SOLARFOCUS pellet top touch 35 User manual

Read carefully before operating.
Pellet boiler pellettop touch
Installation manual for qualified personnel
DR-6015-EN / v18-202002

About this manual
2 Installation manual pellettop
SOLARFOCUS GmbH, Werkstraße 1, A-4451 St.Ulrich/Steyr
Tel.: [phone] / 50 002-0, Fax: [phone]
[e-mail] www.solarfocus.at N: 281755x
© SOLARFOCUS GmbH, All rights reserved. No part of this document
may be reprinted, duplicated or reproduced in any form without the prior
approval of
SOLARFOCUS GmbH.
Service Hotline:
- Austria, International: 0043 7252 50002 4920
- Germany: 0049 6251 13665-14
- Switzerland: 0041 41 9840889
Content
1About this manual...................................................2
2For your safety.........................................................3
3Product description................................................5
3.1 Technical specifications.................................5
3.2 Dimensions and installation dimensions......6
3.3 Scope of delivery............................................6
3.4 Sectional drawing...........................................7
4Transporting of the boiler......................................8
4.1 Transport aids ................................................8
4.2 Removing the shipping timber ......................8
5Installation................................................................9
5.1 Prior to installation..........................................9
5.2 Installation sequence.....................................9
5.2.1 Removing the covers.............................................9
5.2.2 Install automatic ash extraction..............................9
5.2.3 Connect pellet hose.............................................11
5.2.4 Boiler-controlled room air damper (optional) ........12
5.2.5 Flue gas pipe: Make a hole for emission
measurement.......................................................12
6Hydraulic connection...........................................13
6.1 Fill-up water requirements...........................13
6.2 Connections –overview..............................14
6.3 Thermal overload protection .......................14
6.4 Return flow boosting (RFB)........................ 15
7Electrical connection........................................... 16
7.1 Connections to the boiler power element.. 16
7.2 Power supply for the heating system......... 17
7.3 EMERGENCY OFF switch......................... 17
7.4 Cable management, covers ....................... 17
7.5 System type: Suction system with suction
auger............................................................ 17
7.6 Other connections....................................... 18
7.7 Internet connection...................................... 18
7.8 Types of sensors - overview....................... 18
7.9 Sensor resistance table .............................. 19
7.10 Electrical fusing............................................ 19
8Initial commissioning .......................................... 20
9Annex...................................................................... 20
9.1 Connecting the pellet hose......................... 20
9.2 Pellet storage area...................................... 21
9.3 Chimney connection.................................... 22
9.4 Recommendations of the EU energy
efficiency directive....................................... 23
9.5 Storeroom and conveying system - Overview .................................................................................................. 24
9.6 Commissioning log...................................... 26
9.7 Customer service order form...................... 28
1 About this manual
The language of the original manual is German. Versions of this manual in all other languages are translations
of the original.
Function of the manual
The manual is a constituent part of the product and enables safe and efficient handling of the product.
Compliance with all the safety instructions specified is a basic prerequisite for safe working.
Storing the manual
Keep the manual for the entire service life of the product and ready to hand at all times.
The manual must be passed on to the new owner when the product is dismantled/reused.
If the manual is lost or destroyed, request a copy from the manufacturer.

