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General| Category | Controller |
|---|---|
| Number of Zones | 4 |
| Enclosure Rating | NEMA 1 |
| Model | 294 |
| Input Voltage | 24 VAC |
| Output Voltage | 24 VAC |
| Operating Temperature | 0 to 50°C |
Describes safety alerts, symbols, and warnings for proper operation and injury prevention.
Guidelines for choosing a suitable location for the control unit.
Connects the pressure sensor to terminals 1, 2, 3 for system pressure monitoring.
Connects the outdoor sensor to terminals 4, 5 for ambient temperature readings.
Connects an Energy Management System (EMS) to terminals 4, 5.
Details methods for mounting universal sensors on pipes or in wells.
Connects boiler and DHW sensors to the control unit.
Procedure to test sensor wiring resistance for proper function.
Connects central heating demand signal to terminals 10, 11.
Connects DHW aquastat or signal to terminals 12, 13.
Connects setpoint control signal to terminals 14, 15.
Connects tekmarNet devices via terminals 16, 17 for system communication.
Connects expansion modules for additional boilers via terminals 18, 19, 20.
Connects boilers via Modbus using terminals 21, 22, 23.
Connects the control to the network via the Ethernet port.
Connects boiler modulation signals via terminals 25-32.
Connects boiler enable signals via terminals 33-40.
Connects boiler pumps or valves via terminals 41-48.
Connects the combustion air damper via terminals 49, 50.
Connects the system pump via terminals 51, 52.
Connects the DHW pump via terminals 53, 54.
Connects the main power supply via terminals 55, 56.
Describes initial power-up sequence and the lock screen functionality.
Explains how to navigate from the main home screen.
Defines the meaning of various status icons displayed on the screen.
Displays current system inputs and sensor readings.
Displays the status of current system outputs.
Visualizes boiler supply temperature trends over time.
Lists the operational status of multiple boilers.
Displays boiler status in a rotating carousel view.
Shows the run hours and cycle counts for each boiler.
Lists the available menu categories for configuration and settings.
Explains the function of common navigation buttons.
Sets display units for temperature and pressure.
Configures date, time, and daylight savings time.
Configures network type, IP address, and DNS settings.
Configures central heating operation parameters and targets.
Configures domestic hot water operation parameters.
Configures constant setpoint heating loads and system pump behavior.
Configures remote setpoint heating loads and priority.
Selects which boilers are available for operation in sequences.
Configures boiler make, model, fuel type, and stage configuration.
Sets boiler fuel type and assigns boilers to groups.
Configures boiler modulation characteristics like output and speed.
Configures PID or Proportional staging parameters.
Defines firing order for condensing and non-condensing boiler groups.
Sets fixed lead or last boiler behavior for plant operation.
Configures combustion air damper delay and pump exercising.
Sets thresholds for temperature and pressure alerts.
Configures alerts for boiler run hours and cycle counts.
Guides through the initial system setup and configuration process.
Manages user passcode for accessing the control's interface.
Resets control to factory defaults or network settings.
Lists recent error and alert notifications for troubleshooting.
Allows manual control of system components like pumps and dampers.
Details Automatic, Purge, Max Heat, Hand, and Off override modes.
Displays control details like model and software version for support.
Provides QR code linking to product information and manuals.
Describes the various inputs that trigger heating calls.
Explains how central heating calls are managed using outdoor reset.
Default settings for boiler design and supply based on terminal unit type.
Automatically disables central heating based on outdoor temperature.
How DHW calls are initiated via aquastat, sensor, or tekmarNet.
Controls system pump behavior during DHW heating.
Selects the piping configuration for DHW systems.
Sets DHW priority over central heating for faster recovery.
Purges residual heat from boilers after DHW call removal.
Restricts boilers for DHW to prevent short cycling.
Operates open-loop dedicated DHW systems.
Manages DHW calls and boiler staging in dedicated systems.
Describes how constant setpoint calls are created.
Manages priority of setpoint over central heating.
Purges residual heat after a setpoint call is removed.
Accepts analog signals for remote setpoint control.
Adjusts for signal drop over wire length for EMS inputs.
Utilizes tekmarNet devices for system efficiency and comfort.
Sets up boilers for operation and configures their basic parameters.
Configures boiler type (stages) and thermal mass characteristics.
Sets up modulating outputs, fire delay, and modulation delay.
Sets minimum and maximum boiler output levels.
Configures modulation motor speed and start modulation rate.
Assigns boilers to groups and sets post purge time.
Sets operating temperature limits (target, minimum, maximum) for boilers.
Chooses between PID and Proportional staging methods.
Configures PID staging parameters like differential and stage delay.
Sets the minimum time delay between firing boiler stages.
Configures proportional staging parameters like differentials and delays.
Defines firing order for condensing and non-condensing boiler groups.
Manages rotation of boilers for equal runtime distribution.
Selects pump or isolation valve for controlling plant flow.
Monitors system pressure using an optional sensor.
Describes system pump behavior during various calls.
Manages the operation of the combustion air damper.
Lists physical, electrical, and environmental specifications of the control.
Details warranty terms, coverage, and product return process.
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