EWAD TZ B XS/XL/XR (GOLD series) – Available static pressure - double pump high lift
Technical data
EWAD TZ B PS/PL/PR (PLATINUM series) – Available static pressure
- double pump low lift
Technical data
NOTE:
The above curves refers to the available static pressure taking into account the pressure drops in the heat exchanger, units piping and filters. the pressure drop across the filter is considered only for single circuit units which are provided as standard with filter (the filter is shipped loose).
In case where the filter provided from factory is replaced with other type of filters the above curves are not applicable. For dual circuit units the curves are not considering the pressure drop for the filter (which is not provided by factory). The installation of the filter for single and dual circuit units is mandatory.
How to calculate the overall chiller water side pressure drops (pump by others)
In order to calculate the overall pressure drops introduced by the chiller in an installation the following points have to be considered:
Overall chiller pressure drops = evaporator [kPa] Filter pressure drop [kPa]
a) Select the chiller with CSS tool, you get easily the design water flow rate and the corresponding ‘evaporator pressure drops’ value (in CSS tool kPa figures are referred to evaporator only).
b) Refer to “Specification” chapter or unit dimensional drawing to check the water connection diameters (equal to filters size).
c) Considering the design flow rate and water filter size and piping diameter, from graph “Filter pressure drops" get the corresponding kPa value.
d) By adding the values at point “a” and “c”, ‘Overall chiller pressure drops’ figure is got.
In case where the filter provided from factory is replaced with other type of filters the above curves are not applicable.
The installation of the filter for single and dual circuit units is mandatory.
The pressure drop value showed in CSS (Chiller Selection Software) are referred to chiller’s evaporator only.
For EWAD~TZB factory provides the water filter as standard option only for single circuit unit.
The filters is shipped loose
Note: when using mixture of water and glycol please contact factory as above specification could change.
Hydraulic scheme
Single circuit unit without hydronic kit
Dual circuit unit without hydronic kit
Note: drain plug and threaded fitting are on the shell and tube exchanger
Single circuit unit with single pump low/high lift
*Flow switch available as option (opt. code 58) safety valve set at 10 bar
Dual circuit unit with single pump low/high lift
Single circuit unit with dual pump low/high lift
*Flow switch available as option (opt. code 58)
safety valve set at 10 bar
Dual circuit unit with dual pump low/high lift
Water piping
The water system must have:
1. Anti-vibration joint in order to reduce transmission of vibrations to the structures.
2. Isolating valves to isolate the unit from the water system during maintenance.
3. Flow switch.
4. Manual or automatic air venting device at the system’s highest point.; drain device at the system’s lowest point.
5. A suitable device that can maintain the water system under pressure (expansion tank, etc.).
6. Water temperature and pressure indicators to assist the operator during service and maintenance.
7. A filter or device that can remove particles from the fluid. The installation of the filter is mandatory. The use of a filter extends the life of the evaporator and pump and helps to keep the water system in a better
condition.
8. Precautions should be provided to protect the unit against freezing.
9. The heat recovery device must be emptied of water during the winter season, unless an ethylene glycol mixture in appropriate percentage is added to the water circuit.
10. If case of unit substitution, 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 after starting up the new unit.
11. In the event that glycol is added to the water system as anti-freeze protection, pay attention to the fact that suction pressure will be lower, the unit’s performance will be lower and water pressure drops will be greater. All unit-protection systems, such as anti-freeze, and low-pressure protection will need to be readjusted.
12. Before insulating water piping, check that there are no leaks.
LEGEND
1. COMPRESSOR 2. EVAPORATOR 3. CONDENSER COIL 4. ELECTRICAL PANEL 5. FAN
6. EVAPORATOR WATER INLET 7. EVAPORATOR WATER OUTLET
8. SLOT FOR POWER AND CONTROL PANEL CONNCTION note:
the above drwawings are not contractually binding. For the design of installation refer to the dedicated dimensional drawing available from the factory
on request. The data ara subject to change without notice.
