Please file in Service Binder Operating Instructions and User’s Information Manual Vitocontrol-S, VD2/CT3/CM2, Model 300-K, MW1 Outdoor-reset logic digital cascade control VITOCONTROL-S, VD2/CT3/CM2 Certified as a component part of Viessmann boilers only 5351 341 v1.
Introductory information For your safety Please follow these safety instructions closely to avoid the risk of injury to persons and damage to property. If you smell gas Don’t smoke! Don’t use naked flames or cause sparks (e.g.
Index Page Useful tips Instructions in brief Reference guide Introductory information For your safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2, 4 Ready for operation The main controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introductory information For your safety Please ensure that this manual is read and understood before commencing installation. Failure to comply with the issues listed below and details printed in this manual can cause product/property damage, severe personal injury, and/or loss of life. Ensure all requirements below are understood and fulfilled (including detailed information found in manual subsections).
Important Precautions Safety Take note of all symbols and notations intended to draw attention to potential hazards or important product information. These include ”WARNING,” ”CAUTION,” and ”IMPORTANT”. See pages 2 and 4 for details. Approvals Viessmann boilers, burners and controls are approved for sale in North America by CSA International. Codes The installation of this unit shall be in accordance with local codes. In the absence of local codes, use: CSA C22.
Ready for operation Overview of controls and indicators Vitotronic 100, GC1 Manual override Changing the boiler water temperature (without function in multi-boiler system) Changing the domestic hot water temperature (without function in multiboiler system) (see pg.21) Value selector buttons Information Confirmation button Factory settings (see below) Display window Heating program selector buttons w without function in multi-boiler system (see pg.
Ready for operation Overview of controls and indicators Vitocontrol-S, VD2/CT3/CM2 Emissions test switch (see pg. 34) Heating circuit selector buttons (pg.8) Display window (pg.8) Normal room temperature (pg. 11) Heating programs (pg. 10) Boiler sequence 1-23-4 Control on/off switch (pg. 14) Fuse F1 Energy saving mode (pg. 13) Party mode (pg. 12) Hinged cover of programming unit Operating status indicator (green) Fault indicator (red) Time program for central heating (pg.
Ready for operation Overview of controls and indicators (continued) Adjustment of the display window contrast Open the hinged cover on the programming unit, and press and, at the same time, adjust the contrast with the or button. Factory settings Press this button to reset all altered values to their factory settings. Please note that all altered values are reset to the factory settings. Flashing data Data flashing in the display window means that new settings can be entered.
Ready for operation Your heating system is preset ... Vitocontrol-S, VD2/CT3/CM2 The control units are preset in the factory to a standard operating mode. The heating system, therefore, is ready for operation. You can change the factory settings to suit your individual preferences. Vitotronic 100, GC1 Heating Program The heating program is set for “Central heating and domestic hot water”, i.e. heating takes place, controlled via the Vitocontrol-S, VD2/CT3/CM2.
Ready for operation Selecting the heating program (winter, summer) Vitotronic 100, GC1 Select the required heating program with the , or button.
Ready for operation Selecting the heating program (winter, summer) Vitocontrol-S, VD2/CT3/CM2 In the ”Central heating and domestic hot water” heating program, central heating takes place with alternating ”normal room temperature” and ”reduced room temperature” according to the selected time program. You can set the required room temperature as follows: To change the ”normal room temperature” (day temperature) Normal room temp. ºC Factory setting: 20ºC / 68ºF from 06:00 to 22:00 hrs.
Ready for operation Setting the party mode Vitocontrol-S, VD2/CT3/CM2 Switch on the party mode when you require central heating and domestic hot water (if a DHW tank is installed) for a short time independently of the preset heating and time program. To activate the party mode 1. Open the hinged cover on the programming unit. 2. Press the heating circuit selector button; the button is illuminated. Party mode 3.
Ready for operation Activating the energy saving mode Vitocontrol-S, VD2/CT3/CM2 The energy saving mode is only possible in the ”rw“ heating program. Switch on the energy saving mode when you require particularly economic central heating for a short time. In the energy saving mode the preset room temperature is automatically lowered. To activate the energy saving mode 1. Press the heating circuit selector button; the button is illuminated. Energy saving mode 2.
