INSTALLATION MANUAL
Contents
1. 1 o N x Installation manual 9 DAIKIN ERHQ011 016AAV3 Outdoor unit for air to water heat pump 4PW37976 1D PUMP DOWN OPERATION This unit is equipped with an automatic pump down operation which will collect all refrigerant from the field piping and indoor unit in the outdoor unit To protect the environment make sure to perform the following pump down operation when relocating or disposing of the unit A The outdoor unit is equipped with a low pressure switch or a low pressure sensor to protect the compressor by switching it off Never short circuit the low pressure switch during pump down operation Turn on the main power supply switch Make sure the liquid stop valve and the gas stop valve are open see Stop valve operation on page 6 Press the pump down button BS4 on the PCB of the outdoor unit for at least 8 seconds The compressor and outdoor unit fan will automatically start operating Once operation stops after 3 to 5 minutes close the liquid stop valve and the gas stop valve The pump down operation is now finished The remote controller may display U4 and the indoor pump may continue operating for about 30 seconds This is not a malfunction Even when the ON button on the remote controller is pressed the unit will not start to operate To restart operation of the unit turn off the main power supply switch and turn it on again Turn off the main pow2. Pressure sensor high Service monitor orange 1 Pressure switch high Magnetic relay Y1S Magnetic relay E1HC Signal transmission circuit Power module Magnetic relay Diode module Reactor Insulated gate bipolar transistor Motor compressor Connector option Motor fan upper Terminal strip Motor fan lower Expansion valve Switching power supply 4 way valve Earth leakage circuit breaker field supply 21 73 Noise filter Resistor ZAF ZAF Noise filter Thermistor air Installation manual DAIKIN ERHQ011 016AAV3 1 3 Outdoor unit for air to water heat pump 4PW37976 1D 4PW37976 1 D 0000000 Copyright Daikin DAIKIN EUROPE N V Zandvoordestraat 300 B 8400 Oostende Belgium 4PW37976 1D
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6. A Discharge side B Bottom view mm C Drain hole Drain work If drain work is necessary follow the guidelines below Drain kits for drainage are available as option B f drain work from the outdoor unit causes trouble for example if the drain water may splash on people provide the drain piping using a drain socket optional B fin cold areas the use of a drain hose is unavoidable for one reason or another it is recommended to install the optional bottom plate heater tape B Make sure the drain works properly NOTE If drain holes of the outdoor unit are covered by a mounting base or by floor surface raise the unit in order to provide a free space of more than 100 mm under the outdoor unit 2100 mm Installation method for prevention of falling over If it is necessary to prevent the unit from falling over install as shown in the figure prepare all 4 wires as indicated in the drawing B unscrew the top plate at the 4 locations indicated A and B putthe screws through the nooses and screw them back tight A location of the 2 fixation holes on the front side of the unit B location of the 2 fixation holes on the rear side of the unit C wires field supply INSTALLATION SERVICING SPACE The numerical figures used in the figures represent the dimensions in mm Refer to Precautions on installation on page 4 Precaution A In case of non stacked installation S
7. 150 mm m sure to provide for adequate measures in order 5 Ifyou install the unit on a frame please install a waterproof plate to prevent that the outdoor unit be used as a shelter within 150 mm of the underside of the unit in order to prevent the by small animals invasion of water from the lower direction Small animals making contact with electrical parts can cause malfunctions smoke or fire Please instruct the 6 When installing the unit in a place frequently exposed to snow customer to keep the area around the unit clean pay special attention to the following 4 h he followi diti Elevate the foundation as high as possible di di he arg Remove the rear suction grille to prevent snow from satisfied and that meets with your customer s approval accumulating on the rear fins Places which are well ventilated Places where the unit does not bother next door neighbours 7 If you install the unit on a building frame Safe places which can withstand the unit s weight and please install a waterproof plate within vibration and where the unit can be installed level 150 mm of the underside of the unit or Places where there is no possibility of flammable gas or use a drain kit option in order to avoid the product leak drainwater dripping See figure Places where servicing space can be well ensured a DAIKIN Installation manual 3 ERHQ011 016AAV3 Outdoor unit for air to w
