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Floor standing condensing boiler Installation and service instructions for contractors Logano plus SB325 Read carefully before carrying out installation and maintenance.
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)
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)
• 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.
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.
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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)
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)
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)
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)
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.
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(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)
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)
▶ 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)
▶ 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)
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)
▶ 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)
(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)
( 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)
▶ 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)
▶ 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)
▶ 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)
▶ 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)
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)
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)
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)
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)
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)
▶ 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)
▶ 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)
▶ 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)
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)
▶ 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)
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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)
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)
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)
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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.
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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.