended for use by children or persons whose physical, sensory or mental
abilities or lack of experience and knowledge prevent them from using the device safely, without the
supervision of a person responsible for their safety or before they have been instructed on how to use
the device.
Children should be supervised to ensure that they do not play with the device.
All local regulations, including those referring to local and European standards, must be complied with
when installing a fireplace.
This device complies with the requirements of:
Mondex pursues an active policy of product development and continuous improvement. For this
reason, Mondex reserves the right to make changes relating to the design and technical specifications
of their products without prior notice.
4
Installation and Operating Instructions Klapi
2. Klapi heater
Klapi heater, steel Klapi heater, black
1
2
3
4
5
5
11
5
Klapi heater components
1) Firebox door (the operating
direction can be changed)
2) Ash pan
3) Upper chimney duct
4) Rear chimney duct
5) Sweeping doors (3)
5
Installation and Operating Instructions Klapi
Heater Klapi 16
Sauna size 8–16 m³
Rated power 13 kW
Efficiency 71%
CO content with an oxygen content of 13% 0.51%
Flue gas temperature 379 °C
Total amount of wood / fillings / heating time 9.5 kg / 3 / 90 min
Heater dimensions, weight and required quantity of stones
3. Technical specifications
Table 3.1
Type Height
(mm)
Diameter
(mm)
Firebox cover
thickness (mm)
Flue Ø
(mm)
Weight
without
stones (kg)
Stone
amount
(kg)
Klapi 16 750 460 8 115 52 70
Table 3.2
Rated power, efficiency, emissions, average temperature of flue gases*
750 mm
460 mm
Ø 115 mm
113.5 mm
* Mondex Klapi. The sauna heater has been tested in accordance with standard EN 15821. Test report No. VTT-S-01932-15.
6
Installation and Operating Instructions Klapi
4. Sauna room
Protecting the floor
Concrete floor without tiles (A)
The heater can be installed directly on a concrete floor if the concrete slab thickness is a minimum of 60
mm. Make sure that there are no electrical wires or water pipes in the concrete cast under the heater.
Combustible floor material (B)
Protect the floor with a concrete slab that is 60 cm thick, at a minimum, and extends at least 300 mm
around the heater on the sides and in the rear (unless the heater is by a wall) and at least 400 mm to
the front of the heater door. Ensure the slab is slightly elevated from the floor surface in order to keep
the floor material dry.
Tile floor (C)
Floor glues and plasters and waterproofing materials used under the tiles do not withstand thermal
radiation emitted by the heater. Protect the floor with a fireplace safety pad or equivalent protection
against thermal radiation.
300 mm
300 mm
300 mm
400 mm
60 mm 60 mm
A B C
Sauna room ventilation
Gravity ventilation
The fresh supply air is conducted to just above the floor level near the heater, and the exhaust air
exits as far as possible from the heater, near the ceiling. The heater circulates the air efficiently, so
the exhaust air opening is mainly tasked with removing moisture from the sauna after bathing. The
minimum diameter of the fresh supply air opening is 100 mm or equivalent.
Mechanical ventilation
The fresh supply air is conducted to approximately 500 mm above the heater and the exhaust air exits
near the floor, for example, under the benches. The minimum diameter of the fresh supply air opening
is 100 mm or equivalent.
Keeping the sauna room clean
We recommend that bench covers be used when bathing to prevent sweat from coming into contact
with the benches. We recommend that the sauna benches, walls, and floor be washed every six
months, at a minimum. The surfaces in the sauna should be washed with a scrubbing brush and a
cleaning agent specifically intended for washing the sauna.
7
Installation and Operating Instructions Klapi
Type on the sides in the front in the rear upward Sauna size
Klapi 16 250 500 250 1250 8–16 m³
Table 4.3 Safety distances to inflammable material (mm) The safety distances are measured from the outer
surfaces of the product.
Safety distances
Ceiling (A)
The minimum safety distance from the top
surface of the heater to the ceiling is 1250 mm.
Masonry walls (C)
Leave a 50 mm gap between the heater and the
wall. This requires that the front and one side of
the heater are unobstructed the air to circulate.
The space required for operation and main-
tenance (D). The user of the heater needs at least
1 m2 of space in front of the heater.
Heater in a recessed wall
If the heater is installed in a recessed wall, leave
a 100 mm gap between the heater and the walls.
The space required for operation and
maintenance (D). The user of the heater needs at
least 1 m2 of space in front of the heater.
Walls and benches made of inflammable
material (B)
The minimum safety distances between the
heater and inflammable materials: 250 mm to
the sides and rear, 500 mm to the front.
The space required for operation and main-
tenance (D). The user of the heater needs at least
1 m2 of space in front of the heater.
1250 mm
B
250 50
A
C
50
50
C
D
500
100
DB
C
100 100
D
B
250
250
250
500
B
8
Installation and Operating Instructions Klapi
Light protective material
Safety distances to inflammable materials may be reduced to a half by using a single layer of light
protective material and to a quarter by using a double layer.
