klover PELLET FIRE PLACE 22 Service manual

ENGLISH
Pellet insert
stove PELLET
FIRE PLACE 22
INSTALLATION, USE AND
MAINTENANCE, USEFUL TIPS
Main Revision 2.1
FPH_supplement:

SERVICE DECLARATION
Ref. Annex III EU Regulation no. 305/2011
DoP/KLOVER-010
1. Identification number
:
PFP22
2. Model and/or lot no. and/or serial no. (Art.11-4)
:
PELLET FIRE PLACE 22
3. Intended use of the product according to the relevant
harmonised technical specification
:
Home heating appliance fed with wood
pellets which can also produce domestic hot
water
4. Name or trademark of the manufacturer (Art11-5)
:
KLOVER s.r.l.
I - 37047 San Bonifacio (VR) –Via A. Volta, 8
5. Name and address of the representative (Art.12-2)
:
-
6. Assessment and verification system of the performance
constancy (Annex 5)
:
System 3
7. Notified laboratory
:
NB 1880
ACTECO s.r.l.
I - 33084 Cordenons (PN) –Via Amman, 41
Number of test report (based on System 3)
:
0619-12NB, 0621-12NB
8. Declared performances
HARMONISED TECHNICAL SPECIFICATION
EN 14785
PERFORMANCE FEATURES
PERFORMANCE
Fire resistance
A1
Distance from combustible material
200 mm
Fuel spillage risk
Compliant
Emission of combustion products
- Nominal power
- Reduced power
CO at 13% of O20.011 %
CO at 13% of O20.009 %
Effective temperature
Compliant
Electrical safety
Compliant
Accessibility and cleaning
Compliant
Maximum operating pressure
2.5 bar
Mechanical strength
NPD (performance not determined)
Thermal performance
- Nominal power (reduced)
- Nominal power (reduced) yielded to the environment
- Nominal power (reduced) yielded to water
20.1 kW (6.3 kW)
1.8 kW (0.7 kW)
18.3 kW (5.6 kW)
Yield
- Nominal power
- Reduced power
ɳ 90.2 %
ɳ 95.9 %
Flue gas temperature
- Nominal power
- Reduced power
T 155 °C
T 70.7 °C
9. The performance of the product referred to in points 1 and 2 is compliant with the declared performance in
point 8.
This declaration is released on the sole responsibility of the manufacturer referred to in point 4.
Signed in the name and on behalf of the manufacturer by:
San Bonifacio (VR), 24/08/2015
Mario Muraro
Chairman of the Board

1
CONTENTS
CONTENTS ........................................................................................................................................................................ 1
INTRODUCTION................................................................................................................................................................. 3
IMPORTANT SAFETY INSTRUCTIONS................................................................................................................................... 3
INSTALLATION REGULATIONS ............................................................................................................................................ 4
HEALTH AND SAFETY........................................................................................................................................................ 4
THE MACHINE AND THE PELLETS ................................................................................................................................. 4
COMPONENTS OF THE APPLIANCE ..................................................................................................................................... 4
OVERALL DIMENSIONS ...................................................................................................................................................... 6
CONNECTIONS DATA SHEET .............................................................................................................................................. 7
TECHNICAL SPECIFICATIONS............................................................................................................................................. 8
PELLET PROPERTIES ........................................................................................................................................................ 9
REQUIREMENTS OF THE PLACE OF INSTALLATION................................................................................................... 9
POSITIONING.................................................................................................................................................................... 9
SPACES AROUND AND ABOVE THE APPLIANCE.................................................................................................................. 11
EXTERNAL AIR INTAKE .................................................................................................................................................... 11
THE FLUE PIPE AND CONNECTION TO THE SAME ............................................................................................................... 13
CHIMNEY ....................................................................................................................................................................... 14
ELECTRICAL CONNECTION .......................................................................................................................................... 15
CONTROL OF ANY COUPLED BOILER ................................................................................................................................ 15
CONTROL OF A POSSIBLE THREE-WAY MOTORISED VALVE FOR THE DHW SYSTEM (ON PREPARED MODELS ONLY).............. 16
CONNECTION TO THE ROOM THERMOSTAT....................................................................................................................... 17
HYDRAULIC CONNECTION............................................................................................................................................ 17
THE DISPLAY .................................................................................................................................................................. 18
THE MENU ....................................................................................................................................................................... 20
INITIAL START-UP .......................................................................................................................................................... 24
FILLING THE SYSTEM FOR THE FIRST TIME........................................................................................................................ 24
PELLET LOADING AND CONNECTION TO THE MAINS POWER SUPPLY................................................................................... 25
IGNITION CYCLE.............................................................................................................................................................. 25
WORKING MODE............................................................................................................................................................. 26
SWITCH-OFF CYCLE........................................................................................................................................................ 26
CHANGING THE ROOM AND WATER TEMPERATURE ........................................................................................................... 26
PROBLEMS, ALARMS, USEFUL ADVICES ................................................................................................................... 27
USEFUL INFO….............................................................................................................................................................. 27
WHAT HAPPENS IF…...................................................................................................................................................... 28
ALARM SIGNALS ............................................................................................................................................................. 29
CLEANING AND MAINTENANCE ................................................................................................................................... 29
PRECAUTIONS BEFORE CLEANING ................................................................................................................................... 29
ROUTINE CLEANING........................................................................................................................................................ 29
NON-ROUTINE CLEANING ................................................................................................................................................ 30
MONTHLY CLEANING....................................................................................................................................................... 32
CLEANING THE CERAMIC GLASS ...................................................................................................................................... 33
CLEANING THE FLUE PIPE ............................................................................................................................................... 33
MAINTENANCE ............................................................................................................................................................... 33
PCB PARAMETERS ........................................................................................................................................................ 34
WIRING DIAGRAM........................................................................................................................................................... 36
WARRANTY CONDITIONS.............................................................................................................................................. 37

