Froling Turbomat TM 250 User manual

Installation Instructions
Turbomat TM 150 - 250
Translation of the original German installation instructions for technicians
Read and follow the instructions and safety information!
Technical changes, typographical errors and omissions reserved!
M0650314_en | Edition 11/08/2014
Fröling GesmbH | A-4710 Grieskirchen, Industriestraße 12 | www.froeling.com

Table of Contents
1 General 4
2 Safety 5
2.1 Hazard levels of warnings 5
2.2 Qualification of assembly staff 6
2.3 Personal protective equipment for assembly staff 6
2.4 Design Information 6
2.4.1 Notes on standards 6
General standards for heating systems 6
Standards for structural and safety devices 7
Standards for heating water 7
Regulations and standards for permitted fuels 7
2.4.2 Installation and approval of the heating system 7
2.4.3 General information for installation room (boiler room) 8
2.4.4 Requirements for central heating water 8
2.4.5 Notes for using pressure maintenance systems 9
2.4.6 Return lift 10
2.4.7 Use with storage tank 10
2.4.8 Chimney connection/chimney system 10
Draught limiter 11
Boiler data for planning the flue gas system 11
3 Technology 12
3.1 Dimensions 12
3.2 Components and connections 13
3.3 Technical data 14
4 Installation 16
4.1 Transport 16
4.2 Positioning 16
4.3 Temporary storage 16
4.4 Setting up in the boiler room 16
4.4.1 Moving the boiler in the boiler room 16
4.4.2 Minimum space requirements in the boiler room 17
4.5 Installing the boiler 18
4.5.1 General information 18
4.5.2 Bolting together the combustion chamber and heat exchanger 19
4.5.3 Fitting the thermal discharge safety sensor 20
4.5.4 Installing the combustion chamber firebricks 21
4.5.5 Changing over the WOS rods (where necessary) 23
4.5.6 Fitting the insulation base frame 25
4.5.7 Fitting the insulating side panels 27
4.5.8 Fitting the ash cans to the heat exchanger ash removal unit 29
4.5.9 Fitting the heat exchanger ash removal unit with ash screw (optional) 30
4.5.10 Fitting the combustion chamber ash removal unit 34
4.5.11 Fitting the control cabinet 36
4.5.12 Fitting the combustion air fan 37
4.5.13 Fitting the safety temperature limiter, boiler sensor and return sensor. 38
Table of Contents
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4.5.14 Fitting the door contact switch 39
4.5.15 Fitting the WOS Drive 40
4.5.16 Installing the grate drive 41
4.5.17 Installing the stoker unit 42
4.5.18 Installing the induced draught fan 43
4.5.19 Fitting the primary and secondary air servo motors 45
4.5.20 Fitting the cover on the slide-on duct 46
4.5.21 Installing the underpressure controller 47
4.5.22 Installing the automatic ignition 47
4.5.23 Installing the combustion chamber overpressure and temperature sensors 48
4.5.24 Fitting the temperature sensor under the moving grate 49
4.5.25 Fitting the broad band probe and flue gas sensor 49
4.5.26 Assembling the FGR (optional) 50
4.5.27 Fitting the covers to the back of the heat exchanger 53
4.5.28 Fitting the insulated doors and the ash container to the combustion chamber 54
4.6 Power connection and wiring 55
4.6.1 Potential equalisation 55
4.6.2 Fitting the insulation cover and the cover plate 56
4.7 Connecting up thermal discharge safety sensor connection 57
4.8 Connecting up the slide-on duct cooling 58
4.9 Final installation steps 59
4.9.1 Setting and testing the seal on the combustion chamber doors 59
Checking the settings of the door stop 59
Checking the settings of the door handle 59
Checking the door stop seal 60
Checking the door handle seal 60
4.9.2 Adjusting the combustion chamber doors 61
Door stop side 61
Door handles 61
5 Commissioning 62
5.1 Before commissioning / configuring the boiler 62
5.2 Initial startup 63
5.2.1 Permitted fuels 63
Wood chips 63
Wood pellets 63
Wood shavings 63
Miscanthus 64
Changing the fuel 64
5.2.2 Non-permitted fuels 64
5.3 Heating up for the first time 65
6 Decommissioning 66
6.1 Out of service for long periods 66
6.2 Disassembly 66
6.3 Disposal 66
7 Appendix 67
7.1 Addresses 67
7.1.1 Address of manufacturer 67
7.1.2 Address of the installer 67
Table of Contents
Installation Instructions | M0650314_en 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 guide‐
lines.