For your safety
Installation manual pellettop 3
Classification of warnings
The warnings used in this manual are shown with symbols and signal words. The signal word indicates the level
and nature of the danger and how to avert it.
Dangerous situation for humans! Indicates a hazard with a high degree of risk, which –if not avoided –will cause
death or a serious injury.
Dangerous situation for humans! Indicates a hazard with a low degree of risk, which –if not avoided –could cause
minor or moderate injury.
Dangerous situation for humans! Indicates a hazard with a medium degree of risk, which –if not avoided –could
cause death or a serious injury.
Attention! Risk of property damage. Indicates operations or circumstances which may result in damage to the product.
Note: Indicates information for correct handling of the product.
Symbols and labelling
Bullet point
Precondition for an action
Instruction
Result of an action
Numbering of figures
The numbering can be found below the figures, for example: Fig. 6-3
6-3 stands for the unique identification of the figure and is used in the text if the figure is referenced. The num-
ber 6 stands for the main section of the manual where the figure can be found, the number 3 for the serial num-
ber of the figure within the main section of the manual.
Limitation of liability
SOLARFOCUS GmbH is not liable for personal injury and property damage due to:
Failure to observe the instructions in this manual.
Use of the product for any purpose other than for its intended use.
Deployment of non-qualified personnel.
Use of non-approved spare parts.
Technical modifications to the product by the user.
Copyright
This manual is protected by copyright. Reprinting, translation and reproduction of this manual –in its entirety or
in part –is only permissible with the prior written approval of the manufacturer.
Warranty
See terms and conditions of business and delivery of SOLARFOCUS GmbH.
Contact your heating engineer or the SOLARFOCUS service department for further information.
2 For your safety
Make sure that you read this manual before commissioning the product. Compliance with the instructions in
this manual, particularly the safety instructions, is vital for safe operation.
Safety information
Do not use or store combustible materials in the vicinity of the boiler.
When opening the boiler door, ensure that no flue gas or flying sparks escape. Never leave the boiler door
open and unattended.
The boiler must be switched off before filling the storage room!
Never open the combustion chamber door during operation.
Only touch the designated operating elements (handles) while the boiler is in operation. Other components
(combustion chamber door, flue gas pipe, …) can become very hot – danger of burns!
In the event of damage to the insulation, switch off the power supply immediately and have the insulation
repaired.
Protect live parts against moisture.
Do not allow unauthorised persons, children or animals to enter the boiler room. Persons who are unfamiliar
with the boiler or have received no instruction in its use must not be allowed to operate it.
Use only fuel which meets the prescribed quality standards.
Do not use auxiliary materials to ignite the prescribed fuel.
Have maintenance work performed regularly (contact the SOLARFOCUS GmbH Service Department or an
DAN-
GER
CAUTION
WARNING

For your safety
4 Installation manual pellettop
authorised customer service partner).
If visible damage is ascertained (e.g. leakage of water, thermal deformation, traces of smoke or scorching,
mechanical damage etc.), operation must not be continued or the boiler started up again. The system may
only be operated if it is in perfect technical condition.
If the system is out of operation for lengthy periods, it must be ensured that all parts bearing water are fully
protected against frost.
The system operator is responsible for setting the parameters in the customer menu of the boiler control. As-
delivered condition is always the factory setting, which must be adjusted by the system operator to meet the
individual requirements. The manufacturer cannot be held liable for damage resulting from incorrect adjust-
ment.
The boiler must be operated exclusively in accordance with the planning and installation specifications and
with the relevant regulations, laws and product-specific instructions. The manufacturer accepts no liability for
damage and the consequences of damage resulting from incorrect installation, operation or use of the boiler
or from failure to perform maintenance and cleaning correctly and punctually.
The operator/owner of the system is under obligation to observe the applicable regional guidelines, directives
and laws pertaining to the operation of wood- and pellet-fired combustion systems.
The modification or disabling of safety equipment is strictly prohibited.
The fire, building and electrical engineering requirements and the safety regulations must be complied with in
addition to the instructions in the operation manual and the legal requirements applicable in the country of
use!
Incorrect cleaning and maintenance or failure to perform cleaning and maintenance can lead to serious mal-
functions during combustion and thus cause accidents! Before maintenance work on the boiler: Switch the
boiler off and allow it to cool down!
All checks (service operations), cleaning processes and other events must be entered in an inspection log in
accordance with TRVB H 118.

The minimum effective area of the supply air openings is 200 cm² up to 30 kW, 300 cm² up to 40
kW and 400 cm² up to 60 kW.
Accident prevention regulations
In addition to the instructions contained in this manual, the local accident prevention regulations and the national
industrial safety regulations also apply.
In the event of damage to the insulation, switch off the power supply immediately and have the insulation re-
paired.
Protect live parts against moisture and damp.
Qualification of personnel
The work procedures described must be carried out by qualified specialist personnel.
Work on electrical components must be performed by trained electricians and in accordance with the relevant
laws and directives.

