Fröling 7 User manual

Installation instructions
Pellet bag silo type 7 - type 50
Translation of original German version of installation instructions for technicians.
Read and follow all instructions and safety instructions.
All errors and omissions excepted.
M1400822_en | Edition 15/02/2022

Table of Contents
ii M1400822_en | Installation instructions Pellet bag silo type 7 - type 50
1 General ......................................................................................................................................................... 3
2 Safety............................................................................................................................................................ 4
2.1 Hazard levels of warnings..................................................................................................................... 4
2.2 Permitted uses...................................................................................................................................... 5
2.2.1 Permitted fuels ........................................................................................................................... 5
2.3 Qualification of assembly staff .............................................................................................................. 5
2.4 Personal protective equipment for assembly staff ................................................................................ 6
2.5 Qualification of operating staff .............................................................................................................. 6
2.6 Protective equipment for operating staff ............................................................................................... 6
3 Technology .................................................................................................................................................. 7
3.1 Overview of the bag silo types.............................................................................................................. 7
3.1.1 Measurements: bag silo types 7 – 20 ........................................................................................ 7
3.1.2 Measurements: bag silo types 30 – 50 ...................................................................................... 8
3.1.3 Capacity ..................................................................................................................................... 9
3.2 Shaker (optional) .................................................................................................................................. 9
3.2.1 Dimensions ................................................................................................................................ 9
4 Assembly...................................................................................................................................................... 10
4.1 General information for installation room.............................................................................................. 10
4.2 Materials supplied................................................................................................................................. 11
4.3 Fitting the bag silo frame ...................................................................................................................... 12
4.4 Fitting the filling pipe ............................................................................................................................. 19
4.4.1 Filling pipes for low rooms ......................................................................................................... 22
4.5 Fitting the suction probe ....................................................................................................................... 23
4.6 Install hose lines ................................................................................................................................... 24
4.6.1 Assembly information for hose lines .......................................................................................... 24
4.7 Shaker (optional) .................................................................................................................................. 26
4.7.1 Fitting the shaker ....................................................................................................................... 26
4.7.2 Wiring the shaker ....................................................................................................................... 27
4.7.3 Activating the shaker in the software ......................................................................................... 28
4.7.4 Functions ................................................................................................................................... 28
4.8 Final Check........................................................................................................................................... 29
5 Operation...................................................................................................................................................... 30
5.1 Notes on first filling ............................................................................................................................... 30
5.2 Before Filling......................................................................................................................................... 30
5.3 Filling process....................................................................................................................................... 32
5.4 Residual pellets in the bag silo ............................................................................................................. 32
5.4.1 Bag silo without shaker .............................................................................................................. 32
5.4.2 Bag silo with shaker ................................................................................................................... 32
5.5 Cleaning................................................................................................................................................ 33
5.6 Recurrent Check................................................................................................................................... 33
5.7 Correcting any cloth shifts .................................................................................................................... 34

General | 1
M1400822_en | Installation instructions Pellet bag silo type 7 - type 50 3
1 General
Thank you for choosing a quality product from Froling. The product features a state-of-
the-art design and conforms to all currently applicable standards and testing
guidelines.
Please read and observe the documentation provided and always keep it close to the
system for reference. It contains important safety information and all the operation and
maintenance specifications needed to operate the system safely, properly,
environmentally friendly and cost-effectively.
The constant further development of our products means that there may be minor
differences from the pictures and content. If you discover any errors, please let us
know: [email protected]
Subject to technical change.

2 | Safety
4 M1400822_en | Installation instructions Pellet bag silo type 7 - type 50
2 Safety
2.1 Hazard levels of warnings
This documentation uses warnings with the following hazard levels to indicate direct
hazards and important safety instructions:
DANGER
The dangerous situation is imminent and if measures are not observed it will lead
to serious injury or death. You must follow the instructions!
WARNING
The dangerous situation may occur and if measures are not observed it will lead to
serious injury or death. Work with extreme care.
CAUTION
The dangerous situation may occur and if measures are not observed it will lead to
minor injuries.
NOTICE
The dangerous situation may occur and if measures are not observed it will lead to
damage to property or pollution.