Please read and observe the documentation provided and always keep it close to the
system for reference. Observing the requirements and safety information in the docu‐
mentation makes a significant contribution to safe, appropriate, environmentally friend‐
ly and economical operation of the system.
The constant further development of our products means that there may be minor dif‐
ferences from the pictures and content. If you discover any errors, please let us know:
[email protected].
Subject to technical change.
The EC Declaration of Conformity is only valid in conjunction with a delivery certificate,
which has been filled in correctly and signed as part of the commissioning process.
The original document remains at the installation site. Commissioning installers or
heating engineers are requested to return a copy of the delivery certificate together
with the guarantee card to Froling. On commissioning by FROLING Customer Service
the validity of the delivery certificate will be noted on the customer service record.
Issuing a delivery cer‐
tificate
1General
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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 or damage to property.
Safety 2
Hazard levels of warnings
Installation Instructions | M0650314_en 5

2.2 Qualification of assembly staff
CAUTION
Assembly and installation by untrained personnel:
Risk of personal injury and damage to property.
During assembly and installation:
❒ Observe the instructions and information in the manuals
❒ Only allow trained staff to carry out assembly and installation
Assembly, installation, initial startup and servicing must always be carried out by quali‐
fied personnel:
- Heating technician / building technician
- Electrical installation technician
- Froling customer services
The assembly staff must have read and understood the instructions in the documenta‐
tion.
2.3 Personal protective equipment for assembly staff
You must ensure that staff have the protective equipment specified by accident pre‐
vention regulations.
▪ For transportation, setup and assembly:
- suitable workwear
- protective gloves
- sturdy shoes
2.4 Design Information
2.4.1 Notes on standards
The system must be installed and commissioned in accordance with the local fire and
building regulations. The following standards and regulations should always be ob‐
served:
General standards for heating systems
EN 303-5 Boilers for solid fuels, manually and automatically fed combus‐
tion systems, nominal heat output up to 500 kW
EN 12828 Heating systems in buildings - design of water-based heating
systems
EN 13384-1 Chimneys - Thermal and fluid dynamic calculation methods
Part 1: Chimneys serving one appliance
2Safety
Qualification of assembly staff
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ÖNORM M 7510-1 Guidelines for checking central heating systems
Part 1: General requirements and one-off inspections
ÖNORM M 7510-4 Guidelines for checking central heating systems
Part 4: Simple check for heating plants for solid fuels
Standards for structural and safety devices
ÖNORM H 5170 Heating installation - Requirements for construction and safety
engineering, as well as fire prevention and environmental pro‐
tection
TRVB H 118 Technical directives for fire protection/prevention (Austria)
Standards for heating water
ÖNORM H 5195-1 Prevention of damage by corrosion and scale formation in
closed warm water heating systems at operating temperatures
up to 100 °C (Austria)
VDI 2035 Prevention of damage in water heating systems (Germany)
SWKI 97-1 Water quality for heating, steam, cooling and air conditioning
systems (Switzerland)
D.P.R. n° 412 Regulations for the planning, installation, running/operation and
maintenance of heating systems in buildings to reduce energy
consumption with reference to Article 4, Comma 4 of the Legis‐
lative Decree of 9 January 1991, No. 10 (Italy)
Regulations and standards for permitted fuels
1. BImSchV First Order for the implementation of the Federal Law on emis‐
sion protection (Ordinance on Small and Medium Combustion
Plants) in the version published on 26 January 2010,
BGBl. JG 2010 Part I No. 4.
EN 14961-2 Solid bio-fuel - Fuel specifications and classes
Part 2: Wood pellets for non-industrial use
EN 14961-4 Solid bio-fuel - Fuel specifications and classes
Part 2: Wood chips for non-industrial use
2.4.2 Installation and approval of the heating system
The boiler should be operated in a closed heating system. The following standards
govern the installation:
ÖNORM / DIN EN 12828 Heating Systems in Buildings
NOTICE! Each heating system must be officially approved.
The appropriate supervisory authority (inspection agency) must always be informed
when installing or modifying a heating system, and authorisation must be obtained
from the building authorities:
Note on standards
Safety 2
Design Information
Installation Instructions | M0650314_en 7

Austria: report to the construction authorities of the community or magistrate
Germany: report new installations to an approved chimney sweep / the building au‐
thorities.
