Lohberger Heiztechnik thermocomfort PNA 15 User manual

Technical documentation
Assembly and
installation instructions
Version N28/HB N28/GB
Fully automatic pellet heater
4,4 –30 kW nominal output
Thank you for choosing our products. Before installing and
starting to use your system please read through all of the
instructions, as well as the assembly, installation and user
guides for the .
Doing this will ensure you avoid any unnecessary damage
caused by improper installation or operation.
Your Lohberger Heiztechnik GmbH

Assembly- and Installation
Instructions
Lohberger Heiztechnik
GmbH
N28/HB N28/GB
Seite 2
Lohberger Heiztechnik GmbH, A-5020 Salzburg-Bergheim, Rechtes Salzachufer 40 Tel. [phone], Fax-DW 9
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CONTENTS:
1Important information before installation and commissioning............................................................... 3
2Scope of delivery .................................................................................................................................... 5
2.1 Transport/unpacking/inspection .............................................................................................................. 5
3Technical data......................................................................................................................................... 6
3.1 TDA components................................................................................................................................... 8
4Installation variants in the heating room ............................................................................................... 9
4.1 Minimum space requirements for a hopper system.................................................................................... 9
4.2 Minimum space requirements for Vario screw conveyor system .................................................................10
5Instructions for boiler installation ........................................................................................................ 11
5.1 Unhinge door & pulling out ash pan........................................................................................................11
5.2 Lifting the boiler off the pallet/transport cross-tie ....................................................................................11
5.3 Documentation on ash-door plate / transport-damage information.............................................................11
6Assembling the components incl. fitting of cables ................................................................................ 12
6.1 Assembly induced draught fan & lambda probe & heat exchange motor .....................................................12
6.2 Assembling the primary (PAF) and secondary air flap (SAF) & Ignition .......................................................13
6.3 Assembling FT - Probe..........................................................................................................................13
6.4 Assembling door contact switch (DCS) and grate-magnet connection .........................................................13
6.5 Assembling Safety Temperature Limiter (STL) & Boiler Probe & Control Board Cable....................................14
6.6 Assembling I/O-circuit board & cable connection......................................................................................14
6.7 Fitting relay box for screw conveyor system & cabeling ......................................................16
6.8 Assembly cable connection at pellet insertion ..........................................................................................16
6.9 Backfitting of pellet insertion from the right side to the left .......................................................................17
7Fitting of the casing elements incl. control unit.................................................................................... 19
7.1 Insert rear panel..................................................................................................................................19
7.2 Fitting left-hand side panel....................................................................................................................19
7.3 Fitting right-hand side panel..................................................................................................................19
7.4 Fitting of control units ..........................................................................................................................20
7.5 Fitting front cover ................................................................................................................................20
7.6 Fitting of rear cover .............................................................................................................................21
7.7 Fitting of front boiler cover....................................................................................................................21
8Device interfaces/connectivity ............................................................................................................. 22
8.1 Electrical connection.............................................................................................................................22
8.2 Fuse/emergency heating switch .............................................................................................................22
8.3 Main control unit connector assignment ..................................................................................................23
8.4 Electrical connections for primary and secondary air flap ..........................................................................24
8.5 Electrical connection for flame sensor, STL, lambda probe with transformer, draught fan, boiler sensor .........25
8.6 Electrical connection for discharge system..............................................................................26
8.7 Electrical connection extension 1 for I/O-board TC3 .................................................................................27
8.8 Electrical connecting bus modules heating circuit 3 & 4 or 5 & 6 or solar module and digital room unit for TC328
8.9 Examples for a bus system ...................................................................................................................33
9Connection to the chimney ................................................................................................................... 37
10 Hydraulic connection ............................................................................................................................ 38
10.1 Return riser (mandatory) ......................................................................................................................38
10.2 Hydraulic connection ............................................................................................................................38
10.3 Hydraulic diagrams ..............................................................................................................................39
11 Installing the discharge system............................................................................................................ 40
11.1 Pellet hopper incl. insertion ...................................................................................................................40
11.2 3+3 (4+4) screw conveyor system................................................................................................41
11.3 vacuum conveyor system for basement units PN/TDA ........................................................41
12 The most important points at a glance ................................................................................................. 42
13 Customer services................................................................................................................................. 43
14 Your specialist dealer ........................................................................................................................... 43