Safety | 2
M1400822_en | Installation instructions Pellet bag silo type 7 - type 50 5
2.2 Permitted uses
The Froling pellet bag silo discharge system is only to be used for storing wood pellets.
Only use fuels specified in the "Permitted fuels" section.
The unit should only be operated when it is in full working order. It must be operated in
accordance with the instructions, observing safety precautions, and you should ensure
you are aware of the potential hazards. The inspection and cleaning intervals in the
operating instructions must be observed. Ensure that any faults which might impair safety
are rectified immediately.
The manufacturer or supplier is not liable for any damage resulting from non-permitted
uses.
Only original spare parts or specific alternative spare parts authorised by the
manufacturer may be used.
2.2.1 Permitted fuels
Wood pellets
Wood pellets made from natural wood with a diameter of 6mm
Note on standards EU: Fuel acc. to EN ISO 17225 - Part 2: Wood pellets class A1 / D06
and/or: ENplus / DINplus certification scheme
General note:
Before refilling the store, check for pellet dust and clean if necessary.
2.3 Qualification of assembly staff
CAUTION
Assembly and installation by unqualified persons:
Risk of personal injury and damage to property
During assembly and installation:
rObserve the instructions and information in the manuals
rOnly allow appropriately qualified personnel to work on the system
Assembly, installation, initial startup and servicing must always be carried out by qualified
personnel:
- Heating technician / building technician
- Electrical installation technician
- Froling customer services
The assembly staff must have read and understood the instructions in the documentation.

2 | Safety
6 M1400822_en | Installation instructions Pellet bag silo type 7 - type 50
2.4 Personal protective equipment for assembly staff
You must ensure that staff have the protective equipment specified by accident
prevention regulations.
▪ For transportation, setup and assembly:
- suitable work wear
- protective gloves
- sturdy shoes (min. protection class S1P)
2.5 Qualification of operating staff
CAUTION
If unauthorised persons enter the Installation room / boiler room:
Risk of personal injury and damage to property
rThe operator is responsible for keeping unauthorised persons, in particular children,
away from the system.
Only trained operators are permitted to operate the unit. The operator must also have
read and understood the instructions in the documentation.
2.6 Protective equipment for operating staff
You must ensure that staff have the protective equipment specified by accident
prevention regulations.
▪ For operation, inspection and cleaning:
- suitable work wear
- protective gloves
- sturdy shoes

Technology | 3
M1400822_en | Installation instructions Pellet bag silo type 7 - type 50 7
3 Technology
3.1 Overview of the bag silo types
3.1.1 Measurements: bag silo types 7 – 20
F
Item Description Unit Type 7 Type 8 Type 9 Type 10 Type 20
HBag silo frame height cm 190 182
H1 Cloth bag height at max. expansion 230 240
H2 Filling pipe height above crossbar 1) 196 - 217 188 - 209
Minimum store height required with filling pipe
above crossbar
220 220
H32) Filling pipe height below crossbar2) 165 157
Minimum store height required with filling pipe
below crossbar
195 195
LBag silo frame length 150 200 200 200 230
L1 Distance between bag silo frame and filling pipe 75 100 100 100 115
WBag silo frame width 125 125 150 200 230
W1 Distance between bag silo frame and filling pipe
3)
62.5 62.5 75 - -
S1 Distance between filling pipe end (Storz A
coupling) and wall
minimum 30
S2 Distance from bag silo to the wall minimum 10
KFilling pipe length 65
DFilling pipe diameter 10
FBase plate contact area 12 x 8.5 16 x 8.5
Number of filling pipes units 1
1. The height can vary depending on where the bracket for the filling pipes is positioned – measurement to centre of filling pipe diameter
2. If necessary due to lack of store height, the filling pipe can be fitted below the crossbar - measurement to centre of filling pipe diameter
3. Only with bag silo types 7, 8, 9: filling pipe can also be fitted on short side if necessary

3 | Technology
8 M1400822_en | Installation instructions Pellet bag silo type 7 - type 50
3.1.2 Measurements: bag silo types 30 – 50
F
Item Description Unit Type 30 Type 40 Type 50
HBag silo frame height cm 190
H1 Cloth bag height at max. expansion 250
H2 Filling pipe height above crossbar 1) 196 - 217
Minimum store height required with filling pipe above
crossbar
220
H32) Filling pipe height below crossbar2) 157
Minimum store height required with filling pipe below
crossbar
195
LBag silo frame length 290
L1 Distance between bag silo frame and filling pipe 95
L2 Distance between filling pipes 100
WBag silo frame width 290 200 230
W1 Distance between bag silo frame and filling pipe3) - 100 115
S1 Distance between filling pipe end (Storz A coupling) and
wall
minimum 30
S2 Distance from bag silo to the wall minimum 10
KFilling pipe length 65
DFilling pipe diameter 10
FBase plate contact area 16 x 8.5
Number of filling pipes 4) units 2
1. The height can vary depending on where the bracket for the filling pipes is positioned – measurement to centre of filling pipe diameter
2. If necessary, because of lack of store height, the filling pipe can be fitted below the crossbar - measurement to centre of filling pipe diameter
3. Only with bag silo types 40, 50: a filling pipe can also be fitted on the short side if necessary
4. The second filling pipe is only used for better pellet distribution. The connection is not to be used for extraction.

