LG MULTI V WATER IV ARWV100DAL4 Installation Manual Download Page 20

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Outside Unit

Refrigerant piping installation

1) Water pipe system diagram

• The water pressure resistance of the water pipe system of this product is 1.98MPa

• When the water pipe passes indoors, make sure to execute heat insulation on the pipe so that water drops do not form on

the outer side of the water pipe.

• The size of the drain pipe must be equal to or larger than the diameter of the connecting product.

- Always install a trap so that the drained water does not back flush.

• Always install a strainer (20 Mesh or above) at the entrance of the water pipe. (When sand, trash, rusted pieces get mixed

into the water supply, it can cause problems to the product due to blocking)
- If On/Off valve is applied, by interlocking with outside unit, it can save the energy consumption of pump by blocking the

water supply to the outside unit not operating. Select appropriate valve and install on site if necessary.

• Install a pressure gauge and temperature gauge at the inlet and outlet of the water pipe.

• Flexible joints must be installed not to cause any leakage from the vibration of pipes.

• Install a service port to clean the heat exchanger at the each end of the water inlet and outlet.

• For the components of the water pipe system, always use components above the designed water pressure.

2) Water pipe connection

• The water pipe should be the same size of the connection on the product or more.

• If necessary install the insulation material in the water pipe inlet/outlet to prevent water drop, freeze and to save energy.

(Use the above 20mm thickness PE insulation material.)

• Tightly connect the socket to the water pipe refer to below table for recommended specification.

(Too much torque may cause the damage of the facility.)

Flow control valve

Air vent

Presssure/Temperature gage

Service Port

Strainer

On/Off Valve

Drain line

Flow control valve

BALL V/V(TYP.)

FLEXIBLE JOINT
SUS(TYP.)(7)

Do not directly connect the drain outlet to the water pipe outlet.
(It can cause problems to the product.)

CAUTION

Installation of water pipe

MFL67705803 2018. 9. 17. 오오 12:58 Page 20

Summary of Contents for MULTI V WATER IV ARWV100DAL4

Page 1: ...he national wiring standards by authorized personnel only Please retain this installation manual for future reference after reading it thoroughly INSTALLATION MANUAL AIR CONDITIONER MFL67705803 Rev 00_091718 ARWV100LAL4 www lg com Copyright 2013 2018 LG Electronics Inc All Rights Reserved ENGLISH MFL67705803 2018 9 17 오오 12 58 Page 1 ...

Page 2: ...ation 9 Installation space 10 Water control 11 Lifting method 13 Installation 14 Refrigerant piping installation 19 Device protection unit 22 Refrigerant piping system 23 Y branch pipe and header branch pipe type 37 Leakage test and vacuum 39 Electrical Wiring 41 Test Run 53 Maintenance 59 Cooling tower applied method 61 Caution For Refrigerant Leak 62 Water Solenoid Valve Control 64 MFL67705803 2...

Page 3: ...ic shock or fire may result Ask the dealer or an authorized technician to install the air conditioner Improper installation by the user may result in water leak age electric shock or fire Always ground the product There is risk of fire or electric shock Always install a dedicated circuit and breaker Improper wiring or installation may cause fire or electric shock For re installation of the install...

Page 4: ...en installing and moving the air condi tioner to another site do not charge it with a different refrigerant from the refrigerant specified on the unit If a different refrigerant or air is mixed with the original re frigerant the refrigerant cycle may malfunction and the unit may be damaged Do not reconstruct to change the settings of the protection devices If the pressure switch thermal switch or ...

Page 5: ...ar place provide sufficient protection against noise The inverter equipment private power generator high fre quency medical equipment or radio communication equip ment may cause the air conditioner to operate erroneously or fail to operate On the other hand the air conditioner may af fect such equipment by creating noise that disturbs medical treatment or image broadcasting Install the outdoor uni...

