Froling P4 Pellet 8-60 User manual

Froling GmbH, Industriestrasse 12, A-4710 Grieskirchen, Austria
www.froling.com
Installation Manual
P4 Wood Pellet Boiler
Certified to U.S. Standard: UL 2523-2009
Read and follow the operating instructions and safety information! Subject to technical change!
Report # 456-S-02-2

Catalog # P4I2014

Introduction
Froling GmbH, Industriestrasse 12, A-4710 Grieskirchen, Austria Page 3
www.froeling.com M0930207
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Dear installer,
The FRÖLING P4 Pellet boiler is a state-of-the-art design that conforms
to all currently applicable standards and testing guidelines.
Please read and follow the assembly instructions. They contain safety
instructions and comprehensive information relating to transporting,
setting up and assembling the boiler.
The continuous development of our products means that there may be
minor differences between the illustrations and other content of the
document. If you discover any errors, please let us know.
We reserve the right make technical changes

Contents
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1General information 6
1.1 Installation Hazards 6
1.2Boiler Installation 7
1.2.1 Planning ........................................................................................................... 7
Sizing the Boiler............................................................................................. 7
Choosing an Installer ..................................................................................... 7
Locating the Boiler and Boiler Clearances ...................................................... 7
1.2.2 Approvals and reporting obligations ..................................................................... 8
1.2.3 Requirements for initial filling and re-filling of heating system ................................. 8
1.2.4 Outside Combustion Air ...................................................................................... 8
1.2.5 Combination with storage tank ............................................................................ 9
1.2.6 Chimney connection / chimney system................................................................10
Barometric Damper ..........................................................................................10
Basic Boiler Data for Layout of Chimney System ..................................................11
1.3 Installation Information 11
1.3.1 Hose lines........................................................................................................11
Proper Hose Grounding.....................................................................................12
2Technical Data 13
2.1 Components and Connections 13
2.2 Dimensions 14
2.3 Specification Data 15
3Boiler Installation 15
3.1 Transport 15
3.1.1 Positioning.......................................................................................................15
3.1.2 Temporary storage ...........................................................................................16
3.2 Setting up the Boiler Room 17
3.2.1 Removeing the boiler from pallet ........................................................................17
3.2.2 Transporting in the boiler room ..........................................................................18
3.3 Dismantling for location where positioning is difficult 19
3.3.1 Removing the stoker assembly and insulation ......................................................19
3.3.2 Dismantling the suction cyclone cover .................................................................20
3.3.3 Dismantling the stoker unit................................................................................21
3.3.4 Notes for reassembly ........................................................................................23
3.4 Assembling the pellet boiler 24
3.4.1 Before Installation ............................................................................................24
3.4.2 Fitting the ash container and doors .....................................................................26
3.5 Electrical connection 28
3.5.1 Core Module-Overview ......................................................................................28
3.5.2 Hydraulic System Module Overview.....................................................................29
3.5.3 Pellet Module Overview .....................................................................................29
3.5.4 Fan Installation ................................................................................................30
3.5.5 Wire Connections..............................................................................................31
3.6 Install delivery system 34

Contents
Froling GmbH, Industriestrasse 12, A-4710 Grieskirchen, Austria Page 5
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3.6.1 Universal suction system .................................................................................. 34
Variant 1 - Comfort Pellet Box .......................................................................... 35
Variant 2 - Eco Pellet Box................................................................................. 36
Installing the suction probes and lines ............................................................... 37
3.6.2 Suction screw system....................................................................................... 38
3.6.3 Bag silo system ............................................................................................... 42
3.6.4 Pellet storage area ........................................................................................... 43
Size of storage area ........................................................................................ 44
Impact cushion ............................................................................................... 44
4Initial Startup 45
4.1 General information 45
4.1.1 Before heating up for the first time .................................................................... 45
4.2 Setting “Max Level” sensor 45
5Plumbing Systems 46
5.1 Sensors 46
5.1.1 Immersion Sensor-Boiler sensor, DHW Sensor, Storage Tank Sensor (Item #18641).46
5.1.2 Solar Collector Sensor- (Item #67036)............................................................... 46
5.1.3 Contact Sensor- Return feed sensor, supply feed sensor (Item # 67391A). (NOT USED
AT THIS TIME) ........................................................................................................ 46
5.1.4 External Sensor (NOT USED AT THIS TIME) ........................................................ 46
5.2 Bus System 47
5.2.1 Hydraulic Module ............................................................................................. 47
5.2.2 Room Console RBG 3200 .................................................................................. 47
5.2.3 Bus Cable ....................................................................................................... 47
5.3 Sensor Functions for Standard Systems 48
5.3.1 Top Storage Tank Sensor (sensor 0.1): .............................................................. 48
5.3.2 Bottom Storage Tank Sensor (sensor 0.2): ......................................................... 48
5.3.3 DHW Tank (sensor 0.3): ................................................................................... 48
5.3.4 Bottom DHW Tank (sensor 0.4):........................................................................ 48
5.3.5 Oil/Gas Boiler Temperature Sensor (sensor 0.5): ................................................. 48
5.4 Connection Instructions 48
5.4.1 Oil/Gas boiler connections: ............................................................................... 48
5.4.2 Pellet Boiler Circulator Pump Connection (Pump 0.1):........................................... 50
5.4.3 DHW Circulator Pump Connection (Pump 0.2) ..................................................... 50
5.4.4 Temperature Sensors (sensor 0.1-0.5) ............................................................... 50
5.5 Plumbing at the Boiler 50
5.6 Return temperature control (Only for the model 80/100) 51
5.7 Supply and Return Connections 51
5.8 Plumbing Schematics 52
5.8.1 Thermal storage sizing ..................................................................................... 52
5.8.2 For systems with thermal storage ...................................................................... 52
5.8.3 For systems without thermal storage.................................................................. 54