2.4.3 General information for installation room (boiler room)
Boiler room characteristics
▪ There must not be a potentially explosive atmosphere in the boiler room as the
boiler is not suitable for use in potentially explosive environments.
▪ The boiler room must be frost-free.
▪ The boiler does not provide any light, so the customer must provide sufficient light‐
ing in the boiler room in accordance with national workplace design regulations.
▪ When using the boiler over 2000 metres above sea level you should consult the
manufacturer.
▪ Danger of fire due to flammable materials.
No flammable materials should be stored near the boiler. Flammable objects (e.g.
clothing) must not be put on the boiler to dry.
▪ Damage due to impurities in combustion air.
Do not use any solvents or cleaning agents containing chlorine in the room where
the boiler is installed.
▪ Keep the air suction opening of the boiler free from dust.
Ventilation of the boiler room
Ventilation air for the boiler room should be taken from and expelled directly outside,
and the openings and air ducts should be designed to prevent weather conditions (foli‐
age, snowdrifts, etc.) from obstructing the air flow.
Unless otherwise specified in the applicable building regulations for the boiler room,
the following standards apply to the design and dimensions of the air ducts:
ÖNORM H 5170 - Construction and fire protection requirements
TRVB H118 - Technical directives on fire protection/prevention
2.4.4 Requirements for central heating water
The following standards and guidelines apply:
Austria:
Germany:
Switzerland:
Italy:
ÖNORM H 5195-1
VDI 2035
SWKI 97-1
D.P.R. no. 412
NOTICE! Note on filling with make-up water: always bleed the filling hose before con‐
necting, in order to prevent air from entering the system.
Note on standards
Note on standards
2Safety
Design Information
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Observe the standards and also follow the recommendations below:
❒Max. cumulative value for alkaline earth: 1.0 mmol/l or 100 mg/l (corresponds to
5.6 dH)
❒ Use softened water as the make-up water
❒ Avoid leaks and use a closed heating system to maintain water quality during op‐
eration
2.4.5 Notes for using pressure maintenance systems
Pressure maintenance systems in hot-water heating systems keep the required pres‐
sure within predefined limits and balance out volume variations caused by changes in
the hot-water temperature. Two main systems are used:
Compressor-controlled pressure maintenance
In compressor-controlled pressure maintenance units, a variable air cushion in the ex‐
pansion tank is responsible for volume compensation and pressure maintenance. If
the pressure is too low, the compressor pumps air into the tank. If the pressure is too
high, air is released by means of a solenoid valve. The systems are built solely with
closed-diaphragm expansion tanks to prevent the damaging introduction of oxygen in‐
to the heating water.
Pump-controlled pressure maintenance
A pump-controlled pressure maintenance unit essentially consists of a pressure-main‐
tenance pump, relief valve and an unpressurised receiving tank. The valve releases
hot water into the receiving tank if the pressure is too high. If the pressure drops below
a preset value, the pump draws water from the receiving tank and feeds it back into
the heating system. Pump-controlled pressure maintenance systems with open expan‐
sion tanks (e.g. without a diaphragm) introduce ambient oxygen via the surface of the
water, exposing the connected system components to the risk of corrosion. These
systems offer no oxygen removal for the purposes of corrosion control as required by
VDI 2035 and in the interests of corrosion protection should not be used.
Safety 2
Design Information
Installation Instructions | M0650314_en 9

2.4.6 Return lift
If the hot water return is below the minimum return temperature, some of the hot water
outfeed will be mixed in.
CAUTION
Risk of dropping below dew point/condensation formation if operated without re‐
turn temperature control.
Condensation water forms an aggressive condensate when combined with com‐
bustion residue, leading to damage to the boiler.
Take the following precautions:
❒ Regulations stipulate the use of a return temperature control.
➥The minimum return temperature is 65 °C. We recommend fitting some
sort of control device (e.g. thermometer).
2.4.7 Use with storage tank
NOTICE
In principle it is not necessary to use a storage tank for the system to run smooth‐
ly. However, we recommend that you use the system with a storage tank, as this
ensures a continuous supply of fuel in the ideal output range of the boiler.