Page 6: ...gerous Do not touch the heat exchanger fins Doing so may cut your fingers When transporting the outside unit suspending it at the specified positions on the unit base Also support the outside unit at four points so that it cannot slip sideways Do not touch any of the refrigerant piping during and after operation It can cause a burn or frostbite Do not operate the air conditioner with the panels or...

Page 7: ...ho is to be responsible for switch settings Determination of division work The vacuum pump used must have a capacity of reaching at least 5 torr more than 1 hour Vacuum drying Recharge correctly as calculated in this manual and record the amount of added refrigerant Additional charge of refrigerant Make sure there are no gaps left between the facing materials used on the ceiling Fit facing panels ...

Page 8: ...e contact the HQ Outside Number Connection Capacity Single outside units 200 Double outside units 160 Triple outside units 130 System Capacity HP 10 20 30 Model Name Combination Unit ARWV100DAL4 ARWV200DAL4 ARWV300DAL4 Independent Unit ARWV100DAL4 ARWV100DAL4 ARWV100DAL4 ARWV100DAL4 ARWV100DAL4 ARWV100DAL4 Product Refrigerant Charge kg 2 0 2 0 2 0 2 0 2 0 2 0 Maximum Connection No of Indoor 16 25 ...

Page 9: ...ce well ventilated The refrigerant R410A has the property of higher operating pressure in comparison with R22 Therefore all materials have the characteristics of higher resisting pressure than R22 ones and this character istic should be also considered during the installation R410A is an azeotrope of R32 and R125 mixed at 50 50 so the ozone depletion potential ODP of R410A is 0 These days the deve...

Page 10: ...iew Top View Service area Service area Front Front Service area Front Space required for collective installation and continuous installation as shown below considering passage for air and people Service area Top view Unit mm 100 350 755 600 500 300 Product Outside unit Service area Front 200 350 755 Product Outside unit Service area Front 300 200 350 755 Product Outside unit Service area Front In ...

Page 11: ...l Otherwise it may cause the breakdown due to water pipe corrosion Refer to Standard Table for Water Purity Control In case the water temperature is above 40 C it is good to prevent the corrosion by adding the anticorrosive agent Install the pipe valve and gauge sensor in the space where it is easy to maintain Install the water valve in the low position for drain if required Be careful not to let ...

Page 12: ...air can be very effective 3 In case of using the closed type cooling tower the cooling water and supplementing water must satisfy the water qual ity criteria of closed type system in the table 4 Supplementing water and supplied water must be supplied with tap water industrial water and underground water ex cluding filtered water neutral water soft water etc 5 15 items in the table are general caus...

Page 13: ...nly one person carry product if it is more than 20kg PP bands are used to pack some products Do not use them as a means for transportation because they are dangerous Tear the plastic packaging bag and scrap it so that children cannot play with it Otherwise plastic packaging bag may suffocate children When carrying in outside unit be sure to support it at four points Carrying in and lifting with 3 ...

Page 14: ...in a personal injury Have installation work in order to protect against a strong wind and earthquake Any installation deficiency may cause unit to fall down resulting in a personal injury Especially take care for support strength of the floor surface water drain processing processing of water flown out from the outside unit during operation and paths of the pipe and wiring when mak ing a base supp...

Page 15: ...irmly hold copper tube in a bar or die as indicated di mension in the table above 4 Check Compare the flared work with figure below If flare is noted to be defective cut off the flared section and do flaring work again Main cause of gas leakage is defect in flaring work Carry out correct flaring work in the following procedure Pipe A Gas Liquid Gas Liquid 5 6 19 100 1 2 1 4 0 5 0 8 0 0 5 16 0 54 6...

Page 16: ...are shape Ø9 5 3270 3990 12 8 13 2 Ø12 7 4950 6030 16 2 16 6 Ø15 9 6180 7540 19 3 19 7 Installation Union CAUTION Always use a charge hose for service port connection After tightening the cap check that no refrigerant leaks are present When loosening a flare nut always use two wrenches in combination When connecting the piping always use a span ner and torque wrench in combination to tighten the f...