General
Standards, Design, Assembly
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1General information
It is unlawful to carry out modifications to the boiler or to change or
deactivate safety equipment.
In addition to the operating instructions and the applicable national and
local codes and regulations for installation and operation of the boiler
system, all fire, police, and electrical regulations must be observed.
1.1 Installation Hazards
Install, modify and use only in accordance with manufacturer’s manuals.
Refer to authorities having jurisdiction for proper installation. Contact
local building and fire officials about restrictions and installation
inspection in your area. If there are no applicable local codes, follow
ANSI/NFPA 211 and CAN/CSA B365. Special precautions are required
for passing the Chimney through a combustible wall or ceiling.
Inspect and clean exhaust system, Fuel Loading Chamber, Combustion
Chamber, Ash-Pits, and Heat Exchanger frequently in accordance with
owner’s manual.
DANGER!
Working on electrical components may cause severe injuries from electric
shocks!
WARNING!
The electrical system of the boiler shall be supplied from a double 115 V 60
Hz (nominal 230 V AC) 15 amp branch circuit including neutral and ground
connection. For wiring instructions please refer to Section 3.3 in this
Installation Manual!
Chimney must be minimum 5’’ (127 mm) diameter listed UL-103 HT or
ULC-S629 residential all-fuel type for models 8/15 and 20/25 and minimum
6” (150 mm) for models 32/38 and 48/58. Flue connector pipe must be 5”
(127mm) or 6’’ (150 mm) diameter (dependent upon boiler model) made of
a minimum 24 MSG black steel.
Inadequate design, installation and maintenance of the flue gas system will
lead to insufficient chimney draft and could result in Danger of Life or
Severe Injury caused by serious faults in combustion, e.g. explosively
combustion of wood gases and flash fires!
This boiler requires fresh air for safe operation and must be installed so
there are provision for adequate combustion and ventilation air!
CAUTION!
Do not connect this unit to a Chimney flue serving another appliance!
Flooring must be a minimum 3/8’’ (10 mm) non-combustible material
covering the installation clearance area! The floor must be level and
reinforced if required. For construction of the floor beneath the boiler please
pay attention to weight of boiler, water content and wood fuel according to
the Installation Manual!
Connect to an existing boiler system in combination with heat storage only!
Use original spare parts only. Installation of non-licensed replacement parts
will void the warranty!

