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Daikin RWEYQ144PTJU [21/95] Installation of outside units
![Daikin RWEYQ144PTJU [21/95] Installation of outside units](/views2/1718376/page21/bg15.png)
Installation Manual EDUS301214-N
20 Installation of Outside Units
3P153897-12X
¢Cautions for installation of multiple outside units²
1.
The piping between the outside units must be routed level or slightly
upward to avoid the risk of oil detention to the piping side.
2.
The gas piping (both discharge and suction gas piping in case of the
heat recovery system) after branched, install without fail a trap of 8
in. or more using the piping included in the piping kit for connecting
the outside unit. Otherwise, the refrigerant may stay within the pip-
ing, causing any damage to the outside unit.
3.
If the piping length between the outside unit connecting pipe kit or
between the outside units exceeds 80 in., create a rise of 8 in. or
more in the gas piping within a length of 80 in. from the kit.
Pattern 1
Pattern 2
Prohibited pattern
to indoor
unit
to indoor
unit
to indoor
unit
Downward
inclination
Downward
inclination
Change to pattern 1 or pattern 2
Oil remains in piping
Piping between outside units
8 in. or more
No trap has been installed in the gas piping.
★Oil may remain in the farthest outside unit.
Change to pattern 1 or pattern 2
to indoor unit
Prohibited pattern
to indoor
unit
to indoor
unit
If 80 in. or less
If 80 in. or more
80 in. or less
80 in. or less
Rising height:
8 in. or more
Piping between outside unit
Содержание
- Installation 1
- Center of gravity 2 installation manual 2
- Field setting 0 2
- Installation of 2
- Installation of outside units 2
- Instructions for antifreeze usage 9 4 refnet pipe system 0 2
- Outside units 2
- Refnet joint and header 6 2
- Center of gravity 3
- Center of gravity edus301214 n 3
- Installation of outside units 3
- Rweyq72ptju rweyq84ptju 3
- Rweyq72pydn rweyq84pydn 3
- Unit in mm 3
- Edus301214 n installation manual 4
- Installation manual 4
- Installation of outside units 3 4
- Rweyq ptju rweyq pydn 4
- Figure 10 5
- Heat recovery system heat pump system 5
- Installation manual edus301214 n 5
- Installation of outside units 5
- P153897 12x 5
- Edus301214 n installation manual 6
- Installation of outside units 5 6
- Installation manual edus301214 n 7
- Installation of outside units 7
- Edus301214 n installation manual 8
- Installation of outside units 7 8
- Safety considerations 9
- 1 combination 11
- 2 standard operation limit 11
- 3 standard supplied accessories 11
- 4 option accessories 11
- Installation manual edus301214 n 11
- Installation of outside units 11
- Introduction 11
- 5 technical specifications 12
- 6 electrical specifications 12
- Edus301214 n installation manual 12
- Installation of outside units 11 12
- P153897 12x 12
- An inverter air conditioner may cause electronic noise generated from am broadcasting examine where to install the main air con ditioner and electric wires keeping proper distances away from stereo equipment personal computers etc refer to figure 3 1 indoor unit 2 branch switch overcurrent breaker 3 remote controller 4 cool heat selector 5 personal computer or radio if the electric wave of am broadcasting is particularly weak keep dis tances of 10 ft or more and use conduit tubes for power supply and transmission wiring 13
- Consider the space required for refrigerant piping work when install ing refer to necessary space 13
- Cooling tower use a closed type cooling tower without fail open type tower cannot be used 13
- Danger 13
- Do not install unit in an area where flammable materials are present due to risk of explosion resulting in serious injury or death 13
- Installation manual edus301214 n 13
- Installation of outside units 13
- Locations where the noise of the unit operating will not disturb nearby houses etc 13
- Locations with airflow and ventilation holes capable of dissipating heat from the machine and where the ambient temperature around the outside unit is between 35 and f and the humidity does not exceed 80 13
- Necessary space when installing secure the space mentioned below without fail refer to figure 2 1 in case of a single installation inch 2 in case of series installations inch 3 top view 4 side view 5 outside unit 6 service space front side 7 service space back side 8 space for installing water piping secure an enough space for removing the front panel 9 ventilation space above the area of the outside unit 10 secure spaces in the front back and top sides as same as the case of single installation 13
