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Daikin RWEYQ252PTJU [10/24] Selection of location
![Daikin RWEYQ252PTJU [10/24] Selection of location](/views2/1718371/page10/bga.png)
5 English
3. SELECTION OF LOCATION
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.
1.
The foundation is strong enough to support the weight of the unit and
the floor is flat to prevent vibration and noise generation.
2.
Consider the space required for refrigerant piping work when install-
ing. Refer to [Necessary Space].
3.
There is no danger of fire due to leakage of inflammable gas.
4.
The piping length between the outside unit and the indoor unit may
not exceed the allowable piping length. “9. REFRIGERANT PIPING”.
5.
Locations where the noise of the unit operating will not disturb
nearby houses, etc.
6.
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 95 °F and the humidity does not
exceed 80%.
[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 a 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.
DANGER
• Do not install unit in an area where flammable materials are
present due to risk of explosion resulting in serious injury or death.
• 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”.
NOTE
1.
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 and trans-
mission lines.
2.
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”.
3.
Cooling tower
Use a closed type cooling tower without fail. (Open type tower
cannot be used.)
4.
Strainer
Install the strainer (accessory) without fail at the inlet of water pip-
ing. (If sands, wastes, rust particles, etc. are mixed in the water cir-
culation system, damage to the plate type heat exchanger may be
caused by the corrosion of metal materials and clogging of the
heat exchanger.)
WARNING
Do not install in the following locations.
•
Locations such as kitchens which contain a lot of mineral oil or steam
in the atmosphere or where oil may splatter on the unit.
Resin parts may deteriorate, causing the unit to fall or leak.
• Locations where sulfurous acids and other corrosive gases may be
present in the atmosphere.
Copper piping and soldered joints may corrode, causing refrigerant
to leak.
• Locations where equipment that produces electromagnetic waves is
found.
The electromagnetic waves may cause the control system to mal-
function, preventing normal operation.
4. INSPECTING AND HANDLING THE UNIT
At delivery, the package should be checked and any damage should be
reported immediately to the carrier claims agent.
When handling the unit, take into account the following:
1.
Fragile, handle the unit with care.
Keep the unit upright in order to avoid compressor damage.
2.
Choose the path along which the unit is to be brought in ahead of
time.
3.
In order to prevent any damage to the unit during installation, use
slings (cloth) or patch plates and lift the unit referring to figure 4.
4.
Lift the unit preferably with a crane and 2 belts of at least 27 ft long.
5.
When lifting the unit with a crane, always use protectors to prevent
belt damage and pay attention to the position of the unit’s center of
gravity.
6.
Be sure use the standard supplied accessories and dedicated parts
as installation parts.
(Refer to figure 4)
1. Patch plates or clothes
2. Belt sling
NOTE
• Use belt sling of 13/16” width or less which adequately bears the
weight of the product.
5. UNPACKING AND PLACING THE UNIT
• Make sure the area around the machine drains properly by setting up
drainage grooves around the foundation.
• Make sure the unit is installed level on a sufficiently strong base to
prevent vibration and noise.
• Secure the unit to its base using foundation bolts. (Use four commer-
cially available M12-type foundation bolts, nuts, and washers.)
• The foundation bolts should be inserted 13/16”.
• Fix 4 foundation bolts.
• Support the unit with the foundation which is
larger than the hatched area shown in figure 5.
(Refer to figure 5)
1. Front side
2. Position of foundation bolts
3. Hole for a foundation bolt
(φ11/16 ida. holes at 4 corners)
4. Avoid such a foundation where the unit is supported by
4 corner points.
CAUTION
• When installing the unit closely contacting the wall for any
unavoidable reason, arrange so that no vibration from the unit may
be transmitted to the wall surface by insulating the vibration using
cushions, etc.
13/16”
Содержание
- Installation manual 1
- Rweyq72ptju rweyq84ptju rweyq144ptju rweyq168ptju rweyq216ptju rweyq252ptju 1
- System air conditioner 1
- Contents 6
- English 6
- Installation manual 6
- Safety considerations 6
- English 2 7
- 1 combination 8
- 2 standard operation limit 8
- 3 standard supplied accessories 8
- 4 option accessory 8
- English 8
- Introduction 8
- 5 technical specifications 9
- 6 electrical specifications 9
- English 4 9
- English 10
- Inspecting and handling the unit 10
- Selection of location 10
- Unpacking and placing the unit 10
- 1 when designing the equipment 11
- 2 before starting a test run 11
- English 6 11
- Handling of the brazed plate type heat exchanger 11
- Water piping work 11
- 3 daily service and maintenance 12
- 4 water quality 12
- 5 maintenance of plate type heat exchanger 12
- After cleaning has been completed make sure that the unit can be operated in a normal fashion 12
- Because the plate type heat exchanger has a structure which does not permit disassembling and cleaning follow the following proce dures for cleaning 12
- Before entering the season for use carry out the following inspections 12
- 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 12
- 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 12
- English 12
- 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 stopvalve in front of that inlet water pipe connection port and for a stopvalve 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 degree 12
- 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 12
- 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 12
- 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 whatever 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 12
- 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 once 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 12
- 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 12
- Water quality standards for chilled water hot water and make up water 4 6 12
- 1 optional parts 13
- 2 power circuit and cable requirements 13
- 3 general 13
- 4 examples 13
- English 8 13
- Field wiring 13
- English 14
- Setting the cool heat operation type 14
- Setting the interlock circuit and pump operation output 14
- 5 in case of a local setting 15
- Connect same thickness wiring to both sides 15
- Cup washer 15
- Cut out section 15
- English 10 15
- It is forbidden to connect two to one side 15
- It is forbidden to connect wiring of different thicknesses 15
- Power wire round pressure terminal 15
- Round pressure terminal 15
- 1 selection of piping material 16
- 2 protection against contamination when install ing pipes 16
- 3 pipe connection 16
- English 16
- Refrigerant piping 16
- 4 connecting the refrigerant piping 17
- English 12 17
- If 80 in or less 17
- If 80 in or more 17
- Pattern 1 17
- Pattern 2 17
- Prohibited pattern 17
- 5 example of connection 18
- Branch with refnet joint branch with refnet joint and refnet header branch with refnet header 18
- English 18
- Example of connection 18
- How to calculate the additional refrigerant to be charged 18
- 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 bs unit is required 18
- Pipe size selection 18
- Refrigerant branch kit selection 18
- 6 air tight test and vacuum drying 19
- 7 pipe insulation 19
- 8 checking of device and installation conditions 19
- 9 additional refrigerant charge 19
- Charge with the tank upright 19
- Charge with the tank upside down 19
- English 14 19
- There is a siphon tube inside so there is no need to turn the tank upside down 19
- 10 stop valve operation procedure 20
- English 20
- 1 air discharge 21
- 2 before turn on the power supply 21
- 3 check operation 21
- Checks after installation 21
- English 16 21
- Test run 21
- 4 check of normal operation 22
- Caution for refrigerant leaks 22
- English 22
- English 18 23
- P153897 12p em09a022 24
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