General
Standards, Design, Assembly
Froling GmbH, Industriestrasse 12, A-4710 Grieskirchen, Austria Page 7
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1.2 Boiler Installation
This section describes the steps to installing and starting-up the boiler.
This section is directed at the installer.
1.2.1 Planning
Sizing the Boiler
It is critical to size the boiler properly. A proper up to date heat load
calculation is advised. An accurate history of building fuel usage over
several years can help to calculate the proper size boiler. Boiler sizing is
the responsibility of the installer. Tarm Biomass bears no responsibility
for boiler sizing, but can provide sizing input.
Choosing an Installer
Choosing a competent, licensed installer is critical to the successful
installation of the boiler. The installer is responsible for all planning,
installation, start-up, troubleshooting, owner training, and annual
maintenance for the boiler. Some aspects of the system piping, start-up,
and operation may differ from normal practice in fossil fuel boiler
installation. To be successful, the installer must study this manual,
follow conceptual drawings and instructions provided, understand the
installation tasks, and contact Tarm Biomass for help when necessary.
Tarm Biomass will provide phone assistance at no additional cost to the
original boiler owner to assure success in the installation.
Locating the Boiler and Boiler Clearances
The boiler must be installed with the minimum installation clearances to
combustible materials outlined on the next page. Clearances may only
be reduced by means approved by the regulatory authorities.
The boiler is not suitable for outdoor installation. It must be located in a
weather-tight, protected space.
The boiler must be placed on a level, non-combustible floor, such as a
concrete slab on earth.
If the boiler is placed near inhabited rooms, so that flue gas can easily
penetrate into these rooms, a carbon monoxide alarm must be
installed that can give a warning regarding possible escapes of
carbon monoxide into the inhabited rooms.
DO NOT INSTALL THIS BOILER IN A MOBILE HOME. There is no safe
way this boiler can be installed inside a mobile home.
The boiler must be installed with the minimum installation clearances to
combustible materials outlined below. Clearances may only be reduced
by means approved by the regulatory authorities.
Minimum installation clearances see chapter 3.1.5

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Standards, Design, Assembly
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1.2.2 Approvals and reporting obligations
IMPORTANT: Install, modify and use only in accordance with
manufacturer’s installation & operation manuals. Refer to authorities
having jurisdiction for proper installation. Contact local building and
fire officials about restrictions and installation inspection in your
area. If there are no applicable local codes, follow ANSI/NFPA 211
and CAN/CSA B365. Special precautions are required for passing the
Chimney through a combustible wall or ceiling.
Inspect and clean exhaust system frequently in accordance with
Owner’s Manual.
1.2.3 Requirements for initial filling and re-filling of heating system
Water quality conditions for initial filling the heating system:
For first filling of heating system water must be clean, pure or purified,
odorless and without suspended matter.
Water hardness must not exceed 580 grain/fl.oz. or 300 ppm CaCO3;
(300 mg/l), meaning medium hard to soft water.
Concentration of chlorides must not exceed 58 grain/fl.oz. (30 mg/l).
Boiler system water pH should be 8.0-8.6.
If water quality is poor, water treatment additives should be considered.
For re-filling of small amounts, water shall be clean at least.
For swimming pools or spas do not use heating water directly. Proper
sized heat exchangers are required! Boiler water is not potable!
IMPORTANT: For initial filling and re-filling bleed the filling hose before
connecting to the heating system to prevent excess air from being
introduced to the system.
Use of a suitable antifreeze mix is allowed, but will cause a loss in heat
transfer efficiency.
1.2.4 Outside Combustion Air
Provision for outside combustion air may be necessary to ensure that
fuel-burning appliances do not discharge products of combustion into
the house. Guidelines to determine the need for additional combustion
air may not be adequate for every situation. If in doubt, it is advisable
to provide additional air.
Outside air may be required if:
1. The solid fuel fired appliance does not draw steadily; experiences
smoke roll out from boiler, burns poorly, or back drafts whether
or not there is combustion present.
2. Existing solid fuel fired equipment in the house, such as
fireplaces or other heating appliances smell, do not operate
properly, suffer smoke roll out when opened, or back-draft
whether or not there is any combustion present.
3. Any of the above symptons are alleviated by opening a window
slightly on a calm (windless day).
4. The house is built very tightly with a well sealed vapor barrier or
foam type insulation and tight fitting windows and/ or has any
powered devices which exhaust in the house.
5. There is excessive condensation on windows in the winter.
6. A non-balancing ventilation system is installed in the house.

General
Standards, Design, Assembly
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7. Where fans are used in the fuel storage area, they should be
installed so as not to create negative pressures in the room
where the boiler is located.
If these, or other indications, suggest that infiltration air is inadequate,
additional combustion air should be provided from the outdoors.
If a mechanical ventilation system (air exchange or heat recovery) is
already present in the home it may be able to provide sufficient
combustion make-up air for the solid fuel fired appliance. The ventilation
system may need to be re-balanced after installation of the Froling P4.
N O T E
Canadian installations must conform to ANSI/NFPA outside air
requirements of 1 sq. Inch per 2.5cm (1,000Btu/hr) (.30kW/hr).
1.2.5 Combination with storage tank
N O T E
We recommend that you use the pellet boiler with a storage tank, as this
allows you to achieve a reduction in start-up and shut downs within the ideal
performance range of the boiler.
Please contact your installer or a Fröling technician directly for the right
measurements of the storage tank.
If your P4 Pellet boiler has been installed with a Thermal Storage
System, this system may require periodic maintenance. Please review
the periodic maintenance requirements of your thermal storage system
with your installer.