For the correct dimensions of the storage tank and the line insulation (in accordance
with ÖNORM M 7510 or guideline UZ37) please consult your installer or Froling.
⇨ See "Addresses" [page 67]
2.4.8 Chimney connection/chimney system
EN 303-5 specifies that the entire flue gas system must be designed to prevent, wher‐
ever possible, damage caused by seepage, insufficient feed pressure and condensa‐
tion. Please note in this respect that flue gas temperatures lower than 160K above
room temperature can occur in the permitted operating range of the boiler.
The flue gas temperatures (for clean systems) and additional flue gas values can be
found in the table below.
The connection between the boiler and the chimney system should be as short as
possible. The upward angle of the connection should not exceed 30° - 45°. Insulate
the connection. The entire flue gas system - chimney and connection - should be cal‐
culated in accordance with EN 13384-1.
Local regulations and other statutory regulations also apply.
2Safety
Design Information
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NOTICE! The chimney must be authorised by a smoke trap sweeper or chimney
sweep.
Draught limiter
We generally recommend the installation of a draught limiter. A draught limiter must
be installed if the maximum permissible feed pressure as given in the boiler data for
planning the flue gas system is exceeded.
NOTICE! Install the draught limiter directly under the mouth of the flue line, as the
pressure is constantly low at this point.
Boiler data for planning the flue gas system
Description TM 150 TM 200 TM 250
Flue gas temperature at nominal load °C 150 150 150
Flue gas temperature at partial load 110 110 110
Flue gas mass flow with wood chip W30,
13% O2
m3/h
(kg/h)
807 (665) 1071 (882) 1346 (1108)
Flue gas mass flow with wood chip W30,
9% O2
511 (420) 648 (557) 852 (700)
Flue gas mass flow with wood pellets 13%
O2
673 (559) 893 (741) 1121 (931)
Flue gas mass flow with wood pellets 9%
O2
426 (355) 566 (471) 711 (591)
Required feed pressure at outlet of induced
draught housing at nominal load
Pa 2 2 2
mbar 0.02 0.02 0.02
Required feed pressure at outlet of induced
draught housing at partial load
Pa 5 5 5
mbar 0.05 0.05 0.05
Maximum permissible feed pressure Pa 50 50 50
mbar 0.5 0.5 0.5
Flue gas pipe diameter mm 200 250 250
Safety 2
Design Information
Installation Instructions | M0650314_en 11

3 Technology
3.1 Dimensions
Posi‐
tion
Description Unit TM 150 TM 200 TM 250
H1 Boiler height including insulation mm 1880 1880 1880
H2 Height, flow/return connection mm 1935 1935 1935
H3 Height of stoker including burn back protection system mm 790 850 850
H4 Height, flue gas pipe connection without FGR mm 770 1080 1080
H5 Height, flue gas pipe connection with FGR mm 1105 1080 1080
BTotal width including fittings mm 2170 2180 2180
B1 Width, boiler including insulation mm 1870 1930 1930
B2 Width, ash trolley mm 870 870 870
LTotal length including fittings mm 2630 2860 2860
L1 Length, combustion chamber without insulation mm 1720 1880 1880
L2 Length, stoker unit mm 940 970 970
L3 Length, ash container mm 600 600 600
L4 Length, heat exchanger without insulation mm 790 950 950
3Technology
Dimensions
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3.2 Components and connections
E
Posi‐
tion
Description Unit TM 150 TM 200 TM 250
ABoiler return connection Inches 2½ 2½ 2½
BBoiler flow connection Inches 2½ 2½ 2½
CThermal discharge safety sensor connection Inches ½ ½ ½
DFlue gas pipe connection without FGR (flue gas recircula‐
tion)
mm 200 250 250
EFlue gas pipe connection with FGR (flue gas recirculation) mm 150 150 150
FBroadband probe connection Inches 3/4 3/4 3/4
FFlue gas temperature sensor connection Inches 1/2 1/2 1/2
Technology 3
Components and connections
Installation Instructions | M0650314_en 13