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10. Q011 016AAV3 Outdoor unit for air to water heat pump 4PW37976 1D DAIKIN Installation manual 8 CHARGING REFRIGERANT Important information regarding the refrigerant used This product contains fluorinated greenhouse gases covered by the Kyoto Protocol Do not vent gases into the atmosphere Refrigerant type R410A GWP value 1975 1 GWP global warming potential Please fill in with indelible ink the factory refrigerant charge of the product the additional refrigerant amount charged in the field and B 0 0 the total refrigerant charge on the refrigerant charge label supplied with the product The filled out label must be adhered in the proximity of the product charging port e g onto the inside of the service cover Contains fluorinated greenhouse gases covered by the Kyoto Protocol L4 1 Factory refrige rant charge of the product RA0A kol see unit name plate 2 Additional refrigerant amount charged in the k ii field IT L 731 3 Total refrigerant charge 2 4 Contains fluorinated 6 5 greenhouse gases covered by the Kyoto Protocol Outdoor unit Refrigerant cylinder and manifold for charging Precautions and general guidelines A m When servicing the unit requires the refrigerant system to be opened treatment and evacuation of refrigerant must be done in accordance with relevant
11. UCTIONS CAREFULLY BEFORE INSTALLATION KEEP THIS MANUAL IN A HANDY PLACE FOR FUTURE REFERENCE IMPROPER INSTALLATION OR ATTACHMENT OF EQUIPMENT OR ACCESSORIES COULD RESULT IN ELECTRIC SHOCK SHORT CIRCUIT LEAKS FIRE OR OTHER DAMAGE TO THE EQUIPMENT BE SURE ONLY TO USE ACCESSORIES MADE BY DAIKIN WHICH ARE SPECIFICALLY DESIGNED FOR USE WITH THE EQUIPMENT AND HAVE THEM INSTALLED BY A PROFESSIONAL IF UNSURE OF INSTALLATION PROCEDURES OR USE ALWAYS CONTACT YOUR DAIKIN DEALER FOR ADVICE AND INFORMATION SAFETY CONSIDERATIONS The precautions listed here are divided into the following two types Both cover very important topics so be sure to follow them carefully WARNING CAUTION If the warning is not observed it may cause serious casualties If the caution is not observed it may cause injury or damage to the equipment WARNING For use of air conditioning units in applications with temperature alarm settings it is advised to foresee a delay of 10 minutes for signalling the alarm in case the alarm temperature is exceeded The air conditioning unit may stop for several minutes during normal operation for defrosting of the indoor unit or when in thermostat stop operation Ask your dealer or qualified personnel to carry out installation work Do not install the machine by yourself Improper installation may result in water leakage electric shocks or fire Perform installation work in accordance with this in
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13. air to water heat pump 4PW37976 1D DISPOSAL REQUIREMENTS NOTES Dismantling of the unit treatment of the refrigerant of oil and of other parts must be done in accordance with relevant local and national legislation ERHQ011 016AAV3 DAIKIN Outdoor unit for air to water heat pump 4PW37976 1D Installation manual WIRING DIAGRAM Wire clamp BLK Black RED Red Terminal strip GRN Green WHT White 55 Connector BRN Brown YLW Yellow Gn Relay connector BLU Blue EEE Field wiring ORG Orange NOTE 1 This wiring diagram only applies to the outdoor unit NOTE 4 Refer to the option manual for connecting wiring to X6A NOTE 5 Refer to the wiring diagram sticker on back of front panel on how to use BS1 BS4 and 051 switch NOTE 6 Do not operate the unit by short circuiting protection device S1PH NOTE 8 Confirm the method of setting the selector switches DS1 by service manual Factory setting of all switches OFF Printed circuit board R3T neen Thermistor suction pipe Push button switch Thermistor heat exchanger Capacitor Thermistor heat exchanger middle EE DIP switch Thermistor liquid Crankcase heater Thermistor fin PEE Fuse RC Signal receiver circuit Service monitor green S1NPH
14. ant leaks after tightening the stem cap Cautions on handling the service port B Always use a charge hose equipped with a valve depressor pin since the service port is a Schrader type valve EB After handling the service port make sure to tighten the service port cap securely For the tightening torque refer to the table below EB Check for refrigerant leaks after tightening the service port cap Tightening torques Item Tightening torque N m Stem cap liquid side 13 5 16 5 Stem cap gas side 22 5 27 5 Service port cap 11 5 13 9 REFRIGERANT PIPING m Field pipes can be installed in four directions Figure Field pipes in four directions 1 2 3 4 5 6 7 8 9 Drill Centre area around knockout hole Knockout hole Slit Connecting pipe Bottom frame Front plate Pipe outlet plate Screw front plate Pipe outlet plate screw Forward Backward Sideways Downward B Cutting out the two slits makes it possible to install as shown in the figure Field pipes in four directions Use a metal saw to cut out the slits B To install the connecting pipe to the unit in a downward direction make a knockout hole by penetrating the centre area around the knockout hole using a 96 mm drill See figure Field pipes in four directions After knocking out the knock out it is recommended to apply repair paint to the edge and the surrounding end surfaces to preve
