Kratki A18 Inserts with Water Jacket User Manual

Kratki A18 Inserts with Water Jacke

Product Specifications

• Brand: Kratki
• Model: Water Jacket Insert
• Recommended Fuel: Hardwood logs (e.g., beech, oak, ash) with specific dimensions
• Maximum Moisture Content for Fuel: 20%
• Warranty: Registration required on www.kratki.com

Product Usage Instructions

Initial Information
The fireplace insert should not be the sole heating device in a building. It is important to carefully read and follow the entire instruction manual for optimal performance and user satisfaction.

Installation Guidelines
Ensure the fireplace insert is surrounded by non-combustible material extending at least 30 cm beyond the door edges. The chimney height should be calculated based on the formula F = 0.003 x Q h [m2], where Q is the nominal thermal power of the fireplace insert in kW and h is the chimney height.

Connection to Central Heating System
The connection to the central heating system should be done using fittings or collars separately.

Water Maintenance
Water level in the fireplace and central heating system should be maintained outside the fireplace insert area (not closer than 1.0m) on the return water pipe. Installation and startup should be performed by qualified technicians.

Fuel Recommendations
Recommended fuel types are hardwood logs such as beech, oak, ash, etc., with specific dimensions. The moisture content of the wood should not exceed 20%.

Safety Precautions

1. Avoid using water to extinguish the fireplace.
2. Ensure proper ventilation in the installation room.
3. Keep flammable materials away from the fireplace.

Replacement Parts
Contact the manufacturer for replacement parts throughout the product’s lifespan.

Frequently Asked Questions:

• Q: How should I prevent water overheating in the fireplace insert with a water jacket?
  

  • A: The manufacturer recommends using Microprocessor Fireplace Controller, Microprocessor Pump Controller, ZZA-400-S Emergency Power Supply, and ZZA-300-A Emergency Power Supply to prevent water overheating.

• Q: What are the consequences of excessive condensation in the fireplace with a water jacket?
  

  • A: Excessive condensation due to improper use can lead to issues like water dripping inside the fireplace, ultimately causing leaks.

WARUNKIEM OTRZYMANIA GWARANCJI

www.kratki.com

Initial information

In some countries this appliance may not be the only source of heat for your building.

NOTE: To avoid the risk of fire, the installation of this appliance should comply with all relevant Health and Safety Regulations for your area and the Technical Instructions contained in this manual. The design of the Fireplace and installation should be prepared by a qualified professional. The chimney should be checked by a chimney sweep prior to the installation of the appliance. Following the installation, both a technical and Safety test should be carried out on the unit and signed off on by qualified specialists.

You are recommended to read carefully the whole of the manual to make the best of the fireplace insert with water jacket and be satisfied with your purchase. The a user is liable for the results of the failure to observe the guidelines of the assembly manual. It is recommended that you read the complete manual carefully in order that you get the most out of your purchase. Failure to comply with the guidelines in the manual leaves the owner/user liable.

The fireplace insert with water jacket should be installed in accordance with this operating manual. Particular attention should be paid to

• assembling the components of the fireplace insert with water jacket in accordance with their intended use
• connecting the fireplace insert with water jacket to the flue gas evacuation duct and the chimney flue
• providing required ventilation to the room where the fireplace insert with water jacket is installed
• properly connecting the fireplace insert with water jacket to the central heating system and/or hot water circulation system.

Detailed information related to installing the fireplace insert with water jacket is included in further sections of this manual.
Requirements related to the conditions and principles of installations of such hearths as the fireplace inserts with water jacket can be found in the standards valid in each country as well as in state and local regulations. The provisions included in them must be observed.

Within the territory of Poland the following legislative acts are in force

• the Regulation of the Minister of Infrastructure dated 12 April 2002 on technical conditions that buildings and their location should meet (Dz.U. no. 75 dated 15.06.2002 Chapter 4;
• PN-91/B-02413 standard Heat industry and heat engineering;
• PN-EN 13229:2002 standard Insert appliances including open fires fired by solid fuels. Requirements and test methods; PN-EN 13229:2002/A1:2005 In- sert appliances including open fires fired by solid fuels. Requirements and test methods;
• PN-EN 13229:2002/A2:2005 (U) Insert appliances including open fires fired by solid fuel. Requirements and test methods
  You are recommended to strictly observe the requirements included in the above regulations.

Intended use
Fireplace inserts with water jacket are designed to be fired with deciduous wood. They are used to heat flats and rooms where they are installed. They may be used as an additional source of heat. They may also be used in conjunction with a storage water heater or may be used as a source of heating for central heating.

The insert structure should be constructed in such a way so as to ensure assembly and disassembly of the fireplace insert with water jacket without its destruction or damage. Moreover, it should ensure the access of air necessary for burning and ventilation by the use of air grates on both sides of a fireplace in the lower part of the insert structure and a bigger-sized outlet grate (in the upper part of the housing) as well as constant access to operate a flue gases throttle or a chimney draft controller (damper).

