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Related Manuals for Dantherm Vent R2
Summary of Contents for Dantherm Vent R2
- Page 1 Vent R/C 2/4/6 User’s guide No. 971762 • rev. 2.2 • 18.09.2015...
- Page 2 Der tages forbehold for trykfejl og ændringer Dantherm can accept no responsibility for possible errors and changes Irrtümer und Änderungen vorbehalten Dantherm n’assume aucune responsabilité pour erreurs et modifications éventuelles...
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Page 3: Table Of Contents
Table of contents: 1. GENERAL............................ 2 Control circuit board STXC2....................2 1.1.1 Function switch........................ 2 MMI STCU..........................3 MMI STCU description......................4 Flow chart (option)......................... 6 Communication module STIO (option).................. 7 2. USER’S GUIDE..........................8 Main menu. -
Page 4: General
STXC2 User’s guide Version 2.0 General. The control system is based on the following control units: A STXC2 control circuit board that is mounted in the ventilation unit. A STPT circuit board with a two-channel pressure sensor. It is mounted in the ventilation unit. ... -
Page 5: Mmi Stcu
STXC2 User’s guide Version 2.0 If the serial connection to the MMI is not present and the function switch is in position MAN, the ventilation unit is controlled by the following factory settings on the control circuit board STXC2: Humidity set point: 60%. -
Page 6: Mmi Stcu Description
STXC2 User’s guide Version 2.0 MMI STCU description. The MMI STCU unit is delivered in a separate cabinet ready for DIN-rail mounting on a wall. The display texts on the MMI STCU can be selected in Danish, English or Swedish. The MMI STCU is equipped with an alphanumeric display, a three-coloured indication LED and eight push buttons. - Page 7 STXC2 User’s guide Version 2.0 The three push buttons Manual, 0 and Auto are used to select the running mode of the ventilation unit. The lowest line on the display indicates the actual running mode with the symbol , which points to one of the three push buttons.
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Page 8: Flow Chart (Option)
STXC2 User’s guide Version 2.0 Flow chart (option). A flow chart equipped with LED’s can be connected to the MMI. The flow chart indicates the actual condition for security thermostats, fans, filters etc. The flow chart gives an easy to read and a clear view of run and fault conditions in the ventilation unit. -
Page 9: Communication Module Stio (Option)
STXC2 User’s guide Version 2.0 Communication module STIO (option). Connection of the communication module STIO via the serial communication line it enables the operation and monitoring by the BMS. The function switch on the ventilation unit is in position AUTO when using the communication module. By activating the analogue and digital inputs of the STIO the control will more or less be taken from the MMI STCU. -
Page 10: User's Guide
STXC2 User’s guide Version 2.0 User’s guide. Main menu. When there has been no activity for a few minutes the display will show the following primary menu: Monday 12:21 Actual room temp C +20,7 Supply m3h 02500 Actual prog no 01 The actual room temperature, supply air volume and the running program step are shown on the display. -
Page 11: Display Set-Up
STXC2 User’s guide Version 2.0 Display set-up. 2.2.1 Language selection. From the main menu the sub menu Technical data is selected. The sub menu Language appears: Main menu Monday 12:21 Technical data Language English Danish Swedish Selecting a language with the push buttons and . Then press Enter and the language is selected. 2.2.2 Adjusting the display contrast. -
Page 12: Time Setting
STXC2 User’s guide Version 2.0 Time setting. From the main menu the sub menu Adjustm. / clock is selected. Select the sub menu Clock adjust: Main menu Monday 12:21 Adjustm. / clock Clock adjust Monday Time 13:31 Date Month Year By pressing the push buttons ... -
Page 13: Filter Configuration
Choose an acceptable differential pressure loss for the filter(difference between clean and dirty filter). Dantherm Air Handling recommends a differential pressure loss of 60 Pa. The function switch on the ventilation unit is now turned to position AUTO. In the following example a ”filter check value” at 2500m3h is used. This is the air volume setting used in the week program (See chapter 2.6 Setting a week program). - Page 14 STXC2 User’s guide Version 2.0 With 48 seconds remaining the control system gives a feedback about the filter test. Main menu Monday 12:21 Technical data Filter configuration Check at m3h 02500 Accepted d/Pa 0060 Start filtertest ENTER Measuring wait sec. Filter test Ok If the selected ”filter check value”...
