Daikin RXF60B2V1B Installer's Reference Manual

Also see for ARXM50N2V1B: Installation manual

Daikin RXF60B2V1B Installer's Reference Manual Manual pdf 10 page image

5 PreparationInstaller reference guide10RXF50+60B2_RXF71A2_RXP50~71L2_(A)RXM42~71N2_RXJ50N2_RXA42+50B2R32 split series4P513661-6B – 2018.05Install the outdoor unit away from direct sea winds.Example: Behind the building.bcaIf the outdoor unit is exposed to direct sea winds, install awindbreaker.▪ Height of windbreaker≥1.5×height of outdoor unit▪ Mind the service space requirements when installing thewindbreaker.abcdcda Sea windb Buildingc Outdoor unitd WindbreakerThe outdoor unit is designed for outdoor installation only, and forambient temperatures ranging from –10 to 46°C in cooling mode andfrom –15 to 24°C in heating mode.5.2.2 Additional installation site requirementsof the outdoor unit in cold climatesProtect the outdoor unit against direct snowfall and take care that theoutdoor unit is NEVER snowed up.abccda Snow cover or shedb Pedestalc Prevailing wind directiond Air outletIn any case, provide at least 300 mm of free space below the unit.Additionally, make sure the unit is positioned at least 100 mm abovethe maximum expected level of snow. See "6.3 Mounting theoutdoor unit" on page 11 for more details.In heavy snowfall areas it is very important to select an installationsite where the snow will NOT affect the unit. If lateral snowfall ispossible, make sure that the heat exchanger coil is NOT affected bythe snow. If necessary, install a snow cover or shed and a pedestal.5.3 Preparing refrigerant piping5.3.1 Refrigerant piping requirementsINFORMATIONAlso read the precautions and requirements in the"General safety precautions" chapter.▪ Piping material: Phosphoric acid deoxidised seamless copper.▪ Piping diameter:Class 42~60 Class 71Liquid piping Ø6.4 mm (1/4")Gas piping Ø12.7 mm (1/2") Ø15.9 mm (5/8")▪ Piping temper grade and thickness:Outer diameter(Ø)Temper grade Thickness (t)(a)6.4 mm (1/4") Annealed (O) ≥0.8 mmtØ12.7 mm (1/2")15.9 mm (5/8") Annealed (O) ≥1.0 mm(a) Depending on the applicable legislation and the unit'smaximum working pressure (see "PS High" on the unitname plate), larger piping thickness might be required.5.3.2 Refrigerant piping length and heightdifferenceWhat? DistanceMaximum allowable pipe length 30 mMinimum allowable pipe length 3 mMaximum allowable height distance 20 m5.3.3 Refrigerant piping insulation▪ Use polyethylene foam as insulation material:▪ with a heat transfer rate between 0.041 and 0.052 W/mK (0.035and 0.045 kcal/mh°C)▪ with a heat resistance of at least 120°C▪ Insulation thicknessPipe outer diameter(Øp)Insulation innerdiameter (Øi)Insulation thickness(t)6.4 mm (1/4") 8~10 mm ≥10 mm12.7 mm (1/2") 14~16 mm ≥10 mm15.9 mm (5/8") 16~20 mm ≥13 mmØiØitØpØpIf the temperature is higher than 30°C and the humidity is higherthan RH 80%, the thickness of the insulation materials should be atleast 20 mm to prevent condensation on the surface of theinsulation.