Related Manuals for Buderus Logano plus SB325
Summary of Contents for Buderus Logano plus SB325
- Page 1 Floor standing condensing boiler Installation and service instructions for contractors Logano plus SB325 Read carefully before carrying out installation and maintenance.
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Page 2: Table Of Contents
Inspection and service reports ....35 5.4.2 Connecting the flue gas system ....19 Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 3: General Safety Instructions And Explanation Of Symbols
11.3.8 Boiler controller ....... 39 Additional symbols Symbol Explanation ▶ Step in an action sequence Cross-reference to another part of the document • List entry – List entry (second level) Table 1 Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 4: Safety Regulations
Explosive and highly flammable material ▶ Never use or store highly flammable materials (paper, thinners, paints etc.) near the boiler. Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 5: About The Appliance
• Control unit. Determined use Operating conditions The Logano plus SB325 condensing boiler has been designed for hot water heating systems in e.g. apartment buildings or industrial units. Observe all standards and directives applicable to the The boiler is only approved for open flue operation. -
Page 6: Suitable Fuels
Lower condensation reheating surface (condensing plus heating surface, 3rd pass) With the Logano plus SB325 floor standing condensing boilers, all parts that come into contact with products of combustion or condensate are made from high grade stainless steel. This makes operation possible without limitations on the minimum return temperature, the flow rate or the burner minimum load. - Page 7 Boiler flow connection Test point (sensor pocket) Safety valve connection Connection for pressure switch Return connection 2 (high temperature return) Flue gas connection [11] Drain/return connection 1 (low temperature return) [12] Condensate outlet Logano plus SB325 – 6 720 806 328 (2013/07)
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Page 8: Specifications, Dimensions, Connections
Height 1254 Width/height for transport 680/1215 Base frame length Base frame width Clearance Ø D Flue gas outlet (internal) Length Combustion chamber Ø Depth combustion chamber door Tab. 5 Unit data Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 9: Unit Data
2) Safety limit (high limit safety cut-out). Maximum possible flow temperature = safety limit (high limit safety cut-out setting) - 18 K. Example: Safety limit (high limit safety cut-out) = 100 °C, max. possible flow temperature = 100 - 18 = 82 °C. Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 10: Values For Calculating The Flue Gas
6 720 804 354-17.1ITL Fig. 4 Pressure drop on the water side ] Standby loss [p ] Pressure drop on the heating water side [ ] Average boiler temperature ] Flow rate Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 11: Information On Installation And Operation
The sizing and settings of the burner have a significant influence on the ▶ Never store flammable materials or liquids in the immediate vicinity of the heat source. service life of the heating system. Every load cycle (burner on/off) Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 12: Combustion Air Quality
5-minute intervals. 3.10 Using antifreeze If a control unit from the Buderus Logamatic 4000 series is used, burner modulation in standard mode is not Chemical additives that are not certified as harmless by enabled for 3 minutes. - Page 13 (or alternatively on the burner control unit). Unit Value Maximum time constant of temperature controller Maximum time constant on pressure switch/ limiter Minimum temperature difference between burner turning on and off Tab. 11 Conditions of use Logano plus SB325 – 6 720 806 328 (2013/07)
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Page 14: Hydraulic Connection To The Heating System
To protection against damage: ▶ Ensure that every heat source is equipped with an individual expansion vessel. ▶ Set the pre-charge pressure of the expansion vessel correctly. Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 15: Transport
▶ Only lift the boiler with a crane if you are suitably qualified to operate the crane. ▶ Hang lifting rope hooks on the designated lifting eyes on the top of the boiler. The end stop's tilt angle must be 90 °. Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 16: Moving The Boiler With A Forklift Truck
▶ Slowly lift the boiler with the forklift truck. 6 720 804 354-06.1ITL Fig. 9 Moving the boiler with two pallet trucks 6 720 804 354-05.1ITL Fig. 8 Moving the boiler with a forklift truck Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 17: Installation
If separation between the installation location and the boiler is required to prevent the transfer of structure- borne noise, apply anti-vibration measures (e.g. anti- vibration supports) before installing the boiler. Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 18: Levelling The Boiler
▶ Close the combustion chamber door and secure with door bolts [2] ( Fig. 12, page 18). 6 720 804 354-08.1ITL Fig. 12 Sliding the thermal insulation mat underneath the boiler Hinge pin Door bolts Dowel pin Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 19: Flue Gas And Water Connections For Heating System
(e.g. short, rising, and with the fewest possible bends). Provide a separate vertical flue for each boiler. Take the thermal expansion of the system into account. Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 20: Installing The Condensate Hose And Neutralising
( Fig. 15, page 20). Please refer to the separate installation instructions for installation and For open vented systems, the safety pipe flow is connected to the [VSL] connection. maintenance of the neutralisation system. Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 21: Installing The Minimum Pressure Switch And Minimum
