HDG Navora 20 Operation Manual Download

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7 Cleaning and servicing the heating system – Procedure

LEANING

TOOLS

1 Brush handle

2 Cleaning brush

3 Scraper

4 Ash shovel

5 Wall holder

LEAN

THE

FUEL

CHAMBER

AND

SECONDARY

AIR

OPENINGS

Allow the fire in the boiler to burn out and cool off.

Press the

Reload

button.

✓

On the display of the control unit, the following message appears:

“DO NOT OPEN! Please wait”

✓

The flue gas fan starts to run.

Wait for approx. 15 seconds until the “

Open filling hatch

”

message appears.

✓

On the display of the control unit, the following message appears:
“

Open filling hatch

”.

Important!

Before beginning cleaning and maintenance work, the message
“

Boiler OFF

” must appear on the display of the HDG Lambda

Control 1 plus/2 plus control unit, in other words, the display

Boiler

may not be lit.

✎

See the chapter entitled “6 Using the heating system”, section
“6.1 Overview of the controls and display components”.

Figure 7/1 - Cleaning tools

Important!

✎

Observe the “Generally applicable safety instructions” in this
section.

Summary of Contents for Navora 20

Page 1: ...hdg bavaria com HDG Navora 20 25 30 HDG Navora 40 45 50 Operation Manual ...

Page 2: ......

Page 3: ...0 14 Cross section HDG Navora 20 25 30 15 Rear and side views HDG Navora 20 25 30 16 Front view HDG Navora 40 45 50 17 Cross section HDG Navora 40 45 50 18 Rear and side views HDG Navora 40 45 50 19 3 2 Functional description 20 HDG Navora boiler 20 HDG Lambda Control 1 plus 2 plus 21 3 3 Technical data 22 3 4 Fuel quality requirements 24 Permissible fuel 24 Recommended fuel 25 4 Planning and inst...

Page 4: ...ying information 46 6 5 Entering user settings 47 Requirements 47 Fuel selection 47 6 6 Heating up the heating system 47 6 7 Performing the chimney sweep test 51 Before the test 51 On the day of the test 51 During the test 52 6 8 Switching off the heating system for maintenance or repair work 53 6 9 Troubleshooting 53 7 Cleaning and servicing the heating system 54 7 1 Cleaning and maintenance sche...

Page 5: ...ean control unit 68 8 Notes on dismantling and disposal 69 8 1 Dismantling 69 8 2 Disposal 70 9 Warranty 71 9 1 Scope 71 9 2 Conditions 71 9 3 Warranty exclusions 71 10 Appendix 72 10 1 HDG Navora plug board 72 10 2 Circuit diagram 73 10 3 Declaration of Conformity 74 11 Index 75 ...

Page 6: ... develop and improve our boilers The information in this edition was correct at the time of going to press We reserve the right to make changes which may then differ from the technical details and illustrations in this Operating Manual COPYRIGHT Written permission is required from HDG Bavaria GmbH for reprinting storage in a data processing system or transmission by electronic mechanical photograp...

Page 7: ...ning and installation how to properly plan and install the heating system 5 Commissioning the system how the heating system is put into initial service 6 Using the heating system how to properly operate the heating system 7 Cleaning and servicing the heating system how to clean the heating system and who is responsible for its maintenance 8 Notes on dismantling and disposal what has to be consider...

Page 8: ...ygen levels in the flue gas Reload signal Electrical signal in the form of an LED on the Lambda Control panel which serves as a prompt to reload the fuel chamber Flue gas fan Creates a vacuum inside the boiler and provides the boiler with air for combustion Sensor Monitors certain parameters e g temperature and sends them to the control system for analysis Safety temperature limiter An automatic d...

Page 9: ...G Navora boiler The further implementation of applicable standards and guidelines for example regarding installation of the heating system pipework etc is not part of this operating manual HDG Bavaria does not assume any liability for this PROPER AND IMPROPER OPERATION PURPOSE OF THE HEATING SYSTEM The HDG Navora boiler is designed for the standard operation of burning untreated wood for example i...