PELLET INSERT STOVE PELLET FIRE PLACE 22
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Dear Customer,
First of all we would like to thank you for choosing a “KLOVER” product and we hope you will be satisfied with this
product.
Please read the warranty certificate carefully. This is found on the last page of this User Guide. Please contact the
authorised Technical Assistance Centre (TAC) for the initial start-up of your stove and to validate the warranty.
We would like to thank you again for trusting KLOVER products, and we would also like inform you that these models
are the result of forty years of experience in the manufacture of solid fuel products using water as heat transfer fluid.
Every single detail of the product is manufactured by qualified staff, using the most advanced equipment.
The manual contains a detailed description of the appliance and its operation, instructions for proper installation, basic
maintenance and control points, which must be periodically performed; furthermore it contains practical advice which
helps to obtain maximum performance from the appliance with minimum fuel consumption.
Stay warm with KLOVER!
Technical Support
Klover pellet appliance is are imported and distributed by FirePower Heating, Dunkeswell, Dunkeswell Business Park,
Honiton, EX14 4RD.
UK technical and product support is provided by FirePower Heating who can be reached on 0844 3320156.
Certificate number : KIWA 00007/037 B - KIWA 00007/038 B
Copyright
All rights reserved. The reproduction of any part of this manual, in any form, without the explicit written permission of
KLOVER Srl is forbidden. The content of this manual may be modified without notice. Although the documentation
contained in this manual has been carefully compiled and checked, KLOVER srl cannot be held liable for any damages
arising from the use of the same.
Copyright © 2016 KLOVER srl