809 386 2412 3337 2484 2258 6785 EWAD700TZ-SS B2
809 386 2412 2437 2484 2258 5885 EWAD660TZ-SS B2
809 386 2412 2437 2484 2258 5885 EWAD610TZ-SS B2
850 346 2450 2465 2484 2258 5885 EWAD570TZ-SS B2
850 346 2450 1573 2484 2258 4985 EWAD495TZ-SS B2
850 346 2450 673
2484 2258 4085 EWAD450TZ-SS B2
850 346 2450 673
2484 2258 4085 EWAD380TZ-SS B2
1440 750
568 241 2484 2258 4085 EWAD360TZ-SS B1
652 750 568 241 2484 2258 3185 EWAD300TZ-SS B1
783 750 568 241 2484 2258 3185 EWAD270TZ-SS B1
81 750 568 241 2484 2258 2286 EWAD240TZ-SS B1
210 750 568 241 2484 2258 2286 EWAD190TZ-SS B1
281 750 568 241 2484 2258 2286 EWAD160TZ-SS B1
G F E D C B MODEL A
LEGEND
1. COMPRESSOR 2. EVAPORATOR 3. CONDENSER COIL 4. ELECTRICAL PANEL 5. FAN
6. EVAPORATOR WATER INLET 7. EVAPORATOR WATER OUTLET
8. SLOT FOR POWER AND CONTROL PANEL CONNCTION note:
the above drwawings are not contractually binding. For the design of installation refer to the dedicated dimensional drawing available from the factory
on request. The data ara subject to change without notice.
809 386 2412 3337 2484 2258 6785 EWAD700TZ-SL B2
809 386 2412 2437 2484 2258 5885 EWAD660TZ-SL B2
809 386 2412 2437 2484 2258 5885 EWAD610TZ-SL B2
850 346 2450 2465 2484 2258 5885 EWAD570TZ-SL B2
850 346 2450 1573 2484 2258 4985 EWAD495TZ-SL B2
850 346 2450 673
2484 2258 4085 EWAD450TZ-SL B2
850 346 2450 673
2484 2258 4085 EWAD380TZ-SL B2
1440 750
568 241 2484 2258 4085 EWAD360TZ-SL B1
652 750 568 241 2484 2258 3185 EWAD300TZ-SL B1
783 750 568 241 2484 2258 3185 EWAD270TZ-SL B1
81 750 568 241 2484 2258 2286 EWAD240TZ-SL B1
210 750 568 241 2484 2258 2286 EWAD190TZ-SL B1
281 750 568 241 2484 2258 2286 EWAD160TZ-SL B1
G F E D C B MODEL A
LEGEND
1. COMPRESSOR 2. EVAPORATOR 3. CONDENSER COIL 4. ELECTRICAL PANEL 5. FAN
6. EVAPORATOR WATER INLET 7. EVAPORATOR WATER OUTLET
8. SLOT FOR POWER AND CONTROL PANEL CONNCTION note:
the above drwawings are not contractually binding. For the design of installation refer to the dedicated dimensional drawing available from the factory
on request. The data ara subject to change without notice.
809 386 2412 3337 2484 2258 6785 EWAD700TZ-SR B2
809 386 2412 2437 2484 2258 5885 EWAD660TZ-SR B2
809 386 2412 2437 2484 2258 5885 EWAD610TZ-SR B2
850 346 2450 2465 2484 2258 5885 EWAD570TZ-SR B2
850 346 2450 1573 2484 2258 4985 EWAD495TZ-SR B2
850 346 2450 673
2484 2258 4085 EWAD450TZ-SR B2
850 346 2450 673
2484 2258 4085 EWAD380TZ-SR B2
1440 750
568 241 2484 2258 4085 EWAD360TZ-SR B1
652 750 568 241 2484 2258 3185 EWAD300TZ-SR B1
783 750 568 241 2484 2258 3185 EWAD270TZ-SR B1
81 750 568 241 2484 2258 2286 EWAD240TZ-SR B1
210 750 568 241 2484 2258 2286 EWAD190TZ-SR B1
281 750 568 241 2484 2258 2286 EWAD160TZ-SR B1
G F E D C B MODEL A
LEGEND
1. COMPRESSOR 2. EVAPORATOR 3. CONDENSER COIL 4. ELECTRICAL PANEL 5. FAN
6. EVAPORATOR WATER INLET 7. EVAPORATOR WATER OUTLET
8. SLOT FOR POWER AND CONTROL PANEL CONNCTION note:
the above drwawings are not contractually binding. For the design of installation refer to the dedicated dimensional drawing available from the factory
on request. The data ara subject to change without notice.