Page 10: ... Only open them when the boiler has finished burning Do not leave them open any longer than necessary and never leave them open unattended Warning Danger of fire When the heating system is in operation open doors and lids constitute a fire hazard Furthermore combustion residue ash charcoal etc can reignite after being removed from the boiler Always keep the doors and lids closed Only open them whe...

Page 11: ...lectric shock Work on the live components may only be carried out by a qualified electrician Make sure the system is disconnected from the mains and prevented from being switched on again Warning The boiler is under pressure Danger Dangerous electrical current or voltage Work in areas marked with this symbol may only be performed by a qualified electrician Warning Hazardous area Working in areas m...

Page 12: ... of carbon monoxide Warning Automatic start up Working in areas marked with this symbol can lead to injuries due to automatic start up Danger Danger of explosion A concentration of carbon monoxide that is too high can result in an explosion Important Danger from suspended loads Working in areas with this symbol may involve danger from falling objects Important Frost danger Only install the heating...

Page 13: ...tem must read the Operating Manual prior to beginning work particularly the chapter 2 Safety instructions This is especially important for persons who only occasionally work on the heating system for example when cleaning or servicing it The Operating Manual must always be kept readily accessible at the place where heating system is installed ...

Page 14: ... 1 plus 2 plus 2 Actuating handle cleaning system flue gas flap 3 Fuel chamber door 4 Actuator primary air 5 Actuator secondary air 6 Combustion chamber door 7 Ash pan 8 Immersion sleeve cover cap for return temperature sensor 9 Lower inside door 10 Upper inside door Figure 3 1 Front view HDG Navora 20 25 30 6 9 3 2 1 8 7 4 5 10 ...

Page 15: ...changer 3 Flue gas flap 4 Cleaning turbulators 5 Tubular heat exchanger 6 Rear combustion chamber panels 7 Nozzle brick 8 Secondary combustion chamber 9 Ash compartment 10 Burner nozzle 11 Side combustion chamber panels 12 Plug board Figure 3 2 Cross section HDG Navora 20 25 30 8 2 1 3 7 4 11 5 6 12 10 9 ...

Page 16: ...de thread 6 Filling draining connection DN 25 inside thread 7 Flue gas temperature sensor 8 Immersion sleeve cover cap for boiler temperature and STL sensor 9 Safety heat exchanger outlet DN 15 outside thread 10 Safety heat exchanger inlet DN 15 male 11 Connection of immersion sleeve for thermal safety device DN 15 inside thread Figure 3 3 Rear and side views HDG Navora 20 25 30 2 6 5 4 3 8 1 11 7...

Page 17: ...trol 1 plus 2 plus 2 Flue gas flap actuating handle 3 Fuel chamber door 4 Actuator primary air 5 Actuator secondary air 6 Combustion chamber door 7 Ash pan 8 Lower inside door 9 Upper inside door 10 Cleaning system actuating handle Figure 3 4 Front view HDG Navora 40 45 50 6 8 3 2 1 9 7 4 5 10 ...

Page 18: ...lue gas flap 3 Cleaning turbulators 4 Tubular heat exchanger 5 Rear combustion chamber panels 6 Nozzle brick 7 Secondary combustion chamber 8 Ash compartment 9 Burner nozzle 10 Side combustion chamber panels 11 Plug board Figure 3 5 Cross section HDG Navora 40 45 50 7 1 2 6 3 10 4 5 11 8 9 4 ...

Page 19: ...sensor 4 Return connection DN 32 inside thread 5 Filling draining connection DN 25 inside thread 6 Flue pipe connection 150 mm 7 Safety heat exchanger outlet DN 15 outside thread 8 Safety heat exchanger inlet DN 15 male 9 Supply connection DN 32 inside thread Figure 3 6 Rear and side views HDG Navora 40 45 50 1 5 4 3 2 8 7 6 9 ...

