4 InstallationInstallation manual7RZQG71L9V1L + RZQG71~125L8Y1L + RZQG140L7Y1LSplit system air conditioners4P473073-1A – 2019.04NOTICEMake sure to open the stop valves after installing therefrigerant piping and performing vacuum drying. Runningthe system with the stop valves closed may break thecompressor.4.4 Charging refrigerant4.4.1 To determine the additional refrigerantamountTo determine if adding additional refrigerant is necessaryIf ThenL1 ≤ chargeless lengthL1 (m)Chargeless length=▪ 10 m (size‑down)▪ 30 m (standard)▪ 15 m (size‑up)You do not have to addadditional refrigerant.L1 > chargeless length You must add additionalrefrigerant.For future servicing, encircle theselected amount in the tablesbelow.INFORMATIONPiping length is the largest one-way length of liquid piping.To determine the additional refrigerant amount (R in kg)L1 (m)L1 (standard): 30~40 m 40~50 m 50~60 m(a) 60~75 m(a)L1 (size-up): 15~20 m 20~25 m 25~30 m(a) 30~35 m(a)R: 0.5 kg 1.0 kg 1.5 kg 2.0 kg(a) Only for RZQG100~140.4.4.2 To determine the complete rechargeamountWhen piping length is <5 m, a complete recharge of the unit isrequired.To determine the complete recharge amount (kg) (in case ofstandard liquid pipe size)ModelL1 (m)3~10 10~20 20~30 30~40 40~50 50~60 60~75RZQG71 1.9 2.4 2.9 3.4 3.9 — —RZQG100~140 3.0 3.5 4.0 4.5 5.0 5.5 6.0To determine the complete recharge amount (kg) (in case ofsize‑up liquid pipe size)ModelL1 (m)3~5 5~10 10~15 15~20 20~25 25~30 30~35RZQG71 1.9 2.4 2.9 3.4 3.9 — —RZQG100~140 3.0 3.5 4.0 4.5 5.0 5.5 6.0To determine the complete recharge amount (kg) (in case ofsize‑down liquid pipe size)ModelL1 (m)3~10RZQG71 1.9RZQG100~140 3.04.4.3 Charging refrigerant: SetupSee "4.3.1 Checking refrigerant piping: Setup" on page 6.4.4.4 To charge additional refrigerantWARNING▪ Only use R410A as refrigerant. Other substances maycause explosions and accidents.▪ R410A contains fluorinated greenhouse gases. Itsglobal warming potential (GWP) value is 2087.5. DoNOT vent these gases into the atmosphere.▪ When charging refrigerant, always use protectivegloves and safety glasses.Prerequisite: Before charging refrigerant, make sure the refrigerantpiping is connected and checked (leak test and vacuum drying).1 Connect the refrigerant cylinder to both the service port of thegas stop valve and the service port of the liquid stop valve.2 Charge the additional refrigerant amount.3 Open the stop valves.4.4.5 To fix the fluorinated greenhouse gaseslabel1 Fill in the label as follows:bContains fluorinated greenhouse gases21 1122 kgtCO2 eqGWP × kg1000==+kg=kg=GWP: XXXRXXXaf cdea If a multilingual fluorinated greenhouse gases label isdelivered with the unit (see accessories), peel off theapplicable language and stick it on top of a.b Factory refrigerant charge: see unit name platec Additional refrigerant amount chargedd Total refrigerant chargee Quantity of fluorinated greenhouse gases of the totalrefrigerant charge expressed as tonnes CO2 equivalent.f GWP = Global warming potentialNOTICEApplicable legislation on fluorinated greenhouse gasesrequires that the refrigerant charge of the unit is indicatedboth in weight and CO2 equivalent.Formula to calculate the quantity in CO2 equivalenttonnes: GWP value of the refrigerant × total refrigerantcharge [in kg] / 1000Use the GWP value mentioned on the refrigerant chargelabel. That GWP is based on the current legislation onfluorinated greenhouse gases. The GWP mentioned in themanual might be outdated.2 Fix the label on the inside of the outdoor unit. There is adedicated place for it on the wiring diagram label.