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Daikin EWWH685DZXEA2 [7/32] Installation safety
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D-EIMWC01405-18EN- 7/32
Physical characteristics of refrigerant R1234ze (E)
Safety Class
A2L
PED Fluid Group
2
Pratical limit (kg/m
3
)
0.061
ATEL/ ODL (kg/m
3
)
0.28
LFL (kg/m
3
)@ 60°C
0.303
Vapour density @25°C, 101.3 kPa (kg/m
3
)
4.66
Molecular Mass
114.0
Normal Boling Point (°C)
-19
GWP (100 yr ITH)
7
GWP (ARS 100 yr ITH)
<1
Auto Ignition Temperature (°C)
368
1.4 Installation Safety
All EWWD(H) VZ machines are built in accordance with the main European Directives (Machinery Directive, Low Voltage
Directive, Electromagnetic Compatibility Directive for PED pressurized equipment), make sure you also receive the
declaration of product conformity with the directives along with the documentation.
Before machine installation and commissioning, the people involved in this activity must have acquired the information
necessary to carry out these tasks, applying all the information collected in this book.
Do not allow unauthorized and/or unskilled personnel to access the unit.
Always protect the operating personnel with personal protective equipment appropriate for the tasks to be performed.
Commonly used personal equipment include: protective helmet, goggles, gloves, headphones, safety shoes. Additional
individual and group protective equipment should be adopted after an adequate analysis of the specific risks in the area of
relevance, according to the activities to be performed.
The chiller has to be installed in open air or machinery room (location classification III).
To ensure location classification III a mechanical vent on the secondary circuit(s) has to be installed.
Local building codes and safety standards shall be followed; in absence of local codes and standards refer to EN 378-
3:2016 as a guide.
In paragraph “Additional guidelines for safe use of R1234ze(E)” there are provided additional informations that should be
added to the requirements of safety standards and building codes.
1.4.1 Additional guidelines for safe use of R1234ze(E) for equipment located in the open air
Refrigerating systems sited in the open air shall be positioned to avoid leaked refrigerant flowing into a building or otherwise
endangering people and property.
The refrigerant shall not be able to flow into any ventilation fresh air opening, doorway, trap door or similar opening in the
event of a leak. Where a shelter is provided for refrigerating equipment sited in the open air it shall have natural or forced
ventilation.
For refrigeration systems installed outside in a location where a release of refrigerant can stagnate e.g. below ground, then
the installation shall comply with the requirements for gas detection and ventilation of machinery rooms.
1.4.2 Additional guidelines for safe use of R1234ze(E) for equipment located in a machinery room
When a machinery room is chosen for the location of the refrigerating equipment it shall be located in accordance with
local and national regulations. The following requirements (according to EN 378-3:2016) can be used for the assessment.
A risk analysis based on the safety concept for the refrigerating system (as determined by the manufacturer and
including the charge and safety classification of the refrigerant used) shall be conducted to determine whether it
is necessary to place the refrigerating system in a separate refrigeration machinery room.
Machinery rooms should not be used as occupied spaces. The building owner or user shall ensure that access
is permitted only by qualified and trained personnel doing the necessary maintenance to the machinery room or
general plant.
Machinery rooms shall not be used for storage with the exception of tools, spare parts and compressor oil for the
installed equipment. Any refrigerants, or flammable or toxic materials shall be stored as required by national
regulations.
Open (naked) flames shall not be permitted in machinery rooms, except for welding, brazing or similar activity
and then only provided the refrigerant concentration is monitored and adequate ventilation is ensured. Such
open flames shall not be left unattended.
A remote switching (emergency type) for stopping the refrigerating system shall be provided outside the room
(near the door). A similar acting switch shall be located at a suitable location inside the room.
All piping and ducting passing throught floors, ceiling and walls of machinery room shall be sealed.
Hot surfaces shall not exceed a temperature of 80 % of the auto-ignition temperature (in °C) or 100 K less than
the auto-ignition temperature of the refrigerant, whichever is higher.
Содержание
- Cooling capacity from 320 to 1480 kw 1
- D eimwc01405 18_01en 1
- Ewwd dz 1
- Ewwh dz 1
- Hz refrigerant hfc r134a r1234ze e 1
- Installation maintenance and operating manual 1
- Water cooled oil free centrifugal chillers 1
- Contents 2
- D eimwc01405 18en 2 32 2
- Downloaded from www manualslib com manuals search engine 2
- Figures 2
- Downloaded from www manualslib com manuals search engine 3
- D eimwc01405 18en 4 32 4
- Downloaded from www manualslib com manuals search engine 4
- Fig 2 dual compressor unit component descriptions 4
- Application 6
- General description 6
- Information about r1234ze e 6
- Introduction 6
- Installation safety 7
- Installation 9
- Receiving and handling 9
- Storage 9
- Lifting instructions 11
- Positioning and assembly 11
- Shock absorbers 11
- Anchoring 12
- Water pipes 12
- Water treatment 13
- Minimum water content in the system 14
- Temperature limits and water flow 14
- Condenser protection and design considerations 15
- Evaporator frost protection 15
- Chilled water control sensor 16
- 386 392 17
- 392 387 x 100 17
- Control circuit 17
- Electrical connections 17
- Open the isolation and or shut off valves 17
- Phase imbalance 17
- Safety valve 17
- Operation 19
- Operator s responsibilities 19
- Unit description 19
- Compressor lead lag 20
- High condensing pressure control 20
- Regulation type 20
- Safeties for each cooling compressor 20
- System safeties 20
- Maintenance 21
- Pressure temperature table 22
- Routine maintenance 23
- Cleaning and storage 27
- Seasonal maintenance 27
- Service schedule 27
- Maintenance schedule 28
- All installation work must be completed as required above the plant inspected and unit ready for operations if plant conditions do not allow the unit to operate within the limits set in the catalogue the unit cannot be started if the above conditions cannot be guaranteed the customer is liable for the daikin applied commissioning approval 29
- Checks before first start up 29
- Daikin unit serial no ________________________________________________________________ daikin unit serial no ________________________________________________________________ 29
- Date __________________________________ 29
- Job name _________________________________________________________________________ job name _________________________________________________________________________ 29
- Name _________________________________ 29
- Notes this list must be completed and sent to the local daikin service department at least two 29
- Signature _________________________________ signature _________________________________ 29
- Site engineer 29
- Unit model no s ___________________________________________________________________ unit model no s ___________________________________________________________________ 29
- Warning the unit should never be operated before daikin applied authorised start up failure to observe this warning could cause serious equipment damages and void the warranty 29
- Weeks before the start 29
- Factory and field charged units instructions 30
- Important information on used refrigerant 30
- Demolition and disposal 31
- Duration 31
- Periodic checks and commissioning of pressure vessels 31
- Daikin applied europe s p a 32
- The present publication is drawn up by of information only and does not constitute an offer binding upon daikin applied europe s p a daikin applied europe s p a has compiled the content to the best of their knowledge refer to the data communicated at the time of the order all the data and specifications contained herein are liable to change without notice refer to the data communicated at the time of the order daikin applied europe s p a cannot be held liable for direct or indirect damage in the broadest sense of the term arising from or related to the use and or interpretation of this publication all content is copyrighted by daikin applied europe s p a 32
- Via piani di santa maria 72 00072 ariccia rome italy tel 39 06 93 73 11 fax 39 06 93 74 014 32
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