- Refrigerant is heavier than air and replaces oxygen a massive leak could lead to oxygen depletion especially in basements and an as phyxiation hazard could occur leading to serious injury or death re fer to the chapter caution for refrigerant leaks 13
- Selection of location 13
- Strainer install a strainer 50 mesh or more without fail at the inlet of water piping if sands wastes rust particles etc are mixed in the water circulation system damage to the plate type heat exchanger may be caused by the corrosion of metal materials and clogging of the heat exchanger 13
- The foundation is strong enough to support the weight of the unit and the floor is flat to prevent vibration and noise generation 13
- The piping length between the outside unit and the indoor unit may not exceed the allowable piping length 9 refrigerant piping 13
- There is no danger of fire due to leakage of inflammable gas 13
- This unit does not have specifications for outdoor installation the unit must be installed indoors example machine room paying attention to the conditions mentioned below select the place for installation with a prior approval of customer 13
- Water quality water containing high level of foreign materials may cause the corrosion of heat exchanger and piping or scale accumulation use water satisfying 7 4 water quality 13
- Edus301214 n installation manual 14
- Inspecting and handling the unit 14
- Installation of outside units 13 14
- Unpacking and placing the unit 14
- Water piping work 14
- 1 when designing the equipment 15
- 2 before starting a test run 15
- 3 daily service and maintenance 15
- 4 water quality 15
- Handling of the brazed plate type heat exchanger 15
- Installation manual edus301214 n 15
- Installation of outside units 15
- 1 optional parts 16
- 2 power supply circuit and wire requirements 16
- 5 maintenance of plate type heat exchanger 16
- Edus301214 n installation manual 16
- Field wiring 16
- Installation of outside units 15 16
- 3 general 17
- 4 examples 17
- Installation manual edus301214 n 17
- Installation of outside units 17
- Setting the interlock circuit and pump operation output 17
- Edus301214 n installation manual 18
- Installation of outside units 17 18
- Setting the cool heat operation type 18
- 1 selection of piping material 19
- 5 in case of a local setting 19
- Installation manual edus301214 n 19
- Installation of outside units 19
- Refrigerant piping 19
- 2 protection against contamination when install ing pipes 20
- 3 pipe connection 20
- 4 connecting the refrigerant piping 20
- Edus301214 n installation manual 20
- Installation of outside units 19 20
- If 80 in or less 21
- If 80 in or more 21
- Installation manual edus301214 n 21
- Installation of outside units 21
- No trap has been installed in the gas piping 21
- Pattern 1 21
- Pattern 2 21
- Prohibited pattern 21
- 5 example of connection 22
- Edus301214 n installation manual 22
- For geothermal applications if the condenser is lower than the indoor units the maximum vertical separation is 65 ft 20 m 22
- In case of a system of switching between cooling and heating all systems use 2 tube piping for suction gas piping and liquid piping no b is required 22
- Installation of outside units 21 22
- 6 air tight test and vacuum drying 23
- 7 pipe insulation 23
- 8 checking of device and installation conditions 23
- 9 additional refrigerant charge 23
- Charge with the tank upright 23
- Charge with the tank upside down 23
- Installation manual edus301214 n 23
- Installation of outside units 23
- There is a siphon tube inside so there is no need to turn the tank upside down 23
- 10 stop valve operation procedure 24
- Edus301214 n installation manual 24
- Installation of outside units 23 24
- 1 air discharge 25
- 2 before turn on the power supply 25
- 3 check operation 25
- Checks after installation 25
- Installation manual edus301214 n 25
- Installation of outside units 25
- Test run 25
- 4 check of normal operation 26
- Caution for refrigerant leaks 26
- Edus301214 n installation manual 26
- Installation of outside units 25 26
- Installation manual edus301214 n 27
- Installation of outside units 27
- Edus301214 n installation manual 28
- Installation of outside units 27 28
- Rweyq ptju in case of manufacturing code rweyq ptju9 28
- Installation manual edus301214 n 29