Page 17: ...torium theater lobby etc 2 When the location is air conditioned but the internal temperature humidity of the ceiling finishing is high Bathroom swimming pool locker room etc Building with roof ceiling of sandwich assembly type Note 3 General location When the pipe passes indoors where the indoor unit is not operated Hall way etc Dormitory school office tel Note 4 Negative condition When below cond...

Page 18: ...6 15 31 32 111 4 3 8 111 4 3 8 83 3 9 32 83 3 9 32 125 4 29 32 353 13 29 32 I D 34 9 1 3 8 I D 41 3 1 5 8 I D38 1 1 1 2 I D 41 3 1 5 8 O D 34 9 1 3 8 I D 28 58 1 1 8 I D34 9 1 3 8 I D 15 88 5 8 I D 19 05 3 4 I D 19 05 3 4 I D 12 7 1 2 I D 22 2 7 8 334 13 5 32 281 11 1 16 O D 19 05 3 4 I D 15 88 5 8 O D 12 7 1 2 I D 12 7 1 2 I D 6 35 1 4 X2 110 4 11 32 110 4 11 32 I D12 7 1 2 110 4 11 32 O D15 88 5...

Page 19: ...nerates a poisonous gas which can cause gas poisoning Never perform brazing in an unventilated room Always conduct an inspection for gas leakage after installation of the refrig erant piping has been completed Cautions in pipe connection valve operation Open status when both the pipe and the valve are in a straight line Do not cutting CLOSE OPEN Liquid pipe Gas pipe h Remove the front panel before...

Page 20: ...uge and temperature gauge at the inlet and outlet of the water pipe Flexible joints must be installed not to cause any leakage from the vibration of pipes Install a service port to clean the heat exchanger at the each end of the water inlet and outlet For the components of the water pipe system always use components above the designed water pressure 2 Water pipe connection The water pipe should be...

Page 21: ... 11 2 1120 4 400 45 4 5 155 15 5 31 8 1 1 4 14 5 1450 6 5 650 87 5 8 75 265 26 5 38 1 1 1 2 16 5 1 7 9 5 0 95 155 16 350 35 5 50 8 2 21 5 2 2 13 5 1 4 255 26 600 61 Pipe thickness Shear stress Tensile stress Bending moment Torque Water pipe connection Water pipe inlet Water pipe outlet Refrigerant piping installation MFL67705803 2018 9 17 오오 12 58 Page 21 ...

Page 22: ... and check the direc tion of the heat water flow before the installation Picture 1 When connecting the flow switch to the product remove the jump wire to connect to the communication terminal 5 A and 5 B of the outside unit control box Picture 2 3 Open the cover of the flow switch and check the wiring diagram before connecting the wires The wiring method can differ by the manufacturer of the flow ...

Page 23: ...150m 200 m Conditional application IDU direction Series outside unit system Example 5 Indoor Units connected Ⓐ Outside Unit Ⓑ 1st branch Ⓒ Y branch Ⓓ Indoor Unit Ⓔ Header branch Ⓕ Pinch off Ⓖ Outside branch 1st Ⓗ Outside branch 2nd Single outside unit system Example 5 Indoor Units connected Ⓐ Outside Unit Ⓑ 1st branch Ⓒ Y branch Ⓓ Indoor Unit Ⓔ Header branch Ⓕ Pinch off If it is conditionally inst...

Page 24: ...ader branch Ⓕ Pinch off Series outside unit system Example 6 Indoor Units connected Ⓐ Outside Unit Ⓑ 1st branch Ⓒ Y branch Ⓓ Indoor Unit Ⓔ Header branch Ⓕ Pinch off Ⓖ Outside branch 1st Ⓗ Outside branch 2nd 10m or less H 50m L 150m 40m ODU Capacity Master Slave1 Slave2 40m H G Slave2 Slave1 Master L 150m 40m H 50 m 40m D D D D D D F E MFL67705803 2018 9 17 오오 12 58 Page 24 ...