Page 20: ...bustion chamber 5 where it is burnt off Ashes are collected in the large ash compartments 4 for combustion ash and fly ash The air necessary for combustion is supplied as required via the suction fan 8 and two actuators with metering mechanisms 3 The lambda sensor 7 the boiler temperature sensor and the flue gas temperature sensor 6 are used to do the following Continuously monitor the firing Adju...

Page 21: ...ra boiler and the HDG Lambda Control 1 plus 2 plus system are harmonised with one another and form a functional unit This enables wood to be converted into heat energy in an environmentally sound and convenient manner HDG LAMBDA CONTROL 1 PLUS 2 PLUS The HDG Lambda Control 1 plus 2 plus control unit is the electronic hub of the boiler Using the control unit you can regulate the HDG Lambda Control ...

Page 22: ...wer Minimum thermal power 120 C 120 C 150 C 120 C 180 C 120 C Flue gas mass flow at Nominal thermal power Minimum thermal power 0 0140 kg s 0 0140 kg s 0 0155 kg s 0 0140 kg s 0 0170 kg s 0 0140 kg s CO2 content at nominal thermal power 14 CO2 content at lowest thermal power 13 Flue draught requirement Pw 9 Pa Diameter of flue pipe connection 150 mm Height at middle of flue pipe connection 900 mm ...

Page 23: ... Minimum thermal power 160 C 140 C 170 C 140 C 180 C 140 C Flue gas mass flow at Nominal thermal power Minimum thermal power 0 0230 kg s 0 0230 kg s 0 0256 kg s 0 0230 kg s 0 0290 kg s 0 0230 kg s CO2 content at nominal thermal power 16 15 2 16 CO2 content at lowest thermal power 15 Flue draught requirement Pw 9 Pa Diameter of flue pipe connection 150 mm Height of flue gas pipe connection 955 mm W...

Page 24: ...st be split at least once so as to provide an optimal surface for gasifying the wood The major proportion of the firewood should measure between 8 and 12 cm in diameter WATER CONTENT When selecting fuel note that the calorific value of the wood is primarily dependent on the water content The more water contained in the wood the smaller the calorific value since the water vaporises in the course of...

Page 25: ...t be less than 4 kWh kg RECOMMENDED FUEL HDG recommends log wood with a length of L50 50 cm a maximum diameter of D15 10 15 cm and a water content of M20 20 For kindling we recommend log wood with a diameter of D5 2 5 cm Water content Moisture Calorific value Relative wood consumption 10 0 11 1 4 6 kWh kg 87 20 0 25 0 4 0 kWh kg 100 26 0 35 0 3 7 kWh kg 110 30 0 42 9 3 4 kWh kg 120 Table 3 3 Calor...

Page 26: ...50 A Supply connection height 1405 mm 1460 mm B Width of boiler 634 mm 734 mm C Return connection height 382 mm 435 mm D Height at middle of flue pipe connection 900 mm 955 mm E Boiler height 1532 mm 1591 mm F Total length with opened fuel chamber door 1715 mm 1806 mm G Boiler length 1031 mm 1086 mm H Flue gas fan overhang 206 mm 242 mm I Diameter of flue gas pipe connection 150 mm 150 mm Table 4 ...

Page 27: ...d in accordance with the specifications of HDG Bavaria GmbH and that the minimum spacing requirements are observed Also note that the thresholds in DIN 4109 Soundproofing in building construction may not be exceeded More detailed information can be found in the relevant local and national regulations We recommend that objects which are not needed for the operation or maintenance of the heating sys...

Page 28: ...mm at least 750 mm B at least 100 or 600 mm at least 200 or 600 mm C at least 600 or 100 mm at least 600 or 200 mm D 1300 mm 1360 mm E 1715 mm 1806 mm F at least 2400 mm at least 2800 mm G at least 1350 mm at least 1450 mm H at least 700 mm at least 750 mm Minimum ceiling height 1800 mm 1900 mm Recommended room height 2300 mm 2300 mm Installation dimensions 1220 x 700 x 1350 mm 1400 x 7500 x 1570 ...