Product description
Installation manual pellettop 5
3 Product description
3.1 Technical specifications
pellettop touch
35
45
49
70
Rated power
[kW]
35
44.9
49
70
Lowest output
[kW]
10.5
13.4
14.7
21
Energy efficiency class
A+
Dimensions
Width (W)
[cm]
55.5
79
Total width including ash contain-
er (B1)
[cm]
94
120
Total depth
[cm]
144
155
Depth without fan (D)
[cm]
134
145
Height incl. adjustable feet [1] (H)
[cm]
156
172
Minimum room height [2]
[cm]
175
195
Weight
Weight
[kg]
554
560
882
Water side
Water content
[l]
58
130
Maximum operating pressure
[bar]
3
Boiler flow/boiler return connec-
tion
["]
External thread 5/4
External thread 6/4
Drain
["]
External thread 1/2
Thermal overload protection
["]
External thread 1/2
Flow rate / differential pressure at
ΔT 10°K
[kg/h]
[hPA]
3000
45
3860
95
4200
50.6
6000
59
Flow rate / differential pressure at
ΔT 20°K
[kg/h]
[hPA]
1500
11
1930
17.5
2100
13
3000
16
Fuel
Fuel
Wood pellets acc. to EN17225-2, ENplus-A1
Capacity of intermediate pellet
store
[l]
95
95
250
250
Flue gas side
Flue gas pipe diameter
[cm]
15
15
20
20
Height flue gas pipe centre[1] (D)
[cm]
46
46
59
59
Flue gas mass flow full load
[g/s]
30
37
40
55
Flue gas mass flow partial load
[g/s]
10
13.5
14
20
Max. flue gas temperature (full
load/partial load) [4]
[°C]
140 / 100
Minimum draught requirement [5]
[Pa]
5
Emissions according to test
report
Flue gas values [6] from test re-
port: Test institute / test report no.
TÜV Austria11-UW-
Wels-EX-212-2
TÜV Austria11-
UWWels-EX-619
TÜV Austria11-
UWWels-EX-212
TÜV Austria11-UW-
Wels-EX-212-1
CO full load
[mg/m³]
10
9.1
8.8
7
CO partial load
[mg/m³]
48
42.6
40.4
29
NOx full load
[mg/m³]
101
103
104
108
NOx partial load
[mg/m³]
102
106.9
109
119
Org. C full load
[mg/m³]
<2
Org. C partial load
[mg/m³]
<2
Dust content full load
[mg/m³]
20
20
20
20
Dust content partial load
[mg/m³]
17
17.6
17.8
19
[1]
Adjustable feet at maximum depth of thread
[2]
The minimum room height is required for maintenance work
[4]
The maximum flue gas temperature can be adjusted electronically
[5]
A draught stabiliser must be fitted if the specified draught of 15 Pa is exceeded (attention: In the case of a boiler with room-sealed
operation, use a room-sealed draught stabiliser)
[6]
Flue gas values in mg/m³ are based on 13% O2 of the volume flow

Product description
6 Installation manual pellettop
3.2 Dimensions and installation dimensions
pellettop 35 / 45 (automatic ash extraction may be mounted on the left or right)
pellettop 49 / 70 (automatic ash extraction may be mounted on the left or right)
ATTENTION: Additional clearance may need to be planned for the fuel delivery system used.
3.3 Scope of delivery
Pos.
Quantity
Name
1
1
Ash container, ash extraction screws,
2 motors, small parts
2
1
Ash scraper
3
1
Ash pan
4
1
Operation manual pellettop
5
1
Transparent bag with 2 x ash pan
handles, 4 x hinge bolt hose clamps,
1 x stainless steel combustion grate,
4 x adjustable feet
Pos.
Quantity
Name
6
1
Transparent bag with external sen-
sor, boiler flow contact sensor, im-
mersion sleeves.
7
1
Gloves
8
1
Boiler
9
1
Installation manual pellettop
Not included in the scope of delivery:
Pellets hose ♦ flue gas pipe parts and connection
material
15*
20*
* Access to the back of the boiler must be provid-
ed (min. 45 cm on the left or right)
* Access to the back of the boiler must be provid-
ed (min. 45 cm on the left or right)

Product description
Installation manual pellettop 7
3.4 Sectional drawing
pellettop 35/45
1
Motors for heat exchanger clean-
ing
2
Lambda sensor
3
Cladding door
4
Operating unit
5
Suction turbine
6
ID fan
7
Flue gas pipe
8
Intermediate pellet store
9
Heat exchanger cleaning
10
Rotary valve and feed auger
11
Ignition device (glow pencil)
12
Stainless steel combustion grate
13
Ash container
14
Combustion chamber
pellettop 49/70
1
Motors for heat exchanger clean-
ing
2
Lambda sensor
3
Cladding door
4
Operating unit
5
Suction turbine
6
ID fan
7
Flue gas pipe
8
Intermediate pellet store
9
Heat exchanger cleaning
10
Rotary valve and feed auger
11
Ignition device (hot air fan)
12
Stainless steel combustion grate
13
Autom. ash extraction (auger)
14
Ash container
15
Combustion chamber
11
12
3
6
9
2
7
5
4
13
10
8
1
5
2
1
3
4
6
7
8
9
10
11
12
14
13
15
14

