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Please follow these safety instructions closely to prevent accidents and
material losses.

Safety instructions explained

Danger

This symbol warns against the
risk of injury.

Please note

This symbol warns against the
risk of material losses and envi-
ronmental pollution.

Note

Details identified by the word "Note"
contain additional information.

Target group

These instructions are exclusively
intended for qualified contractors.

■ Work on gas installations may only

be carried out by a registered gas fit-
ter.

■ Work on electrical equipment may

only be carried out by a qualified
electrician.

■ The system must be commissioned

by the system installer or a qualified
person authorised by the installer.

Regulations to be observed

■ National installation regulations
■ Statutory regulations for the preven-

tion of accidents

■ Statutory regulations for environmen-

tal protection

■ Codes of practice of the relevant

trade associations

■ Relevant country-specific safety reg-

ulations

Safety instructions

Safety instructions

5837148

Содержание Vitodens 100 Series

Страница 1: ...d service instructions for contractors VIESMANN Vitodens 100 6 5 to 35 0 kW Wall mounted gas condensing boiler Natural gas version For applicability see the last page VITODENS 100 5837148 HK 11 2018 P...

Страница 2: ...qualified contractors Work on gas installations may only be carried out by a registered gas fit ter Work on electrical equipment may only be carried out by a qualified electrician The system must be c...

Страница 3: ...e system or pipework Please note Electronic assemblies can be damaged by electrostatic dis charge Prior to commencing work touch earthed objects such as heating or water pipes to dis charge static loa...

Страница 4: ...s from spreading What to do if water escapes from the appliance Danger If water escapes from the appli ance there is a risk of electrocu tion Switch OFF the heating system at the external isolator e g...

Страница 5: ...ir to the outside extractor hoods extrac tors air conditioning units etc can create negative pressure If the boiler is operated at the same time this can lead to a reverse flow of flue gas Danger The...

Страница 6: ...ning the control unit enclosure 25 Electrical connections 26 Service instructions Commissioning inspection maintenance Steps commissioning inspection and maintenance 33 Further details regarding the i...

Страница 7: ...87 Heat cell assembly 89 Burner assembly 91 Hydraulic assembly 93 Hydraulic assembly system boiler 95 Hydraulic assembly combi boiler 97 Control unit assembly 99 Miscellaneous assembly 101 Specificat...

Страница 8: ...lectromagnetic oven or microwave Do not remove any sealed parts from the appliance Do not use caustic cleaning agents to clean the appliance The appliance must not be installed in bedrooms living room...

Страница 9: ...for heating up heat ing water that is of potable water qual ity Intended use presupposes that a fixed installation in conjunction with permissi ble system specific components has been carried out Com...

Страница 10: ...ate any safety clearances for fire protection After installation the heating contrac tor should mark the position of the flue system and instruct the system user about operation and the safety regulat...

Страница 11: ...the sur face Dispose of component correct ly Dispose of component at a suitable collection point Do not dispose of component in domestic waste The sequences of steps for commis sioning inspection and...

Страница 12: ...at exchanger gas condens ing combi boiler Connections for heating water flow and return Connections for cylinder flow and return gas condensing system boiler Connections for cold water and DHW gas con...

Страница 13: ...stem boiler Cylinder flow G Gas condensing combi boiler DHW G C Gas connection G D Gas condensing system boiler Cylinder return G Gas condensing combi boiler Cold water G E Heating return G F Condensa...

Страница 14: ...are the water connections Flush the heating system 2 Prepare the gas connection 3 Prepare the electrical connections The appliance is delivered fitted with a 1 3 m long outside the boiler power cable...

Страница 15: ...15 Fitting the wall mounting bracket 250 A 10 146 A Vitodens installation template Installation sequence Mounting the boiler and making connections 5837148 Installation...

Страница 16: ...mplate on the wall 2 Mark out the rawl plug holes 3 Drill 7 10 mm holes and insert the rawl plugs supplied 4 Fit the wall mounting bracket with the screws supplied Installation sequence Mounting the b...

Страница 17: ...2x 3 1 2 1 Undo the screws on the underside of the boiler do not remove them completely 2 Remove front panel 3 Hook the boiler into the wall mount ing bracket Installation sequence Mounting the boile...