Page 29: ...or surface to reduce the flow resistance A tight seal of the chimney to avoid outside air leaking in Air penetrating from the outside speeds up the cooling of the flue gases These requirements correspond to chimneys of the type conforming to DIN EN 13384 1 2003 03 Thermal and fluid dynamic calculation methods Free standing chimneys require particularly good insulation CHIMNEY DIMENSIONS The system...

Page 30: ...e fitting Every additional fitting results in a greater pressure loss in the exhaust path and should thus be avoided The same is true for overly long connecting pieces If for constructional reasons these must be longer than 1 m they should be adequately insulated at least 5 cm of mineral wool or equivalent material and if possible fitted with an upward inclination The following should also be cons...

Page 31: ...ate zone e g 15 C is used These conditions only apply a few days per year thus the thermal performance of the heating system is greater than required on most days when heating is needed As the boiler for this system is rated for a nominal load the use of an accumulator is required The size of the accumulator must be adapted to the boiler type the type of wood and the building s heating requirement...

Page 32: ...ation section 3 3 Technical data The control of the return temperature is handled by the HDG Lambda Control 1 plus 2 plus control unit The return temperature control consists of a 3 way mixing valve with a 230 V servo drive running time 120 240 s and a circulation pump For the HDG Navora with a nominal thermal power we recommend 20 25 30 kW Wilo 30 1 6 3 way mixing valve DN 32 40 50 kW Wilo 30 1 7...

Page 33: ...ecialists from HDG Bavaria or from an authorised HDG partner and a qualified electrician The hydraulic connection depends on the schematic diagram selected in the respective HDG Lambda Control 1 plus 2 plus system Danger Risk of material damage and injury due to incorrect installation Installing the system requires comprehensive specialist knowledge If installed by untrained persons the heating sy...

Page 34: ...a crane Caution Beware of suspended loads The boiler weighs over 650 kg If the boiler is dropped during transport persons can be seriously injured and the boiler can be damaged Make sure that you use appropriate lifting gear when placing the boiler The boiler packaging can be taken to the local recycling company Figure 4 4 Removing the cover 1 2 3 4 Warning Damage caused by improper assembly The c...

Page 35: ...ng 10 Align the boiler with plastic plates or flat steel strips not included in the scope of delivery so that it is horizontal 11 Close the boiler in the reverse order The HDG Navora boiler has been placed in position TRANSPORTING WITH A PALLET TRUCK 1 Slide the pallet truck under the boiler 2 Transport the boiler to the desired installation site 3 Release the M8 hexagon nuts SW13 1 under the boil...

Page 36: ...erving the minimum clearances See section 4 2 Structural requirements under Necessary room sizes and minimum spacing Figure 4 7 Installing the boiler 1 2 1 Position the floor insulation plate 2 in front of the boiler with the elongated holes 3 facing away from the front of the boiler 1 2 Slide the floor insulation plate 2 under the boiler 1 Figure 4 8 Pushing in the floor insulation plate 1 2 3 3 ...

Page 37: ...adding and the floor insulation plate 2 with the self tapping screws The floor insulation plate is now installed INSERTING THE ASH DRAWER The self tapping screws and the Z profiles can be found in the fuel chamber when the boiler is delivered Figure 4 10 Securing the floor insulation plate 2 1 3 Figure 4 11 Mounting the Z profiles 2 1 3 1 Insert the ash pan 2 into the floor insulation plate 1 The ...

Page 38: ...Lambda Control 1 plus 2 plus control unit 1 5 Attach the HDG Lambda Control 1 plus 2 plus control unit 1 to the control console 2 with the enclosed self tapping screws BOILER TEMPERATURE AND STL SENSOR Figure 4 13 Connecting the control unit 2 3 1 Figure 4 14 Connecting the control unit 1 2 For the HDG Lambda Control 1 plus 2 plus control the boiler temperature sensor and the sensor of the safety ...