Assembly- and Installation
Instructions
Lohberger Heiztechnik
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N28/HB N28/GB
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Lohberger Heiztechnik GmbH, A-5020 Salzburg-Bergheim, Rechtes Salzachufer 40 Tel. [phone], Fax-DW 9
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1Important information before installation and commissioning
This documentation should be read carefully before installing and commissioning
the heating system. In the event of any confusion please contact the technical support
department of "Lohberger Heiztechnik" (Tel. [phone]).
"PROFESSIONAL INSTALLATION & COMMISSIONING":
Correct operation of the boiler / system is only ensured if it is installed by a trained and qualified specialist (licensed
plumber or heating engineer) in accordance with recognised industry standards. The entire electrical installation
should be installed by a licensed company. VDE, ÖVE and other relevant regulations and standards are to be adhered to.
The initial commissioning process can be implemented by authorised customer service departments or Lohberger Heiz-
technik partners and is conducted upon request. Before the boiler is operated by a specialist for the first time the opera-
tor of the system must ensure it is ready for use (i.e. electrical wiring, hydraulic connections, suitable chimney, suitable
heat dissipation and appropriate fuel).
"CORRECT OPERATION":
Please note that the boiler / system has not been designed to be child-proof (doors, etc.) and it should therefore not be
operated by children or any unauthorised or untrained persons. Training is provided by your specialised technician (in-
staller, authorised service department or Lohberger Heiztechnik service technician) during commissioning or maintenance.
In the event of non-professional installation and commissioning, as well as improper operation contrary to
system-specific requirements (according to technical documentation, operating instructions, etc.), it shall
result in expiration of any warranty or guarantee claim. The use of a return riser, a storage tank and hydrau-
lic adjustment of the overall system are imperative for proper operation. Heat intake must enable a minimum
system running time of 1.5 - 2 hrs per combustion cycle at min. 50% of nominal output.
"FUEL and INSTALLATION":
The heating system should only be operated with the designated fuel (fuel requirements according to the technical docu-
mentation) and in suitable, dry rooms/installation areas. The fuel storage area must also be dry and fulfil the specific fuel
requirements (see storage area configuration). The boiler room/installation area and fuel storage area must comply with
the applicable building and safety regulations (particularly fire and personal safety regulations). The storage area
should only be entered after ensuring sufficient ventilation (also see pellet storage area safety signs) and
making sure the system is switched off and fully disconnected.
"CHIMNEY REQUIREMENTS FOR HEATING SYSTEMS":
When dealing with new or recently renovated chimneys the operator of the heating system is required to present the
commissioned heating contractor or service technician, without being requested, a valid inspection certificate from
the responsible chimney sweep prior to the (initial) commissioning phase in order to demonstrate the suitability and
operational readiness of the chimney. The chimney is to be made freely accessible by the operator (no covers or obstruc-
tions). Good ventilation (sufficient supply of fresh air) in the boiler room/installation area is to be ensured. Reference
should be made to any existing defects and/or changes to the chimney and heating system. If possible, the relevant
chimney sweep should also be in attendance for the initial commissioning phase of the heating system. Due to lower flue
gas temperatures in the transitional period the chimney should be constructed in a moisture-resistant and leak-proof
manner. Smoke and/or flue gases must be channelled unhindered into the open air.
"PERIODIC CLEANING AND MAINTENANCE OF THE SYSTEM":
All heating systems, i.e. fireplaces, including all of the associated components (e.g. chimney, conveyor system, safety
systems, etc.) must be subjected to periodic maintenance and cleaning procedures in order to ensure their functionality
and operating efficiency. Please refer to the cleaning and maintenance instructions in this manual. "Lohberger Heiz-
technik" and Lohberger Heiztechnik partner companies offer their customers a comprehensive service / mainte-
nance contract and would be happy to undertake this important task. Further information is available from our sales
staff and customer service representatives. Your local chimney sweep will be happy to clean the fireplace. Only a clean
and correctly adjusted boiler is an economical boiler. A lining of just 1 mm on the surfaces of the heat exchanger increas-
es fuel consumption by approx. 7%.
Further information is available from our sales staff and customer service representatives.
OBSERVE THE CORRECT "ASSEMBLY SEQUENCE":
Observe the correct assembly sequence in this manual. The insulating jacket (metal cladding including insulation) should
be assembled before the water-side connection is established! Before commissioning the heating system it should be filled
with heat transfer fluid in accordance with the relevant standards and a suitable operating pressure established in the
distribution pipes.
OBSERVE THE "GENERAL SAFETY REGULATIONS":
Ensure compliance with the applicable laws and standards, as well as compliance with local fire and building safety regu-
lations, the heating systems ordinance and all related safety requirements for heating equipment, boiler rooms and fuel
storage areas. Your local installation company, your chimney sweep and your local building authorities would be happy to
provide you with further information.

