Tekmar 421 Mixing Reset Module Manual de usuario descargar pdf (Pagina 2)

Table of Contents

Table of Contents ...........................................................2

Display and DIP Switches ..............................................2

Dip Switch Settings ................................................2

Access Level ...........................................................3

Display and Symbols Description............................4

User Interface ........................................................5

Display Menus ................................................................6

View Menu ..............................................................6

Adjust Menu ............................................................7

Miscellaneous Menu ...............................................9

Testing the Control .........................................................9

Sequence of Operation ................................................. 11

tekmarNet

4 Communication ............................... 11

Outdoor Reset ...................................................... 11

Mixing Operation .................................................. 13

Boiler Temperature Control .................................. 14

Boiler Enable ......................................................... 15

Pump Operation ................................................... 15

Pump Exercising ................................................... 15

Error Messages ............................................................ 16

Troubleshooting ............................................................ 19

Warranty .......................................................................20

Set the DIP switch settings prior to making adjustments

to the control through the user interface. Setting the DIP

switches determines which menu items are displayed in

the user interface.

If you change a DIP switch setting while the control is

powered up, the LCD display returns to the View menu.

Lock / Unlock

Use the Lock / Unlock DIP switch to lock and unlock the Access

Level of the 421 and all connected tN4 devices, including

tN4 thermostats. For details, see “Access Levels”

•

• Once locked, the access level in all devices cannot be

viewed or changed.

•

• To determine if the control is currently locked a small

segment representing a padlock is viewed in the bottom

right hand corner of the display.

•

• To unlock the Access Level, set the DIP switch to

Unlock.

•

• To lock the Access Level, set the DIP switch to Lock.

Dip Switch Settings

Display and DIP Switches

52 55 56 57

Boiler

5453

C Com Boil MixCls

Opn

Com Out

Variable Speed

2.5 A

7.5 A

max

61 62

Pump

tN4

Boil Sens Sup / Ret

Oﬀ / Flushing

Powered Output

Floating Output:

24 V (ac) 8 VA

Made in Canada

Meets Class B: Canadian

ICES & FCC Part 15

Test

Mixing Reset Module 421

Item

tektra 991-02

Var. Pump: 115V (ac) 2.5 A

Relay Rating: 115V (ac) 5 A

Do not apply power

System P1

63 64

Pump

Var. Pump Fuse

T2.5 A 250 V

H7007B

Boil Sens Sup / Ret

Oﬀ / Flushing

1 2 3 4 5 6 7 ... 19 20

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