Daikin RYYQ8T7Y1B Installation And Operation Manual

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Daikin RYYQ8T7Y1B Installation And Operation Manual Manual pdf 24 page image

Installation and operation manual19 RYYQ+RYMQ+RXYQ8~20T7Y1BVRV IV System Air Conditioner4P329765-1 – 2012.0910.2.4. Branching the refrigerant piping For installation of the refrigerant branching kit, refer to theinstallation manual delivered with the kit.1 Horizontal surface1 Mount the refnet joint so that it branches either horizontally orvertically.2 Mount the refnet header so that it branches horizontally. Installation of the multi connection piping kit.1 Install the joints horizontally, so that the caution label (1)attached to the joint comes to the top.- Do not tilt the joint more than 15° (see view A).- Do not install the joint vertically (see view B).2 Make sure that the total length of the piping connected to thejoint is absolute straight for more than 500 mm. Only if astraight field piping of more than 120 mm is connected, morethan 500 mm of straight section can be ensured.3 Improper installation may lead to malfunction of the outdoorunit.10.3. Guidelines for handling stop valve10.3.1. Cautions on handling the stop valve Make sure to keep both stop valves open during operation. The figure below shows the name of each part required inhandling the stop valve. The stop valve is factory closed.10.3.2. How to use the stop valveOpening the stop valve1 Remove the valve cover.2 Insert a hexagon wrench into the stop valve and turn the stopvalve counterclockwise.3 When the stop valve cannot be turned any further, stop turning.The valve is now open.To fully open the Ø19.1 or Ø25.4 gas line stop valve, turn thehexagonal wrench until a torque between 27 and 33 N•m is achieved.Inadequate torque may cause leakage of refrigerant and breakage ofthe stop valve cap.Closing the stop valve1 Remove the valve cover.2 Insert a hexagon wrench into the stop valve and turn the stopvalve clockwise.3 When the stop valve cannot be turned any further, stop turning.The valve is now closed.AB±30° 11A1max15B1>120 mm>500 mmNOTICEPay attention that mentioned torque range is applicable foropening Ø19.1 and Ø25.4 gas line stop valves only.Closing directionLiquid side Gas side1 Service port and serviceport cover2 Stop valve3 Field piping connection4 Stop valve cover34121 Service port2 Cap3 Hexagon hole4 Shaft5 Seal1 23451234