Switching on and off Starting up the heating system Vitocontrol-S, VD2/CT3/CM2 The initial start-up and matching of the control unit to local conditions and the structural characteristics of the building must be carried out by your heating contractor. 1. Check the pressure of the heating system on the manometer. If the needle is below the red marker, the system pressure is too low – in which case add more water or contact your heating contractor. 2.
Settings Changing the boiler water temperature Vitotronic 100, GC1 In a multi-boiler system with the Vitocontrol-S, VD2/CT3/CM2, the boiler water temperature is determined by the Vitocontrol-S, VD2/CT3/CM2 for all boiler control units. It is not possible to make the setting on the Vitotronic 100, GC1. Selecting the time programs Vitocontrol-S, VD2/CT3/CM2 You can select time programs for central heating, domestic hot water (if a DHW tank is installed) and the DHW re-circulation pump (if installed).
Settings Selecting the time programs (continued) Vitocontrol-S, VD2/CT3/CM2 Changing and scanning the time program for central heating 11. Open the hinged cover on the programming unit. 12. Press the heating circuit selector button; the button is illuminated. Press ; the ”Central heating time program” display appears in the display window. 13. 14. / Time Prog. Central Htg.
Settings Selecting the time programs (continued) Vitocontrol-S, VD2/CT3/CM2 Changing and scanning the time program for central heating (continued) To exit the setting mode at any time 1. Press ; the display changes to ”Exit? Yes”. 2. Press to confirm; the display changes and shows the boiler temperature. To scan the time phases Follow the procedure described on page 13, but without using the and buttons. The time phases at a glance 1. Open the hinged cover on the programming unit. 2.
Settings Selecting the time programs Vitocontrol-S, VD2/CT3/CM2 (continued) Changing and scanning the time program for domestic hot water heating and the DHW re-circulation pump The automatic mode is selected in the time program for domestic hot water and the DHW re-circulation pump, i.e. domestic hot water heating takes place in parallel with the central heating time program, but starts 30 minutes earlier. The DHW re-circulation pump runs parallel with the domestic hot water time program.
Settings Selecting the time programs (continued) Vitocontrol-S, VD2/CT3/CM2 Changing and scanning the time program for domestic hot water heating and the DHW re-circulation pump (continued) 16. / Time prog. DHW 1-7 Press / until one of the following displays appears in the display window: ”1-7” if you wish to set identical time phases for all days of the week.
Settings Selecting the time programs (continued) Vitocontrol-S, VD2/CT3/CM2 Changing and scanning the time program for domestic hot water heating and the DHW re-circulation pump (continued) To scan the time phases Follow the procedure described on page 15 and 16, but without using the and buttons. The time phases at a glance 1. Open the hinged cover on the programming unit. 2. Press the heating circuit selector button; the button is illuminated. 1 0 3 6 9 12 15 18 21 24 1-7 3.
Settings Changing the domestic hot water temperature Vitocontrol-S, VD2/CT3/CM2 In a multi-boiler system the Vitotronic 100, GC1 is without function. The domestic hot water temperature is set on the Vitocontrol-S, VD2/CT3/CM2. 1. Open the hinged cover on the programming unit. Desired DHW temp. ºC Press ; the previous temperature setting flashes in the display window. 12. 13. 14. / Press the / button until the required temperature value appears.
Settings Setting the energy saving mode for the holiday period (continued) Vitocontrol-S, VD2/CT3/CM2 1. Open the cover on the programming unit. 2. Press the heating circuit selector button; the button is illuminated. 3. Press ; the ”Holiday program” display appears in the display window. 4. Press ; the display changes to the ”Departure date” (actual day of the week). Departure date Fr 5. / Tu 8. Press / until the required departure date appears.
Settings Resetting the date and time Vitocontrol-S, VD2/CT3/CM2 The time and date are preset in the factory and can be changed manually. There is no need for manual resetting in conjunction with a radio clock receiver (accessory). 1. Open the hinged cover on the programming unit. Time Press ; the ”Time” appears in the display window. 2. 3. / Press to confirm; the display changes and shows the ”Date”. 4. DDate 5. We 6. Press / until the required time appears.
Settings Boiler sequence selection control Boiler sequence 1-23-4 Boiler sequence 12 34 Vitocontrol-S, VD2/CT3/CM2 Actual boiler sequence The digits shown in the basic display show the boiler numbers of the connected boilers in the current actual boiler sequence. The hyphens between the boiler numbers indicate the status of each boiler. The boilers in front of the first hyphen are those which are activated by the Vitocontrol-S, VD2/CT3/CM2.