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INTRODUCTION
Important safety instructions
Please read these instructions before installing and using the product.
-The installation and initial start-up of the appliance must be performed by skilled personnel trained in the relevant
safety standards. They will be responsible for the definitive installation of the appliance and its proper operation.
KLOVER srl shall not be held liable if these precautions are not observed.
-During installation of the appliance, all local regulations - including those referring to national and European
Standards - must be observed.
-Connect the flue gas outlet to a flue with the specifications described in the “Flue and its connection” section of this
User guide.
-The appliance is not suitable for installation on a shared flue system.
-If the flue should catch fire, use appropriate fire extinguishing equipment or call the fire brigade.
-Connect the product to an earthed power socket. Avoid using sockets controlled by switches or automatic timers.
-Do not use the power supply cable if damaged or worn.
-If a multiple socket is used, make sure that the total voltage of the connected devices does not exceed the rated
voltage for the socket. Also make sure that the total voltage of all the devices connected to the socket does not
exceed the maximum permitted level.
-Do not use flammable substances to clean the appliance or its parts.
-Do not leave flammable containers and substances in the place where the appliance is installed.
-The appliance works exclusively with wood pellets and only with the hearth door shut.
-NEVER open the door of the appliance during normal operation.
-The use of poor quality pellets or any other material can damage the appliance operation, voiding the warranty and
exempting the manufacturer from all liability.
-Do not use the appliance as an incinerator or for any use other than that for which it was designed.
-Do not use fuels other than those recommended.
-Do not use liquid fuels.
-The appliance, and its outer surfaces in particular, become very hot to the touch during operation; handle with
caution in order to avoid burns.
-Only use original spare parts recommended by the manufacturer.
-Do not make any unauthorised modifications to the appliance.
-Do not touch the hot components of the product (ceramic glass, flue pipe) during normal operation.
-Never touch the appliance if you are barefoot and/or if you have wet or damp parts of the body.
-Use the appropriate button to switch off the electrical panel. Do not disconnect the power supply cable while the
appliance is operating.
-During the ignition phase and normal operation of the appliance, maintain the necessary safety distance and do not
remain standing in front of it.
-Keep children away from the appliance when it is running since they could get burned by touching its hot
components.
-Do not leave the packaging elements within reach of children or unassisted disabled persons.
-Children and inexperienced people must not be allowed to use the appliance.
-Do not use the appliance in ways other than those indicated in this user guide.
-The appliance is designed for indoor use only.
-This user guide constitutes an integral part of the appliance. If the product is sold to another user, this manual must
be passed on to the new owner.
-The Klover pellet products are not suitable for use in smokeless zones.
KLOVER S.R.L. DECLINES ALL LIABILITY IN CASE OF ACCIDENTS DUE TO FAILURE TO COMPLY WITH THE
SPECIFICATIONS OF THIS MANUAL.
KLOVER S.R.L. DECLINES ALL LIABILITY DUE TO INCORRECT USE OF THE PRODUCT BY THE USER,
UNAUTHORISED MODIFICATION AND/OR REPAIRS, AND USE OF NON-ORIGINAL SPARE PARTS OR SPARE
PARTS NOT SPECIFICALLY DESIGNED FOR USE ON THIS PRODUCT MODEL.
KLOVER S.R.L. SHALL NOT BE HELD LIABLE FOR THE STOVE'S INSTALLATION. THE INSTALLER IS THE
SOLE PARTY RESPONSIBLE FOR THIS OPERATION AND IS ALSO ENTRUSTED WITH CHECKING THE FLUE,
EXTERNAL AIR VENT AND THE CORRECTNESS OF THE PROPOSED INSTALLATION SOLUTIONS. ALL THE

PELLET INSERT STOVE PELLET FIRE PLACE 22
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SAFETY REGULATIONS SET OUT IN THE SPECIFIC LAWS IN FORCE IN THE COUNTRY OF THE STOVE'S
INSTALLATION MUST BE OBSERVED.
NON-ROUTINE MAINTENANCE MUST ONLY BE PERFORMED BY AUTHORISED AND QUALIFIED STAFF.
To ensure the validity of the warranty, the user must comply with the instructions contained in this guide and, in
particular, must:
-Use the appliance within its operating limits;
-Regularly perform all maintenance activities;
-Authorise expert and competent people to use the appliance.
Failure to comply with the instructions contained in this guide shall automatically void the warranty.
Installation Regulations
These operating and instructions cover the basic principles to ensure the correct installation of the pellet appliance,
although particulars may need modification to reflect local site conditions. In all cases the installation must comply with
current Building Regulations, Local Authority By-laws and other regulations that affect the installation of the appliance.
The Building Regulations requirements can be met by adopting the relevant recommendations given in British Standards
BS 8303, BS 6461 and BS 7566 as an alternative means to achieve an equivalent level of performance to that obtained
by following the guidance given in Approved Document J.
Health and Safety
Care must be taken when installing a Klover pellet appliance to ensure that the requirements of the Health and Safety at
Work Act are met.
Handling Adequate facilities must be available for loading, unloading and site handling the appliance bearing in mind the
weight of the appliance.
THE MACHINE AND THE PELLETS
Components of the appliance
The table below shows the standard features of the appliance:
Expansion tank
6 l
Safety valve
2.5 bar
Pressure gauge
0 –4 bar
Check valve
Yes
Automatic air vent valve
Yes
Heating system pump
Yes. Mod.25/70
System load connection with cock
Yes
DHW heat exchanger
On prepared models only
The appliance is delivered with the following equipment:
-No. 1 user, installation and maintenance guide;
-No. 2 3/4" flexible hoses with length of 1 mt;
-No. 1 1/2" flexible hose with length of 1 mt; (No. 2 1/2" flexible hoses with length of 1 mt in DHW model);
-No. 1 power supply cable;
-No. 1 swab D.40-170 mm L.420 mm.
Safety thermostat with
manual reset.
Hand wheel for
insert attachment.
Door closed
micro switch.
Main switch.
FRONTAL TECHNICAL COMPARTMENT

