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Fig. 7-4

(4) Do a leak test of all joints of the tubing (both indoor and

outdoor) and both gas and liquid service valves. Bub-

bles indicate a leak. Wipe off the soap with a clean cloth

after a leak test.

(5) After the system is found to be free of leaks, relieve the

nitrogen pressure by loosening the charge hose con-

nector at the nitrogen cylinder. When the system pres-

sure is reduced to normal, disconnect the hose from the

cylinder.

Evacuation

(1) Attach the charge hose end described in the preceding

steps to the vacuum pump to evacuate the tubing and

indoor unit. Confirm that the “Lo” knob of the manifold

valve is open. Then, run the vacuum pump. The opera-

tion time for evacuation varies with the tubing length and

capacity of the pump. The following table shows the

amount of time for evacuation:

ifold valve

Pre

ssu

Vac

m p

tdoor

Clo

Ope

Liq

Bala

Clo

Ope

Clo

Ope

Required time for evacuation

when 30 gal/h vacuum pump is used

If tubing length is

less than 49 ft.

longer than 49 ft.

45 min. or more

90 min. or more

07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 68

Содержание 85464359982001

Страница 1: ...HX0752 KHX0952 KHX1252 KHX1852 KHX2452 for Refrigerant R410A Refrigerant R410A is used in the outdoor units INSTALLATION INSTRUCTIONS Class 90 140 C ECO i W 2WAY CHDX09053 CHDX14053 Optional Controllers Timer Wired Remote Controller RCS TM80BG Wireless Remote Controller For U D Type RCS BH80AAB WL Wireless Remote Controller For X Type RCS SH80AAB WL Wireless Remote Controller For A T Type RCS TRP8...

Страница 2: ... outdoor units Get a partner to help and bend your knees when lifting to reduce strain on your back Sharp edges or thin aluminum fins on the air conditioner can cut your fingers When Installing In a Room Properly insulate any tubing run inside a room to prevent sweating that can cause dripping and water damage to walls and floors In Moist or Uneven Locations Use a raised concrete pad or concrete b...

Страница 3: ... is able to replenish a large amount of refrigerant compared to conventional individual air conditioners If a single unit of the multi air conditioner system is to be installed in a small room select a suitable model and installation pro cedure so that if the refrigerant accidentally leaks out its density does not reach the limit and in the event of an emergency measures can be made before injury ...

Страница 4: ...per Alloy Seamless Pipes and Tubes For tubes of ø7 8 ø22 22 mm or larger use C1220 T 1 2H material or H material and do not bend the tubes Tubing size Be sure to use the sizes indicated in the table below Use a tube cutter when cutting the tubing and be sure to remove any flash This also applies to distribution joints optional When bending tubing use a bending radius that is 4 times the outer diam...

Страница 5: ...mpressor parts are different 2 Existing tubing cannot be used especially R22 Completely cleaning out residual refrigerating machine oil is impossible even by flushing 3 Refrigerating machine oil differs R22 Since R22 refrigerating machine oil is mineral oil it does not dissolve in R410A Therefore refrigerating machine oil discharged from the compressor can cause compressor damage R22 refrigerating...

Страница 6: ...Placing the Unit Inside the Ceiling 3 10 Installing the Drain Piping 3 11 Checking the Drainage 3 12 Electrical Power Wiring 3 13 How to Install the Ceiling Panel Concealed Duct Type U Type 3 14 Required Minimum Space for Installation and Service 3 15 Suspending the Indoor Unit 3 16 Installing the Drain Piping 3 17 Checking the Drainage 3 18 Increasing the Fan Speed Concealed Duct High Static Pres...

Страница 7: ...T RUN 70 8 1 Preparing for Test Run 8 2 Test Run Procedure 8 3 Main Outdoor Unit PCB Setting 8 4 Auto Address Setting 8 5 Remote Controller Test Run Settings 8 6 Caution for Pump Down 8 7 Meaning of Alarm Messages 9 APPENDIX 85 9 1 4 Way Air Discharge Semi Concealed Type X Type 9 2 1 Way Air Discharge Semi Concealed Type A Type 9 3 Concealed Duct High Static Pressure Type U D Type 9 4 Ceiling Moun...

Страница 8: ... wiring Wire size varies with the total length of wiring Refer to 5 ELECTRICAL WIRING for details 1 4 Additional Materials Required for Installation 1 Refrigeration armored tape 2 Insulated staples or clamps for connecting wire See your local codes 3 Putty 4 Refrigeration tubing lubricant 5 Clamps or saddles to secure refrigerant tubing 6 Scale for weighing CAUTION Check local electrical codes and...

Страница 9: ...l scale installation diagram Printed on container box For securing drain hose For securing drain hose For drain joint For liquid tube For gas tube For suspending indoor unit from ceiling For full scale installation diagram For electrical junction box 1 1 1 1 1 1 8 4 1 Drain hose Hose band Drain insulator Flare insulator For gas tube joint For drain joint 2 1 Packing Insulating tape Washer Screw Bu...

