Daikin LREQ5B7Y1 Installation Manual

Also see for LREQ10B7Y1: Installation manual Operation manual

Contents

Daikin LREQ5B7Y1 Installation Manual Manual pdf 6 page image

Installation manual3 LREQ5~20B7Y1Air cooled refrigeration condensing unit4PW74302-1 – 2012.062-2 Model seriesLREQ5~202-3 Example of system configuration1 Operation manual2 Installation manual3 Clamps4 Accessory pipes (Installed on bottom frame)2-4 Indoor unit constraints• Install an R410A mechanical thermostatic expansion valve oneach indoor unit.• Insulate the feeler block of the mechanical thermostatic expansionvalve.• Install an R410A solenoid valve (Max. operating differentialpressure of 3.5 MPa [35 bars] or over) on the primary side of themechanical thermostatic expansion valve described above foreach indoor unit.• Install a filter on the primary side of the solenoid valve describedabove for each indoor unit. Determine the filter mesh count basedon the size specified by the solenoid valve and mechanicalthermostatic expansion valve being used.• Route the path to the indoor unit heat exchanger so that the flow ofrefrigerant is from top to bottom.• When installing a number of indoor units, be sure to install them atthe same level.• Use either off-cycle defrosting or electric heater defrosting as thedefrosting type. Hot-gas defrosting models cannot be used.• Set the total value of the internal volume for the evaporator(Refrigerator/Freezer) to connect and the amount of refrigerantinside the evaporator that can be recovered in the condenshingunit by closing the liquid solenoid valve installed on therefrigeration-side to the below amount or lower.LREQ5, 6: 22 l or lowerLREQ8, 10, 12: 33 l or lowerLREQ15, 20: 42 l or lower3. SELECTION OF LOCATIONSelect a location for installation that meets the following conditions.Get the customer’s permission.1. There is no danger of fire due to leakage of inflammable gas.2. Select the location of the unit in such a way that neither thedischarged air nor the sound generated by the unit disturb anyone.3. The foundation is strong enough to support the weight of the unitand the floor is flat to prevent vibration and noise generation.4. The piping length between the outdoor unit and the indoor unit maynot exceed the allowable piping length.(Refer to "6. REFRIGERANT PIPING" on page 5)5. Locations where the unit’s suction vent and outlet vent do notgenerally face the wind.Wind blowing directly into the suction or outlet vents will interferewith the unit’s operation.If necessary, install some kind of obstruction to block the wind.6. The space around the unit is adequate for servicing and theminimum space for air inlet and air outlet is available.(See the "Installation Space Examples" on page 3 for the minimumspace requirements.)Installation Space Examples• The installation space requirement shown in the following figure isa reference for cooling operation when the outdoor temperature is32°C.If the design outdoor temperature exceeds 32°C or the heat loadexceeds maximum capacity in all the outdoor unit, take an evenlarge space on the intake shown in the following figure.• During installation, install the units using the most appropriate ofthe patterns shown in the following figure for the location inquestion, taking into consideration human traffic and wind.• If the number of units installed is more than that shown in thepattern in the following figure, install the units so there are no shortcircuits.• As regards space in front of the unit, consider the space needed forthe local refrigerant piping when installing the units.• If the work conditions in the following figure do not apply, contactyour dealer or Daikin directly.NameLiquid sideaccessorypipe (1)Liquid sideaccessorypipe (2)OthersQuantity 1 pc. 1 pc. 1 pc. about each itemShapeThin• Operation manual• Installation manual• “ADDITIONAL REF.CHARGE” labelName Outdoor unit Indoor unitUnit cooler ShowcaseShapeName Indoor unit Control panel(Defrost)WarningpanelUnit cooler ShowcaseShape1, 2, 3 1, 2, 34 4LREQ5, LREQ6 LREQ8, LREQ10, LREQ121, 2, 34LREQ15, LREQ20