Seltron ACD20 Bedienungsanleitung
ACD20
Constant temperature controller
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EN
CONSTANT TEMPERATURE
CONTROLLER ACD20
INTRODUCTION
ACD20 controllers are modern microprocessor-controlled devices with an integrated
actuator for the mixing valve and circulation pump control. They are produced in
digital and SMT technology. They are designed to control constant temperature in
various heating and cooling applications. They are most commonly used for the
control of the return temperature to the boiler or the supply temperature to the system.
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EN
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EN
CONTENTS
Introduction .....................................................................................................................................................3
Appearance of the controller....................................................................................................................6
Initial controller setup..................................................................................................................................7
Basic screens .................................................................................................................................................. 11
Help ...................................................................................................................................................................14
Entering and navigating through the menu .....................................................................................14
Menu structure and description............................................................................................................ 15
Requested temperatures......................................................................................................................... 16
Operation mode ........................................................................................................................................... 18
Information....................................................................................................................................................20
Display............................................................................................................................................................. 23
Statistics........................................................................................................................................................ 26
User P parameters..................................................................................................................................... 28
Service S parameters ................................................................................................................................. 31
Factory settings ..........................................................................................................................................38
Clutch and manual valve displacement ............................................................................................39
Controller installation............................................................................................................................... 40
Controller power connection................................................................................................................. 42
Operation modes with sensor failure..................................................................................................43
AUX function at COM input....................................................................................................................44
Technical data..............................................................................................................................................45
Hydraulic schemes .....................................................................................................................................46
6 | Instructions for use
EN APPEARANCE OF THE
CONTROLLER
1. Button . Return back.
2. Button . Move to the left, decreasing.
3. Button . Move to the right, increasing.
4. Button . Menu entry, confirmation of selection.
5. USB port for software updates and connection to a personal computer.
6. Graphic display.
7. Button . Help.
8. Manual operation clutch.
9. Manual movement button.
10. Pre-wired power cord with plug.
11. Pre-wired cable for circulation pump.
12. Pre-wired connection box for sensors and communication.
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| 7Instructions for use
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Use the buttons and to select the requested
language. Confirm the selected language by pressing .
If you've mistakenly selected the wrong language, you
can return to the language selection with the button.
STEP 1 - LANGUAGE SELECTION
INITIAL CONTROLLER SETUP
The controller is equipped with an innovative "Easy start" function, which allows the
initial setting of the controller in just a few steps.
Upon the first connection of the controller to the power supply network, the first step
of the controller setup is displayed after the program version and logo
The manual movement button must be removed for the setup. The Easy start function
is activated by pressing the buttons and and holding them both down together
for 5 seconds.
Later, you can change the language in the
“Display” menu.
8 | Instructions for use
EN
STEP 4: SELECTING THE OPENING DIRECTION OF THE MIXING
VALVE.
You can select the opening direction of the mixing
valve. Use the buttons and to navigate between
directions. Confirm the selected direction with the
button.
If you have mistakenly selected the wrong direction, you
can return to the direction selection with the button.
STEP 2 - SELECTING HEATING OR COOLING OPERATION
Use the buttons and to select the requested
operating mode - heating or cooling.
Confirm the selected operating mode by pressing .
If you've mistakenly selected the wrong operating mode,
you can return to the operating selection with the button
.
STEP 3: HYDRAULIC SCHEME SETUP.
You can select the hydraulic scheme for the controller
operation. Use the buttons and to navigate
between schemes.
Confirm the selected scheme with the button.
If you have mistakenly selected the wrong scheme, you
can return to the diagram selection with the button .
INITIAL CONTROLLER SETUP
Later, you can change the operating mode in the
"Operating mode" menu.
Later, you can change the hydraulic scheme with
the S1.1 service parameter.
Later, you can change the opening direction of the
mixing valve with the service parameter S1.3.
| 9Instructions for use
EN
STEP 6: SETTING THE UPPER LIMIT FOR THE REQUESTED
HEATING TEMPERATURE
With the buttons and you can set up the upper
limit of the requested temperature in heating mode.
Confirm the setup by pressing .
If you have accidentally set the wrong upper limit, you can
return to the upper limit setting by pressing .
STEP 7: SETTING THE REQUESTED HEATING TEMPERATURE
With the buttons and you can set up the requested
temp. in heating mode. Confirm the setup by pressing .
If you have accidentally set the wrong requested
temperature, you can return to the requested temperature
setting by pressing .
For schemes with stand-pipe control, the supply temperature symbol
is displayed.
STEP 5: SETTING THE LOWER LIMIT FOR THE REQUESTED
HEATING TEMPERATURE
With the buttons and you can set up the lower
limit of the requested temperature in heating mode.
Confirm the setup by pressing .
If you have accidentally set the wrong lower limit, you
can return to the lower limit setting by pressing .
INITIAL CONTROLLER SETUP
Later, you can change the lower limit setting of the
requested heating temperature with the service
parameter S2.1.
Later, you can change the upper limit setting of the
requested heating temperature with the service
parameter S2.2.
Later, you can change the requested heating
temperature in the "Requested temperatures"
menu.
10 | Instructions for use
EN
STEP 8: SETTING THE LOWER LIMIT FOR THE REQUESTED
COOLING TEMPERATURE
With the buttons and you can set up the lower
limit of the requested temperature in cooling mode.
Confirm the setup by pressing .
If you have accidentally set the wrong lower limit,
you can return to the lower limit setting by pressing .
STEP 9: SETTING THE UPPER LIMIT FOR THE REQUESTED
COOLING TEMPERATURE
With the buttons and you can set up the upper
limit of the requested temperature in cooling mode.
Confirm the setup by pressing .
If you have accidentally set the wrong upper limit, you
can return to the upper limit setting by pressing .
STEP 10: SETTING THE REQUESTED COOLING TEMPERATURE
With the buttons and you can set up the
requested temperature in heating mode.
Confirm the setup by pressing .
If you have accidentally set the wrong requested
temperature, you can return to the requested
temperature setting by pressing .
For schemes with stand-pipe control, the supply temperature symbol
is displayed.
INITIAL CONTROLLER SETUP
Later, you can change the lower limit setting of the
requested cooling temperature with the service
parameter S2.3.
Later, you can change the upper limit setting of
the requested cooling temperature with the service
parameter S2.4.
Later, you can change the requested cooling
temperature can be later changed in the
"Requested temperatures" menu.
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