Страница 18: ...r flow Gas condensing combi boiler DHW C Gas connection D Gas condensing system boiler Cylinder return Gas condensing combi boiler Cold water E Heating return Fitting the connection set Connection set...

Страница 19: ...gas condensing combi boiler accessories A C E B D Gas connection Gas supply pressure 15 30 mbar 1 5 3 0 kPa Set value 20 mbar 2 0 kPa A 1 Connect the gas shut off valve on site to adaptor A Installati...

Страница 20: ...aterial dam age Remove residues of the leak detec tion agent after testing Please note Excessive test pressure will damage the boiler and the gas train Max test pressure 150 mbar 15 kPa If a higher pr...

Страница 21: ...or other metallic materials Do not close off the condensate pipe or change its position Observe local rules and waste water regulations for draining off conden sate Note Fill the trap with water befo...

Страница 22: ...perature sensor is 110 C maximum so that the maximum per missible flue gas temperature cannot be exceeded This shutdown threshold cannot be changed Installation information Keep flue gas routes short...

Страница 23: ...2 Push external wall connection A with wall bezel B into the wall opening 3 Secure wall bezel C internally 4 If the external wall connection ter minates near public roads up to a height of 2 m above...

Страница 24: ...ue connec tion pipe from the inside and route with a fall of min 3 approx 50 mm m towards the boiler in order to prevent condensate escap ing to the outside Installation sequence Mounting the boiler a...

Страница 25: ...ssemblies can be damaged by electrostatic dis charge Prior to commencing any work touch earthed objects such as heating or water pipes to dis charge static loads Installation sequence Opening the cont...

Страница 26: ...B E 4 3 2 1 A D F LN X2 X11 T00 T00 T00 X11 X13 CN3 Ext extension AUX 900101 A accessories X1 Cylinder temperature sensor E only for gas system boilers X2 Power supply F 230 V 50 Hz A power cable with...

Страница 27: ...orth westerly wall 2 to 2 5 m above ground level In multi storey buildings in the upper half of the second floor Not above windows doors or vents Not immediately below balconies or gutters Never rende...

Страница 28: ...3 4 X7 B A 1 2 3 4 NO NC COM A Vitotrol 100 type UTDB B Terminals on the control unit Note Observe parameter P07 see page 58 Recommended connecting cable 2 core cable for low voltage Installation sequ...

Страница 29: ...1 2 3 4 NO NC COM N L 220 V A Vitotrol 100 type UTDB RF B Terminals on the control unit Note Observe parameter P08 see page 59 Recommended connecting cable 2 core cable for low voltage Installation se...

Страница 30: ...core cable for low voltage Connecting system to equipotential bonding of the building Danger The absence of system compo nent earthing can lead to seri ous injury from electric current if an electric...

Страница 31: ...omestic distribution box C Gas line D Earthing clip E Equipotential bonding bar F Metal pipes Cross section of earth cables and earth conductors 2 5 mm2 to 6 mm2 Installation sequence Electrical conne...

Страница 32: ...ion requirements specified by your local power supply utility Power supply to boiler Protect with a fuse MCB of up to 16 A Install residual current device RCD Fit a secure earth connection Install in...

Страница 33: ...O2 content 45 9 Limiting the maximum heating output 47 10 Removing the burner 47 11 Checking the burner gasket and burner gauze assembly 48 12 Checking and adjusting the electrode 49 13 Cleaning the h...

Страница 34: ...ction steps Maintenance steps Page 21 Mounting the front panel 53 22 Marking the position of the flue system 23 Instructing the system user 54 Commissioning inspection maintenance Steps commissioning...

Страница 35: ...ing water are available from Viessmann The pH value of the fill water should be between 6 5 and 8 5 Special antifreeze suitable for heating systems can be added to the fill water The antifreeze manufa...

Страница 36: ...Display of current system pressure during the filling process System pressure 0 08 MPa System pressure between 0 03 and 0 08 MPa Pressure is auto matically shown on the display System pressure 0 1 MPa...

Страница 37: ...via on site fill valve Gas condensing combi boiler Via fill valve C in the connection set if supplied or alternatively via fill valve D on the underside of the boiler Minimum system pressure 0 08 MPa...

Страница 38: ...0 08 MPa during the filling and venting process 08 For activating the filling and vent ing function see next chapter 09 After the system has been fully charged and vented turn OFF the ON OFF switch a...