Transporting of the boiler
8 Installation manual pellettop
4 Transporting of the boiler
Information about boiler weight, 5
4.1 Transport aids
pellettop 35/45/49/70: Recesses 1on one boiler front
and back, 1" pipe inserted, to the back of the boiler.
pellettop 49/70, in addition, from the boiler top 2 x ring
screws M20 1mountable (not included in the scope of delivery)
Fig. 4-1
Fig. 4-2
4.2 Removing the shipping timber
pellettop 35/45
Fig. 4-3
pellettop 49/70
Fig. 4-4
Release hex bolts M16x50 (SW24) and washers 1.
Remove pallets.
Screw in 4 x adjustable feet (SW16).
Remove Torx screws 1and square timber 2.
Screw in 4 x adjustable feet (SW16).

Installation
Installation manual pellettop 9
5 Installation
5.1 Prior to installation
- Installation dimensions 6
- Information about chimney connection, 20
5.2 Installation sequence
5.2.1 Removing the covers
pellettop 35/45
Fig. 5-1
pellettop 49/70
Fig. 5-2
Lift cover 1upwards.
Release 2 x screws 2pull cover 3backwards.
Release 2 x screws 1pull cover 2backwards.
Lift cover 3upwards.
5.2.2 Install automatic ash extraction
Arrangement of the ash container: When starting installation, determine which side of the boiler the ash
container will be mounted on. The cables for the ash extraction auger motors and the cover switch for the ash
container are laid on both sides of the boiler. The following procedure describes the installation of the ash con-
tainer on the left side of the boiler.
Fig. 5-3_Installing the flange plate and motors
Install the flange plate with motors
The flange plate with the motors is in-
stalled on the opposite side of the boiler to the
ash container.
Check: The bayonet lock socket 1of the worm
shaft must point toward flange plate/motors.
Mount seal 2and flange plate 3with 6 x
hex nuts M10 (SW17) and washers 4to the
boiler.
Connect motors electrically (cable is ready
to connect), attach protective earthing ca-
ble on flange plate.

Installation
10 Installation manual pellettop
Fig. 5-4_Fitting the cover
Mount the cover
Mount cover 1with 12 x self-tapping
screws 2.
Fig. 5-5_Fitting the augers
Install the ash extraction augers
Insert the augers 1.
Turn the augers to ensure that the bayonet
lock socket at the end of the auger latches
into the catch on the motor.
Fig. 5-6_Fitting the console and seal
Mount console
Mount console 1and seal 2with 6 x hex
nuts M10 (SW17) and washers 3to the
boiler.

Installation
Installation manual pellettop 11
Fig. 5-7_Fitting the cover and ash container
Mount cover and ash container
Mount two-section cover 1with 12 x self-
tapping screws 2.
Attach ash container 3and secure it with
the two turnbuckles 4.
Fig. 5-8
If necessary: convert ash container safety
switch
Item 1shows the switch assembly when
mounted on the left side of the boiler.
If the switch is mounted on the right side of the
boiler, proceed as follows:
Unscrew the switch from the boiler.
Release screws at switch head 3and turn
head 180 degrees.
Release screws at roller lever 4and turn
head 90 degrees.
Replace the switch on the boiler, position
the parts according to 2.
Connect switch: Use Cand NO (13, 14).
The connection for the ash box safety switch (X48) and the ash transfer screw motor (X16) is pre-wired on
both sides of the boiler. Connect the correct plug (note left/right marking on the cable harness label) to the boil-
er power element.
5.2.3 Connect pellet hose
Fig. 5-9
Applicable to all pellettop boilers.
1= suction (pellets)
2= return air hose
Observe notes on installing hoses,
20