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EN - Rev. 2.1
LEFT SIDE TECHNICAL COMPARTMENT
Flue gas outlet.
Anti-interference
filter
connection for power
supply cable with 2
built-in fuses (4A
250V).
Terminal for room
thermostat
connection.
RIGHT SIDE TECHNICAL COMPARTMENT
Manometer
(indicates the
pressure of the
heating system).
Delivery pipe
connection of the
heating system
with check valve.
Expansion tank
6 l with pre-load
1 bar.
Return pipe
connection of the
heating system.
Safety valve
calibrated 2.5 bar.
Rubinetto di scarico
Boiler body and
system drain cock.
System load
connection with cock.
Automatic air
vent valve
(Jolly).
Domestic cold water inlet
pipe connection (on
prepared models only) +
system load and boiler
body.
Domestic hot water
outlet pipe
connection (on
prepared models only).

PELLET INSERT STOVE PELLET FIRE PLACE 22
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Overall dimensions
Adjustable
feet
350 to 450

PELLET INSERT STOVE PELLET FIRE PLACE 22
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EN - Rev. 2.1
Connections data sheet
Description of connections
M= System delivery (measures hose connections supplied)
3/4" M
R= System return (measures hose connections supplied)
3/4" M
F =Domestic cold water inlet + system load and boiler body (on prepared models only) (measures
hose connections supplied)
1/2" M
K= System load and boiler body (only DHW model) (measures hose connections supplied)
1/2" M
C = Domestic hot water outlet (on prepared models only) (measures hose connections supplied)
1/2" M
m = System delivery
1" M
r = System return
1" M
f = Domestic cold water inlet + system load and boiler body (on prepared models only)
1/2" M
k = System load and boiler body (only DHW model)
1/2" M
c = Domestic hot water outlet (on prepared models only)
1/2" M
X= Safety valve drain
1/2" F
A = Intake pipe
50 mm
S= Flue gas outlet
100 mm M
E =Electricity connection
REAR VIEW
WALL SET-UP

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Technical Specifications
Nominal heat input
kW (Kcal/h)
22,2 (19.100)
Reduced thermal capacity
kW (Kcal/h)
6,6 (5.700)
Nominal thermal output
kW (Kcal/h)
20,1 (17.300)
Reduced thermal power
kW (Kcal/h)
6,3 (5.400)
Nominal power released to heating water
kW (Kcal/h)
18,3 (15.700)
Reduced power released to heating water
kW (Kcal/h)
5,6 (4.800)
Nominal power delivered to room due to radiation
kW (Kcal/h)
1,8 (1.600)
Reduced power delivered to room due to radiation
kW (Kcal/h)
0,7 (600)
Efficiency at thermal nominal power
%
90,2
Efficiency at reduced thermal power
%
95,9
CO at 13% oxygen at nominal thermal power
%
0,011
CO at 13% oxygen at reduced thermal power
%
0,009
Power consumption min - max
Watt
25 –300*
Nominal voltage
V
220
Nominal frequency
Hz
50
Expansion vessel litres/preloading bar
6 / 1
Maximum operating/recommended pressure
bar
2,5 / 1,5
Flue pipe diameter
mm
100
Air intake pipe diameter
mm
50
Minimum chimney draught at nominal thermal power
Pa
13,8
Minimum chimney draught at reduced power
Pa
13,8
Combustion gas mass at nominal thermal power
g/s
13,9
Combustion gas mass at reduced power
g/s
5,7
Pellet tank capacity
Kg
62
Average exhaust flue gas temperature at nominal thermal power
°C
155,5
Average exhaust flue gas temperature at reduced power
°C
70,7
Boiler body capacity
litres
34
Width
mm
865
Height
mm
870
Depth
mm
770
Minimum safety distance from flammable materials
mm
200
Weight
Kg
250
* Power consumption only during the ignition cycle.
The appliance's heat output may vary depending on the type of pellets used.

