Kratki LEO Series User manual

Manufacturer:
www.kratki.com
Kratki.pl Marek Bal
ul. W. Gombrowicza 4
26-660 Wsola/Jedlińsk
kratki
MANUAL AND OPERATION INSTRUCTIONS
FOR GAS SPACE HEATERS LEO SERIES
Installation and operating instructions

2
This manual, together with all photographs, illustrations and trademarks, are protected by copyright. All rights reserved. Neither
the manual nor any material contained herein may be reproduced without the written permission of the author. The information
contained in this document is subject to change without notice. The manufacturer reserves the right to amend and make changes
to this manual without obligation to inform anyone.

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Table of contents
Introduction 4
Description of the device 4
Dimensions (mm) 7
Category, model and version of LEO gas fireplace. 9
Elements of the set 10
Safety 10
Installation of the appliance 11
INSTALLATION REQUIREMENTS. 12
Rules 14
Placing of the appliance 14
Ventilation grates in the housing 15
Connecting the device using a concentric chimney system 17
Runing a concentric flue and air duct through the side wall of the building - type
C11: 22
Runing a concentric flue and air duct through the side wall of the building - type
C31: 23
Runing a concentric flue and air duct through the side wall of the building - type
C91: 23
Runing a concentric flue and air duct through the side wall of the building - type
C61: 25
Exhaust gas restrictors 26
Installation of the control system 29
Receiver Antenna 30
Connecting the device to the gas installation 30
Control flame height 34
Gas outlet pressure regulation 34
Checking for leaks 35
Power connection 35
Installation of the device 36
Installation of decorative elements 36
First Start 39
Operation 39
Control 40
Technical parameters of the gas 49
Kraje przeznaczenia Błąd! Nie zdefiniowano zakładki.
Service and maintenance of the device 53
Battery replacement 55
Possible problems and solutions 56
Failure codes 58
Environmental Protection 59
Terms of warranty 60

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ATTENTION!!!
Installation, leak testing and maintenance of the device may only be carried out by a
qualified installer / service technician who has the right permissions for the region.
Introduction
The LEO series are series of a gas fired space heaters and each of them is a closed
heating device fueled with combustible gas. This device has CE mark and uses high-
class automation for gas control. The fireplace complies with strict European directives
regarding safety, the environment and energy consumption.
The air supplied to the combustion chamber is taken from outside the residential
building through the use of a concentric chimney system. This eliminates the
phenomenon of cooling the room due to the lack of the need to mount a ventilation
grille that provides the air flow necessary for the proper operation of the fireplace, as
is the case with heating devices with an open combustion chamber. This type of
solution provides the user with safety because it prevents the fumes from getting
directly into the room in which the fireplace is located. Before installing the fireplace,
read these instructions. The information contained in it will allow you to operate the
device without any problems. The instructions should be kept for the entire lifetime of
the fireplace.
Description of the device
The LEO gas space heater is designed for your safety and comfort and it is designed
for supplying with natural gas, liquefied propane gas or liquefied propane-butane gas.
The user can remotely control the fireplace using the remote control. Air supply to the
combustion chamber and flue gas discharge is carried out by using a concentric
chimney system. It is equipped with special elements protecting against uncontrolled
outflow of gas from the installation. Regardless of the model, the method of its
connection to the gas installation and the chimney system is identical. The LEO series
has been designed for your safety and comfort. The user can remotely control the
fireplace using the remote control. Air supply to the combustion chamber and flue gas
discharge is carried out by using a concentric chimney system. The LEO series is
equipped with special elements protecting against uncontrolled outflow of gas from the
installation.