Страница 10: ...ndoor unit from ceiling 2 For gas and liquid tube joints Flare insulator 2 Insulating tape 2 For gas and liquid tubes flare nuts Vinyl clamp 8 For flare and drain insulators Drain insulator 1 For drain hose joint Gum eyelet 1 For power supply inlet Drain hose 1 For main unit and PVC pipe joints Hose band 2 For drain hose connection L5 1 2 T3 16 T1 8 White heat resisting Table 1 7 Wall Mounted 5 32...

Страница 11: ... length including length of each distribution tube only liquid tubing 984 A LE LF LG L5 L3 Distance between outdoor units 32 H1 When outdoor unit is installed higher than indoor unit 164 When outdoor unit is installed lower than indoor unit 131 H2 Max difference between indoor units 49 H3 Max difference between outdoor units 13 L Length H Height Allowable tubing length Allowable elevation differen...

Страница 12: ...le above ø7 8 ø22 22 ø3 8 ø9 52 ø1 4 ø6 35 95 500 28 0 153 600 45 0 ø1 1 8 ø28 58 Flare connection Brazing connection ø1 2 ø12 7 Flare connection A C Balance tubing Liquid tubing Gas tubing BTU h kW Note In case the total capacity of connected indoor units exceeds the total capacity of the outdoor units select the main tubing size for the total capacity of the outdoor units Especially the main tub...

Страница 13: ...8 ø7 8 ø22 22 t5 128 1 0 ø3 8 ø9 52 t1 32 0 8 ø1 ø25 40 t5 128 1 0 ø1 2 ø12 7 t1 32 0 8 ø1 1 8 ø28 58 t5 128 1 0 ø5 8 ø15 88 t5 128 1 0 ø1 1 4 ø31 75 t3 64 1 1 ø3 4 ø19 05 over t5 128 1 0 ø1 1 2 ø38 10 over t3 64 1 15 ø1 5 8 ø41 28 over t3 64 1 20 When bending the tubes use a bending radius that is at least 4 times the outer diameter of the tubes In addition take sufficient care to avoid crushing ...

Страница 14: ...ne View as seen from arrow Ball valve BV purchased separately Main tubing Types of vertical trap specifications If only 1 unit is connected a ball valve is also needed on this side Indoor unit 1 When not using ball valve When using ball valve Branch tubing is directed upward Each unit is connected to tubing that is either level or is directed downward Main tubing Indoor unit More than 8 inch Indoo...

Страница 15: ...5 5 16 4 21 64 3 13 16 C C D D 4 31 64 2 53 64 E F Reducing Joints Distribution Joint Insulation Distribution Joint Reducing Joints Gas tubing Liquid tubing Model name Cooling capacity after distribution Remarks 1 APR CHP680BA 232 000 BTU h 68 0 kW or less For outdoor unit 2 APR CHP1350BA 460 700 BTU h 135 0 kW or less For outdoor unit 3 APR P160BA 76 400 BTU h 22 4 kW or less For indoor unit 4 AP...

Страница 16: ...6 E E F G F G H B C D E F E B C D F GH D C B EF 4 31 64 2 53 64 Distribution Joint Distribution Joint Insulation Insulation Reducing Joints Reducing Joints A A A Gas tubing Liquid tubing 6 57 64 5 5 16 4 21 64 3 13 16 H I J C D E F G H 4 31 64 2 53 64 G F F H G G Distribution Joint Distribution Joint Insulation Insulation Reducing Joints Reducing Joints B A C D B B A C D Gas tubing Liquid tubing E...

Страница 17: ...410A refrigerant charge while adjusting the amount being fed a little at a time in order to prevent liquid refrigerant from backing up After charging is completed turn all valves to the fully open position Replace the tubing covers as they were before Required additional refrigerant charge oz CAUTION 1 R410A additional charging absolutely must be done through liquid charging 2 The R410A refrigeran...

Страница 18: ... density limit of 0 3 oz ft 3 countermeasures needed Range below the density limit of 0 3 oz ft 3 countermeasures not needed Obtain liquid tubing size from Tables 1 9 10 11 12 and 15 Main tubing LA ø5 8 ft Total capacity of indoor unit is 179 400 BTU h The longest tubing length in this example LB ø1 2 ft Total capacity of indoor unit is 131 600 BTU h LA 131 ft LC ø3 8 ft Total capacity of indoor u...

Страница 19: ...r operation and maintenance as well as unrestricted air flow around the unit install the unit within the maximum elevation difference above or below the outdoor unit and within a total tubing length L from the outdoor unit as detailed in Table 1 8 allow room for mounting the remote controller about 3 ft off the floor in an area that is not in direct sunlight nor in the flow of cool air from the in...

