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–EIMAC01905-23_00EN - 8/53

Fig. 3

– Hydronic Free cooling

P&ID

Table 3

– Legend hydronic Free cooling P&ID

LEGEND
ID

DESCRIPTION

ACCESS FITTING 1/4” NPT

VALVE

SAFETY VALVE 10 BAR 1/2” MF

AIR VENT 3/8” NPT /TBC)

DRAIN 1/4” NPT

WATER FILTER

TWO WAY VALVE MOTORIZED

WATER FILTER

FREECOOLING COIL

WATER IN LINE

WATER IN MANIFOLD

WATER IN COIL

WATER OUT COIL (FLEXIBLE)

WATR OUT MANIFOLD

FREECOOLING COIL BYPASS

EVAPORATOR WATER IN

EVAPORATOR WATER OUT

TEMPERATURE SENSOR

Water inlet and outlet are indicative. Please refer to the machine dimensional diagrams for exact water connections .

The series is composed by MONO (one circuit) and DUAL (two circuits) units.

Содержание EWAH TZ D Series

Страница 1: ...3 Supersedes Telep t s haszn lati s karbantart si tmutat Air cooled chiller with inverter driven screw compressor EWAH TZ D EWAD TZ D EWAS TZ D EWFH TZ D EWFD TZ D EWFS TZ D Installation Operation and...

Страница 2: ...stem 33 Introduction and system description P ID 33 Coolant quality requirements 36 First operations at unit commissioning start 36 Free cooling purge valve related 37 Operations in case of failure 37...

Страница 3: ...ydronic Free cooling P ID 35 Fig 26 Description of labels applied on the electrical panel small 40 Fig 27 Description of labels applied on the electrical panel medium 41 Fig 28 Description of labels a...

Страница 4: ...D EIMAC01905 23_00EN 4 53 Fig 1 Refrigerant circuit diagram P ID MONO circuit units...

Страница 5: ...CTRONIC EXPANSION VALVE 12 ELECTRONIC EXPANSION VALVE 13 BPHE EVAPORATOR 14 PRESSURE RELIEF VALVE Pset 15 5 bar 15 ACCESS FITTING 16 PRESSURE GAUGE OPTIONAL 17 ANGLE VALVE 18 ANTIVIBRATION JOINT only...

Страница 6: ...D EIMAC01905 23_00EN 6 53 Fig 2 Refrigerant circuit diagram P ID DUAL circuit units...

Страница 7: ...IZER ELECTRONIC EXPANSION VALVE 12 ELECTRONIC EXPANSION VALVE 13 SHELL TUBES EVAPORATOR 14 PRESSURE RELIEF VALVE Pset 15 5 bar 15 ACCESS FITTING 16 PRESSURE GAUGE OPTIONAL 17 ANGLE VALVE 18 ANTIVIBRAT...

Страница 8: ...TWO WAY VALVE MOTORIZED u WATER FILTER v FREECOOLING COIL La WATER IN LINE Lh WATER IN MANIFOLD Lc WATER IN COIL Ld WATER OUT COIL FLEXIBLE Le WATR OUT MANIFOLD Lf FREECOOLING COIL BYPASS Lg EVAPORATO...

Страница 9: ...IQ 25 5 10 80 C LOW PRESSURE 15 5 20 80 C WATER CIRCUITS WATER IN OUT 10 15 55 C Fig 4 Description of the labels applied to the electrical panel Table 5 Label Identification 1 Manufacturer s logo 5 Ca...

Страница 10: ...install it outdoors if it is intended for use indoors 16 Do not use cables with inadequate sections nor extension cord connections even for very short periods or emergencies 17 For units with power co...

Страница 11: ...quid refrigerant evaporates to cool the water EWFD TZD EWFH TZD and EWFS TZD ranges are equipped with hydronic free cooling systems When free cooling mode is active below a specific OAT water glycol m...

Страница 12: ...le 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 provi...