809 386 2412 4237 2484 2258 7685 EWAD680TZ-XS B2
809 386 2412 4237 2484 2258 7685 EWAD660TZ-XS B2
809 386 2412 3337 2484 2258 6785 EWAD610TZ-XS B2
809 386 2412 2437 2484 2258 5885 EWAD570TZ-XS B2
809 386 2412 2437 2484 2258 5885 EWAD540TZ-XS B2
850 346 2450 2465 2484 2258 5885 EWAD450TZ-XS B2
850 346 2450 1573 2484 2258 4985 EWAD420TZ-XS B2
850 346 2450 1573 2484 2258 4985 EWAD360TZ-XS B2
1440 750
568 241 2484 2258 4085 EWAD320TZ-XS B1
1440 750
568 241 2484 2258 4085 EWAD290TZ-XS B1
563 750 568 241 2484 2258 3185 EWAD240TZ-XS B1
652 750 568 241 2484 2258 3185 EWAD220TZ-XS B1
783 750 568 241 2484 2258 3185 EWAD190TZ-XS B1
G F E D C B MODEL A
LEGEND
1. COMPRESSOR 2. EVAPORATOR 3. CONDENSER COIL 4. ELECTRICAL PANEL 5. FAN
6. EVAPORATOR WATER INLET 7. EVAPORATOR WATER OUTLET
8. SLOT FOR POWER AND CONTROL PANEL CONNCTION note:
the above drwawings are not contractually binding. For the design of installation refer to the dedicated dimensional drawing available from the factory
on request. The data ara subject to change without notice.
809 386 2412 4237 2484 2258 7685 EWAD680TZ-XL B2
809 386 2412 4237 2484 2258 7685 EWAD660TZ-XL B2
809 386 2412 3337 2484 2258 6785 EWAD610TZ-XL B2
809 386 2412 2437 2484 2258 5885 EWAD570TZ-XL B2
809 386 2412 2437 2484 2258 5885 EWAD540TZ-XL B2
850 346 2450 2465 2484 2258 5885 EWAD450TZ-XL B2
850 346 2450 1573 2484 2258 4985 EWAD420TZ-XL B2
850 346 2450 1573 2484 2258 4985 EWAD360TZ-XL B2
1440 750
568 241 2484 2258 4085 EWAD320TZ-XL B1
1440 750
568 241 2484 2258 4085 EWAD290TZ-XL B1
563 750 568 241 2484 2258 3185 EWAD240TZ-XL B1
652 750 568 241 2484 2258 3185 EWAD220TZ-XL B1
783 750 568 241 2484 2258 3185 EWAD190TZ-XL B1
G F E D C B MODEL A
LEGEND
1. COMPRESSOR 2. EVAPORATOR 3. CONDENSER COIL 4. ELECTRICAL PANEL 5. FAN
6. EVAPORATOR WATER INLET 7. EVAPORATOR WATER OUTLET
8. SLOT FOR POWER AND CONTROL PANEL CONNCTION note:
the above drwawings are not contractually binding. For the design of installation refer to the dedicated dimensional drawing available from the factory
on request. The data ara subject to change without notice.
