Buderus Logamatic 2107 Controls: System Wiring Diagrams and Configuration Examples
Overview
This document provides system examples and wiring diagrams for the Buderus Logamatic 2107 control system, featuring modules such as BM292, FM242, and FM244. It details electrical connections for heating and solar components.
Diagram Description (Page 1): A central connection PCB (Module BM292) is shown with terminals 1-12. To the left, Module FM242 (optional 2-stage/modulating burner) is depicted with connections for burner control (Stage 2 or modulating burner, BRII), operating signal, and regulator. It connects to the BM292 PCB. Low voltage and control voltage (120V) connections are indicated. To the right, Module FM244 (Solar) is shown with connections for a solar pump (PSS), solar collector sensor (FSK), and solar hot water tank sensor (FSS). It also connects to the BM292 PCB. Mains connection (120V, max. 20A circuit breaker) is shown. Wire gauges (AWG) and current ratings (max 5A) are specified for various connections.
Configuration Examples
Configuration Example V2: Logamatic 2107 Controls
Basic Equipment:
- Module CM222 controller
- Module NM282 mains and relay card
Functions:
- Burner single-stage
- Heating Zone Pump
- Hot Water Tank Primary Pump
Diagram Description (V2): A schematic shows a boiler, Logalux hot water tank, and various components connected to the Logamatic 2107 system. Key components include: Boiler, Logalux hot water tank, Mains connection, Burner connection (BR), External Temperature Sensor (FA), Common Supply Temperature Sensor (FK), Heating Zone (HK), Heating Zone Pump (PH), Hot Water Tank Primary Pump (PS), Remote Control BFU (BF), Thermostatic Radiator Valve (THV). Wires are labeled with AWG sizes.
Configuration Example V4: Logamatic 2107 Controls
Basic Equipment:
- Module CM222 controller
- Module NM282 mains and relay card
Functions:
- Burner single-stage
- Heating Zone Pump HK1
- Hot Water Tank Primary Pump
- Secondary Hot Water Circulation Pump
Additional Equipment:
- Module FM241 mixing card (Functions: Actuator HK2, Heating Zone Pump HK2)
- Module FM242 two-stage (Functions: Burner two-stage or modulating burner)
Diagram Description (V4): This schematic illustrates a more complex system. It includes a Boiler, Logalux hot water tank, and multiple heating zones (HK1, HK2). Components shown are: Mains connection, Burner connection (BR), External Temperature Sensor (FA), Common Supply Temperature Sensor (FK), Heating Zone 1 (HK1), Heating Zone Pump 1 (PH1), Heating Zone 2 (HK2), Heating Zone Pump 2 (PH2), Hot Water Tank Primary Pump (PS), Secondary Hot Water Circulation Pump (PZ), Remote Control BFU (BF1), Remote Control BFU (BF2), Thermostatic Radiator Valve (THV), Supply Temperature Sensor (FV), High Limit Thermostat (TWH). The diagram notes "1) only with single-room control".
Configuration Example V5: Logamatic 2107 Controls
Basic Equipment:
- Module CM222 controller
- Module NM282 mains and relay card
Functions:
- Burner single-stage
- Heating Zone Pump HK1
- Hot Water Tank Primary Pump
- Secondary Hot Water Recirculation Pump
Additional Equipment:
- Module FM241 mixing card (Functions: Actuator HK2, Heating Zone Pump HK2)
- Module FM242 two-stage (Functions: Burner second stage or modulating burner)
- Module FM244 solar (Functions: Solar pump)
Diagram Description (V5): This is the most comprehensive schematic, integrating solar heating. It shows a Boiler, Logalux hot water tank (potentially bivalent), and solar components. Key elements include: Mains connection, Burner connection (BR), External Temperature Sensor (FA), Common Supply Temperature Sensor (FK), Heating Zone 1 (HK1), Heating Zone Pump 1 (PH1), Heating Zone 2 (HK2), Heating Zone Pump 2 (PH2), Hot Water Tank Primary Pump (PS), Secondary Hot Water Circulation Pump (PZ), Remote Control BFU (BF1), Remote Control BFU (BF2), Thermostatic Radiator Valve (THV), Supply Temperature Sensor (FV), High Limit Thermostat (TWH), Solar Collector Sensor (FSK), Solar Hot Water Tank Sensor (FSS), Solar pump (PSS), Expansion Vessel (AG), Pump station. The diagram notes "1) only with single-room control".
Safety Warning
WARNING: Water at or above 122°F (50°C) can scald! Always install a thermostatic mixing valve to limit the water temperature at the tap.
Key to Abbreviations
| Abbreviation | Description |
|---|---|
| AG | Expansion Vessel (DEV) |
| BF | Remote Control BFU |
| BR | Burner Connection |
| FA | External Temperature Sensor |
| FB | Hot Water Tank Sensor |
| FK | Common Supply Temperature Sensor |
| FV | Supply Temperature Sensor |
| HK | Heating Zone |
| PH | Heating Zone Pump |
| PS | Hot Water Tank Primary Pump |
| PZ | Secondary Hot Water Circulation Pump |
| STB | Manual reset high limit (STB) |
| PSS | Solar Hot Water Tank Pump |
| FSK | Solar Collector Sensor |
| FSS | Solar Hot Water Tank Sensor |
| SI | Safety Equipment |
| SH | Mixing Valve |
| SP1 | Lightning Protection |
| SMF | Air separator |
| TRK | Common Supply Temperature Regulator |
| THV | Thermostatic Radiator Valve |
| TWH | High Limit Thermostat |
| Check Valve |
