220 Detailed technical drawings RZA-D To determine the additional refrigerant amount To determine if adding additional refrigerant is necessary Chargeless length Ø standard 30 m Ø size-up of gas piping 30 m Ø size-up of liquid piping 20 m If Then (L1+L2+L3+L4+L5+L6+L7) ≤ chargeless length You do not have to add additional refrigerant. (L1+L2+L3+L4+L5+L6+L7) > chargeless length You must add additionalrefrigerant. For future servicing, encircle theselected amount in the tables below. INFORMATION Piping length is the largest one-way length of liquid piping. To determine the additional refrigerant amount (R in kg) (in case of pair) Standard piping size: L1 (m) L1: 30~40 m 40~50 m 50~60 m 60~70 m 70~80 m 80~90 m 90~100 m R: 0.45 kg 0.9 kg 1.35 kg 1.8 kg 2.25 kg 2.7 kg 3.15 kg Size-up piping size: L1 (m) L1: 20~25 m 25~30 m 30~35 m 35~40 m 40~45 m 40~45m R: 0.35 kg 0.7 kg 1.05 kg (a) 1.4 kg (a) 1.75 kg 2.1 kg To determine the additional refrigerant amount (R in kg) (in case of twin, triple and double twin) 1. Determine G1 and G2. G1 (m) Total length of <x> liquid piping x=Ø9.5 mm (standard) x=Ø12.7 mm (size‑up) G2 (m) Total length of Ø6.4 mm liquid piping 2. Determine R1 and R2. If Then G1>30 m(a) Use the table below to determine R1 (length=G1−30 m)(a) and R2 (length=G2). G1≤30 m(a) (and G1+G2>30 m)(a) R1=0.0 kg. Use the table below to determine R2 (length=G1+G2−30 m)(a). (a) In case of size‑up: replace 30 m by 20 m. Standard liquid pipe size Length (m) 0~10 m 10~20 m 20~30 m 30~40 m 40~50 m 50~60 m 60~70 m R1: 0.45 kg 0.9 kg 1.35 kg 1.8 kg 2.25 kg 2.7 kg 3.15 kg R2: 0.2 kg 0.4 kg 0.6 kg 0.8 kg 1 kg 1.2 kg 1.4 kg Size‑up liquid pipe size Length (m) 0~5 m 5~10 m 10~15 m 15~20 m 20~25 m 25~30 m R1: 0.35 kg 0.7 kg 1.05 kg 1.1 kg 1.75 kg 2.1 kg R2: 0.18 kg 0.35 kg 0.53 kg 0.7 kg 0.88 kg 1.05 kg 3. Determine the additional refrigerant amount: R=R1+R2. Examples Layout Additional refrigerant amount (R) L2=7m L1=35 m (Ø9.5 mm) RZA200 L3=5 m (Ø9.5 mm) (Ø9.5 mm) Case: Twin, standard liquid pipe size 1. G1 Total Ø9.5 => G1=35+7+5=47 m G2 Total Ø6.4 => G2=0 m 2. Case: G1>30 m R1 Length=G1–30 m=47–30 m=17 m => R1=0.9 kg R2 Length=G2=0 m => R2=0 kg 3. R R=R1+R2=0.9+0=0.9 kg L2=17 m L3=17 m L4=10 m L1=35 m (Ø9.5 mm) RZA200 (Ø6.4 mm) (Ø6.4 mm) (Ø6.4 mm) Case: Triple, standard liquid pipe size 1. G1 Total Ø9.5 => G1=5 m G2 Total Ø6.4 => G2=10+17+17=44 m 2. Case: G1≤30 m (and G1+G2>30 m) R1 R1=0.0 kg R2 Length=G1+G2–30=5+44–30=19 m => R2=0.4 kg 3. R R=R1+R2=0.0+0.4=0.4 kg 4PEN573384-1_2019_04 Click here to view all RZA-D technical drawings on my.daikin.eu
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