Page 25: ...cted Ⓐ Outside Unit Ⓑ 1st branch Ⓒ Y branch Ⓓ Indoor Unit Ⓔ Header branch Ⓕ Pinch off Ⓖ Outside branch 1st Ⓗ Outside branch 2nd 10m or less H 50m Slave2 Slave1 Master L150m 200m Conditional application 40m 90m Conditional application ODU Capacity Master Slave1 Slave2 40m H G L 150m 200m Conditional application 40m 90m Conditional application H 50m 40m If it is conditionally installed refer to tabl...

Page 26: ... Ø 19 05 33 0 Ø 9 52 Ø 22 2 47 0 Ø 12 7 Ø 28 58 71 0 Ø 15 88 Ø 28 58 104 0 Ø 19 05 Ø 34 9 174 0 Ø 19 05 Ø 41 3 Ú Total pipe length limited Classification Section Type Y branch Y header branch Header branch Maximum permitted length Outdoor unit indoor unit Maximum pipe length L A B C D e 150 m Conditionally 200 m A B b 150 m A C e 150 m Conditionally 200m A f 150 m Corresponding pipe length 175 m C...

Page 27: ...g the installation of Maximum pipe length 90m after the 1st branch Ú Refrigerant pipe diameter from outside unit to first branch A E F If the step up size is not available you can not select the next higher size available Upward Outside unit total capacity Standard Pipe Diameter Increased Pipe Diameter When pipe length is 90m or more from ODU to 1st branch kW Liquid pipe mm inch Gas pipe mm inch L...

Page 28: ...tside units is 2m or below and if the location of the main pipe is lower than that of the outside unit and if the location of the main pipe is lower than that of the outside unit the oil trap does not have to be applied If the location of the main pipe is higher than the location of the outside unit be careful since the oil can be accumu lated in the stopped outside unit If there is high low diffe...

Page 29: ...r unit Example 1 Example 2 Example 3 Examples of Wrong Pipe Connections If outside units are located at different level oil trap must be installed after each Y branch Oil trap should be located at same level of Y branch Heat Pump High Pressure Vapor Heat Recovery High Pressure Vapor Low Pressure Vapor Level Level Level Level If pipe is higher than outside unit oil trap must be installed after each...

Page 30: ...ample 1 Toward indoor unit Toward indoor unit h Toward indoor unit Example 2 Apply Oil Trap as shown below when the length of the pipe between the outside units is more than 2m Otherwise the unit may not operate properly Toward indoor unit Toward indoor unit 2 m 6 6 ft or less 2 m 6 6 ft or less 2 m 6 6 ft or longer 0 2 m 0 66 ft or longer Oil Trap Example 2 Example 1 MFL67705803 2018 9 17 오오 12 5...

Page 31: ...Ø15 88mm Total liquid pipe m Ø12 7mm Total liquid pipe m Ø9 52mm Total liquid pipe m Ø6 35mm CF kg Correction Factor Total amount kg If a negative result is obtained from the calculation no refrigerant needs to be added A A B B CAUTION Outside unit Header branch Indoor unit Ex 10HP Additional Charge A x 0 061 B x 0 061 C x 0 061 D x 0 061 E x 0 022 CF 50 x 0 061 10 x 0 061 10 x 0 061 10 x 0 061 10...

Page 32: ...nflow type or exhaust type External air inflow type is recommended due to the characteristics of the refrigerant Always operate the ventilation system irrelevant from whether the air conditioner is used or not and whether the indoor or not When it is impossible to operate this and in case of a refrigerant leakage by the sensor the ventilation system is automatically operated Limitation in piping w...

Page 33: ...o connect the piping 6 Always observe the restrictions on the refrigerant piping such as rated length difference in height and piping diame ter Failure to do so can result in equipment failure or a decline in heating cooling performance 7 A second branch cannot be made after a header These are shown by 8 The Multi V will stop due to an abnormality like excessive or insufficient refrigerant At such...

