Logano plus SB315, SB615, SB745 - Buderus

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8 System examplesArea of application• Logano plus SB315, SB615 and SB745 floorstanding condensing boilers• Logamatic boiler and heating circuit control unitFunction descriptionOptimum use of the condensing effect in conjunction withhigh temperature heating circuits is ensured by separatereturns on the water side.The actuators and heating circuit pumps are constantlycontrolled by one Logamatic control unit. As analternative, the heating circuit can also be controlled by athird party device (e.g. in the case of systemmodernisation if only the boiler is being replaced and theexisting control unit will continue to be used).DHW is heated via a primary store system which iscontrolled by the FM445. For optimum energy utilisation,the return is connected to low temperature returnconnector RK 1.With the Logano plus SB315 and SB615,low temperature return connector RK 1 islocated at the bottom of the back panel, andwith the Logano plus SB745, it is in themiddle of the back panel.You can check the system hydraulics (5-2-1-2-6) in the Buderus hydraulics database atwww.buderus.de/hydraulikdatenbank.58Technical guide Floor standing gas/oil condensing boilers Logano plus SB315, SB615, SB745 – 6 720 802 589 (2012/01)
System examples8Selecting control equipmentLogamatic 4211 control unitPossible full equipment level (auxiliary equipment shown in blue)Logamatic 4321 control unitPossible full equipment level (auxiliary equipment shown in blue)6 720 640 417-43.1ilLogamatic 4211 1) for a single boiler system, with temperaturecontroller TR (90 °C) and adjustable high limit safety cut-out(100/110/120 °C); to control a single stage, 2-stage or modulatingburner. Space for up to two function modules.Standard equipmentSafety equipmentCM421 – Controller moduleZM422 – Central module for the boiler with burner control,one heating circuit without mixer and one DHW circuit 2) withDHW circulation pump (display, operating and power components forCM421)MEC2 – Digital programming unit for setting parameters andchecking the control unit; integral room temperature sensor and radioclock receiverOptional equipmentFM442 – Function module for two heating circuits with mixer; incl.one FV/FZ sensor set (up to two modules per control unit)FM445 – Function module 2) for DHW heating via a primary storesystem to control two cylinder primary pumps and one DHWcirculation pump; incl. LAP/LSP cylinder connection set with DHWtemperature sensors (up to one module per control unit)Burner cable for stage 2Room installation set with wall retainer for MEC2 and boiler displayOnline cable with holder for MEC2 and connection plugBFU – Remote control incl. room temperature sensor for controllinga heating circuit from the living spaceBFU/F – Remote control like the BFU, but with an integral radioclock receiverSeparate room temperature sensor for BFU and BFU/F remotecontrol unitsFV/FZ – Sensor set with flow temperature sensor for heating circuitswith mixer or auxiliary temperature sensors for boiler circuit functions;incl. connection plug and accessoriesFG – Flue gas temperature sensor for a digital display of the fluegas temperature; in a stainless steel sleeve; version suitable forpositive pressureSensor pocket R½ , 100 mm long for Logamatic cylindrical sensorsTable 21 Possible equipment level of the Logamatic4211 control unit related to the systemexample in fig. 371) For boiler water temperatures above 80 °C, adjust the high limitsafety cut-out to 110 °C.2) The DHW function of the ZM422 central module is not availablefor DHW heating via a primary store system with the FM445function module.6 720 640 417-42.1ilLogamatic 4321 1) for a single boiler system, with temperaturecontroller TR (90/105 °C) and adjustable high limit safety cut-out(100/110/120 °C); to control a single stage, 2-stage or modulatingburner. Incl. burner cable for stage 2, boiler water temperature sensorand outside temperature sensor. Space for up to four function modules.Standard equipmentSafety equipmentCM431 – Controller moduleZM432 – Central module for switching burners and boiler circuitfunctions; with manual operating levelMEC2 – Digital programming unit for setting parameters