Page 39: ...oes not protrude into the chimney 3 Seal the connection to the chimney with highly fireproof silicone or with a suitable mortar The boiler is now connected to the chimney The return temperature sensor is already installed upon delivery The accumulator sensor is located under the cover of the plug board and is already connected to the board upon delivery Please note that here only the assembly of t...

Page 40: ...e from being exceeded The safety heat exchanger serves to protect the boiler against overheating and may not be used for other purposes i e as a normal heat exchanger If the heat transfer capacity is suddenly lost for example if the circulation pump for raising the return temperature fails heat production cannot be stopped as quickly as with an oil or gas fired boiler When the maximum operating te...

Page 41: ... be able to flow freely through the system The flow pressure at the flue pipe connection on the boiler may not significantly exceed the prescribed value The thermal safety device must be installed according to guidelines from HDG Bavaria The TAS must be inspected annually by a qualified technician to test that it is working properly Important In order to prevent leaks avoid turning the connections...

Page 42: ...ead 4 Thermal safety device TAS 5 Runoff connection to drainage system HDG NAVORA 40 45 50 1 Connection bushing for TAS immersion sleeve DN 15 inside thread 2 Safety heat exchanger inlet DN 15 outsize thread 3 Safety heat exchanger outlet DN 15 outside thread 4 Thermal safety device TAS 5 Runoff connection to drainage system Figure 4 16 HDG Navora 20 25 30 thermal safety device 1 2 5 4 3 Figure 4 ...

Page 43: ...ll required DIN EN 12828 safety devices have been installed and are ready for operation The power supply to all components is ensured Makeshift solutions are not sufficient All doors and openings on the boiler and on the chimney connection pipe have been checked for a proper seal Air supply for combustion has been provided A sufficient amount of fuel is available See Operating Manual Lambda Contro...

Page 44: ...TESTING SYSTEM COMPONENTS PROCEDURE See Operating Manual Lambda Control Chapter 4 Wood boiler section 4 5 System component test The boiler model and the nominal thermal power can be seen on the data plate For the hydraulic system refer to the specifications of the responsible specialist heating system construction company Important For safety reasons the system component test may only be conducted...

Page 45: ...nu down or Reduced mode ON or Boiler OFF or Service button 6 Text display 7 Boiler ON indicator 8 Reload indicator 9 Info indicator 10 Fault indicator The HDG Lambda Control 1 plus 2 plus unit is located on the top of the HDG Navora Through the control unit you can regulate the HDG Lambda Control 1 plus 2 plus system and call up information on the current processes See Operating Manual Lambda Cont...

Page 46: ...tch provided by the customer The heating system is now under voltage The control is activated The heating system is switched on and ready for operation 6 3 Structure of the menus 6 4 Displaying information You can call up a variety of information on the display of the HDG Lambda Control 1 plus 2 plus In order for the heating system to be switched on it must first have been put into service by an a...

Page 47: ...he Operating Manual Lambda Control Important When changing fuel e g from softwood to hardwood please also consider the consequential changes in respect of the combustion properties Otherwise faults may occur in the combustion and in the operation of the heating system If necessary the settings of the heating system must be adjusted for the changed fuel Caution Hot surfaces Contact with the hot sur...

Page 48: ...ay of the control unit the message DO NOT OPEN Please wait appears The flue gas fan starts to run Caution Danger of fire When the boiler is in operation open doors constitute a fire danger Do not leave doors open any longer than necessary and never leave them open unattended Check that the hatches are closed every time you heat or reload Danger Danger of explosion A concentration of carbon monoxid...

