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Summary of Contents for Viessmann Vitomax HW Series
- Page 1 Viesmann Operating and service instructions for contractors Vitomax HW Type M70 Type M72 Type M74 Type M92 Type M94 Type M96 High pressure hot water boilers VITOMAX HW Please keep safe. 5784019 GB 1/2019...
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Page 2: Electrostatic Discharge
Safeguard the system against reconnection. tion can compromise the safe operation of the ■ system. Hot surfaces Replace faulty components only with genuine Viessmann spare parts. Danger Hot surfaces can lead to burns. Never touch hot surfaces, e.g. ■ Steam pipes ■... -
Page 3: Safety Instructions
This applies in particular to the disposal of thermal lidate our warranty. insulation materials and gaskets/seals on the gas side. For replacements, use only original spare parts supplied or approved by Viessmann. Safety instructions for operating the system General Draining hot water... - Page 4 Safety instructions Safety instructions (cont.) Faults and defects that cannot be remedied locally must be reported to the manufacturer. Protect all boiler parts and control equipment from rain, water leaks and expelled steam.
- Page 5 Steps - commissioning, inspection and maintenance ......15 tion, maintenance Wearing parts Wearing parts and gaskets ..............25 Viessmann Industrial Service contact details ........28 ■ Checklist Checklist for boiler system: Hot water boilers ........29 Recommendation regarding scope and interval of testing ....29 Appendix Steam and hot water boilers ..............
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Page 6: Designation Of Boiler Types
Information Symbols The steps in connection with commissioning, inspec- Symbol Meaning tion and maintenance are found in the "Commission- Reference to other document containing ing, inspection and maintenance" section and identified further information as follows: Step in a diagram: Symbol Meaning The numbers correspond to the order in Steps required during commissioning... -
Page 7: Intended Use
Information Intended use The appliance is intended solely for installation and All other use is deemed inappropriate. Any resulting operation in sealed unvented heating systems, with losses are excluded from the manufacturer's liability. due attention paid to the associated installation, serv- ice and operating instructions. -
Page 8: Shutdown And Preservation
Never interrupt boiler operation, even if no heat is being drawn off temporarily Authorised to commission the boiler: Maintain the following at all times ■ Viessmann Industrial Service (for contact details see ■ Water temperature: 70 °C page 28) or ■... -
Page 9: Operating Information
Operating information Shutdown and preservation (cont.) What preservation is for Interruption in operation A depressurised boiler system is at risk from idle-time Duration Recommendation corrosion. Such corrosion can be prevented by preser- 3 days Maintain the positive pressure in the boil- ≤... -
Page 10: Information On Maintenance
Information on maintenance Correct maintenance ensures trouble-free, efficient and environmentally responsible system operation: Observe the specified maintenance intervals ■ Only use authorised companies: ■ Viessmann Industrial Service (for contact details – see page 28) – Other authorised contractors... -
Page 11: Standard Values For Water Quality
Use a chemical water treatment system in the boiler ■ Reduced repair costs system. Request a quotation from Viessmann (for contact Advantages of using a chemical water treatment details see page 28). ■ The specified standard values and water conditions... - Page 12 Rectify incorrect operating parameters Depending on the water treatment applied e.g. – water softening: as required Recommendation Commission Viessmann Industrial Service (for contact Limescale deposits details see page 28) or another contractor to carry out the relevant measures. Production Limescale deposits shorten the service life of the boiler.
- Page 13 < 10 < 15 In accordance with the Drinking Water Ordi- mg/l ≤ ≤ ≤ ■ nance/Drinking Water Treatment Ordinance For Viessmann hot water boilers mg/l < 2.5 < 5 < 15 ■ Use of oxygen binders: Sodium sulphite (Na mg/l <...
- Page 14 Operating information Standard values for water quality (cont.) Corrosion protection with chemicals: Recommendation Obtain a safety declaration from the chemical manu- Consult the relevant contractor regarding water treat- facturer regarding the interaction of the chemicals with ment. the materials used in the steam boiler, the hot water boiler and the other components of the heating sys- Detailed information tem.
- Page 15 Commissioning, inspection, maintenance Steps - commissioning, inspection and maintenance Commissioning steps Inspection steps Maintenance steps Page • • • 1. Commissioning the system....................16 • • 2. Shutting down the system....................17 • 3. Removing the burner (if required)..................17 •...
- Page 16 Commissioning, inspection, maintenance Commissioning the system Information on burners and accessories 14. Start the system in the following order: ■ Mains isolator ■ Switches for all the equipment required for oper- 01. Check that the fuel being used is permissible for ating the boiler system the current system configuration.
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Page 17: Commissioning The System
Commissioning, inspection, maintenance Commissioning the system (cont.) Tightening torques M Cover Dimensions Handhole 100 x 150 mm M16 100 Nm Headhole 220 x 320 mm M20 200 Nm Manhole 320 x 420 mm M24 350 Nm Tab. 7 Shutting down the system Danger Risk of injury when opening pressurised boiler flue connections. - Page 18 Commissioning, inspection, maintenance Removing the closures of the inspection ports Undo the fittings. Remove the closures of inspection ports Fig. 3 Removing and cleaning the turbulators (if installed) 1. Without using force, remove turbulators with turbulator extractor 2. Clean the turbulators. Fig.
- Page 19 Commissioning, inspection, maintenance Cleaning the sight glass Danger Hot surfaces can cause burns. Only open the slider in the sight glass for brief inspection of the flame. Observe occupational safety. Wear protective clothing where necessary. Fig. 6 Clean the sight glass. Check gaskets .