809 386 2412 4237 2484 2258 7685 EWAD680TZ-XR B2
809 386 2412 4237 2484 2258 7685 EWAD660TZ-XR B2
809 386 2412 3337 2484 2258 6785 EWAD610TZ-XR B2
809 386 2412 2437 2484 2258 5885 EWAD570TZ-XR B2
809 386 2412 2437 2484 2258 5885 EWAD540TZ-XR B2
850 346 2450 2465 2484 2258 5885 EWAD450TZ-XR B2
850 346 2450 1573 2484 2258 4985 EWAD420TZ-XR B2
850 346 2450 1573 2484 2258 4985 EWAD360TZ-XR B2
1440 750
568 241 2484 2258 4085 EWAD320TZ-XR B1
1440 750
568 241 2484 2258 4085 EWAD290TZ-XR B1
563 750 568 241 2484 2258 3185 EWAD240TZ-XR B1
652 750 568 241 2484 2258 3185 EWAD220TZ-XR B1
783 750 568 241 2484 2258 3185 EWAD190TZ-XR B1
G F E D C B MODEL A
LEGEND
1. COMPRESSOR 2. EVAPORATOR 3. CONDENSER COIL 4. ELECTRICAL PANEL 5. FAN
6. EVAPORATOR WATER INLET 7. EVAPORATOR WATER OUTLET
8. SLOT FOR POWER AND CONTROL PANEL CONNCTION note:
the above drwawings are not contractually binding. For the design of installation refer to the dedicated dimensional drawing available from the factory
on request. The data ara subject to change without notice.
809 386 2412 4237 2484 2258 7685 EWAD495TZ-PS B2
809 386 2412 3337 2484 2258 6785 EWAD420TZ-PS B2
809 386 2412 2437 2484 2258 5885 EWAD350TZ-PS B2
2340 750
568 241 2484 2258 4985 EWAD300TZ-PS B1
1440 750
568 241 2484 2258 4085 EWAD290TZ-PS B1
1440 750
568 241 2484 2258 4085 EWAD240TZ-PS B1
1440 750
568 241 2484 2258 4085 EWAD220TZ-PS B1
1440 750
568 241 2484 2258 4085 EWAD190TZ-PS B1
G F E D C B MODEL A
LEGEND
1. COMPRESSOR 2. EVAPORATOR 3. CONDENSER COIL 4. ELECTRICAL PANEL 5. FAN
6. EVAPORATOR WATER INLET 7. EVAPORATOR WATER OUTLET
8. SLOT FOR POWER AND CONTROL PANEL CONNCTION note:
the above drwawings are not contractually binding. For the design of installation refer to the dedicated dimensional drawing available from the factory
on request. The data ara subject to change without notice.
809 386 2412 4237 2484 2258 7685 EWAD495TZ-PL B2
809 386 2412 3337 2484 2258 6785 EWAD420TZ-PL B2
809 386 2412 2437 2484 2258 5885 EWAD350TZ-PL B2
2340 750
568 241 2484 2258 4985 EWAD300TZ-PL B1
1440 750
568 241 2484 2258 4085 EWAD290TZ-PL B1
1440 750
568 241 2484 2258 4085 EWAD240TZ-PL B1
1440 750
568 241 2484 2258 4085 EWAD220TZ-PL B1
1440 750
568 241 2484 2258 4085 EWAD190TZ-PL B1
G F E D C B MODEL A
LEGEND
1. COMPRESSOR 2. EVAPORATOR 3. CONDENSER COIL 4. ELECTRICAL PANEL 5. FAN
6. EVAPORATOR WATER INLET 7. EVAPORATOR WATER OUTLET
8. SLOT FOR POWER AND CONTROL PANEL CONNCTION note:
the above drwawings are not contractually binding. For the design of installation refer to the dedicated dimensional drawing available from the factory
on request. The data ara subject to change without notice.
809 386 2412 4237 2484 2258 7685 EWAD495TZ-PR B2
809 386 2412 3337 2484 2258 6785 EWAD420TZ-PR B2
809 386 2412 2437 2484 2258 5885 EWAD350TZ-PR B2
2340 750
568 241 2484 2258 4985 EWAD300TZ-PR B1
1440 750
568 241 2484 2258 4085 EWAD290TZ-PR B1
1440 750
568 241 2484 2258 4085 EWAD240TZ-PR B1
1440 750
568 241 2484 2258 4085 EWAD220TZ-PR B1
1440 750
568 241 2484 2258 4085 EWAD190TZ-PR B1
G F E D C B MODEL A
Warning Installation and maintenance of the unit must be performed only by qualified personnel who have knowledge with local codes and regulations, and experience with this type of equipment. Must be avoided the unit installation in places that could be considered dangerous for all the maintenance operations.