Страница 20: ...ubing within 1 ft of the front panel because this space is needed as a servicing space for the compressor Ensure a base height of 4 in or more to ensure that drainage water does not accumulate and freeze around the bottom of the unit If installing a drain pan install the drain pan prior to installing the outdoor unit Make sure there is at least 6 in between the outdoor unit and the ground Also the...

Страница 21: ...untermeasures are not taken The fan in the outdoor unit may stop running causing the unit to be damaged There may be no air flow The tubing may freeze and burst The condenser pressure may drop because of strong wind and the indoor unit may freeze 2 5 Precautions When Installing in Heavy Snow Areas a The platform should be higher than the maximum snow depth Fig 2 9 b The 2 anchoring feet of the out...

Страница 22: ...iew Front view Right side view Right side view Ceiling panel unit in Note Can be installed so that the air direction is to the front right left or rear direction 2 6 Dimensions of Wind Ducting Reference diagram for air discharge chamber field supply 31 7 64 33 3 16 5 25 32 74 7 32 2 unit installation maximum dimensions 7 7 8 31 7 64 Installation hole pitch 33 3 16 36 7 32 Installation hole pitch 2...

Страница 23: ...53 55 64 35 3 64 Ceiling panel dimensions 32 7 8 32 7 8 9 13 32 9 13 32 35 3 64 Ceiling panel dimensions 9 13 32 15 16 15 16 53 55 64 31 17 32 31 17 32 1 pc 4 pc 31 17 32 35 3 64 Ceiling panel dimensions Installation hole pitch Installation hole pitch Installation hole pitch 35 3 64 3 15 16 74 1 64 Ceiling panel dimensions 31 7 64 7 7 8 70 5 64 31 17 32 45 5 16 45 5 16 97 29 32 65 53 64 9 29 64 9 ...

Страница 24: ...34 27 32 885 34 27 32 885 12 18 24 36 Length Type A B C D 4 29 64 113 6 13 16 173 8 17 64 210 10 5 64 256 12 18 24 4 29 64 113 6 13 16 173 8 17 64 210 E 3 15 32 88 3 15 32 88 12 9 16 319 36 Length C ceiling opening dimension A suspension bolt pitch B suspension bolt pitch Drain outlet other side VP25 Suspension lug Refregerant tubing joint liquid side Refregerant tubing joint gas side Power supply...

Страница 25: ...connecting the supplied hose Reasons 1 It may cause water to leak from the connection Since the connection is slippery just after the adhesive has been applied the pipe easily slips off 2 The pipe cannot be removed when maintenance is needed Do not bend the supplied drain hose 90 or more The hose may slip off Align the hose bands with the end of the hose Tighten the hose band firmly Please make su...

Страница 26: ...ng the drain pipe The pipe should not be allowed to hang unsupported from its connection to the unit Fasten the pipe to a wall frame or other support as close to the unit as possible Fig 3 11 Provide insulation for any pipes that are run indoors 3 5 Checking the Drainage After wiring and drain piping are completed use the following procedure to check that the water will drain smoothly For this pre...

Страница 27: ... the flap or apply force to it This may cause flap malfunction must be within the range of 15 32 43 64 in If not within this range malfunction or other trouble may result A Ceiling side Main unit Ceiling opening dimension A Fig 3 13 Flap Fig 3 14 Fig 3 15 Latch Screw Remove the air intake grille and air filter from the ceiling panel Figs 3 16 3 17 and 3 18 a Remove the 2 screws on the latch of the...

Страница 28: ...ling panel attached and make fine adjustments to the installation height of the unit to eliminate the gap with the ceiling Fig 3 21 Square hole in unit Temporary fastener Push when you remove Temporary fastener Fig 3 20 1 Drain tubing corner Refrigerant tubing corner DRAIN mark Panel installation hole 4 locations REF PIPE mark Washer head screws Celling panel After completing the wiring process in...

Страница 29: ...ead wire does not become caught Be sure to attach the safety cord that prevents the air intake grille from dropping off to the ceiling panel unit as shown in the figure at right With this ceiling panel the directions of the air intake grille lattices when installing multiple units and the position of the label showing the company name on the corner panel can be changed according to customer reques...

Страница 30: ...ve the louver by hand Proper air flow depends on the location of the air conditioner the layout of the room and furniture etc If cooling or heating seems inadequate try changing the direction of the air flow NOTE 3 7 Special Remarks DC Fan Tap Change Procedure Steps Be sure to turn OFF the power at mains before beginning the work below 1 In the table below check the field supply parts that will be...

Страница 31: ... The relationship between the positions of the suspension lugs unit and ceiling panel is as shown in Fig 3 30 4 Cut the ceiling material if necessary Figs 3 29 and 3 30 If the system requires fresh air to be drawn into the unit cut and remove the insulation both externally and internally at the location shown as in Figs 3 34 and 3 35 A When making the cuts to the insulation be careful not to damag...