Page 34: ...ation on the joint mounting configuration If the diameter of the refrigerant piping selected by the procedures described is different from the size of the joint the connecting section should be cut with a pipe cutter Branch pipe should be insulated with the insulator in each kit When the number of pipes to be connected is smaller than the number of header branches in stall a cap to the unconnected...

Page 35: ...kit Joints between branch and pipe should be sealed with the tape included in each kit Any cap pipe should be insulated using the insulator provided with each kit and then taped as described above B Pinched pipe Horizontal plane View from point B in the direction of the arrow Insulate the header using the insulation material attached to the branch pipe kit as shown in the figure Insulator Insulato...

Page 36: ...l with a finishing tape Power lines E D D B A C Be sure to give insulation work to refrigerant piping by covering liquid pipe and gas pipe separately with enough thickness heat resistant polyethylene so that no gap is observed in the joint between indoor unit and insulating material and insulating materials themselves When insulation work is insufficient there is a possibility of con densation dri...

Page 37: ...7 332 321 74 ARBLN07121 376 404 96 I D34 9 O D31 8 I D22 2 O D22 2 I D28 58 I D31 8 O D19 05 I D28 58 120 90 120 I D31 8 2 2 2 D I 58 8 2 D I I D19 05 I D15 88 I D12 7 I D19 05 I D15 88 2 3 1 2 1 3 2 5 9 D I 2 5 9 D I 7 2 1 D O I D15 88 I D19 05 I D12 7 I D12 7 I D19 05 I D15 88 I D12 7 I D19 05 O D12 7 I D6 35 I D15 88 371 394 83 110 70 2 3 3 2 ARBLN14521 471 517 125 120 130 I D19 05 I D15 88 I D...

Page 38: ...0 150 360 ID9 52 ID9 52 ID6 35 ID6 35 ID9 52 ID12 7 120 150 120 ID15 88 ID12 7 ID15 88 ID12 7 ID15 88 ID19 05 120 150 120 ID6 35 ID9 52 ID9 52 ID12 7 120 150 160 580 ID19 05 ID15 88 ID15 88 ID12 7 ID22 2 ID28 58 ID25 4 120 150 700 120 ID6 35 ID9 52 ID9 52 ID6 35 ID9 52 ID12 7 120 150 160 760 ID19 05 ID15 88 ID15 88 ID12 7 ID22 2 ID28 58 ID25 4 120 150 120 720 ID6 35 ID9 52 ID9 52 ID6 35 ID12 7 ID9...

Page 39: ...s pressurization Note If the ambient temperature differs between the time when pressure is applied and when the pressure drop is checked apply the following correction factor There is a pressure change of approximately 0 1 kg cm2 0 01 MPa for each 1 C of temperature difference Correction Temp at the time of pressurization Temp at the time of check X 0 01 For example Temperature at the time of pres...

Page 40: ...essure to the system to 0 05MPa vacuum break with nitrogen gas and then evacuate it again with the vacuum pump for 1hr to 100 7kPa vacuum drying If the system cannot be evacuated to 100 7kPa within 2 hrs repeat the steps of vacuum break and its drying Finally check if the vacuum gauge does not rise or not after maintaining the system in vacuum for 1 hr Scale Use a graviometer One that can measure ...

Page 41: ...elated to electrical equipment wiring regulations and guidance of each electric power company 2 Install the outside unit transmission line away from the power source wiring so that it may not affected by elec tric noise from the power source Do not run it through the same conduit 3 Be sure to provide designated grounding work to outside unit 4 Give some allowance to wiring for electrical part box ...

Page 42: ...nel Connect the transmission wire between outside unit and indoor unit the connection between outside unit and central controller system pass through the sub PCB for central control When connecting indoor unit with the shield cable ground at the grounding screw When connecting central controller with the shield cable ground at the grounding screw Refer to next page about the distance between main ...