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Standards, Design, Assembly
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1.2.6 Chimney connection / chimney system
The chimney is one of the most critical factors in the successful
operation of any solid fuel heater, including the Fröling P4 boiler. A good
chimney will provide a continuous and dependable draft to pull the
exhaust gasses out of the building. The entire flue gas system must be
designed to prevent, wherever possible, damage caused by seepage,
insufficient feed pressure and condensation. Follow manufacturer’s
installation instructions for installing and supporting any specific
chimney product.
N O T E
The boiler must be connected to a stainless-lined chimney or to a factory-built
Type UL 103 HT (ULC S629 in Canada) approved chimney. The chimney must
be in good condition. If the boiler is connected to a dirty or inadequate
chimney, it can present a serious fire hazard. All chimneys and connections
must conform to NFPA standard #211. Install vent at clearances specified by
the vent manufacturer. No other appliance should be connected to this flue
unless allowed by the local code authority. Consult your local inspector for
chimney requirements and install the boiler in accordance with all applicable
codes.
Flue gas exhaust temperatures can be low enough to cause
condensation in chimneys. Condensation will, over time, damage a
masonry chimney. Accordingly, installation of a stainless chimney liner
(made with 304, 316, or 321) inside the chimney flue is strongly
recommended.
The flue gas temperatures (when cleaned) and the additional flue gas
values can be found in the technical specification sheets (See chart
below “see chart below “Boiler data for constructing the flue gas
system”.
The smoke pipe connecting the boiler to the chimney flue must be black
or stainless (stainless recommended), have a minimum thickness of 24
gauge, and rise a minimum of ¼” per foot of run toward the chimney.
Smoke pipe sections must be attached to one another with a minimum
of three sheet metal screws and sealed with hi-temperature silicone. The
smoke pipe should not contain more than two 90° elbows (45° elbows
are preferred over 90° elbows).
The chimney draft must be stable (see chart below “Basic Boiler Data for
Layout of Chimney System”.
The top of the chimney must be 3 feet (0.9 m) above the roof and 2 feet
(0.6 m) above any structure within 10 feet (3.0 m) measured
horizontally.
Barometric Damper
We recommend that you install a barometric damper. 1
Install the barometric damper directly under the mouth of the flue
line, as there is always low pressure there. 1
1

General
Standards, Design, Assembly
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Basic Boiler Data for Layout of Chimney System
P4 Pellet
Description
Unit
8
15
20
25
32
38
48
60
80
100
Flue gas temperature
ºF
284
300
300
300
320
320
320
338
320
338
Flue gas mass flow RL
PL
lb/hr
lb/hr
55
24
79
33
115
44
143
55
172
70
203
90
309
132
342
154
474
165
606
209
Required Draft RL
PL
inch
WC
0.03
0.02
0.03
0.02
0.03
0.02
0.03
0.02
0.03
0.02
0.03
0.02
0.03
0.02
0.03
0.02
.032
.024
.032
.024
Flue pipe diameter
inches
5
5
5
5
6
6
6
6
8
8
RL = Nominal Load, PL = Partial Load
1.3 Installation Information
Water lines should not be located in close proximity to the storage
area or the feeder units due to the dangers posed by condensation
and bursting water pipes!
Check the delivered items for foreign objects in the individual
components.
In the pellet store room an impact cushion must be installed on the
opposite side to the filler pipes. This reduces wear on the pellets
when they are blown in and stops the finish being worn off. Broken
pieces of masonry or finish and other foreign bodies (small stones,
pieces of wood, screws, etc.) can block the delivery system or the
pellet feed into the boiler and cause the system to fail. In case of
faults due to such foreign bodies, the guarantee is void.
In time pellets leave dust on the ground; this can impair the process
of moving them from the pellet storage area.
For this reason you should check and clean if necessary before
refilling.
1.3.1 Hose lines
For the hose lines used with the suction device, the universal suction
systems, and the silo delivery unit, please observe the following:
Do not kink the hose lines! Minimum bending radius = 12” (30cm).
Lay the hose lines as straight as possible! If the lines are
sagging, it can lead to so-called “pockets.”Problem-free
pellet feeding cannot be guaranteed.
Lay the hose lines in short sections away from walking areas!
Hose lines are not UV-proof!
Therefore: do not lay the hose lines outdoors!
Hose lines are suitable for temperatures up to 140 ºF (60°C)!
Therefore: Hose lines must not come into contact with flue
gas pipes or un-insulated heating pipes!
Hose lines must be earthed on both sides to ensure that no
static charge builds up as a result of transporting the pellets!
The suction line must be in a single section!
The return-air line can be made up of several sections, but
potential equalisation must be established throughout the
line!

