Daikin FDKR200AV16 Installation Manual

I 8. VACUUMING AND CHARGINGVacuuming is necessary to eliminate all moisture and air from the system. The outdoor unit is provided withvalve fittings.VacuumingBefore vacuuming, perform leak check for refrigerationcircuit. After the system piping are properly connected,connect the flexible hoses to the correct charging nipplesas shown in the diagram. Ensure that flexible hose fromcharging nipples are connected to the vacuum pump viastandard servicing valves and pressure gauges (gaugemanifold). Vacuum the air conditioner system to at least500 microns Hg. Do not start the unit when the systemis engaged in vacuuming.ChargingBefore recharging, the vacuum must be held at 500microns Hg for at least 15 minutes, then break vacuumby charging R-41 0A refrigerant. Operate the unit for 15minutes and ensure the refrigerant charge is of correctamount as specified below.After ensuring the system is correctly charged, removeflexible hose from charging nipples and replace caps.Precautions while chargingi. Refrigerant cannot be charged until field wiring has been completed.ii. Refrigerant may only be charged after performing the leak test and vacuum drying.ILIQUOPIPE /GAS PIPEiii. When charging a system, care shall be taken that its maximum permissible charge is never exceeded, in view of dangerof liquid hammer.iv. Charging with an unstable substance may cause explosions and accidents, so always ensure that the appropriaterefrigerant R41 0A is charged.SYSTEM REFRIGERANT CHARGE LEVEL GUIDELINESCooling onlyRefrigerantIndoor Outdoor Liquid Pipe Gas Pipe Charge(kg/7.5m pipelength)FDKR200AV16 RZR200AY16 1/2" 7/8" 4.0FDKR300AV16 RZR300AY16 1/2" 1-1/8" 4.2FDKR400AV16 RZR400AY16 5/8" 1-1/8" 7.6* Keep minimum 7.5m pipe length during installation.ADDITIONAL CHARGEBased on liquid pipe size per meter length:Liquid Pipe Size, inch Additional Charge, kg/meter1/2" 0.095/8" 0.114Note: The additional refrigerant charge amount recommended is a guideline for longer piping application. The actual chargerequired may be different from the guideline due to different application and variation in site conditions.14