The action-related warnings are classified in The control controls a heating installation with accordance with the severity of the possible a Vaillant heat generator with eBUS interface danger using the following warning signs and in a way that is room-controlled and time- signal words: dependent.
– installing and setting up the product in ac- – Set-up cordance with the product and system ap- – Dismantling proval – Installation – compliance with all inspection and main- – Start-up tenance conditions listed in the instruc- – Inspection and maintenance tions.
▶ Install the controller in a location where it is with a contact opening of at least 3 mm (e. g. fuses or power switches). not covered by furniture, curtains, or other objects. ▶ Check that the boiler is de-energised. ▶...
▶ Pass these instructions and all other applicable docu- ments on to the end user. Validity of the instructions These instructions apply only to: Article number VRT 350 0020124475 Control Openings for grommet Wall base Pin header with termin- als for the eBUS line...
Identification plate Set-up The identification plate is located on the rear of the control- Checking the scope of delivery ler's electronics module (PCB) and is no longer accessible from the outside after it has been installed on a wall in the liv- Quant- Component ing area.
Carefully press the control into the wall base until the locking tabs on the control are heard to latch into the sides of the wall base. Electrical installation When connecting the eBUS line, there is no need to pay at- tention to the polarity.
Start-up Secure the power supply to the boiler against being switched back on again. Check that there is no voltage in the boiler. When you start the controller for the first time after electrical installation or after replacement, the Installation assistant starts automatically.
Overview of installation assistant setting options Setting Values Increment, select Factory setting Setting Min. Max. Language Languages available for English selection None, 1, 2 Zone Two-point, analogue Two-point Control strategy Route adjustment Active, Inactive Active Cylinder 1) Appears only if the value Analogue is set for the control strategy. 2) Appears only if a VR 66 is connected.
Operating The controller has two operating levels, the access level for the operator and the access levels for the competent person. The setting and read-out options for the operator, the oper- ating concept and an operating example are described in the operating instructions for the controller.
Installer level overview You can use the left-hand selection button Menu and the list entry Installer level to access the setting and read-out options. Installer level (→ Page 12) Setting level Values Unit Increment, select Factory setting Setting Min. Max. Installer level →...
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Setting level Values Unit Increment, select Factory setting Setting Min. Max. System Status Current value* Water pressure Current value ℃ Domestic hot water Current value Control modules Display Software version Heat generator Status Current value Off, Heating, Current value HEIZKREIS1 Auto day temp.
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Setting level Values Unit Increment, select Factory setting Setting Min. Max. Special function Current function Cylinder boost, None Party, Days away from home DHW circuit Cylinder Inactive Active Active, Inactive Active ℃ Target cylinder temperature ℃ Actual cylinder temperature Current value System Control type Current value...
– Operating and display functions In the controller, you can save a date (day, month, year) for the next regular service. The path details given at the start of each function descrip- When the date for the next service date is reached, the mes- tion indicate how you reach this function in the menu struc- sage Service heater 1 is displayed in the basic display of the ture.
8.2.2 Reading the water pressure of the heating 8.2.6 Setting the distance adjustment installation Menu → Installer level → System configuration [System --- -] → Distance adjustment Menu → Installer level → System configuration [System --- -] → Water pressure –...
Heating circuit system configuration 8.4.4 Reading the target flow temperature Menu → Installer level → System configuration [HEATING 8.4.1 Reading the end of the current time period 1 ----] → Flow temp. target Menu → Installer level → System configuration [HEATING –...
Changing the code for Installer level Active: Cylinder connected Inactive: No cylinder connected Menu → Installer level → Change code – This function allows you to change the access code for 8.5.2 Setting the target temperature for domestic the "Installer level" operating level. hot water cylinder (desired domestic hot If the code is no longer available, you must reset the control water temperature)
Eliminating faults Fault messages If a fault occurs in the heating installation, an error message will appear in the control display instead of the basic display. You can access the basic display again by pressing the Back selection button. You can also read all current error messages under the following menu item: Menu →...
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Fault Cause Remedy – No changes in the display via the selector Unit fault The power is switched off/on at the buttons heater Installation instructions 0020131957_02...
Observe all relevant regulations. mains by disconnecting the mains plug or ▶ For detailed information refer to www.vaillant.co.uk. by de-energising the boiler via an isolating device with a contact opening of at least 3 mm (e. g. fuses or power switches).
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