Installation
12 Installation manual pellettop
5.2.4 Boiler-controlled room air damper (optional)
Function: When the burner is running, the output is energised
and the room air damper opens.
► Connect the room air damper to the boiler power element at
X6
(230 V AC).
► For the parameter Reserve relay, select the value Boiler
operation.
The parameter Reserve relay is located in the Service menu
> External boiler.
5.2.5 Flue gas pipe: Make a hole for emission measurement
Make the hole for the emission measurement according to the following images (recommendation according
to standard).
If these specifications cannot be implemented, then make the measuring point after a calming section, i.e.
after the longest straight section of the pipe. The tube orientation (horizontal, vertical, oblique) plays no role
in this case.
In any case, place the measuring point before any existing draught stabiliser.
You can find information about carrying out the emission measurement in the boiler operation manual, keyword:
Chimney sweep function.
Flue gas pipe horizontal
Flue gas pipe vertical

Hydraulic connection
Installation manual pellettop 13
6 Hydraulic connection
6.1 Fill-up water requirements
General recommendations for installation
- Fit an upstream filter (<25 µm) to prevent particles
getting into the heating water.
- Position shut-off valves for each section (in buffer
tank, etc.) in order to minimise heating water loss in
the event of repairs or system extensions.
Corrosion
Corrosion is usually triggered by the available oxygen in
the water. This value can be brought into a safe range
with proper planning, design, installation and mainte-
nance of the heating system.
Important: Pressure maintenance at regular intervals
(system pressure, pressure in the expansion tank)
Formation of scaling
Scaling refers to heating water deposits on the heat
exchanger of the boiler. The cause of scaling is the
presence of limestone in the water. If the value (total
hardness °dH) is too high, the fill-up water must be
treated.
Parameters that play a role in the formation of scaling:
- System volume (the bigger it is, the less total hard-
ness is permissible, e.g. buffer tank fitted, boiler cas-
cade, etc.).
- Boiler output (the bigger it is, the less total hardness
is permissible).
To determine the total allowable hardness for the
system, the specific water content must be deter-
mined:
System volume
(litres)
= Spec. water content of the
system (l/kW)
Boiler output (kW)
Example:
1166
litres
= 46.64 l/kW
25 kW
Overall output of heat supply
German hard-
ness
Specific water content of the system <20 l / kW
≤ 50 kW
≤ 16.8 °dH
> 50 kW to ≤ 200 kW
≤ 11.2 °dH
> 200 kW to ≤ 600 kW
≤ 5.6 °dH
> 600 kW
≤ 2.8 °dH
Specific water content of the system ≥ 20 l/kW, but
< 50 l/kW
≤ 50 kW
≤ 11.2 °dH
> 50 kW to ≤ 200 kW
≤ 5.6 °dH
> 200 kW to ≤ 600 kW
≤ 2.8 °dH
> 600 kW
≤ 0.6 °dH
Specific water content of the system ≥ 50 l/kW
≤ 50 kW
≤ 5.6 °dH
> 50 kW to ≤ 200 kW
≤ 2.8 °dH
> 200 kW
≤ 0.6 °dH
In the event of exceeding the above values, the fill-
up water is to be treated. Recommended action:
Softening (e.g., ion-exchange resin, the same pro-
cedure as for drinking water softening).
Check the pH of the fill-up water
- In the normal case (mixed installation) no
measures are required to influence the pH (con-
trol: value should be in the range of 8.2 to 10).
Exception: If aluminium materials are used in the
heating system, a pH from 8.2 to 8.5 must be met
(pH> 8.5 increased corrosion tendency).
- If the value is significantly less than <8.2 after
filling, then check again after 8-12 weeks
- If there is no increase in value, then add 10 g/m³
trisodium phosphate (Na3PO4) or 5 g/m³ sodium
hydroxide (NaOH).
- Allow 2-4 weeks of operation before further cor-
rections.
Electrical conductivity
Recommendation: Low salt driving (filling with de-
mineralised water), see VDI 2035 sheet 2.
Low salt
Salty
Electrical conductivity
at 25°C
< 100
µS/cm
100 –1500
µS/cm

Compliance with the above mentioned standards / regulations must be ensured by the heating engineer.