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Standards, Design, Assembly
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Proper Hose Grounding
When connecting the hose lines to the individual connection pipes,
ensure there is proper grounding throughout the line!
Expose approximately 1¼” (3 cm) of the earth conductor at
the end of the hose line.
TIP: Slit the insulation open along the wire with a knife.
Bend the earth wire inwards in a loop
This prevents the earth wire from being damaged by the
feed of pellets.
Fit a hose clip to the hose line
Attach the hose line to the connector
Ensure that contact is established between the earth conductor
and the connector!
Tighten the hose clip

Technology
Components, Connections, and Dimensions
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2Technical Data
2.1 Components and Connections
P4 Pellet
Pos.
Component
Unit
8 / 15
20 / 25
32 / 38
48/60
80/100
A
Boiler outfeed connection
inches
1
1½
1½
1½
2
B
Boiler return feed connection
1
1½
1½
1½
2
C
Drain
½
½
½
½
1
D
Air vent
½
½
½
½
1
E
Pellet suction line
inches
2
2
2
2
2
F
Return-air line
G
Flue gas pipe connection
5
5
6
6
8
1
Lambdatronic P 3200 control system
2
Switch box
3
Safety temperature limiter - STL
4
Induced draught fan
4
C
A
G
1
2
3
B
D
E
F

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Components, Connections, and Dimensions
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2.2 Dimensions
P4 Pellet
Dimensions
Description
Unit
8 / 15
20 / 25
32 / 38
48/60
80/100
L
Length, boiler 1)
inches
29⅛
29⅛
32¼
35½
39⅜
L1
Total length inc. induced draught
fan
37
37
40⅛
43¼
42⅛
B
Width, boiler
inches
23⅝
30⅜
33¾
40½
48⅝
B*
Width, boiler, inc. support for
positioning unit 2)
27¾
34½
38
50¼
58¼
B1
Total width, inc. suction cyclone
46⅝
53⅜
56¾
70½
82
H
Height, boiler 3)
inches
50⅜
50⅜
56⅜
62⅜
67⅜
H1
Total height, inc. suction cyclone
65⅜
65⅜
74⅞
74⅞
74⅞
H2
Height, flue pipe connection
53⅛
53⅛
60¼
66⅜
70¼
H3
Height, outfeed connection
18⅛
18⅛
18⅛
20¼
20½
H4
Height, return connection
37
37½
42¾
48⅞
53½
H5
Height, drainage connection
18⅛
18⅛
18⅛
20¼
20½
H6
Height, ventilation connection
40½
40½
45½
51½
56¼
H8
Height, induced draught fan
connection
43
43
47⅞
54⅛
58⅞
H15
Height, suction system connection
58¼
58¼
67¾
67¾
67¾
Flue pipe diameter
inches
5
5
6
6
8
1) Corresponds to the minimum positioning length
2) Corresponds to the minimum positioning width after removing the stoker assembly, suction cyclone and positioning unit
3) Corresponds to the minimum positioning height after removing the stoker assembly, suction cyclone and positioning
unit

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Components, Connections, and Dimensions
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2.3 Specification Data
P4 Pellet
Component
Unit
8
15
20
25
32
38
48
60
80
100
Rated heat output
Btu/
Hr
35,800
50,800
68,200
85,300
109,000
129,650
163,780
200,000
273,000
341,000
Heating efficiency
range
10,500
-
35,800
10,500
-
50,800
20,500
-
68,200
25,600
-
83,300
30,400
-
109,000
30,400
-
129,650
57,300
-
163,780
57,300
-
200,000
82,000
-
273,000
102,000
-
341,000
Electrical Connection
240V / 60Hz fused 15A
Electrical
Consumption
W
96
123
110
110
110
110
120
120
120
120
Weight of boiler1)
lbs
772
772
948
948
1168
1168
1676
1676
2425
2425
Water Contents
gals
18.5
18.5
21
21
33
33
45
45
74
74
Maximum boiler
temperature setting
°F
176
176
176
176
176
176
176
176
190
190
Minimum boiler
temperature setting
104
104
104
104
104
104
104
104
104
104
Boiler Test Pressure
psi
65
65
65
65
65
65
65
65
65
65
Pressure Vessel
Standard
EN
303-5
EN
303-5
EN
303-5
EN
303-5
EN
303-5
EN
303-5
EN
303-5
EN
303-5
Permitted fuel
Wood pellets Ø (¼”) 6mm
3Boiler Installation
3.1 Transport
The boiler is delivered packed in cardboard
and on a pallet.
Move the boiler without jarring or
jolting.
Follow the instructions on the
packaging when moving the boiler.
3.1.1 Positioning
NOTICE
Damage to components if handled incorrectly
❒Follow the transport instructions on the packaging.
❒Transport components with care to avoid damage.
❒Protect the packaging against damp conditions.
❒Pay attention to the pallet's center of gravity when lifting.