- Installation of outside units 29
- Edus301214 n installation manual 30
- Installation of outside units 29 30
- Installation manual edus301214 n 31
- Installation of outside units 31
- Safety considerations 32
- 1 combination 34
- 2 standard operation limit 34
- 3 standard supplied accessories 34
- 4 option accessory 34
- Edus301214 n installation manual 34
- Installation of outside units 33 34
- Introduction 34
- 5 technical specifications 35
- 6 electrical specifications 35
- Installation manual edus301214 n 35
- Installation of outside units 35
- Edus301214 n installation manual 36
- Inspecting and handling the unit 36
- Installation of outside units 35 36
- Selection of location 36
- Unpacking and placing the unit 36
- 1 when designing the equipment 37
- 2 before starting a test run 37
- Handling of the brazed plate type heat exchanger 37
- Installation manual edus301214 n 37
- Installation of outside units 37
- Water piping work 37
- 3 daily service and maintenance 38
- 4 water quality 38
- 5 maintenance of plate type heat exchanger 38
- After cleaning has been completed make sure that the unit can be operated in a normal fashion 38
- Because the plate type heat exchanger has a structure which does not permit disassembling and cleaning follow the following proce dures for cleaning 38
- Before entering the season for use carry out the following inspections 38
- Circulate this solution for 15 20 minutes for neutral ization purpose 5 after the process of neutralization has been completed rinse the inner part of the plate type heat exchanger with care using fresh and clean water 6 when using any cleaning agent sold in the market check in advance that such agent has no corrosive features against stain less steel and copper 7 for details of cleaning method ask the manufacturer of related cleaning agent 38
- Conduct a water quality test and make sure that it is within the standard 2 clean the strainer 3 make sure that the flow rate is correct 4 make sure that the operational conditions pressure flow rate outlet temperature etc are normal 38
- Edus301214 n installation manual 38
- For maintenance purposes it is required to provide for a connec tion port on the water inlet and on the water outlet you must con nect a circulation pump inbetween these 2 connection ports when cleaning the plate heat exchanger with chemicals for cleaning the scale in the plate heat exchanger it is recom mended to use a solution with 5 diluted formic citric oxalic ace tic or phosphoric acid never use hydrochloric sulfuric or nitric acid because such solu tions have a strong corrosive feature 2 make sure to provide for a stop valve in front of that inlet water pipe connection port and for a stop valve after the outlet water pipe connection port 3 connect the piping for circulation of cleaning chemicals to the inlet and outlet piping of plate type heat exchanger fill the clean ing solution of 122 144 f for a while in the plate type heat exchanger then circulate the cleaning solution by a pump for 2 5 hours the time for cleaning depends on the temperature of cleaning solution or the degre 38
- Installation of outside units 37 38
- Management of chilled water flow rate if the chilled water flow rate is not enough it will result in the freezing damage to the plate type heat exchanger check for any clogging of the strainer any air being caught any reduction in the flow rate due to failure of circulation pump by measuring the temperature and pressure differences at the inlet and outlet ports of the plate type heat exchanger if the aged difference in the temperature or pressure has increased beyond the proper range the flow rate should have decreased stop the operation and remove the cause before restart ing the operation 38
- Management of water quality the plate type heat exchanger has a structure that does not permit dismantling and cleaning or replacing any parts please pay attention carefully to the quality of water to be used for the plate type heat exchanger in order to prevent corrosion and sticking of scale the water to be used for the plate type heat exchanger should have at least the quality as specified in the table below when using any corrosion prevention agent scale depressant agent etc such agent should have no corrosive features against stainless steel and copper 38
