Precautions for safety
Contents
1. Relay kit an accessory to a branching controller Branching controller Indoor unit 2 _ _ p Earth J Signal wire l CnT2 Red a 5P CnT2 1 I I Control board Relay kit Indoor uniti o o an accessory to a branching controller Control box cany Signal wire Power wire One place Please connect a signal wire from a relay kit to the connector of the same connection port number with the coolant pipe Appearance drawing of a relay kit Please connect the power cable of a branching controller to the indoor unit s unit CnU at one place Fixing hole 66 eA 25 PLEASE NOTE se 2 1 2 3 Do not extend the signal wire between an indoor unit and a relay kit beyond a 2 m cable supplied as an accessory 4 To extend signal cables connecting between a relay kit and a branching controller and a power cable connecting 4 between an indoor unit and a branching controller please use the cables specified below In extending these cables make sure that the consistency of cable colors is maintained When you extend signal and power cables do not forget to extend a grounding wire accordingly as well Signal wire 2 0 2 0 mm X 5 pieces 100 Aes ar Power wire 2 0 2 0 mm X 2 pieces 5 Please connect the earth wire from a branching controller to an indoor unit and relay kits 6 Please fix a relay kit with 2 screws to be procured on the installer2. medical equipments or telecommunicationand equipments and obstruct their medical activity or cause jamming Do not mix air in to the cooling cycle on installation or removal of the air conditioner If air is mixed in the pressure in the cooling cycle will rise abnormally and may cause explosion and injuries Be sure to have the electrical wiring work done by qualified electrical installer and use exclusive circuit Power source with insufficient capacity and improper work can cause electric shock and fire Do not install the indoor unit at the place listed below Places where flammable gas could leak Places where carbon fiber metal powder or any powder is floated Place where the substances which affect the air conditioner are generated such as sulfide gas chloride gas acid or alkali Places exposed to oil mist or steam directly S On vehicles and ships Places where machinery which generates high harmonics is used Places where cosmetics or special sprays are frequently used Highly salted area such as beach Heavy snow area Places where the system is affected by smoke from a chimney Altitude over 1000m Use specified wire for electrical wiring fasten the wiring to the terminal securely and hold the cable securely in order not to apply unexpected stress on the terminal Loose connections or hold could result in abnormal heat generation or fire Check for refrigerant gas leakage after in
3. irregular joint B which is provided Suspension bolt position Outdoor refrigerant piping connection port discharge gas 915 88 Brazing M10 X 4 bolts When connecting 919 05 use the Parts procured locally irregular joint C which is provided q Gey lt 0 j 8 _ ERS i y 308 4 Heat insulation of pipes O Do not fail to dress with a pipe cover supplied as an accessory for heat insulation 4 ELECTRICAL WIRING WORK Heat insulation accessory er Fasten with a band Heat insulation to be implemented on the installer s part O Please implement cabling according to the instructions contained in the drawing below Indoor unit Relay kit Branching controller r an accessory to a branching controller O Earth Control box q D on cs S b a Signal wire 1 cnt2 amp Red 3 Q n cnt2 1 CnB 1 Control board 7 OS Cnu Me 1 Power unit Terminal block Power cables PLEASE NOTE 1 Do not extend the signal wire between an indoor unit and a relay kit beyon 2 When you have to extend the signal wire between a relay kit and a branchin Please take heed of cable colors
4. G IN provided for the outdoor unit gas suction pipe the outdoor unit gas discharge pipe and indoor unit gas pipes respectively so please make sure that you connect correct pipes to correct ports O No liquid pipe needs to be connected to a branching controller OA unit must not be operated or left for a long time without completing the connection of individual branching controllers and indoor units Pipes are to be blazed to connect to a branching controller O When brazing work perform it while cool down around the brazing port with wet towels to prevent the overheating O After check the gas leak test install the heat insulation prepare on site to the brazing port of the indoor unit Pipe connection When the diameter of the pipe on a branching controller is different from that of the connection pipe use a different diameter pipe joint supplied as an accessory 340 Pipe connection When the diameter of the pipe on a branching controller is different from that of the connection pipe use a different diameter pipe joint supplied as an accessory e PFD1123 E Indoor refrigerant piping connection port gas 915 88 Brazing Outdoor refrigerant piping connection port suction gas 915 88 Brazing irregular joint A which is provided When connecting 912 7 use the pa connecting 09 52 use the irregular joint B which is provided irregular joint A which is provided When connecting 012 7 use the i