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LEO/45/68
LEO/L/45/68
LEO/LP/45/68
LEO/P/45/68
LEO/70
LEO/L/70
LEO/LP/70
LEO/P/70
LEO/76/62
LEO/L/76/62
LEO/LP/76/62
LEO/P/76/62
LEO/100
LEO/TUNEL/LP/100
LEO/L/100
LEO/TUNEL/100
LEO/LP/100
LEO/P/100

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LEO/200
LEO/L/200
LEO/LP/200
LEO/P/200
Fig. 1. LEO series gas fireplaces

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Dimensions (mm)
Model
A
B
C
D
E
F
G
LEO/45/68
502
454
684
224
448
185
1207
LEO/L/45/68
538
514
684
224
448
185
1207
LEO/LP/45/68
574
540
684
224
448
185
1207
LEO/P/45/68
538
514
684
224
448
185
1207
LEO/70
746
700
355
224
345
126
793
LEO/L/70
792
769
355
224
345
126
793
LEO/LP/70
838
804
355
224
345
126
793
LEO/P/70
792
769
355
224
345
126
793
LEO/76/62
812
764
624
224
448
185
1147
LEO/L/76/62
848
824
624
224
448
185
1147
LEO/LP/76/62
884
850
624
224
448
185
1147
LEO/P/76/62
848
824
624
224
448
185
1147
LEO/100
1065
1019
355
222,5
451
201
878,5
LEO/L/100
1140
1065,5
355
222,5
451
201
878,5
LEO/LP/100
1155
1121
355
222,5
451
201
878,5
LEO/P/100
1140
1065,5
355
222,5
451
201
878,5
LEO/TUNEL/LP/100
1448
1062
355
222,5
438
936
817
LEO/TUNEL/100
1129
989
355
258
426
565
819
LEO/200
2000
1952
357
221,5
453
185
879
LEO/L/200
2032
2008
357
221,5
453
185
879
LEO/LP/200
2076
2044
357
221,5
453
185
879
LEO/P/200
2032
2008
357
221,5
453
185
879

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LEO
LEO/L
LEO/LP
LEO/P
Fig. 2. Dimensions of LEO series gas fireplaces

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Category, model and version of LEO gas fireplace.
Model and version
Category
Pressure and gas
type
Destination Countries
LEO 100
LEO 200
LEO 70
LEO 76/62
LEO 45/68
FRONT
I3B/P
30 mbar, G30
BE, CY, DK, EE, FR, GB,
GR, HU, HR, IT, LT, NL,
NO, RO, SE, SI, SK, TR
37 mbar, G30
PL
L
50 mbar, G30
AT, CH, DE, SK
I3P
30 mbar, G31
FI, NL, RO
P
37 mbar, G31
BE, CH, CZ, ES, FR, GB,
GR, HR, IE, IT, LT, NL,
PL, PT, SI, SK
I2H
20 mbar, G20
AT, CH, CY, CZ, DK, DE,
EE, ES, FI, GB, GR, HR,
IE, IT, LT, LU, LV, NO,
PT, RO, SE, SI, SK, TR
LP
I2E
20 mbar, G20
DE, PL, RO
TUNEL
I2EK
20 mbar, G20
NL
TUNEL/LP
25 mbar, G25.3
NL

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Elements of the set
Please make sure that the kit of elements have not been damaged during transport.
The inspection should be carried out in the presence of the installer. Before installing
the fireplace insert, please familiarize yourself with all the elements provided with the
device. If any damage or missing items are found, please contact customer service.
The user receives in the set:
✓Mertik Maxitrol GV60 controller.
✓Mertik Maxitrol B6R receiver.
✓8-symbol B6R remote control.
✓8 mm compression fitting.
✓6 mm compression fitting.
✓One-piece clamping fitting 6 mm.
✓3/8 "cap - 2 pcs
✓G60-ZUS09 chopper block.
✓G30-ZP2M control burner block.
✓Control burner nozzle - NG (designation 27-2) / LPG (designation 22)
✓Gasket for the control burner block.
✓G30-ZPT1500A thermocouple.
✓The spark magnet cable.
✓Wires connecting the chopper block to the receiver.
✓8-wire cable connecting the gas controller with the receiver.
✓1/2 "reduction plug for 3/8".
✓Set of decorative stones.
✓Gas connection hoses 6 and 8 mm in diameter.
✓Distribution box.
✓G60-ZBE power supply module (Option).
Safety
Carefully read the following information:
✓Connection of the fireplace to the gas installation and its maintenance may only
be carried out by a qualified fitter or service technician for heating gas
appliances.
✓If the control flame extinguishes, wait for a minimum of five minutes before the
next attempt to light it up.
✓If the device does not start up with the first 5 attempts, wait 5 minutes before
trying again. It is strictly forbidden to make any modifications to the design of
the fireplace.
✓Elements of the gas control system must not be exposed to moisture.
✓It is forbidden to start the device without the glass pane installed.
✓Do not touch the hot parts of the fireplace, in particular the glass.
✓Children or other oblivious people in the vicinity of the working device should
not remain unattended.
✓It is forbidden to place decorative elements for the lining of the combustion
chamber in front of the control flame.