Страница 32: ... Unit in CAUTION Use M10 or 3 8 nuts The length of the suspension bolts must be such that there is a space of at least 19 32 in below the bottom of the suspension lugs as shown in Fig 3 33 If the length of the suspension bolts is too long the bolts may interfere with the ceiling panel and louver motor preventing their installation 3 Thread the 3 hexagonal nuts and 2 washers field supply onto each ...

Страница 33: ...nage Fig 3 39 Do not use adhesive at the drain connection port on the indoor unit Insert the drain pipe until it contacts the socket as shown in the figure at right then secure it tightly with the hose band Tighten the hose clamps so their locking nuts face upward Fig 3 39 Do not use the supplied drain hose bent at a 90 angle The maximum permissible bend is 45 Check the drainage at the unit drain ...

Страница 34: ... port is for use only during test runs and servicing inspections Do not connect the drain pipe to the bottom drain port water 0 2 gal Drainage check Drain tube connection transparent Discharge port Fig 3 45 Do not install an air bleeder as this may cause water to spray from the drain pipe outlet Fig 3 41 In cases where it is necessary to raise the height of the drain piping the drain piping can be...

Страница 35: ...e panel Part name Quantity Appearance Part name Quantity Appearance Component Parts ø 1 1 1 6 Ceiling panel Screw M5 40 or 5 16 9 16 Washer head screw 1 2 4 4 12 or 5 32 15 32 3 13 1 Before Installing the Ceiling Panel Checking the position of the indoor unit 1 Check that the dimensions of the ceiling opening are the following 28 47 64 23 17 64 For details refer to the installation manual that was...

Страница 36: ...ten the hooks on both sides of the ceiling panel to the indoor unit The hooks on one side 2 locations are stationary while the hook on the other side is moveable Fig 3 52 2 Angle the panel somewhat and fasten the stationary hook into the fastener on the side of the unit 3 After verifying that the hook is fastened press the other end up until the ceiling panel is level Then press upwards until the ...

Страница 37: ...hat it will not affect the levelness of the indoor unit or the drain piping then the unit height can be adjusted from the side panel installation holes with the ceiling panel still attached Indoor unit Ceiling panel Washer head screw Fig 3 54 Air leakage Ceiling panel air leakage Stains Condensation and water leakage Adjust so that there is no gap Insert a wrench or other standard tool into the si...

Страница 38: ...ure for removing it in the reverse order Fig 3 60 When installing the intake grille be careful that the flap lead wire does not become pinched Fig 3 60 3 13 5 Other A Check after installation Check again that there is no gap between the indoor unit and the ceiling panel or between the ceiling panel and the ceiling surface If there is a gap then water leakage and condensa tion may occur Check that ...

Страница 39: ...23 32 38 19 32 39 31 32 5 1 8 9 21 32 9 21 32 1 9 27 32 12 16 36 56 25 32 54 11 32 9 1 16 6 58 9 32 61 13 32 13 3 16 12 7 32 57 15 32 58 27 32 5 1 8 19 9 32 9 21 32 2 9 7 16 16 18 No of holes Refrigerant tubing joint liquid tube Refrigerant tubing joint gas tube Upper drain port O D 1 1 4 in Bottom drain port O D 1 1 32 in Suspension lug Power supply outlet 2 ø1 3 16 hole Fresh air intake port ø5 ...

Страница 40: ...referring to the dimensional data on the previous page Fig 3 61 and Table 3 3 Tubing must be laid and connected inside the ceiling when suspending the unit If the ceiling is already constructed lay the tubing into position for connection to the unit before placing the unit inside the ceiling 2 Screw in the suspension bolts allowing them to protrude from the ceiling as shown in Fig 3 63 Cut the cei...

Страница 41: ...ly after the connection port can be raised a maximum of 19 11 16 Do not raise it any higher than 19 11 16 as this could result in water leaks Fig 3 71 Do not install the pipe with an upward gradient from the connec tion port This will cause the drain water to flow backward and leak when the unit is not operating Fig 3 72 Do not apply force to the piping on the unit side when connecting the drain p...

Страница 42: ...ake out the booster cable sockets at both ends clamped in the box 4 Securely connect the booster cable sockets between the disconnected fan motor sockets in step 2 as shown in Fig 3 75 5 Place the cable neatly in the box and reinstall the cover plate Fig 3 75 Fig 3 76 Booster cable Booster cable Electrical component box At shipment Booster cable installed Fan motor socket Fan motor How to read the...

Страница 43: ...11 16 Min 23 5 8 Space for service Drain pan Ceiling face Inspection access A 12 13 64 11 13 16 B 1 31 32 2 5 32 1 19 11 16 2 3 4 1 3 8 1 3 8 37 19 32 3 5 32 11 27 64 Suspension bolt pitch 5 1 8 2 23 64 3 35 64 25 32 1 37 64 2 5 32 7 3 15 16 27 9 16 4 3 15 16 15 3 4 19 11 16 38 37 64 Suspension bolt pitch 4 ø20 hole for suspension bolt Drain pan 31 7 32 37 1 57 64 1 13 16 16 ø1 8 Electrical compon...

