Vaillant VWL 57/5 IS Operating, Installation And Maintenance Instructions

Also see for VWL 105/5 AS S2: Operating instructions Operating instructions Operating instructions

Contents

Start-up 70020257319_02 Hydraulic station Installation and maintenance instructions 336.14 Connecting the domestic hot water cylinder1. Connect the temperature sensor (VR10) for the do-mestic hot water cylinder to the corresponding connec-tion for cable harness X22 on the control PCB.2. If an external current anode is installed in the domestichot water cylinder, connect it to X313 or X314 on thepower supply PCB.◁ The connection plug is included in the bag of smallparts.6.15 Connecting the external prioritising divertervalve (optional)▶ Connect the external prioritising diverter valve to X14 onthe control PCB.– The connection to a permanently live phase "L" with230 V and to a switched phase "S" is available.Phase "S" is actuated by an internal relay andreleases 230 V.6.16 Using the additional relays▶ If required, consult the installation diagram handbookthat is contained in the scope of delivery for the systemcontrol and the handbook for the optional module.6.17 Connecting cascades▶ If you want to use cascades (max. seven units), you mustconnect the eBUS line to contact X100 via the VR32bbus coupler (accessory).6.18 Sealing the power supply PCB1. Tighten all of the screws on the strain relief clamps.2. Close the cover for the electronics box on the powersupply PCB.3. Hinge the electronics box back up.6.19 Checking the electrical installation▶ After the installation is complete, check the electrical in-stallation to ensure that the connections that have beenestablished are secured properly and are sufficiently in-sulated.7 Start-up7.1 Activating screed drying without the outdoorunit and system controlCaution.Risk of damage to the product caused byimpermissible purgingWithout purging the heating circuit, the sys-tem may become damaged.▶ If the screed drying is activated without asystem control, purge the system manu-ally. No automatic purging takes place.Screed drying.– You can use this function to "dry heat" freshly laid screedin accordance with the construction regulations, accord-ing to a defined time and temperature schedule, withouthaving a system control or the outdoor unit connected.When screed drying is activated, all the selected operatingmodes are interrupted. The function controls the flow tem-perature of the controlled heating circuit according to a pre-set programme, regardless of the outdoor temperature.The display shows the target flow temperature. You canmanually set the current day.Days after starting the func-tionTarget flow temperature forthis day [°C]1 252 303 354 405 456–12 4513 4014 3515 3016 2517–23 10 (frost protection function,pump in operation)24 3025 3526 4027 4528 3529 25The day is always changed at 00:00, irrespective of whenthe function starts.After a mains Off/On, screed drying starts with the last activeday.The function ends automatically when the last day of thetemperature profile has elapsed (day = 29) or if you set thestart day to 0 (day = 0).7.1.1 Activating the screed drying1. Press the reset button.2. When restarting the display, press and hold the but-ton until the language selection opens.3. Set the required language. (→ Page 36)4. Press the button in order to select the power supplyfor the back-up boiler.– 230 V5. Press the button in order to select the output of theback-up boiler.6. Press the button in order to select the start day forthe screed drying.◁ The screed drying is started and the display showsthe current flow temperature and the right-handstatus bar shows the system pressure.▽ In the current programme, the current status mes-sages for the system can be called up in the display.▶ Press the and buttons in order to displaythe status messages.