Panasonic U-72MF2U9 Installation Instructions Manual

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Panasonic U-72MF2U9 Installation Instructions Manual Manual pdf 9 page image

9*6: If any of the tubing length exceeds 98ft. (30m), increase the size of the tubes (liquid tube, suction tube and discharge tube)between the distribution tube and solenoid valve kit by 1 rank and also increase the size of the tubes (liquid tube and gas tube)between the solenoid valve kit and indoor unit by 1 rank.*However, in the case of the Type 56 solenoid valve kit, it is not necessary to increase the tubes (liquid tube, suction tube anddischarge tube) between the distribution tube and solenoid valve kit by 1 rank.7: If the size of suction tubes is ø1-5/8 in. (41.28mm), do not increase the size by 1 rank for the suction tubes.1-6. Tubing SizeTable 3 Main Tubing Size (LA)Between 1st distribution joint for outdoor unit and 1st distribution joint (for indoor unit) Unit: in. (mm)BTU/h(kW)72,000(21.1)96,000(28.1)120,000(35.2)144,000(42.2)168,000(49.2)192,000(56.3)216,000(63.3)240,000(70.3)264,000(77.4)288,000(84.4)312,000(91.4)336,000(98.5)360,000(105.5)Total systemtonnage 6 8 10 12 14 16 18 20 22 24 26 28 30Suctiontubingø3/4"(ø19.05)ø7/8"(ø22.22)ø1-1/8"(ø28.58)ø1-3/8"(ø34.92)ø1-5/8"(ø41.28)Dischargetubingø5/8"(ø15.88)ø3/4"(ø19.05)ø7/8"(ø22.22)ø1-1/8"(ø28.58)Liquid tubing ø3/8"(ø9.52)ø1/2"(ø12.7)ø5/8"(ø15.88)ø3/4"(ø19.05)* If future extension is planned, select the tubing diameter based on the total tonnage after extension.However, extension is not possible if the resulting tubing size is three ranks higher.* The balance tube (outdoor unit tube) diameter is ø1/4" (6.35mm).* Type 1 tubing should be used for the refrigerant tubes.n Size of tubing (LO) between outdoor unitsSelect the size of tubing between outdoor units based on the main tubing size (LA) as given in the table above.Table 4 Main Tubing Size After Distribution (LB, LC...) Unit: in. (mm)Total capacityafter distributionBelow BTU/h (kW) 24,200(7.09)54,600(16.0)85,300(25.0)102,400(30.0)124,200(36.4)143,300(42.0)162,400(47.6)200,600(58.8)Over BTU/h (kW) – 24,200(7.09)54,600(16.0)85,300(25.0)102,400(30.0)124,200(36.4)143,300(42.0)162,400(47.6)Tubing sizeSuction tubing ø5/8"(ø15.88)ø3/4"(ø19.05)ø3/4"(ø19.05)ø7/8"(ø22.22)ø1-1/8"(ø28.58)ø1-1/8"(ø28.58)ø1-1/8"(ø28.58)ø1-1/8"(ø28.58)Discharge tubing ø1/2"(ø12.7)ø5/8"(ø15.88)ø5/8"(ø15.88)ø3/4"(ø19.05)ø3/4"(ø19.05)ø7/8"(ø22.22)ø7/8"(ø22.22)ø7/8"(ø22.22)Liquid tubing ø3/8"(ø9.52)ø3/8"(ø9.52)ø3/8"(ø9.52)ø3/8"(ø9.52)ø1/2"(ø12.7)ø1/2"(ø12.7)ø1/2"(ø12.7)ø5/8"(ø15.88)Total capacityafter distributionBelow BTU/h (kW) 238,900(70.0)340,000(99.6) –Over BTU/h (kW) 200,600(58.8)238,900(70.0)340,000(99.6)Tubing sizeSuction tubing ø1-1/8"(ø28.58)ø1-3/8"(ø34.92)ø1-5/8"(ø41.28)Discharge tubing ø1-1/8"(ø28.58)ø1-1/8"(ø28.58)ø1-1/8"(ø28.58)Liquid tubing ø5/8"(ø15.88)ø3/4"(ø19.05)ø3/4"(ø19.05)Table 5 Outdoor Unit Tubing Connection Size ( A – C) Unit: in. (mm)BTU/h(kW)72,000(21.1)96,000(28.1)120,000(35.2)144,000(42.2)Suction tubingø3/4" *1(ø19.05) *1 ø7/8" *2(ø22.22)*2 ø1-1/8"(ø28.58)Brazing connectionDischargetubingø5/8" (ø15.88) ø3/4" (ø19.05) ø7/8" (ø22.22)Flare connection Brazing connectionLiquid tubing ø3/8" (ø9.52) ø1/2" (ø12.7)Flare connectionBalance tubing ø1/4" (ø6.35)Flare connectionex.) Type 72Liquid tubeDischarge tube Suction tubeBalance tubeNote: In case the total capacity of connected indoor unitsexceeds the total capacity of the outdoor units,select the main tubing size for the total capacity ofthe outdoor units.