Hydraulic connection
14 Installation manual pellettop
6.2 Connections –overview
pellettop touch 35/45
pellettop touch 49/70
1
Boiler flow
2
Boiler return
3
Thermal overload protection
4
Drain
5
Sensor for thermal overload protection
Dimension of connections: Technical specifications, 5
6.3 Thermal overload protection
Fit the thermal overload protection valve before (as seen from the
direction of flow) the heat exchanger (i.e. no water pressure building
up in the heat exchanger).
Cold water
Drain
Temperature sensor
Heat exchanger

Hydraulic connection
Installation manual pellettop 15
6.4 Return flow boosting (RFB)
The return temperature must not be lower than 55°C to prevent flue
gases condensing in the boiler heat exchanger, thereby causing corro-
sion.
A mixer regulated return booster is preferable to a thermally regulated
system. This ensures that the return temperature is maintained reliably
and continuously and monitored by the control, independently of the
heating water flow rate. With mixing valves, it is also possible to exploit
residual heat at the end of a firing phase: When the temperature in the
buffer tank has fallen to lower than that in the boiler, the pumps start up
again, the return mixer opens, and the residual heat from the boiler is
transferred to the buffer.
The installation of a return booster is a guarantee condition of SOLARFOCUS.
During installation, make sure that there is a clearance >20cm between the boiler and the return booster
module (to allow for subsequent replacement of pump components, if necessary).
Connecting mixer regulated return flow boosting
Connection to the power element
Function / connection
X13
Relay output, 2 x 230 V AC
Return booster module mixing valve
Protective earthing
N
Neutral conductor
L1
Mixing valve OPEN: Circuit boiler - buffer is open
L2
Mixing valve CLOSED: Circuit boiler flow –boiler
return is open
X15(4)
Relay output, 1 x 230 V AC
Return booster pump (connector on back of boiler)
X32
Sensor input KTY 81-110 (can be switched to
PT1000)
Return temperature sensor (sensor cable ready for connection,
can be found on the back of the boiler)
Hydraulic switch
A hydraulic switch separates the flows in boiler and heating circuits. If the heating system is operated without a
buffer tank, a hydraulic switch must be installed between flow and return.

Electrical connection
16 Installation manual pellettop
7 Electrical connection
There is a risk of electric shocks when performing work on electrical components of the
product/system! Before carrying out any work on electrical systems, disconnect the product/system from
the power supply and secure it against being switched back on.
7.1 Connections to the boiler power element
Fig. 7-1
Fuel feed
X3
Suction turbine
X14
Suction system: Motor of the
direct extraction auger
X14
Direct extraction: Motor of the
direct extraction auger
Bus
X53
CAN bus; connection to the
display
X54
Connection for RS-485 electron-
ic modules
X55
CAN bus; connection for CAN
bus electronic modules
Heating circuit
X9
Heating circuit pump –HC1 
18
X10
Heating circuit pump –HC2 
18
X11
Heating circuit mixing valve -
HC1
X12
Heating circuit mixing valve -
HC2
X37
Flow temperature sensor - HC2
X38
Flow temperature sensor - HC1
X40
Room sensor - HC2 (optional)
X41
Room sensor - HC1 (optional)
X42
Outside temperature sensor
Boiler
X4
Automatic ignition
X16
Automatic ash extraction
X19
ID fan
X20
Overtemperature reset (OTR)
X23
Feed motor
X24
Heat exchanger cleaning
X26
Primary air solenoid
X27
Ignition supply air holding mag-
net
X30
Upper boiler temperature
X31
Boiler temperature sensor
X32
Return temperature sensor
X33
Feeder temperature sensor
X34
Flue gas temperature sensor
X45
Lambda sensor
X47
Speed measurement ID fan
X48
Front door contact switch, ash
box safety switch
X49
Pellet box filling level sensor
Buffer tank
X7
additional buffer cylinder charg-
ing pump (optional)
X13
Return mixer
X15
Return booster pump
X36
Buffer sensor bottom
X44
Buffer sensor top
Power supply
X1
230 V AC input
X2
230 V AC output
X18
230 V AC output; F8 A fuse)
Other
X6
Spare: 230 V AC output; for
special functions
X21
Safety chain 230 V AC (option-
al); e.g. for emergency off switch
X28
External boiler release (optional)
X29
Fault (optional)
X51
External request (optional)
DHW tank
X8
DHW tank pump
X39
DHW tank sensor
Recirculation control
X5
Recirculation pump
X43
Circulation sensor (optional)
DANGER