Description of the appliance

Drawing 1. General construction diagram of the fireplace insert Suzie with a vertical air heater with water jacket.
Drawing 2. General construction diagram of the fireplace insert with water jacket.

The main component of the fireplace insert with water jacket is its steel water jacket (16) where the combustion chamber (1) is located. The front wall of the combustion chamber is the cast iron door (2) equipped with a homogenous heat-resistant glass ceramics (3) and a locking bolt (4). The door is settled in a cast iron frame (5) screwed to the water body. From the bottom the combustion chamber

(1) is limited by a cast iron base (6) screwed to the water body where an ashpan chamber is located. Above the base there is a cast iron grate (10) where fuel is burnt. The grate should be placed with its finning faced upwards. An ashpan cast iron guard (11) protects against spilling of incandescent fuel from the combustion chamber after opening the door (2) Ashpan waste: ash and residues of unburnt fuel are accumulated in a sliding ashpan drawer (7) located under the grate. In the front part of the ashpan drawer a window (8) equipped with a controllable throttle with a handle (9) for controlling the amount of primary air needed to burn fuel. The secondary air needed to reheat gases arising from fuel burning and protecting against the blackening of the heat-resistant glass (3) is supplied by the slot in the upper part of the glass. Over the combustion chamber there are smoke tubes (17) whose diameter depends on the insert power, welded to lateral inner walls of the water body constituting natural convection ducts for flue gases flow and simultaneously intensifying the exchange of heat. During the operation after the fire-up of fuel flue gases flow along the combustion chamber walls between the smoke tubes to the vent connector (12) then through the flue to the chimney. In the vent connector there is a starting rotationally controlled damper (13). A knob (15) is used to adjust the angle of the damper opening by a special mechanism (14).

The inlet of circulating water from the system to the fireplace insert with water jacket takes place by a lower stub pipes (18). The discharge of heated water from the fireplace insert to the central heating system (with water set) takes place also by upper stub pipe (19).

The rest of stub pipes (20) are used to fix the temperature sensor (MSK), (21) coil pipe, (22) thermal valve sensor.

Selection of the thermal power of central heating system or domestic hot water system The primary criterion for the selection of the system thermal power is the maximum transient power of the fireplace insert water jacket. A central heating system or domestic hot water system may carry the rated (average) power of the water jacket declared by its Producer when its takeoff power is equal or close to the maximum transient power of the water jacket. Relevant technical data are included in table 1.

Assembly and installation of the fireplace insert with water jacket

The fireplace insert should be installed by a person having required qualifications. Before starting to connect the fireplace insert with water jacket to the central heating and smoke removal system, read carefully this manual and check the completeness of the appliance equipment.
Before placing the fireplace insert with water jacket, prepare a foundation minimum 30cm above the floor (not relevant in all countries, depending on the material and construction of the floor) of the room where the fireplace insert with water jacket is to be operated. The appliance placed on the floor should be carefully leveled and then it should be connected to the central heating and smoke removal duct, the fittings of the fireplace insert with water jacket should be assembled.

The principles of safe installation of the fireplace insert with water Jacke
Health and safety rules, principles of correct and safe assembly of the fireplace insert with water jacket, ventilation and connection to the flue gas removal system are defined in the Regulation of the Minister of Infrastructure dated 12 April 2002 DZ.U. no. 75 dated 15 June 2002 in chapter 6 § 265 p.1; § 266 p.1; § 267 p.1.

In accordance with these principles

• The fireplace insert with water jacket should be installed on a minimum 15 cm thick-incombustible surface. The easily combustible floor near the fireplace door must be protected with a minimum 30cm wide-strip of incombustible material reaching at least 30 cm away from the edges of doors on each side.
• The fireplace insert with water jacket, connecting pipes and openings for cleaning should be away from the unprotected easily combustible parts of a building, at a distance of at least 60 cm and from the ones protected by 25mm-thick-plaster or other equivalent lining – at least 30cm.
• The room where the fireplace insert with water jacket is installed fresh air inflow must be ensured for burning fuel in the fireplace and for ventilation.
• The flue gas ducts and smoke ducts as well as ventilation ducts in the room where the fireplace with water jacket will be installed must be made of certificated non-combustible materials.
  (vary from country to country).

Assembly principles of the flue gas extraction system
The primary condition of safe and economic operation of the fireplace insert with water jacket is the chimney flue in working order and appropriately selected in terms of cross section. The technical condition of the chimney should be assessed by a chimney sweeper. The chimney flue should be free from connections of other appliances.

The section of the chimney is determined acc. to the following formula

F – section of the chimney [m2],
Q – rated thermal power of the fireplace insert [kW],
h – chimney height [m].

The vent connector of the fireplace insert with water jacket should be connected to the chimney by means of a steel pipe, made of certificated material, that should be placed on the vent connector outlet and settled in the chimney.