Страница 13: ...0 C whichever is more critical shall be set to 25 of the LFL The detector shall continue to activate at higher concentrations Table 8 R1234ze E LFL value Refrigerant LFL Pre set alarm R1234ze E 0 303...

Страница 14: ...inspection by the transport company representative is carried out Immediately report the damage to the manufacturer representative a set of photographs is helpful in recognizing responsibility Unit r...

Страница 15: ...values represent a guideline please refer to the Chiller Selection Software CSS for real operating limits for the specific model For free cooling units the free cooling mode can be activated only whe...

Страница 16: ...D EIMAC01905 23_00EN 16 53 Fig 5 EWAH TZD Blue unit envelope Fig 6 EWAH TZD Silver unit envelope...

Страница 17: ...Option 187 high evaporator leaving water temperature Ref 3 Operation requires option 142 High ambient temperature kit Ref 4 Operation at outside ambient air temperature 5 C requires option 229 fan spe...

Страница 18: ...D EIMAC01905 23_00EN 18 53 Fig 9 EWAD TZD Silver unit envelope Fig 10 EWAD TZD Gold and Platinum unit envelope...

Страница 19: ...or leaving water temperature Ref 3 Operation requires option 142 High ambient temperature kit Ref 4 Operation at outside ambient air temperature 5 C requires option 229 fan speed modulation or option...

Страница 20: ...D EIMAC01905 23_00EN 20 53 Fig 12 EWAS TZD Silver unit envelope Fig 13 EWAS TZD Gold and Platinum unit envelope...

Страница 21: ...uires Option 187 high evaporator leaving water temperature Ref 3 Operation requires option 142 High ambient temperature kit The charts shown in these pages constitute a guideline on operating limits i...

Страница 22: ...High ambient temperature kit The charts shown in these pages constitute a guideline on operating limits in the range Refer to the CSS selection software for the actual operating limits in the working...

Страница 23: ...ove sea level Contact the factory if the unit is to be installed at altitudes 1000 m above sea level Table 11 Minimum percentage of glycol in case of low ambient temperature AAT 2 3 8 15 20 A 1 10 20...

Страница 24: ...iller DAE units can be installed without charge restrictions into machinery rooms or in open air location class III According to EN 378 1 a mechanical vent on the secondary circuit s has to be install...

Страница 25: ...e unit Lifting ropes chains must have a minimum lenght as it is specified in the drawing The installer has the responsibility for proper sizing of rigging equipment and its proper use It is recommende...

Страница 26: ...D EIMAC01905 23_00EN 26 53 Unit with 6 lifting points The drawing shows only the 10 fans version The lifting mode is the same regardless of the number of fans...

Страница 27: ...awing shows only the 16 fans version The lifting mode is the same regardless of the number of fans Unit with 12 lifting points The drawing shows only the 24 fans version The lifting mode is the same r...

Страница 28: ...unit is installed in places that are easily accessible to people and animals protection grids for the unit shall be installed To ensure the best performance on the installation site the following pre...

Страница 29: ...ng conditions and deliver the maximum available capacity under any given circumstances even if the lateral distance is lower than recommended unless the operating conditions should affect personnel sa...

Страница 30: ...normally In order to avoid the hot air recirculation due to dominant winds the installation where all chillers are aligned to the dominant wind is preferred see figure below Multiple chiller installed...

Страница 31: ...owest number of elbows and the lowest number of vertical changes of direction In this way installation costs are reduced and system performance is improved Water system must have Anti vibration mounti...

Страница 32: ...f case of unit replacement the entire water system must be emptied and cleaned before the new unit is installed Regular tests and proper chemical treatment of water are recommended before starting up...

Страница 33: ...ed to allow flushing of the piping system The bypass can be used during maintenance to isolate the heat exchanger without disrupting flow to other units Any damage due to the presence of foreign bodie...

