Daikin VRV III-S Technical Data Manual

Also see for VRV - WII: Service manual Technical data Manual Technical data

Contents

• VRV Systems • Network Solution 39•10 Explanations of Power Proportional Distribution10 - 1 What is the Power Proportional Distribution.2) Calculation of the proportional division value for a daily power consumption.The proportional division value for a dairy power consumption is stored with factors of each indoor unit’snumber and a calendar date as a table shown below after adding the count result of hourly powerconsumption from 00:00 through 23:59. (with a graduation of 10 W)3) Counting the electricity at the ceased condition of the unitEven if an airconditioner is stopped or in the condition of thermostat -off ( the condition that the compressors are stopped as the temperature in thespace where all the indoor units are installed falls down to the preset temperature), the airconditioner consumes energy due to the energy consumptionmainly by the crank-case heater in the outdoor unit.When the iPU is used, the rated power consumption of the crank-case heater is divided by the number of indoor units in usual connection (for instancetwo indoor units of 2.5 HP are connected to an outdoor unit of 5 HP etc. ) and the value is registered at the test run ,adapting each indoor unit’s capacity.(Example)The iPU counts the indoor unit’s operating conditions every 20 seconds.Since the indoor units send ON/OFF data of the crank-case heater the to iPU, it adds one(+1) to the power counter inside iPU at no operation of theairconditioner when the crank-case heater is ON.When this counter reaches 180, it judges that the crank-case heater was on for one hour, and in case of the above mentioned indoor unit, the countergoes back to zero after 25 Wh is added to the counting result .This calculation process is conducted separately from the proportional division computation and this input is got rid of from the pulse input of thewatthour meter. Because of this procedure, the power consumption in the space where the airconditioner is not used at all is counted constantly everymonth.(However, as this airconditioning system is a multi-system, in case that one outdoor unit is shared to another tenant, the count output can be seen inlower value rather than the crank-case heater’s power consumption registered, because the crank-case heater doesn’t actuate when another tenantoperates the airconditioner.)Indoor unit No.Date 001 002 003 004April 1stApril 2ndApril 3rd000150002004000313000211005202001103000741009205000086004402005902008173The set data in the dues control unit is notdeleted even if the electric power is turnedoff, because the data is stored in the non-volatile (flash) memory.RXYQ5P(Crank-case heater's output=50W)FXFQ80P(Power consumption at no operation=50/2=25W)