Table of Contents
Related Manuals for Viessmann Vitocrossal CRU 800
Summary of Contents for Viessmann Vitocrossal CRU 800
- Page 1 VIESMANN Service instructions for contractors Vitocrossal Type CRU, 800 and 1000 Gas condensing boiler For open flue and room sealed operation Permissible operating pressure 6 bar VITOCROSSAL Please keep safe. 6151139 GB 7/2020...
- Page 2 Safety instructions Safety instructions Please follow these safety instruc- tions closely to prevent accidents and material losses. Safety instructions explained Danger Note This symbol warns against the risk Details identified by the word "Note" of injury. contain additional information. Please note This symbol warns against the risk of material losses and environmen- tal pollution.
- Page 3 Viessmann. water pipes to discharge static loads. Repair work Please note Repairing components that fulfil a safety function can compromise the safe operation of the system. Replace faulty components only with genuine Viessmann spare parts.
- Page 4 Safety instructions Safety instructions (cont.) Safety instructions for operating the system If you smell gas Condensate Danger Danger Escaping gas can lead to explo- Contact with condensate can be sions which may result in serious harmful to health. injury. Never let condensate touch your Do not smoke.
- Page 5 Safety instructions Safety instructions (cont.) Danger The simultaneous operation of the boiler and appliances that exhausts air to the outside can result in life threatening poisoning due to a reverse flow of flue gas. Fit an interlock circuit or take suita- ble steps to ensure an adequate supply of combustion air.
- Page 6 Index Index Information Symbols ....................Intended use ..................Product information ................Burner ....................■ System examples ................■ Spare parts lists .................. ■ Commissioning, inspec- Steps - commissioning, inspection and maintenance ......tion, maintenance Reports ........................ 25 Specification ........................ 27 Final decommissioning Final decommissioning and disposal .............
- Page 7 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 8 ■ "MatriX-Disk burner" installation instructions ■ "MatriX-Disk burner" service instructions System examples Available system examples: See www.viessmann- schemes.com. Spare parts lists Information about spare parts can be found at www.viessmann.com/etapp or in the Viessmann spare part app.
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Page 9: Table Of Contents
Commissioning, inspection, maintenance Steps - commissioning, inspection and maintenance Commissioning steps Inspection steps Maintenance steps Page • • • 1. Burner inspection and maintenance................10 • 2. Checking the electrical connections................10 • 3. Filling the heating system with water and venting the system........10 •... -
Page 10: Burner Inspection And Maintenance
Commissioning, inspection, maintenance Burner inspection and maintenance Steps applicable to the MatriX-Disk burner are descri- "MatriX-Disk burner" service instructions bed in separate instructions. Checking the electrical connections Check all electrical connection for firm seating. Filling the heating system with water and venting the system Please note Enter the amount of fill water, the water hardness and Unsuitable water quality can damage the boiler... -
Page 11: Filling The Trap With Water
Commissioning, inspection, maintenance Filling the trap with water Fig. 1 Trap lower section Condensate drain hose 1. Fill the trap with water. To do this, pour water into 2. Check that the condensate can drain freely from the boiler via the combustion chamber or the the condensate drain hose. -
Page 12: Checking The Sensor Well And All Connections On The Heating Water Side For Tightness
Commissioning, inspection, maintenance Checking the sensor well and all connections on the heating water side for tightness Note For a clearer overview of the connections, the boiler is shown without cladding. Fig. 2 Female connection for control equipment: R ½ Boiler flow: PN 6, DN 100 with sensor well for boiler water temperature sensor Female connection for pressure limiter: R... -
Page 13: Checking High Limit Safety Cut-Out Settings
Commissioning, inspection, maintenance Checking the sensor well and all connections on… (cont.) Check the connection for the sensor well and the mini- mum pressure switch (low water indicator) for tight- ness. Checking high limit safety cut-out settings The high limit safety cut-out must not be set higher Installation and service instructions for the Vito- than 110 °C. - Page 14 Commissioning, inspection, maintenance Commissioning the system (cont.) 1. Check the heating system pressure. Permiss. operating pres- 6 bar (0.6 MPa) sure Minimum operating 0.5 bar (50 kPa) pressure Danger If the operating pressure is too low, excess temperatures in the flue system can cause leaks.