PELLET INSERT STOVE PELLET FIRE PLACE 22
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Pellet properties
The appliance has been tested with all types of pellets available on the market. The pellets must have the following
properties:
-Diameter 6 mm.
-Maximum length 35 mm.
-Maximum humidity content 8 –9 %.
-100% wood. Totally additive-free.
-Maximum ash residue 1.1 %.
To obtain good performance from the appliance, we recommend using good quality pellets. Pellets should be poured
into the tank using a shovel, and not directly from the bag.
Good quality pellets should have the following properties:
-Constant diameter cylinders with a smooth, shiny surface;
-There should not be a lot of sawdust inside the packaging;
-After grabbing a bunch of pellets and placing them into a container filled with water, good-quality pellets will sink and
poor-quality ones will tend to float;
-The quality certification data, in particular conformity to international standards such as EN14961-2, DIN 51731 and
O-NORM M7135, should be indicated on the packaging;
-The packages should be intact since pellets tend to absorb humidity. Humidity not only reduces the calorific value
and increases the amount of flue gases expelled, but also causes swelling of the product which may create problems
with the appliance.
The production of pellets must be compliant with some international standards (such as EN14961-2, DIN 51731 and O-
NORM M7135) which establish minimum values for quality checks on pellets. To facilitate the right choice of the
combustible material you can find below one of the most common certification marks identifying the quality of the pellets:
The use of poor quality pellets or any other material can damage the appliance operation, voiding the warranty
and exempting the manufacturer from all liability.
In order to guarantee trouble-free combustion, the pellets must be stored in a dry place.
REQUIREMENTS OF THE PLACE OF INSTALLATION
Positioning
The initial phase for best installation of the appliance is to determine its optimum location; the following elements need to
be considered:
-The possibility of creating an external air vent;
-The possibility of creating a straight flue, preferably coaxial to the outlet of the appliance;
-Proximity to the main water drain and/or the boiler (if one already exists);
-Proximity or ease of connection to the water system;
-Ease of access for cleaning the appliance, the flue gas exhaust pipes and the flue.
Indication of the standard,
base reference for the quality
classes ENplus
Indication of the quality
class of the certified pellet
(preferable A1)
IT xxx
Code of the certified company
consisting of two elements:
-Symbol of the country of
production (example “IT”)
-Progressive number assigned at
the acquisition of the
certification (example "xxx")

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EN - Rev. 2.1
The unit must be installed on a floor with a suitable load capacity. If the existing building does not fulfil this requirement
appropriate measures (e.g. load distribution plate) must be taken.
The minimum safety distance from flammable materials must be at least 200 mm from the sides and back of the
appliance.
Relocating the appliance should not be done by forcing on the handle, glass or ceramics.
The installation must guarantee easy access for cleaning the appliance, the flue gas exhaust pipes and the flue, and any
subsequent maintenance operation by the Authorised technical assistance centre.
Once you have found the best location for the appliance, position it following the instructions given below.
IF THE INSERT IS INSTALLED IN A TRADITIONAL HEARTH, ALREADY EXISTING, POSITION IT AS FOLLOWS:
1. Check that the support surface has the features indicated below:
-it must be able to support the weight of the insert and any accessories.
-It must have consistency such to allow anchorage using plugs, in maximum safety. If this is not the case, it is
indispensable to make a new floor in reinforced cement with metal mesh over the previously-cleaned fire surface.
-It must be perfectly level
-The embrasures must be as perpendicular tot he surface as possible.
2. Check that the housing compartment is big enough to hold the insert.
After having checked the conditions necessary for correct installation, proceed with assembly:
3. House the insert with the base in the heart compartment and, once the correct position has been decided, make the
holes for anchorage of the base to the surface.
4. Block the insert base using the relative expansion plugs. This operation must be performed with great care in
order to prevent the structure tipping during extraction of the insert.
5. Make the hydraulic and electrical connection and also connect the flue with respect to the Standards in force.
N.B.: during the hydraulic and electrical connection it is IMPORTANT to check that the flexible hoses and the
electric cable has an extension that allows the complete travel of the insert guides, towards the outside of the
hearth.
IF THE INSERT IS INSTALLED AS "NEW SYSTEM", POSITION AS FOLLOWS:
1. Check that the support frame support surface has the features indicated below:
-it must be able to support the weight of the insert and any accessories.
-It must have consistency such to allow anchorage using plugs, in maximum safety. If this is not the case, it is
indispensable to make a new floor in reinforced cement with metal mesh.
-It must be perfectly level.
2. Rest the support frame at the wall and anchor it using the relevant expansion plugs.
This operation must be performed with great care in order to prevent the structure tipping during extraction of
the insert.
3. Make the hydraulic and electrical connection and also connect the flue with respect to the Standards in force.
N.B.: during the hydraulic and electrical connection it is IMPORTANT to check that the flexible hoses and the
electric cable has an extension that allows the complete travel of the insert guides, towards the outside of the
hearth.
4. Assemble the external covering.
Do not cover the insert for at least 6-7 days, in order to verify the tightness of all hydraulic joints of the insert
itself.