Страница 44: ...the unit test the strength of each attached suspension bolt 1 When placing the unit inside the ceiling determine the pitch of the suspension bolts referring to the dimensional data given previously Figs 3 77 and 3 78 Tubing must be laid and connected inside the ceiling when suspending the unit If the ceiling is already constructed lay the tubing into position for connection to the unit before plac...

Страница 45: ... install a damper for adjusting air flow volume as air flow volume air flow noise increases If the air conditioner is to be installed in a room such as an office or meeting room which needs a low sound level provide a supply and return noise absorption chamber with an acoustic liner Include an air filter field supply at the return duct 3 23 Indoor Fan Performance How to Read the Diagram The vertic...

Страница 46: ...id tubing Liquid tubing Gas tubing 2 61 64 1 1 4 2 21 64 3 13 16 9 64 3 61 64 2 3 64 1 1 4 2 23 64 Fig 3 87 Fig 3 88 Unit in 3 Unit opening position Refrigerant tubing drain hose power inlet port remote controller wiring inlet port Power supply outlet ø1 3 16 knock out Side panel Side panel Left side drain hose outlet port Rear tubing hole Left side drain hose outlet port Right side drain hose out...

Страница 47: ... the Indoor Unit 1 Place the full scale diagram supplied on the ceiling at the spot where you want to install the indoor unit Use a pencil to mark the drill holes Fig 3 91 Since the diagram is made of paper it may shrink or stretch slightly because of high temperature or humidity For this reason before drilling the holes maintain the correct dimensions between the markings 2 Drill holes at the 4 p...

Страница 48: ...indoor unit is evenly suspended For the installation to be correct leave a clearance of about 3 8 between the ceiling panel and the ceiling surface and fill the gap with an appropriate insulation or filler material 8 If the tubing and wiring are to go towards the rear of the unit make holes in the wall Fig 3 102 9 Measure the thickness of the wall from the inside to the outside and cut PVC pipe at...

Страница 49: ...ain side grasp the hose band with pliers and insert the drain hose all the way to the base If other commercially available hose bands are used the drain hose may become pinched or wrinkled and there is danger of water leakage Therefore be sure to use the supplied hose bands When sliding the hose bands be careful to avoid scratching the drain hose Do not use adhesive when connecting the supplied dr...

Страница 50: ...l go Rubber stopper Screwdriver Drain port CAUTION Check local electrical codes and regulations before wiring Also check any specified instruction or limitations How to carry out power supply wiring 1 Wiring connection ports The power inlet ports are located at the rear and top The remote controller wiring inlet ports are located at the rear and top for use with the wired remote controller For det...

Страница 51: ...outside edge and cut the PVC pipe at a slight angle 15 64 shorter than the thickness of the wall Fig 3 114 6 Place the plastic cover over the end of the pipe for indoor side only and insert in the wall Fig 3 115 The hole should be made at a slight downward gradient to the outside NOTE NOTE Fig 3 110 Fig 3 111 Fig 3 112 Fig 3 113 Fig 3 114 CAUTION Avoid areas where electrical wiring or conduits are...

Страница 52: ...op portion of the grille and reinstall the lower portion of the grille Fit the installation tabs into the grooves and press the lower portion of the grille back into its original position to install it 3 Press on the installation tabs to completely close the grille Check that the grille and frame are fitted tightly together 3 33 Preparing the Tubing 1 Arrangement of tubing by directions a Right or...

Страница 53: ...ng tension is applied to it 3 Push the wiring refrigerant tubing and drain hose through the hole in the wall Adjust the indoor unit so it is securely seated on the rear panel Left or left rear tubing 1 Pass the tubing and drain hose into the rear of the indoor unit Provide sufficient length for the connections to be made Next bend the tubing with a pipe bender and connect them 2 After performing a...

Страница 54: ...nks This setting is not necessary if both the wired remote controller and wireless remote controller are used The location of the switch varies depending on the type of PCB used Check the model name before making the setting KHX0752 0952 1252 1852 KHX2452 Setting at time of factory shipment Setting at time of factory shipment Slide No 3 on SW101 from ON OFF Slide No 3 on SW101 from ON OFF CR KR74G...

Страница 55: ... edges of the top panel from being scratched Be careful of the fan There is danger of injury if the fan starts to turn during inspection Be sure to turn OFF the remote power switch before beginning inspection 4 2 Installing the Outdoor Unit 1 Use anchor bolts M12 or 15 32 or similar to securely anchor the unit in place Fig 4 2 2 Be sure the rubber vibration insulator and platform extend to the ins...