Technology | 3
M1400822_en | Installation instructions Pellet bag silo type 7 - type 50 9
3.1.3 Capacity
Type 7 Type 8 Type 9 Type 10 Type 20 Type 30 Type 40 Type 50
Capacity with filling pipe above the
crossbar1)
1.6 t 2.0 t 2.4 t 3.7 t 4.7 t 7.4 t 5.0 t 5.9 t
Capacity with filling pipe below the
crossbar1)
1.4 t 1.7 t 2.0 t 2.8 t 3.5 t 5.3 t 3.6 t 4.3 t
1. The specified capacities apply with a pellet bulk weight of 650 kg/m³. After the suction probe has been cleared, you should expect at least 10% of the total volume to remain.
3.2 Shaker (optional)
In the case of bag silo types 10, 20, 30, 40 and 50, the shaker is included as standard,
for bag silo types 7, 8 and 9 it can be retrofitted as an option.
3.2.1 Dimensions
L1 L2
B1
B2
Item Description Unit Bag silo
types 1-5
Bag silo
types 7-9
Bag silo
types 10-50
L1 Shaker length mm 430 440 520
W1 Shaker width 485 380 419
Item Description Unit Gravity discharge unit (other manufacturer)
L2 Shaker length mm 410
W2 Shaker width 490

4 | Assembly
10 M1400822_en | Installation instructions Pellet bag silo type 7 - type 50
4 Assembly
4.1 General information for installation room
rYou must position and install the bag silo in accordance with local fire prevention
regulations.
rThe bag silo can also be set up outside
ÄIt is, however, essential to protect the silo from rain and UV light!
rThe installation site must be flat with a stable base (e.g. reinforced raw concrete)
NOTICE
Modifications to the bag silo’s wooden frame can seriously damage the product.
The structure of the wooden frame is exactly calculated for the bag silo. The
material must not be modified or weakened in any way (e.g. by cutting pieces
out)!
NOTICE
If the height of the place of installation is too low, considerable damage can be caused
to the bag silo / cloth bag when the pellets are being blown in
Therefore:
rMake sure the store is the minimum height!
Ü "Measurements: bag silo types 7 – 20" [}7]
Ü "Measurements: bag silo types 30 – 50" [}8]
NOTICE
Wood is a natural construction material and can undergo slight deformation as a result
of strain, humidity, etc. However, this will not result in any malfunction.

Assembly | 4
M1400822_en | Installation instructions Pellet bag silo type 7 - type 50 11
4.2 Materials supplied
A
Detail A
11
1
1
4
44
4
5
5
5
5
6
6
6
6
87
8
7
9
9
9
9
10
11
10 11
13
14
14
16 15
12
17
18
19
20
3
33
3
2
2
2
2
3
3
3
3
22
2
2
14 x spring washers 12 Hose clamp2)
22 x 4 tension bars1) 13 Filling pipe2) with Storz A coupling
32 x 4 tension bars1) 14 2x pipe clamps
44 x base plates 15 1x securing plate for filling pipe
54 x upright supports 16 1 x holder bracket for filling pipe
64 x angle plates 17 1 x suction probe
72 x bars1) 18 Cloth bag1)
82 x bars1) 19 1 x frame plate
94 x corner joints 20 Shaker3)
10 2 x crossbars1) Not
pictured
Screw set
11 2 x crossbars1)
1. Dimensions depending on bag silo type
2. Types 7, 8, 9, 10, 20: 1x / types 30, 40, 50: 2x
3. Shaker included as standard for types 10, 20, 30, 40, 50 / optional for types 7, 8, 9
NOTICE!When using square bag silos (type 10, 20, 30), the tension bars (items
2 and 3), bars (items 7 and 8) and crossbars (items 10 and 11) are the same
length.

