English 3Also review the “SAFETY PRECAUTIONS”.b. Items to be checked at time of deliveryc. Points for explanation about operations3. SELECTING INSTALLATION SITECAUTION• When moving the unit during or after unpacking, make sureto lift it by holding its lifting lugs. Do not exert any pressure onother parts, especially the refrigerant piping, drain piping andflange parts.• If you think the humidity inside the ceiling might exceed30°C and RH80%, reinforce the insulation on the unit body.Use glass wool or polyethylene foam as insulation so thatit is no thicker than 10mm and fits inside the ceiling open-ing.(1) Select an installation site where the following conditionsare fulfilled and that meets with your customer’s approval.• Where optimum air distribution can be ensured.• Where nothing blocks air passage.• Where condensate can be properly drained.• Where the ceiling is strong enough to bear the indoor unitweight.• Where the false ceiling is not noticeably on an incline.• Where there is no risk of flammable gas leakage.• Where sufficient clearance for maintenance and servicecan be ensured. (Refer to Fig. 1)• Where piping between indoor and outdoor units is possi-ble within the allowable limit. (Refer to the installationmanual for the outdoor unit.)• The equipment is not intended for use in a potentiallyexplosive atmosphere.• *H1 dimension means the minimum height of the unit.• Select the *H1, *H2 dimension such that a downwardslope of at least 1/100 is ensured as indicated in“7. DRAIN PIPING WORK”.• The maintenance space marked with “*” is required whenthe installation box for adaptor PC board (KRP1BA101)sold separately is used.[ PRECAUTION ]• Install the indoor and outdoor units, power supply wiringand connecting wires at least 1 m away from televisions orradios in order to prevent image interference or noise.(Depending on the radio waves, a distance of 1 m may notbe sufficient enough to eliminate the noise.)• If installing the wireless kit in a room with electronic fluo-rescent lighting (inverter or rapid start type), the remotecontroller’s transmission distance may be shortened.Indoor units should be installed as far away from fluores-cent lighting as possible.(2) Use suspension bolts for installation. Check whetherthe ceiling is strong enough to support the weight ofthe unit or not. If there is a risk, reinforce the ceilingbefore installing the unit.• To avoid contact with the fan, one of the following precautionactions must be taken:- Install the unit as high as possible at a minimum bottomheight of 2.7 m.- Install the unit as high as possible at a minimum bottomheight of 2.5 m in case the fan is externally screened byparts which can be removed without the aid of tools (e.g.false sealing, grill ... ).- Install the unit with ducting and grill which can only beremoved with the aid of tooling. It shall be installed so thatit gives adequate protection against touching the fan. If amaintenance panel exists in the ducting, it shall only bepossible to remove the panel by the aid of tooling to avoidcontact with the fan. The protection shall be according torelevant European and local legislation. There are norestrictions concerning the installation height.Is something blocking the airoutlet or inlet of either theindoor or outdoor units?It may result in insufficientcooling.Are refrigerant piping lengthand additional refrigerantcharge noted down?The refrigerant charge in thesystem is not clear.Items to be checked CheckDid you explain about operations while showing theoperation manual to your customer?Did you hand the operation manual and warranty over toyour customer?Did you explain about the way of maintaining and cleaninglocal procurements (air filter, grille (both air outlet and suc-tion grille), etc.) to your customer?Did you hand manuals of local procurements (in caseequipped) over to your customer?The items with WARNING and CAUTION marks inthe operation manual are the items pertaining topossibilities for bodily injury and material damage inaddition to the general usage of the product. Accordingly, itis necessary that you make a full explanation about thedescribed contents and also ask your customers to read theoperation manual.Control boxMaintenancespaceMaintenancespace300or more*300ormore*H2=20 or more2500 or more *H1=240 or more200CeilingFloor surface(length : mm)Fig. 1