For the owner and the heating engineer Operating and Installation Manual VRC 400 Programmable weather compensator with separat HW time control GB
Contents Contents Notes on the documentation . . . . . Symbols used........................................... Storage of the documents.................... 4 4 4 Safety . . . . . . . . . . . . . . . . . . . . . . . . 5 Operating manual. . . . . . . . . . . . . . . 6 1 Control overview. . . . . . . . . . . . 6 2 Display overview. . . . . . . . . . . . 7 3 Description of the control . . . . 8 2 4 Operation. . . . . . . . . . . . . . . . . . 9 4.1 Setting the operating modes ...... 9 4.
Contents Installation manual . . . . . . . . . . . . . 25 7 Information on installation and operation . . . . . . . . . . . . . . 25 7.1 CE label............................................. 25 7.2 Intended use.................................... 25 8 Safety instructions and regulations . . . . . . . . . . . . . . . . 26 8.1 Safety instructions ........................ 27 8.2 Regulations...................................... 27 9 9.1 9.2 9.3 Installation . . . . . . . . . . . . . . . .
Notes on the documentation Notes on the documentation The following information is intended to help you throughout the entire documentation. Further documents apply in combination with this installation and operation manual. We accept no liability for any damage caused by failure to observe these instructions. Symbols used Please observe the safety instructions in this manual for the installation of the control.
Safety Safety The weather compensator must be installed by a qualified engineer, who is responsible for adhering to the existing standards and regulations. We accept no liability for any damage caused by failure to observe these instructions.
1 Control overview Operating manual 1 Control overview 1 2 Key 1 Display 2 Dial (turn and click) I Info button F Special functions button P Programming button/installer level Fig. 1.
Display overview 2 2 Display overview 8 7 6 9 1 10 2 3 11 12 5 4 Fig. 2.1 Overview of display Operating Manual for VRC 400 weather compensator Key 1 Installer level and service/diagnosis level (see 11.1) 2 Info level (see 4.7) 3 Circulation pump symbol 4 Time/temperature display 5 Days of the week 6 Actual temperature 7 Operating modes (see 4.1) 8 Special functions (see 4.6) 9 Setting timer programmes (see 4.
3 Description of the control 3 Description of the control The VRC 400 is a weather compensator with a weekly programme for heating, hot water and a circulation pump for connecting to Vaillant boilers with an eBus. The VRC 400 enables you to set heating programmes depending on the outside temperature. In addition, you can select special functions such as the party function, and control the timed operation of hot water and a separate circulation pump.
Operation 4 4 Operation The operating principle uses three buttons and a dial (Vaillant “Turn and Click” operating concept). The display normally shows the current operating mode (e.g. ), or, if activated, the special function and the current room temperature, the day of the week, the time and the symbol for heating, hot water and/or the circulation pump, depending on which is requested. 4.1 Setting the operating modes Table 4.1 contains an overview of the operating modes you can select.
4 Operation Symbol Meaning Heating Automatic: According to the timer programmes set in the weather compensator, the heating circuit switches between heating mode and set-back mode . The heating circuit symbol is displayed if a heating requirement is detected. Heating: The heating circuit is operated according to the room temperature, regardless of the programme set on the controller. The heating circuit symbol is displayed if a heating requirement is detected.
Operation 4 Symbol Meaning Heating Meaning Hot water/circulation pump ECO: According to the setted timer programmes, the See the table on the left heating circuit switches between heating mode and OFF. The heating circuit is switched off in setback mode, provided the anti-frost function (activated when the outside temperature is below 3 °C) is not active. The heating circuit symbol is displayed if a heating requirement is detected or the anti-frost function is active.
4 Operation 4.2 Setting the current day and time To set the current day and time with the display in normal mode, you must perform the following steps: • Press the dial until a day of the week starts flashing. • Turn the dial until you see the current day of the week. MO = Monday TU = Tuesday WE = Wednesday TH = Thursday FR = Friday SA = Saturday SU = Sunday 12 • Press the dial. The hours start flashing. • Turn the dial until you see the current hour. • Press the dial. The minutes start flashing.
Operation 4 4.3 Setting timer programmes The controller is equipped with a basic program (Table 4.2). Time window H1 H2 H3 H1 H2 H3 H1 H2 H3 Day/Block of days MO-FR SA SU - Start time 6:00 7:30 - End time 22:00 23:30 - - - 7:30 - 22:00 - You can adapt the default programmes to suit your needs. There are six steps to setting the times you want: 1. Press the programming button P 2. Select the timer programme (heating, hot water or circulation pump) 3. Select the time window 4.
4 Operation The table below illustrates the individual steps again, using the example of the hot water timer programme. If you want to change the timer programme for heating or the circulation pump, after pressing the programming button P, select the corresponding symbol (heating circuit or circulation pump) and continue as shown in the example. 14 Display Required steps Press the programming button P. The cursor (black triangle) marks the value which can be changed ( ), which also flashes.