The chimney should be made on non-combustible materials enabling the maintenance of constant temperature. Otherwise the chimney should be lined with an isolative material or a two-jacket chimney should be installed (in the part protruding over the roof). The chimney and chimney flues should be tested for air-tightness, no leaks are permissible. The chimney may have a circular or square section with the cross section not smaller than 14 x 14 cmor diameter Ø150 mm for fireplaces with fume outlet size up to 0.25 m 2 in the case of larger fume outlet size, chimney dimension 14 x 27 cm or diameter Ø180 mm. The section of the chimney flue should be the same all along its he ight, there should be no sudden narrowings or flue gas flow direction changes. Only one heating appliance may be connected to one chimney flue.

Assembly principles of the central heating system

NOTE: The fireplace inserts with water jackets within the territory of Poland are designed to works as a source of heating in the gravitational or pump water heating system of the open system secured in accordance with PN-91/B-02413 standard, in which the permissible water temperature does not exceed 100°C, the permissible working pressure is not higher than the pressure for the applainces used, the circulating water can be used exclusively for heating purposes and cannot be collected from the system.

The fireplace insert with water jacket should be connected with the central heating system by means of pie union joints or collars. The fireplace and central heating system should be refilled with water outside the area of the fireplace insert (not closer than 1.0m) on the return water duct.

The installation and commissioning of the fireplace insert with water jacket should be carried out by a qualified assembly team.

Fuel

Recommended fuel

• the producer recommends to use logs of decidueus trees such as: beech, hornbeam, oak, alder, birch, ash-tree etc. of the following dimensions of logs or chips: ca. 30 cm long and from 30 cm to 50 cm.
• the moisture content of the wood used for firing the appliance should not exceed 20% which corresponds to the wood seasoned for two years after felling, stored under a roof.

Unrecommended fuel
The appliance should not be fired with logs or chips with the moisture content exceeding 20% as it may result in failure to achieve declared technical parameters – lower calorific value.

It is not recommended to use too small logs or chips to fire the appliance as it may result in sudden increase of water temperature – boiling of water as well as a significant increase of flue gas temperature and fire of the chimney.

It is not recommended to use coniferous or resinous wood logs or chips since they cause excessive dirt of the appliance and necessary of frequent cleaning of the appliance and the chimney flue.

Prohibited fuel
It is prohibited to burn in the appliance any waste, particularly chemical one, due the emission of toxic substances in the process of burning.

Working principle

Fire-up and fuel charge
Kindling in a fireplace insert
The only correct and recommended way to light fireplaces is the so-called lighting from above. To light a fire in a fireplace insert, open all the dampers and air dampers and then use the handle to open the door of the insert. First, in the central part of the firebox, alternating billets (no more than three layers with a diameter of about 10 – 13 cm) are placed. On top of the billets are placed smaller logs (diameter of about 2 – 5 cm) in such a way as to ensure free air flow between them. At the very top, a fire starter should be placed. It is forbidden to use for kindling materials other than those provided in the instruction manual. It is forbidden to use flammable chemical products for kindling, such as oil, gasoline, solvents and others.
Light the kindling and close the door. Kindling may take several to several minutes. If there is insufficient draught in the chimney, unseal the fireplace door at the initial stage of kindling by swinging it open. If the fireplace insert is not equipped with an air intake from the outside, it is good practice to open the window in the room where the appliance is located.

Refueling and regulating combustion
After lighting the fire, wait for a layer of embers to form, and then refill the insert’s combustion chamber with wood, arranging the fuel in a way that will reasonably fill its hearth. The loading weight should be calculated based on the power of the insert. It is assumed that 1 kg of wood with a moisture content of up to 20% yields 3 kW of power. When refilling the fuel, follow the rule that opening the front door should be done slowly while opening the shaft, if the insert is equipped with it. After firing up the refilled fuel, close the air damper so that the combustion process does not proceed too rapidly. Before closing the air damper, make sure that the fuel burns intensely enough that reducing the air supply will not extinguish the fire. If the fireplace stove is equipped with a vent, it should be closed during this phase of combustion. During combustion, the front door of the fireplace insert must be closed. During the final phase of the combustion cycle, the air damper must be opened 100% to allow the remaining fuel to burn out. Re-loading should be done only when only the ignition layer in the form of embers remains in the fireplace. The intensity of the fuel combustion process in the fireplace insert should be regulated, because long-lasting maintenance of maximum combustion temperatures, can lead to overheating of sensitive fireplace components and their damage. Controlling the combustion process also reduces fuel consumption, as it lengthens the combustion cycle, and ensures optimal use of energy.

Normal operation of the fireplace insert with water jacket

To fire the fireplace insert with water jacket use the logs or chips of deciduous trees of the following dimensions: ca. 30 cm long and from 30 cm to 50 cm in circumference or lignite briquette.

To achieve the rated thermal power of the fireplace insert with water jacket fill up the hearth with 4-5wood logs and uncover completely the air throttle (9). To achieve the thermal power that is lower than the rated power fill up the hearth with 3-5 bigger wood logs and cover the air throttle (9) as needed.