Страница 34: ...e free cooling effect System changeover is controlled by embedded unit controller depending on operating conditions and unit setpoint Between mechanical and freecooling operation the water side pressu...

Страница 35: ...d VALVE f SAFETY VALVE 10 BAR 1 2 MF h AIR VENT 3 8 NPT TBC i DRAIN 1 4 NPT r WATER FILTER t TWO WAY VALVE MOTORIZED u WATER FILTER v FREECOOLING COIL La WATER IN LINE Lh WATER IN MANIFOLD Lc WATER I...

Страница 36: ...osion inhibitor is necessary for ensured coil protection e g those based on monopropylene glycol or sodium molybdate Maximum opening for strainer mesh shall be 1mm The most appropriate water treatment...

Страница 37: ...coils with nitrogen at 1 2 barg 4 9 Evaporator and heat recovery exchangers anti freeze protection All evaporators are supplied with a thermostatically controlled anti freeze electrical resistance whi...

Страница 38: ...ution system Should this product need to be connected to a low voltage public distribution system specific additional measures will have to be taken to avoid interference with other sensitive equipmen...

Страница 39: ...the system is switched off and the main switch of the unit is open Failure to observe this rule could result in serious personal injury 5 4 Cable requirements The cables connected to the circuit brea...

Страница 40: ...logo 9 Copper conductors 2 Gas type 10 Closed valves warning 3 Hazardous Voltage warning 11 Warning label 4 Sticker high voltage flash 12 Electrical resistence warning 5 Non flammable gas sticker if p...

Страница 41: ...ixing 8 Unit nameplate data 4 Gas type 16 Flammable label acording to EN ISO 7010 W021 5 Non flammable gas sticker if present Fig 28 Description of labels applied on the electrical panel large LARGE E...

Страница 42: ...or unqualified personnel to access the unit it is forbidden to access the electrical components without having opened the unit main switch and switched off the power supply it is forbidden to access t...

Страница 43: ...e following procedure should be followed before working on the refrigerant circuit 1 Remove refrigerant specify the residual pressure 2 Purge circuit with inert gas e g nitrogen 3 evacuate to a pressu...

Страница 44: ...place if necessary X Verify that all electrical terminals are tight Tighten if necessary X Clean inside the electrical control board X Visual inspection of components for any signs of overheating X Ve...

Страница 45: ...etc X Refrigeration circuit Check for any refrigerant leakage X Verify refrigerant flow using the liquid sight glass Sight glass full X Verify filter dryer pressure drop X Verify oil filter pressure d...

Страница 46: ...sage until it comes out clean Microchannels fins are stronger than traditional tube fin coil fins but still need to be handled with care 8 It is possible to clean a coil with a high pressure washer ma...

Страница 47: ...atures down to 20 C However they should not be switched on at temperatures lower than 0 C unless the following procedure is executed Open the switchbox only trained technicians should perform this ope...

Страница 48: ...its operating limits or not performing proper maintenance according to this manual can void the warranty Observe the following points in particular in order to conform to warranty limits 1 The unit ca...

Страница 49: ...frigerated water Yes No N A Piping completion Install the water filter even when not supplied at the inlet of the exchangers Install a flow switch calibrate and test off on off switching according to...

Страница 50: ...D For chillers belonging to this category some local regulations require a periodic inspection by an authorized agency Please check with your local requirements After a period of 10 years the manufact...

Страница 51: ...rical panel 1 Fill in with indelible ink the refrigerant charge label supplied with the product as following instructions Any refrigerant charge for each circuit 1 2 3 added during commissioning the t...

Страница 52: ...aws implementing the Directive 2012 19 EU RAEE Lead batteries must be collected and sent to specific waste collection centers Avoid the escape of refrigerant gases into the environment by using suitab...

Страница 53: ...f its content and the products and services presented therein Specification are subject to change without prior notice Refer to the data communicated at the time of the order Daikin Applied Europe S p...

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