Operation 4 Display Required steps Press the dial. The cursor marks the days of week display, which also flashes. Select a block of days or a single day of the week by turning the dial. Settings: MO - SU MO - FR SA - SU MO = Monday TU = Tuesday WE = Wednesday TH = Thursday FR = Friday SA = Saturday SU = Sunday Operating Manual for VRC 400 weather compensator Display Required steps Press the dial. The cursor marks the start time and the hour display flashes. Select the start time by turning the dial.
4 Operation If necessary, you can switch the weather compensator from the week programme to a daily programme. • With the display in normal mode, press the F button for 10 seconds. When you programme time windows, days of the week will no longer be displayed. 4.4 Setting the room temperature If the controller is installed in the boiler, the basic display shows the set room temperature, from which the required flow temperature for the set heating curve is calculated.
Operation 4 move the set heating curve parallel on a 45° axis and the flow temperature calculated by the weather compensator. Fig. 4.1 Set room temperature diagram The diagram in fig. 4.1 shows you the relationship between the set room temperature and the heating curve. If you increase the set room temperature, you Operating Manual for VRC 400 weather compensator Setting the required room temperature directly • Turn the dial (with the display in normal mode).
4 Operation The display switches back to normal mode after five seconds. Setting the room temperature for time windows (Only possible if the temperature level function is set on the installer level, see 11.1). In this case you can set different room temperatures for each time window. • Press the dial several times until T-H1 appears in the display along with a set value. The set value flashes. • Turn the dial until you see the room temperature you want for the time window H1.
Operation 4 The display switches back to normal mode after five seconds. Setting the set-back temperature “ECO” • Press the dial several times until ECO appears in the display. The set-back temperature is displayed and starts flashing. • Turn the dial until the required set-back temperature is displayed (e.g. ECO 15.0 °C). The display switches back to normal mode after five seconds. Operating Manual for VRC 400 weather compensator 4.
4 Operation 4.6 Activating special functions Press the F button to access the special functions. You can activate the following functions: Display Required steps Quick veto The quick veto function allows you to adjust the room temperature for a short time (until the next time window). Press the special function button F once. The quick veto symbol appears in the display along with the quick veto room temperature, which flashes. Turn the dial until the quick veto temperature you want is displayed.
Operation 4 Display Required steps Party function When you activate the party function the heating phase is continued beyond the next set-back phase. This also applies to the hot water and circulation pump programmes. Press the special function button F three times. The party symbol appears in the display and the function is activated after ten seconds. The function is deactivated automatically on reaching the next heating phase. If you want to deactivate the function before, just press the F button.
4 Operation Display Required steps Holiday function The holiday function deactivates the weather compensator, but not the frost protection function. The hot water and circulation pump are also deactivated. Press the special function button F five times - the holiday function symbol flashes in the display. The set value for the number of days‘ holiday also flashes. Turn the dial until the required number of day‘s holiday appears.
Operation 4, Vaillant warranty 5 - The set room temperature if the temperature level function is not activated (e.g.. TEMP 21.5 °C) - The current set-back temperature (e.g. ECO 15.0 °C) - The set hot water temperature (e.g.
6 Recycling and disposal 6 Recycling and disposal Neither the weather compensator or any of its accessories belong in the household waste. Make sure the old control and any accessories are disposed of properly.
Information on installation and operation 7 Installation manual 7 Information on installation and operation The assembly, electrical connection, control settings and commissioning may only be carried out by an approved company specialising in heating engineering. 7.
7 Information on installation and operation, 8 Safety instructions and regulations hot water system or circulation pump according to weather conditions, time and location, in connection with a Vaillant boiler with an eBUS. Any other use or extended use is considered to be improper. The manufacturer or supplier is not liable for any resulting damage. The user alone bears any risk. Intended use includes the observance of the operating and installation manual.
Safety instructions and regulations 8 8.1 Safety instructions Danger! Risk of fatal electric shock from touching live connections. Before working on the control, switch off the power supply and prevent it from being switched on again. Only remove the controller from its wall mounting or base when it is not live. Installation Manual for VRC 400 weather compensator 8.
8 Safety instructions and regulations, 9 Installation The controller may only be installed in dry rooms. screen and to push the controller into the supplied plug-in connection with a pin bar. 9 9.2 Wall mounting The VRC 400 weather compensator is designed so that it can be used as a remote-control control with or without room modulation. The controller must be installed to ensure that it can properly record the room temperature (away from heat traps, not mounted on cold walls etc.).
Installation 9 air, unhindered by furniture, curtains or other objects. In the room where the controller is installed, all radiator valves must be fully open when using room modulation. The connection to the boiler is a 2-core bus cable (eBus), see fig. 10.1. • Pull the weather compensator (1) out of the mounting box (5). • Drill two holes (3) of 6 mm diameter (as shown in fig. 9.1) and put in the supplied wall plugs. • Thread the connection cable through the duct (4).