Page 43: ...excess of 100m the figures will have to be recalculated in direct proportion to the additional length of line involved 2 If the power supply waveform continues to exhibit some distortion the recommended spacing in the table should be increased If the lines are laid inside conduits then the following point must also be taken into account when grouping various lines together for introduction into th...

Page 44: ...z 380 415 V 60Hz 380 V Single phase 60Hz 220V Breaker 3phase 4lines power cable Transmission cable 3lines wired remote controller Single phase 60Hz 220V Transmission cable 2lines Shield cable Indoor Outside unit Never install individual switch or individual outlet to cut the power connecting the indoor unit CAUTION MFL67705803 2018 9 17 오오 12 58 Page 44 ...

Page 45: ... Master Outside unit Master Outside Unit 3 A 4 B SODU B SODU A IDU B IDU A INT B INT A 3 A 4 B 3 A 4 B Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage Communication disorder by noise effect and motor current leakage Don t install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply Install...

Page 46: ... to disconnect each of indoor unit separately from the power supply Install a main electrical protection to interrupt power to all equipment of the system because this system consists of the equipment utilizing the multiple power sources If there exists the possibility of reversed phase lose phase momentary blackout or the power goes on and off while the product is operating attach a reversed phas...

Page 47: ... type Connection of communication cable must be installed like below figure between indoor unit to outside unit STAR type Abnormal operation can be caused by communication defect when connection of communication cable is installed like below figure STAR type MFL67705803 2018 9 17 오오 12 58 Page 47 ...

Page 48: ...nge the set value Blank Save in EEPROM Target pressure ad justing OFF op1 op3 Selected the option Change the set value Blank Save in EEPROM Use Sump Heater OFF ON Selected the option Change the set value Blank Save in EEPROM IDU capacity adjusting OFF ON Selected the option Change the set value Blank Save in EEPROM Functions save in EEPROM will be kept continuously though the system power was rese...

Page 49: ...g the power This number represents the setting condition Master model capacity Slave1 model capacity Slave2 model capacity Slave3 model capacity Total capacity System type Power type Product type Example 178 kW 62HP 4Unit R410A combination Cooling heating switching type 380V general type 16 16 16 14 62 2 38 1 EX Details of each symbol Model capacity Symbol Number Contents 8 20 Master model capacit...

Page 50: ... completing addressing address of each indoor unit is indicated on the wired remote controller display window CH01 CH02 CH03 CH06 Indicated as number of indoor unit connection set MAIN PCB DIP SWITCH 7 Segment SW01C conﬁrm SW02C ඔ backward SW03C ඖ forward SW04C cancel SW01D reset When replacing the indoor unit PCB you must execute the auto addressing again Always execute this with all the power of...

Page 51: ...It is not an error message will disappeared when on off button is pressed on remote control ex Display of 01 02 15 means connection of 15 indoor units and Automatic addressing is completed normally Automatic addressing start Waiting 3 minutes Power On Press RED Button for 5 sec SW01C 7 segment LED 88 Don t press RED Button SW01C Waiting about 2 7 minutes 7 segment LED OK YES NO Check the connectio...

Page 52: ...ain PCB Dip SW of Master Outside Unit In case of no Cool Heat Selector connect signal terminal block as below figure And description Connect signal terminal block as below figure and description How to set mode without Cool Heat Selector Cooling Mode Setting GND Connection Off Open Heating Mode Setting GND Connection GND Connection Fan Mode Setting Off Open GND Connection Mode Change Push Button H...

Page 53: ...ystem to clean any alien particles inside the pipes and execute an air purge to remove an air within the pipes to make the water supply smoother Clean all the strainers of water pipe including around outside units Execute the test of water supply system without operating the product Check whether outside unit inlet outlet flow rate complies to the product specification Standard Water volume is 96L...

Page 54: ...essor and let the refrigerant including the oil inside the compressor to evaporate Then the insulation resistance value will increase to more than 2 0 MΩ Check whether the liquid and gas pipes are open Precaution when blocking the water cooling type Multi V main power While using the product Air conditioning season Heating season always connect the main power of the outside unit During the test ru...