Assembly- and Installation
Instructions
Lohberger Heiztechnik
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N28/HB N28/GB
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IMPORTANT STANDARDS /DIRECTIVES:
The following standards / directives are to be observed in addition to local fire and
building safety regulations when installing and commissioning the boiler:
ÖNORM M7550: Central heating boilers up to 100 °C: concepts, requirements, inspections,
designation of standards.
ÖNORM M 7510 / 1: Directives for the inspection of central heating systems.
ÖNORM M 7510 / 2: Directives for the inspection of central heating systems; guideline values.
ÖNORM B8130: Safety equipment.
ÖNORM B8131: Closed water-heating systems; safety-related requirements.
ÖNORM B8133: Safety-related requirements for hot water generating systems.
DIN 4751 Part 1: Safety-related equipment for heating systems with flow temperatures up to
110°C (120°C in preparation).
DIN 4751 Part 2: Safety-related equipment for heating systems with flow temperatures up to
110°C (120°C in preparation). Open and closed water heating systems up to
349 kW (300000 kcal/h) with thermostatic fuse.
DIN 4751 Part 4: Safety-related equipment for heat generating systems with flow tempera-
tures up to 120°C; closed water heating system with static levels in excess
of 15 m or nominal heat capacities in excess of 350 kW.
DIN 1988: Potable water conduit systems in properties (technical regulations).
ÖNORM EN 303-5: Heating boiler for solid fuels, manually and automatically fed up to 300 kW.
Concepts, requirements, inspection and designation.
EN 14961-2: European standard for wood pellets.
ÖNORM M7136: Pellets manufactured from natural wood –wood pellets –quality assurance
in transport and storage logistics.
ÖNORM M7137: Pellets manufactured from natural wood –wood pellets –requirements for
the pellet storage area of end customers.
TRVB H118/97: Technical directive for preventive fire protection for automatic wood combus-
tion systems.
DIN EN 12831: Heating system in buildings –Method of calculation of the design heat loa
Type test:
The has been successfully tested by the Technical University of
Vienna according to ÖNORM EN 303-5. Emissions in accordance with Article 15a B-VG concerning
protective measures and the conservation of energy are adhered to.
The original type test certificates are in the possession of "Lohberger Heiztechnik".
Maximum permitted operating pressure: 3.0 bar
Test pressure: 5.0 bar
Permitted flow temperature: 100°C

Assembly- and Installation
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2Scope of delivery
Art.No.
Article designation
Pcs
Boiler (KE)
8B4220
4C4212
8C2410
2H2209
9M1421
9M2421
9M3421
8C4212
8C4214
2H5120
B21007
2x4305
9W0001
9H0070
8C5115
2Y4230
Boiler body PNA
Wiring loom complete TC3 PNA
Induced drought fan with flange
Seal for draught fan 10mm
Installation manual
Assembly instructions
Type plate
Primary air flap, complete
Secondary air flap, complete
Sealing flange 120x120/71x71x3
Cleaning set PN/PNA
Heat resistant glove black
SHT Logo
Shipping bag transparent
Insertion compl. “Ini.” 757 mm auger
Transport bracket 740 x 35
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
Casing (VK)
1K4220
Casing, complete, yellow, PNA
1
Control unit (K1)
8A4230
4P0010
8A4240
4A2216
4A4210
4A4212
9C4210
Thermo-control control panel yellow TC3
Memory SD-card 2 GB
Thermo-control IO circuit board TC3
Immersion sensor without pin
External sensor AF 200
Flow sensor VF 202
Software Version
1
1
1
3
1
2
1
2.1 Transport/unpacking/inspection
Please check your appliance carefully after unpacking for signs of damage and to ensure all parts
have been delivered. Record any visible defects on the delivery note and inform the manufacturer
immediately.