Operation with minimum power in extended time
The fireplace insert with water jacket may operate with minimum thermal power and the burning duration exceeds 3 hours in case of filling up with 3 bigger logs and completely closed air throttle (9) at ca. 6 Pa chimney flue (the bigger the diameter of round timber the lower thermal load).
If necessary (the chimney makes a too high draft) to control the chimney draft, equip the flue in its lower part with a draft arrester – be careful with the smoke.

Recommendations related to normal operation of the fireplace insert with water jacket During the operation of heating appliances the following principles in particular should be observed

1. Before firing up the fireplace insert with water jacket:

   • check if the system is filled with water appropriately,
   • check up the chimney flue with accessories (draft arrestor, washout holes etc.),
   • check if the expansion vessel with inlet and outlet pipes is in working order and free from obstacles.

2. When using the fireplace insert with water jacket use appropriate tools and protective gloves.

3. If your system is going to be out of use for a period during the winter/cold weather, it is advisable to drain the water down. Failure to do so may result in burst pipes or even the unit itself due to freezing.

4. Ensure proper ventilation supply in the room where you are going to install a fireplace insert with water jacket.

5. Remove any easily combustible and caustic materials from the surroundings of the fireplace insert with water jacket.

6. Do not use a mechanical exhaust ventilation.

7. Use water as the heating medium (purified water if possible). In the regions where big drops of temperature occur anti-freezing liquid may be added to the water.

8. A few practical pieces of advice facilitating the operation and increasing the safety of users of the fireplace inserts with water jacket:

   • The glass will get very hot during normal operation (>100°C) – be very careful, it relates mainly to children,

   • Never use water for extinguishing fire in fireplaces with water jacket

   • the hearth when radiating emits lots of thermal energy. Do not leave any easily combustible and objects in the distance smaller than 100 cm from the glass,

   • Removing the ash from the fireplace should be done with a metal or non-combustible container. Remember that even seemingly cooled down ash may be very hot and cause fire, to ensure optimal operation of the appliance a ventilation system for the room it is installed must be provided.
     In each room where the appliance is installed predict the gravitational flow of air required for combustion

   • usually there is a clearance of ca. 2 cm under the entrance door; an opening covered by a blind can be made to ensure inflow of air, in case of fire close the primary air throttle with the handle (9), close the damper (13) with a knob (15) and the draft arrester (if installed) and call the fire service.
     Due to the safety of the insert use during its operation the removal of a handle is recommended.

Cleaning the ashpan and chimney flues
For the purpose of efficient burning of fuel in the appliance, the combustion chamber (1), grate (10), vent connector (17) and chimney flues should be cleaned periodically.

The smoke gas ducts should be cleaned with a wire brush. Chimney flues should be cleaned mechanically a few times a year, obligatorily once per a heating season. The chimney flues should be cleaned by a specialist chimney sweep company.

When cleaning the chimney

• check the condition of the appliance and in particular of the elements ensuring tightness: seals and closures,
• check the condition of the chimney flues and the connecting pipe,
• all connectors should show good mechanical resistance and tightness.

Spare parts
The Company kratki.pl guarantees the delivery of spare parts throughout the whole period of the appliance operation. For this purpose contact our trading department or nearest point of sale.

Guarantee conditions

The use of the fireplace insert with water jacket, its connection to the chimney and operating conditions must be in compliance with this operating manual. Any reconstructions or modifications to the structure of the fireplace insert are prohibited. The producer gives a 5-year-guarantee of its effective operation from the moment of the insert purchase. The buyer of the fireplace insert is obliged to read the manual of the fireplace insert, the conditions of the guarantee, which he should confirm with his entry in the guarantee card in the moment of purchase. When submitting a claim a User of the fire-place insert is obliged to present a claim report, a filled-in guarantee card and a bill. Submitting the above mentioned documentation is necessary for any claims to be considered. A claim consideration should be carried out within 14 days as of the date of its written claim submitting. Any processing, modifications and changes to the insert structure result in immediate loss of a producer’s guarantee.

The guarantee covers

• cast iron elements;
• movable elements of the mechanisms to control a vent connector flap and a comb of the ashpan housing;
• fire grate and insulations of the fireplace for the period of 1 year as of the moment of purchase. The guarantee does not cover:
• fireplace lining (vermiculite, chamotte etc);
• fire-resistant glass (resistant to the temperature up to 800°C)
• any defects arising from the failure to observe the provisions of the operating manual, in particular related to the fuel and tinder to be used,
• any defects arising during the installation, enclosing and commissioning of the fireplace insert,
• damages caused by thermal stresses of the fireplace insert (related to the operation of the fireplace insert inconsistent with the manual provisions).

The guarantee is extended by the period starting from the moment of claim submission and ending on the day of notifying the buyer of the repair completion. This time will be confirmed in the guarantee card. Any defects attributable to incorrect operation, storage, incompetent maintenance, inconsistent with the conditions defined in the operating manual and caused by other reasons not attributable to the producer result in the loss of the guarantee, if such defects have contributed to quality changes of the fireplace insert.