Page 49: ...control unit the message Open inside door carefully appears 8 Leave any unburnt pieces of wood and charcoal in the fuel chamber 5 9 Stack some highly flammable material small pieces of dry wood about 10 cm high on the burner nozzle 4 so that it is covered 6 Open the upper inside door 1 slowly 7 Open the lower inside door 2 slowly Figure 6 3 Opening the inner doors 2 1 Figure 6 4 Heating up 4 5 2 1...

Page 50: ...as a percentage 14 Fill the fuel chamber 5 according to the percentage specified on the display Use the markings on the edge of the fuel chamber for orientation 15 Close the upper inside door 1 16 Leave the lower inside door 3 open approx 10 to 15 cm until the indicator bar in the display has reached the right end of the display The indicator bar is filled to maximum A signal tone sounds The Boile...

Page 51: ...ons every two years must be carried out in accordance with the requirements of the federal emission limits 1 BImSchV BEFORE THE TEST 1 Clean the heating system completely about two to three days prior to the test See the chapter entitled 7 Cleaning and servicing the heating system section 7 1 Cleaning and maintenance schedule 2 Check that the lambda sensor is securely mounted and tighten it if nec...

Page 52: ... chamber with dry split wood making sure it is compact and evenly distributed and taking the heat transfer capacity into account 9 Close the inside doors and the fuel chamber door 10 Start the chimney sweep test on the HDG Lambda Control 1 plus 2 plus Oak wood wood briquettes boards scrap wood and wood chips are not suitable for the chimney sweep test Danger Danger of asphyxiation due to carbon mo...

Page 53: ...ng mains electricity circuit breaker The heating system is now switched off 6 9 Troubleshooting If a fault occurs in the heating system this is shown in the display of the HDG Lambda Control 1 plus 2 plus See Operating Manual Lambda Control Chapter 26 Faults The heating system must be fitted with a chimney draught regulator to ensure that the maximum permissible flue draught requirement of 20 Pa i...

Page 54: ...btain HDG replacement parts from your specialist heating company The specified cleaning intervals are guidelines These intervals may vary according to the quality of the fuel and the power used by the heating system Interval Component See page Weekly as required Clean the fuel chamber and secondary air openings Clean the secondary combustion chamber and ash compartment 56 58 Every 6 months approx ...

Page 55: ...e hot Even when turned off they only cool down slowly Switch the heating system off and only start with the cleaning and maintenance work when the surfaces have cooled down Warning Danger of fire When the heating system is in operation open doors and lids constitute a fire hazard Always keep the doors and lids closed Only open them when the boiler has finished burning Do not leave them open any lo...

Page 56: ... Wait for approx 15 seconds until the Open filling hatch message appears On the display of the control unit the following message appears Open filling hatch Important Before beginning cleaning and maintenance work the message Boiler OFF must appear on the display of the HDG Lambda Control 1 plus 2 plus control unit in other words the display Boiler ON may not be lit See the chapter entitled 6 Usin...

Page 57: ...this from the fuel chamber using the supplied cleaning tools 8 Leave any unburnt pieces of wood and charcoal in the fuel chamber 2 9 Remove the burner nozzle 1 10 Clean the bearing surfaces on the nozzle brick 3 and the secondary air openings 4 with the supplied cleaning tools or a vacuum cleaner 11 Carefully reinsert the burner nozzle 1 12 Close the hatches in reverse order 13 Press the Reload bu...

Page 58: ...the supplied cleaning tool 7 Using the supplied cleaning tools and without moving the combustion chamber stones carefully pull out the combustion residue from the secondary combustion chamber 1 in the ash compartment 3 8 Using the supplied cleaning tools pull the combustion residue out of the ash compartment 3 into the ash pan 4 9 Empty the combustion residue into a fireproof container 10 Close th...

Page 59: ...ENSOR 1 Allow the fire in the boiler to burn out and cool off 2 Unscrew the union nut 1 with a pipe wrench Important Observe the Generally applicable safety instructions in this section 2 Unscrew the wing nut 1 on the inspection hatch cover 2 3 Remove the inspection hatch cover 2 from the flue gas pipe 3 4 Check whether the flue gas pipe 3 needs cleaning 5 If necessary extract the ash from the flu...

