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General| Brand | Watts |
|---|---|
| Model | Tekmar 256 |
| Category | Control Unit |
| Language | English |
Explains the different fields of the Boiler Control 256 display.
Defines the symbols used on the control's LCD display.
Explains how the control powers up and its basic operation controlling supply water temperature.
Covers boiler demand, operation, characterized heating curve, and target temperature.
Details outdoor design temperature and its effect on boiler supply temperature.
Details different terminal unit types and their default settings for the control.
Covers settings for BOIL INDR and BOIL DSGN for heat loss calculations.
Defines the maximum and minimum allowed boiler target water temperatures.
Explains the fixed and auto differential settings for boiler operation.
Explains the WWSD function for occupied and unoccupied periods.
Instructions for checking package contents and identifying included items.
Details the Enclosure C and instructions for its mounting.
Safety notes on wiring, power, and conduit for sensor installation.
Provides recommendations for mounting the outdoor sensor for accurate readings.
Instructions for wiring the outdoor sensor to the control terminals.
Details mounting methods for the Universal Sensor: strapped to pipe, immersion well, or conduit.
Instructions on how to test sensors using a multimeter and temperature measurements.
Explains how to measure sensor resistance and troubleshoot wiring issues.
Guides on testing power supply voltage and boiler demand input.
Instructions for testing the boiler output circuit for proper operation.
Explains connections for 24 V (ac) power and boiler demand input.
Details connections for boiler output, sensors, and unoccupied switch.
Explains the function of the Advanced/Installer DIP switch.
Guides through adjusting room temperatures, outdoor design, and units.
Explains how to view outdoor, boiler supply, and target temperatures.
Covers adjustments for room temps, outdoor design, terminal units, and boiler design.
Covers settings for boiler minimum, differential, and warm weather shut down.
Explains the control's built-in test routine for boiler function.
Outlines a systematic routine for diagnosing heating system problems.
Details steps like problem establishment, system understanding, and isolation.
Lists and explains potential error messages displayed by the control.
Provides technical specifications for the Outdoor Sensor 070.
Provides technical specifications for the Universal Sensor 071.
Details specifications for the Boiler Control 256, including power, relay, and sensors.
Outlines the terms of the limited warranty and the product return process.
