Panasonic U-26PE1U6 Technical Data & Service Manual

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Panasonic U-26PE1U6 Technical Data & Service Manual Manual pdf 108 page image

1-1001. Specifications1-13. Installation Instructions1. Tubing SizeOutdoor UnitSingle typeRefrigerant tubing between the indoor and outdoor unitsshould be kept as short as possible.The length of the refrigerant tubes between the indoorand outdoor units are limited by the elevation differencebetween the 2 units. During tubing work, try to make boththe tubing length (L) and the difference in elevation (H1)as short as possible. Refer to Table 1-4.Table 1-3Indoor unit type Type 26, 36 Type 42165 ft.165 ft.Maximum lengthCharge-less tubing length (actual length) 10 – 100 ft. 15 – 100 ft.0.43 oz.Additional charge per 1 ft.Maximum indoor-outdoorheight differenceIf outdoor unit is higher H1H1100If outdoor unit is lower 50SingleMain tubing LH1Table 1-4 Tubing Data for ModelsU-26PE1U6U-26PS1U6U-36PE1U6U-36PS1U6U-42PE1U6U-42PS1U6Tubing sizeouter diameterLiquid tube in. (mm) 3/8 (9.52) 3/8 (9.52) 3/8 (9.52)Gas tube in. (mm) 5/8 (15.88) 5/8 (15.88) 5/8 (15.88)165 165 165(ft.)(ft.)(ft.)(ft.)Limit of tubing lengthLimit of elevationdifference betweenthe 2 unitsOutdoor unit is placed 100 100 100higher.Outdoor unit is placed 50 50 50lower.Max. allowable tubing length at shipment 10 – 100 10 – 100 10 – 100Required additional refrigerant * 1 (oz./ft.) a) 0.43 b) 0.43 b) 0.43Refrigerant charged at shipment (lbs.) 4.2 6.2 7.9No additional charge of compressor oil is necessary.* 1 If total tubing length becomes 100 to 165 ft., charge additional refrigerant by 0.43 oz./ft.Table 1-5 List of Connection Tube SizesMain tubing (L)Type capacity of indoor units 26 – 42Gas tube ø5/8"Liquid tube ø3/8"Amount of additional charge per 1 ft. 0.43 oz.Tubing Data Models1