5. is in operation or stands still When it is installed in a place with a low background noise level please take appropriate precautions such as installing it away from the indoor unit O The position where you can install refrigerant pipes within the specified restrictions on length O The position where you can install hanger bolts and secure a required level of strength The position where pulling force of 20 kg per bolt is endured O The position where a service space conforming to the requirements shown in the drawing on the right can be secured PLEASE NOTE 1 Do not fail to provide an inspection port at the specified position 2 In fastening on the hanger bolts use a bracket and fasten at the four points as illustrated in the drawing on the right 3 A branching controller cannot be installed upside down Please install it in such a manner that the main body remains level 3 REFRIGERANT PIPING 350 or more irregular joints packed 500 or greater if the with the units are used 100 or more b Service space DE 350 or more 500 or greater if the irregular joints packed with the units are used Hanger bolt M10 M10 nut Washer for M10 DLT a Spring washer for M10 T1 E O A branching controller has on its main body beneath the connection ports such indications as S G OUT D G OUT and
6. 5 units In this case Five indoor units can only be operated in a mode gt lt When installing more than one indoor unit at the downstream from a branching controller set it such a manner that all of them will be operated in the same cooling heating mode by either one of the following methods Control of more than one indoor unit with one remote control unit Same cooling heating control in master slave indoor unit Refer to the installation manual of outdoor unit Make sure that no accessory is missing PCB012D026 ndoor units should not be connected to a branching controller when they exceed a range specified for either combined total capacity or number in the table below Different diameter pipe joint Heat insulation material For outdoor unit suction gas piping For outdoor unit For outdoor unit suction gas piping Liquid side header Pipe cover For liquid side header TY RAP band Relay kit For indoor unit gas piping discharge gas piping A B c 1012 7 19 52 119 05 1015 88 129 52 amp F i eZ Tu 10127 0015 88 0022 22 1018 05 ITU a gQ 0D15 88 D22 22 109 52 5 piece 1 piece 1 piece 1 piece 6 pieces 1 piece 12 pieces 4 pieces 2 INSTALLATION OF A BRANCHING CONTROLLER Selecting the installation location OA branching controller sometimes generates noises during control operations whether the system i
7. 7 6 Branching controller installation guide for cooling heating free multi installations Indoor units are the same with those of Inverter Multi specifications Please lay refrigerant piping electrical cables including signal wires and operate units according to this installation guide indoor and outdoor unit installation manuals Precautions for safety Read the SAFETY PRECAUTIONS carefully first of all and then strictly follow it during the installation work in order to protect yourself The precautionary items mentioned below are distinguished into two levels A WARNING Jand A CAUTION AWARNING Wrong installation would cause serious consequences such as injuries or death A CAUTION Wrong installation might cause serious consequences depending on circumstances Both mentions the important items to protect your health and safety so strictly follow them by any means After completing the installation do commissioning to confirm there are no abnormalities and explain to the customers about SAFETY PRECAUTIONS correct operation method and maintenance method air filter cleaning operation method and temperature setting method with user s manual of this unit Ask your customers to keep this installation manual together with the user s manual Also ask them to hand over the user s manual to the new user when the owner is changed S A WARNING A CAUTION Perform e