15. ater heat pump 4PW37976 1D Selecting a location in cold climates A CAUTION When operating the outdoor unit in a low outdoor ambient temperature be sure to follow the instructions described below EB prevent exposure to wind install the outdoor unit with its suction side facing the wall Never install the outdoor unit at a site where the suction side may be exposed directly to wind B prevent exposure to wind install a baffle plate on the air discharge side of the outdoor unit B In heavy snowfall areas it is very important to select an installation site where the snow will not affect the unit If lateral snowfall is possible make sure that the heat exchanger coil is not affected by the snow if necessary construct a lateral canopy 1 Construct a large canopy 2 Construct a pedestal Install the unit high enough off the ground to prevent burying in snow PRECAUTIONS ON INSTALLATION Check the strength and level of the installation ground so that the unit will not cause any operating vibration or noise after installation B In accordance with the foundation drawing in the figure fix the unit securely by means of the foundation bolts Prepare four sets of M12 foundation bolts nuts and washers each which are available on the market It is best to screw in the foundation bolts until their length are 20 mm from the foundation surface 345 355
16. by applying a bubble test solution to all piping connections Make sure to use a recommended bubble test solution from your wholesaler Do not use soap water which may cause cracking of flare nuts soap water may contain salt which absorbs moisture that will freeze when the piping gets cold and or lead to corrosion of flared joints soap water may contain ammonia which causes a corrosive effect between the brass flare nut and the copper flare 2 3 Discharge all nitrogen gas uum drying To remove all moisture from the system proceed as follows 1 Evacuate the system for at least 2 hours to a target vacuum of 100 7 kPa Check that with the vacuum pump turned off the target vacuum is maintained for at least 1 hour Should you fail to reach the target vacuum within 2 hours or maintain the vacuum for 1 hour the system may contain too much moisture In that case break the vacuum by pressurizing with nitrogen gas to a gauge pressure of 0 05 MPa 0 5 bar and repeat steps 1 to 3 until all moisture has been removed The stop valves can now be opened and or additional refrigerant can be charged see Charging refrigerant on page 9 After opening the stop valve it is possible that the pressure in the refrigerant piping does not rise This might be caused by e g the closed state of the expansion valve in the outdoor unit circuit but does not present any problem for correct operation of the unit ERH
17. cessories Deterioration of the operational capacity Frequent frost acceleration in heating operation 1 Accessories Disruption of operation due to rise of high pressure When a strong wind blows continuously on the face of the unit the fan can start rotating very fast until it breaks Refer to the figures for installation of this unit in a place where the wind direction can be foreseen Turn the air outlet side toward the building s wall fence or screen Optional accessories for the outdoor unit A o bottom plate heater tape is available as optional kit p For installation of the bottom plate heater tape kit refer to the instruction sheet delivered with that kit Drain socket Make sure there is enough room to do the installation Handling Set the outlet side at a right angle to the direction of the wind As shown in the figure below slowly move the unit by grabbing the left and right grips Position your hands on the corner instead of Strong wind grabbing the air inlet to avoid deforming the casing EN A Blown air C Strong wind To avoid injury do not touch the air inlet or aluminium fins of the unit 3 Prepare a water drainage channel around the foundation to drain waste water from around the unit 4 Ifthe water drainage of the unit is not easy please build up the SELECTING INSTALLATION SITE unit on a foundation of concrete blocks etc the height of the foundation should be maximum
18. e down position Calculating the additional refrigerant charge Piping length is the one way length of gas or liquid piping whichever is the longest It is not necessary to charge additionally if the piping length is under 30 m However if the piping length is under 5 m a complete recharging of the unit is required Refer to Complete recharging on page 9 If the piping length is over 30 m please determine the additional amount of refrigerant to be charged using the table below Table 1 Additional charging of refrigerant unit kg Refrigerant piping length D 10 1 1 1 5 1 0 1 5 m o a Recharge required refer to Complete recharging on page 9 b Additional charge not required Complete recharging Before recharging make sure to execute vacuum drying of the internal piping of the unit as well To do so use the internal service port of the unit Do NOT use the service ports located on the stop valve see Stop valve operation on page 6 since vacuum drying can not be performed properly from these ports Outdoor units have 1 port on the piping It is between the heat exchanger and the 4 way valve In case complete recharging is required after a leak etc refer to the table below to determine the necessary amount of refrigerant Table 2 Total charging amount lt unit kg gt Refrigerant piping length