Страница 39: ...e operating pressure 0 8 bar 80 kPa with valve C 6 Open shut off valve B 7 Disconnect drain hose and keep safe Activating the filling and venting function 1 Hold down MODE and simulta neously for appr...

Страница 40: ...SEt and flash 02 Press MODE 03 Use to select 12 or 24 hour mode 04 OK to confirm 05 Use to select the current hour 06 OK to confirm 07 Use to select the current minute 08 OK to confirm 09 Use to sele...

Страница 41: ...ct P14 09 OK to confirm 10 Use to select the function Outside temperature sensor OTC Room temperature sensor RTC 11 OK to confirm 12 MODE to exit the parameter level Activating deactivating WLAN modul...

Страница 42: ...WLAN module fails to register on the router FAIL is displayed When the WLAN module registers successfully on the router PASS is displayed If the WLAN module is active in access point mode AP is dis pl...

Страница 43: ...the steps and set value OFF in P27 Then repeat the steps once more and select value On again The functions of the external extension are set in P40 to P49 Installation and service instruc tions Exter...

Страница 44: ...onnec tor IN on the gas train but do not remove it Connect the pressure gauge 3 Open the gas shut off valve 4 Check the static pressure Set value Max 30 mbar 3 0 kPa 5 Start the boiler Note During com...

Страница 45: ...5 3 0 kPa Start the boiler Above 30 mbar 3 0 kPa Connect the separate gas pressure governor up stream of the system and set the pre charge pressure to 20 mbar 2 0 kPa Notify the gas supply utility Che...

Страница 46: ...ust be between 7 0 and 10 5 5 Select the lower heating output Use to switch directly between the upper and lower heating output LO and are displayed C 6 Measure the CO2 content for the lower heating o...

Страница 47: ...lect P03 4 OK to confirm 5 Use to set the max heating output in of the upper rated heat ing output Setting range 40 to 100 6 OK to confirm 7 MODE to exit the parameter level Removing the burner C B D...

Страница 48: ...d remove the burner Please note To prevent damage never rest the burner on the burner gauze assembly Checking the burner gasket and burner gauze assembly Check burner gasket A for damage and replace i...

Страница 49: ...m 6 Fit electrode B Torque for fixing screws 4 5 Nm Checking and adjusting the electrode 1 Check the electrode for wear and contamination 2 Clean the electrode with a small brush not a wire brush or e...

Страница 50: ...ction and service life of the heat exchanger The use of chemical cleaning agents is not required A 1 Use a vacuum cleaner to remove combustion residues from heating surface A of the heat exchanger 2 F...

Страница 51: ...lling the burner F E C B D A4x 1 Fit the burner and diagonally tighten 4 screws A to a torque of 8 5 Nm 2 Insert new gasket Secure the fit ting of gas supply pipe B 3 Refit Venturi extension C to the...

Страница 52: ...hut off valve 2 Use to select IF00 The main display shows the current pressure in MPa 3 Drain the system or close the cap valve on the expansion vessel and reduce the pressure until 0 MPa is shown 4 I...

Страница 53: ...use of leak detection spray can result in faulty operation Leak detection spray must not come into contact with electrical contacts or block the diaphragm opening on the gas valve Mounting the front...

Страница 54: ...regulations Hand over the operating instructions to the system user After installation the installer must identify the flue system and provide the operator with the safety instruc tions required for...

Страница 55: ...tional display Flashing constant Temperature in C Set heating water temperature Symbols Main display Additional display Flashing constant Temperature in C Set room temperature Symbols Main display Add...

Страница 56: ...am set room temperature for operation with room temperature sensor Symbols Main display Additional display Flashing constant p Temperature in C Time program heating curve for operation with outside te...

Страница 57: ...ode Parameter Possible change Main display Additional display P01 OFF Test mode switch ed off On Test mode switch ed on With test mode switched on use to change be tween upper and lower heating output...

Страница 58: ...On WLAN module switched on When ON the symbol appears Activate OpenTherm WiFi access Parameter Possible change Main display Additional display P07 0 OpenTherm basic func tion delivered condi tion Adj...

Страница 59: ...ge Main display Additional display P08 0 Without Vitotrol 100 type UTDB RF2 1 With Vitotrol 100 type UTDB RF2 Maintenance reminder Parameter Possible change Main display Additional display P09 Deactiv...