Assembly- and Installation
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3Technical data
PNA rear view (with casing)
PNA right side view (with casing)
PNA front (with casing)
PNA left side view (with casing)

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Model
Nominal rating*
Power range *
Boiler water content
Auxiliary energy mode
Auxiliary energy start
Auxiliary energy stand by
Insertion quantity without
casing
Boiler dimensions
Flue pipe
Acoustic emission
Boiler weight
Minimum draught re- quirement***
Heating surface
Supply and return
Emptying
Depth incl. boil. casing & handle
Depth incl. boil. casing w/o handle
Width incl. boiler casing
Hight incl. boiler casing
Hight of flue pipe
Hight of return
Hight of flow
Hight of emptying
Width
Height
Depth
Ø
G
G
kW
Ltr.
W
mm
mm
mm
dB
kg
Pa
m2
Zoll
PNA 30
30
9-30
ca. 120
45
280
< 8
745 / 775 (with flange)
1495
1050/ 950**
1150
1050
756
1510,5
1309,5
459,5
1259,5
349,5
130
<=42 ***
305 / 415****
0
1,65
1
3/4
PNA 25
25
7,5-28
PNA 20
20
6-20
PNA 15
15
4,5-15
Water-side resistance: approx. 20 mbar
* The type-tested capacity range is to be inferred from the original test certificates and may differ slightly from the values
specified.
** Delivery dimensions without flue pipe fittings; Delivery dimensions without flue pipe fittings and filling door.
*** Acoustic emissions calculated at the Lohberger Heiztechnik test stand.
**** boiler weight (input): Boiler total weight, including all attachments
*****Pressure conversion from Pa to bar
105Pa [N/m²] = 1 bar
Conversion example:
105Pa = 1 bar
100.000 Pa = 1 bar
20 Pa = 0,0002 bar = 0,2 mbar

Assembly- and Installation
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3.1 TDA components
components
Casing
Control unit (circuit
board)
Filling door
Induced draught fan
Autom. heat-
exchange cleaning
Control panel
Pellet combustion
chamber
Ignition element
Pellet insertion channel
Primary air flap
Ash box
Ash pan
Ash pan lever
Control unit/circuit
board
All data is saved on the circuit board. All operational sequences are
coordinated via the control unit/circuit board.
Control panel:
The entire system is operated via the control panel.
Autom. heat-
exchange cleaning:
The automatic heat exchang cleaning cleans the heat exchanger
tubes with cleaning spirals in certain cycles.
Filling door:
The filling door must only be opend for cleaning purposes.
Pellet combustion
chamber:
In the pellet combustion chamber the pellets are burnt.
Pellets insertion
channel:
Serves to supply pellets to the pellets combustion chamber.
Ignition element:
The ignition element ensures automatic ignition of the pel-
lets/logwood.
Primary air flap:
The primary air required for combustion flows through the primary air
flap.
Secondary air flap:
(not visible)
The secondary air required for combustion flows through the second-
ary air flap.
Ash pan:
To get to the ash boxes, the ash pan lever must be in the up position,
then the ash pan can be pulled out with the ash boxes.
Ash box:
All unburnt material is collected in the ash box
Induced draught fan:
Serves to supply air to the boiler.