19. ee figure 1 4 Suction side obstacle 1 In these cases close the bottom of the installation frame to prevent the discharged air from being bypassed Obstacle is present Discharge side obstacle Left side obstacle Right side obstacle 2 In these cases only 2 units can be installed This situation is not allowed Top side obstacle ERHQ011 016AAV3 Outdoor unit for air to water heat pump 4PW37976 1D DAIKIN Installation manual 4 In case of stacked installation 1 case obstacles exist in front of the outlet side 2 Do not stack more than one unit About 100 mm is required as the dimension for laying the upper outdoor unit s drain pipe Get the portion A sealed so that air from the outlet does not bypass C In case of multiple row installation for roof top use etc 1 Incase of installing one unit row 2 n case of installing multiple units 2 units or more in lateral connection per row Relation of dimensions of H A and L are shown in the table below L A O lt Ls1 2H 250 LsH 1 2H lt L 300 H L Installation impossible REFRIGERANT PIPE SIZE AND ALLOWABLE PIPE LENGTH All field piping must be installed by a licensed refrigeration technician and must comply with relevant local and national regulations To persons in charge of piping work Wi Be sure to open the stop valve after piping installing and vacum
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21. er supply switch Make sure to re open both stop valves before restarting operation of the unit ELECTRICAL WIRING WORK A All wiring must be performed by authorized electrician All components procured on the site and all electric construction should comply with the applicable local and national codes B High voltage To avoid electrical shock make sure to disconnect the power supply 1 minute or more before servicing the electrical parts Even after 1 minute always measure the voltage at the terminals of main circuit capacitors or electrical parts and before touching make sure that those voltages are 50 V DC or less To persons in charge of electrical wiring work Do not operate the unit until the refrigerant piping is complete Running it before the piping is ready will break the compressor Precautions on electrical wiring work Before obtaining access to terminal devices all supply circuits must be interrupted Use only copper wires The wiring between the indoor unit and outdoor unit must be for 230 V A main switch or other means for disconnection having a contact separation in all poles must be incorporated in the fixed wiring in accordance with relevant local and national legislation Do not turn on the main switch until all the wiring is completed Never squeeze bundled cables into a unit Fix cables so that cables do not make contact with the pipes especially on high pre
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23. h is very resistant dk Any exposed piping may cause condensation or burns if touched N c i e 1 Compressor Terminal cover Indoor and outdoor field piping Corking etc Insulation material Bolts Be careful with pipe bolt and outer panel connections BS poo Cautions for necessity of a trap Since there is fear of the oil held inside the riser piping flowing back into the compressor when stopped and causing liquid compression phenomenon or cases of deterioration of oil return it will be necessary to provide a trap at an appropriate place in the riser gas piping Trap installation spacing See figure 4 Outdoor unit Indoor unit Gas piping Liquid piping Oiltrap gt Install trap at each difference in height of 10 m A trap is not necessary when the outdoor unit is installed in a higher position than the indoor unit LEAK TEST AND VACUUM DRYING When all piping work is complete and the outdoor unit is connected to the indoor unit it is necessary to a check for any leakages in the refrigerant piping and b to perform vacuum drying to remove all moisture in the refrigerant piping If there is a possibility of moisture being present in the refrigerant piping for example rainwater may have entered the piping first carry out the vacuum drying procedure bel
24. ing is complete Running the system with the valve closed may break the compressor B It is forbidden to discharge refrigerant into the atmosphere Collect the refrigerant accordance with the freon collection and destruction law Selection of piping material B Construction material phosphoric acid deoxidised seamless copper for refrigerant m Temper grade use piping with temper grade in function of the pipe diameter as listed in table below The pipe thickness of the refrigerant piping should comply with relevant local and national regulations The minimal pipe thickness for R410A piping must be in accordance with the table below Temper grade Pipe of piping material Minimal thickness t mm 9 5 0 80 15 9 1 00 O Annealed Refrigerant pipe size The pipes between outdoor unit and indoor unit should have the same size as the outdoor connections Refrigerant pipe size mm Gas pipe 15 9 Liquid pipe 09 5 Allowable pipe length and height difference See the table below concerning lengths and heights Refer to figure 2 Assume that the longest line in the figure corresponds with the actual longest pipe and the highest unit in the figure corresponds with the actual highest unit Allowable pipe length Maximum total one way piping length 75 m 95 m Maximum height between indoor and outdoor Chargeless length L lt 30 m a Parenthesized figure represents the equivalent le