The use of coal as fuel in all our inserts is prohibited. Firing the insert with coal in any case results in the loss of guarantee for the hearth. A client notifying of a defect within the guarantee is obliged each time to sign a declaration that coal or any other prohibited fuels have not been used in our fireplace insert. If a suspicion of the use of above mentioned fuels arises, the fireplace will be subject of an expertise to test the presence of prohibited substances. If in the course of the analysis it is found that such substances have been used the client loses any guarantee right and is obliged to incur all costs related to the claim (also the expertise costs).

This guarantee card serves as the basis of the provision of guarantee repairs free of charge. The guarantee card without a date, seal, signatures as well as with amendments introduced by unauthorized persons is no longer valid.

Guarantee duplicates shall not be issued!!!
Appliance serial number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appliance type. . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The above regulations concerning the guarantee in no way suspend, limit or exclude the consumer’s rights with regard to nonconformity of goods with the contract, as indicated by the Act of 27 July 2002 on specific terms and conditions of consumer sale.
In order to constantly improve its products, the Kratki.pl company reserves to right to modify its devices without prior notice.

SAFETY DURING THE OPERATION OF THE FIREPLACE INSERT WITH WATER JACKET
When using the fireplace insert with water jacket the following principles need to be observed

• the fireplace insert with water jacket cannot work without water;
• do not pour water over the fire in the combustion chamber;
• the fire-resistant ceramics of front sets during fuel burning in the fireplace insert with water jacket may reach the temperature exceeding 100°C;
• free natural inflow of air indispensable for fuel burning and room ventilation should be ensured in the room where the fireplace insert with water jacket is installed;
• do not fill up the combustion chamber with too much fuel, particularly with too shredded one, as it may result in damage to the elements of front set and disturbances within the operation of the fireplace insert with water jacket.

TO ENSURE SAFETY OF THE FIREPLACES INSERT WITH WATER JACKET THE PRODUCER RECOMMENDS THE USE OF:

• Microprocessor Fireplace Controller
• Microprocessor Pomp Controller
• Emergency Power Supply Unit ZZA-400-S
• Emergency Power Supply Unit ZZA-300-A

The latest version – fireplace insert with safety coil pipe
To prevent water from overheating in the central heating system a built-in cooling coil pipe can be used. In such case inside the water jacket a cool coil is installed. This coil is made of a copper pipe of 12mm section. Both tips of the coils are led outside the fireplace.

To ensure best performance of the heat exchanger the safety device of the operation of the fireplace insert itself (the process of heating up the water in the fireplace) with a thermostatic valve is at
the same time fitted. For this purpose the thermostatic valve is best. The thermostatic valve is not controlled by pressure, it is controlled by water temperature. This valve is placed into the water inflow pipe from the waterline to the coil. The thermostatic valve is connected with the temperature sensor by means of a 1.3m-long-copper tube. The temperature sensor is settled on a stub pipe (23) prepared specially for this purpose; thanks to which it submerges directly in water that fills the water jacket, consequently the thermostatic valve on the other end of the copper tube is controlled by the water temperature. When the water in the fireplace reaches the temperature of 97°C the valve opens and cold water from the water line flows through the coil tube. This way the water in the fireplace water jacket is cooled. Such solution has one more advantage, namely the thermal safety-device of the fire- place operation does not need current. Cold water from the water line may flow through the cooling coil both ways and it has no impact on the effectiveness of the heat exchanger operation.

Maintenance

If the thermostatic valve is not tight, the water from the feeding system all the time flows in through the coil tube regardless of the temperature of water in the water jacket. In regular conditions the valve seat and head should be just cleaned from time to time from deposit and dirt by pressing the red button a few times and rinsing the above mentioned parts with a stream of water. However, if it is not enough, the following actions should be taken:

1. Screw on the ball valve cutting off the water form the water line. This valve should always be under the service connection with the thermostatic valve (i.e. under the pipe supplying water to the coil of the heat exchanger).
2. Screw off the hexagonal screw and pull out the valve conical head.
3. Clean all elements of the thermostatic valve, in particular the valve seat, with the stream of running water.
4. Put together the thermostatic valve and finally screw on quite tightly the hexagonal screw.

Condensation
Condensation inside the firebox is as a result of improper operation of your stove. The effect of this can be

• Condensation forming on the inner walls of the firebox/stove and in extreme cases leakage out of the unit,
• Smoke exiting the stove back in to the room,
• Dirty Glass and dirty combustion chamber,
• Loss of Damper control due to sticking.

In order to avoid the above, we would recommend using the guidelines as set out below

• Set temperature to between 70 and 75oC,
• Set the circulation pump thermostat to 55oC.

Setting the thermostat at this level will allow the installation to heat up faster.
The water temperature difference between the desired working temperature, and the return water temperature should not differ by more than 20oC and also that the return water temperature be not less than 50oC. That the wood moisture content is no more than 20%. This is related to the dew point temperature (release of water vapour from the timber) of 48oC. Proper combustion of fuel is essential. The preferred fuel is seasoned wood e.g. beech, birch with a moisture content of no more than 20%. Regular cleaning of the combustion chamber/Firebox and exhaust duct is recommended, especially if there is a noticeable carbon build up.