Electrical connection
Installation manual pellettop 17
7.2 Power supply for the heating system
A separate power circuit is to be provided in the boiler room / boiler installation room for the heating
system.
Mains connection: 230 V AC / 50 Hz C13 A; Specification for the mains connection cable (e.g. in case
of replacement): cable SIHF-J 3x1.5 mm²
7.3 EMERGENCY OFF switch
An "Emergency OFF" switch must be fitted outside the boiler room –near the boiler room / boiler
installation room ; observe regional building regulations.
7.4 Cable management, covers
Fig. 7-2
- Cable duct 1for sensor lines on the left
side of the boiler.
- Cable duct 2for power lines on the right
side of the boiler.
- Power element cover 3
- Lower cover 4
7.5 System type: Suction system with suction auger
SOLARFOCUS system
5-pin connector, di-
rect extraction motor
Connection X14
on the power
element
PE
PE
N
N
L3
L
L2
TC
L1
TC
Route cable (5x1.5 mm², to be provided on site) from connection cable of the direct extraction motor to the
power element.
Third-party manufacturer system (motor thermal protection integrated)
Route a cable (3x1.5 mm²) from the direct extraction motor to the boiler power
element.
Bridge the two TC terminals on the power element.
Applies e.g. to: Pellet box transfer unit screw; Pellet mole

Electrical connection
18 Installation manual pellettop
7.6 Other connections
External boiler request (X28)
Potential-free relay output for switching an external boiler, for example, an external boiler
receives a release from the SOLARFOCUS boiler control;
connect to X28 on SOLARFOCUS power element.
Attention! The connection is potential-free and has a maximum load of 5A.
Fault (X29)
Potential-free relay output, for example, to switch a warning device (optical/acoustic) upon
occurrence of an operating fault on the boiler;
connect to X29 on the power element.
Attention! The connection is potential-free and has a maximum load of 5A.
External request (X51)
Input, i.e. the SOLARFOCUS boiler can be started by an external control;
connect to X51 on the power element.
Attention! This connection must be potential-free.
Connect the heating circuit pump (X9, X10)
Connect heating circuit pump 1 to power element connector X9 and heating circuit pump 2
to X10.
If required (e.g. in the case of underfloor heating), connect a limiting thermostat.
If a limiting thermostat is not used, the contact must be bridged.
7.7 Internet connection
To connect the boiler control with the Internet, connect the Ethernet port X2 (type RJ45) on the back of the dis-
play with a network router via cable. The connection is required in order to use the following functions:
- mySOLARFOCUS app
- Weatherman function
- IP-VNC (Remote access to the boiler control)
- Sending e-mails
7.8 Types of sensors - overview
Measuring
sleeve
Cable
Sensor type
Art.No.
Use
Colour
Material / finish
Length
15 cm
silver
Stainless steel braid
3 m
PT100
69688
Flue gas temperature sensor (pelletplus, octoplus,
therminator I)
1.6 m
PT100
69681
Flue gas temperature sensor (therminator II 22-30)
2.1 m
PT100
69682
Flue gas temperature sensor (therminator II 36-60,
pellettop, pelletplus )
1 m
PT100
69680
Feed sensor rotary valve (pellettop , octoplus )
13 cm
grey
PVC cable
2 m
PT1000
1622
Flow sensor for fresh water module fast
5 cm
red
Silicone cable
2.1 m
PT100
69687
Feed sensor pellets / wood chips feed
red
Silicone cable
3 m
KTY81-110
69686
Return sensor, boiler temperature sensor, external
boiler sensor
black
PVC cable
3 m
KTY81-110
69095
Tank sensor
PVC cable
5 m
PT1000
69095-1000
Tank sensor
black
PVC cable
5 m
PT1000
69098-1000
Flow sensor
Silicone cable
5 m
KTY81-110
69689
Return sensor pellettop 70
2 cm
grey
PVC twin cable
2 m
PT1000
1621-PT
Tank sensor
white
PVC twin cable
2 m
KTY81-210/B
1621
Tank sensor
red
Silicone cable
2 m
KTY81-210/B
1620
Collector sensor
black
Silicone cable
2 m
PT1000
1620-PT
Collector sensor
2 cm x 1.5 Ø
Contact sen-
sor
black
PVC cable
2 m
KTY81-110
69098
Flow sensor
-
-
to be provided on-site
-
KTY81-110
69096
External sensor; (plastic housing 66x60x39 mm)
-
-
to be provided on-site
-
PT1000
69096-1000
External sensor; (plastic housing 66x60x39 mm)