8. arth wiring surely Do not connect the earth wiring to the gas pipe water pipe lightning rod and telephone earth wiring Improper earth could cause unit failure and electric shock due to a short circuit Never connect the grounding wire to a gas pipe because if gas leaks it could cause explosion or ignition Installation should be performed by the specialist If you install the unit by yourself it may lead to serious trouble such as water leakage electric shock fire and injury due to overturn of the unit Q Install the system correctly according to these installation manuals Improper installation may cause explosion injury water leakage electric shock and fire Do not install the indoor unit near the location where there is possibility of flammable gas leakages If the gas leaks and gathers around the unit it could cause fire Consider measurement not to exceed the limit of the density of refrigerant in the event of leakage especially when it is installed in a small room Do not install and use the unit where corrosive gas such as sulfurous acid gas etc or flammable gas such as thinner petroleum etc may be generated or accumulated or volatile flammable substances are handled It could cause the corrosion of heat exchanger breakage of plastic parts etc And inflammable gas could cause fire Consult the specialist about the measure If the density of refrigerant exceeds the limit in the e
9. capacity downstream Number of connectable units PFD1123 E Less than 112 1 5 PFD1803 E 112 or more but less than 180 1 8 PFD2803 E 180 or more but 280 or less 1 10 Inspection port 450 gt lt When installing more than one indoor unit at the downstream from a branching controller set it such a manner that all of them will be operated in the same cooling heating mode by either one of the following methods Control of more than one indoor unit with one remote control unit OSame cooling heating control in master slave indoor unit Refer to the installation manual of outdoor unit Make sure that no accessory is missing PCB012D025 340 Service space In case of PFD112 and 180 280 In case of PFD280 350 Branching Different diameter pipe joint Heat controller For outdoor unit gas suction pipe A insulation Relay kit model type For Indoor unit gas pipe For outdoor unit gas discharge pipe material i D952 B 1012 7 c 1D9 52 7 106 35 PFD112 mmm mam A 0D15 88 2 pieces 0D15 88 2 pieces 0D12 7 1 piece 0D12 7 1 piece PFD180 None None None E 3 pieces A 1D19 05 B 1D22 22 Cc 1D19 05 PFD280 e 0016 88 pieces OD15 88 9 pieces 0D15 88 4 piece 2 INSTALLATION OF A BRANCHING CONTROLLER Selecting the installation location O A branching controller sometimes generates noises during control operations whether the system
10. e connecting 09 52 use the irregular joint B which is provided t cy 7 a I at _ al Yet h 1 1 2 E _ 15 Outdoor refrigerant pipin Suspension bolt position 338 4 wee Brang discharge gas M10 X 4 bolts Parts procured locally 185 8 e PFD2803 E When connecting 99 52 use the irregular joint C which is provided When connecting 96 35 use the irregular joint D which is provided Outdoor refrigerant piping connection port suction gas 615 88 Brazing e PFD1803 E Outdoor refrigerant piping connection port suction gas 015 88 Brazing t cy m Fi ig inn a a R i elz R A a Indoor refrigerant piping 1 I connection port gas 015 88 Brazing es 45 15 Suspension bolt position 338 4 gt Outdoor refrigerant piping M10 X 4 bolts connection port discharge gas Parts procured locally PEER UCE o siny E 2D 308 4 When connecting g19 05 use the irregular joint A which is provided When connecting g22 22 use the irregular joint B which is provided bd s a Indoor refrigerant piping a connection port gas 915 88 Brazing When connecting 919 05 use the irregular joint A which is provided When connecting 622 22 use thi e
11. ircuit and it could cause explosion and injuries due to abnormal high pressure in the cooling cycle Ensure the insulation on the pipes for refrigeration circuit so as not to condense water Q Incomplete insulation could cause condensation and it would wet ceiling floor and any other valuables Use the genuine optional parts And installation should be performed by a specialist If you install the unit by yourself it could cause water leakage electric shock and fire Pay extra attention carrying the unit by hand Carry the unit with 2 people if it is heavier than 20kg Do not use the plastic straps but the grabbing place moving the unit by hand Use protective gloves in order to avoid injury by the aluminum fin Do not repair by yourself And consult with the dealer about repair Improper repair may cause water leakage electric shock or fire Consult the dealer or a specialist about removal of the air conditioner Improper installation may cause water leakage electric shock or fire Make sure to dispose of the packaging material Leaving the materials may cause injury as metals like nail and Q woods are used in the package Turn off the power source during servicing or inspection work If the power is supplied during servicing or inspection work it could cause electric shock and injury by the operating fan Do not touch the refrigerant piping with bare hands when in operation The pipe during operatio