A single layer of light protective material (1x) can consist of a non-flammable, fibre-reinforced cement
board (e.g. Minerit board) with thickness of at least 7 mm or a metal plate with thickness of at least 1
mm.
A double layer of light protective material (2x) can be made by using two boards of the above-
mentioned materials. The fastening points must be sufficiently close to each other in order to ensure a
stable structure.
Leave a gap of a minimum of 30 mm between the surface to be protected and the board(s). The light
protective material should extend at least 600 mm above the heater.
A single layer of light protective material equals to brickwork of at least 55 mm thick. A double layer of
light protective material equals to brickwork of at least 110 mm thick.
The brickwork must be open on the sides, and the distance to the surface being protected must be a
minimum of 30 mm.
Heater installation
The adjustable feet of the heater allow you to install the heater directly and firmly even on an inclined
floor surface. The adjustment range is 0–30 mm. Leave a generous gap between the heater and the
floor.
Screw the adjustable feet downwards so that you can rotate them with an open-end wrench, for
example, when the heater is in place.
NOTE! The adjustable feet may scratch the surface of the floor if the heater is moved on the floor.
600
1x
A
A
2x
30
30
30
A (min) B (min)
1x 125 250
2x 62.5 250
B
B
9
Installation and Operating Instructions Klapi
Storage
Store the heater in its original package in an upright position and in a
warm and dry location until it is installed.
Delivery content
The heater stones are not included in the delivery. Inspect the heater
components visually. If you notice any discrepancies or deficiencies,
please contact the store where you purchased the heater. Do not
expose heater parts to blows and denting when taking them out of the
package. The sauna’s floor surface should also be properly protected
before you begin the installation.
5. Heater assembly and installation
Before installation
1) Prior to installation, ensure that the safety distance requirements are met.
2) There should not be any electrical equipment or wires or inflammable materials within the safety
distances of the heater.
3) Please also note the safety distances of the chimney flue! If the safety distance requirements are not
met, additional protective materials must be used.
4) For more detailed instructions on fire safety provisions, please contact the fire authorities.
Preheating
Pre-heat the heater outdoors or in a well-ventilated area. The surface of the heater is painted. Some of
the paint will burn out during the first heating, which results in the heater body emitting smoke. When
no more smoke is emitted, the heater is ready for use.
If the heater is preheated outdoors, chimney pipes should be fitted to ensure a proper draught and to
burn off any protective coatings on them.
The surface treatment of the heater achieves its final strength during the first heating of the heater.
Avoid rubbing or wiping the painted surfaces of the heater before the first heating.
For the first heating, one load (about 5 kg) of wood is sufficient.
Pre-heat the heater without stones. Stack the stones into the heater only when the heater has cooled
down completely after the preheating.
Always keep the firebox door closed during the preheating!
Do not throw water on the heater during the preheating. Doing so may damage the paint coating.
Observe the safety distances between the heater and any inflammable material in accordance with the
instructions (see page 7) when installing the heater.
10
Installation and Operating Instructions Klapi
Stacking the stones
Only use stones intended for sauna heaters. Suitable stones include peridotite, olivine diabase, and
olivine. To ensure adequate circulation of air in the heater, the most suitable stone size to be placed on
top of the firebox is 10–15 cm in diameter. The size (Ø) of stones to be stacked between the body and
the firebox is 5–10 cm. You will need two boxes of both sizes.
Stones collected from the nature are not suitable as heater stones.
Rinse any dust off of the heater stones before stacking them in the heater. Stack bigger stones on the
bottom of the stone compartment and the smaller stones to the top. Ensure proper air circulation
between the stones by stacking them loosely.
Stacking the stones loosely ensures the ventilation in the heater remains unobstructed. Stacking the
stones in this manner also shortens the heating time. Continue stacking gradually in this manner until
all stones have been placed.
Dents caused by the user are not covered by Mondex’s warranty or other product liability. When
stacking the stones, be careful not to dent the heater’s metal surfaces to avoid damaging them. For
more information on the warranty and replacing stones, see page 14.
Fuel
Since the moisture of firewood significantly affects the cleanliness of combustion as well as the
efficiency of the heater, use only dry wood to fuel the heater. Logs are dry when they make a clinking
sound when they are knocked against each other.
Suitable kindling material includes bark or newspaper.
Store the fuel in the fuel storage. A small quantity of firewood can also be stored in the vicinity of the
heater, as long as the firewood temperature does not exceed 80 °C.
Do not burn the following materials in the heater:
- Chipboard, plastic, coal, briquettes, pellets, or other such fuels with a high calorific value.
- Painted or impregnated wood.
- Waste (for example, PVC plastics, textiles, leather, rubber, disposable diapers).
- Garden waste (for example, grass, leaves).
Table of contents
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