- Notes 1 the circle marks in the columns for corrosion or scale to develop 2 corrosion has a tendency to occur when water temperature is high 104 f or more and if metals with no protective coating what ever are directly exposed to water it would be a good idea to take effec tive measures against corrosion such as adding a corrosion inhibitor or deaeration treatment 3 in a condenser water circuit that uses a closed cooling tower the closed circuit circulating water and make up water must satisfy its water quality standards for the hot water system and passing water and make up water must satisfy those for the circulation type cooling water system 4 the supply water must be clean tap water industrial water or clean underground water do not use purified or softened water 5 the fifteen items in the table above represent typical causes of cor rosion and scale 6 once through water may cause corrosion do not use once through water 38
- Steps to be taken when a freezing protection device was activated when the freezing protection device should be activated during operation remove the cause without fail before restarting the opera tion if the freezing protection device has been activated a par tial freezing has occurred if you restart the operation without removing the cause the plate type heat exchanger will be closed and the ice cannot be melted and in addition the freezing process will be repeated resulting in any damage to the plate type heat exchanger leading to any such accidents that the refrigerant starts leaking or water starts entering the refrigerant circuit 38
- The performance of a plate type heat exchanger may decline due to scale accumulation it may be damaged by freezing due to the drop of flow rate for this reason it is necessary to carry out programmed main tenances at a regular interval in order to prevent the scale from being generated 38
- Water quality standards for chilled water hot water and make up water 4 6 38
- 1 optional parts 39
- 2 power circuit and cable requirements 39
- 3 general 39
- 4 examples 39
- Field wiring 39
- Installation manual edus301214 n 39
- Installation of outside units 39
- Edus301214 n installation manual 40
- Installation of outside units 39 40
- Setting the cool heat operation type 40
- Setting the interlock circuit and pump operation output 40
- 5 in case of a local setting 41
- Connect same thickness wiring to both sides 41
- Cup washer 41
- Cut out section 41
- Installation manual edus301214 n 41
- Installation of outside units 41
- It is forbidden to connect two to one side 41
- It is forbidden to connect wiring of different thicknesses 41
- Power wire round pressure terminal 41
- Round pressure terminal 41
- 1 selection of piping material 42
- 2 protection against contamination when install ing pipes 42
- 3 pipe connection 42
- Edus301214 n installation manual 42
- Installation of outside units 41 42
- Refrigerant piping 42
- 4 connecting the refrigerant piping 43
- If 80 in or less 43
- If 80 in or more 43
- Installation manual edus301214 n 43
- Installation of outside units 43
- Pattern 1 43
- Pattern 2 43
- Prohibited pattern 43
- 5 example of connection 44
- Edus301214 n installation manual 44
- English 44
- For geothermal applications if the condenser is lower than the indoor units the maximum vertical separation is 65 ft 20 m 44
- Installation of outside units 43 44
- 6 air tight test and vacuum drying 45
- 7 pipe insulation 45
- 8 checking of device and installation conditions 45
- 9 additional refrigerant charge 45
- Charge with the tank upright 45
- Charge with the tank upside down 45
- Installation manual edus301214 n 45
- Installation of outside units 45
- There is a siphon tube inside so there is no need to turn the tank upside down 45
- 10 stop valve operation procedure 46
- Edus301214 n installation manual 46
- Installation of outside units 45 46
- 1 air discharge 47
- 2 before turn on the power supply 47
- 3 check operation 47
- Checks after installation 47
- Installation manual edus301214 n 47
- Installation of outside units 47
- Test run 47
- 4 check of normal operation 48
- Caution for refrigerant leaks 48
- Edus301214 n installation manual 48
- Installation of outside units 47 48
- Installation manual edus301214 n 49
- Installation of outside units 49
- Instructions for antifreeze usage 50
- Heat pump series 51
- Layout example 51
- Refnet pipe system 51
- Sample systems 51
- Heat recovery 52
- Sample systems 52
- Series 52
- E d c b first indoor branch 53
- First indoor branch 53
- First outside branch 53
- Heat pump series 53