9 Installation • Connect the lead as described in section 10. • Place the weather compensator (1) on the mounting box (5) so that the pins on the back of the upper section fit into the recesses (2). • Push the weather compensator onto the mounting box until it catches. 9.3 Installing the VRC 693 outdoor sensor This equipment may only be opened by a qualified specialist and installed as shown in the diagram.
Installation 9 > 1 m 1/3 2/3 ð W N Ł ł S O The location should not be protected from the wind, nor particularly exposed and it should not be exposed to direct sunlight. The device must be at least 1 m away from any opening in the outer wall, from which warm air can either continuously or occasionally issue. It can be installed either in or on the wall, depending on the accessibility of the location. N, NW (optional) Fig. 9.
9 Installation Caution! There is a risk of the wall and control becoming wet. Lay the cables properly and carefully to ensure that the outdoor sensor and the building are not damaged by water. The control must be fixed to the wall in the correct position, as shown in fig. 9.3. The cable entry (3, fig. 9.3) must point downwards. Fig. 9.
Installation 9, Electrical installation 10 • Remove the cover (1) of the housing and fix the housing to the wall using two screws through the fixing holes (8). • Lay a connection cable (4) of at least 2 x 0.75 mm2 and pull it up through the cable entry (3). Lay the cable properly and carefully to ensure that the sensor and the wall are not damaged by water. • Wire up the terminals as shown in the diagram in fig. 10.1.
10 Electrical installation 10.1 Connecting the weather compensator If the weather compensator is integrated directly in the boiler, the electrical connection is directly through the pin bars that are introduced in the connecting plug in the boiler. For wall mounting, the communciation to the boiler is through the eBus. All eBusconnectors are designed to take at least 2 x 0.75 mm2 (recommended) per terminal. This means that the wires can be swapped without impairing communication (fig. 10.1).
Electrical installation 10, Start-up 11 11 Start-up Certain system parameters have to be set in order for them to best suit the actual conditions. These system parameters are all together in the intaller level and should only be set by the heating engineer. The service/diagnostic level is also intended for the engineer and is designed to help during servicing. Fig. 10.
11 Start-up 11.1 Installer level Press the P button to access the installer level. • Press the P button for 10 seconds. The spanner symbol and the first parameter appear in the display. • Press the dial. You can select all the system parameters in turn. • Turn the dial to set the values you want. When you press the P button the display returns to basic mode.
Start-up 11 Display Setting by turning the dial Anti-legionnaire’s disease system 1=Activate the anti-legionnaire‘s disease function. Every Wednesday, one hour before the first time window, a connected hot water cyclinder is heated to 70 °C, the circulation pump is switched on and operated at 70 °C for at least 30 minutes.
11 Start-up Display Setting by turning the dial Minimum temperature (foot point) Adjustment range 15 ... 90 °C Default setting: 15 °C Frost protection delay Timed suppression of antifrost function (activated at outside temperatures below 3 °C) Adjustment range: 0 ... 12 h Default setting: 0 h 38 Display Setting by turning the dial Outside temperature shutdown threshold Shurtdown temperature for demand-based deactivation of heating Adjustment range: 5 ...
Start-up 11 Display Setting by turning the dial Display Setting by turning the dial Hydraulic switch 1 = Activation of sensor recording when the hydraulic switch is used, default setting 0 = Off Year setting For activation of the calendar Day setting For activation of the calendar Temperature level Activate the setting for different temperatures for each time window.
11 Start-up Display Setting by turning the dial Temperature level time window H1 (only when temperature levels are activated) Temperature level time window H2 (only when temperature levels are activated) Temperature level time window H3 (only when temperature levels are activated) 11.2 Service/diagnostic level Access the service/diagnostic level by pressing the P button and the dial. • Press the P button and the dial simultaneously for 3 seconds.
Start-up 11 Dial Press and push P button for 3 seconds Turn Test Heating request Hot water request Turn Circulation pump Press Display test Test procedure A heating request of 50 °C is simulated. The burner on the boiler starts up and the pump starts (only up to the maximum flow temperature of the boiler). A hot water request is activated, charging pump starts working, all other elements are switched off. The circulation pump is activated (if connected). All other elements are switched off.
11 Start-up Restore default settings • To restore the controller to its default condition, press the P button for 15 seconds. As soon as the display lights up twice, the controller is completely rest to its default settings. This means that you will have to perform all individual settings again. 42 11.3 Handing over to the owner The owner of the weather controller must be instructed about its functions and how to operate it.
Technical data 12, Vaillant customer service 13 13 12 Technical data Description Operating voltage Umax Maximum ambient temperature Current consumption Minimum cross-section of wires Level of protection Protection class Dimensions Height Width Depth Unit V °C 24 50 mA mm2 < 17 0.75 Vaillant customer service To ensure regular servicing, it is strongly recommended that arrangements are made for a Maintenance Agreement. Please contact Vaillant service (0870 6060 777) for further details.
EC declaration of conformity 44 Operating manual and installation manual for VRC 400 weather compensator
838587_00 GB 04 2005
