Daikin EBHQ006BAV3 Installation Manual

Also see for EBHQ006BAV3: Installation manual Installation manual Operation manual Installation manual Operation manuals

Contents

Daikin EBHQ006BAV3 Installation Manual Manual pdf 16 page image

Installation manual14 EBHQ006+008BAV3Unit for air to water heat pump system4PW64602-1D – 12.201010.6. Initial start-up at low ambient temperatures10.7. Charging water1 Connect the water supply to a drain and fill valve (see "5.2. Maincomponents of the outdoor unit" on page 6).2 Make sure the automatic air purge valve is open (at least 2turns).3 Fill with water until the manometer indicates a pressure ofapproximately 2.0 bar. Remove air in the circuit as much aspossible using the air purge valves. Air present in the watercircuit might cause malfunctioning of the backup heater (ifapplicable).4 Check that the backup heater vessel (EKMBUH) (if applicable) isfilled with water by opening the pressure relief valve. Water mustflow out of the valve.If no glycol is in the system in case of a power supply failure or pumpoperating failure, drain the system.When water is at standstill inside the system, freezing is very likely tohappen and damaging the system in the process.Piping insulationThe complete water circuit, inclusive all piping, must be insulated toprevent condensation during cooling operation and reduction of theheating and cooling capacity as well as prevention of freezing of theoutside water piping during winter time. The thickness of the sealingmaterials must be at least 13 mm with λ=0.039 W/mK in order toprevent freezing on the outside water piping.If the temperature is higher than 30°C and the humidity is higher thanRH 80%, then the thickness of the sealing materials should be atleast 20 mm in order to avoid condensation on the surface of thesealing.Water piping freezing preventionProtect the water piping against water freezing during the winterperiod (e.g. by using an external field supplied heater tape or glycolsolution).11. IMPORTANT INFORMATION REGARDING THEREFRIGERANT USEDThis product contains fluorinated greenhouse gases covered by theKyoto Protocol. Do not vent gases into the atmosphere.Refrigerant type: R410AGWP(1) value: 1975(1) GWP = global warming potential12. ELECTRICAL WIRING WORKRefer to the installation manual of the EKCB indoor unit.13. START -UP AND CONFIGURATIONRefer to the installation manual of the EKCB indoor unit.NOTICETo ensure that the unit operates within its operating rangeas soon as possible (water temperature >30°C), the loadduring start-up must be reduced as much as possible.For example you can do this by putting off fans of the fancoil unit until the water temperature has increased to 30°C.If no backup heater (EKMBUHBA6C3) is installed withinthe unit we recommend to start-up the unit with a minimumwater temperature of 5°C.For floor heating applications without a backup heaterinstalled, start-up circuit by circuit by using an (thermo-static) bypass valve, make sure that the temperature of thewater returning to the unit is more than 20°C.NOTICE■ During filling, it might not be possible to remove all airin the system. Remaining air will be removed throughthe automatic air purge valves during first operatinghours of the system. Additional filling with waterafterwards might be required.■ The water pressure indicated on the manometer willvary depending on the water temperature (higherpressure at higher water temperature).However, at all times water pressure should remainabove 1 bar to avoid air entering the circuit.■ The unit might dispose some excessive water throughthe pressure relief valve.■ Water quality must be according EN directive98/83 EC.