3.3 Technical data
Description TM
150 200 250
Nominal heat output kW 150 199 250
Heat output range kW 45 – 150 59 - 199 75 – 250
Electrical connection 400V / 50Hz / fuse protection C35A
Power consumption (pellets, wood chip) W 545 / 657 578 / 659 612 / 660
Total weight including fittings kg 3300 3820 3820
Weight - combustion chamber 1150 1290 1290
Weight - heat exchanger 1000 1280 1280
Heat exchanger water capacity l 440 570 570
Water pressure drop (ΔT = 10 / 20 K) mbar 36 / 12 55 / 18 74 / 25
Minimum boiler return temperature °C 65
Maximum permitted operating temperature °C 90
Permitted operating pressure bar 3
Permitted fuel as per EN 14961 1) Part 2: Wood pellets class A1 / D06
Part 4: Wood chips class A2 / P16A-P45A
Airborne sound level dB(A) < 70
1.Detailed information on the fuel is included in the operating instructions, in the section on “Permitted fuels”
150 200 250
Accredited Technical Inspection Association TÜV 1) TÜV 2) 3) TÜV 1)
Test report no. 13-UW/Wels-
EX-033
14-U-187/SD 13-UW/Wels-
EX-308
Boiler class as per EN 303-5:2012 5 5 5
1.TÜV Austria Services GmbH, Geschäftsbereich Umweltschutz, Am Thalbach 15, A-4600 Thalheim/Wels
2.As per EN 303-5, Section 5.1.3 Type test: For a boiler from a range with the same constructional characteristics it is sufficient, if the ratio of nominal heat output from the largest to the
smallest boiler is ≤ 2:1, to perform the tests with the smallest and the largest boilers. The boiler manufacturer must ensure that all boilers, including those that have not been tested in
the range, whose values have been determined depending on the rated heat output by interpolation, fulfil the requirements of the standard.
3.Values for the Type TM 200 are between those for the TM 150 and the TM 250 as certified in test reports 13-UW/Wels-EX-033 and 13-UW/Wels-EX-308.
Test data for wood chips - emissions in [mg/MJ] (nominal load/partial load)
Carbon monoxide (CO) mg/MJ 2 / 50 5 / 54 8 / 58
Nitrogen oxide (NOx) mg/MJ 82 / 79 87 / 78 92 / 76
Organic hydrocarbons (OGC) mg/MJ <1 / <2 <1 / <2 <1 / <2
Dust mg/MJ 9 / 17 9 / 18 9 / 19
Boiler efficiency % 91.6 / 90.6 92.4 / 91.1 93.3 / 91.6
Test data for wood chips - emissions in [mg/m³]1) (nominal load/partial load)
Carbon monoxide (CO) mg/m³ 2 / 73 6 / 79 11 / 85
Nitrogen oxide (NOx) mg/m³ 120 / 116 127 / 114 135 / 111
Organic hydrocarbons (OGC) mg/m³ <1 / <2 <1 / <2 <1 / <2
Dust mg/m³ 13 / 24 13 / 25 14 / 27
Boiler efficiency % 91.6 / 90.6 92.4 / 91.1 93.3 / 91.6
1.Emissions values based on dry flue gas at standard temperature and pressure (0°C, 1013 mbar) with a volume content of oxygen of 13%
3Technology
Technical data
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Test data for pellets - emissions in [mg/MJ] (nominal load/partial load)
Carbon monoxide (CO) mg/MJ 12 / 73 9 / 79 6 / 86
Nitrogen oxide (NOx) mg/MJ 67 / 53 63 / 53 59 / 53
Organic hydrocarbons (OGC) mg/MJ <1 / <2 <1 / <2 <1 / 1.0
Dust mg/MJ 9 / 10 8 / 11 6 / 13
Boiler efficiency % 93.4 / 91.2 93.7 / 91.4 94.1 / 91.7
Test data for pellets - Emissions in [mg/m³]1) (nominal load/partial load)
Carbon monoxide (CO) mg/m³ 13 / 107 11 / 117 9 / 127
Nitrogen oxide (NOx) mg/m³ 99 / 77 93 / 77 86 / 78
Organic hydrocarbons (OGC) mg/m³ <2 / <2 <2 / <2 <2 / 1.5
Dust mg/m³ 13 / 14 11 / 16 8 / 19
Boiler efficiency % 93.4 / 91.2 93.7 / 91.4 94.1 / 91.7
1.Emissions values based on dry flue gas at standard temperature and pressure (0°C, 1013 mbar) with a volume content of oxygen of 13%
Technology 3
Technical data
Installation Instructions | M0650314_en 15

4 Installation
4.1 Transport
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
❒ Unloading, positioning and installation should only be performed by trained
professionals! Staff must be trained in techniques for moving heavy loads
(correct tools and lifting equipment, hooking and slinging points, etc.)
