Vaillant flexoTHERM exclusive VWF 87/4 Operating Instructions Manual

Also see for flexoTHERM exclusive VWF 117/4: Installation and maintenance instructions Nstallation and Maintenance Instructions Installation and maintenance instructions Operating instructions

Contents

Vaillant flexoTHERM exclusive VWF 87/4 Operating Instructions Manual Manual pdf 13 page image

Maintenance and care 60020213396_02 flexoTHERM exclusive Operating instructions 136 Maintenance and care6.1 Fulfilling requirements for theinstallation siteThe installation site must be dry and frost-proof throughout.Conditions: Outdoor air heat sourceThe air/brine collector is designed to beoperated with outdoor air. The air intakeand blow-off route of the outdoor unit mustbe kept clear at all times in order to guar-antee that the air can flow unhindered andas intended. Vegetation and, in winter,snowfall, must be cleared.You are not permitted to make any sub-sequent structural alterations whichmay result in a reduced room volumeor a change to the temperature at theinstallation site.6.2 Caring for the productCaution.Risk of material damagecaused by unsuitable clean-ing agents.▶ Do not use sprays, scouringagents, detergents, solventsor cleaning agents that con-tain chlorine.▶ Clean the casing with a damp cloth anda little solvent-free soap.6.3 Reading maintenancemessagesIf the symbol is shown in the display,the product requires maintenance work.The product is not in fault mode; it contin-ues to operate.▶ Consult a competent person.6.4 Checking the system pressure▶ Check the filling pressure of the heatinginstallation every day for a week afterinitial start-up and maintenance work,and then twice a year.– Filling pressure: ≥ 0.07 MPa(≥ 0.70 bar)Filling pressure too low▶ Inform your competent person sothat he can add heating water andincrease the filling pressure.6.5 Checking the brine circuit'sfilling pressure▶ Check the brine circuit's filling pressureat regular intervals. Read the brine cir-cuit's filling pressure in the heat pump'sdisplay.– Brine fluid operating pressure range:0.07 … 0.20 MPa (0.70 … 2.00 bar)7 Troubleshooting7.1 Fault messageNoteIf the heat pump has switched offautomatically due to a fault, thesystem controller can be used toactivate a limp home mode with theelectric auxiliary heating.If several faults occur at the same time,the display shows the corresponding faultmessages for two seconds each in alterna-tion.F.714 Environment circuit: Pressure toolowIf the filling pressure falls below the min-imum pressure, the heat pump will beswitched off automatically.– Minimum brine fluid pressure:≥ 0.05 MPa (≥ 0.50 bar)– Min. brine fluid operating pressure:≥ 0.07 MPa (≥ 0.70 bar)