Страница 60: ...e sensor Parameter Possible change Main display Additional display P14 OFF without tempera ture sensor OTC with outside tem perature sensor RTC with room temper ature sensor External extension Paramet...

Страница 61: ...fan power supply and fan control Yes Ignition No Fault F04 Check the ignition module connec tion Yes Gas train opens No Fault F04 or F08 Check the gas train 230 V con trol voltage gas supply pressure...

Страница 62: ...recent fault messages For the meaning of the fault messages see Fault display from page 66 Time program for DHW heating and heating mode see operat ing instructions The submenu for DHW heating is only...

Страница 63: ...rnal exten sion IF09 C Current outside temperature for op eration with outside temperature sen sor IF10 C Current room temperature for opera tion with room temperature sensor IF10 C Set heating curve...

Страница 64: ...thousands Ct01 I Control unit hours run in units Ct02 0 Burner hours run in thousands Ct03 I Burner hours run in units Ct04 0 Ignition attempts in millions Ct05 II Ignition attempts in thousands Ct06...

Страница 65: ...stant Heat demands heating mode in mil lions Ct11 II Heat demands heating mode in thousands Ct12 I Heat demands heating mode in units Ct13 0 Faults in thousands Ct14 I Faults in units Ct15 0 Diagnosti...

Страница 66: ...gas pressure switch if installed 0C Standby Mains voltage too low Wait until the mains volt age returns to the normal range CC Function at the ex ternal extension faul ty Communication between contro...

Страница 67: ...erform a reset see F02 F05 Burner in a fault state Fan does not start when burner starts Check the fan motor and connecting cables Turn the ON OFF switch off and back on again or perform a reset see F...

Страница 68: ...oiler or outlet temperature sen sor gas condens ing combi boiler Check the sensor see page 74 F59 No DHW heating Lead break cylin der temperature sensor gas con densing system boiler or outlet tempera...

Страница 69: ...eak lower cylinder tempera ture sensor S2 at the external exten sion Checking the sensor Installation and service instruc tions for external extension F90 Function at the ex ternal extension faul ty S...

Страница 70: ...again or perform a reset see F02 Repairs Please note Residual water will escape when the boiler or one of the following components is fitted or removed Water filled pipework Heat exchanger Circulatio...

Страница 71: ...71 Removing the front panel 2x 1 2 1 Undo the screws on the underside of the boiler Do not remove 2 Remove front panel Troubleshooting Repairs cont 5837148 Service...

Страница 72: ...n control unit enclosure 1 Open the control unit enclosure See page 25 2 Disconnect leads from outside tem perature sensor 100 10 15 10 5 10 20 30 Temperature in C 4 6 8 20 40 60 80 Resistance in k 0...

Страница 73: ...C 0 4 0 6 0 8 2 4 6 8 20 Resistance in k 2 Check the sensor resistance and compare it to the curve 3 In the case of severe deviation drain the boiler on the heating water side and replace the sensor...

Страница 74: ...Disconnect plug from the cable harness and check the resistance 10 1 10 30 50 70 90 110 Temperature in C 0 4 0 6 0 8 2 4 6 8 20 Resistance in k 2 Compare the sensor resistance to the curve 3 In the ev...

Страница 75: ...heck the sensor resistance and compare it to the curve 10 1 10 30 50 70 90 110 Temperature in C 0 4 0 6 0 8 2 4 6 8 20 Resistance in k 3 In the event of severe deviation replace the sensor Shut off th...

Страница 76: ...below approx 95 C check the temperature limiter A 1 Disconnect the leads from tempera ture limiter A 2 Check the continuity of the temper ature limiter with a multimeter 3 Remove faulty temperature li...

Страница 77: ...m flue gas temperature sensor A aG 2 Check the sensor resistance and compare it to the curve 10 1 10 30 50 70 90 110 Temperature in C 0 4 0 6 0 8 2 4 6 8 20 Resistance in k 3 In the event of severe de...

Страница 78: ...3 Remove faulty flow limiter B 4 Select new flow limiter B accord ing to the boiler serial no see type plate and the following table 5 Insert new flow limiter B 6 Remove filter C clean and re fit 7 Se...

Страница 79: ...water F DHW 1 Shut off and drain the boiler on the heating water and DHW sides 2 Pivot the control unit downwards 3 Undo 2 screws A on plate heat exchanger B and remove plate heat exchanger with gask...