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EN - Rev. 2.1
Spaces around and above the appliance
The figure below indicates the minimum measurements to be respected when positioning the insert with respect to the
walls and/or the two "covering" embrasures (if the latter cannot be easily removed).
9 cm
4 cm
9 cm
The space existing between the walls of the insert and the hearth compartment can be closed via a compensation frame
that must be easily removable if maintenance is to be performed on the insert.
It is recommended to make lateral or rear inspections for any maintenance.
Furniture and movable objects must be positioned at least 15 cm from the side surfaces of the appliance; these objects
must be moved when performing maintenance on the appliance.
Protect all structures that can catch fire against the radiated heat of the fire.
Any extra intervention by the Authorised technical assistance centre, where it is necessary to disconnect the
device from the system, will not be recognised under warranty as described in chapter “Warranty Conditions”.
External air intake
During operation, the appliance takes in air from the environment in which it is installed; It is therefore essential that this
air is replaced through an external air vent. The absence of the air vent may affect the flue draught and therefore the
combustion and the safety of the appliance.
Therefore it is mandatory to install an external air vent with a minimum completely free passage of at least 80 cm2
(round hole with minimum diameter of 15 cm protected with a special fixed large mesh grid).
If the wall behind the appliance is on the outside, we recommend you make the hole near it at about 10 cm above the
ground (see example in Fig. 1).

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EN - Rev. 2.1
AIR VENT
DIAMETER 150mm
PARETE POSTERIORE
Fig. 1
REAR WALL
If it is not possible to put an air vent in the wall behind the appliance, make a hole in a perimeter wall in the room where it
is installed and another hole in the covering (see example in Fig. 2). If it not possible to put the external air vent in the
same room as where the appliance is installed, this hole can be made in an adjoining room as long as this room
communicates permanently, by means of a transit hole (15 cm minimum diameter).
AIR VENT
DIAMETER 150mm
AIR PASSAGE
DIAMETER 150mm
REAR WALL
Fig. 2
The hole must be protected externally with a fixed grille. The protective grille must be checked periodically to ensure that
it is not obstructed, thereby impeding the passage of air. Therefore keep the air vents clear of obstructions.