Page 60: ... Chapter 4 Wood boiler section 4 4 Calibrating the lambda sensor The lambda sensor is cleaned and calibrated CLEANING THE FLUE GAS TEMPERATURE SENSOR 1 Allow the fire in the boiler to burn out and cool off Important Steel bristles will damage the lambda sensor To clean the lambda sensor use a fine brass brush instead of a steel brush Important When reinstalling the lambda sensor make sure its seal...

Page 61: ... gas temperature sensor is completed CLEANING THE CLEANING SYSTEM HEAT EXCHANGER SURFACES AND FLUE GAS FLAP 1 Allow the fire in the boiler to burn out and cool off Figure 7 7 Cleaning the flue gas temperature sensor 1 2 Important Observe the Generally applicable safety instructions in this section Caution Risk of injury from automatically driven components Working on the flue gas fan can lead to h...

Page 62: ...n the fuel chamber door 9 Pull the actuating handle 6 of the flue gas flap several times and check whether the cleaning mechanism moves freely 10 Pull the actuating handle 6 of the flue gas flap to the front until it latches into place HDG NAVORA 20 25 30 11 Clean the flue gas flap 3 and the suction channel behind it with a suitable cleaning tool e g scraper or with a vacuum cleaner 12 Unlatch the...

Page 63: ... the flue gas flap have been cleaned HDG NAVORA 40 45 50 19 Clean the flue gas flap 1 and the suction channel behind it with a suitable cleaning tool e g scraper or with a vacuum cleaner 20 Unlatch the actuating handle of the flue gas flap 21 Pull the actuating handle of the cleaning system to the front until it latches into place 22 Remove the four lynch pins 2 Figure 7 10 Pulling out the cleanin...

Page 64: ...ed properly The cleaning system the heat exchanger surfaces and the flue gas flap have been cleaned CLEANING THE FLUE GAS FAN Figure 7 12 Pulling out the cleaning turbulators 1 2 Important When cleaning the heat exchanger surfaces always first push the cleaning brush all the way down and through before you pull it up again so that the wire bristles of the brush are not bent Important Observe the G...

Page 65: ...h a vacuum cleaner 6 Clean the fan wheel 3 and the annular gap behind it with a cleaning tool 7 Inspect the seal and the contact surfaces 2 around the flue fan and the flue gas collection box 8 Replace the seal if it is damaged 9 Reinstall the flue gas fan in the reverse sequence The cleaning of the flue gas fan is completed CLEANING THE AIR CONTROL UNIT Figure 7 13 Removing the flue gas fan 3 2 1...

Page 66: ...he two rotary vanes behind the actuators and make sure that these can move 5 Close the air control unit in reverse order The air control unit is cleaned INSPECTING THE DOOR SEALS FOR LEAKS CHECKING THE FUEL CHAMBER DOOR 1 Allow the fire in the boiler to burn out and cool off 2 Open the fuel chamber door See Clean the fuel chamber and secondary air openings in this section Figure 7 15 Cleaning the ...

Page 67: ...nspected all four of the contact surfaces 3 7 Remove the paper and close the fuel chamber door 1 The inspection of the fuel chamber door is complete INSPECTING THE COMBUSTION CHAMBER DOOR 8 Open the combustion chamber door 1 9 Clamp a sheet of paper approx 30 cm long and 2 cm wide between the contact surface 3 and the seal 2 of the combustion chamber door 10 Close the combustion chamber door 1 Fig...

Page 68: ... CLEANING SHAFT LID CLEAN CONTROL UNIT 1 Clean the control unit with a moist lint free cloth 2 For stubborn dirt use a mild detergent 3 Wipe the control unit dry with a soft cloth The control unit has been cleaned If a correction to the combustion chamber door is necessary consult a trained specialist 14 Lift off the cover 1 of the cleaning shaft lid 3 15 Make sure that the cleaning shaft lid 3 do...