12. ly as illustrated in the drawing below Cautions when carrying a unit _ Outdoor unit side _ refrigerant pipe connection port Lit ITT J uid 6 35 Blazed Lo X ULL OIT Y x he unit Outdoor refrigerant piping connection port discharge gas 915 88 Brazing When connecting wit 190 When connecting 019 05 use the irregular joint B which is provided 912 7 pipe Cut off to connect with the irregular joint A supplied with the unit 729 Outdoor refrigerant piping connection port suction gas 922 22 Brazing Wain EO SNS oor surface Please use them e at the middle of a When connecting with 919 05 pipe Cut off to connect with the irregular joint C supplied with the unit 480 ou Indoor refrigerant piping connection port gas 915 88 Brazing When connecting 09 52 use the irregular joint Awhich is provided When connecting with 12 7 pipe Cut off to connect with the irregular joint A supplied with the unit 100 or more 600 or more branch horizontally Hanger bolt M10 nut Spring washer for M10 J Main todi Naat mo fixing metal s obli O In carrying the unit please hold it by the hooks Holding pipes can result in pipe deformation and a unit failure O Do not put your hand in the notch area for fear tha
13. n would become very hot or cold according to the operating condition and it could cause a burn or frostbite Do not clean up the air conditioner with water S It could cause electric shock Do not run the unit when the panel or protection guard are taken off Touching the rotating equipment hot surface or high voltage section could cause an injury to be caught in the machine to get burned or electric shock Do not turn off the power source immediately after stopping the operation S Be sure to wait for more than 5 minutes Otherwise it could cause water leakage or breakdown Shut off the power before electrical wiring work It could cause electric shock unit failure and improper running 0 9000 0 SSGG GooS S000 339 a Branching controller 1 BEFORE BEGINNING INSTALLATION Limitation on the number of branching controllers which can be connect ed to a outdoor unit is as follows Outdoor unit Minimum number of units to be able to connect 280 2 units 560 4 units 850 6 units 1130 8 units 1360 10 units XFor PFD112X4 E model calculate the number of units taking 1 branching controller as 4 controllers in this limit The combined total capacity and the number of indoor units connected in the downstream of a branching controller are subject to restrictions depicted in the table below Branching controller model type Total
14. s in operation or When it is installed in a place with a low background noise level please take appropriate precautions stands still such as installing it away from the indoor unit OThe position where you can install refrigerant pipes within the specified restrictions on length OThe position where you can install hanger bolts and secure a required level of strength The position where pulling force of 20 kg per bolt is endured OThe position where a service space conforming to the requirements shown in the drawing on the right can be secured PLEASE NOTE 1 Do not fail to provide an inspection port at the specified position 2 A branching controller cannot be installed upside down Please install it in such a manner that the main body is held levelly 1300 Inspection port E1300 The positions of hanger bolts Use four M10 bolts for the hanging bolts to be procured from a local supplier Liquid refrigerant Gutdoor unit Si ui id it l 9 52 Blazed 12 7 Cut off to connect 9 52 Cut off to connect Holizontal THT Jo Hil Taian ELOOe SUIfaCe TH lx Tama FIOOr Surface NOTE 1 Heat insulating materials are supplied with 2 Please cut off a pipe suitably on the installation si section of a diameter to be used 3 Please install a header in such a manner that it wi 100 Please fasten secure
15. s part on the back of the ceiling or a wall in the proximity of an indoor unit 7 When installation work is completed please check the above mentioned points for any connection errors 85 50 343
16. so that cables may maintain the consisten Earth color scheme Signal wire 2 0 2 0 mm X 5 pieces 3 Please connect the earth wire from a branching controller to an indoor unit and relay kit 4 Please fix a relay kit with 2 screws to be procured on the installer s part on the back of the ceiling or a wall in the proximity of an indoor unit 5 When installation work is completed please check the above mentioned points for any connection errors a 2 m cable supplied as an accessory g controller use the following cables O Appearance drawing of a relay kit Fixing hole 6 100 90 341 50 b Integrated branching controller 1 BEFORE BEGINNING INSTALLATION Limitation on the number of branching controllers which can be connected to a outdoor unit is as follows Outdoor unit Minimum number of units to be able to connect 280 2 units 560 4 units 850 6 units 1130 8 units 1360 10 units gt xFor PFD112X4 E model calculate the number of units taking 1 branching controller as 4 controllers in this limit Total of four branches Per branch Branching controller model Capacity restrictions Maximum number of units connectable Capacity restrictions Maximum number of units connectable PFD1123X4 E Less tl han 371 16 units Less than 112