AQUARIA insert
Construction diagram of a fireplace insert with the water system. Drawing 3.

The main part of the fireplace insert with a water system is the steel water jacket (16) located above the combustion chamber (1). The steel door (2) equipped with a uniform heatproof glass (3) and a closing lock with a handle (4) constitutes the front wall of the combustion chamber (1).

The door is mounted in the frame (5). The combustion chamber (1) is inlaid with Termotec forms
(27). The double-jacket floor whose construction also constitutes the air supply chamber (6) serves as the base of the system. Air supply is performed by means of the outdoor air supply stub pipe with the

The lower vermiculite deflector (26) is located above the combustion chamber. The upper steel deflector (25) is located above it. The vertical water heater fire tubes (17) are welded onto the upper inside walls of the water heater (18). The steel deflector (25) and the vertical water heater fire tubes constitute the natural convection channel for fume flow, intensifying heat exchange. During the burning process inside the insert, fumes wash the combustion chamber (1) walls, then pass under the lower and upper deflectors and flow through the vertical fire tubes (17) and then sweep the water heater (18), intensively transmitting heat to the water. Next, they flow to the flue (10) and through the smoke channel leading to the chimney.

An adjustable damper (11) is installed in the flue. The position of the damper is adjusted by means of the damper mechanism (12). Pulling the damper mechanism out by means of the damper handle (13) is equivalent to opening the fume outlet cover (11). The lower damper (14) is an integral part of the insert. It is located directly above the combustion chamber (1) and it constitutes an extension of the upper steel deflector (25) along its entire length. Opening it in the preliminary phase of the burning process makes the path of the fumes to the chimney short, which automatically generates better draught. Closing it by means of the lower damper handle (15) means directing the fumes between the two deflectors – the lower (26) and the upper (25) one (smoke shelf), which makes the fume path longer. Drawing 7.; thanks to which the burning of fuel particles which have not been burned earlier in the combustion chamber (1) takes place in the space between the deflectors and above the steel deflector. Additional heat gained in that way is transmitted to the vertical water heater fire tubes (17) and to the water jacket (system) (16). Damper (13) handles (15) are equipped with gradual damper position adjustment.
The water jacket (system) (16) is equipped with fixed stub pipes which are used to connect it to the heated water central heating system, thermal sensors and the excessive heat transmission system
– the heating coil (24). The stub pipes (20) and (19) with 1 inch female thread (G1’’) are intended for connecting the insert to the central heating system (the right and the left side of the insert – cross connection for supply/return recommended). The stub pipes (19) with 1 inch female thread (G1’’) fit-ted in the lower part of the water jacket (system) (16) are intended for connecting water return from the central heating installation. The stub pipes (20) fitted in the upper part of the jacket are intended for connecting heated water outlet to the central heating installation (the right and the left side of the insert – cross connection for supply/return recommended).

Stub pipes with male thread (G1/2’’) (23) constitute the heating coil (24) ends. The stub pipe of the thermal valve sensor (22) with female thread (G1/2’’) is intended for connecting the capillary tube of the safety valve thermal sensor which controls water flow activation through the heating coil (24). The heating coil (24) is an element that protects the water jacket against overheating. If heat trans-mission through the central heating installation is lower than the capacity generated by the insert, the water temperature in the water jacket may rise to a dangerous level. In such a case, when the temperature of 95ºC +/- 2 ºC is exceeded, the thermal valve opens water flow through the heating coil, which cools the water in the water jacket (system). The element (21) is the mounting socket of the fireplace controller thermal valve, which controls the operation of the system (central heating pumps) and of the optional air throttling valve. Such a throttling valve is mounted in the air supply channel from outside of the building and controls the amount of air drawn through the fireplace; it provides optimization of the burning process.

Attention!
Fireplace inserts with water installation are designed to work as a source of heat in open and closed water heating systems with adequate protection, where the acceptable supply water temperature does not exceed 100°C, the acceptable working pressure is not higher than for the applied devices and the circulating water is used for heating purposes only and cannot be taken away from the system.

Kratki.pl inserts can work in both open and closed systems of central heating installations. Working pressure in a closed system is 2 bar.

An exemplary diagram of connecting a fireplace insert with a water jacket.
An example of connection with a chimney in a closed system

An exemplary diagram of connecting a fireplace insert with a water jacket in an open system.