25. iring make certain that prescribed wires are used carry out complete connections and fix the wires so that outside forces are not applied to the terminals Specifications of standard wiring components ERHQ011 016AAV3 Minimum circuit amps 8 28 2 Recommended field fuse 32A Wire type HO5VV U3G Size Wiring size must comply with the applicable local and national code Wire type of wiring between the units HO5VV U4G2 5 a Stated values are maximum values see electrical data of combination with indoor unit for exact values b Only in protected pipes use HO7RN F when protected pipes are not used NOTE The earth leakage circuit breaker must be a high speed type breaker of 30 mA 0 1 5 Equipment complying with EN IEC 61000 3 12 7 TEST OPERATION WARNING Live parts can be easily touched by accident Never leave the unit unattended during installation or servicing when the service panel is removed NOTE Note that during the first running period of the unit required power input may be higher than stated on the m nameplate of the unit This phenomenon originates from the compressor that needs elapse of a 50 hours run in period before reaching smooth operation and stable power consumption Pre run checks Electrical wiring Mm 5 the wiring as mentioned on the wiring diagram Inter unit wiring Make sure no wiring has been forgotten and that Earth wi
26. iring between the indoor and outdoor units and wiring the power supply form the wires so that the frontside panel can be securely fastened If the frontside panel is not in place overheat of the terminals electric shocks or a fire may be caused If refrigerant gas leaks during installation work ventilate the area immediately Toxic gas may be produced if refrigerant gas comes into contact with fire After completing the installation work check to make sure that there is no leakage of refrigerant gas Toxic gas may be produced if refrigerant gas leaks into the room and comes into contact with a source of fire such as a fan heater stove or cooker Installation manual DAIKIN ERHQ011 016AAV3 Outdoor unit for air to water heat pump 4PW37976 1D WARNING Before touching electric terminal parts turn off power switch CAUTION Do not install the unit in places such as the following B Where there is mist of mineral oil oil spray or B Live parts can be easily touched by accident vapour for example a kitchen Never leave the unit unattended during installation or Plastic parts may deteriorate and cause them to servicing when the service panel is removed fall out or water to leak m When planning to relocate former installed units you Where corrosive gas such as sulphurous acid must first recover the refrigerant after the pump down gas is produced operation Refer to chapter Pump d
27. local and national legislation B Refrigerant can not be charged until field wiring has been completed B Refrigerant may only be charged after performing the leak test and vacuum drying see Leak test and vacuum drying on page 8 m When charging a system care shall be taken that its maximum permissible charge is never exceeded in view of the danger of liquid hammer B Charging with an unsuitable substance may cause explosions and accidents so always ensure that the appropriate refrigerant R410A is charged B Refrigerant cylinders shall be opened slowly EB Always use protective gloves and protect your eyes when charging refrigerant B When the power is on please close the front panel when leaving the unit unattended This unit requires additional charging of refrigerant according to the length of refrigerant piping connected at the site B Make sure to charge the refrigerant in liquid state to the liquid pipe Since R410A is a mixed refrigerant its composition changes if charged in its gaseous state and normal system operation would then no longer be assured m Before charging check whether the refrigerant cylinder has a syphon attached or not and position the cylinder accordingly Filling using a cylinder with a siphon attached Charge the liquid refrigerant with the cylinder in upright position Filling using a cylinder without a siphon attached Charge the liquid refrigerant with the cylinder in up sid
28. must be the EKHBH X016 unit m Do not rinse the outdoor unit This may cause electric designed exclusively for R410A shocks or fire Installation For installation of the indoor unit refer to the indoor unit installation manual m Never operate the unit without the thermistor R3T R4T burning of the compressor may result B Be sure to confirm the model name and the serial no of the outer front plates when attaching detaching the plates to avoid mistakes EB When closing the service panels take care that the tightening torque does not exceed 4 1 Nem DAIKIN ERHQ011 016AAV3 Outdoor unit for air to water heat pump 4PW37976 1D Installation manual 2 Accessories B Check if the following accessories are included with the unit Places where the indoor and outdoor units piping and wiring lengths come within the allowable ranges Places where water leaking from the unit cannot cause damage to the location e g in case of a blocked drain pipe Places where the rain can be avoided as much as possible Installation manual 1 2 When installing the unit in a place exposed to strong wind pay special attention to the following Cable tie 2 5 Strong winds of 5 m sec or more blowing against the outdoor SA unit s air outlet causes short circuit suction of discharge air and this may have the following consequences See the figure below for the location of the ac
