Daikin RTSQ20PY1 Service Manual

Also see for RTSQ10PY1: Installation manual Service manual

Contents

SiBE31-801_C Example of Connection (R-410A Type)Appendix 406How to calculate the additional refrigerant tobe chargedAdditional refrigerant to be charged : R(kg)(R should be rounded off in units of 0.1 kg.)Example for refrigerant branch using REFNET joint and REFNET header for the systems and each pipe length as shown below.System : RTSYQ20PY1Independent outdoor unit : RTSQ8PY1, RTSQ12PY1Function unit : BTSQ20PY1Note 1.When the equivalent pipe length between outdoor(*2) and indoor units is 90m or more, the size ofmain pipes (figure on right) must be increasedaccording to the right table.(*) If available on the site, use this size.Otherwise, it can not be increased.Note 2. Allowable length after the first refrigerant branch kit to indoor units is 40m or less, however it can be extended up to 90m if all the following conditions are satisfied.Required Conditions Example Drawings (In case of “Branch with REFNET joint”)1.It is necessary to increase the pipe size if the pipe length between thefirst branch kit and the final branch kit is over 40m. (Reducers must beprocured on site)If the increased pipe size is larger than main pipe size, then increasethe main pipe size to the same pipe size.8 c + d + e + f + g + h + q ≤ 90 mincrease the pipe size of c, d, e, f, g, hIncrease the pipe size as followsφ9.5 → φ12.7 φ15.9 → φ19.1 φ22.2 → φ25.4* φ34.9 → φ38.1*φ12.7 → φ15.9 φ19.1 → φ22.2 φ28.6 → φ31.8*2.For calculation of Total extension length, the actual length of abovepipes must be doubled. (except main pipe and the pipes that are notincreased)a + b + c × 2 + d × 2 + e × 2 + f × 2 + g × 2+ h × 2 + i + j + k +r+ m + n + p + q ≤ 500 m3.Indoor unit to the nearest branch kit ≤ 40 m i, j....... p, q ≤ 40 m4.The difference between[Outdoor unit to the farthest indoor unit] and [Outdoor unit to thenearest indoor unit] ≤ 40 mThe farthest indoor unit 8The nearest indoor unit 1(a + b + c + d + e + f + g + h + q) - (a + b + i ) ≤ 40 m*If available on the site, use this size. Otherwise it can not be increased.R = Total length(m)of liquid pipingsize at φ22.2 0.37Total length(m)of liquid pipingsize at φ15.9 0.18Total length(m)of liquid pipingsize at φ9.5 0.059Total length(m)of liquid pipingsize at φ19.1 0.26Total length(m)of liquid pipingsize at φ12.7 0.12Total length(m)of liquid pipingsize at φ6.4 0.022FOR THE SYSTEMSYSTEM NAMERTSYQ10PY1RTSYQ14PY1RTSYQ16PY1RTSYQ20PY1THE AMOUNT OF REFRIGERANT—1.3kg2.3kg—a : φ15.9 × 10m e : φ6.4 × 10m i : φ6.4 × 10m r : φ12.7 × 5mb : φ15.9 × 30m f : φ6.4 × 20m j : φ9.5 × 20m s : φ9.5 × 10mc : φ12.7 × 20m g : φ6.4 × 20m k : φ9.5 × 10md : φ6.4 × 10m h : φ6.4 × 10m r: φ9.5 × 10mR = 40 × 0.18 + 25 × 0.12 + 50 × 0.059 + 80 × 0.022 = 14.91 14.9kga, b c, r j, k,r, s d~i Round off in units of 0.1 kg.System Gas LiquidRTSYQ10 type φ22.2 → φ25.4 (*) φ9.5 → φ12.7RTSYQ14 type Not Increased φ12.7 → φ15.9RTSYQ16 type φ28.6 → φ31.8 (*)RTSYQ20 type φ15.9 → φ19.1Outdoor unitFunction unit First refrigerantbranch kitIndoorunitMain pipesIncrease gas and liquidpipe size both.In case of single outdoor unit systemOutdoor unit Function unit First refrigerantbranch kitIndoorunitMain pipesIncrease gas and liquidpipe size both.In case of multi outdoor unit systemOutdoor unit Function unitab c d e f g hREFNET joint(A~G)i j k r m n pqGFEDCBA1 2 3 4 5 6 78Indoor units ( 1 - 8 )