Страница 56: ... contained inside the unit Therefore remove the front panel Fig 4 6 1 If the tubing is routed out from the front use cutting pliers or a similar tool to cut out the tubing outlet slit part indicated by from the tubing cover Figs 4 5 and 4 6 2 If the tubing is routed out from the bottom remove the slit part Use a drill bit approximately 13 64 dia to create holes at the 4 slit hole indentations open...

Страница 57: ...l the tube ends by means of caps or taping to prevent dust moisture or other foreign substances from entering the tubes Refrigerant tubing Existing tubing can be used 4 5 Connect the Tubing Use the supplied connector tubing See figure below 1 2 3 Yes ø1 ø1 1 8 Connection method Supplied parts used Gas tubing Liquid tubing Balance tube Brazing Flare connection Flare connection No No 1 2 3 Refrigera...

Страница 58: ...ervice port cap width 19 32 Valve cap width 55 64 Valve cap width 55 64 15 16 Valve cap width 55 64 Valve cap width 55 64 Service port cap width 43 64 Service port cap width 19 32 Flare nut ø1 4 Flare nut ø3 8 Service port cap width 19 32 Valve cap width 15 16 Valve cap width 55 64 Valve cap width 55 64 Cap tightening torque Be careful of the cap sizes The sizes of the service port cap and valve c...

Страница 59: ...wiring can be very dangerous The manufacturer will accept no responsibility for any damage or misoperation that occurs as a result of such unauthorized changes 7 Regulations on wire diameters differ from locality to locality For field wiring rules please refer to your LOCAL ELECTRICAL CODES before beginning You must ensure that installation complies with all relevant rules and regulations 8 To pre...

Страница 60: ... Ground C Ground Inter outdoor unit control wiring U2 U1 L2 L1 R2 R1 U2 U1 L2 L1 R2 R1 U2 U1 L2 L1 R2 R1 NOTE 1 Refer to Section 5 2 Recommended Wire Length and Wire Diameter for Power Supply System for the explanation of A B C D and E in the above diagram 2 The basic connection diagram of the indoor unit shows the 7P terminal board so the terminal boards in your equipment may differ from the diag...

Страница 61: ... of the outdoor units When shipping In shorted condition Otherwise the communication of S net link system is not performed For a system without link no connection wiring between outdoor units do not remove the short plug 2 Do not install the inter unit control wiring in a way that forms a loop Fig 5 1 Outdoor unit Outdoor unit Outdoor unit Prohibited Prohibited Indoor unit Indoor unit Indoor unit ...

Страница 62: ...ng is tightly connected When connecting each power wire to the terminal follow the instructions on How to connect wiring to the terminal and fasten the wire securely with the fixing screw of the terminal plate How to connect wiring to the terminal For stranded wiring 1 Cut the wire end with cutting pliers then strip the insulation to expose the stranded wiring about 3 8 in and tightly twist the wi...

Страница 63: ...nger than the tubing length you estimate 2 Remove burrs at the end of the copper tube with a tube reamer or file This process is important and should be done carefully to make a good flare Fig 6 1 When reaming hold the tube end downward and be sure that no copper scraps fall into the tube Fig 6 2 3 Remove the flare nut from the unit and be sure to mount it on the copper tube 4 Make a flare at the ...

Страница 64: ...e nuts apply specified torque as at right When removing the flare nuts from the tubing connections or when tightening them after connecting the tubing be sure to use 2 monkey wrenches or spanners as shown Fig 6 6 If the flare nuts are over tightened the flare may be damaged which could result refrigerant leakage and cause in injury or asphyxiation to room occupants For the flare nuts at tubing con...

Страница 65: ...sulator at both ends with the supplied vinyl clamps Fig 6 8 Insulation material The material used for insulation must have good insulation characteristics be easy to use be age resistant and must not easily absorb moisture After a tube has been insulated never try to bend it into a narrow curve because it can cause the tube to break or crack CAUTION CAUTION Never grasp the drain or refrigerant con...

Страница 66: ...tubing overlap half of each previous tape turn 3 Clamp the tubing bundle to the wall using 1 clamp approx each ft Fig 6 10 Do not wind the armoring tape too tightly since this will decrease the heat insulation effect Also ensure that the condensation drain hose splits away from the bundle and drips clear of the unit and the tubing 6 5 Finishing the Installation After finishing insulating and tapin...

Страница 67: ... Leak test 1 With the service valves on the outdoor unit closed remove the 5 16 flare nut and its bonnet on the gas tube service valve Save for reuse 2 Attach a manifold valve with pressure gauges and dry nitrogen gas cylinder to this service port with charge hoses 3 Pressurize the system to no more than 469 psig 33 kgf cm2G with dry nitrogen gas and close the cylinder valve when the gauge reading...

Страница 68: ... end described in the preceding steps to the vacuum pump to evacuate the tubing and indoor unit Confirm that the Lo knob of the manifold valve is open Then run the vacuum pump The opera tion time for evacuation varies with the tubing length and capacity of the pump The following table shows the amount of time for evacuation Manifold valve Pressure gauge Lo Hi Vacuum pump Outdoor unit Close Open Li...