Handling Care should be taken to avoid rough handling or shock due to dropping the unit. Do not push or pull the unit from anything other than the base frame. Never allow the unit to fall during unloading or moving as this may result in serious damage. To lift the unit, rings are provided in the base frame of the unit. Spreader bar and cables should be arranged to prevent damage to cabinet.
Location The units are produced for outdoor installation on roofs, floors or below ground level on condition that the area is free from obstacles for the passage of the condenser air. The unit should be positioned on solid foundations and perfectly leveled; in the case of installation on roofs or floors, it may be advisable to arrange the use of suitable weight distribution beams. When the units are installed on the ground, a concrete base at least 250 mm wider and longer than the unit’s footprint should be laid. Furthermore, this base should withstand the unit weight mentioned in the technical data table.
Space requirements The units are air-cooled, then it is important to respect the minimum distances which guarantee the best ventilation of the condenser coils. Limitations of space reducing the air flow could cause significant reductions in cooling capacity and an increase in electricity consumption.
To determinate unit placement, careful consideration must be given to assure a sufficient air flow across the condenser heat transfer surface. Two conditions must be avoided to achieve the best performance: warm air recirculation and coil starvation. Both these conditions cause an increase of condensing pressures that results in reductions in unit efficiency and capacity. Moreover the unique microprocessor has the ability to calculate the operating environment of the air cooled chiller and the capacity to optimize its performance staying on-line during abnormal conditions.
Each side of the unit must be accessible after installation for periodic service. The following pictures shows you minimum recommended clearance requirements.
For single chiller installation in proximity of a wall the following indications are recommended:
- if h < Hc → L must at least 3 m
- if h ≥ Hc or L < 3 m contact local Daikin representative to evaluate possible arrangements
In case of two chillers installed side by side in free filed, the minimum distance recommended between the chillers is indicated in the below picture
In case of two chillers installed in a compound contact local Daikin representative to evaluate possible arrangements.
For mutliple chiller installation it is recommended to install the chillers is a single row as hown in the below picture
General The chiller will be designed and manufactured in accordance with the following European directives:
• Construction of pressure vessel 2014/68/EU
• Machinery Directive 2006/42/EC
• Low Voltage 2014/35/EU
• Electromagnetic Compatibility 2014/30/EU
• Electrical & Safety codes EN 60204–1 / EN 60335-2-40
• Manufacturing Quality Standards UNI – UNI EN ISO 1400
To avoid any losses, the unit will be tested at full load in the factory (at the nominal working conditions and water temperatures). The chiller will be delivered to the job site completely assembled and charged with refrigerant and oil.
The installation of the chiller must comply with the manufacturer’s instructions for rigging and handling equipment.
The unit will be able to start up and operate (as standard) at full load with:
- outside air temperature from ... °C to ... °C
- evaporator leaving fluid temperature between ... °C and ... °C
Refrigerant HFC 134a
Performance Chiller shall supply the following performances:
• Number of chiller(s) : ... unit(s)
• Cooling capacity for single chiller : ... kW
• Power input for single chiller in cooling mode : ... kW
• Heat exchanger entering water temperature in cooling mode : ... °C
• Heat exchanger leaving water temperature in cooling mode : ... °C
• Heat exchanger water flow : ... l/s
• Nominal outside working ambient temperature in cooling mode : ... °C
• Minimum full load efficiency (EER): ……….. (kW/kW)
• Minimum part load efficiency (ESEER): ……….. (kW/kW)
Operating voltage range should be 400V ±10%, 3ph, 50Hz (or 380V ±10%, 3ph, 60Hz) , voltage unbalance maximum 3%, without neutral conductor and shall only have one power connection point.
Unit description Chiller shall include one or two independent refrigerant circuits, semi-hermetic type rotary single screw compressors, refrigerant cooled inverter drive for each compressor, electronic expansion device (EEXV), direct expansion ‘shell & tube’ or PHE evaporator, air-cooled condenser section made with aluminum Microchannel technology, R-134a refrigerant, lubrication system, motor starting components, discharge line shut-off valve, suction line shut-off valve, control system and all components necessary for a safe and stable unit operation.
The chiller will be factory assembled on a robust base frame made of galvanized steel, protected by an epoxy paint.