29. ng angle Recommended arm 2 mm degrees length of spanner mm 09 5 60 90 200 015 9 30 60 300 DAIKIN ERHQ011 016AAV3 Outdoor unit for air to water heat pump 4PW37976 1D Installation manual 6 B When it is expected that the operating pressure will be low for example when cooling will be performed while the outside air temperature is low sufficiently seal the flare nut in the stop valve on the gas line with silicon sealant to prevent freezing Silicon sealant Make sure there is no gap Opening closing the stop valve Opening the stop valve 1 Remove the valve cover 2 Insert a hexagon wrench liquid side 4 mm gas side 6 mm into the valve stem and turn the valve stem counterclockwise 3 When the valve stem cannot be turned any further stop turning The valve is now open Closing the stop valve 1 Remove the valve cover 2 Insert a hexagon wrench liquid side 4 mm gas side 6 mm into the valve stem and turn the valve stem clockwise 3 When the valve stem cannot be turned any further stop turning The valve is now closed Closing direction Liquid side Gas side Cautions on handling the stem cap EB The stem cap is sealed where indicated by the arrow Take care not to damage it N B After handling the stop valve make sure to tighten the stem cap securely For the tightening torque refer to the table below Check for refriger
30. ngth PRECAUTIONS ON REFRIGERANT PIPING Do not allow anything other than the designated refrigerant to get mixed into the freezing cycle such as air etc If any refrigerant gas leaks while working on the unit ventilate the room thoroughly right away m Use R410A only when adding refrigerant Installation tools Make sure to use installation tools gauge manifold charge hose etc that are exclusively used for R410A installations to withstand the pressure and to prevent foreign materials e g mineral oils and moisture from mixing into the system Installation manual DAIKIN ERHQ011 016AAV3 Outdoor unit for air to water heat pump 4PW37976 1D In order to prevent dirt liquid or dust from entering the piping cure the piping with a pinch or taping Brazing guidelines B Make sure to blow through with nitrogen when brazing Blowing through with nitrogen prevents the creation of large quantities of oxidized film on the inside of the piping An oxidized 1 un film adversely affects valves and compressors in the refrigerating system and prevents proper operation B The nitrogen pressure should be set to 0 02 MPa i e just enough so it can be felt on the skin with a pressure reducing valve Place Installation period Protection method More than a month Pinch
31. nt rusting Preventing foreign objects from entering Plug the pipe through holes with putty or insulating material procured locally to stop up all gaps as shown in the figure rr 1 1 Putty or insulating material produced locally Insects or small animals entering the outdoor unit may cause a short circuit in the electrical box Precautions when connecting field piping and regarding insulation m Be careful not to let the indoor and outdoor piping come into contact with the compressor terminal cover If the liquid side piping insulation might come into contact with it adjust the height as shown in the figure below Also make sure the field piping does not touch the bolts or outer panels of the compressor m When the outdoor unit is installed above the indoor unit the following can occur The condensated water on the stop valve can move to the indoor unit To avoid this please cover the stop valve with sealing material Installation manual 7 DAIKIN ERHQ011 016AAV3 Outdoor unit for air to water heat pump 4PW37976 1D If the temperature is higher than 30 C and the humidity is higher than RH 80 then the thickness of the sealing materials should be at least 20 mm in order to avoid condensation on the surface of the sealing Be sure to insulate the liquid and gas side field piping The highest temperature that the gas side piping can reach is around 120 C so be sure to use insulating material whic
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33. ow until all moisture has been removed General guidelines All piping inside the unit has been factory tested for leaks Use a 2 stage vacuum pump with a non return valve which can evacuate to a gauge pressure of 100 7 kPa 5 Torr absolute 755 mm Hg Connect the vacuum pump to both the service port of the gas stop valve and the liquid stop valve to increase efficiency Do not purge the air with refrigerants Use a vacuum pump to evacuate the installation No additional refrigerant is provided for air purging Make sure that the gas stop valve and liquid stop valve are firmly closed before performing the leak test or vacuum drying Setup See figure 5 Pressure gauge Nitrogen Refrigerant Weighing machine Vacuum pump oar Stop valve Leak test The leak test must satisfy specification EN 378 2 1 Vacuum leak test 1 1 Evacuate the system from the liquid and gas piping to 100 7 kPa 5 Torr 1 2 Once reached turn off the vacuum pump and check that the pressure does not rise for at least 1 minute 1 3 Should the pressure rise the system may either contain moisture see vacuum drying below or have leaks Pressure leak test 2 1 Break the vacuum by pressurizing with nitrogen gas to a minimum gauge pressure of 0 2 MPa 2 bar Never set the gauge pressure higher than the maximum operation pressure of the unit i e 4 0 MPa 40 bar 2 2 Test for leaks