Страница 69: ...ervice valve stem counter clockwise to fully open the valve 2 Turn the gas tube service valve stem counter clockwise to fully open the valve 3 Loosen the charge hose connected to the gas tube service port 5 16 slightly to release the pressure then remove the hose 4 Replace the 1 4 in flare nut and its bonnet on the gas tube service port and fasten the flare nut securely with an adjustable wrench o...

Страница 70: ...be warm to the touch and the crankcase heater around the feet of the compressor should be hot to the touch Fig 8 1 6 Both the gas and liquid tube service valves are open If not open them now Fig 8 2 7 Request that the customer be present for the trial run Explain the contents of the instruction manual then have the customer actually operate the system 8 Be sure to give the instruction manual and w...

Страница 71: ...sockets to the OPEN side Outdoor unit control PCB Unit No setting switch S007 Outdoor unit control PCB Unit No setting switch S006 Outdoor unit control PCB Unit No setting switch S004 and S005 Outdoor unit control PCB Unit No setting switch S002 and S003 Check the link wiring 1 The unit with the unit No set to 1 is the main unit All other units are sub units Note It is not necessary to remove the ...

Страница 72: ...72 8 3 Main Outdoor Unit PCB Setting S003 CN100 CN101 CN003 S002 S004 S005 S006 S007 Fig 8 4 07 007 W 2WAY_II_NA 1 23 07 6 09 PM Page 72 ...

Страница 73: ...factory setting 1 unit factory setting 11 units 21 units 31 units All OFF No of outdoor units Outdoor unit setting S006 3P DIP switch blue Address setting of outdoor unit S007 3P DIP switch blue 1 unit factory setting 1 ON 2 units 2 ON 3 units 1 2 ON 4 units 3 ON Address setting of sub outdoor unit Unit No setting Address setting of outdoor unit S007 3P DIP switch blue Unit No 2 sub unit factory s...

Страница 74: ...g Unit No 2 Unit number setting Unit No 3 Leave the socket that is used to short circuit the terminal plug CN003 0 Case 1 Fig 8 5 3 On the outdoor main unit control PCB check that the system address rotary switch S002 is set to 1 and that the DIP switch S003 is set to 0 These are the settings at the time of factory shipment 4 To set the number of indoor units that are connected to the outdoor unit...

Страница 75: ...o 1 main outdoor unit settings No 2 sub unit settings Unit No 2 Sub Unit No 3 Sub Unit No 1 Main Outdoor unit system 1 Unit No 2 Sub Unit No 1 Main Outdoor unit Indoor unit Remote controller Indoor unit Remote controller Outdoor main sub control wiring Outdoor main sub control wiring Inter unit control wiring Inter unit control wiring Remote controller communication wiring Remote controller cross ...

Страница 76: ...ary switch S004 to 3 5 Turn on power to all indoor and outdoor units in the system 6 Short circuit the automatic address pin at the outdoor main unit CN100 for 1 second or longer then release it Communication for automatic address setting begins Automatic address setting is completed when LEDs 1 and 2 on the outdoor main unit control PCB turn OFF 7 Next turn the power ON only for the indoor and ou...

Страница 77: ...omatic address setting begins the compressors turn ON and automatic address setting in Heating mode begins All indoor units operate Automatic address setting is completed when the compressors stop and LEDs 1 and 2 on the main unit control PCB turn OFF 7 At the outdoor main unit in the next different system short circuit the automatic address pin CN100 for 1 second or longer then release it Repeat ...

Страница 78: ...ddress pin CN100 for 1 second or longer then release it Repeat the same steps to complete automatic address setting for all units 8 Operation from the remote controllers is now possible Automatic address setting in Cooling mode cannot be done from the remote controller Automatic Address Setting from the Remote Controller Selecting each refrigerant system individually for automatic address setting ...

Страница 79: ... Table of Self Diagnostic Functions and Description of Alarm Displays Note indicates that the solenoid is fused or that there is a CT detection current failure current is detected when the compressor is OFF Display during automatic address setting On outdoor main unit PCB When automatic address setting has been successfully completed both LEDs 1 and 2 turn OFF LED 1 is D72 LED 2 is D75 If automati...

Страница 80: ...its which is connected to the remote controller Check that the fan of that indoor unit starts and that air is discharged 5 Press the button again and check the address of each indoor unit in sequence 6 Press the button again to return to normal remote controller mode 8 5 Remote Controller Test Run Settings 1 Press the remote controller button for 4 seconds or longer Then press the button TEST RUN ...

Страница 81: ... that recommended do not conduct pump down In this case use another refrigerant collecting system 8 6 Caution for Pump Down Pump down means refrigerant gas in the system is returned to the outdoor unit Pump down is used when the unit is to be moved or before servicing the refrigerant circuit Refer to the Service Manual 07 007 W 2WAY_II_NA 1 23 07 6 09 PM Page 81 ...