Страница 80: ...replace the plate heat exchanger if required 6 Install in reverse order using new gaskets Note During installation ensure the fixing holes are aligned and the gaskets are seated correctly Fit the plat...

Страница 81: ...perature Heating curve for weather compensated operation 0 10 20 30 40 50 60 70 80 90 20 15 10 5 0 5 10 15 20 Outside temperature in C Heating water temperature in C G F E D C B A Heating curve settin...

Страница 82: ...eaches 28 C Frost protection with connected out side temperature sensor If the outside temperature falls below 1 C the internal circulation pump switches on The 3 way diverter valve is in the central...

Страница 83: ...1 1 2 3 1 2 3 1 2 3 L N M IO 16 15 X11 1 2 3 4 WiFi X13 1 2 24V X11 1 2 3 4 WiFi X13 1 2 24V A PCB inside the control unit B Power supply CN3 External extension AUX 900101 X3 Gas pressure switch acce...

Страница 84: ...or gas condensing combi boiler Cylinder temperature sensor gas condensing system boiler aG Flue gas temperature sensor s Circulation pump 230 V d Motor diverter valve dG Gas solenoid valve fJ Temperat...

Страница 85: ...lowing information is required Serial no see type plate A Assembly from this parts list Position number of the individual part within the assembly from this parts list Parts lists Ordering parts 58371...

Страница 86: ...86 A B C D E F A Type plate B Casing assembly C Heat cell assembly D Hydraulic assembly E Control unit assembly F Miscellaneous assembly Parts lists Overview of assemblies 5837148...

Страница 87: ...87 0002 0003 0002 0001 0006 0003 0005 0004 Parts lists Casing assembly 5837148 Service...

Страница 88: ...88 Pos Part 0001 Front panel 0002 Profiled seal 0003 Viessmann logo 0004 Strain relief upper part 0005 Air box floor 0006 Wall mounting bracket Parts lists Casing assembly cont 5837148...

Страница 89: ...89 0012 0010 0011 0017 0016 0008 0009 0007 0006 0014 0014 0014 0015 0013 0004 0003 0005 0001 0002 0004 0013 0014 0015 0001 0003 0011 Parts lists Heat cell assembly 5837148 Service...

Страница 90: ...0007 Condensate hose 0008 Splash trap 0009 Tee connector 0010 Gas connection 0011 Gasket A 17 x 24 x 2 5 pce 0012 Burner see burner assembly 0013 Thermal insulation block 0014 Heat exchanger mounting...

Страница 91: ...91 0001 0002 0003 0004 0005 0006 0007 0012 0008 0009 0012 0012 0010 0011 0011 0004 0001 0004 0006 0008 0006 0012 0008 0012 Parts lists Burner assembly 5837148 Service...

Страница 92: ...0004 Burner gauze assembly gasket 0005 Burner door 0006 Gasket ionisation electrode 5 pce 0007 Ignition ionisation electrode wearing part 0008 Gasket burner door flange wearing part 0009 Radial fan N...

Страница 93: ...03 0007 0007 0009 0010 0007 0010 0003 0002 0001 0010 0005 0007 0006 0003 0004 0004 0011 0012 0013 0010 0016 0015 0009 0007 0014 0003 0004 0017 0007 0008 0008 0007 Parts lists Hydraulic assembly 583714...

Страница 94: ...le hose HR heating return 0007 Spring clip DN 25 5 pce 0008 Clip 7 10 5 pce 0009 Clip 7 8 5 pce 0010 O ring 20 63 x 2 62 5 pce 0011 Temperature sensor 0012 Profile hose HV heating flow 0013 Pressure s...

Страница 95: ...95 0012 0021 0008 0009 0013 0001 0006 0005 0013 0008 0009 0020 0019 0006 0017 0016 0013 0005 0013 0001 0004 Parts lists Hydraulic assembly system boiler 5837148 Service...

Страница 96: ...ements set 0006 Pump motor 0008 Stepper motor 0009 Cartridge stepper motor 0012 Heating flow 0013 Gaskets set 0016 Return unit system boiler 0017 Circulation pump 0019 Diaphragm grommet 0020 Overflow...

Страница 97: ...018 0003 0003 0003 0005 0007 0010 0011 0013 0014 0006 0006 0019 0015 0013 0012 0021 0008 0009 0004 0002 0001 0013 0005 0014 0011 0010 0017 0007 0005 0016 Parts lists Hydraulic assembly combi boiler 58...