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✓Do not place flammable materials near the fireplace.
✓It is forbidden to place flammable materials in the combustion chamber.
✓If you feel a gas leak, do not start the device. Stop the gas supply as soon as
possible, ventilate the room in which the fireplace is located and contact a
service technician.
✓Broken glass should be replaced immediately. Operation of the appliance with
broken or removed glass is strictly prohibited.
✓In case of improper functioning of the device, shut off the gas supply and contact
a service technician.
PLEASE NOTE !!!
During operation, the device heats up and it is essential to avoid touching any
surface of the device in normal working conditions, including the windscreen,
side windows, front and side surfaces (called working surfaces) of the body that
may be outside the device's body. In the case of installation of the device in
places where contact with the device may be particularly vulnerable, ie infirm
persons, children or other persons requiring special attention, it is necessary to
protect the device in a way that prevents contact with the working device
mentioned above.
Installation of the appliance
The fireplace is equipped with elements protecting against uncontrolled outflow of gas
from the main burner. Before connecting the device, read all connection diagrams in
the current chapter. The gas cartridge is adapted to connect a special concentric
system that allows simultaneous supply of the fireplace in the air and flue gas
discharge outside the building. In order to ensure correct operation of the device, the
assembly of the fireplace can only be carried out by a person with appropriate
permissions. Before allowing the gas cartridge for use, the installer should:
✓Carry out leak tests for gas connections made.
✓Check the correct connection of individual system components.
✓Check the correct connection of the chimney insert.
✓Make a trial firing in the cartridge.
✓Check the correct operation of all system components and system security.

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INSTALLATION REQUIREMENTS.
Fig. 3. Minimum distances of the gas cartridge from non-combustible housing elements
The distances indicated above are the minimum distances from a non-flammable
housing, unless another provision states otherwise.
The main reason for fires associated with the fireplace is the lack of maintenance of
the required distances (free air space) from the walls of the housing. It is very important
that this fireplace and ventilation system is installed in accordance with these
instructions.
WARNING:
There is a great risk of fire hazard if the gaps specified in this manual are not observed.
The device is designed and approved for use with a non-flammable housing as shown
in the diagrams with an interval of min. 6 cm on the back and sides of the device, if it
is not a version with side glazing. To adapt to different thicknesses of bodywork
finishing materials, please follow the instructions below.
The material used for the installation must not transfer weight to the device or be
connected to the device in any way. They must not cover any part of the removable
glass panel or control system.
The total thickness of the non-flammable building material must be determined so that
the surface can be flush with the front of the device. The total thickness of the cladding
can be from 15 mm to 30 mm.
WARNING: Consider installation because there must be no flammable materials at a
distance of at least 60 cm from the device.
Inspection doors - are required in all LEO gas fireplace inserts. They allow efficient
and convenient access to the receiver and the control valve of the device, which are
necessary for the proper operation of the device. The inspection door has been
designed and should be installed in a place that does not disturb the aesthetics of the
finish of the fireplace or the surrounding living space. The service technician should
also service the gas controls of the device passing through the device itself. This
procedure requires removing the glass panels, removing the decorative elements of