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Components, Connections, and Dimensions
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❒Position a fork-lift or similar lifting device using the pallet and bring in the
boiler.
If the boiler cannot be brought in on the pallet:
❒Remove the cardboard and remove the boiler from the pallet
⇨See "Remove boiler from pallet" [page 17]
If you need to dismantle the boiler to bring it in:
❒Dismantle the components of the boiler until it can be brought in
⇨ See "Dismantling for location where positioning is difficult" [page 19]
Positioning using a crane:
❒Remove the insulating cover, heat exchanger cover(s) and combustion
chamber cover(s).
❒Correctly attach the crane hook to the attachment point for lifting
(underneath the cover) and position the boiler.
3.1.2 Temporary storage
If the system is to be installed at a later time:
Store the boiler, insulation and control unit in a safe, dust-free, and
dry location.
Moisture and frost reduce the effectiveness of insulation and can
destroy electronic components.

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3.2 Setting up the Boiler Room
3.2.1 Removeing the boiler from pallet
❒Remove packing bands with suitable tools.
❒Lift off the cardboard.
❒Remove the transport covers (1) from the insulated door(s) and ash
container as well as the cleaning devices (2).
❒Remove the protective casing.
On the front of the boiler:
❒Remove securing devices used during transportation on the left and right
side of the base.
❒Remove two screws each on the left and right of the ash collecting plate
and remove the collecting plate.
❒Pull out the floor insulation behind.
At the back of the boiler:
❒Remove securing devices used during transportation on the left and right
side of the base.
❒Lift boiler off pallet.

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3.2.2 Transporting in the boiler room
Position a fork-lift or similar lifting device at the base frame of the
boiler and transport it to the designated position.
If no lifting device of this type is available:
After removing the suction unit thread a carrying belt through the
lateral openings (1) of the base frame and lift the boiler.
Position transport rollers or similar with appropriate load-bearing
capacity under the base frame and move to the designated
position.
Set up boiler at intended location
Observe the minimum clearances in the boiler room.
3.2.3 Minimum clearances in the boiler room
Dimensions
Component
Unit
Distance
A
Minimum distance between suction cyclone and wall
inches
12
B
Maintenance range for ID fan
14
C
Front of Appliance to Combustibles
36
D
Minimum distance from side of boiler to wall
8
E
Combustibles to Flue Pipe
18
F
Ceiling to Appliance
18
G
Ceiling to Suction Cyclone
12
N O T E
Clearances may only be reduced by means approved by the regulatory authority.
1
E
F
G

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Components, Connections, and Dimensions
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3
3.3 Dismantling for location where positioning is difficult
If there is not enough room to bring in the pre-assembled boiler, certain
components can be dismantled.
This section shows the maximum possible disassembly. Only dismantle
the parts absolutely necessary to bring in the boiler.
3.3.1 Removing the stoker assembly and insulation
❒Remove the fastening screws on the sound insulation hood of the stoker
assembly and remove the sound insulation hood.
❒Lift the front part of the stoker assembly up and remove.
❒Lift the back part of the stoker assembly up and remove.
❒Remove the insulating cover.
❒Remove the two screws and lock washers from the flaps of the controller
cover.
Caution: Do not lose the lock washers!

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❒Remove the screw and lock washer on the bottom of the controller cover.
❒Remove the controller cover.
3.3.2 Dismantling the suction cyclone cover
❒Remove the covering of the middle
cable duct.
At the pellet module:
❒Unplug the components:
▪"Suction unit M3"
▪"Max level S1"
▪"Gate valve M8"
❒Undo the cable ties at the cable leadthrough.
❒Pull out the cables of the unplugged components.