▶ If the LWI connection is not being used for the installation of a low Fig. 19 Locating and securing the front and rear tie-bars water level limiter, remove the plastic plug and close off the LWI connection with a blanking plug. Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 22: Fitting The Side Panels
▶ Install the first part of the boiler cover ( chapter 5.9.6) ▶ Install the control unit and temperature sensor ( chapter 5.14, page 27 and chapter 5.13, page 26). Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 23: Fitting The Back Plate
▶ Push the tabs on the lower tie-bar from below into the slots to the left and right on the side panels and secure the tie-bar with two machine screws on the front of the boiler shell. Fig. 25 Securing the lower connection plate Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 24: Opening And Reversing The Combustion Chamber Door
▶ Tighten the screws with a torque of 25 Nm. 5.11 Fitting the burner (accessory) NOTICE: System damage through incorrect burner. ▶ Only use burners which meet the technical boiler requirements of Logano plus SB325. Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 25: Fitting The Burner To The Combustion Chamber Door
▶ Close the combustion chamber door and tighten the hexagon bolts ( chapter 5.10.1, page 24). 6 720 804 354-19.1ITL Fig. 28 Burner mounting dimensions in combustion chamber door Boiler size SB325 [kW] 50-70 90-115 Tab. 13 Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 26: Securing The Cover, Additional Type Plate And Data Plate
Plastic spiral Sensor retainer Sensor pocket ▶ Never kink excess lengths of capillaries. ▶ Route the sensor lead to the control unit. ▶ Connect the sensor lead to the control unit. Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 27: Fitting And Electrically Connecting The Control Unit (Accessory)
Fig. 33 Installing the control unit Cover Flexible hooks Rectangular openings in the front boiler cover Locking tabs Oval holes in front boiler cover Cable feed in the front boiler cover Holes for self-tapping screws Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 28: Commissioning
Fig. 35 Securing the cable with cable clips ▶ Put the cover ( Fig. 33) back on the control unit. ▶ Tighten screws ( Fig. 33) to secure the control unit cover hood. Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 29: Filling The Heating System
Tab. 14 Controller settings for Logamatic 4321 and 4322 control units NOTICE: Excessive system water top up can lead to boiler damage. Always monitor the system top up water consumption. Repair any leaks immediately. Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 30: Commissioning Report
Carry out a function test on all safety equipment and record this. Instruct the system user and hand over technical documentation. Enter the fuel used in the table ( "General" operating instructions). Confirm professional commissioning. Company stamp/signature/date Tab. 15 Commissioning report Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 31: De-Commissioning
▶ Check the general condition of the heating system. ▶ Visual inspection and function check of the heating system. ▶ Check all system parts that carry fuel or water for leaks and visible corrosion. Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 32: Cleaning The Boiler
▶ Ensure that the sealing washer with gasket is seated in the cap. ▶ Undo the wing nuts on the cleaning cover [1] and remove the cleaning cover. Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 33: Replacing The Gasket In The Flue Gas Collector And The Reversing Chamber Door
▶ Remove the foil from the control unit. ▶ Position the reversing chamber door and seal by screwing tight. ▶ Restart the heating system. ▶ Secure the thermal insulation. ▶ Mount the burner. ▶ Fit the front panels. Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 34: Checking And Correcting The Water Pressure
Manometer needle 8.4.3 Installations with automatic pressurisation systems For installations in which an automatic pressurisation system is integrated, observe the manufacturer's instructions. The water quality requirements also apply here (see operator's log). Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 35: Inspection And Service Reports
▶ Check water records (e.g. amount of top-up water) in the operator's log. 13. Check the neutralising system (where fitted). 14. Final check of the inspection work, take measurements and record values and test results. Tab. 16 Inspection report Logano plus SB325 – 6 720 806 328 (2013/07) - Page 36 See technical burner documentation. record values and test results. Check the safe and proper functioning in operation (safety equipment). 10. Confirm professional commissioning. Company stamp/signature/date Tab. 17 Heating system maintenance report Logano plus SB325 – 6 720 806 328 (2013/07)
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Page 37: Correcting A Burner Fault
In addition, burner faults are signalled by an indicator on the burner. ▶ Press burner reset button (see burner operating instructions). If the burner still fails to start after three attempts, contact a contractor. Logano plus SB325 – 6 720 806 328 (2013/07) -
Page 38: System Examples
Practical implementation is subject to currently applicable technical rules. 1) The maximum achievable flow temperature in combination with Logamatic control units is approx. 18 K below the cut-off temperature of the high limit safety cut-out. Logano plus SB325 – 6 720 806 328 (2013/07) - Page 39 Logano plus SB325 1) With fully wired connecting cable for Buderus control units, only permissible for 300 kW. For boiler sizes > 300kW, EN 12828: 2003 specifies that a low water indicator or suitable alternative, e.g. minimum pressure limiter is used.
- Page 40 Buderus Cotswold Way, Warndon, Worcester WR4 9SW All Enquiries: 0844 892 3004 www.buderus.co.uk In the UK and IE, Buderus is a brand name of Bosch Thermotechnology Ltd.