Страница 98: ...Flow switch set 0008 Stepper motor 0009 Cartridge stepper motor 0010 Flow limiter 0011 DHW supply adaptor with filter 0012 Flow unit combi boiler 0013 Gaskets set 0014 Fill valve 0015 Temperature sen...

Страница 99: ...99 0011 0003 0002 0009 0002 0010 0012 0001 0004 0005 0006 0007 0008 0013 Parts lists Control unit assembly 5837148 Service...

Страница 100: ...00 0005 Connecting cable gas valve 0006 Fan connecting cable 100 0007 Power cable stepper motor 0008 Connecting cable X7 0009 Fuse 2 5 A slow 250 V 10 pce 0010 Cable tie 10 pce 0011 Vitodens 100 PCB 0...

Страница 101: ...002 Pos Part 0001 Touch up spray paint white 150 ml 0002 Touch up paint stick white 0003 Special grease 0004 Installation and service instructions 0005 Operating instructions Parts lists Miscellaneous...

Страница 102: ...80 60 C 99 0 99 5 98 0 TF TR 50 30 C 106 5 107 0 106 9 At partial load 30 TF TR 50 30 C 105 9 106 5 105 6 Gas throughput relative to max heating output Natural gas 12T m3 h 1 9 2 6 3 5 Gas supply pre...

Страница 103: ...20 220 220 Rated frequency Hz 50 50 50 Rated current A 2 0 2 0 2 0 IP rating IPX4D IPX4D IPX4D Protection class I I I Internal fuse A 2 5 2 5 2 5 Permissible ambient temperature During operation C 0 t...

Страница 104: ...6 3 5 Gas supply pressure Natural gas 12T Pa 2000 2000 NOx class 5 5 Power consumption Max W 124 150 Without circulation pump W 41 51 Boiler water capacity l 2 9 3 6 Diaphragm expansion vessel Capaci...

Страница 105: ...tput m3 h 41 1 56 9 Flue gas mass flow rate at min heating output m3 h 14 6 17 6 Balanced flue connection 7 mm 60 100 60 100 Rated voltage V 220 220 Rated frequency Hz 50 50 Rated current A 2 0 2 0 IP...

Страница 106: ...irculation pump UPS 15 50 rated heating output 19 kW 1 5 2 2 5 Flow rate in m h 100 200 300 10 20 30 40 1 0 5 0 500 600 400 50 60 0 0 kPa Residual head mbar 3 C B A A Stage 1 B Stage 2 C Stage 3 Speci...

Страница 107: ...d heating output 26 kW 1 5 2 2 5 Flow rate in m h 100 200 300 10 20 30 40 1 0 5 0 500 600 400 50 60 0 0 kPa Residual head mbar 3 3 5 C B A A Stage 1 B Stage 2 C Stage 3 Specification Specification con...

Страница 108: ...ed heating output 35 kW 1 5 2 2 5 Flow rate in m h 100 200 300 10 20 30 40 1 0 5 0 500 600 400 50 60 0 0 kPa Residual head mbar 3 3 5 700 70 A B C A Stage 1 B Stage 2 C Stage 3 Specification Specifica...

Страница 109: ...llowing standards GB25034 2010 CJ T395 2012 CECS215 2006 This product meets the requirements of the efficiency standard GB20665 2015 and is classified as an energy saving product Dachang 1 January 201...

Страница 110: ...66 Filling function 35 Fill valve 37 Fill water 35 Fittings connecting 18 Flow limiter 78 Flue gas connection 22 Flue gas temperature sensor 77 Flue pipe 22 Front panel mounting 53 Front panel remova...

Страница 111: ...ing 35 System pressure 52 T Temperature limiter 76 Time setting 40 Trap 21 50 Troubleshooting 70 U Unlocking 62 V Ventilation air pipe 22 Venting 39 Vitotrol 100 Connection type UTDB 28 Connection typ...

Страница 112: ...528 Viessmann China Ltd Unit 16 17 F Millennium City 2 378 Kwun Tong Road Kwun Tong Kowloon Hong Kong Tel 852 2544 0807 Fax 852 2544 0747 www viessmann com Viessmann Werke GmbH Co KG D 35107 Allendorf...

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