Tekmar 261 Boiler Control Manual do Utilizador descarregar pdf (Página 16)

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

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Lechat 15 May 2024 | 19:58:07

site extrêmement lent, souvent les pages demandées n'existe pas ; bref, sans intérêt voir nul

Tekmar 261 Boiler Control Manual do Utilizador Página 16

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