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the combustion chamber, the search located on the base of the burner, burner and
burner base from the device. The service technician will reinstall all these components
after completing service.
Fig. 4. Installation of the gas controller and the receiver in the inspection door
Requirement for the installation of an inspection door
If an inspection box is installed (it can be installed, depending on the needs, on the left
or right of the body), at least 1 m of free space should be left for service purposes.
NOTE: the inspection door should not be installed higher than 25 cm above floor level
due to extreme heat inside the building.
Fireplace sellers / installers should consult their clients, their architects and / or interior
designers about the pros and cons of each service option to identify critical installation
requirements that could prevent or hinder servicing.
Ventilation grates - are required for all LEO series models and must be considered
when designing the housing. This allows the heat exchange accumulated inside the
fireplace housing to be released into the room, which also helps to keep the fireplace
walls and the housing cool.
One of the grilles must be at the bottom and the other at the top of the fireplace casing,
so we recommend that the upper one is placed a minimum of 15 cm and a maximum
of 50 cm below the ceiling in the fireplace, and the lower one a minimum of 5 cm above
the floor but not higher than 10 cm below bottom edge of the cover. It can be placed
on the front, sides or back of the fireplace casing, as long as it is directed inwards and
not outwards.
The minimum active field required for the cross-section of ventilation grates in
the series is:
LEO 100
LEO 200
LEO 70
LEO 76/62
LEO 45/68
Inlet grate
800 cm2
1300 cm2
500 cm2
700 cm2
500 cm2
Outlet grate
1000 cm2
1600 cm2
600 cm2
900 cm2
600 cm2
These are the minimum required cross-sectional areas of the grates, but there are no
contraindications to make them larger. Ventilation grilles can be in the form of barrels
or grille with blinds. If you use blinds, make sure that the cross-sectional area of the
free space in between the grille with the blinds is equal to or greater than the minimum
required for the model.

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Adjustable feet - All fireplaces in the LEO series are standard equipped with leveling
legs, which can change the height of the device. If necessary, you can also build a
platform to raise the firebox higher. Despite this solution, remember that the legs
cannot be removed.
Fig. 5. Leveling foot and adjustable clamping handle
Housing requirements - This fireplace requires non-combustible material to complete
the building. The flanges on the front surface of the fireplace have a facing thickness
of 15 mm.
Buildings made of materials thicker than 15 mm - If the cladding material is more
than 15 mm thick (for example: brick or river stone), install the body at the junction with
the masking flange. It is also possible to make a mask with a wider collar on request.
Contact an authorized reseller for additional information.
Hearth protection requirements - This fireplace requires non-flammable floor
protection made of tiles, marble, bricks or other non-flammable material at least 30 mm
thick, which does not protrude above the base of the device.
Rules
The device should be installed in accordance with local regulations and standards in
force in the given country or region. Connection to chimney flues, wall and roof
passages as well as all types of elements used for fireplace installation should be made
based on applicable building law standards. The fireplace insert has been tested based
on the EN-613 European Standard for Gas-fired convection room heaters.
Placing of the appliance
Before connecting the device to the gas and chimney installation, you should carefully
choose the place of its installation. The insert should be located so that the air-flue gas
system has the smallest number of bends. This will guarantee an appropriate chimney
draft. It is also important that after connecting the insert to the gas installation, the
flexible connection pipes are not exposed to excessive twisting. The fireplace should
be at a minimum distance.
60 mm from non-flammable casing elements (Fig. 3). The temperature of the walls
exposed to direct fireplace must not be higher than 80 ° C. Under no circumstances
should the device be placed near flammable materials such as wooden furniture, rugs

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or curtains. Due to the possibility of ignition, it is forbidden to dry clothes, towels, etc.
near the gas insert. The fireplace should be installed on a stable non-flammable
surface. The gas insert is equipped with special feet with adjustable height and two
adjustable mounting brackets enabling the device to be attached to the wall. It is
forbidden to install the gas insert on the back or side. Only vertical mounting is allowed.
Ventilation grates in the housing
Installation of the device is only allowed in a non-flammable housing as shown in the
diagrams with a 60 mm spacing at the back and sides of the device, only where there
is no glazing. In the case of side glazing, it is allowed to mount the building walls to the
front of the device's cover. To adapt to different thicknesses and finishes of the furnace
materials, follow the instructions below.
Buildings and other decorative elements of the body can be installed on the surface of
the device, provided that the minimum spacing between the device and non-
combustible material is kept in accordance with the requirements contained in the
instructions and provided that they are non-combustible. The material surrounding the
device (body) must not transfer weight to the device or be connected to the device in
any way. They must not cover the removable glass panel or control system in any way,
or hinder their removal or service.
The total thickness of the non-combustible cladding must be determined to allow the
surface to be flush with the front of the device. The total thickness of the cladding can
be from 15 mm to 30 mm.
WARNING: You should always consider installation very carefully before taking any
steps to install the device, since there must be no flammable materials at a distance of
at least 100 cm from this fireplace.