Legend

 Thermostatic valve

Check valve

Pressure diaphragm safety valve

Ball valve

Central heating pump

Electronic throttle

MSK driver

Water outflow

Expansion vessel

Expansion vessel

Heat collector

Fireplace

Plate exchanger

Piec C.O.

| ANTEK 8| ERYK 10| MAJA 12| FRANEK 12| WIKTOR 12| FELIX 14| LUCY 16|

ZUZIA 15

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ZUZIA 19

---|---|---|---|---|---|---|---|---|---
1.| 10| 10| 12| 12| 12| 13| 16| 12| 17
2.| 7| 9| 10| 6| 8| 11| 10| 8| 13
3.| 17| 17| 18| 32| 17| 17| 39| 38| 40,5
4.| 180| 180| 180| 200| 200| 200| 200| 200| 200
5.| ~72| ~72| ~75| ~81| ~71| ~71| ~84| ~81| ~75
6.| 0,69%| 0,69%| 0,29%| 0,10%| 0,69%| 0,31%| 0,09%| 0,09%| 0,25%
7.| 2 bar
8.| 240| 240| 330| 230| 240| 322| 200| 255| 234
9.| 330| 450| 330| 450| 450| 450| 500| 500| 500
10.| 17| 17| 18| 13| 17| 17| 39| 38| 40,5
11.| 11a.
12.| 12a.
13.| 30| 30| 60| 120| 120| 60| 180| 120| 120
14.| 60| 60| 120| 240| 240| 120| 360| 240| 240
| MBM 10| MBZ13| MBO 15| MBA 17| LUCY 12| LUCY 16| LUCY 20| ZOSIA 14 DECO
---|---|---|---|---|---|---|---|---
1.| 12| 13| 15| 17| 7| 16| 20| 14
2.| 7| 7| 8| 9| 10| 10| 13| 7,5
3.| 27| 34| 42| 47| 35| 39| 45| 40
4.| 180| 200| 200| 200| 200| 200| 200| 200
5.| ~85| 81~| 83~| 86~| ~82| ~84| ~82| ~85
6.| 0,1%| 0,1%| 0,1%| 0 %| 0,1%| 0,09%| 0%| 0,10%
7.| 2 bar
8.| 232| 262| 306| 314,5| 215| 257| 293| 200
9.| 500| 500| 500| 500| 500| 500| 500| 450
10.| 27| 32| 7| 8| 24| 25| 22| 20
11.| 11a.
12.| 12a.
13.| 135| 180| 240| 240| 150| 180| 240| 195
14.| 270| 360| 420| 480| 300| 360| 420| 390
ZUZIA NP 24| OLIWIA 17| OLIWIA 22| AMELIA 24| AMELIA 30| NATALA 14| MILA 24***| NADIA 10
---|---|---|---|---|---|---|---
24| 17| 22| 24| 15| 14| 24| 10
21| 13| 13| 19| 8| 13| 16| 6
98| 44,2| 60,9| 98,4| 12| 84,7| 53,2| 32
200| 200| 200| 220| 220| 180| 200| 200
~81| ~75| ~75| ~78| ~85| ~76| ~77| ~82
0,30%| 0,26%| 0,30%| 0,3%| 0,09%| 0,56%| 0,27%| 0,01%
2 bar
227| 325| 328| 301| 200| 274| 334| 225
500| 500| 500| 500| 500| 500| 700| 350
95| 35| 46,5| 57| 60| 40| 72| 32
11a.
12a.
360| 1220| 120| 120| 210| 60| 360| 219
720| 240| 240| 240| 420| 120| 720| 438

Table
mg/Nm3 мг/Nм3
depending on the building insulation
combustion chamber lined with Termotec

1. nominal power (kW)
2. average water output (kW)
3. water capacity (l)
4. flue diameter
5. thermal efficiency (%)
6. CO emissions (at 13% O2) ≤ (%)
7. operating pressure (bar)
8. flue gas temperature (C°)
9. wood log length (mm)
10. dust emission (mg/mn3)/mn3)
11. Material / 11a. Steel
12. Fuel type
    • Seasoned hardwood, (moisture content max. 20%)
13. inlet vent covers, minimum active area (cm2)
14. outlet vent covers minimum active surface area (cm2)

Drawing 1

Drawing 2

1. combustion chamber
2. door
3. glass
4. latch with a handle
5. frame
6. air supply chamber
7. primary air supply adjustment
8. outdoor air supply
9. boarding
10. flue (fume outlet)
11. flue cover (damper)
12. damper mechanism
13. damper handle
14. lower damper mechanism
15. lower damper handle
16. water jacket (system)
17. heater fire-tubes
18. water heater
19. central heating system return stub pipe (G1’’)
20. water outlet to the central heating system (G1’’)
21. MSK temperature sensor socket
22. thermal valve sensor stub pipe (G 1/2’’)
23. heating coil stub pipe (G1/2’’ A)
24. heating coil
25. upper deflector – steel
26. lower deflector – vermiculite
27. combustion chamber lining (Termotec)