4 | Assembly
12 M1400822_en | Installation instructions Pellet bag silo type 7 - type 50
4.3 Fitting the bag silo frame
Before installation you must determine on which side of the store the filling pipe(s)
should be situated.
▪ Crossbars must always overlap.
▪ Upright supports should always have two crossbars on top.
40 mm 112 mm
rClean the floor and position the flexible cloth bag so that the hanging loop has a
cutout on the filling pipe side
rInsert the first crossbar into the loop as shown and push it through
ÄWith rectangular bag silos (types 40, 50 and types 7, 8 and 9) ensure to use a
crossbar of the correct length depending on the desired positioning of the bag
silo
ÄPosition the crossbar so that the hole closest to the end is facing the filling pipe

Assembly | 4
M1400822_en | Installation instructions Pellet bag silo type 7 - type 50 13
40 mm 60 mm
rPosition 2 upright supports under the crossbar as shown
ÄNote that the holes with a greater separation from the end must be at the top!
rScrew the crossbars and upright supports together with corner joints
ÄAt the upright support always screw only the outer hole to the corner joints
ÄDo not fully tighten the screw joints yet
Typ 30, 40, 50
Typ 10, 20
rInsert transverse bar at the lower loop of the cloth bag
rScrew the upright support and transverse bar together with angle plate
ÄUse top holes for types 30, 40, 50
ÄUse bottom holes for types 10, 20
ÄThere are only two holes on types 7-9
ÄDo not fully tighten the screw joints yet

4 | Assembly
14 M1400822_en | Installation instructions Pellet bag silo type 7 - type 50
40 mm 112 mm
40 mm
112 mm
rInsert the next two crossbars at the loops as shown
rScrew the crossbars to the corner joints
ÄPosition the crossbar on the side of the filling pipe so that the hole farthest from
the end is facing the upright support already fitted
ÄPosition the crossbar on the opposite side so that the hole with the shorter
distance from the end is facing the upright support already fitted
ÄDo not fully tighten the screw joints yet
40 mm 112 mm
rInsert the last crossbar in the cloth bag and screw into the corner joint
ÄPosition the crossbar so that the hole farthest from the end is facing the filling
pipe
ÄDo not fully tighten the screw joints yet

Assembly | 4
M1400822_en | Installation instructions Pellet bag silo type 7 - type 50 15
rPosition the other two upright supports and screw to the corner joints
ÄNote that the holes farthest from the end must be at the top
ÄAt the upright support always screw only the outer hole to the corner joints
ÄDo not fully tighten the screw joints yet
rInsert the two longitudinal bars at the lower loop of the cloth bag
rScrew the upright support and longitudinal bar to the angle plate
ÄDo not fully tighten the screw joints yet

4 | Assembly
16 M1400822_en | Installation instructions Pellet bag silo type 7 - type 50
rInsert the last transverse bar at the lower loop of the cloth bag and screw to the
previously fitted angle plate
rLift the bag silo frame slightly and put the base plates under the upright supports

Assembly | 4
M1400822_en | Installation instructions Pellet bag silo type 7 - type 50 17
rInstall a tension bar at each of the corner joints and the base plate
ÄFor rectangular bag silo types always use four equally long tension bars per
side
ÄEnsure that the tension bars on the left side are always secured to the upright
support and on the right side only to the plate
rScrew the tension bars to a tension pulley in the centre
rAlign the bag silo frame with a spirit level and tighten all screws
AAA
Type 7-9 Type 10-20 Type 30-50
NOTICE!The position of the middle spring washers (A) varies according to the
type of bag silo.

4 | Assembly
18 M1400822_en | Installation instructions Pellet bag silo type 7 - type 50
rPut the black plastic caps on the hexagonal nuts of the middle transverse bar
ÄPlastic caps prevent subsequent damage to the cloth bag

Assembly | 4
M1400822_en | Installation instructions Pellet bag silo type 7 - type 50 19
4.4 Fitting the filling pipe
The filling pipes can be arranged in various ways depending on the bag silo type:
Typ 7/8/9
Typ 30
Typ 40/50
Typ 10/20
Typ 7
Typ 8,9
Bag silo types 7, 8, 9, 10 and 20 have a filling position, whereas with types 7, 8, 9 the
filling pipe can either be fitted on the long or the narrow side. Bag silo type 30 is
equipped with two filling pipes for improved distribution of the pellets. With types 40
and 50 it is possible either to mount two filling pipes on the long side or one filling pipe
on the narrow side.

4 | Assembly
20 M1400822_en | Installation instructions Pellet bag silo type 7 - type 50
rPosition the bracket on the filling pipe side at the middle of the crossbar below the
opening in the cloth bag and fix with 3x Spax bolts
rScrew the securing plate to the holding bracket
ÄAdjust the position of the securing plate to the store height, selecting the highest
possible position
rFit the bottom of the clips to the securing plate