Settings Changing the heating pattern Vitocontrol-S, VD2/CT3/CM2 The heating pattern of the boiler is influenced by the outdoor temperature and the settings of the ”shift” and ”slope” of the ”heating curve”. Heating curves represent the relationship between the outdoor temperature and the boiler water or supply temperature. Put simply: the lower the outdoor temperature, the higher the boiler water or supply temperature.
Settings Changing the heating pattern Vitocontrol-S, VD2/CT3/CM2 Changing the heating pattern 1. Open the hinged cover on the programming unit. 2. Press the heating circuit selector button; the button is illuminated. Slope 4. Shift Press or Press 3. 5. / for ”Slope” for ”Shift”. As a guide, please refer to the table headed ”Change heating pattern if...” on page 25. Press / until the required value is displayed. Press to confirm; the display changes and shows the boiler temperature.
Settings Changing the heating pattern (continued) Change heating pattern if ... Action ... not enough heat is generated in the cold season Adjust the slope of the heating curve upwards by one increment ... too much heat is generated in the cold season Adjust the slope of the heating curve downwards by one increment ... not enough heat is generated at transitionary times of the year and in the cold season Adjust the shift of the heating curve to a higher value (e.g.+3 K) ...
Scanning Scanning temperatures and operating status information Vitotronic 100, GC1 You can scan various actual temperatures and operating status information depending on the system components connected: Data displayed Meaning Please note 0__01 LON participant number Equipment number within the LON system 3__65.°C Boiler water temperature –– 6__45.
Scanning Scanning temperatures and operating status information Vitocontrol-S, VD2/CT3/CM2 You can scan various actual temperatures and operating status information depending on the system components connected and the settings made. Participant no.
Troubleshooting guide Special displays Vitocontrol-S, VD2/CT3/CM2 Please contact your heating contractor to arrange a service call. MService Mo °C Remote control It is not possible to make settings on the control unit, only on the remote control. Example ”Normal room temperature” on the ”ts” selector knob can only be set on the remote control. Without function This display flashes when you have pressed a button to which no function is assigned. Example if no DHW tank is connected. Ext.
Troubleshooting guide Diagnosis and correction Vitotronic 100, GC1 If a fault occurs on a boiler, it will be indicated in the display window and by the flashing red fault lamp. In the display window you can read off the fault code yourself and inform your heating contractor accordingly. 1. / _1...38.U Press / to display the individual fault codes if several faults have occurred simultaneously. Press to confirm; the display changes and shows the boiler temperature. 2.
Troubleshooting guide Diagnosis and correction Burner does not switch on Vitotronic 100, GC1 Heating program ”9” is set (the corresponding button is illuminated) Set ”rw” heating program (page 10) Vitoair draught stabilizer defective (only on boilers with pressure jet burner) Inform heating contractor. Change setting of Vitoair to manual operation: Press in rotary knob A on motor and turn fully beyond setting ”4”.
Troubleshooting guide Diagnosis and correction DFault °C Vitocontrol-S, VD2/CT3/CM2 If a fault occurs on the heating system, it will be indicated in the display window and by the flashing red fault lamp. Using the scan facility, you can read off the fault code yourself and inform your heating contractor accordingly. Tu 1. Open the hinged cover on the programming unit. Outdoor sensor Press for fault search. The error source is displayed in plain language and in the form of a fault code. 2.
Troubleshooting guide Diagnosis and correction (continued) Vitocontrol-S, VD2/CT3/CM2 Fault Cause Remedy Heating circuit does not start up Heating system switch ”8” Switch on Power supply disconnect switch, if installed, is switched off Switch on power supply disconnect switch Heating program ”9” is set (corresponding button is illuminated) Set ”rw” or “w“ heating program (page 10) Fuse in the domestic power circuit or in the control unit has blown or tripped Inform heating contractor Fault
Troubleshooting guide Diagnosis and correction (continued) Vitocontrol-S, VD2/CT3/CM2 Fault Cause Remedy The rooms are cold during the day but warm at night Time incorrectly set Set correct time Control unit incorrectly programmed or set Check and, if necessary, correct the settings for the temperatures , the time program and the heating program ”Fault” flashes in the display window Fault on heating system Make a note of the fault code and inform your heating contractor ”Without function” app
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