PELLET INSERT STOVE PELLET FIRE PLACE 22
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The UNI 10683 Standard FORBIDS the drawing of combustion air from garages, warehouses storing combustible
materials, or from business premises with a fire hazard.
Do not connect the external air vent directly to the appliance through piping. If there are other heating or extraction
devices inside the room, the air vents must guarantee a sufficient amount of air for properly operating all the devices.
Only sealed appliances (e.g. C type gas appliances, according to the UNI 7129 Standard) or appliances that do not
cause a lower pressure compared with the external environment can pre-exist or be installed in the place where the
appliance is installed.
Extractor fans can cause malfunctions to the appliance if used in the same room.
The flue pipe and connection to the same
The flue pipe is an essential element for the efficient operation of the appliance. The flue must have a minimum cross-
sectional area as that indicated in the technical specifications of the appliance (120 mm). Each product must be
equipped with its own flue, without other adjoining elements (boilers, chimneys, stoves etc.). The flue dimensions are
closely related to its height, which must be measured from the appliance flue gas outlet to the base of the stack. In order
to guarantee adequate draught, the chimney stack flue outlet surface must be twice as big as the flue pipe cross-section.
The discharge pipe for combustion products generated by the forced draught device, must comply with the following
requirements:
-It must seal off the combustion gases, as well as being waterproof and suitably isolated and insulated in relation to
the conditions of use (refer to UNI 9615);
-It must be made of suitable materials capable of withstanding normal mechanical stress, heat, and the effects of
combustion gases and condensate, if any;
-It must go upwards after the vertical section, for the entire remaining part, with a minimum gradient of 5%; The sub-
horizontal section must not have a length greater than ¼ of the effective height H of the flue or chimney, and must
not be longer than 2,000 mm;
-It must preferably have a round internal cross-section: square or rectangular cross-sections must have rounded
corners with radius not inferior to 20 mm;
-It must have a constant, free and independent internal cross section;
-Rectangular cross-sections must have a maximum ratio of 1.5 between the sides;
-If the flue pipe is installed on the outside it is essential that it is insulated in order to avoid the flue gas
cooling allowing condensation to form;
-Parts made from non-combustible materials (it is absolutely prohibited the use of aluminium flue pipe) - capable
of withstanding combustion gases and potential condensation - must be used for mounting the flue gas pipes (for the
section from the appliance to the flue inlet);
-It is forbidden to use fibre cement pipes to connect the appliance to the flue;
-Flue pipes must not pass through rooms in which the installation of combustion devices is prohibited;
-The flue pipes must be assembled in such a way as to guarantee adequate sealing of flue gases during low pressure
operation of the appliance;
-The installation of horizontal sections is prohibited;
-It is prohibited to use counter sloping elements;
-The flue gas pipe must allow for the recovery of soot or be cleanable, and must have a constant cross-section;
-It is forbidden to allow other air intake conduits and system pipes to transit inside the flue gas pipes, even if they are
over-sized.
FURTHER SPECIFICATIONS TO BE CONSIDERED
-The appliance works with the combustion chamber in depression and the flue pipe in pressure; it is essential that
the flue gas outlet is hermetically sealed.
-The flue pipes inside the installation room must be made of a suitable material (see current regulations) and
equipped with seal gaskets with a minimum diameter of 100 mm.
-The pipes must have a double wall (thermally insulated) or be suitably insulated with rock wool. The
maximum temperature of the flue pipe inside the room must not exceed 70°C.
-IT IS MANDATORY TO HAVE AN INITIAL VERTICAL SECTION OF AT LEAST 1.5 MT IN ORDER TO
GUARANTEE CORRECT FLUE GAS DISCHARGE.

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EN - Rev. 2.1
-Every direction change must be carried out with a T-shaped fitting and inspection cap. The tubes must be air tight
through special seals which resist up to 250° C. Attach the pipes to the wall with special collars to avoid any
vibration.
-IT IS STRICTLY FORBIDDEN TO INSTALL DRAUGHT REGULATION VALVES (BUTTERFLY VALVES).
O100 mm
ISPECTION
MINIMUM 1,5 m
MAXIMUM 2 m
MAX. GRADIENT 5%
O120 mm
ISPECTION
ISPECTION
If the flue should be old or too big (internal diameter greater than 15 cm), duct the flue using a stainless steel pipe,
properly insulated with rock wool or vermiculite, and sized according to the route. The connection to the flue must be
appropriately sealed.
When assembling the flue, there must be no more than 4 direction changes, including the initial T-shaped
fitting.
Chimney
The chimney is a device crowning the flue, used to ease dispersion of combustion products.
It must satisfy the following requirements:
-It must have a usable outlet cross-section no less than double that of the flue onto which it is inserted;
-In must be shaped in such a way as to prevent rainwater or snow from seeping into the flue;
-It must be built in such a way as to ensure the discharge of combustion by-products even in the event of winds from
every direction and inclination.
The outlet height (where height refers to the top of the flue, regardless of any chimney stacks) must be outside of the so-
called reflux zone, in order to prevent the formation of counter-pressures preventing the free discharge of combustion
by-products into the atmosphere.
It is therefore necessary that the minimum heights - indicated in the following diagrams - are observed:

PELLET INSERT STOVE PELLET FIRE PLACE 22
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EN - Rev. 2.1
ELECTRICAL CONNECTION
The electric connection must only be performed by qualified staff, in compliance with all general and local safety
standards.
Check that the power supply voltage and frequency correspond to 220V –50 Hz.
The appliance's safety is ensured when it is properly connected to an efficient earthing system.
In the electric connection to the mains power supply, include a 6 A –Id 30 mA differential trip-switch with suitable
breaking load. The electric connections, including the earth connection, must be made after shutting off the electrical
system.
When completing the system, bear in mind that the cables must be laid in an unmovable manner and far from parts
subject to high temperatures. During the final wiring of the circuit, only use components with a suitable electrical
protection rating. Do not pass electric cables in the immediate vicinity of the flue gas pipe, unless they are insulated with
suitable materials.
KLOVER srl declines all responsibility for injury to persons and animals or damage to objects due to failure to
connect the appliance to earth or to comply with IEC specifications.
Control of any coupled boiler
If the pellet appliance is to be coupled with a previously installed boiler in the system (e.g. wall-hung gas boiler), you
must ensure that the standard boiler stops when the pellet appliance takes over the heating of the system. The electrical
setting, which is accessible from the rear technical compartment, intervenes on the standard boiler when the heating
circulating pump of the pellet appliance starts up so as to avoid having two boilers operating simultaneously on the same
system. The coupled boiler is however always available for the production of domestic hot water.
The two wires prepared on the back of the appliance (blue and brown wires) will have an output voltage of 220 V
when the pellet appliance pump is working, and no voltage when the pump stops.
It is therefore necessary to connect the 2 wires to a relay that will control the Room Thermostat (R.T.) input of the
coupled boiler (see the following example).