Electrical connection
Installation manual pellettop 19
7.9 Sensor resistance table
Sensor type
PT 100
PT 1000
KTY 81-110
Tolerance
± 0.7%
± 1%
± 3%
Temperature [°C]
Resistance [Ohms]
Resistance [Ohms]
Resistance [Ohms]
-20
92.16
922
684
-10
96.09
961
747
0
100
1000
815
10
103.9
1039
886
20
107.79
1078
961
25
109.74
1097
1000
30
111.69
1117
1040
40
115.54
1155
1122
50
119.4
1194
1209
60
123.24
1232
1299
70
127.07
1271
1392
80
130.8
1309
1490
100
138.5
1385
1696
120
146.06
1461
1915
140
153.58
1536
2124
150
157.31
1573
2211
160
161.04
-
-
170
164.76
-
-
180
168.46
-
-
190
172.16
-
-
7.10 Electrical fusing
On the power element
Fuse
Rating
Size
Function
F1
T 3.15 A
5x20 mm
Fuse 230V AC: Pre-fuse main transformer
F2
T 125mA
5x20 mm
Fuse 230V AC: Pre-fuse standby transformer
F3
T 10 A
5x20 mm
Fuse 230V AC: Relay outputs
F5
F 8A
5x20 mm
Fuse for X18 (power supply to external modules 230V AC)
F6
F 8A
5x20 mm
Fuse 230V AC: Triac outputs
F7
T 2.5A
5x20 mm
Fuse 12V AC: Heating lambda sensor
F8
T 2.5A
5x20 mm
Fuse 18V AC: Internal electronics for main transformer
F9
T 800mA
5x20 mm
Fuse 18V AC: internal electronics, standby transformer; display supply
F10
T 10 A
5x20 mm
Spare fuse
F11
F 8A
5x20 mm
Spare fuse
F12
F 0.5A
5x20 mm
230 VAC fuse: Relay outputs X26, X27 (and X80)
and X80
Relay outputs X26, X27
and X80
Relay outputs X26, X27
and X80
F13
F 0.5A
5x20 mm
Spare fuse for F12
and X80
Relay outputs X26, X27
and X80
Relay outputs X26, X27
and X80

Initial commissioning
20 Installation manual pellettop
8 Initial commissioning
Initial commissioning of the boiler may only be performed by qualified personnel (SOLARFOCUS service
technician or SOLARFOCUS service partner) (= condition for guarantee / warranty)
System status, according to commissioning checklist for biomass systems, 23
connect the boiler to the mains power supply.
For comfortable, automatic detection of the installed system components (such as heating circuit expansion
module, fresh water module, solar module, automatic diverter for suction heads, etc.), run the Network scan
function, boiler operation manual, section Network scan
Carry out output test heating circuits function.
(for further information on the functions listed: refer to operation manual)
Instruction of system operator
- Explanation for system operator responsible for operation, cleaning, maintenance of the boiler and ancil-
lary equipment.
- In particular, the function of the safety equipment and measures that are necessary to maintain safe op-
eration.
9 Annex
9.1 Connecting the pellet hose
Attention!
Do not kink the hose (observe bending radius of > 30 cm).
The hose is not UV-resistant (routing outdoors is not permissible).
Temperature resistance of the hose < 60°C.
Route hose as straight as possible. To avoid sagging, use the SOLARFOCUS
item support shell made of zinc-plated sheet steel.
The hose must be attached to the floor at several points to prevent it from 'floating'
upwards (in the case of floor-mounting, e.g. suction head).
Observe maximum hose length and delivery height.
Max. hose length
Max. conveying
height
Suction head to diverter for suction heads
10 m
1.0 m
Diverter for suction heads to boiler
20 m
2.5 m
Total delivery path
30 m
3.5 m
Notes on installing hose
Always push the end of the hose onto the pipe connection as far as the stop. The hose will slide on to the
connection pipe better if you apply a little water to the pipe.
Tighten hose clamps firmly. (Detachment of the hose and the intake of false air must be reliably prevented).
Note on electr.
earthing
Cut the required length of hard PVC spiral from the hose (with a cutter).
Adjust cable stripper to thickness of metal strand and remove insulation (as for
electric cables).
Strand is loose inside the hard PVC spiral so that it can easily be removed.
Bend the strand onto the inside of the hose, connect hose.
Attention! The strand and the hose connection pipe/connection nozzles must always be
in conductive electrical contact (scrape off any existing coating).
Note: Only the suction hose has to be earthed at both ends (no earthing required for
return-air hose).
1
1