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38VYX050/38VYX080
INSTALLATION MANUAL
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38VYX050/38VYX080 Heat pump split system outdoor units For operation and maintenance instructions of this unit as well as installation instructions of the indoor unit, refer to the relevant manuals. Contents Page Precautions for safety .................................................................................................................... 2 Accessory and refrigerant ............................................................................................................. 3 Select
Summary of the content on the page No. 3
38VYX050/38VYX080 General information • Perform installation work properly according to the Installation Precautions for safety Manual. The unit must be installed according to the national plant- Inappropriate installation may result in water leakage, electric engineering standards. shock or fire. • Read this “PRECAUTIONS FOR SAFETY” carefully before • When the air conditioner is installed in a small room, provide Installation. appropriate measures to ensure that the concentration of • The prec
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38VYX050/38VYX080 Accessory and refrigerant ENGLISH Table II: Accessory and Installation Parts Outdoor unit Protective bush Installation manual x 1 (For SM800AT only) Drain nipple Guard material for passage Waterproof rubber cap part (For SM800AT only) Use copper pipe with 1.0 mm or more thickness for Ø 15.87. Refrigerant Piping • Flare nut and flare works are also different from those of the • Piping kit used for the conventional refrigerant cannot be used. conventional refrigerant. • Use copp
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500 38VYX050/38VYX080 Selection of installation Air purge Knockout procedure • For air purge, use a vacuum pump. • Do not use refrigerant charged in the outdoor unit for air purge. • The indoor/outdoor connecting pipes can be connected to 4 (The refrigerant for air purge is not contained in the outdoor unit.) directions. Take off the knockout part of the pipe cover in which pipes or wires pass through the base plate. Electrical cabling • As shown in the figure, do not remove the pipe cover from
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38VYX050/38VYX080 Refrigerant piping ENGLISH lign the centres of the connecting pipes and tighten the flare nut 38 VYX 050 as strong as possible with your fingers. Pipe forming / positioning Then fix the nut with a spanner and tighten it with torque wrench as shown in the figure. • Pipe forming. Form the pipe along with a marked line of the cabinet. • End positioning of pipe. Match the ends of both pipes at a distance of 85 mm apart from the marked line. C D Half union or packed valve
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38VYX050/38VYX080 Minimum clearances Obstacle at rear side Upper side is free Single unit installation Obstacles at both right and left sides. 150 300 or more or more • The height of the obstacle should be lower than the height of the outdoor unit. Serial installation of two or more units 300 300 150 300 • The height of the obstacle should be lower than the height of the outdoor unit. or more or more or more or more Obstacle at rear side Obstacle also at the upper side 150 or more Obstacle at f
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38VYX050/38VYX080 Minimum clearances ENGLISH Obstacles at both front and rear sides Standard installation Open the upper side and both right and left sides. The height of obstacle at both front and rear side, should be lower than the height of the outdoor unit. Serial installation of two or more units Single unit installation 300 300 or more or more Serial installation at front and rear sides Standard installation Open the upper side and both right and left sides. The height of obstacle at both
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38VYX050/38VYX080 Installation Knockout hole Waterproof rubber cap Drain nipple A Open Drain nipple Waterproof rubber cap • In case of draining through the drain hose, attach the following drain nipple and the waterproof rubber cap, and use the drain hose (Inner diam.: 16mm) sold on the market. A And also seal the screws securely with silicone material, etc. so that water does not drop down. Some conditions may cause dewing or dripping of water. Waterproof rubber cap 3
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38VYX050/38VYX080 Evacuating ENGLISH Table VIII: Air Purge Max. connecting Height difference (m) Hexagonal Capacity rank wrench size pipe length (m) Outdoor unit higher than indoor unit Outdoor unit lower than indoor unit 38 VYX 050 30 30 15 4 mm 38 VYX 080 50 30 15 - This air conditioner can be installed up to the connecting pipe length and height difference in the following table. Air Purge Vacuum pump With respect to the preservation of terrestrial environment, adopt • As shown in the righ
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38VYX050/38VYX080 Evacuating Valve handling precautions • Open the valve stem or the handle until it strikes the stopper. ø 6,35 14 a 18 N•m (1,4 a 1,8 kgf•m) It is unnecessary to apply further force. Valve ø 9,52 33 a 42 N•m (3,3 a 4,2 kgf•m) size ø 12,70 33 a 42 N•m (3,3 a 4,2 kgf•m) • Securely tighten the cap with a torque wrench. ø 15,87 20 a 25 N•m (2,0 a 2,5 kgf•m) • Cap tightening torque Service connection 14 a 18 N•m (1,4 a 1,8 kgf•m) Electrical connections • Make refrigerant connection
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38VYX050/38VYX080 Final installation checks ENGLISH • Pressure of R410A is approx. 1.6 times higher than that of R22. If installation work is incompletely finished, a gas leakage may occur when pressure rises during operation. Therefore, be sure to test the piping connections for leakage. • Check gas leakage at the flare nut connections, valve stem cap connections and service port cap fittings with a leak detector or soap water. Piping cover Check points of outdoor unit Useful Functio
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38VYX050/38VYX080 Final installation checks diameter of the outdoor unit control valve (3 way valve) has been Installation/Servicing Tools changed. (1/2 UNF 20 threads per inch) Changes in the product and components • In order to increase the pressure resisting strength of the refrigerant piping flare processing diameter and size of opposite In the case of an air conditioner using R410A, in order to prevent side of flare nuts has been changed. (for copper pipes with nominal dimensions 1/2 and 5
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38VYX 050-080 Via R. Sanzio, 9 - 20058 Villasanta (MI) Italy - Tel. 039/3636.1 The manufacturer reserves the right to change any product specifications without notice. November, 2003. Supersedes July 2003 Printed in Japan