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4Installation variants in the heating room
The boiler can be installed directly on a non-combustible surface without a foundation. Use the set
screws to adjust the boiler so that it stands evenly or slightly raised to the rear. The boiler should
only be installed in a dry room. Ventilation of the installation room must be ensured. Local regula-
tions and directives are to be adhered to for the heating room.
A minimum room height of 2.10 m is required to remove the cleaning unit!
Warning: A setting up of the boiler in the room interconnection with ventilation systems is not
permitted.
4.1 Minimum space requirements for a hopper system
Please adhere to the following minimum distances:
Heating room floor plan: with hopper
beside the chimney
V=Front
800 mm
R=Wall right
min. 300 mm
unhindered passage must
be possible!!
H=Back
300 mm
W=Wall left
0-100 mm
B1=Width 170 liter hopper
485 mm
B1=Width 120 liter hopper
485 mm
B2=Width of a overall system
with 170 liter hopper
1240 mm
B2= Width of a overall system
with 120 liter hopper
1240 mm
Min. room hight
2000 mm
Heating room floor plan: with hopper in
front of the chimney

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4.2 Minimum space requirements for Vario screw conveyor system
Refer to the separate technical documentation for the Vario screw conveyor system.
Please adhere to the following minimum distances on the boiler side:
Please refer to the VARIO technical documentation for the minimum distances of the VARIO con-
veyor system. In the event of distances overlapping the larger measurement should always be
used.
Heating room floor plan: with Vario
screw conveyor system beside the chimney
V=Front
800 mm
R1 = Wall right
650 mm
R2 = Insertion end
475 mm
H = Back
300 mm
W = Wall left
0-100 mm
Min. room hight
2000 mm
Heating room floor plan: with Vario screw conveyor system in front of the chimney

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5Instructions for boiler installation
5.1 Unhinge door & pulling out ash pan
Before lifting the boiler off the pallet, we recommend unhinging the ash door and pull out the ash
pan. If necessary you can also disassemble the ash pan lever. Please put them down carefully to
avoid any damage
Please do not unscrew the hinges on the boiler side panels as the doors might be-
come misaligned and the alignment to the ash pan can no longer be guaranteed.
Unhinge door
Open ash pan lever
Pull out ash pan
5.2 Lifting the boiler off the pallet/transport cross-tie
There are two possible ways to lift the boiler off the pallet. At least two persons should always lift
the boiler off the pallet.
Lift the boiler off the pallet using a chain fixed to the two eyelets on the lid. (previous re-
moval of the circuit board plate necessary).
Using a lift truck if the ash door has been un-mounted and the fitted transport cross-ties.
For this means, build a ramp (we recommend the use of a 2.5-metre wide sheet of ply-
wood), strengthen the ramp sufficiently with square timber, and line it up flush to the pal-
let. Screw the pallet to the ramp to prevent it from sliding off.
Un-mount ash pan lever
Eyelets on the boiler lid
Remove transport cross-ties
Fitting of transport cross-ties
5.3 Documentation on ash-door plate / transport-damage information
You find the technical documentation attached to the boiler's upper door. Before starting with the
assembly please read the documentation. Additionally, you will find information attached to the
upper door on how to deal with damage caused during transport.

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Documentation on ash-door plate / transport instructions
6Assembling the components incl. fitting of cables
6.1 Assembly induced draught fan & lambda probe & heat exchange motor
Induced draught fan with seal
Place the seal on the induced draught fan as pictured
(labelling visible) and inter-connect the pieces so that
the holes in the seal and in the mounting plate are
aligned.
RInduced draught fan
Mount the induced draught fan on the boiler.
Pay attention to the correct positioning when
installing the fan: The taper on the mounting
plate points towards the flue pipe.
Induced draught fan &
Lambda probe fitting
Heat exchange motor fitting
Screw the lambda probe in place above the
induced draught fan and plug in the lambda
probe cable, induced draught fan cable and
the heat exchange motor cable.
Flue pipe
Induced draught fan mounted correctly

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6.2 Assembling the primary (PAF) and secondary air flap (SAF) & Ignition
PAF left_ Ignition in the middle_SAF
right
Section PAF
Fittings PAF (8); SAF (9); Ignition (1)
Section SAF
Assemble the PAF & SAF with the supplied allen screws to the three points of the cover. Motor
position as seen in the photo. Then connect the cables to the respective plug. Labeling see pic-
tured above. With new delivery, the ignition element is pre-assembled.
6.3 Assembling FT - Probe
Position FT-probe
Cable bushing FT-probe
The flame temperature probe is placed on the left next to the cleaning lid above. Cables are laid
under the platinum carrier plate and are led back up on the right side through the round cable
entry opening and through the rear cable slot.
6.4 Assembling door contact switch (DCS) and grate-magnet connection
Position DCS & grate-magnet
At the back (rear bottom) of the boiler is the door contact switch (DCS) for the ash pan (2 - pin
connector) or grate-magnet for grate cleaning (plug directly on the grate-magnet).