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Page 20: Checking The Water Chamber For Deposits
Commissioning, inspection, maintenance Inserting turbulators (if installed) and closing boiler door(s) 1. Fully insert turbulators into the 3rd flue. Use tur- bulator extractor 2. Close the boiler door(s). 3. Tighten screws evenly to 20 Nm. Fig. 8 Closing and securing the inspection ports Fit in reverse order to the description on page 18 (tightening torque 20 Nm) Fig. - Page 21 Commissioning, inspection, maintenance Checking the connections and inspection ports on the water side for leaks To check for leaks, fill the boiler system with water. 2. Check connections and ports for leaks. Danger 3. If necessary, retighten the closures (see Table on The surfaces of steam boilers and hot water page 17).
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Page 22: Adjusting The Burner
Commissioning, inspection, maintenance Checking the flue pipe for tightness Adjusting the burner The combustion heating output of the burner must not Burner operating and service instructions exceed the permissible combustion heating output of the boiler. Adjust the maximum gas or oil throughput of the burner to the rated boiler heating output. - Page 23 Commissioning, inspection, maintenance Adjusting the burner (cont.) Boiler size Max. pressure drop on the flue gas side For natural gas mbar 12.0 13.4 12.8 15.1 14.1 14.7 16.5 18.2 18.2 ■ For EL fuel oil mbar 10.2 10.5 ■ Tab. 10 Boiler type M92A Boiler size Rated heating output...
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Page 24: Operating Conditions
Operating conditions Operating conditions M70A M72B M74B M92A M94B M96A Requirements/notes Heating water flow rate No minimum heating water flow rate required Boiler return temperature (minimum value) Gas operation: 65 °C ■ Oil operation: 65 °C ■ Minimum flow temperature 70 °C Max. -
Page 25: Wearing Parts
Wearing parts Wearing parts and gaskets Fig. 12 Order form for type M70 Serial number: Boiler size Pos. Component Number Packing per boiler door Packing per boiler door Insulation ring (optional) Burner connection packing Cleaning cover packing Rear boiler floor packing Packing per cleaning aper- ture Handhole gasket... - Page 26 Wearing parts Wearing parts and gaskets (cont.) Order form for type M72 Serial number: Boiler size Pos. Component Number Packing per boiler door Packing per boiler door Insulation ring (option- Burner connection packing Cleaning cover pack- Rear boiler floor pack- Packing per cleaning aperture Handhole gasket...
- Page 27 Wearing parts Wearing parts and gaskets (cont.) Order form for type M92 Serial number: Boiler size Pos. Component Number Packing per boiler door Packing per boiler door Insulation ring (optional) Burner connection packing Cleaning cover packing Rear boiler floor packing Packing per cleaning aperture Handhole gasket 100 x 150 mm Seal ring set...
- Page 28 Enter the serial no., type and amount required. Obtain commercially available parts from your local trade supplier. Note A suitable amount of installation adhesive for the packings is provided. Viessmann Industrial Service contact details 24/7 service hotline: +49 180 384 3776 Email: industrialservice@viessmann.com...
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Page 29: Checklist For Boiler System: Hot Water Boilers
Checklist Checklist for boiler system: Hot water boilers ■ O = Monitor; check for unusual noises, odours and other unusual phenomena ■ T = Check function of equipment components, including monitoring Operation, maintenance and inspec- Months Type of tests (examples) tions/tests: Safety equipment to prevent excess Vent. - Page 30 Appendix Steam and hot water boilers Boiler type: Boiler output: Serial no.: Month: Year: Inspection checklist Operating Safety Pressure Pressure Flue gas Flue gas Flame ap- Combustion pressure valve regulator limiter heat ex- damper pearance changer...
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Page 31: Steam And Hot Water Boilers
Appendix Steam and hot water boilers (cont.) Pressure Water level Water level High water Feedwater T.D.S. facili- Blow-down gauge indicator limiter level pump valve Comments/faults: Signatures: Boiler attend- Line manager Scope and interval of test according to table on page 29... -
Page 32: Inspection Checklist
Appendix Water treatment system Steam generating system: Month: Year: Inspection checklist Feedwater Electrical Temperature Appearance pH value at Residual Oxygen bind- Residual conductivity 25 °C oxygen hardness at 25 °C S/cm °C mg/l mg/l mmol/l µ... -
Page 33: Water Treatment System
Appendix Water treatment system (cont.) Top-up water Condensate Boiler water Residual Electrical pH value at Residual Electrical pH value at Excess Acid capaci- hardness conductivi- 25 °C hardness conductivi- 25 °C phosphate ty (K S 8.2 ty at 25 °C ty at 25 °C mmol/l S/cm... - Page 34 Commissioning/service reports Records of commissioning, inspection and maintenance Note The reports can be used as templates. Commissioning Maintenance/service Maintenance/service Date: Commissioning Maintenance/service Maintenance/service Date: Commissioning Maintenance/service Maintenance/service Date: Commissioning Maintenance/service Maintenance/service Date: Commissioning Maintenance/service Maintenance/service Date:...
- Page 35 Keyword index Keyword index Alkalisation..............12 Mixed condensation........... 12 Ammonia..............10 Multi boiler system............8 Multi boiler systems............ 11 Boiler water............ 12, 14, 21 Burner............17, 20, 22 Nitrogen..............10 Calcium carbonate............. 11 Operating conditions............ 8 Commissioning.............8 Operating information..........11 – Requirements............8 Operation, interruption..........
- Page 36 Represented by Manufacturer Viessmann Ltd Viessmann Industriekessel Mittenwalde GmbH Hortonwood 30 Berliner Chaussee 3 TF1 7YP Telford D-15479 Mittenwalde Telephone: +441952 675000 Telephone: +49 33764 83-0 Telefax: +441952 675040 Telefax: +49 33764 83-202 www.viessmann.co.uk www.viessmann.com...
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