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Page 15: Checking The Flue Gas Damper
Commissioning, inspection, maintenance Checking the flue gas damper If installed: Check motorised flue gas damper for cas- "MatriX-Disk burner" service instructions cade operation. The flue gas damper must be closed in its zero volt state (plug Note The code for the flue gas damper must be set at the burner control unit. -
Page 16: Opening The Boiler
Commissioning, inspection, maintenance Opening the boiler Fig. 4... -
Page 17: Opening The Combustion Chamber
Commissioning, inspection, maintenance Opening the combustion chamber 8. 3. 4. 6x Fig. 5 Danger Note Serious injuries can result from the burner door If the burner is operated in room sealed mode, remove falling shut. the room sealed set. Secure the burner door against unintentional closure. -
Page 18: Cleaning The Combustion Chamber And Heating Surfaces
Commissioning, inspection, maintenance Cleaning the combustion chamber and heating surfaces Please note Remove coatings and surface discolouration (yellow- ■ Scratches inside the combustion chamber or on brown) with slightly acidic, chloride-free cleaning components that come into contact with flue gas agents based on phosphoric acid (e.g. -
Page 19: Cleaning The Condensate Drain Pipe And Trap
Commissioning, inspection, maintenance Checking the gas connections for tightness (cont.) 5. Check for tightness: ■ Outlet joints of the gas train ■ Joint between the fan and the fitting ■ Joint between the fan and the supply air collector Service instructions for the "MatriX-Disk burner"... -
Page 20: Checking The Condensate Drain And The Neutralising System (If Installed)
If necessary, clean the condensate drain pipe Note again. Neutralising medium from Viessmann Werke GmbH & Co. KG, part no. 9521702. 2. Check the function of the neutralising system. 4. Check entire condensate drain pipe for leaks. -
Page 21: Performing Final Checks
Commissioning, inspection, maintenance Checking the gaskets on the flue gas side (cont.) Fig. 7 1. Check the joints between flue gas collector 2. Check the flue gas temperature sensor and plug-in boiler back panel for tightness. connection for correct seating. Note 3. -
Page 22: Checking The Thermal Insulation For Firm Seating
Commissioning, inspection, maintenance Checking the thermal insulation for firm seating Checking the flue system for unrestricted flow and tightness Check a few days after commissioning Danger ■ Unrestricted flow in the flue system Leaking or blocked flue systems, or an inade- ■... - Page 23 Water quality requirements Water quality requirements Note Prevention of damage due to scaling Observing the following requirements is necessary to safeguard your warranty rights. Prevent excessive scale build-up (calcium carbonate) The warranty excludes damage due to corrosion and on the heating surfaces. For heating systems with scaling.
- Page 24 Water quality requirements (cont.) Failure to observe the requirements of VDI Guideline Correctly sized sealed unvented systems operating at 2035 can result in damaging limescale deposits. In the correct pressure, e.g. systems with expansion ves- such cases, the service life of the installed boilers will, sel, offer good protection against the ingress of air- most often, already have been reduced.
- Page 25 Reports Reports Fill water report Fill water Top-up water Meter reading Total water volume Date — — — — — — — — — — — — — — — — — — — Max. fill volume: ......m Water quality report Total hardness pH value Water treatment...
- Page 26 Reports Reports (cont.) The pH value should be between 8.2 and 9.5. Settings and measurement values Commissioning Maintenance/Service Static pressure mbar Supply pressure (flow pressure) Natural gas E mbar Natural gas LL mbar Tick gas type. Carbon dioxide content CO At the upper rated heat- Actual % by vol.
- Page 27 Specification Specification Boiler Vitocrossal, type CRU 800 CRU 1000 Rated heating output range 80/60 °C 125 to 750 156 to 938 50/30 °C 137 to 800 171 to 1000 cond Rated heating input range Qn (sized for up to 1500 m 127 to 762 159 to 952 above sea level)
- Page 28 Specification Specification (cont.) Vitocrossal, type CRU 800 CRU 1000 Gas flow rate, natural gas LL (G25) at 15 °C, 1.013 bar At rated heating output 93.8 117.3 ■ At partial load 15.6 19.6 ■ Flue gas parameters Flue gas temperature ( T 50/30 °C) At rated heating output °C...
- Page 29 Final decommissioning Final decommissioning and disposal Viessmann products can be recycled. Components For decommissioning the system, isolate the system and substances from the system are not part of ordi- from the power supply and allow components to cool nary household waste.
- Page 30 Manufacturer's certificate according to the 1st BImSchV [Germany] We, Viessmann Werke GmbH & Co. KG, D-35107 Allendorf, confirm that the product Vitocrossal, type CRU complies with the following conditions stipulated by the 1st German Immissions Order (BImSchV): limits in accordance with paragraph 6 (1).
- Page 31 Keyword index Keyword index Boiler, opening............16 Instructing the system user........22 Boiler casing, closing..........20 Intended use..............7 Boiler water requirements.......... 23 Burner door – Closing..............18 Measuring – Flue gas temperature..........15 Mixer, checking............21 Checking – Condensate drain............20 –...
- Page 32 Viessmann Werke GmbH & Co. KG Viessmann Limited D-35107 Allendorf Hortonwood 30, Telford Telephone: +49 6452 70-0 Shropshire, TF1 7YP, GB Fax: +49 6452 70-2780 Telephone: +44 1952 675000 www.viessmann.com Fax: +44 1952 675040 E-mail: info-uk@viessmann.com...