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6.5 Assembling Safety Temperature Limiter (STL) & Boiler Probe & Control Board Cable
Position STL & control unit cable
Position STL capillary probe & boiler probe
The safety temperature limiter (STL) and the control board cable are located on the front top
right. STL has to be screwed on and the cables are stowed below the circuit board carrier plate
and the plug is passed over the rear cable slot up to the circuit board, the capillary tube is fed to
the thermowell on the right side of the clining lid.
The boiler probe as well as the STL probe are inserted into the same thermowell and led to the
circuit board via the rear cable.
Both probes are secured with a wire retaining spring from slipping out of the thermowell.
The loose end of the control board cable is later connected to the control unit on the casing. The
remaining cable is tucked under the circuit board carrier plate and led out and upwards through
the rear cable slot.
6.6 Assembling I/O-circuit board & cable connection
Position I/O-circuit board carrier plate
The circuit board carrier plate is on the top front
of the boiler. All internal cables lead to the top
through the rear cable slot.
Insertion of the I/O-circuit board and positioning on the
bolts
Slide the circuit board with the cover plate into
the rear slot and position the circuit board so
that the two front holes are placed on the
intended bolts. Then pull the nuts thight on the
bolts to prevent slipping of the circuit board.

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The platinum slots 1-19 are located on top of the cover plate of the circuit board and are for the
internal wiring of the boiler, the platinum slots 20-37 are located on the green connector on the
front side and is for the external wiring.
The two safety pins 38 & 38.1 are located on the circuit board at the top, and serve as fuse
protection.
Connection for tank units and Vario auger feeding system:
Cable connection circuit board
1 –ignition
2 –feeding motor
3 –discharge motor (Caution cable must be connected in
suction feeding system to the relay X2)
4 –RS-485 Bus for heating circuit control
5 –RS-485 data link for the control unit and digital room
unit
6 –door contact
7 –tilting grate
8 –primary air flap
9 –secundary air flap
10 –induceed draught fan
11 –STL safety temperature limiter
12 –return increase (pump)
13 –insertion probe
14 –boiler probe
15 –FT-probe
16 –Lambda probe
System voltage supply
17 –INIT-feeding switch
18 –reserve
19 –heat exchange cleaning/ suction turbine
20 –Error message or disengaging second boiler
21 –boiler pumpe
22 –layer feeding valve
23 –heating pump 1
24 –mixer1
25 –heating pump 2
26 –mixer 2
27 –system voltage
28 –external start
29 –locking device
30 –boiler probe
31 –outside sensor
32 –flow sensor 1
33 –flow sensor 2
34 –room probe 1
35 –room probe 2
36 –buffer probe 1
37 –buffer probe 2
38 –fuse output T 10A
38.1 –fuse output after STL T 10A

Assembly- and Installation
Instructions
Lohberger Heiztechnik
GmbH
N28/HB N28/GB
Seite 16
Lohberger Heiztechnik GmbH, A-5020 Salzburg-Bergheim, Rechtes Salzachufer 40 Tel. [phone], Fax-DW 9
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6.7 Fitting relay box for screw conveyor system & cabeling
Relay box at delivery
Relay box suitable for fitting
To be able to use the relay box remove the green 3-pole plug and the short black cable (see
picture on the left) before assembly.
Cable connection relay box with main circuit board
Assemble the relay box to the left of the main
circuit board on the designated bolts. The
fuse and the green plug of the relay box face
to the front.
Connect the gray cable of the relay box to
slot 3 on the main circuit board.
Connect the previously removed cable with
the plug labelling 3 to the relay box X2.
Connect the black cable of the relay box to
the 4-pole green plug (19) in position 3
between N and L.
Connect the loose cable STL-F to the relay
box.
6.8 Assembly cable connection at pellet insertion
Connection relay box with the main circuit board
The electrical connection panel is located on the
bottom right outside of the boiler and is covered
by a lid of the casing from the outside. For
plugging into the power strip open the covering
lid.
Connection feeding motor (2)
Connection discharge motor (3/X2)
Connection feeding sensor (17)
Connection insertion sensor (13)
Connection STL-drop shaft (STL-F)

The recess in the cover is adjacent to the
insertion shaft and is provided to lead the cables.