Sound level and vibrations Sound power level shall not exceed ………dB(A). The sound power levels must be rated in accordance to ISO 9614 (other types of rating cannot be used). Vibration on the base frame should not exceed 2 mm/s.
Dimensions Unit dimensions shall not exceed following indications:
- Unit length ... mm - Unit width ... mm - Unit height ... mm Compressors
• Semi-hermetic, single-screw type with one main helical rotor meshing with the gaterotor. The gaterotor will be constructed of a carbon impregnated engineered composite material. The gaterotor supports will be
constructed of cast iron.
• Each compressor shall be fitted with inverter drive for variable capacity control. Inverter shall be integrated within the compressor casing and it shall be cooled by liquid refrigerant.
dedicated heat exchanger and additional piping to carry the oil from the compressor to heat exchanger and viceversa will be not accepted.
• The compressor shall be provided with an integrated, high efficiency, cyclonic type oil separator and with built-in oil filter, cartridge type.
• The compressor shall be direct electrical driven, without gear transmission between the screw and the electrical motor.
• The compressor casing shall be provided with ports to realize economized refrigerant cycles.
• The economizer cycle shall be provided with electronic expansion valve
• The unit shell be provided with two thermal protection realized by a thermistor for high temperature protection: one temperature sensor to protect electrical motor and another sensor to protect unit and lubricating oil from high discharge gas temperature.
• The compressor shall be equipped with an electric oil-crankcase heater.
• Compressor shall be fully field serviceable. Compressor that must be removed and returned to the factory for service shall be unacceptable. Cooling capacity control system The chiller will have a microprocessor for the control of the compressor capacity through inverter in order to continuously modulate the compressor’s
rotational speed.
• The unit capacity control shall be infinitely modulating between 100% and the minimum.
The chiller shall be capable of stable operation to minimum capacity without hot gas bypass.
• The system shall control the unit based on the leaving evaporator water temperature that shall be controlled by PID (Proportional Integral Derivative) logic.
• Unit control logic shall to manage frequency level of the compressor electric motor to exactly match plant load request in order to keep constant the set point for delivered chilled or hot water temperature.
• The microprocessor unit control shall detect conditions that approach protective limits and take self
corrective action prior to an alarm occurring. The system shall automatically reduce the chiller capacity when any of the following parameters are outside their normal operating range:
- High condenser pressure
- Low evaporating refrigerant temperature Unit-mounted Compressor’s Inverter and Electrical Requirement Customer electrical connection for compressor motor power shall be limited to the main power lead to the
single point power connection located into electrical panel.
• The Inverter shall be refrigerant cooled. Water cooled or air cooled inverter cooling are not acceptable.
• Base motor frequency shall permit motor to be utilized at nameplate voltage. Adjustable frequency range, monitored by unit’s microprocessor control, shall permit a stable unit capacity control down to minimum capacity without hot-gas bypass.
• Unit displacement power factor shall be not less than 0.95 on entire unit capacity range, from 100% down to minimum capacity.
Evaporator (Single circuit unit)
The units shall be equipped with a direct expansion plate to plate type evaporator.
• The evaporator will be made of stainless steel brazed plates and shall be linked with an electrical heater to prevent freezing down to -28°C ambient temperature, controlled by a thermostat and shall be insulated with flexible, closed cell polyurethane insulation material (20-mm thick).
• The evaporator will have 1 refrigerant circuit for each compressor.
• The water connections shall be VICTAULIC type connections as standard to ensure quick mechanical disconnection between the unit and the hydronic network.
• The evaporator will be manufactured in accordance to PED approval.
• Flow switch on evaporator available as option (shipped loose).
• Water filter will be standard.
(Dual Circuit units)
The units shall be equipped with a direct expansion shell & tube evaporator with copper tubes rolled into steel tube sheets. The evaporator shall be single-pass on both the refrigerant and water sides for pure counter-flow heat exchange and low refrigerant pressure drops.
• The external shell shall be linked with an electrical heater to prevent freezing down to -28°C ambient
temperature, controlled by a thermostat and shall be insulated with flexible, closed cell polyurethane insulation material (20-mm thick).
• The evaporator will have 2 circuits, one for each compressor and shall be single refrigerant pass.