andchecking the control unit; integral room temperature sensor and radioclock receiverOptional equipmentFM441 – Function module 2) for one heating circuit with mixer andone DHW circuit with DHW circulation pump; incl. DHW temperaturesensor (up to one module per control unit)FM442 – Function module for two heating circuits with mixer; incl.one FV/FZ sensor set (up to four modules per control unit)FM445 – Function module 2) for DHW heating via a primary storesystem to control two cylinder primary pumps and one DHWcirculation pump; incl. LAP/LSP cylinder connection set with DHWtemperature sensors (up to one module per control unit)Room installation set with wall retainer for MEC2 and boiler displayOnline cable with holder for MEC2 and connection plugBFU – Remote control incl. room temperature sensor for controllinga heating circuit from the living spaceBFU/F – Remote control like the BFU, but with an integral radioclock receiverSeparate room temperature sensor for BFU and BFU/F remotecontrol unitsFV/FZ – Sensor set with flow temperature sensor for heating circuitswith mixer or auxiliary temperature sensors for boiler circuit functions;incl. connection plug and accessoriesFG – Flue gas temperature sensor for a digital display of the fluegas temperature; in a stainless steel sleeve; version suitable forpositive pressureSensor pocket R½ , 100 mm long for Logamatic cylindrical sensorsTable 22 Possible equipment level of the Logamatic4321 control unit related to the systemexample in fig. 371) For boiler water temperatures above 80 °C, adjust the high limitsafety cut-out to 110 °C.2) DHW heating possible either via a primary store system withFM445 function module or via DHW cylinder with FM441function module.The technical guide “Logamatic 4000 modular controlsystem” contains more detailed information.Technical guide Floor standing gas/oil condensing boilers Logano plus SB315, SB615, SB745 – 6 720 802 589 (2012/01) 59
Page 1 and 2:
Technical guide2012/01Logano plus S
Page 3 and 4:
Table of contents7 DHW heating . .
Page 5:
Basic principles22 Basic principles
Page 8 and 9: 2 Basic principles2.3 Economic viab
Page 10 and 11: 3 Technical descriptionLogano plus
Page 12 and 13: 3 Technical descriptionHot gas rout
Page 14 and 15: 3 Technical description3.1.4 Therma
Page 16 and 17: 3 Technical descriptionBoiler size
Page 22 and 23: 3 Technical description3.2.5 Specif
Page 24 and 25: 3 Technical description3.2.6 Specif
Page 26 and 27: 3 Technical description3.3 Boiler p
Page 28 and 29: 3 Technical description3.3.4 Standb
Page 30 and 31: 4 Burner4 Burner4.1 Burner selectio
Page 32 and 33: 4 Burner4.2.4 Combustion air contro
Page 34 and 35: 4 Burner4.3 Logatop BE-A blue flame
Page 36 and 37: 4 Burner4.4 Third party burners4.4.
Page 38 and 39: 5 Regulations and operating conditi
Page 48 and 49: 7 DHW heating7 DHW heating7.1 Syste
Page 50 and 51: 8 System examples8.1.3 DHW heatingG
Page 52 and 53: 8 System examples8.3 Single boiler
Page 54 and 55: 8 System examples8.4 Single boiler
Page 56 and 57: 8 System examplesSelecting control
Page 60 and 61: 8 System examples8.6 2-boiler syste
Page 64 and 65: 8 System examplesArea of applicatio
Page 66 and 67: 8 System examples8.8 2-boiler syste
Page 70 and 71: 8 System examplesArea of applicatio
Page 72 and 73: 9 Installation9 Installation9.1 Tra
Page 74 and 75: 9 Installation1290°3x34554676 720
Page 76 and 77: 9 Installation9.2 Design of install
Page 78 and 79: 9 Installation9.3.2 Installation di
Page 80 and 81: 9 Installation9.4 Information on in
Page 82 and 83: 9 InstallationSafety component Make
Page 84 and 85: 9 Installation9.6 Accessories for s
Page 86 and 87: 9 Installation9.6.3 Boiler supports
Page 88 and 89: 9 InstallationBoiler sizeFlue gas s
Page 90 and 91: 9 Installation9.7 Further accessori
Page 92 and 93: 10 Flue system10 Flue system10.1 Re
Page 94: 10 Flue systemSizing the plastic fl
Page 97 and 98: Condensate drain1111.2.2 Equipment
Page 99 and 100: Condensate drain1111.2.3 Neutralisi
Page 101 and 102: Condensate drain11Neutralising syst
Page 103 and 104: Keyword indexThermal insulation....
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Logano plus SB315, SB615, SB745 - Buderus

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