Panasonic CS-W34BB4P Service Manual

Also see for CS-W34BB4P: Operating instructions

Contents

Panasonic CS-W34BB4P Service Manual Manual pdf 7 page image

2.8. New refrigerant Series [R407C]pipe installation2.8.1. Procedure•••• The new refrigerant (R407C) has a different composition tothe previously-used refrigerant (R22), so some contentsand method of pipe installation and charging work aredifferent from before. Care should be taken when carryingout this work.2.8.2. Installation and precautions2.8.2.1. Before installation1. Determine the installation division.2. Check the refrigerant to be used.•••• Check that the refrigerant is R407C.•••• Check that the gauge pressure is at a maximum of 3.3MPa.3. Make a drawing of the Installation.2.8.2.2. Installation1. Install the sleeve and the insert.2. Install the indoor unit.3. Install the refrigerant piping.•••• Pipe materials (Phosphours Deoxidization SeamlessPipe)•••• Refrigerant pipes which were previously used to carryR22 must not be re-used. If replacing the indoor andoutdoor units, be sure to replace all refrigerant pipesalso.•••• Check the pipe thickness.(1/4, 3/8, 1/2 : t = 0.8mm 5/8, 3/4 : t = 1.0mm)•••• Clean the inside of the pipes.•••• When storing pipes, seal both ends of the pipes andstore them indoors to prevent water, dust and otherforeign particles from getting inside.•••• Take care not to let any foreign particles (oxide scales,water or dirt) get inside the refrigerant lines (same as forR22). Refrigerant pipe storingLocation Installation period Storing methodOutdoors 1 month or more PinchingLess than 1 month Pinching or tapingIndoors Any•••• Pinching methodClose off the ends of the pipes with pliers or similar tooland seal the opening by brazing.•••• Taping methodWind PVC tape around the ends of the pipes to seal the2.7. Group Control Equipment7