Page 69: ...lectrical power supply 4 Once it has cooled down drain the heating water from the system 5 Observe the safety regulations for personnel when disconnecting the boiler from the heating system 6 Dismantle the individual components of the boiler The boiler has been dismantled Danger Material damage and personal injury due to incorrect dismantling Dismantling the system requires comprehensive specialis...

Page 70: ...ia a local recycling centre Boiler Cladding The electrical components can also be recycled via a local recycling centre Fibreglass mineral wool and plastic parts should be brought to the relevant waste disposal centres Oily or greasy components and condensers may only be disposed of through a specialist waste disposal centre ...

Page 71: ...e heating system and the hydraulic components must meet the requirements in the operating manual and the specified HDG hydraulic diagrams The heating system must be installed according to the applicable rules regulations and guidelines The fuel quality must correspond to the requirements specified by HDG Bavaria GmbH Any defects present are to be dealt with by HDG Bavaria GmbH 9 3 Warranty exclusi...

Page 72: ...eaker in the mains distribution box of the building when it is necessary to de energise the system See also Chapter 6 Using the heating system section 6 2 Switching on the heating system PLUG BOARD The circuit diagram depends on the schematic diagram selected in the respective HDG Lambda Control 1 plus 2 plus system Please take the required specifications from the corresponding circuit diagram in ...

Page 73: ...ondary air actuator V2 ST 14 WAE1 Selection output input 1 Speed controlled flue gas fan or electric fresh air flap ST 15 Pump M1 ST 16 Flue gas fan 1 stage ST 17 Heating circuit pump 1 M HC1 ST 18 Heating circuit valve 1 Y HC1 ST 19 WA1 Selection output 1 ST 20 WA2 Selection output 2 toggle contact ST 21 Capacitor C1 for speed reduction of flue gas fan cleaning ST 22 WA3 Selection output 3 ST 23 ...

Page 74: ...15 December 2004 on the approximation of the laws of the Member States relating to electromagnetic compatibility and repealing Directive 89 336 EEC 97 23 EC Pressure Equipment Directive 97 23 EC of the European Parliament and of the Council of 29 May 1997 on the approximation of the laws of the Member States concerning pressure equipment In accordance with section 2 of article 7 the applied harmon...

Page 75: ...Cleaning system 14 17 cleaning 61 Cleaning the secondary combustion chamber 58 Cleaning the Lambda Control 1 plus 2 plus control unit 68 Cleaning tools 56 Cleaning turbulators 15 18 CO2 content 22 23 Combustion chamber door 14 17 Checking for leaks 67 Combustion chamber panels 15 18 Combustion duration 22 23 Commissioning the system 43 Controls and display components 45 D Declaration of Conformity...

Page 76: ...ensions 22 23 Plug board 8 15 18 R Reload signal 8 Residual risks 10 Return connection 16 19 22 23 Return temperature 22 23 Return temperature control 32 Return temperature sensor 39 Room height 28 S Safety heat exchanger 15 16 19 connection 22 23 Safety temperature limiter 8 Scope of delivery 33 Secondary combustion chamber 15 18 Sensor 8 Sound pressure level 22 23 Spare parts 54 Supply connectio...

Page 77: ...77 NOTICE ...

Page 78: ...78 HDG Navora 40 45 50 Version 1 de HDG Bavaria GmbH 06 2008 NOTICE ...

Page 79: ......

Page 80: ...aria GmbH Heizsysteme für Holz Siemensstraße 22 D 84323 Massing Tel 49 0 8724 897 0 info hdg bavaria com www hdg bavaria com Art Nr 9980001059 V 04 en 04 2013 Translation of the original operating instructions ...

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HDG Navora 20, Operation Manual

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Summary of Contents for Navora 20

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