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Fig. 6. Diagram showing minimum requirements for the location of ventilation grilles
and inspection doors.

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Connecting the device using a concentric chimney system
Coaxial ducts can be led through the wall or roof of the building. The building
regulations in force in the given region must be observed. Remember to check the flue
gas pipe with the terminal for blockage. If there is a risk of blockage of the duct or when
the duct is blocked in such a way as to prevent the correct flow of air and / or exhaust
gas and when the duct is blocked preventing easy removal of the obstruction, it is
imperative to call the installer or another person with appropriate authorization to
remove blockages of the flue and / or flue pipe terminal. This is a prerequisite for proper
operation of the heater.
Gas cartridges are adapted for a special combustion air supply. The chimney system
used to connect the LEO 100, LEO 45/68 and LEO 76/62 series is based on elements
consisting of two coaxial ducts with an external diameter of 150 mm responsible for
supplying air to the combustion chamber and an internal diameter of 100 mm for flue
gas evacuation. The LEO 200 series works with an analogous coaxial system, of which
the inner conductor has a diameter of 130 mm, while the outer one has 200 mm. In
both cases, the coaxial cable should be terminated with a special cap enabling the
proper functioning of the system. All elements of the set should have the required
approvals and CE certificates. The LEO gas heaters series can cooperate only with
the following concentric ones:
NOTE: The use of one of the following flue systems for installation is mandatory (only
these three systems are approved for installation with your device):
- DARCO concentric system model SGSP 100/150. This system is available in online
stores and local stores, which can be found at official website www.darco.com.pl
- POUJOULET concentric system model BI-GAS 100/150. This system is available in
online stores and local stores, which can be found at official website www.poujoulet.pl
- JEREMIAS concentric system model TWIN-GAS 100/150. This system is available
in online stores and local stores, which can be found at official website www.jeremias.pl

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In the event of condensation in the chimney flue, the installer should use a drainage
element (droplet separator). Each elbow used for the exhaust air exhaust system is
counted as a meter length and this should be taken into account when calculating the
total length of the exhaust air duct. All concentric system channels cannot be isolated.
When routing the chimney through the external wall or roof of the building:
➢Install the system in accordance with applicable regulations, taking into account
any difficulties associated with wind pressure on the terminal.
➢In the case of a flammable wall, ensure an additional distance of 5 cm between
the wall and the outer surface of the coaxial pipe. Fill in the remaining space
with thermal insulation, which additionally prevents moisture from entering the
building.
➢If the flue pipe is close to flammable walls, secure them with a minimum of 25
cm thermal insulation.
➢Begin installation of the concentric system by installing a one-meter vertical
section at the outlet of the fireplace (minimum height).
➢Connect the individual elements of the system using special straps to ensure
proper tightness.
➢If necessary, stabilize the individual components of the concentric system using
wall brackets.
➢The coaxial cable must be terminated with a windproof terminal. A special
horizontal terminal is used when leading through a wall (type C11), while a
vertical terminal (type C31) is used when leading through a roof.

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Unless otherwise provided by local regulations, the horizontal or vertical
terminal should be installed according to the following guidelines.
Fig. 7. Possible variants of the concentric air exhaust system output for the LEO
series devices
In the case of a chimney system outlet near a roof window (A - B), the air intake must
be installed a minimum of 0.6 m above the top of the window. In addition, a distance
of 1 m - sides / top and 2 m - bottom should be kept between the chimney system and
the edge of the roof window. In the case of a standard roof-mounted window (H), the
terminal may not be installed below its lower edge and at a distance of at least 1 m
from its sides. Other requirements are presented below.

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A - B Roof window
H Roof window
C Height above ground level
D - E Distance below the balcony and
from the roof edge
F Distance from obscuring breaks
G Distance from doors and windows