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EN - Rev. 2.1
Control of a possible three-way motorised valve for the DHW system (on prepared models only)
The pellet appliance is equipped as standard with a control for a possible 3-way motorised valve to be installed on the
domestic water circuit (for prepared models only). In the rear technical compartment of the appliance there are four wires
with fastons protected by a red seal, which can be used for controlling the valve (see also “wiring diagram”). The four
wires have different colours, and precisely:
-Blue wire = 3-WAY VALVE COMMON
-Black wire = PELLET APPLIANCE SANITARY SIDE
-Brown wire = GAS BOILER SANITARY SIDE
-Yellow/green wire = GND
Below there is an example of a connection using a 3-way valve with spring return. Remember that the hydraulic
connection must be made in such a way that when the valve is at rest, the water passes from the gas boiler. Only when
the appliance temperature is sufficient (see “Menu 5 – 3 Way Threshol”), the three-way valve is powered, closing the gas
boiler water circuit and opening the water circuit of the appliance.
N.B.: in the example above, the brown wire can be used to control a service relay.

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EN - Rev. 2.1
Connection to the room thermostat
On the back of the appliance there is a bridged terminal which is used to connect the environment thermostat that will
command the operation.
OPERATING PRINCIPLE
Open contact:
-The appliance switches directly to economy mode operation “T-OFF ECONOMY”
thus minimising its operating power.
-The heating circulating pump of the appliance switches off.
-The temperature in the boiler increases due to thermal inertia until it reaches the
temperature set with “SET H2O” and displays “T-H2O ECONOMY” on its monitor.
-The appliance now switches itself off automatically if at least one of the following
conditions occurs:
-If it remains in Economy mode Operation “T-H2O ECONOMY” for a time set
on Pr44 (30 minutes as default setting).
-If it exceeds the temperature differential set on Pr43 (set as default at 5°C),
in other words if Temperature H2O > (“SET H2O” + Pr43).
-The appliance will switch on again automatically if both of the following conditions
occur:
-The contact of the room thermostat closes.
-The temperature falls below the temperature differential set on Pr43 (set as
default at 5°C), in other words H2O Temperature < (“SET H2O” –Pr43).
If the above condition occurs during the switch-off cycle, please wait until the cycle is complete.
N.B.: If the water temperature exceeds the threshold set on Pr50 (set as default at 83°C), the circulating pump of the
system is forcedly switched-on to ensure the disposal of excessive heat, thus avoiding the reaching of high temperatures
of the water in the boiler. For this reason it is recommended that the heating system is not entirely closed.
WARNING: If the room sensor in the “Remote Control” is also enabled (see “Menu 04 – Enable Contact”)the appliance
enters the economy mode when both instances are satisfied.
HYDRAULIC CONNECTION
The plumbing connections must be made in a rational way using the connections on the template of the appliance. To
facilitate the connection of the pipes, all the plumbing connections have been fitted on the rear side, leaving space to
make the appropriate connections.
The appliance can be coupled with any other boiler already installed on the system. In this case it is essential to fit all the
necessary safety devices and shut-off valves based on the system and intended use. It is also necessary to consider all
laws and national, regional, provincial and municipal regulations of the country where the appliance is installed.
N.B.: The appliance can be installed with the expansion vessel closed because it is equipped with a device for
stopping fuel loading, a safety manual reset thermostat and an audible alarm, which are activated if the
temperature goes too high.
You can install the appliance in the same room as another boiler only if this has a sealed chamber; installation
must be performed in compliance with the current regulations.
The maximum mains water pressure should never exceed 3 bar; recommended operating pressure: 1.5 bar
(during operation).