Страница 82: ...or of outdoor unit address setting The number of connected main and sub outdoor units do not correspond to the number set at main outdoor unit PCB Error of sub outdoor unit in receiving serial communication signal from main outdoor unit Error of main indoor unit in receiving serial communication signal from sub indoor units Duplication of main indoor unit address setting in group control Duplicati...

Страница 83: ...tivated Power supply voltage is unusual The voltage is more than 260 V or less than 160 V between L1 and L2 phase Incorrect discharge temperature Comp No 1 High pressure switch is activated Negative defective phase Incorrect discharge temperature Comp No 2 Activation of protective device Outdoor unit fan motor is unusual Inverter for compressor is unusual DC compressor does not operate Overcurrent...

Страница 84: ...e controller or system controller in order to check the alarm message in detail connect wired remote controller to indoor unit temporarily Error in transmitting serial communication signal Error in receiving serial communication signal Protective device of sub indoor unit in group control is activated Serial communication errors Mis setting Activation of protective device C05 C06 P30 1 Alarm messa...

Страница 85: ... vacuum cleaner brush or wipe them Indoor unit with a clean soft cloth If these parts are stained use a clean cloth moistened with a mild liquid detergent When clean ing the air outlet side be careful not to force the vanes out of place Air filter The air filter collects dust and other particles from the air and should be cleaned at regular intervals as indicated in the table below or when the fil...

Страница 86: ... turned off 4 Press the button again 5 The wired remote control unit or heat pump is The inspection mark and the letters E F H L P in combination with numbers appear the LCD of the wired remote control unit 5 Consult your dealer Compressor runs but soon stops 1 Obstruction in front of condenser coil 1 Remove obstruction Poor cooling or heating performance 1 Dirty or clogged air filter 1 Clean air ...

Страница 87: ...with a vacuum cleaner brush or wipe them Indoor unit with a clean soft cloth If these parts are stained use a clean cloth moistened with a mild liquid detergent When cleaning the air outlet side be careful not to force the vanes out of place How to clean the filter 1 Remove the air filter from the air intake grille 2 Use a vacuum cleaner to remove light dust If there is sticky dust on the filter w...

Страница 88: ...e control unit or heat pump is The inspection mark and the letters E F H L P in combination with numbers appear the LCD of the wired remote control unit 5 Consult your dealer Compressor runs but soon stops 1 Obstruction in front of condenser coil 1 Remove obstruction Poor cooling or heating performance 1 Dirty or clogged air filter 1 Clean air filter to improve the 2 Heat source or many people in ...

Страница 89: ...t side of the indoor unit with a vacuum cleaner brush or wipe them Indoor unit with a clean soft cloth If these parts are stained use a clean cloth moistened with a mild liquid detergent When clean ing the air outlet side be careful not to force the vanes out of place How to clean the filter 1 Remove the air filter from the air intake grille 2 Use a vacuum cleaner to remove light dust If there is ...

Страница 90: ... Doors and or windows are open 3 Shut them to keep the heat or cold out 4 Obstacle near air intake or air discharge port 4 Remove it to ensure good airflow 5 Thermostat is set too high for or too low for heating 5 Set the temperature lower or higher 6 Defrosting system does not work 6 Consult your dealer Trouble Possible Cause Remedy airflow cooling malfunctioning on Tips for Energy Saving Avoid D...

Страница 91: ...be especially careful when you clean these parts 3 The internal coil and other components of the outdoor unit must be cleaned every year Consult your dealer or service center Air intake and outlet side Clean the air intake and outlet side of the indoor unit with a vacuum cleaner brush or wipe them Indoor unit with a clean soft cloth If these parts are stained use a clean cloth moistened with a mil...

Страница 92: ...trol unit or heat pump is The inspection mark and the letters E F H L P in combination with numbers appear the LCD of the wired remote control unit 5 Consult your dealer Compressor runs but soon stops 1 Obstruction in front of condenser coil 1 Remove obstruction Poor cooling or heating performance 1 Dirty or clogged air filter 1 Clean air filter to improve the 2 Heat source or many people in room ...

Страница 93: ...ay of the remote control unit wired type shows that the filter needs cleaning If the filter gets blocked the efficiency of the air conditioner drops greatly How to clean the filter 1 Remove the air filter from the air intake grille 2 Use a vacuum cleaner to remove light dust If there is sticky dust on the filter wash the filter in lukewarm soapy water rinse it in clean water and dry it Type Period...

Страница 94: ... room 2 Eliminate heat source if possible 3 Doors and or windows are open 3 Shut them to keep the heat or cold out 4 Obstacle near air intake or air discharge port 4 Remove it to ensure good airflow 5 Thermostat is set too high for or too low for heating 5 Set the temperature lower or higher 6 Defrosting system does not work 6 Consult your dealer Trouble Possible Cause Remedy airflow cooling malfu...

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