34. own operation on Corrosion of copper pipes or soldered parts may page 10 cause the refrigerant to leak Never directly touch any accidental teaking Where there is machinery which emits refrigerant This could result in severe wounds caused electromagnetic waves by frostbite Electromagnetic waves may disturb the control system and cause malfunction of the equipment A CAUTION Where flammable gases may leak where carbon B Note for installing the outdoor unit fiber or ignitable dust is suspended in the air or In cold areas where the outside air temperature where volatile flammables such as thinner or remains below or around the freezing point for a few gasoline are handled days the outdoor unit s drain may freeze If so it is Such gases may cause a fire recommended to install a heater tape in order to Where the air contains high levels of salt such as protect drain from freezing that near the ocean E Earth the am 7 B Where voltage fluctuates a lot such as that in Earthing resistance should be according to national factories regulations Do not connect the earth wire to gas or Wi In vehicles or vessels water pipes lightning conductor Where acidic or alkaline vapour is present telephone earth wire Incomplete earthing may cause electric shocks BEFORE INSTALLATION B Gas pipe Ignition or explosion may occur if the gas leaks Since maximum working pressure is 4 0 MPa or 40 bar m Water pipe pipe
35. re there are no missing phases or reverse phases B 5 the unit properly earthed m 5 the wiring between units connected in series correct Are any ofthe wiring attachment screws loose 5 the insulation resistance at least 1 MQ Use 500 V mega tester when measuring insulation Do not use mega tester for low voltage circuits Refrigerant sis the size of the piping appropriate piping 5 the insulation material for the piping attached securely Are both the liquid and gas pipes insulated Are the stop valves for both the liquid side and the gas side open Extra B you write down the extra refrigerant and the refrigerant refrigerant piping length B Be sure to perform a test run m Be sure to fully open the liquid side and gas side stop valves If you operate the unit with stop valves closed the compressor will break down Be sure to execute the first test run of the installation in cooling mode operation B Never leave the unit unattended with an open front panel during test run Test run Carry out the test run in accordance with the indoor installation manual to ensure that all functions and parts are working properly 1 European International Technical Standard setting the limits for harmonic currents produced by equipment connected to public low voltage systems with input current gt 16 A and 75 A per phase Installation manual DAIKIN ERHQ011 016AAV3 Outdoor unit for
36. res with vinyl tubes to prevent the edge of the knock out hole from cutting the wires EB Follow the electric wiring diagram for electrical wiring works Form the wires and fix the cover firmly so that the cover may be fit in properly Precautions on wiring of power supply and inter unit wiring B Use a round crimp style terminal for connection to the power supply terminal board In case it cannot be used due to unavoidable reasons be sure to observe the following instruction 1 Round pressure terminal 2 Cut out section lt 3 Cup washer 1 23 Do not connect wires of different gauge to the same power supply terminal Looseness in the connection may cause overheating When connecting wires of the same gauge connect them according to the below figure eem e x X Wi Use the correct screwdriver to tighten the terminal screws Small screwdrivers can damage the screw head and prevent appropriate tightening OOver tightening the terminal screws can damage the screws B See the table below for tightening torques for the terminal screws Tightening torque N m M4 X1M 1 2 1 8 M5 X1M 2 0 3 0 M5 EARTH 3 0 4 0 m Refer to the installation manual attached to the indoor unit for wiring of indoor unit etc Attach an earth leakage circuit breaker and fuse to the power supply line See figure 6 1 Earth leakage circuit breaker 2 Fuse 3 Remote controller EB In w
37. s of larger wall thickness may be required Refer to Hard vinyl tubes are not effective earths paragraph Selection of piping material on page 5 Lightning conductor or telephone earth wire Electric potential may rise abnormally if struck by a Precautions for R410A lightning bolt H Be sure to install an earth leakage circuit breaker The refrigerant requires strict cautions for keeping the system Failure to install an earth leakage circuit breaker may clean dry and tight cause electric shocks and fire Clean and dry Install drain piping according to this installation Foreign materials including mineral oils or moisture should be manual to ensure good drainage and insulate the prevented from getting mixed into the system pipe to prevent condensation 3 Tight T Improper drain piping may cause water leakage and Read Precautions on refrigerant piping on page 5 carefully and make the furnitures get wet follow these procedures correctly WE Install the indoor and outdoor units power wire and Since R410A is a mixed refrigerant the required additional connecting wire at least 1 meter away from televisions refrigerant must be charged in its liquid state If the refrigerant or radios to prevent image interference or noise is in state of gas its composition changes and the system will Depending on the radio waves a distance of 1 meter not work properly may not be sufficient to eliminate the noise B The connected indoor unit
