Daikin VRV III-S Installation Manual

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Daikin VRV III-S Installation Manual Manual pdf 6 page image

Installation manual3 RXYSQ4~6P7V3B + RXYSQ4~6P7Y1BVRVIII-S system air conditioner4PW35338-13. BEFORE INSTALLATION3.1. Precautions for R410A■ The refrigerant requires strict cautions for keeping the systemclean, dry and tight.- Clean and dryForeign materials (including mineral oils or moisture) should beprevented from getting mixed into the system.- TightRead "8. Precautions on refrigerant piping" on page 6 carefullyand follow these procedures correctly.■ Since R410A is a mixed refrigerant, the required additionalrefrigerant must be charged in its liquid state. (If the refrigerantis in state of gas, its composition changes and the system willnot work properly).■ The connected indoor units must be indoor units designedexclusively for R410A.3.2. Installation■ For installation of the indoor unit(s), refer to the indoor unitinstallation manual.■ Never operate the air conditioner with the discharge pipethermistor (R2T), suction pipe thermistor (R3T) and pressuresensors (S1NPH, S1NPL) removed. Such operation may burnout the compressor.■ Be sure to confirm the model name and the serial no. of theouter (front) plates when attaching/detaching the plates to avoidmistakes.■ When closing the service panels, take care that the tighteningtorque does not exceed 4.1 N•m.3.3. HandlingAs shown in the figure, bring the unit slowly by grabbing the left andright grips.Place your hands on the corner instead of holding the suction inlet inthe side of the casing, otherwise the casing could be deformed.4. SELECTING INSTALLATION SITEThis is a class A product. In a domestic environment this product maycause radio interference in which case the user may be required totake adequate measures.1 Select an installation site where the following conditions aresatisfied and that meets with your customer's approval.- Places which are well-ventilated.- Places where the unit does not bother next-door neighbours.- Safe places which can withstand the unit's weight andvibration and where the unit can be installed level.- Places where there is no possibility of flammable gas orproduct leak.- Places where servicing space can be well ensured.- Places where the indoor and outdoor units' piping and wiringlengths come within the allowable ranges.- Places where water leaking from the unit cannot causedamage to the location (e.g. in case of a blocked drain pipe).- Places where the rain can be avoided as much as possible.2 When installing the unit in a place exposed to strong wind, payspecial attention to the following.Strong winds of 5 m/sec or more blowing against the outdoorunit's air outlet causes short circuit (suction of discharge air),and this may have the following consequences:- Deterioration of the operational capacity.- Frequent frost acceleration in heating operation.- Disruption of operation due to rise of high pressure.- When a strong wind blows continuously on the face of theunit, the fan can start rotating very fast until it breaks.Refer to the figures for installation of this unit in a place wherethe wind direction can be foreseen.■ Turn the air outlet side toward the building's wall, fence orscreen.■ Set the outlet side at a right angle to the direction of the wind.3 Prepare a water drainage channel around the foundation, todrain waste water from around the unit.4 If the water drainage of the unit is not easy, please build up theunit on a foundation of concrete blocks, etc. (the height of thefoundation should be maximum 150 mm).5 If you install the unit on a frame, please install a waterproof platewithin 150 mm of the underside of the unit in order to prevent theinvasion of water from the lower direction.6 When installing the unit in a place frequently exposed to snow,pay special attention to the following:- Elevate the foundation as high as possible.- Construct a large canopy (field supply).- Remove the rear suction grille to prevent snow fromaccumulating on the rear fins.Since design pressure is 4.0 MPa or 40 bar, pipes of largerwall thickness may be required. Refer to paragraph"7.1. Selection of piping material" on page 6.Take care not to let hands or objects come in contact withrear fins.■ Make sure to provide for adequate measures in orderto prevent that the outdoor unit be used as a shelterby small animals.■ Small animals making contact with electrical parts cancause malfunctions, smoke or fire. Please instruct thecustomer to keep the area around the unit clean.Strong windBlown air Strong windMake sure there is enough room to do the installation