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Page 15: Setting Of Manual Running Mode
STXC2 User’s guide Version 2.0 Setting of manual running mode. From the main menu the sub menu Adjustm. / clock is selected. Select the sub menu Manual override. After pressing Manual the ventilation unit will run with the following data: Main menu Monday 12:21 Adjustm. -
Page 16: Setting A Week Program
STXC2 User’s guide Version 2.0 Setting a week program. From the main menu the sub menu Adjustm. / clock is selected. Select the sub menu Program step: Main menu Monday 12:21 Adjustm / clock Program step Program step no Ventilation m3h 02500 Day(s) Monday... -
Page 17: Example Of Setting A Week Program
STXC2 User’s guide Version 2.0 2.6.1 Example of setting a week program. The following shows an example of a week program including cooling at summer nights (See chapter 3.2.3 Cooling at summer nights). For further information see chapter 2.6 Setting a week program. - Page 18 STXC2 User’s guide Version 2.0 Program step no.: 03. Main menu Monday 12:28 Adjustm / clock Program step Program step no Ventilation m3h Day(s) Workd. Time 04:00 Temp set point C Night cooling Program step no.: 04. Main menu Monday 12:35 Adjustm / clock Program step Program step no...
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Page 19: Alarms
STXC2 User’s guide Version 2.0 Alarms. If the ventilation unit does not work properly, an alarm is shown on the display and the indication LED shifts colour from green to yellow or red. Monday 12:21 Alarm Fail preheat Actual room temp C +20,7 Supply m3h 02500... - Page 20 STXC2 User’s guide Version 2.0 The indication LED is in this case switched off. To get information about the alarms select the menu Alarms in the main menu: Adjustm. / clock Ventilation / climate Alarms Technical data Two sub menus gives information about the actual alarms and alarms listed in a “alarm history” that have occurred since the last power failure: Main menu Monday 12:21...
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Page 21: Critical Failure Reset
STXC2 User’s guide Version 2.0 2.7.1 Critical failure reset. If the ventilation unit is stopped due to a critical failure, then follow these instructions: Frost thermostat has sensed a frost condition The frost thermostat has a manual reset. The failure is reset on the frost thermostat. Fire thermostat has sensed a fire condition The fire thermostat has a manual reset. - Page 22 STXC2 User’s guide Version 2.0 Reading the actual conditions. From the main menu the sub menu Ventilation / climate is selected. Other sub menus appear: Main menu Monday 12:21 Ventilation / climate Room conditions Ambients Ventilation The sub menu Room conditions is selected: Main menu Monday 12:21 Ventilation / climate...
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Page 23: Reading The Actual Conditions
STXC2 User’s guide Version 2.0 Here the actual values for the ventilation are indicated: Supply air % / Return air % Output voltage (control signal) to the fan motors. 0% = 0V and 100% = 10V. Supply press Pa / Return press Pa The measured differential pressure across the fans. - Page 24 STXC2 User’s guide Version 2.0 When the sub menu Control outputs is selected: Main menu Monday 12:21 Technical data Control outputs Reheat % Preheat % None Heat recovery % Damper % Supply fan % Exhaust fan % Extra cooling % Analog output 1 % Analog output 2 % Here the actual values for output signals 0-100% is indicated.
- Page 25 STXC2 User’s guide Version 2.0 When the sub menu Function switch is selected: Main menu Monday 12:21 Technical data Function switch Function auto Function low Function high Here the function switch position is indicated. A selected position is shown as On, the other positions are shown as Off.
- Page 26 00726 Here the data for the control system are listed. Run time: The total running time (hours) for the ventilation unit. Comm error % and rest of the data points: Data used by Dantherm Air Handling AS/. 24 of 30...
- Page 27 STXC2 User’s guide Version 2.0 When the sub menu STIO Data is selected: Main menu Monday 12:21 Technical data STIO Data Humidity % Fan override % Temp set point C Ventilation m3h 02500 Exhaust volume Fresh air % Temp. Ctr. sensor Night cooling Auto Manuel...
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Page 28: Control Strategy
STXC2 User’s guide Version 2.0 Control strategy. Ventilation. When all the safety components (frost, fire and fan failures) are in ON-position and the ventilation unit is turned ON, the fresh air damper and the exhaust air damper opens. After 30 seconds the fans start. -
Page 29: Heat Recovery
STXC2 User’s guide Version 2.0 3.2.1 Heat recovery. In an air-to-air plate heat exchanger the By-pass damper takes 10% (hysteresis) of the P-band between heating mode and cooling mode (more fresh air for cooling). When heating is needed, the bypass damper closes by pulsing (runs slowly). When cooling is needed, the bypass damper opens by pulsing. -
Page 30: Clean Blowing Function - Heat Wheel
STXC2 User’s guide Version 2.0 Clean blowing function - heat wheel. The heat wheel is rotated for 1 minute every hour if there has been no rotation during one-hour (5V control signal) to prevent a build up of particulate. De-icing function. If the differential pressure across the heat exchanger rises above a set point value measured by an extra mounted pressurestat (extra), then de-icing will take place. -
Page 31: Icing Function
STXC2 User’s guide Version 2.0 Displacement of temperature set point. By providing an input signal (2-10V) to analogue input IN2 on the control circuit board STXC2, the temperature displacement +/-5°C, related to the setpoint, is enabled. If the temperature input is left open (no connection) the displacement is disabled. The temperature displacement is shown on the following graph: Input signal Temp. - Page 32 STXC2 User’s guide Version 2.0 30 of 30...