Test, Testing the control – tekmar 261 Boiler Control User Manual

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Testing the Control

The Boiler Control 261 has a built-in test routine which is used to test the
main control functions. The 261 continually monitors the sensors, and
displays an error message whenever a fault is found. See the following
pages for a list of the 261’s error messages and possible causes. When
the

Test button is pressed, the test light is turned on. The individual

outputs and relays are tested in the following test sequence.

TEST SEQUENCE

Each step in the test sequence lasts 10 seconds.

During the test routine, the test sequence is paused by pressing the

Test button. Only if there is a boiler demand can the control be

paused in a step. If there is a setpoint demand, the control can only be paused during step 2 or step 3. If the

Test button is not pressed

again for 5 minutes while the test sequence is paused, the control exits the entire test routine. If the test sequence is paused, the

Test

button can be pressed again to advance to the next step. This can also be used to rapidly advance through the test sequence. To
reach the desired step, repeatedly press and release the

Test button until the appropriate device and segment in the display turn on.

Step 1

- The boiler pump (

Boil Pmp) is turned on for 10 seconds.

Step 2

- The

Stage 1 contact is turned on for 10 seconds.

Step 3

- The

Stage 2 contact is turned on for 10 seconds. After 10 seconds, the Stage 1, Stage 2, and Boil Pmp contacts are shut

off.

Step 4

- After the test sequence is completed, the control resumes its normal operation.

Test

not testing

testing

testing paused

off

red