Page 55: ... or flow rate is insufficient Water not supplied or flow rate is insufficient During Cooling CH32 CH34 When connecting the flow switch water doesn t flow or the amount of its flow lacks due to the checked error related to water CH24 Daily check management Flow rate control Check whether the strainer is clogged or whether the pipe is filled with air and then check the temperature and pressure dif f...

Page 56: ...e connecting part of the water pipes prior to cleaning so that the chemical detergent does not leak After sufficiently mixing the chemical detergent with water start cleaning Cleaning the heat exchanger is easier at the initial stage and becomes difficult after the scaling has accumulated In areas where the water quality is poor cleaning is required periodically Because chemical detergent has stro...

Page 57: ...nput Over Current RMS of Master outside Unit Master Outside Unit Inverter Board Input Current excess RMS 2 3 Master outside unit inverter compressor DC link under voltage DC voltage is not charged after master outside unit operating relay is turned on 2 4 Master outside unit high pressure switch Compressor maintenance by master outside unit high pressure switch Flow rate insufficiency or flow swit...

Page 58: ...e sensor error Master outside unit suction temperature sensor disconnection or short circuit 4 9 Master outside unit IGBT temperature sensor error Master out side unit IGBT temperature sensor disconnection or short circuit 5 0 Master outside unit 3 phase power missing Master outside unit power line phase missing 5 1 Over capacity Indoor unit capacity sum is exces sive connection Excessive connecti...

Page 59: ...ution in the case And close the upper plate 5 Circulation washing for 30 minutes using a circulation pump After repeat 3 or 4 times this operation discharge the solution through the drain pipe 6 4 5 in the same way circulation cleaning 3 4 times with clean water once every 30 minutes And discharge the water through the drain pipe 7 Finally In order to neutralize the acidic conditions of the coil a...

Page 60: ...eous solution through the drain pipe 3 Using the Socket Wrench divide the case and bolt fixed on the lower plate of SCHEX 4 Scrub the Coil to the direction from row 4 to row 1 with size Ø 6 8 mm brush 5 Spray the Water to the horizontal direction for washing of the entire coil 6 Assemble the case of SCHEX with Socket Wrench 7 Open the upper plate then circulates the water intermixed with NaOH disc...

Page 61: ...ng tower Middle heat exchanger Heat source water of the cooling tower is supplied directly to the outside unit system Closed type cooling tower Open type cooling tower Closed type cooling tower 1st side 2nd side Heat exchange CAUTION When the open type cooling tower is used and the water supply is directly connected to the 2nd heat exchanger product damage by alien particle cannot be repaired for ...

Page 62: ...ncentration Limiting concentration is the limit of Freon gas concentration where immediate measures can be taken with out hurting human body when refrigerant leaks in the air The limiting concentration shall be described in the unit of kg m3 Freon gas weight per unit air volume for facilitating calculation Limiting concentration 0 44kg m3 R410A Amount of additional replenished refrigerant Total am...

Page 63: ...entilator Reducing the outside refrigerant qty Pay a special attention to the place such as a basement etc where refrigerant can stay since refrigerant is heavier than air Outside unit Indoor unit Smallest room R410A Refrigerant concentration kg m3 Total amount of replenished refrigerant in refrigerant facility kg Capacity of smallest room where indoor unit is installed m3 In case the result of ca...

Page 64: ...l for water solenoid valve control CN_18 220 V Out CN_22 to DDC 1 L 2 N 3 L 4 N Main PCB Water In BMS Building Management System Water Out Solenoid Valve CN_18 220 V Out CN_22 to DDC PI 485 DDC BMS 1 L 2 N 3 L 4 N Main PCB Water Solenoid Valve Control Central Control Use DDC Port Individual Control Use 220V Output Port MFL67705803 2018 9 17 오오 12 58 Page 64 ...

Page 65: ...MFL67705803 2018 9 17 오오 12 58 Page 800 ...

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