Assembly- and Installation
Instructions
Lohberger Heiztechnik
GmbH
N28/HB N28/GB
Seite 17
Lohberger Heiztechnik GmbH, A-5020 Salzburg-Bergheim, Rechtes Salzachufer 40 Tel. [phone], Fax-DW 9
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6.9 Backfitting of pellet insertion from the right side to the left
Feeding channel & blindcover disassemble/asssemble
Disassemble feeding channel at the boiler
Assemble blindcover at the boiler
Disassemble the feeding channel at the boiler on the right side
Disassemble the blind cover at the boiler on the left side
Assemble the blind at the boiler on the right side
Assemble the feeding channel at the boiler on the left side
Warning: the green seal always has to be assembled together with the fitted parts.
Turn bottom combustion chamber stone by 180° .
Open the front cleaning lid of the boiler
Take out the upper combustion chamber stone (turn before taking out)
Take out the bottom combustion chamber stone (turn before taking out)
Turn the bottom combustion chamber stone by 180° and refit to the boiler.
Put the the upper combustion chamber stone on top of the bottom combustion chamber
stone
Close cleaning lid again

Assembly- and Installation
Instructions
Lohberger Heiztechnik
GmbH
N28/HB N28/GB
Seite 18
Lohberger Heiztechnik GmbH, A-5020 Salzburg-Bergheim, Rechtes Salzachufer 40 Tel. [phone], Fax-DW 9
Es gelten unsere aktuellen allgemeinen Geschäftsbedingungen.Irrtum, Druckfehler und technische Änderungen vorbehalten
Change cable loop connection from the right side to the left
Disassemble both screws on the plate of the cable connections feeding
Losen cable ties in cable channel
Losen the three screws of the circuit board support plate and lift
Switch cable channel to the other side and refit circuit board support plate
Assemble plate for cable connections on the bottom left.
Mounting of the cable loop with cable ties in the left cable channel

Assembly- and Installation
Instructions
Lohberger Heiztechnik
GmbH
N28/HB N28/GB
Seite 19
Lohberger Heiztechnik GmbH, A-5020 Salzburg-Bergheim, Rechtes Salzachufer 40 Tel. [phone], Fax-DW 9
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7Fitting of the casing elements incl. control unit
7.1 Insert rear panel
Inserting rear panel
Take the rear panel and insert it at the
back of the boiler.
7.2 Fitting left-hand side panel
Hinging the left-hand side panel
Hook the left-hand side panel into the
corresponding slots on the front inside.
Then clip the left-hand side panel to the
rear panel.
7.3 Fitting right-hand side panel
Hinging the right-hand side panel
Hook the right-hand side panel into the
corresponding slots on the front inside.
Then clip the left-hand side panel to the
rear panel.

Assembly- and Installation
Instructions
Lohberger Heiztechnik
GmbH
N28/HB N28/GB
Seite 20
Lohberger Heiztechnik GmbH, A-5020 Salzburg-Bergheim, Rechtes Salzachufer 40 Tel. [phone], Fax-DW 9
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7.4 Fitting of control units
Disassemble design panel control
unit
Connect control unit cable
Disassemble design panel control
unit. First, loosen the flat screws
and slide the panel upwards
slightly, so that it is disengaged
from the hooks.
Lead the loose control unit cable
through the opening.
Connect the control unit cable to
the control unit casing.
Assemble control unit
Assemble design panel control
unit
Clip the the control unit to the
control unit carrier by hinging
the holders to the left of the
control unit casing and then hock
the right clip into place.
Assemble design panel control
unit. First hinge with the hooks
and then fix it with the flat
screws.
7.5 Fitting front cover
Fitting front cover
Take the front cover and push it over the
front plate, where the STL is mounted, until
the lid rests completely on the side panels.
Then fix the lid with sheet-metal screws at
the front and rear.