17. stallation is completed If the refrigerant gas leaks into the house and comes in contact with a fan heater a stove or an oven toxic gas is produced Use the specified pipe flare nut and tools for R410A Using existing parts R22 could cause the unit failure and serious accident due to explosion of the cooling cycle Tighten the flare nut according to the specified method by with torque wrench If the flare nut were tightened with excess torque it could cause burst and refrigerant leakage after a long period is corroded or damaged after a long period of use Do not use the base frame for the outdoor unit which S It could cause the unit falling down and injury Connect the pipes for refrigeration circuit securely in installation work before compressor is operated If the compressor is operated when the service valve is open without connecting the pipe it could cause explosion and injuries due to abnormal high pressure in the system Pay attention not to damage the drain pan by weld sputter when brazing work is done near the unit Q If sputter entered into the unit during brazing work it could cause damage pinhole of drain pan and leakage of water To avoid damaging keep the indoor unit packed or cover the indoor unit Stop the compressor before removing the pipe on pump down work If the pipe is removed when the compressor is in operation with the service valve open air would be mixed in the refrigeration c
18. t you should get hurt O Since the unit is heavy 30kg take care in handling it 342 7 sa 150 or more Service space long hole When you install the main body but you cannot position it properly to the opening of the ceiling please adjust the position by moving it along a 3 REFRIGERANT PIPING OA branching controller has on its main body beneath the connection ports such indications as S G OUT D G OUT and I G IN provided for the outdoor unit gas suction pipe the outdoor unit gas discharge pipe and indoor unit gas pipes respectively so please make sure that you connect correct pipes to correct ports O No liquid pipe needs to be connected to a branching controller O Pipes are to be blazed to connect to a branching controller OWhen brazing work perform it while cool down around the brazing port with wet towels to prevent the overheating O After check the gas leak test install the heat insulation prepare on site to the brazing port of the indoor unit Heat insulation accessory Refrigerant pipe connection io O Please heat insulate a pipe connection with a pipe cover or a flange cover supplied with the unit without fail Fasten with a band Heat insulation to be implemented on the installer s part 4 ELECTRICAL WIRING WORK O Please implement cabling according to the instructions contained in the drawing below
19. vent of the leakage serious accidents may occur due to lack of oxygen Use the genuine accessories and the specified parts for installation If parts unspecified by our company are used it could cause water leakage electric shock fire and injury due to overturn of the unit Ventilate the working area well in case the refrigerant leaks during installation If the refrigerant contacts the fire toxic gas is produced Do not use the indoor unit at the place where water splashes such as laundry S Indoor unit is not waterproof It could cause electric shock and fire Do not use the indoor unit for a special purpose such as food storage cooling for precision instrument preservation of animals plants and a work of art It could cause the damage of the items Install the unit in a location that can hold heavy weight Improper installation may cause the unit to fall leading to accidents Install the unit properly in order to be able to withstand strong winds such as typhoons and earthquakes f S k Do not install nor use the system near equipments Improper installation may cause the unit to fall leading to accidents which generate electromagnetic wave or high harmonics Equipments like inverter equipment private power generator high frequency medical equipment or telecommunication S equipment might influence the air conditioner and cause a malfunction breakdown Or the air conditioner might influence
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