FIREPLACE LIGHTING

Drawing 4. Air flow in the AQUARIO insert

1. open upper damper
2. vertical fire tubes
3. open lower damper
4. upper deflector
5. lower deflector
6. clean glass air
7. combustion chamber
8. primary air (full opening)
9. water jacket
10. closed lower damper
11. primary air (supply according to demand)

| | A| | B| | C| | D| | E| | F
---|---|---|---|---|---|---|---|---|---|---|---|---
AQUARIO/A/14/W| | 605| | 448| | 1273| | 790| | 524| | Ø200
AQUARIO/A/18/W| | 605| | 448| | 1427| | 790| | 524| | Ø200
AQUARIO/M/8/W| | 464| | 334| | 1001| | 637| | 442| | Ø180
AQUARIO/M/12/W| | 464| | 334| | 1201| | 637| | 442| | Ø180
AQUARIO/Z/10/W| | 519| | 358| | 1181| | 692| | 524| | Ø200
AQUARIO/Z/14/W| | 519| | 358| | 1335| | 692| | 524| | Ø200
AQUARIO/O/12/W| | 605| | 358| | 1181| | 778| | 524| | Ø200
AQUARIO/O/16/W| | 605| | 358| | 1335| | 778| | 524| | Ø200
| AQUARIO

/A/14/W

| AQUARIO

/A/18/W

| AQUARIO

/M/8/W

| AQUARIO

/M/12/W

| AQUARIO

/Z/10/W

| AQUARIO

/Z/14/W

| AQUARIO

/O/12/W

| AQUARIO

/O/16/W

---|---|---|---|---|---|---|---|---
1.| 14| 18| 8| 12,3| 10| 12| 12| 16,1
2.| 9,8| 12,5| 5,5| 8,1| 7,1| 10,6| 8,4| 10,8
3.| 58| 88| 37| 47| 52| 83| 58| 88
4.| 200| 200| 180| 180| 200| 200| 200| 200
5.| 84,3| 86,5| 81,7| 86,7| 82,5| 86| 83,1| 84,4
6.| 0,08%| 0,07%| 0,1%| 0,09%| 0,1%| 0,08%| 0,08%| 0,1%
7.| 2 bar
8.| 220| 207| 227| 198| 221| 250| 186| 204
9.| 500| 500| 450| 450| 550| 550| 550| 550
10.| 30| 26| 38| 31| 36| 35| 34| 37
11.| 11a.
12.| 12a.
13.| 120| 165| 75| 120| 90| 240| 105| 210
14.| 240| 330| 150| 240| 180| 120| 210| 420

1. nominal power (kW)
2. average water output (kW)
3. water capacity (l)
4. flue diameter
5. thermal efficiency (%)
6. CO emissions (at 13% O2) ≤ (%)
7. operating pressure (bar)
8. flue gas temperature (C°)
9. wood log length (mm)
10. dust emission (mg/mn3)/mn3)
11. Material / 11a. Steel
12. Fuel type
13. 12a. Seasoned hardwood, (moisture content max. 20%)
14. inlet vent covers, minimum active area (cm2)
15. outlet vent covers minimum active surface area (cm2)

LUCY PW

Disposal

How to dispose of packaging and end-of-life product.
It is recommended to dispose of the packaging and unnecessary end-of-life product as follows.

Packaging

• wood parts ( disposable pallet) put into the container with segregated waste.
• plastic packaging put into the container with segregated waste.
• give the screws and handles to the recycle collection point
• moisture separator bag(applies to export shipments made by sea) put into the segregated waste.

REGISTER OF SMOKE DUCT INSPECTIONS

Inspection during the insert installation| Date, signature and seal of the chimney sweeper
Date, signature and seal of the chimney sweeper| Date, signature and seal of the chimney sweeper
Date, signature and seal of the chimney sweeper| Date, signature and seal of the chimney sweeper
Date, signature and seal of the chimney sweeper| Date, signature and seal of the chimney sweeper
Date, signature and seal of the chimney sweeper| Date, signature and seal of the chimney sweeper
Date, signature and seal of the chimney sweeper| Date, signature and seal of the chimney sweeper
Date, signature and seal of the chimney sweeper| Date, signature and seal of the chimney sweeper
SELLER

Name:| Seller’s seal and signature;
Address:
Tel/fax:
Date of sale:
INSERT BUYER
The fireplace insert should be installed in accordance with the rules and regulations valid in the country, the manual provisions by the installer having required qualifications.

I hereby declare that having read the operating manual and the guarantee conditions in case of failure to observe the provisions included there the producer bears no liability for the guarantee.

| Date and legible signature of the Buyer;
INSERT INSTALLER
Name of the installer’s company:|
Installer’s address:|
Tel/fax:|
Date of commissioning:|
I hereby declare that the fireplace insert installed by my company meets the requirements of the operating manual is installed in compliance with the appropriate relative standards.| Installer’s seal and signature;

• Kratki.pl Marek Bal
• ul. Gombrowicza 4, Wsola
• 26-660 Jedlińsk, Poland
• tel. 00 48 48 389 99 00 www.kratki.com
• www.facebook.com
• kratkipl www.youtube.com
• kratkipl www.instagram.com/kratkipl

References

• Modern Fireplaces & wood-burning stoves! Best prices! | Kratki
• ? Polski producent kominków i biokominków (@kratkipl) • Instagram photos and videos
• Modern Fireplaces & wood-burning stoves! Best prices! | Kratki

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