4.2 Positioning
❒ Secure the slings or chains to the hooking point securely and position the boiler
4.3 Temporary storage
If the system is to be assembled at a later stage:
❒Store components at a protected location, which is dry and free from dust
➥Damp conditions and frost can damage components, particularly electric ones!
4.4 Setting up in the boiler room
4.4.1 Moving the boiler in the boiler room
❒ Position a fork-lift or similar lifting device with a suitable load-bearing capacity at
the base frame
❒Lift and transport to the intended position in the installation room
➥Observe the minimum distances in the boiler room.
4Installation
Transport
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4.4.2 Minimum space requirements in the boiler room
▪ The system should generally be set up so that it is accessible from all sides allow‐
ing quick and easy maintenance.
▪Regional regulations regarding necessary maintenance areas for inspecting the
chimney should be observed in addition to the specified minimum distances!
▪ Observe the applicable standards and regulations when setting up the system.
▪ Observe additional standards for noise protection
(ÖNORM H 5190 - Noise protection measures)
A
B
D
C
Posi‐
tion
Description Unit TM 150-250
ADistance between stoker and wall mm 400
BDistance between side of boiler (heat exchanger) and wall 300
CDistance between insulated door and wall 800
DDistance between side of boiler (combustion chamber) and wall 400
Installation 4
Setting up in the boiler room
Installation Instructions | M0650314_en 17

4.5 Installing the boiler
NOTICE
Reduction in performance due to air leakage
The use of flanges without sealing cords can result in a reduction in performance
due to air leakage
Therefore:
❒ Sealing cords or the surface sealant provided must be used on all the flanged
connections on the following components: loading; ash removal; pressure
ducting; air ducts; combustion air fan; flue gas and flue gas return piping.
4.5.1 General information
Front and back of boiler
The front of the boiler is its operating side. All of the operating controls for the combus‐
tion chamber door, ash can, control cabinet and other components are on the front of
the unit.
The back of the boiler is opposite the front The stoker unit, EOS drive and complete
flue gas system are on the back of the boiler.
Heat exchanger on the left or right
The heat exchanger of the Turbomat can be on the left or the right (when seen from
the front, operator side) of the combustion chamber. Before you start installation,
check if the heat exchanger is to be installed on the left or the right. In some cases this
is already indicated on the layout drawing.
Version: Heat exchanger left Version: Heat exchanger right
1Combustion chamber 2Heat exchanger
4Installation
Installing the boiler
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NOTICE! The figures below show the instructions for installing a heat exchanger to the
right of the combustion chamber. If the heat exchanger is to be installed to the left, the
steps should be carried out in the same way but on the other side.
4.5.2 Bolting together the combustion chamber and heat exchanger
Positioning the combustion chamber
❒ Position the fork-lift under the combustion chamber from the side. Raise the com‐
bustion chamber just enough so that it can be positioned in the the heat exchang‐
er without colliding.
❒ Push the combustion chamber fully home into the side of the heat exchanger and
then slowly lower it into position.
Aligning and fixing the combustion chamber
Align the combustion chamber before you fix it to the heat exchanger. Align it with the
two referencing stops.
Referencing stop on the heat exchanger Referencing stop on the base frame
Installation 4
Installing the boiler
Installation Instructions | M0650314_en 19

After positioning the combustion chamber in the heat exchanger:
❒ Working through the openings in the base frame, insert and tighten the clamping
screws until the combustion chamber is tight against the heat exchanger.
➥Check that the combustion chamber is aligned flush with the heat exchanger
and that the seal cord is lying evenly.
❒ On the back of the combustion chamber, remove the blanking plugs for combus‐
tion chamber overpressure sensor, the combustion chamber temperature sensor,
the automatic ignition and the underpressure controller.
❒On the back of the combustion chamber, remove the support.
4.5.3 Fitting the thermal discharge safety sensor
❒ On the back of the heat exchanger, remove the blanking plug (1).
❒Seal the immersion sleeve (2) and screw it into the heat exchanger.
❒ Push the thermal discharge safety sensor (3) into the immersion sleeve (2).
❒ Push the protective tube over the thermal discharge safety sensor and then slight‐
ly tighten the fixing screw (4).
4Installation
Installing the boiler
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