38. ssure side Secure the electrical wiring with cable ties as shown in the figure below so that it does not come in contact with the piping particularly on the high pressure side Make sure no external pressure is applied to the terminal connectors When installing the earth leakage circuit breaker make sure that it is compatible with the inverter resistant to high frequency electrical noise to avoid unnecessary opening of the earth leakage circuit breaker Secure the wiring in the order shown below 1 Secure the earth wire to the stop valve attachment plate so that it does not slide Secure the earth wire to the stop valve attachment plate one more time along with the electric wiring and the inter unit wiring Lay the electrical wiring so that the front cover does not rise up when doing wiring work and attach the front cover securely 1 Switch box 2 Stop valve mounting plate 3 Earth 4 Cable tie 5 Wiring between units 6 Power supply and earth wiring 1 Power supply and earth wiring 2 Wiring between unit ERHQ011 016AAV3 Outdoor unit for air to water heat pump 4PW37976 1D DAIKIN Installation manual 10 B When cables are routed from the unit a protection sleeve for the conduits PG insertions can be inserted at the knock out hole See figure 3 Wire Bush Nut Frame Hose Inside Outside U Pa 5 When you do not use a wire conduit be sure to protect the wi
39. stallation manual Improper installation may lead to water leakage electric shocks or fire Consult your local dealer regarding what to do in case of refrigerant leakage When the unit is to be installed in a small room it is necessary to take proper measures so that the amount of any leaked refrigerant does not exceed the concentration limit in the event of a leakage Otherwise this may lead to an accident due to oxygen depletion Be sure to use only the specified accessories and parts for installation work Failure to use the specified parts may result in water leakage electric shocks fire or the unit falling Install the unit on a foundation that can withstand its weight Insufficient strength may result in the fall of equipment and causing injury Carry out the specified installation work in consideration of strong winds typhoons or earthquakes Improper installation work may result in accidents due to fall of equipment Make certain that all electrical work is carried out by qualified personnel according to the local laws and regulations and this installation manual using a Separate circuit Insufficient capacity of the power supply circuit or improper electrical construction may lead to electric shocks or fire Make sure that all wiring is secure using the specified wires and ensuring that external forces do not act on the terminal connections or wires Incomplete connection or fixing may cause a fire When w
40. ster oil or ether oil and initially tighten 3 or 4 turns Cautions on handling the stop valve by hand before tightening firmly B sure to keep both stop valves open during operation B The figure below shows the name of each part required in handling the stop valve 1 Service port and service port cap x 2 Valve stem m When loosening a flare nut always use two wrenches together 3 Field piping connection When connecting the piping always use a spanner and torque 4 Stem cap wrench together to tighten the flare nut to prevent flare nut cracking and leaks 1 1 Torque wrench 2 Spanner Wi The stop valve is factory closed 3 Piping union Do not apply excessive force to the valve stem Doing so may 2 4 Flare nut break the valve body B Since the stop valve mounting plate may be deformed if only a torque wrench is used to loosen or tighten the flare nut always make sure to secure the stop valve with a spanner then loosen or tighten the flare nut with a torque wrench Do not place the spanner on the stem cap as this could cause a Not recommended but in case of emergency refrigerant leak Should you be forced to connect the piping without a torque 4 Banker wrench follow the following installation method p i i 2 Torque wrench B Tighten the flare nut using a spanner until the tightening torque suddenly increases From that position further tighten the flare nut the angle listed 1 below Piping size Further tighteni
41. the pipe Outdoor unit 1 2 3 4 5 Less than a month Regardless of the Pinch or tape the pipe Q Indoor unit period 1 Great caution is needed when passing copper tubes through lt 6 m 6 walls 1 Refrigerant piping 2 Part to be brazed Flaring guidelines 3 Taping m Flares should not be re used New ones should be made in 4 Manual valve order to prevent leaks 5 Pressure reducing valve B Use a pipe cutter and flare tool suitable for the refrigerant used 6 Nitrogen EB Only use the flare nuts included with the unit Using different EE flare nuts may cause the refrigerant to leak Do not use anti oxidants when brazing the pipe joints m Please refer to the table for flaring dimensions and tightening Resid e clog pipes ane oreak equipment torques too much tightening will result in splitting the flare m Do not use flux when brazing copper to copper refrigerant piping Use phosphor copper brazing filler alloy BCuP which Piping size Tightening Flare dimensions A Flare shape does not require flux mm torque N m mm mm B Flux has an extremely harmful influence on refrigerant piping 09 5 32 7 39 9 128 139 systems For instance if chlorine based flux is used it will cause pipe corrosion or in particular if the flux contains fluorine it will deteriorate the refrigerant oil 015 9 61 8 75 4 19 4 19 7 Stop valve operation m When connecting the flare nut coat the flare both inside and outside with e
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