- Installation of outside units 53
- Max refrigerant piping length 53
- Multiple use 53
- Notes 1 be sure to use a refnet piping kit for the branch of piping 2 a branch part can not be installed to the down flow of the refnet header 3 when the equivalent piping length between the outside and indoor units exceeds 262 ft 80 m the size of main pipes on the liquid side must be increased according to example of connection in the installation manual never increase the suction gas pipe and hp lp gas pipe 4 the maximum actual piping length can be 295 ft 90 m depending on conditions various conditions and requirements have to be met to allow utilisation of 295 ft 90 m piping length be sure to refer to example of connection of the installation manual 53
- Refnet pipe system edus301214 n 53
- Single use 53
- The rest of indoor units are the same as for single use 53
- 3 piping section between outdoor unit and branch selector unit 2 piping section between branch selector unit and indoor unit 54
- Branch selector units bsvq36 60pvju 13 ft 4 m bsvq96pvju 19 ft 6 m 54
- Centralized branch selector units bsv4 6q36pvju 13 ft 4 m 54
- Edus301214 n refnet pipe system 54
- Equivalent piping length of joints and headers reference 54
- Field refrigerant piping 54
- Ft 0 m 54
- Ft 1 m 54
- Heat pump series 54
- Heat recovery series 54
- Installation of outside units 53 54
- Insulation of both liquid and gas pipe 54
- L joints 54
- Pipe size 54
- Refnet header 54
- Refnet joint 54
- Suction hp lp gas piping liquid piping must be insulated example of thermal insulation work 54
- The following materials should be used for all refrigerant piping materials deoxidized phosphorous seamless copper pipe or equivalent 2 the tips for insulation gas and liquid piping must be insulated be sure to insulate the liquid side and gas side piping for the inter unit piping and the refrigerant branch kits and always use 18 type or better insulation for the oil pressure equalizer materials glass fiber or heat resistant polyethylene foam thickness 1 2 inch 13 mm or more depending on national or local code heat resistance be sure to use insulation that is designed for use with hvac systems if you think the humidity around the cooling piping might exceed 86 f 30 c and rh80 reinforce the insulation on the cooling piping at least 1 inch 25 mm thick condensation might form on the surface of the insulation 54
- When the equivalent piping length in cooling operation is calculated the gas pipe size is selected when the equivalent piping length in heating operation is calculated the liquid pipe size is selected 54
- Refnet headers 55
- Refnet joints 55
- Refnet joints and headers 55
- Installation of outside units 57
- Khrp26a22t9 57
- Khrp26a33t9 57
- Khrp26m72tu9 57
- Khrp26m73tu9 57
- Refnet joint and header 57
- Refnet joint and header edus301214 n 57
- Refnet joint branch kit 57
- Unit in 57
- C d3k05706 58
- Edus301214 n refnet joint and header 58
- Installation of outside units 57 58
- Khrp25a22t9 58
- Khrp25a33t9 58
- Khrp25m72tu9 58
- Unit in 58
- Installation of outside units 59
- Khrp25m73tu9 59
- Khrp26a22t9 khrp26a33t9 59
- Refnet joint and header edus301214 n 59
- Unit in 59
- Φ 3 4 φ 7 8 59
- Φ 3 4 φ 7 8 φ 1 59
- Edus301214 n refnet joint and header 60
- Installation of outside units 59 60
- Installation of outside units 61
- Khrp25a22t9 khrp25a33t9 61
- Refnet joint and header edus301214 n 61
- Edus301214 n refnet joint and header 62
- Installation of outside units 61 62
- Installation of outside units 65
- Khrp26m22h9 65
- Khrp26m33h9 65
- Khrp26m72h9 65
- Khrp26m73hu9 65
- Refnet header branch kit 65
- Refnet joint and header edus301214 n 65
- Unit in 65
- 1 4 4 3 4 6 3 4 66
- 1 8 25 5 8 7 2 3 8 16 1 2 66
- C d3k03633d 66
- C d3k03634d 66
- D3k05575 66
- Discharge gas side header 66
- Edus301214 n refnet joint and header 66
- Hp lp gas side 66
- Installation of outside units 65 66
- Insulation 66
- Khrp25m33h9 66
- Khrp25m72h9 66
- Khrp25m73hu9 66
- Liquid side 66
- Liquid side header 66
- Suction gas side 66
- Suction gas side header 66
- Unit in 66
- Installation of outside units 67
- Khrp26m22h9 khrp26m33h9 khrp26m72h9 67
- Refnet joint and header edus301214 n 67
- Outside unit multi connection piping kit 73
- Field setting 81
- Rweyq ptju rweyq pydn 81
- Rweyq ptju in case of manufacturing code rweyq ptju9 88
- Cautions on product corrosion 95
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